Pioneer PDP-4280XA/XD, PDP-428XD Schematic

PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan

PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.
PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936

PIONEER CORPORATION 2007

PDP-4280XA

For details, refer to "Important Check Points for good servicing".

PLASMA TELEVISION

PDP-4280XA

PDP-4280XD
PDP-428XD

THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).

Model Type Power Requirement Remarks

PDP-4280XA WYV5 AC 220 V to 240 V

WYVIXK5 AC 220 V to 240 V

PDP-4280XD WYV5 AC 220 V to 240 V

WYVIXK5 AC 220 V to 240 V

PDP-428XD WYV5 AC 220 V to 240 V

WYVIXK5 AC 220 V to 240 V

ORDER NO.

ARP3441

T-IZS-002 JUNE 2007 Printed in Japan

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SAFETY INFORMATION

A

This service manual is intended for qualified service technicians ; it is not meant for the casual
do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been
trained to properly and safely repair complex products such as those covered by this manual.
Improperly performed repairs can adversely affect the safety and reliability of the product and may
void the warranty. If you are not qualified to perform the repair of this product properly and safely,
you should not risk trying to do so and refer the repair to a qualified service technician.

WARNING
This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of California to

B

cause cancer, birth defects or other reproductive harm.
Health & Safety Code Section 25249.6 - Proposition 65

NOTICE
(FOR CANADIAN MODEL ONLY)
Fuse symbols (fast operating fuse) and/or (slow operating fuse) on PCB indicate that replacement parts must
be of identical designation.

REMARQUE
(POUR MODÈLE CANADIEN SEULEMENT)
Les symboles de fusible (fusible de type rapide) et/ou (fusible de type lent) sur CCI indiquent que les pièces

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de remplacement doivent avoir la même désignation.

SAFETY PRECAUTIONS

NOTICE : Comply with all cautions and safety related notes
located on or inside the cabinet and on the chassis.
The following precautions should be observed :

1. When service is required, even though the PDP UNIT an

D

isolation transformer should be inserted between the power line
and the set in safety before any service is performed.

2. When replacing a chassis in the set, all the protective devices
must be put back in place, such as barriers, nonmetallic knobs,
adjustment and compartment covershields, isolation resistor­ capacitor, etc.

3. When service is required, observe the original lead dress. Extra
precaution should be taken to assure correct lead dress in the
high voltage circuitry area.

4. Always use the manufacture's replacement components.
Especially critical components as indicated on the circuit
diagram should not be replaced by other manufacture's.

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Furthermore where a short circuit has occurred, replace those
components that indicate evidence of overheating.

5. Before returning a serviced set to the customer, the service
technician must thoroughly test the unit to be certain that it is
completely safe to operate without danger of electrical shock,
and be sure that no protective device built into the set by the
manufacture has become defective, or inadvertently defeated
during servicing. Therefore, the following checks should be
performed for the continued protection of the customer and
servicetechnician.

6. Perform the following precautions against unwanted radiation
and rise in internal temperature.

• Always return the internal wiring to the original styling.

• Attach parts (Gascket, Ferrite Core, Ground, Rear Cover,
Shield Case etc.) surely after disassembly.

7. Perform the following precautions for the PDP panel.

• When the front case is removed, make sure nothing hits the
panel face, panel corner, and panel edge (so that the glass does
not break).

• Make sure that the panel vent does not break. (Check that the
cover is attached.)

• Handle the FPC connected to the panel carefully.
Twisting or pulling the FPC when connecting it to the
connector will cause it to peel off from the panel.

8. Pay attention to the following.

• Pay extreme caution when the front case and rear panel are
removed because this may cause a high risk of disturbance to
TVs and radios in the surrounding.

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Leakage Current Cold Check

With the AC plug removed from an AC power source, place a
jumper across the two plug prongs. Turn the AC power switch on.
Using an insulation tester (DC 500V), connect one lead to the
jumpered AC plug and touch the other lead to each exposed metal
part (input/output terminals, screwheads, metal overlays, control
shafts, etc.), particularly any exposed metal part having a return
path to the chassis. Exposed metal parts having a return path to
the chassis should have a minimum resistor reading of 4 MΩ.
The below 4 MΩ resistor value indicate an abnormality which
require corrective action. Exposed metal parts not having a return
path to the chassis will indicate an open circuit.

Leakage Current Hot Check

Plug the AC line cord directly into an AC power source (do not
use an isolation transformer for this check).
Turn the AC power switch on.
Using a "Leakage Current Tester (Simpson Model 229
equivalent)", measure for current from all exposed metal parts of
the cabinet (input/output terminals, screwheads, metal overlays,
control shaft, etc.), particularly any exposed metal part having a
return path to the chassis, to a known earth ground (water pipe,
conduit, etc.). Any current measured must not exceed 1 mA.

PRODUCT SAFETY NOTICE

Many electrical and mechanical parts in PIONEER set have
special safety related characteristics. These are often not evident
from visual inspection nor the protection afforded by them
necessarily can be obtained by using replacement components
rated for higher voltage, wattage, etc. Replacement parts which
have these special safety characteristics are identified in this
Service Manual.
Electrical components having such features are identified by
marking with a > on the schematics and on the parts list in this
Service Manual.
The use of a substitute replacement component which dose not
have the same safety characteristics as the PIONEER
recommended replacement one, shown in the parts list in this
Service Manual, may create shock, fire or other hazards.
Product Safety is continuously under review and new instructions
are issued from time to time. For the latest information, always
consult the current PIONEER Service Manual. A subscription to,
or additional copies of, PIONEER Service Manual may be
obtained at a nominal charge from PIONEER.

A

B

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Reading should

Device
under
test

Test all
exposed metal
surfaces

Also test with
plug reversed
(Using AC adapter
plug as required)

Leakage
current
tester

not be above
1 mA

Earth
ground

AC Leakage Test

ANY MEASUREMENTS NOT WITHIN THE LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL
SHOCK HAZARD AND MUST BE CORRECTED BEFORE
RETURNING THE SET TO THE CUSTOMER.

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[Important Check Points for Good Servicing]

In this manual, procedures that must be performed during repairs are marked with the below symbol.
Please be sure to confirm and follow these procedures.

1. Product safety

Please conform to product regulations (such as safety and radiation regulations), and maintain a safe servicing environment by
following the safety instructions described in this manual.

1 Use specified parts for repair.

Use genuine parts. Be sure to use important parts for safety.

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C

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2 Do not perform modifications without proper instructions.

Please follow the specified safety methods when modification(addition/change of parts) is required due to interferences such as
radio/TV interference and foreign noise.

3 Make sure the soldering of repaired locations is properly performed.

When you solder while repairing, please be sure that there are no cold solder and other debris.
Soldering should be finished with the proper quantity. (Refer to the example)

4 Make sure the screws are tightly fastened.

Please be sure that all screws are fastened, and that there are no loose screws.

5 Make sure each connectors are correctly inserted.

Please be sure that all connectors are inserted, and that there are no imperfect insertion.

6 Make sure the wiring cables are set to their original state.

Please replace the wiring and cables to the original state after repairs.
In addition, be sure that there are no pinched wires, etc.

7 Make sure screws and soldering scraps do not remain inside the product.

Please check that neither solder debris nor screws remain inside the product.

8 There should be no semi-broken wires, scratches, melting, etc. on the coating of the power cord.

Damaged power cords may lead to fire accidents, so please be sure that there are no damages.
If you find a damaged power cord, please exchange it with a suitable one.

9 There should be no spark traces or similar marks on the power plug.

When spark traces or similar marks are found on the power supply plug, please check the connection and advise on secure
connections and suitable usage. Please exchange the power cord if necessary.

a Safe environment should be secured during servicing.

When you perform repairs, please pay attention to static electricity, furniture, household articles, etc. in order to prevent injuries.
Please pay attention to your surroundings and repair safely.

2. Adjustments

To keep the original performance of the products, optimum adjustments and confirmation of characteristics within specification.
Adjustments should be performed in accordance with the procedures/instructions described in this manual.

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3. Lubricants, Glues, and Replacement parts

Use grease and adhesives that are equal to the specified substance.
Make sure the proper amount is applied.

4. Cleaning

For parts that require cleaning, such as optical pickups, tape deck heads, lenses and mirrors used in projection monitors, proper
cleaning should be performed to restore their performances.

5. Shipping mode and Shipping screws

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To protect products from damages or failures during transit, the shipping mode should be set or the shipping screws should be
installed before shipment. Please be sure to follow this method especially if it is specified in this manual.

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CONTENTS

SAFETY INFORMATION ......................................................................................................................................................... 2

1. SERVICE PRECAUTIONS....................................................................................................................................................7

1.1 NOTES ON SOLDERING............................................................................................................................................... 7

1.2 CHARGED SECTION AND HIGH VOLTAGE GENERATING POINT ............................................................................ 8

2. SPECIFICATIONS.................................................................................................................................................................9

2.1 ACCESSORIES.............................................................................................................................................................. 9

2.2 SPECIFICATIONS ........................................................................................................................................................ 10

2.3 PANEL FACILITIES ...................................................................................................................................................... 13

3. BASIC ITEMS FOR SERVICE............................................................................................................................................ 22

3.1 CHECK POINTS AFTER SERVICING......................................................................................................................... 22

3.2 QUICK REFERENCE ................................................................................................................................................... 23

3.3 PCB LOCATION ........................................................................................................................................................... 25

3.4 CLEANING ................................................................................................................................................................... 26

4. BLOCK DIAGRAM .............................................................................................................................................................. 28

4.1 OVERALL WIRING DIAGRAM (1/2)............................................................................................................................. 28

4.2 OVERALL WIRING DIAGRAM (2/2)............................................................................................................................. 30

4.3 OVERALL BLOCK DIAGRAM (1/2).............................................................................................................................. 32

4.4 OVERALL BLOCK DIAGRAM (2/2).............................................................................................................................. 34

4.5 POWER SUPPLY UNIT ................................................................................................................................................ 36

4.6 42 X DRIVE ASSY........................................................................................................................................................ 37

4.7 42 Y DRIVE, 42 SCAN A and B ASSYS....................................................................................................................... 38

4.8 POWER SUPPLY BLOCK of 42 X, Y DRIVE and 42 SCAN A, B ASSYS ................................................................... 39

4.9 42 ADDRESS ASSY..................................................................................................................................................... 40

4.10 42 DIGITAL and SENSOR ASSYS............................................................................................................................. 41

4.11 POWER SUPPLY BLOCK of MULTI BASE SECTION ............................................................................................... 42

4.12 TANSHI ASSY ............................................................................................................................................................ 44

4.13 42/60LED and 42IR (42RLS&IR) ASSYS................................................................................................................... 45

4.14 POWER SUPPLY BLOCK of 42IR (42RLS&IR) and SIDE KEY ASSYS ...................................................................46

5. DIAGNOSIS ........................................................................................................................................................................ 47

5.1 POWER SUPPLY OPERATION ................................................................................................................................... 47

5.1.1 LED DISPLAY INFORMATION .............................................................................................................................. 47

5.1.2 POWER ON SEQUENCE...................................................................................................................................... 48

5.1.3 DETAILS OF POWER ON SEQUENCE ................................................................................................................ 49

5.2 DIAGNOSIS FLOWCHART OF FAILURE ANALYSIS.................................................................................................. 53

5.2.1 WHOLE UNIT......................................................................................................................................................... 53

5.2.2 POWER SUPPLY UNIT ......................................................................................................................................... 55

5.2.3 DRIVE ASSY.......................................................................................................................................................... 56

5.2.4 DIGITAL ASSY ....................................................................................................................................................... 60

5.2.5 MAIN ASSY............................................................................................................................................................ 61

5.2.6 VIDEO SYSTEM .................................................................................................................................................... 62

5.2.7 AUDIO SYSTEM .................................................................................................................................................... 69

5.3 DIAGNOSIS OF PD (POWER-DOWN) ........................................................................................................................ 72

5.3.1 BLOCK DIAGRAM OF THE POWER-DOWN SIGNAL.......................................................................................... 72

5.3.2 PD (POWER-DOWN) DIAGNOSIS OF FAILURE ANALYSIS ............................................................................... 73

5.4 DIAGNOSIS OF SD (SHUTDOWN) .............................................................................................................................76

5.4.1 BLOCK DIAGRAM OF THE SHUTDOWN SIGNAL............................................................................................... 76

5.4.2 SD (SHUTDOWN) DIAGNOSIS............................................................................................................................. 77

5.5 NON-FAILURE INFORMATION.................................................................................................................................... 78

5.5.1 INFORMATION ON SYMPTOMS THAT DO NOT CONSTITUTE FAILURE ......................................................... 78

5.5.2 FUNCTION OF DECREASING THE BRIGHTNESS LEVEL................................................................................. 82

5.6 OUTLINE OF THE OPERATION................................................................................................................................ 83

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5.6.1 PANEL DRIVE-POWER ON/OFF FUNCTION

5.6.2 SPECIFICATION OF THE FAN CONTROL ........................................................................................................... 84

5.6.3 PROCESSING IN ABNORMALITY........................................................................................................................ 85

...................................................................................................... 83

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6. SERVICE FACTORY MODE ...............................................................................................................................................88

6.1 OUTLINE OF THE SERVICE FACTORY MODE ..........................................................................................................88

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6.1.1 SERVICE FACTORY MODE TRANSITION CHART ..............................................................................................88

6.1.2 HOW TO ENTER/EXIT SERVICE FACTORY MODE ............................................................................................88

6.1.3 FUNCTIONS WHEN ENTERING THE SERVICE FACTORY MODE.....................................................................89

6.1.4 REMOTE CONTROL CODE IN SERVICE FACTORY MODE ...............................................................................90

6.1.5 PDP SERVICE REMOTE CONTROL.....................................................................................................................91

6.1.6 FACTORY HIERARCHICAL TABLE .......................................................................................................................92

6.1.7 INDICATIONS IN SERVICE FACTORY MODE......................................................................................................94

6.2 DETAILS OF FACTORY MENU....................................................................................................................................96

6.2.1 INFORMATION .......................................................................................................................................................96

6.2.2 PANEL FACTORY (+)...........................................................................................................................................104

6.2.3 OPTION................................................................................................................................................................ 114

6.2.4 INITIALIZE............................................................................................................................................................ 115

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7. DISASSEMBLY .................................................................................................................................................................116

7.1 CHART OF REMOVAL ORDER FOR THE MAIN PARTS AND BOARDS ................................................................. 116

7.2 DISASSEMBLY ...........................................................................................................................................................117

8. EACH SETTING AND ADJUSTMENT ..............................................................................................................................123

8.1 ADJUSTMENT REQUIRED WHEN THE UNIT IS REPAIRED OR REPLACED ........................................................123

8.2 BACKUP OF THE EEPROM (DIGITAL ASSY)...........................................................................................................125

8.3 HOW TO CLEAR HISTORY DATA .............................................................................................................................128

8.4 ADJUSTMENT WHEN THE SERVICE PANEL ASSY IS REPLACED .......................................................................129

8.5 ADJUSTMENT WHEN THE DRIVE ASSYS ARE REPLACED..................................................................................138

9. RS-232C............................................................................................................................................................................141

9.1 OUTLINE OF RS-232C COMMAND...........................................................................................................................141

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9.1.1 PREPARED TOOLS.............................................................................................................................................141

9.1.2 USING RS-232C COMMANDS............................................................................................................................141

9.2 LIST OF RS-232C COMMANDS ................................................................................................................................142

9.3 DETAILS OF EACH COMMANDS..............................................................................................................................149

9.3.1 QS1 (PANEL STATUS).........................................................................................................................................149

9.3.2 QS2 (PANEL OPERATION DATA)........................................................................................................................150

9.3.3 QS3 (OTHER DATA ON THE PANEL) .................................................................................................................151

9.3.4 QAJ (PANEL ADJUSTMENT DATA).....................................................................................................................152

9.3.5 QPW (VIDEO ADJUSTMENT DATA OF THE PANEL).........................................................................................153

9.3.6 QPM (PULSE METER VALUE) ............................................................................................................................153

9.3.7 QPD (PD LOGS) ..................................................................................................................................................154

9.3.8 QSD (SD LOGS) ..................................................................................................................................................155

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9.3.9 QSE (DESTINATION PECULIAR INFORMATION)..............................................................................................156

9.3.10 QMT (TEMPERATURE / FAN ROTATION / ROOM LIGHT SENSOR) ..............................................................156

9.3.11 QNG (SHUTDOWN INFORMATION OF MTB)...................................................................................................157

9.3.12 QSI (INPUT SIGNAL DATA)...............................................................................................................................159

9.3.13 DRV (PANEL DRIVE-POWER ON / OFF)..........................................................................................................159

9.3.14 FAY / FAN (ADJ. COMMANDS PERMISSION / PROHIBITION)........................................................................160

9.3.15 FAJ / UAJ / CBU / BCP (BACKUP FUNCTION FOR ADJUSTMENT VALUE)...................................................160

10. EXPLODED VIEWS AND PARTS LIST...........................................................................................................................162

10.1 PACKING SECTION .................................................................................................................................................162

10.2 REAR SECTION .......................................................................................................................................................164

10.3 FRONT SECTION.....................................................................................................................................................166

10.4 CHASSIS SECTION (1/2).........................................................................................................................................168

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10.5 CHASSIS SECTION (2/2).........................................................................................................................................170

10.6 PANEL CHASSIS SECTION.....................................................................................................

.7 MULTI BASE SECTION............................................................................................................................................172

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................................172

10.8 PDP SERVICE ASSY 428 ........................................................................................................................................176

10.9 TABLE TOP STAND (PDP-4280XA and PDP-4280XD ONLY).................................................................................178

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1. SERVICE PRECAUTIONS

1.1 NOTES ON SOLDERING

• For environmental protection, lead-free solder is used on the printed circuit boards mounted in this unit.
Be sure to use lead-free solder and a soldering iron that can meet specifications for use with lead-free solders for repairs
accompanied by reworking of soldering.

• Compared with conventional eutectic solders, lead-free solders have higher melting points, by approximately 40 °C.
Therefore, for lead-free soldering, the tip temperature of a soldering iron must be set to around 373 °C in general, although
the temperature depends on the heat capacity of the PC board on which reworking is required and the weight of the tip of
the soldering iron.

Compared with eutectic solders, lead-free solders have higher bond strengths but slower wetting times and higher melting
temperatures (hard to melt/easy to harden).

The following lead-free solders are available as service parts:

• Parts numbers of lead-free solder:
GYP1006 1.0 in dia.
GYP1007 0.6 in dia.
GYP1008 0.3 in dia.

A

B

C

D

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1.2 CHARGED SECTION AND HIGH VOLTAGE GENERATING POINT

A

Charged Section

High Voltage Generating Point

The places where the commercial AC power is used without
passing through the power supply transformer.
If the places are touched, there is a risk of electric shock. In
addition, the measuring equipment can be damaged if it is
connected to the GND of the charged section and the GND of the
non-charged section while connecting the set directly to the
commercial AC power supply. Therefore, be sure to connect the
set via an insulated transformer and supply the current.

1. Power cord

B

2. AC inlet

3. Power switch

4. Fuse (In the POWER SUPPLY Unit)

5. STB transformer and Converter transformer
(In the POWER SUPPLY Unit)

6. Other primary side of the POWER SUPPLY Unit

C

: Part is Charged Section.
: Part is the High Voltage Generating Points

other than the Charged Section.

42 SCAN B Assy Conductive plate X42 Y DRIVE Assy 42 X DRIVE AssyPOWER SUPPLY Unit

The places where voltage is 100 V or more except for the charged
places described above. If the places are touched, there is a risk of
electric shock.
The VSUS voltage remains for several minutes after the power to
the unit is turned off. These places must not be touched until
about 10 minutes after the power is turned off, or it is confirmed
with a tester that there is no residual VSUS voltage.

If the procedures described in “5.6.1 PANEL DRIVE-POWER
ON/OFF FUNCTION ” are performed before the power is turned
off, the voltage will be discharged in about 30 seconds.

POWER SUPPLY Unit........................................................(200 V)

42 X DRIVE Assy................................................................(200 V)

42 Y DRIVE Assy................................................(-230 V to 500 V)

42 SCAN A Assy.................................................(-230 V to 500 V)

42 SCAN B Assy.................................................(-230 V to 500 V)

D

E

42 SCAN A Assy

F

AC inlet

Power switch

Fig. High Voltage Generating Point (Rear view)

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2. SPECIFICATIONS

2.1 ACCESSORIES

A

Remote control unit (PDP-4280XA)
(AXD1553)

Dry cell battery (R06, AA)

Binder Assy
(AEC1908)

Speed clamp: ×3 Bead band: ×3

Ferrite core (L5321)
(ATX1039)

Remote control unit (PDP-4280XD)
(AXD1552)

Band assy
(AXY1192)

Screw: ×2 Plastic band: ×2

PDP-4280XA, XD only

Remote control unit (PDP-428XD)
(AXD1551)

B

C

Ferrite core Cable tie

(for ferrite core)

Cleaning cloth (AED1285)

Warranty card

Operating instructions (PDP-4280XA)
(ARE1478: WYV5)
(ARE1477: WYVIXK5)

Power cord
(ADG1214)

Power cord
(ADG1223)

WYVIXK5 type only

Operating instructions (PDP-4280XD)
(ARE1485: WYV5)
(ARC1602: WYV5)
(ARE1476: WYVIXK5)
(ARC1587: WYVIXK5)

D

E

Operating instructions (PDP-428XD)
(ARE1484: WYV5)
(ARC1601: WYV5)
(ARE1475: WYVIXK5)
(ARC1586: WYVIXK5)

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2.2 SPECIFICATIONS

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PDP-4280XA

B

C

D

" Dimensions

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1040

115

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550

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719

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Unit: mm

PDP-4280XA

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PDP-4280XD

220 V to 240 V AC, 50 Hz/60 Hz, 299 W (0.4 W
Standby)

Main unit: 29.6 kg (65.3 lbs.)
Stand: 1.7 kg (3.8 lbs.) (including bolts)
Total: 31.3 kg (69.0 lbs.)

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" Dimensions

679

1040

550

115

719

237

Unit: mm

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PDP-428XD

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220 V to 240 V AC, 50 Hz/60 Hz, 299 W (0.4 W
Standby)

29.6 kg (65.3 lbs.)

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D

E

" Dimensions

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511 0401

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Unit: mm

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2.3 PANEL FACILITIES

PDP-4280XA

Front Section

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B

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D

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PDP-4280XA

Rear Section

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PDP-4280XA

Remote Control Unit

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B

C

D

E

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PDP-4280XD

Front Section

B

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TIMER indicator

• The TIMER indicator lights up when one or more DTV

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programmes are preset for watching or recording.

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PDP-4280XD

Rear Section

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B

C

D

E

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PDP-4280XD

Remote Control Unit

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PDP-428XD

Front Section

A

B

C

• The TIMER indicator lights up when one or more DTV
programmes are preset for watching or recording.

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E

F

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PDP-428XD

Rear Section

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PDP-428XD

Remote Control Unit

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3. BASIC ITEMS FOR SERVICE

3.1 CHECK POINTS AFTER SERVICING

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Items to be checked after repair (PDP)

To ensure the quality of the product after repair, check the recommended items shown below:

No. Procedures Item to be checked

Check if all the symptoms pointed out by the customer have been

1

addressed.

2 Connect the peripheral equipment.

3 Check the video and audio.

B

4 Check the buttons and controls.

5 Check the cabinet.

See the table below for the items to be checked regarding video and audio:

Item to be checked regarding video Item to be checked regarding audio

Block noise Distortion
Horizontal noise Noise

C

Dot noise Volume too low
Disturbed image (video jumpiness) Volume too high
Too dark Volume fluctuating
Too bright Sound interrupted
Mottled color

The symptoms in question must not be reproduced.

Connect all external peripheral equipment as originally connected
and check if the connections are correct.

Tune in to the stations that the customer would normally receive
and check if video and audio are normal.

Use the buttons and controls on the remote control unit and main
unit and check if they operate properly.

Check for any scratches or dirt that have been made or attached
on the cabinet after receiving the product for repair.

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3.2 QUICK REFERENCE

Quick Reference upon Service Visit 1

Notes, PD/SD diagnosis, and methods for various settings

Notes when visiting for service

1. Notes when disassembling/reassembling

1 Rear case

When reassembling the rear case, the screws must be tightened in a
specific order. Be careful not to tighten them in the wrong order forcibly.
For details, see "Rear Case" in "7. DISASSEMBLY".

2 Attaching screws for the HDMI connector

When attaching the HDMI connector after replacing the Main Assy,
secure the HDMI connector manually with a screwdriver, but not
with an electric screwdriver. If you tighten the screws too tightly
with an electric screwdriver, the screw heads may be damaged, in
which case the screws cannot be untightened/tightened any more.

2. On parts replacement

1 How to discharge before replacing the Assys

A charge of significant voltage remains in the Plasma Panel even
after the power is turned off. Safely discharge the panel before
replacement of parts, in either manner indicated below:

Let the panel sit at least for 3 minutes after the power is turned off.

A:
B: Turn the Large Signal System off before the power is turned off
then, after 1 minute, turn the power off.
For details, see "5.6.1 PANEL DRIVE-POWER ON/OFF
FUNCTION".

2 On the settings after replacement of the Assys

Some boards need settings made after replacement of the Assys.
For details, see "8. EACH SETTING AND ADJUSTMENT".

3. On various settings

1 Setting in Factory mode

After a Mask indication into the panel is performed, be sure to
set the Mask setting to "OFF" then exit Factory mode.

PD/SD

Item

SQ_LSI

Communication with the module IIC

DIGITAL-RST2

Panel high temperature

Panel section

Audio/

Short-circuit SP terminal

Communication with the Module UCOM

Main 3-wire serial communication

Main IIC communication

Communication with the Main UCOM

FAN

MTB section

Unit high temperature

Digital Tuner communication

MTB-RST2/RST4

Main EEPROM

POWER
SCAN
SCN-5V
Y-DRIVE
Y-DCDC
Y- S U S
ADRS
X-DRIVE
X-DCDC
X-SUS
DIG-DCDC
UNKNOWN

No. of LEDs
flashing

Red Blue

Blue 1

Blue 2

Blue 3

Blue 4

Blue 5

Blue 6

Blue 7

Blue 8

Blue 9

Blue 10

Blue 11

Blue 12

Blue 13

Blue 15

Red 2

Red 3

Red 4

Red 5

Red 6

Red 7

Red 8

Red 9

Red 10

Red 11

Red 12

Red 15

A

LED Display Information

 Rewriting software

 PD (2-15)

 SD (1-15)

 No backup

B

This indication does not display all
LED patterns.
For details, please refer to 5.1.1 LED
DISPLAY INFORMATION.

C

How to locate several items on the Factory menu

{ } : Item on the Factory menu
[ ] : Key on the remote control unit
" " : Screen indication

1. Confirmation of accumulated power-on time and power-on
count

Select {INFORMATION} then {HOUR METER}.
(After entering Factory mode, press

2. Confirmation of the Power-down and Shutdown histories

1 Panel system

PD: Select {PANEL FACTORY} then {POWER DOWN}.
(After entering Factory mode, press [MUTING] once, press
[ENTER/SET], then press
SD: Select {PANEL FACTORY} then {SHUT DOWN}.
(After entering Factory mode, press [MUTING] once, press
[ENTER/SET], then press

2 MTB section

Select {INFORMATION} then {MAIN NG}.
(After entering Factory mode, press

3. How to display the Mask indication

1 Mask indication in the panel side

1. Select {PANEL FACTORY} then {RASTER MASK SETUP}.
(After entering Factory mode, press [MUTING] once, press
[ENTER/SET], then press

2. Press [ENTER/SET], then select a Mask indication, using

[] five times.)

[] three times.)

[] four times.)

[] three times.)

[] 8 times.)

[] or [].

Adjustments and Settings after replacement of the
Assys (Procedures in Factory mode)

1. Digital Video Assy: Transfer of backup data

 Select {PANEL FACTORY}, {ETC}, then {BACKUP DATA}. (After entering Factory
mode, press [MUTING] once, press [ENTER/SET], press [] seven times, then

press [ENTER/SET].)
 Select {TRANSFER}, using [], then hold [ENTER/SET] pressed for at least 5

seconds.
 After transfer of backup data is completed, {ETC} is automatically selected, and the
LED on the front panel returns to normal lighting.

2. MAIN Assy: Execution of FINAL SETUP.

 Select {INITIALIZE} then {FINAL SETUP}, then press [ENTER/SET]. (After entering
Factory mode, press [MUTING] three times, then press [] four times.)
 Select "YES", using []. Then hold [ENTER/SET] pressed for at least 5 seconds.
 After "FINAL SETUP IS COMPLETE" is displayed on the screen, turn the POWER
switch of the main unit off.

3. POWER SUPPLY Unit: Clearance of the accumulated power-on count
and maximum temperature value

 Select {PANEL FACTORY}, {ETC}, then {P COUNT INFO}. (After entering Factory
mode, press [MUTING] once, press [ENTER/SET], press [] seven times, press
[ENTER/SET], then press [] six times.)
 Press [] to select "CLEAR". Hold [ENTER/SET] pressed for at least 5 seconds.

After clearance is completed, "ETC" is automatically selected. Clear the maximum
temperature value (MAX TEMP) in the same manner.

4. Other Assys: Clearance of the maximum temperature value

 Select {PANEL FACTORY}, {ETC}, then {MAX TEMP}. (After entering Factory mode,
press [MUTING] once, press [ENTER/SET], press [] seven times, press
[ENTER/SET], then press [] seven times.)
 Press [] to select "CLEAR". Hold [ENTER/SET] pressed for at least 5 seconds.

After clearance is completed, "ETC" is automatically selected.

D

E

PDP-4280XA

56

F

23

7

8

1234

A

Quick Reference upon Service Visit 2

Mode transition and structure of layers in Service Factory mode

Mode transition in Service Factory mode

B

C

INFORMATION mode

1. VERSION (1)

2. VERSION (2)

3. MAIN NG

4. TEMPERATURE

5. HOUR METER

6. HDMI SIGNAL INFO1

7. HDMI SIGNAL INFO2

8. VDEC SIGNAL INFO1

9. VDEC SIGNAL INFO2

PANEL FACTORY mode

1. PANEL INFORMATION

2. PANEL WORKS

3. POWER DOWN

4. SHUT DOWN

5. PANEL-1 ADJ

6. PANEL-2 ADJ

7. PANEL FUNCTION

8. ETC.

9. RASTER MASK SETUP

10. PATTEN MASK SETUP

11. COMBI MASK SETUP

Up

Down

• To shift to another mode, press [MUTING].

• To shift to another item in a specific mode,
press [i] or [j].

• To shift to the next nested layer below for an
item with a "(+)" indication, press [ENTER/SET].
To return to the next nested layer above,
also press [ENTER/SET].

INITIALIZE mode

1. SIDE MASK LEVEL

2. FINAL SETUP

3. Wide XGA AUTO

OPTION mode

1. EDID WRITE MODE

2. CH PRESET

3. SYNC DET

Structure of Layers in Service Factory Mode

INFORMATION mode

1. VERSION (1) The software versions for each microcomputer

2. VERSION (2) The Flash memory versions for each device

3. MAIN NG The shutdown message ID/event times
(Going Clear mode by [ENTER/SET] key)
3-1. CLEAR

4. TEMPERATURE The temperature/FAN rotating status/Room light sensor

5. HOUR METER The HOUR METER/P-COUNT information

6. HDMI SIGNAL INFO 1 The information of HDMI information files

7. HDMI SIGNAL INFO 2 The information of HDMI information files

8. VDEC SIGNAL INFO 1 The signal information of VDEC

9. VDEC SIGNAL INFO 2 The signal information of VDEC

PANEL FACTORY mode Refer to [PANEL FACTORY MODE]

OPTION mode

1. EDID WRITE MODE For factory use

2. CH PRESET For production line use

3. SYNC DET For technical analysis

INITIALIZE mode

1. SIDE MASK LEVEL For factory use
1-1. SIDE MASK LEVEL

2. FINAL SETUP Set to Factory default settings (it should perform after
2-1. DATA RESET replacing a MAIN Assy)

3. Wide XGA AUTO For technical analysis

Select Yes by [l] key, l pressing and hold [ENTER/SET] key

Structure of Layers in Panel Factory Mode 1

1. PANEL INFORMATION Version indication of the panel

2. PANEL WORKS Indications of the accumulated power-on time, pulse-meter

D

count, and power-on count of the panel

3. POWER DOWN Indication of the Power-down history

4. SHUT DOWN Indication of the Shutdown history

5. PANEL-1 ADJ (+)

1. VOL SUS

2. VOL OFFSET

• • • • •

8. VOL YNOFS4

9. RESET1ST_KSB

10. RESET2ND_KSB

• • • • •

23. YSTL_FMR_HZ

24. SUS FREQ

E

6. PANEL-2 ADJ (+)

1. R-HIGH

2. G-HIGH
3 .B-HIGH Parameters for the WB adjustment of the panel, which are

4. R-LOW required during adjustment after panel replacement

5. G-LOW

6. B-LOW

7. ABL Setting of the power consumption. A setting table is
available for each vertical signal.

To "Structure of Layers in Panel Factory Mode 2"

F

Settings required after replacement of the panel

Modification not required because these items
are basically for factory presetting

For AM noise prevention (Depending on the mode,
brightness of the screen changes.)
For confirmation of the result of the setting change,
the unit must be turned off then back on again.

Structure of Layers in Panel Factory Mode 2

7. PANEL FUNCTION (+)

1. R-LEVEL

2. G-LEVEL

3. B-LEVEL

4. ADDRESS L1 Items for use by engineers

5. ADDRESS L2

• • • • •

11. ADDRESS U4

12. STK MODE

8. ETC (+)

1. BACKUP DATA For transferring backup data (after replacement of
the DIGITAL Assy)

2. DIGITAL EEPROM To clear data of the digital video

3. PD INFO.

4. SD INFO. For clearance of data for the corresponding items.

5. HR-MTR INFO. The clearing method is the same: Select "CLEAR",

6. PM/B1-B5 using [l], then hold [ENTER/SET] pressed for at

7. P COUNT INFO. least 5 seconds. After clearance is completed, {ETC}

8. MAX TEMP. is automatically selected.

9. RASTER MASK SETUP (+)

1. MASK OFF

2. RST MASK 01 For use while Raster Mask (full mask) is displayed.

• • • • • Use [i] or [j] to select the type of mask.

26. RST MASK 25

10. PATTEN MASK SETUP (+)

1. MASK OFF

2. PTN MASK 01 For use while Pattern Mask is displayed. Use [i] or

• • • • • [j] to select the type of mask.

50. PTN MASK 49

11. COMBI MASK SETUP (+)

1. MASK OFF

2. CMB MASK 01 For use while Combination Mask is displayed.

• • • • • Use [i] or [j] to select the type of mask.

18. CMB MASK 17

24

PDP-4280XA

1 234

5678

3.3 PCB LOCATION

This photo. is PDP-4280XD model.

A

SENSOR Assy 42 DIGITAL Assy

POWER SUPPLY

Unit

42 SCAN B Assy42 SCAN A Assy SIDE KEY Assy

42 Y DRIVE Assy 42 X DRIVE Assy

MAIN Assy

42 ADDRESS
Assy

TANSHI Assy 232C Assy

42IR (42RLS&IR) Assy

Front view

42 ADDRESS
Assy

Rear view

42 ADDRESS
Assy

42 ADDRESS
Assy

Note:
The wiring shown in the photo is different from the actual wiring, because the product in the photo is a
prototype. Upon servicing, be sure to restore the original wiring of the unit after repair work.

B

SIDE IO AssyXGA POWER SW

C

Assy

D

42/60LED Assy

Front view

Mark No. Description Part No.

LIST OF ASSEMBLIES

NSP 42 ADDRESS ASSY AWV2451
NSP 42 SCAN A ASSY AWW1266
IC2801 - IC2806 SN755875PZT-P
NSP 42 SCAN B ASSY AWW1267
IC2901 - IC2906 SN755875PZT-P

42 X DRIVE ASSY AWV2452
42 Y DRIVE ASSY AWW1262
XGA POWER SW ASSY AWW1261

42 DIGITAL ASSY AWW1271
SENSOR ASSY AWW1272

> MAIN ASSY (PDP-4280XA) AWV2463
> MAIN ASSY (PDP-4280XD) AWV2462
> MAIN ASSY (PDP-428XD) AWV2461

56

Mark No. Description Part No.

TANSHI ASSY (PDP-4280XA) AWW1251
TANSHI ASSY (PDP-4280XD) AWW1249
TANSHI ASSY (PDP-428XD) AWW1247
SIDE IO ASSY AWW1253
232C ASSY AWW1254

42/60LED ASSY AWW1276
42IR ASSY (PDP-4280XA, XD) AWW1282
42RLS&IR ASSY (PDP-428XD) AWW1277
SIDE KEY ASSY AWW1286

> POWER SUPPLY UNIT AXY1157

PDP SERVICE ASSY 428 AWU1276

PDP-4280XA

7

E

F

25

8

1234

3.4 CLEANING

A

Name Part No. Remarks

Cleaning liquid GEM1004
Cleaning paper GED-008

B

Used to fan cleaning.
Refer to “10.4 CHASSIS SECTION (1/2)”.

C

D

E

F

26

1 234

PDP-4280XA

5678

A

B

C

D

E

PDP-4280XA

56

F

27

7

8

1234

4. BLOCK DIAGRAM

4.1 OVERALL WIRING DIAGRAM (1/2)

A

B

C

D

E

F

28

1 234

PDP-4280XA

5678

A

When ordering service parts, be sure to refer to "EXPLODED
VIEWS and PARTS LIST" or "PCB PARTS LIST".
The mark found on some component parts indicates the
importance of the safety factor of the part. Therefore, when
replacing, be sure to use parts of identical designation.

B

C

D

E

PDP-4280XA

56

F

29

7

8

1234

4.2 OVERALL WIRING DIAGRAM (2/2)

A

B

C

D

E

F

30

1 234

PDP-4280XA

5678

A

B

C

D

E

PDP-4280XA

56

F

31

7

8

1234

C

C

C

C

C

C

C

C

C

C

C

C

I
C

3
1
5
1

M
O
D
U
L
E
U
C
O
M

M
3
0
6
2
0
F
C
S
G
P

4.3 OVERALL BLOCK DIAGRAM (1/2)

A

42 SCAN B ASSY
(HIGH SIDE)

IC5V

VH

SSccaannIIC

IC2901

VH

SSccaannIIC

IC2902

VH IC5V

SSccaannIIC

IC2903

VH IC5V

SSccaannIIC

IC2904

B

VH

SSccaannIIC

IC2905

VH IC5V

SSccaannIIC

IC2906

VH IC5V

SSccaannIIC

IC2801

VH

SSccaannIIC

IC2802

C

VH IC5V

SSccaannIIC

IC2803

VH IC5V

SSccaannIIC

IC2804

VH

SSccaannIIC

IC2805

VH IC5V

SSccaannIIC

IC2806

42 SCAN A ASSY
(LOW SIDE)

D

Scan Signal

PSUS

IC5V

SB1

IC5V

Scan Signal

PSUS

IC5V

IC5V

SA1

: Wire harness
: FFC

42 Y DRIVE ASSY

VH

IC5V

+16.5V

Y 2

RST-D

BLOCK

VF_P

VYPRST

PREST
BLOCK

PSUS

VF_S

VF_S

L-MSK

H-MSK

VF_U +16.5V

PSUS

RESONANCE
BLOCK

VKOFS3

VKOFS1

+16.5

KNOFS1
KNOFS3
BLOCK

Y 3

VH

IC5V

Photo Coupler

BLOCK

Y 5

+5V

+6.5V

+16.5V

VSUS

VSUS

SUS

BLOCK

MSK-S

Gate Signal

SUSOUT

VSUS

SUS

BLOCK

PreDrive

VSUS

+16.5V

VSUS

SUS

IC5V

BLOCK

Scan Signal

+16.5V

DC/DC
CONV.

+16.5

+16.5

SUS

VSNOFS

VKNOFS2

VF_S VF_U

15V

VF_S

KNOFS4
SOFT-G

BLOCK

VSNOFS

SNOFS

KNOFS2

BLOCK

VYPRST

MAIN

DC/DC

CONV.

VKNOFS3

REGULATOR

VKNOFS4

VKNOFS2

VF_S

Drive Signal

Drive Signal

Drive Signal

VKNOFS1

VKNOFS4

+16.5V

IC5V/VF

DC/DC
CONV.

Y 4

VH

IC5V VF_P

VADR

+5V

LOGIC
BLOCK

Y 1

42 DIGITAL ASSY

VADR+5V

Y 7

VADR+5V

Y 6

D24

TE1

SENSOR
ASSY

D21

V+3VEEP V+3VEEP

V+3VEEP V+3VEEP AC_DET V SUS_ADJ

SENSOR

IC3651

TEMP1

ESDA

_

ESCL

_

EEPROM

(Backup)

IC3652

PS_PD DRF _B

M_SW_DET EXT_PD

PD_TRG_B DRF_SW

V+3VACTV

OR

V+12V

V+12V V+8V

V+12V

BA80BC0WFP

DD-C ONV

BD9302FP

8VRE G

IC3602

IC3601

V+3V_D V+1V _D

V+3VEEP V+3VACTV V+3VACTV

BR24L04FJ

EEPROM

IC3156

PULL UP

V+3V_D RST

PST3628U

RESET IC

IC3302

RST2 V+3VACTV V+3VEEP

PST3628U

RESET IC

IC3305

FLASHWRITECONCT

CN3152

BUSY
RXD1
TXD1
CLK1

S

CNVS

D22

V+3VACTV

AND

_

RST MD

RST2
AC_DE
M_SW_DET

_

PS PD

_

PD

TRG

EEPRST

EEP RST

PULL UP

MODEL PSW2

MODE XDRV_PD XDRV PD

TEMP1

E_SDA

E_SCL

M

M

O

3

D

0

U

I

6

C

2

L

3

0

E

1

F

5

U

C

1

C

S

O

G

M

P

PD_MUTE _B

DRF_B

RELAY

AND

XSUS _PD XSUS PD

YDRV_ PD XKNOFS2 _ADJ

XDD_PD XDD PD

V+3VACTV SUS_MUTE

V+3VACTV

V+3VACTV

PD_MUTE

OR

INV

XKOFS1 _ADJ

RST_SQ

VD SCAN PD

WE_SQ YDRV PD

INP_MUTE PSW2

TXD MD

RXD MD SCN5V_PD

REQ MD SCAN_PD

MSEL YSUS_ PD

YDD_PD

PSIZE

SQ_NON YSUS PD

ADRS_PD SUS _MUTE

INV

VKNOFS1 _2_ADJ

VKNOFS3 _ADJ

VKNOFS4 _ADJ

VOFS _ADJ

VYPRST_ADJ

SCN5V PD

YDD PD

D19

D20

E

V+8V

BLOCK

RESONANC E

VDDLS3

CN1501

CLKN/P
CN/P DN/P
AN/P BN/P

VADR3

AD1

Receiver

LVDS

IC1501

42 ADDRESS
ASSY

BLOCK

RESONA NCE

VADR4

VDDLS4 VADR1VADR2

F

IC1554

DRIVER IC

IC1553

DRIVER IC

32

V+3V

RESONA NCE

BLOCK

DRIVER IC

IC1552

CN1502

AD2

VADR

V+5V

CLK / LE / HBLK / LBLK

BLOCK

RESONA NCE

VADR1VADR2

VDDLS1VDDLS2

R/G/B

IC1551

DRIVER IC

PDP-4280XA

42 ADDRESS
ASSY

BLOCK

RESONA NCE

VADR4 VDDLS1VDDLS2

VDDLS4

IC1554

DRIVER IC

V+8V

BLOCK

RESONANC E

VDDLS3

DRIVER IC

CN1501

AD1

CLKN/P
CN/P DN/P
AN/P BN/P

Receiver

LVDS
IC1501

VADR3

IC1553

V+3V

RESONA NCE

BLOCK

IC1552

DRIVER IC

CN1502

AD2

VADR

V+5V

CLK / LE / HBLK / LBLK

R/G/B

BLOCK

RESONA NCE

IC1551

DRIVER IC

1 234

I

C
3
3
0
6

F

l

a
s
h
R
O
M

I

C
3
3
0
7

S
R
A
M

TANSHI

IO6

MAIN

M3

MAIN

M2

5678

POWER SUPPLY UNIT

P1

+16.5V
+6.5V

VSUS

P2

+16.5V

+6.5V

P7

VSUS_CONT

+6.5V
+12V
+16.5V

L371

STB5.1V
STB3.3V
+35V

STB5.1V
+12V
STB3.3V

+60V

+16.5V

VSUS_ADJ

+12V

DRF_SW_B
DRF_B
EXT_PD
PD_TRIG_B
AC_DET
M_SW_DET

PS_PD

Q373

Switching

Z152

US_SW

Z901

RELAY

+35V
+16.5V
+12V
+6.5V

for
Relay Drive

P10

P6

P5

P4

P8

+5.1V

P9

P12

T251

T281

T301

T121

RL102

PRIMARYSECONDARY

Switching

Q253

Q252

Switching

RC101

AC INLET

Z281

Switching

Q301

Switching

+390V

D123

PFC Q203

Q204

P11

XGA

Z121

Switching

D131

D121

F101

LIVE

P3

POWER SW

ASSY

SW2

A

B

MAIN

M1

TXD MD UARTRXD

RXD MD UARTTXD

REQ MD

MSEL V+3VACTV

RELAY2

V+3VACTV

TC7W126F

UARTSW

IC3159

V+3VACTV

AND

RST

V+3VACTV

V+3V_D XKNOFS2 _ADJ

FLASHWRITECONCT

D

CN3301

UARTRX

D

UARTTX
SDIJTAG
DBI
TMS
TCK
TDO

D23

TDI
TRST

RESETX

OFF DE

_T

DL FIN

_

_Q

FUT1 S
FUT2 S

_Q

REQ SQ

_

BUSY S

_Q

CE SQ

_

TXD SQ

_

RXD SQ

_

CLK SQ

_

STOP _SQ

SCL VKNOFS3 _ADJ

SDA VKNOFS4 _ADJ

V+3V_D

V+3V_D

M62339FP

M62334FP

IC3158

IC3157

DAC2

DAC1

VKNOFS1 _2_ADJ

VOFS_ADJ

VYPRST _ ADJ

XKOFS1_ADJ

VSUS_ADJ

V+3VACTV

SQ1_SD Gen.

CPU

LS2

ADR_PD_MSK

YDRV[0:23]

XDRV[0:7]

ADRS_PD

Gen.

INP_MUTE

SEQUENCE PROCESSOR.

PEG239A-K

IC3401

V+3VACTV

OR

ADDRESS

L4

D18

D11

V+3VACTV

RA-

RB+ RA[0:9] RA [0:9 ]

RB- GA[0:9] GA[0:9]

RC+ SYNC [0:3] SYNC [0:3]

RC-

RD+

RD-

RE+

RE-

RCLK+

RCLK-

RA+

R(

G(

B(

E

D
S

Y

H

S

VS

THEATER THEATER

AD3LVDS [0:9 ]

ADDRESS

L3

D17

V+3V_D V+3V_D V+1V_D

LVDSRECIEVER

BU8255KVT -K

IC3001

BA[0:9] BA [0:9] AD1LVDS [0:9]

V+3V_D V+3V_D V+3V_D

102.5MX_TAL

CLKD

X3302

CLKS

AD2LVDS [0:9 ]

AD0LVDS [0:9 ]

F
ll

a

I

C

s
h

3
3

R

0

O

6

M

I

S

C

R

3

A

3

M

0
7

V+8V

V+3V_D

ADDRESS

ADDRESS

L1

L2

D15

D16

42 X DRIVE ASSY

VADR

X 7

+6.5V

+16.5V

VSUS

X 1

V5+

+5V

LOGIC

BLOCK

VADR

REGULATOR

Drive Signal

Drive Signal

Drive Signal

X 3

X 2

+5V

+16.5V

SUS

PreDrive

VF

RESONANCE
BLOCK

OFFSET

Reg.

+16.5V

Gate Signal

+16.5V

VPOFS

VPOFS

VXKOFS1
VXKOFS2

15V
DC/DC
CONV.

+16.5 VSUS

XPRST

+16.5

SOFT-D

PSUS

OFFSET

BLOCK

+16.5

VF

VSUS

C

SUS

BLOCK

PSUS

VSUS

SUS

BLOCK

D

PSUS

VSUS

SUS

BLOCK

E

V+8V

BLOCK

RESONANC E

VDDLS3

DRIVER IC

CN1501

AD1

CLKN/P
CN/P DN/P
AN/P BN/P

Receiver

LVDS

IC1501

VADR3

IC1553

42 ADDRESS
ASSY

BLOCK

RESONANC E

VADR4

VDDLS4 VADR1VADR2

IC1554

DRIVER IC

V+3V

RESONANC E

BLOCK

DRIVER IC

IC1552

CN1502

AD2

VADR

V+5V

CLK / LE / HBLK / LBLK

VDDLS1VDDLS2

R/G/B

BLOCK

RESONA NCE

IC1551

DRIVER IC

VADR1VADR2

42 ADDRESS
ASSY

BLOCK

RESONANC E

VDDLS4

IC1554

DRIVER IC

PDP-4280XA

56

CN1501

AD1

CLKN/P
CN/P DN/P

V+8V

BLOCK

RESONANC E

VDDLS3

VADR4 VDDLS1VDDLS2

DRIVER IC

V+3V

AN/P BN/P

Receiver

LVDS

IC1501

VADR3

IC1553

7

BLOCK

RESONA NCE

IC1552

DRIVER IC

CN1502

AD2

VADR

V+5V

CLK / LE / HBLK / LBLK

RESONA NCE

R/G/B

BLOCK

IC1551

DRIVER IC

F

33

8

1234

4.4 OVERALL BLOCK DIAGRAM (2/2)

Analog Audio signal

A

Analog Video signal
Component signal
Digital Video signal

Digital Audio signal
Synchronized signal

Data signal
Control signal
RF signal

Analogue SIF

SCL_AV

SDA_AV

I2S/SPDIF

B

AUDIO_OUT_L/R

AIR_L/R

L/R IN

MON_OUT_L/R

L/R IN

JA9001

Audio Output

JA8901

Input1 SCART

JA8902

Input2 SCART

SCART_V

MUTE1

MUTE2

MON_OUT_V

LINK_IO

C

MON_OUT_L/R

L/R IN

JA8903

Input3 SCART

MUTE3

MON_OUT_V

JA6201
AKP1321
(PCMCIA)

CVBS

CVBS

Y/C

CVBS
Y/C

USB

U6001

AXF1179

(Tuner)

Analogue

VIDEO

IC4601

R2S11006FT

(AVSW)

COMMON I/F

CVBS

SCL_TU

SDA_TU

SCL_AV5
SDA_AV5

SCL_AV5
SDA_AV5

CVBS

IC6101

DRX3975D

(COFDM)

Q8405

SSM6N

17FU

SCL_AV

SDA_AV

IC6301

TC90173FG

(VBI)

Add0-3
Data0-7

TSSI[0:10]

IC6401

M65596FP

(USB)

Add1-6
Data0-15

LOGIC

(Common IF)

SCL_AV
SDA_AV

Add0-14
Data0-7

SCL_MB
SDA_MB

BR24F64F
(EEPROM)

ROM IF

IC8404

SIDE IO
ASSY

Y

CLP

Main

Sub

RGB

CLP

FB

RGB/YPbPr

IC4801

CM0048BF

(VDEC)

IC5001

AD9985KSTZ

(ADC)

IC9101

MSP5651M

(MSP)

D

E

L/R IN

HP_L/R OUT

L/R IN

PC_L/R IN

SW_L/R OUT

JA9351
JA9352

Input5

CN9353

Head Phone

JA9004

Audio Input for

Input2 Component

JA9003

Input2

Component

JA9002

Audio Input for PC

CN4701

PC Input

PDP-428XD
PDP-508XD ONLY

JA9001

SUB WOOFER

PDP-428XD/4280XD
PDP-508XD/5080XD

ONLY

JA9081

SPDIF

Y/C

CVBS

SOW_SW1/2/3

Input1_RGB

Input3_RGB

RAPID_SW1

RAPID_SW3

Input2_Y/Pb/Pr

PC_RGB

PC_H/V

IC4701

R2S11001FT

(RGBSW)

IC5201
SII9125CTU
(HDMI RX)

SCL_MB
SDA_MB

SCL_MB
SDA_MB

SCL_AV
SDA_AV

CLP

I2S

IC5101

CXB1442

(HDMI SW)

F

34

IC9201

TAS5122DCA

(D-AMP)

TANSHI ASSY

PDP-4280XA

INPUT1

HDMI

INPUT3

HDMI

INPUT4

HDMI

1 234

5678

IC8407

TC74HC4066

IC8602

XD,0XD:AGC1041

(S29GL064A90TFIR90-K)

0XA:AGC1040

(S29JL032H70TFI21-K)

64Mbit Flash

Add1-17
Data0-15

TSIN 0-7

I2S/SPDIF

I2C-1

I2C-0

IC8401

uPD61123F1

(EMMA II SV)

IC8601
K4H511638D
512Mbit DDR

UMI

Add0-12
Data0-15

OSD 8bit *4

656 8bit

42/60 LED
ASSY

IC8301

AGC1037

(M30620FCSGP-U5-K)

IF UCOM

SIDE KEY
ASSY

KEY_AD1
KEY_AD2

KEY

IR

REM

42/60 LED
ASSY

LED

A

232C ASSY

SR_OUT

RS232C

To
DIGITAL
ASSY

B

C

IC4101

BU8254KVT

(LVDS)

IC8201

EDD1232ABBH

128Mbit (DDR)

SR_OUT
TXD_SR
RXD_SR

232C_CH2
232C_CH3
232C_CH4
232C_CH8

IC4802

HY57V161610FTP

16Mbit(SDRAM)

656 10bit

656 8bit

8bit *3

12bit *3

IC8001

PD6568A

(ARIA)

IC8203

EDD1232ABBH

128Mbit (DDR)

IC8204

AGC1050

(S29GL016A90TFIR2-K)

16Mbit Flash

D

E

MAIN ASSY

PDP-4280XA

56

F

35

7

8

1234

4.5 POWER SUPPLY UNIT

A

POWER SUPPLY UNIT

B

RC101

Q204

PFC Q203

P11

D123

NEUTRAL

D131

P3

LIVE

F101

D121

+390V

C

Q253

Switching

Q252

Switching

Z281

Switching

Q301

Switching

Z121

Switching

PRIMARYSECONDARY

D

RL102

T121

T251

T281

E

T301

+35V

+16.5V

+12V

+6.5V

for

Relay Drive

P10

Z901

+6.5V

+16.5V

+6.5V

VSUS

F

P1

36

1 234

+16.5V

P2

VSUS_CONT

VADR

P7

P6

+16.5V

P5

+12V

DRF_SW_B

VSUS_ADJ

P4

PDP-4280XA

DRF_B

EXT_PD

PD_TRIG_B

PS_PD

AC_DET

M_SW_DET

RELAY

+6.5V

P8

+12V

Q373

L371

+16.5V

+5.1V

Z152

Switching

STB5.1V

STB3.3V

P9

+35V

US_SW

P12

STB3.3V

+12V

STB5.1V

5678

4.6 42 X DRIVE ASSY

42 X DRIVE ASSY

A

X 7

X 1

VADR

VSUS

+16.5V

+5V

+6.5V

REGULATOR

Drive Signal

X 2

+5V

+16.5V

SUS

PreDrive

VF

VPOFS

+16.5V

Gate Signal

+16.5V

VF

15V
DC/DC
CONV.

+16.5 VSUS

XPRST

+16.5

SOFT-D

VSUS

SUS

BLOCK

SUS

BLOCK

VSUS

B

PSUS

C

+5V

LOGIC

BLOCK

VADR

Drive Signal

Drive Signal

X 3

RESONANCE
BLOCK

VPOFS

OFFSET

Reg.

PSUS

VXKOFS1
VXKOFS2

+16.5

OFFSET

BLOCK

D

PSUS

VSUS

E

SUS

BLOCK

F

PDP-4280XA

56

37

7

8

1234

4.7 42 Y DRIVE, 42 SCAN A and B ASSYS

A

42 SCAN B ASSY
(HIGH SIDE)

IC5V

VH

Scan IC

IC2901

VH

IC5V

B

Scan IC

IC2902

VH IC5V

Scan IC

IC2903

VH IC5V

Scan IC

IC2904

VH

IC5V

C

Scan IC

IC2905

VH IC5V

Scan IC

IC2906

PSUS

Scan Signal

SB1

Y 2

PSUS

VH

IC5V

VF_S

BLOCK

VF_P

PREST

BLOCK

RST-D

+16.5V

VYPRST

VF_S

VSUS

SUS

BLOCK

MSK-S

VSUS

42 Y DRIVE ASSY

+6.5V

+16.5V

+16.5

KNOFS4
SOFT-G

+16.5

KNOFS2

BLOCK

SNOFS

BLOCK

VF_S

VSNOFS

REGULATOR

Y 4

VKNOFS4

VKNOFS2

VF_S

Drive Signal

+5V

Y 5

VADR

SUSOUT

VSUS

H-MSK

VH IC5V

D

Scan IC

IC2801

VH

Scan IC

IC2802

IC5V

Scan Signal

PSUS

PSUS

VF_U +16.5V

RESONANCE
BLOCK

L-MSK

SUS

BLOCK

Gate Signal

VSUS

+16.5V

SUS

PreDrive

VSNOFS

Drive Signal

Drive Signal

VYPRST

MAIN

DC/DC

CONV.

VKNOFS1

+5V

LOGIC

BLOCK

VH

Y 1

VH IC5V

VKNOFS2

VKOFS3

VKOFS1

VH

IC5V

+16.5

KNOFS1
KNOFS3

BLOCK

Photo Coupler

BLOCK

IC5V

VSUS

SUS

BLOCK

+16.5V

DC/DC
CONV.

Scan Signal

Scan IC

IC2803

E

VH IC5V

Scan IC

IC2804

VH

IC5V

Scan IC

IC2805

Y 3

SA1

VKNOFS3

VF_S VF_U

15V

VKNOFS4

+16.5V

IC5V/VF

DC/DC
CONV.

IC5V VF_P

VADR+5V

Y 7

VADR+5V

Y 6

VH IC5V

Scan IC

IC2806

F

42 SCAN A ASSY
(LOW SIDE)

38

PDP-4280XA

1 234

5678

4.8 POWER SUPPLY BLOCK of 42 X, Y DRIVE and 42 SCAN A, B ASSYS

A

to 42 ADDRESS ASSY

to 42 ADDRESS ASSY

42 Y DRIVE ASSY 42 X DRIVE ASSY

Logic

SUS-B

FET

SUS-G

FET

SUS-U

IGBT

SUS-D

IGBT

HMSK

FET

LMSK

FET

YPRST

FET

SNOFS

FET

YKOFS

1

FET

YKOFS

2

FET

YKOFS

3

FET

YKOFS

4

FET

RST-D

FET

Pre

drive

Pre

drive

Pre

drive

Pre

drive

Pre

drive

Pre

drive

Pre

drive

Pre

drive

Pre

drive

Pre

drive

Pre

drive

Pre

drive

Pre

drive

5.0V 5.0V

from
POWER SUPPLY

16.5V 16.5V

VSUS VSUS

VF1

VF2

VF3

IC5V

VH

5V

5.0V 6.5V 5.0V 6.5V
g

.IC

Re

15V

DC/DC Conv.

IC5V

DC/DC Conv.

DC/DC Conv.

VYPRST

Reg.

VSNOFS

Reg.

VYKOF

S12

Reg.

Note:

VYKOF

S3

Reg.

VYKOF

S4

Reg.

VYPRST, VSNOFS, VYKOFS12, VYKOFS3, VYKOFS4
and VXKOFS2 voltages are electrical volume controls.

Logic

SUS-B

FET

SUS-G

FET

SUS-U

IGBT

SUS-D

IGBT

XPRST

FET

XSOFT-D

FET

XKOFS1

FET

XKOFS2

FET

drive

drive

drive

drive

drive

drive

drive

drive

Pre

Pre

Pre

Pre

Pre

Pre

Pre

VXKOFS1

Pre

VXKOFS2

from

5V

g.IC

Re

VF

DC/DC

Conv.

POWER SUPPLY

B

VPOFS

C

VXKOFS1

Reg.

VXKOFS2

Reg.

D

SOFT-G

FET

Scan

Logic

Pre

drive

IC5V VH

Scan IC

42 SCAN A, B ASSYS

56

PDP-4280XA

E

F

39

7

8

1234

4.9 42 ADDRESS ASSY

A

42 ADDRESS ASSY

DRIVER IC

IC1551

B

CLK / LE / HBLK / LBLK
R/G/B

C

VADR1

VDDLS1 VDDLS2

RESONANCE

BLOCK

DRIVER IC

IC1552

VADR2

RESONANCE

BLOCK

DRIVER IC

IC1553

VADR3

RESONANCE

BLOCK

VDDLS3

DRIVER IC

IC1554

VADR4

RESONANCE

BLOCK

VDDLS4

IC1501

D

VADR

V+5V

LVDS

Receiver

V+3V

AD2

CN1502

E

F

40

1 234

PDP-4280XA

AN/ P BN/P
CN/P DN/ P
CLKN/ P

AD1

CN1501

V+8V

5678

EYS

S

D

Q

D

]

[

]RA[

]

[

]BA[

]

]

]

]

[

]

S

(

(

[

]

IC3151

MODU LE U CO M

M30620FC SGP

IC3305
RESET IC
PST3628U

CN3152

FLAS H WRITE C ONC T

IC3156

EEPRO M

BR24L04F J

IC3401

SEQ UENC E PR OCE SSOR.

PEG 239A- K

CN3301

FLAS H WRITE C ONC T

IC3159

UART SW

TC7W126F

IC3306

Flas h ROM

X3302

102.5MX _TAL

IC3602
DD - CO NV
BD9302FP

IC3601

8V REG

BA80B C0WFP

IC3001

LVD S REC IEVER

BU8255K VT- K

IC3158
DAC2

M62339FP

IC3157
DAC1

M62334FP

IC3302

RESET IC

PST3628U

IC3307
SRAM

CP U

4.10 42 DIGITAL and SENSOR ASSYS

42 DIGITAL ASSY

V+3V_D V+3V_D V+3V_D

V+3VACTV

V+3V_D V+3V_D V+1V_D

0:9

0:9

SYNC[0:3

V+3V_D XKNOFS2 _ADJ

UARTRX

UARTTX

SDIJTAG

DBI

TMS

TCK

TDO

TDI

TRST

RA+
RA-

RB+ RA
RB- GA[0:9] GA[0:9]

RC+ SYNC[0:3
RC-

D11

RD+
RD-

MAIN ASSY

RE+
RE-

B

R(G
RCLK+
RCLK-

0:9

BA

0:9

THEATER THEATER

DSH

V

INP_ MUTE

V+3VACTV

TXD MD UARTRXD
RXD MD UARTTXD
REQ MD

MSEL V+3VACTV

RELAY2

D23

RST

PULL UP

V+3VACTV

PULL UP

AND

V+3VACTV PSIZE

RST _SQ

VD SCAN PD

WE_SQ YDRV PD
INP_ MUTE PSW2

TXD MD
RXD MD SCN5V _PD
REQ MD SCAN _PD

MSEL YSUS _ PD

MODE XDRV _PD XDRV PD
MODEL PSW2

TEMP1

E_SDA
E_SCL

_T

RESETX

OFF DE

CLKD

CLKS

_

_Q

_Q

_

_

_

_

_

_
DL FIN

FUT1 S

FUT2 S

STOP _SQ

REQ SQ

BUSY S

CE SQ

TXD SQ

RXD SQ

CLK SQ

V+3V_D

V+8V

AD0LVDS[0:9

AD1LVDS[0:9

AD2LVDS

0:9

0:9

AD3LVDS

V+3VACTV

OR

LS2

ADR_PD_MSK

YDRV[0:23]

XDRV[0:7]

V+3V_D

SCL VKNOFS3 _ADJ
SDA VKNOFS4 _ADJ

V+3V_D

SQ_NON YSUS PD

ADRS_PD SUS _MUTE

YDD _PD

YDR V_ PD XKNOFS2 _ADJ

XDD _PD XDD PD
XSUS _ PD XSUS PD

PD _MUTE _ B

DRF_B
RELAY

ADRS_PD

Gen.

VKNOFS1 _2_ADJ

VOFS_ADJ
VYPRST _ADJ
XKOFS1_ADJ
VSUS_ADJ

V+3VACTV

SQ1_SD Gen.

INV

V+3VACTV SUS_MUTE

OR

V+3VACTV

PD_MUTE

V+3VACTV

AND

INV

VKNOFS1 _2_ADJ
VKNOFS3 _ADJ
VKNOFS4 _ADJ
VOFS _ ADJ
VYPRST_ADJ
SCN5V PD

YDD PD

XKOFS1 _ADJ

L1

D15

ADDRESS

L2

D16

ADDRESS

L3

D17

ADDRESS

L4

D18

ADDRESS

D20

50 Y DRIVE ASSY

D19

50 X DRIVE ASSY

A

B

C

D

E

_

TRG
_

_

M_SW_DET

RST MD

RST2

PS PD

PD

AC _DE

EEPRST

V+3VACTV

OR

PD_TRG_B DRF_SW
PS_ PD DRF _B
M_SW_DET EXT _PD

POWER SUPPLY UNIT

7

EEP RST

V+3V_D V+1V _D

V+12V

V+12V

V+12V V+8V

F

41

8

V+3VEEP V+3VACTV V+3VACTV

V+3V_D RST

RST2 V+3VACTV V+3VEEP

V+3VEEP V+3VEEP

SENSOR ASSY

V+3VEEP V+3VEEP AC _DET V SUS_ADJ

IC3652

IC3651

EEPROM

SENSOR

(Backup)

_

_

TEMP1

ESCL

ESDA

D22

BUSY

RXD1

TXD1

CLK1

CNVS

V+3VACTV

AND

D24 TE1 D21

PDP-4280XA

56

1234

4.11 POWER SUPPLY BLOCK of MULTI BASE SECTION

CN4105

A

B

V+6_5V

V+12V

V+5_1V

C

IC4309 IC6403

5V Reg
PQ200WNA1ZPH-TLB

IC4305

5V Reg
NJM2846DL3-05-TLB

IC4306 IC4407

5V Reg
NJM2846DL3-05-TLB

IC4307

5V Reg
NJM2846DL3-05-TLB

IC4301

8V Reg
PQ200WNA1ZPH-TLB

IC4310

FAN VCC Reg
PQ200WNA1ZPH-TLB

IC4403

DDC
BD8602FV-TBB

V+5V_USB

V+5V_ANT

V+5V_CI

V+5V_A

V+8V_A

FAN_VCC

V+3_3V_D

SW
R5523N001B-TLB

AAT4610AIGV-1-TLB

Q4415 IC4802

FET SW
RTQ040P02-TLB

V+3_3V_D2

USB1_VBUS

V+PC_VCC

V+5V_A2

V+5V_A_AV

V+8V_A_AV

V+3_3V_D2_VDEC_SDRAM

Q4418

FET SW
RTQ045N03-TLB

V+3_3V_D3

USB CONNECTOR

JA6201

COMMON INTERFACE
AKP1321-

IC4601
AV SW
R2S11006FT-K

TANSHI ASSY

FAN

V+3_3V_AU_D

IC9191

1.8V Reg
NJM2846DL3-18-TLB

VDEC SDRAM
HY57V161610FTP-7-K

V+3_3V_D3_HDMI V+3_3V_D3_HDMI_A

IC4404

1.8V Reg
NJM2846DL3-18-TLB

V+3_3V_D3_HDMI_IO

V+3_3V_D3_HDMI_REG

V+3_3V_D3_HDMISW

V+1_8V_A V+1_8V_A_HDMI

U6001

FRONT END
AXF1179-

V+5V_A2_RGB

IC5101

HDMI SW

CXB1442R-K

IC4701

RGB SW
R2S11001FT-K

V+3_3V_AU_A

V+1_8V_AU

V+1_8V_A_HDMI_A

V+1_8V_A_HDMI_C

V+1_8V_A_HDMI_D

ANT_POW_TU

V+31_5V

V+8V_AU

IC9101

MSP

MSP5651M-QK-C2-K

IC5201

HDMI Rx
SII9125CTU-K

Q4422

FET SW
MCH3406-TLB

D

Q4404

FET SW
RTQ040P02-TLB

V+1_2V_D

V+1_2V_D_ARIA

E

V+2_5V_D V+VDDIO_ARIA

V+2_5V_D_ARIA

V+3_3V_A__AD

IC4401

F

3.3V Reg
NJM2846DL3-33-TLB

V+3_3V_A

Q4409

FET SW
UPA1917TE-TRB

V+3_3V_D4

V+3_3V_A_VDEC

V+3_3V_D4_LVDS

V+3_3V_D4_LVDS_OUT

V+3_3V_D4_LVDS_PLL_A

V+3_3V_D4_LVDS_LVDS

V+3_3V_D4_ARIA_ROM

V+3_3V_D4_ARIA

V+1_2V_D_ARIA_PLL1

V+1_2V_D_ARIA_PLL2

V+1_2V_D_ARIA_PLL3

V+1_2V_D_ARIA_PLL4

V+VDDIO_ARIA_DDR_A

V+VDDIO_ARIA_DDR_C

IC4101

LVDS Tx
BU8254KVT-K

IC8204

ARIA ROM
AGC1050-A-PI-K
(S29GL016A90TFIR2-K)

IC8401

ARIA
UPD61123F1­100KA3A-K

IC8201
DDR SDRAM

EDD1232ABBH-5C-E-

IC8203

DDR SDRAM
EDD1232ABBH-5C-E-

V+1_8V_A_VDEC

V+3_3V_D_AD_D

V+3_3V_A__AD_A

V+3_3V_A__AD_PLL

IC5001

ADC
AD9985KSTZ-110-K

42

PDP-4280XA

1 234

5678

(

IC4410

CN4106

V+35V

V+3_3V_STB

FPF2007-TLB

Q4306

2SC4081(QR)-TLB

V+5_1V_STB

Q4512

FET SW
RSS090P03-TBB

V+3_3V_ACT

IC4501

DDC
LTC3407EMSE­2-TBB

Q4511

FET SW
RTQ040P02-TLB

V+2_5V_UCOM V+2_5V_UCOM2

V+1_5V_UCOM

V+3_3V_UCOM_USB

V+2_5V_EMMA

V+1_5V_UCOM_EMMA

V+3_3V_UCOM

Q4505

FET SW
MCH3406-TLB

V+1_5V_UCOM_USB

IC8301

IF UCOM
AGC1037- -PI-K
(M30620FCSGP-U5-K)

IC8401

EMMA2
UPD61123F1­100KA3A-K

V+1_5V_UCOM2

V+2_5V_UCOM_DDR

V+3_3V_UCOM_ROM

V+1_5V_UCOM_USB_D

V+1_5V_UCOM_USB_A

V+3_3V_UCOM_USB_D

V+3_3V_UCOM_USB_A

V+3_3V_UCOM_VBI

IC8601

DDR DRAM
XD,0XD 0XA
1:K4H511638D-UCB3-K 1:K4H561638H-UCB3-K

2:EDD5116AFTA-6B-E-K 2:HY5DU561622ETPJ-K
3:HY5DU121622CTP-J

IC8602

EMMA2 FLASH ROM
AGC1041- -PI-K

S29GL064A90TFIR90-

IC6401

USB CONROLLER
M66596FP-K

V+2_5V_UCOM_VBI

V+1_5V_UCOM_VBI

IC6301

VBI SLICER
TC90173FG-K

A

B

C

V+1_8V_A_VDEC_D

V+1_8V_A_VDEC_PLL

V+3_3V_D2_VDEC_D

IC4801

VDEC
CM0048BF-K

D

E

V+3_3V_A_VDEC_A

IC4406

1.8V Reg
NJM2846DL3-18-TLB

IC4405

3.3V Reg
NJM2846DL3-33-TLB

V+1_8V_BE

V+3_3V_BE V+3_3V_BE_COFDEM

V+1_8V_BE_COFDEM

PDP-4280XA

56

7

IC6101

COFDEM
DRX3975D-QI-B1-K

F

43

8

1234

4.12 TANSHI ASSY

A

TANSHI ASSY

IO6

B

+16.5V

+16.5V

IO5

PWM

DIGITAL AMP IC

IC9201

TAS5122DCA

LPF

C

L_OUT-

L_OUT+

R_OUT-

R_OUT+

DC

DETECT

BLOCK

+8V

A_NG_B

IO8

+3.3V

SPDIF_HDMI

OTW

+16.5V

REGULATOR

NJM78M12DL1A

MSP IC

IC9101

MSP5651M

RST_MSP

I2S_EMMA

SPDIF_EMMA

IO9

IC9181

SDA

SCL

+12V

+3.3V

AIR_SIF

+3.3V

REGULATOR

IC9191

NJM2846DL3

+1.8V

OUTPUT(AUDIO)

INPUT(AUDIO)

IO3

OPT_OUT

+1.8V

OPTICAL OUT

SUB WOOFER OUT
AUDIO OUT
SCART OUT

HP

INPUT1
INPUT2
INPUT3
INPUT5
PC AUDIO

OUTPUT(VIDEO)

INPUT(VIDEO)

INPUT5

IO4

for MAIN ASSY

IO1

for SIDE IO ASSY

IO2

for SIDE IO ASSY

for MAIN ASSY

D

42 inch only

L OUTR OUT

SP TERMINAL

50 inch only

E

F

44

PDP-4280XA

1 234

5678

4.13 42/60LED and 42IR (42RLS&IR) ASSYS

A

B

USB FAN

POWER SUPPLY UNIT

D11 P8 P9

M1 M3 M2 M21 M4

DIGITAL ASSY

M11

MAIN ASSY

M15

M6 M8 M9

M25

SR1

232C ASSY

IO4 IO3 IO5

TANSHI ASSY

C

D

E

LED_TIMER

LED_OFF

LED_ON

42/60LED ASSY

PDP-4280XA

56

F

42IR (42RLS&IR) ASSY

45

7

8

1234

4.14 POWER SUPPLY BLOCK of 42IR (42RLS&IR) and SIDE KEY ASSYS

A

42IR ASSY (PDP-4280XA, XD)
42RLS&IR ASSY (PDP-428XD)

V+5_1V_STB

IR
IC9752
SBX3050-01

B

V+3_3V_UCOM

CN9751

MAIN ASSY

RLS
IC9754
AMS114YD01

428XD ONLY

RLS
IC9754
AMS114YD01

C

SIDE KEY ASSY

V+3_3V_STB

KEY
S9501 to S9506

CN9501

MAIN ASSY

D

E

F

46

PDP-4280XA

1 234

5678

5. DIAGNOSIS

5.1 POWER SUPPLY OPERATION

5.1.1 LED DISPLAY INFORMATION

LED Pattern

POWER ON STANDBY SLEEP

SLEEP : Regular A model
TIMER : Step-up D model, Regular D model

A

State

AC OFF or Main
power switch OFF

Standby power
management

Power ON
(Screen ON)

Power-down

Shutdown

No digital adjustment
data copied for
backup

In the process of
rewriting the program
of the microcomputer

During factory
operation

During reservation
video recording
(Unit: Standby)

During reservation
video recording
(Unit: ON)

Sleep timer

LED Pattern Remarks

B

R

O

B

R

O

B

R

O

B Once Twice n times 2.5s Once

R 500ms

O

B 500ms

R Once Twice n times 2.5s Once

O

B 200ms

R

O

B 100ms

R 100ms

O

B

R

O

B

R

O

B

R

O

B

R

O

B

C

The LEDs flash only while the
panel is turned on.

Step-up D model,
Regular D model only

D

Step-up D model,
Regular D model only

Regular A model only

PDP-4280XA

56

E

F

47

7

8

1234

5.1.2 POWER ON SEQUENCE

A

REM
infrared
receiver

B

Side Keys

MOD

Microcomputer

IC3151

OR

Power MOD

4

RELAY Control

Inv. Amp

Q9731

KEY_1

REM

KEY_2

1

C

Inv. Amp

Q4105

SR_IN

Microcomputer

1

IF

IC8301

Inv. Amp

Q8302

SR_OUT

TXD_IF
RXD_IF
CE_IF
REQ_IF
BUSY_IF

TXD_MD
RXD_MD
REQ_MD

2

RELAY2

3

MAIN

Microcomputer

IC8401

SR OUT Jack
JA9404

D

1 : The remote control (or KEY) signal is input to the IF microcomputer.
2 : The IF microcomputer sends the operation data of the remote control unit (or KEY) to the main microcomputer.
3 : The main microcomputer issues a startup command (PON) to the MOD microcomputer.
4 : The relay is controlled with logical OR interpretation of control signals by the main microcomputer and module

(MOD) microcomputer.

E

F

48

PDP-4280XA

1 234

5678

5.1.3 DETAILS OF POWER ON SEQUENCE

Power supply status - AC off

Microcomputer
output port state

IF: ACTIVE
Main: RELAY2
Main: PSW1
Module: RELAY
Module: DRF_B

Microcomputer
input port state

Main: RST4
Main: RST2
Module: RST2

IR/Key/

OFF

232C

OFF
OFF
OFF
OFF

OFF
OFF
OFF

LED

EEPROM

VBI/

USB

SW

ACTIVE

Main

EEPROM

Digital

BAK_EEP

X/Y Drive

Scan

Sensor

The state of AC cord is pulled out.

IF ucom

Main_

Module_

DRIVE

ucom

ucom

AC_DET

M_SW_DET

M_SW_DET_B

RST3

RST4

PSW1

RST2

RELAY2

DCDC/REG

AND

AND

EMG_USB

OR

RELAY

DRF_B

DCDC/REG

VDEC
HDMI
ASIC

LVDS-Tx

DCDC/REG

AND

Address

PDET

A.TUNER

A.D.TUNER

D.TUNER

A.TUNER

A.D.TUNER

COFDEM

AAC-DEC

USB(Reg.)

ON OFF

DCDC/REG

AV-SW

ASIC

FAN

RGB-SW

AD

VBI

VBI
BCM

BCM
CIF

iLink

POD

RST2

LVDS-Rx

DAC

SQ ASIC

ADDRESS

R

US_SW

I/O

MAP

MAP

MSP

D-AMP

Power supply

STB

AC_
DET

M_SW

_DET

Jumper

P11

Vcc

Vsus
Vadr

DRIVE/SCAN

V+3.3V_STB
V+5.1V_STB

Relay

V+35V
V+16.5V
V+12V
V+6.5V
V+5.1V

VSUS
VADR

Main
Switch

A

AC

B

C

Power supply status - Passive standby (Main switch off)

Microcomputer
output port state

IF: ACTIVE
Main: RELAY2
Main: PSW1
Module: RELAY
Module: DRF_B

Microcomputer
input port state

Main: RST4
Main: RST2
Module: RST2

IR/Key/

OFF
OFF
OFF
OFF
OFF

OFF
OFF
OFF

232C

LED

EEPROM

VBI/

USB

Main

EEPROM

Digital

Sensor

SW

BAK_EEP

IF ucom

ACTIVE

Module_

X/Y Drive

Scan

DRIVE

Main_

ucom

ucom

"kill me"

M_SW_DET_B

PSW1

RST2

RELAY2

AC_DET

M_SW_DET

RST3

RST4

AND

EMG_USB

RELAY

DCDC/REG

AND

OR

DRF_B

DCDC/REG

VDEC
HDMI
ASIC

LVDS-Tx

DCDC/REG

AND

Address

PDET

The user operation is invalid. (All LED: OFF)
Among standby power devices, only the IF microcomputer periphery operates.

ON OFF

DCDC/REG

A.TUNER

A.D.TUNER

D.TUNER

A.TUNER

A.D.TUNER

VBI

VBI

COFDEM

BCM

BCM
CIF

iLink

POD

AAC-DEC

USB(Reg.)

RST2

AV-SW

FAN

RGB-SW

AD

LVDS-Rx

SQ ASIC

ADDRESSASIC

DAC

R

I/O

US_SW

MAP

MAP

MSP

D-AMP

Power supply

M_SW

_DET

Jumper

P11

Vsus
Vadr

DRIVE/SCAN

STB

AC_
DET

Vcc

V+3.3V_STB
V+5.1V_STB

Relay

V+35V
V+16.5V
V+12V
V+6.5V
V+5.1V

VSUS
VADR

AC

Main
Switch

D

E

F

PDP-4280XA

56

49

7

8

1234

A

Power supply status - Active standby (Main switch off)

Microcomputer

B

C

output port state

IF: ACTIVE
Main: RELAY2
Main: PSW1
Module: RELAY
Module: DRF_B

Microcomputer
input port state

Main: RST4
Main: RST2
Module: RST2

IR/Key/

ON

OFF
OFF
OFF

OFF

OFF
OFF
OFF

232C

LED

EEPROM

VBI/

USB

Main

EEPROM

SW

ACTIVE

IF ucom

Main_

ucom

Module_

ucom

AC_DET

M_SW_DET

M_SW_DET_B

RST3
RST4

PSW1

RST2

RELAY2

AND

AND

EMG_USB

RELAY

Digital

BAK_EEP

Sensor

X/Y Drive

Scan

DRIVE

DCDC/REG

The user operation is invalid. (All LED: OFF)
Standby power devices (periphery of IF/Main/Module microcomputer) operate.

OR

DRF_B

DCDC/REG

VDEC
HDMI
ASIC

LVDS-Tx

DCDC/REG

AND

Address

PDET

A.TUNER

A.D.TUNER

D.TUNER

A.TUNER

A.D.TUNER

AAC-DEC

USB(Reg.)

RST2

ON OFF

DCDC/REG

AV-SW

VBI

VBI

COFDEM

BCM

BCM
CIF

iLink

POD

FAN

RGB-SW

AD

LVDS-Rx

DAC

SQ ASIC

ADDRESSASIC

R

I/O

US_SW

MAP

MAP

MSP

D-AMP

Power supply

M_SW

_DET

Jumper

P11

Vsus
Vadr

DRIVE/SCAN

STB

AC_
DET

Vcc

V+3.3V_STB
V+5.1V_STB

Relay

V+35V
V+16.5V
V+12V
V+6.5V
V+5.1V

VSUS
VADR

AC

Main
Switch

Power supply status - Passive standby

Microcomputer

D

E

F

output port state

IF: ACTIVE
Main: RELAY2
Main: PSW1
Module: RELAY
Module: DRF_B

Microcomputer
input port state

Main: RST4
Main: RST2
Module: RST2

IR/Key/

OFF

232C

OFF
OFF
OFF
OFF

OFF
OFF
OFF

LED

EEPROM

VBI/

USB

SW

Main

EEPROM

Digital

BAK_EEP

Sensor

Remote control unit waiting state. (Red LED: ON)
Among standby power devices, only the IF microcomputer periphery operates.

IF ucom

ACTIVE

Main_

ucom

Module_

ucom

X/Y Drive

Scan

DRIVE

"kill me"

RELAY2

AC_DET

M_SW_DET

M_SW_DET_B

RST3

AND

RST4

PSW1

AND

RST2

EMG_USB

OR

RELAY

DCDC/REG

DRF_B

DCDC/REG

VDEC
HDMI
ASIC

LVDS-Tx

DCDC/REG

AND

Address

PDET

ON OFF

DCDC/REG

A.TUNER

A.D.TUNER

D.TUNER

A.TUNER

A.D.TUNER

VBI

VBI

COFDEM

BCM

BCM
CIF

iLink

POD

AAC-DEC

USB(Reg.)

RST2

ASIC

AV-SW

FAN

RGB-SW

AD

LVDS-Rx

SQ ASIC

ADDRESS

DAC

R

I/O

US_SW

MAP

MAP

MSP

D-AMP

Power supply

M_SW

_DET

Jumper

P11

V+3.3V_STB
V+5.1V_STB

STB

AC_
DET

Vcc

Vsus
Vadr

DRIVE/SCAN

Relay

VSUS
VADR

V+35V
V+16.5V
V+12V
V+6.5V
V+5.1V

AC

Main
Switch

50

PDP-4280XA

1 234

5678

Power supply status - Active standby

Microcomputer
output port state

IF: ACTIVE
Main: RELAY2
Main: PSW1
Module: RELAY
Module: DRF_B

Microcomputer
input port state

Main: RST4
Main: RST2
Module: RST2

IR/Key/

ON

OFF
OFF
OFF
OFF

OFF
OFF
OFF

232C

LED

EEPROM

VBI/

USB

SW

ACTIVE

IF ucom

Main_

ucom

Main

"POF"

EEPROM

Module_

ucom

Digital

BAK_EEP

Sensor

X/Y Drive

Scan

DRIVE

Remote control unit waiting state. (Red LED: ON)
Standby power devices (periphery of IF/Main/Module microcomputer) operate.

AC_DET

M_SW_DET

M_SW_DET_B

RST3

RST4

PSW1

RST2

RELAY2

DCDC/REG

AND

AND

EMG_USB

OR

RELAY

DRF_B

DCDC/REG

VDEC
HDMI
ASIC

LVDS-Tx

DCDC/REG

AND

Address

PDET

A.TUNER

A.D.TUNER

D.TUNER

A.TUNER

A.D.TUNER

COFDEM

AAC-DEC

USB(Reg.)

ON OFF

DCDC/REG

AV-SW

VBI

VBI
BCM

BCM
CIF

iLink

POD

RST2

FAN

RGB-SW

AD

LVDS-Rx

DAC

SQ ASIC

ADDRESSASIC

R

I/O

US_SW

MAP

MAP

MSP

D-AMP

Power supply

M_SW

_DET

Jumper

P11

Vsus
Vadr

V+3.3V_STB
V+5.1V_STB

STB

AC_
DET

Vcc

DRIVE/SCAN

Relay

VSUS
VADR

Power

V+35V
V+16.5V
V+12V
V+6.5V
V+5.1V

AC

Main
Switch

A

B

C

Power supply status - Functional standby

Microcomputer
output port state

IF: ACTIVE
Main: RELAY2
Main: PSW1
Module: RELAY
Module: DRF_B

Microcomputer
input port state

Main: RST4
Main: RST2
Module: RST2

IR/Key/

ON
ON

OFF
OFF
OFF

ON

OFF
OFF

232C

LED

EEPROM

VBI/
USB

Main

SW

ACTIVE

IF ucom

Main_
ucom

AC_DET

M_SW_DET_B

PSW1

RST2

RELAY2

"POF"

EEPROM

Module_

ucom

Digital

BAK_EEP

Sensor

X/Y Drive
Scan

DRIVE

Remote control unit waiting state. (Red LED: ON)
Standby power device and some Vcc power devices operate.
RGB-SW/AD/D-AMP are electrified, but uses the power-saving mode function of the IC.

M_SW_DET

RST3

AND

RST4

AND

EMG_USB

OR

RELAY

DRF_B

DCDC/REG

DCDC/REG

VDEC
HDMI
ASIC

LVDS-Tx

DCDC/REG

AND

Address

PDET

DCDC/REG

A.TUNER

A.D.TUNER

D.TUNER

A.TUNER

A.D.TUNER

COFDEM

iLink

AAC-DEC

USB(Reg.)

RST2

ON OFF

AV-SW

CIF

FAN

RGB-SW

AD

VBI

VBI
BCM

BCM
POD

LVDS-Rx

SQ ASIC

ADDRESSASIC

DAC

R

I/O

D-AMP

US_SW

MAP

MAP

MSP

Power supply

STB

AC_
DET

M_SW

_DET

Jumper

P11

Vcc

Vsus
Vadr

DRIVE/SCAN

V+3.3V_STB
V+5.1V_STB

Relay

V+35V
V+16.5V
V+12V
V+6.5V
V+5.1V

VSUS
VADR

AC

Main
Switch

D

E

F

PDP-4280XA

56

51

7

8

1234

A

Power supply status - ON

Microcomputer
output port state

IF: ACTIVE ON
Main: RELAY2
Main: PSW1
Module: RELAY
Module: DRF_B

Microcomputer
input port state

Main: RST4

B

Main: RST2
Module: RST2

C

IR/Key/

ON
ON

ON
ON

ON
ON

ON

232C

LED

EEPROM

VBI/
USB

Main

EEPROM

Digital

BAK_EEP

Sensor

SW

IF ucom

ACTIVE

Main_

ucom

"PON"

Module_

ucom

X/Y Drive

Scan

DRIVE

AC_DET

M_SW_DET

M_SW_DET_B

RST3
RST4

PSW1

RST2

EMG_USB

RELAY2

RELAY

DCDC/REG

AND

AND

OR

DRF_B

DCDC/REG

VDEC
HDMI
ASIC

LVDS-Tx

DCDC/REG

AND

Address

A state when it displays a picture on the PDP. (Blue LED: ON)
All devices are electrified.

PDET

ON

DCDC/REG

A.D.TUNER

COFDEM

CIF

RST2

ASIC

AV-SW

FAN

RGB-SW

AD

LVDS-Rx

SQ ASIC

ADDRESS

DAC

OFF

R

I/O

D-AMP

US_SW

MSP

Power supply

STB

M_SW

_DET

Jumper

P11

Vsus
Vadr

DRIVE/SCAN

AC_
DET

Vcc

V+3.3V_STB
V+5.1V_STB

Relay

V+35V
V+16.5V
V+12V
V+6.5V
V+5.1V

VSUS
VADR

AC

Main
Switch

D

E

F

52

PDP-4280XA

1 234

5678

5.2 DIAGNOSIS FLOWCHART OF FAILURE ANALYSIS

5.2.1 WHOLE UNIT

Flowchart of Failure Analysis for The Whole Unit

START

Problems concerning STB status

Is the STB LED lit?

Ye s

Problems concerning the power

Can the unit be turned on
(Relay ON)?

Ye s

A shutdown occurs.

No

A power-down occurs.

No

Problems concerning lighting of the panel

Note: Check that the Main power SW is ON side.

No

Is STB 3.3 V power supplied?
(Check the power at the IF micro­computer on the MAIN Assy.)

Ye s

Are the voltages at AC_DET and
MSW_DET on the POWER
SUPPLY Unit high?

Failure analysis for the
MAIN Assy => MA1

No

Is the power shutdown?

Ye s

See "Shutdown diagnosis." => SD

Ye s

See "Power-down diagnosis." => PD

Ye s

If AC_DET or MSW_DET is Low, LED goes off.

Ye s

No

Check if the cable that connects
the POWER SUPPLY and MAIN
Assys is firmly connected.

No

Replace the POWER SUPPLY
Unit.

Is the voltage at the RELAY port

No

of the connectors between the
DIGITAL Assy and POWER
SUPPLY Unit H (3.3 V)?

Ye s

Failure analysis for the
POWER SUPPLY Unit => PS2

A power-down will not be generated if the drive is off.

NG

Failure analysis for the
POWER SUPPLY Unit => PS1

No

Failure analysis for the
MAIN Assy => MA2

If a module microcomputer does not set a
relay in High, there is a possibility that a
main microcomputer does not issue a
command (PON).

A

B

C

D

Does the screen display reset
lighting?

Ye s

Is the panel arbitrary turned on or
off repeatedly? Or do luminescent
spots appear on the screen?

No

Is there any local abnormality
on the screen?

No

A

56

No

Is the drive off?

No

Failure analysis for the
drive system => DR1

Ye s

Failure analysis for the
POWER SUPPLY Unit => PS3

Failure analysis for the
drive system => DR2

Ye s

Ye s

Is the abnormality associated
with one ADDRESS or one TCP?

Ye s

Failure analysis for the
drive system => DR3

Ye s

Turn the drive on.

In a case where luminescent spots appear
or the panel is repeatedly turned on or off

In a case where luminescent spots appear

No

Is the abnormality associated
with a single scan line?

Ye s

Failure analysis for the
drive system => DR4

PDP-4280XA

7

• Check the DRF SW.

• Before turning the drive off with the RS-232C
commands or using the remote control unit,
turn the unit off.

No

Replace the panel chassis.

8

E

F

53

1234

A

A

In the subsequent diagnostic steps, it is most likely that the multi base section is in failure.

Problems concerning video display

Is the panel mask properly
displayed?

Ye s

B

Is the on-screen display (OSD)
properly displayed?

Is an external video signal
displayed properly?

C

Is the audio signal output?

Specific failure whose cause is
difficult to identify in the initial stage

Check with the animated slanting ramp mask.

Ye s

Check on the Factory menu.

Ye s

Ye s

No

Is it return to properly indication
when a command (PMTS00) is
issued?

No

Failure analysis for the
DIGITAL Assy => DG1

No

Failure analysis for the
MAIN Assy => MA3

Problems concerning the audio output

No

Failure analysis for the
audio system => AU1

No

Failure analysis for the
drive system => DR2

No

Failure analysis for the
MAIN Assy => MA4

A main microcomputer may stop in the state
that it hung a panel mute due to something.

D

E

F

54

PDP-4280XA

1 234

5678

5.2.2 POWER SUPPLY UNIT

Flowchart of Failure Analysis for The POWER SUPPLY Unit

Failure analysis for the
POWER SUPPLY Unit => PS1

STB 3.3 V power is not output.

A

Failure analysis for the
POWER SUPPLY Unit => PS2

Is the cable connected firmly to
the P8 connector?

Ye s

Is the cable to the P8 connector
broken?

No

Is the fuse (F101) blown?

No

Is one of the limiting resistors
(R104/R105) blown?

No

The POWER SUPPLY Unit is
normal.

The power is not on, even though
the RELAY port is active.

Is the relay (RL102) on?

Ye s

Is the PFC voltage normal?

Ye s

The POWER SUPPLY Unit is
normal.

No

Properly connect the cable
between the P8 and M3 connectors.

Ye s

Replace the defective cable (J106).

Ye s

Replace the POWER SUPPLY
Unit.

Ye s

Replace the POWER SUPPLY
Unit.

No

Replace the POWER SUPPLY
Unit.

No

Replace the POWER SUPPLY
Unit.

Check the voltage at the DIGITAL Assy and
POWER SUPPLY Unit.

Check the resistance between L102 (lead
nearest R104) and the D121 anode,
using a tester.

• Check the relay operation at the terminal
(Pin 11 of P4). (Voltage: 3.3 V)

• Check the relay sound (click).

• Check the voltage between the D204
cathode and RC101 (negative) terminal.

• The voltage must be around 390 V
(failure if it is 340 V or less).
Caution: High voltage!

B

C

Failure analysis for the
POWER SUPPLY Unit => PS3

The cells of the panel do not
light normally.

Is the VADR voltage within the
specified values?

Ye s

Is there a fluctuation in the
VADR voltage?

No

Is the VSUS voltage within the
specified range?

Ye s

Is there a fluctuation in the
VSUS voltage?

No

The POWER SUPPLY Unit is
normal.

No

Replace the POWER SUPPLY
Unit.

Ye s

Replace the POWER SUPPLY
Unit.

No

Replace the POWER SUPPLY
Unit.

Ye s

Replace the POWER SUPPLY
Unit.

The specified voltage values are between
57 and 63 V.

The ripple must be within 5 V.

The specified voltage values are between
200 and 210 V (VSU: 125/35°C).

The ripple must be within 10 V.

D

E

F

PDP-4280XA

56

55

7

8

1234

5.2.3 DRIVE ASSY

Flowchart of Failure Analysis for The Drive Assy

A

Failure analysis for the
drive system => DR1

Reset lighting is not displayed.

X/Y DRIVE Assys

Is the waveform normal when the

B

voltage is applied to the panel?

Are the panel FPC and SCAN Assys
connectors properly connected to
the X/Y DRIVE Assys?

Ye s

Replace the panel chassis.

C

D

No

No

Properly connect the panel FPC
and SCAN Assys connectors.

NG

Are the FFC cables properly
connected?

Ye s

Is the input signal normal?

Ye s

Replace the X/Y DRIVE Assys.

No

Properly connect the FFC cables.

NGYe s

No

Replace the FFC cables.

NG

Replace the DIGITAL Assy.

E

F

56

1 234

PDP-4280XA

5678

Failure analysis for the
drive system => DR2

Abnormality across the whole
screen, such as luminescent spots

A

Because it is difficult to identify which drive is in failure, follow the flowchart below to check each Assy.

X DRIVE AssyY DRIVE Assy / SCAN A, B Assy

Y DRIVE Assy

Are all the connectors properly
connected?

Ye s

Is the VH set voltage (130 V)
correctly set?

Ye s

Is the VSNOFS set voltage correctly
set (set value: designated for each panel)?

Ye s

Is the VYRST set voltage correctly
set (set value: designated for each panel)?

Ye s

Is the VKNOFS1, 2 set voltage
correctly set?

Ye s

Is the VKNOFS3 set voltage correctly
set (set value: designated for each panel)?

Ye s

No

No

No

No

No

No

ADDRESS Assy

B

B

Reconnect the connectors.

Set the VH voltage correctly.

Set the VSNOFS voltage correctly.

Set the VYRST voltage correctly.

Set the VKNOFS1, 2 voltage correctly.

Set the VKNOFS3 voltage correctly.

C

NG

NG

C

NG

NG

NG

D

NG

Is the VKNOFS4 set voltage correctly
set (set value: designated for each panel)?

Another Assy may be in failure.

Is the input signal normal?
(See the oscilloscope photos.)

Ye s

Ye s

Ye s

Is the waveform normal when the
voltage is applied to the panel?
(See the oscilloscope photos.)

No

No

No

D

Is the waveform of the control
signal from the SCAN Assy normal?
(See the oscilloscope photos.)

Ye s

Replace the SCAN IC.

56

No

PDP-4280XA

Set the VKNOFS 4voltage correctly.

NG

E

Replace the FFC cables.

NG

Replace the DIGITAL Assy.

Replace the Y DRIVE Assy.

F

57

7

8

1234

A

Are all the connectors properly
connected?

Is the VXKOFS1 set voltage
correctly set?

B

Is the VXKOFS2 set voltage
correctly set?

D

Another Assy may be in failure.

C

Is the input signal normal?
(See the oscilloscope photos.)

X DRIVE Assy

B

Ye s

Ye s

Ye s

Ye s

No

No

No

Ye s

Is the waveform normal when the
voltage is applied to the panel?
(See the oscilloscope photos.)

No

No

Reconnect the connectors.

NG

Set the VXKOFS1 voltage correctly.

NG

Set the VXKOFS2 voltage correctly.

NG

Replace the FFC cables.

NG

Replace the X DRIVE Assy.

ADDRESS Assy

C

Are all the connectors properly
connected?

D

Is the TCP control signal normal?
(See the oscilloscope photos.)

E

Ye s

Ye s

No

No

Replace the panel chassis.

Replace the DIGITAL Assy.

Reconnect the connectors.

NG

Is the input signal normal?
(See the oscilloscope photos.)

Ye s N o

Replace the FFC cables.

NG

Replace the DIGITAL Assy.

F

58

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PDP-4280XA

5678

Failure analysis for the
drive system => DR3

The abnormality is associated with
one ADDRESS or one TCP?

A

Diagnose the ADDRESS Assy.

Is the TCP control signal normal?

Ye s Ye s

Replace the panel chassis.

In most cases of damage on one line,
the panel chassis must be replaced.

Failure analysis for the
drive system => DR4

The abnormality is associated
with a single scan line.

Is the waveform normal when the
voltage is applied to the panel?

Ye s

No

Are the FFC cables properly
connected?

NG

Replace the DIGITAL Assy.

Diagnose the SCAN A and B Assys.

No

Is the 15-pin bridge connector plug
connected properly to the socket?

Ye s

Is the waveform of the SCAN IC
control signal from the Y DRIVE
Assy normal?

Ye s

No

Properly connect the FFC cables.

NG

If the FFC cable that connects the DIGITAL and ADDRESS Assys is in failure,
the abnormality is associated with one ADDRESS in most cases.

No

Reconnect the plugs properly.

NG

No

Replace the Y DRIVE Assy.

B

C

D

Replace the SCAN IC.

NG

Replace the panel chassis.

56

PDP-4280XA

E

F

59

7

8

1234

5.2.4 DIGITAL ASSY

Flowchart of Failure Analysis for The DIGITAL Assy

A

Failure analysis for the
DIGITAL Assy => DG1

The on-screen display (OSD) is
not properly indicated.

Is V sync judgment detected by
issuing the QSI command?

B

C

Is the indication position
correct?

Is the tone correct?

D

Ye s

Ye s

Ye s

• If the OSD is not properly displayed although the panel mask is properly displayed,
a failure exists in the path from the output of IC2801 on the MAIN Assy to IC3401 on the DIGITAL Assy.

-> If only the OSD is abnormal, the MAIN Assy is in failure.

No

Is the sync signal properly output
from the MAIN Assy?

Ye s

No

Is the 50-pin FFC cable (J211)
firmly connected?

Ye s

Is the 50-pin FFC cable (J211)
broken?

No

Is the FFC connector poorly
contacted?

Ye s

DIGITAL : D11
MAIN : M1

No

Replace the MAIN Assy.

If neither the V frequency nor H existence judgment is inappropriate, it is most likely
that the output from the DIGITAL Assy is in free run and that the screen only displays
reset lighting.
(It is judged that the drive, POWER SUPPLY Unit and the panel are normal.)

No

Firmly connect the 50-pin FFC
cable (J211).

When disconnecting the FFC cable, take care not to damage the CN3001 connector
on the DIGITAL Assy, which can easily be damaged.

Ye s

Replace the 50-pin FFC cable
(J211).

In a case of D11

No

Replace the DIGITAL Assy.

In a case of M1

Replace the MAIN Assy.

Replace the MAIN Assy.

No

It is most likely that the sync signal is abnormal.

No

It is most likely that the video signal data are missing.

Replace the MAIN Assy.

E

F

60

PDP-4280XA

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5678

5.2.5 MAIN ASSY

Flowchart of Failure Analysis for The MAIN Assy

Failure analysis for the
MAIN Assy => MA1

The STB LED does not light although
STB 3.3 V power is supplied.

No

Does the POWER switch on?

Ye s

Is resetting of the IF
microcomputer canceled?

Ye s

Is the voltage at Pin 3 of the M11
connector High?

Ye s

Is the M11 connector securely
connected?

Ye s

Is the cable that is connected to
the M11 connector broken?

No

No problem with the MAIN Assy.
Check the LED Assy.

Turn the POWER switch on.

No

Replace the MAIN Assy.

No

Replace the MAIN Assy.

No

Securely connect the M11 connector.

Ye s

Replace the cable (J115: ADX3540).

A

Failure in the RST IC (IC8302) output or its peripheral circuits

B

Failure in the line between the IF microcomputer and M11 connector

C

Failure analysis for the
MAIN Assy => MA2

The RELAY port does not work.
The power is not turned on.

Does the POWER switch on?

Ye s

Is the voltage at Pin 3 of the M1
connector 3.3 V?

Ye s

Are the voltages (3.3 V/2.5 V/1.5 V)
supplied to the main microcomputer?

Ye s

Is voltage at REQ_IF on the MAIN
Assy High (3.3 V)?

Ye s

No

Turn the POWER switch on.

No

Replace the MAIN Assy.

No

Replace the MAIN Assy.

No

Can the unit be turned on, using
the remote control unit?

Ye s

Can the unit be turned on, using
the Power switch on the unit?

Ye s

Can the unit be turned on, using
RS-232C commands?

Relay control is unable unless it supplies a power supply to the module microcompute.

• Failure in the output of REG IC (IC4501).

• Is active low?

Replace the cable that connects

No

between the IR and MAIN Assys.

No

Replace the cable that connects
between the SIDE KEY and MAIN Assys.

No

Replace the 232C or MAIN Assys.

Failure in the RS-232C driver and its
peripheral circuits

No

Replace the IR Assy.

Replace the MAIN Assy.

No

Replace the SIDE KEY Assy.

Replace the MAIN Assy.

No

No

D

E

Replace the MAIN Assy.

56

Failure in the Main microcomputer.

PDP-4280XA

F

61

7

8

1234

5.2.6 VIDEO SYSTEM

Flowchart of Failure Analysis for The Video System

A

=> MA3

The input signal is not displayed.

Is the Terrestrial analog signal
not displayed?

Is the composite signal input not

B

displayed?

Is the S-video signal input not
displayed?

Is the RGB signal input not
displayed?

Is the component signal input not
displayed?

C

Is the PC signal input not
displayed?

Is the Terrestrial digital signal
not displayed?

Is the HDMI signal input not
displayed?

D

No

No

No

No

No

No

No

Ye s

Ye s

=> ATV

Ye s

=> COMP / S1

Ye s

=> COMP / S1

Ye s

=> RGB

Ye s

=> COMP / PC1

Ye s

=> COMP / PC2

Ye s

=> DTV

Are the data displayed on the

Ye s

"HDMI SIGNAL INFO" page of
the Factory menu correct?

Ye s

After changing the source

No

equipment, check the "HDMI
SIGNAL INFO" data again.

OK

The source equipment previously
used is in failure.
No problem with the MAIN Assy.

NG

Replace the MAIN Assy.

E

No problem with the MAIN Assy.

F

62

1 234

Does the result of SIG mode
detection on the Factory menu
coincide with the input signal data?

Ye s

Replace the MAIN Assy.

PDP-4280XA

No

Is the sync signal output from
IC5201?

Ye s

Is the sync signal input to IC8001?

Ye s

Replace the MAIN Assy.

No

Replace the MAIN Assy.

No

Replace the MAIN Assy.

5678

Flowchart of Failure Analysis for The Video System

=> ATV

Image for the Terrestrial analog signal
is not displasyed.

Ye s

Is the selected input signal a
Terrestrial analog signal?

Ye s

Has the signal arrived at
IC4601 (AVSW)? (pin 57)

Ye s

Has the HS signal arrived at
IC8301 (FUCOM)? (pin 3)

Ye s

Which signal is not output,
main or sub signal?

Main

Is a signal output from
IC4601 (AVSW)? (pin 45)

Ye s

Has the signal arrived at IC4801
(VDEC)? (pin 22)

Ye s

Are the data output from IC4801
(VDEC)? (pins 93 to 97, 99 to 104,
107 to 109)

Ye s

No

Select a Terrestrial analog signal.

No

1

2

3

4

5

Has the signal arrived at emitter
of Q6001?

No

Has the signal arrived at pin 6
of Q6007?

Sub

Check around IC4601 and check the

No

communications between IC4601
and microcomuputer. If there was
no ploblem, replace the MAIN Assy.

No

Check the circuit between IC4601 and
IC4801 and replace broken parts.

Check around IC4801 and check the

No

communications between IC4801
and microcomuputer. If there was
no ploblem, replace the MAIN Assy.

No

Has the signal arrived at C6027?

No

Has the signal arrived at R6008?

No

Is a signal output from
IC4601? (pin 49)

Ye s

No

Has the signal arrived at
IC4801? (pin 70)

Ye s

No

Is a data output from IC4801?
(pins 79 to 86, 88 to 90)

Ye s

A

No

Replace the U6001
(TUNER).

No

Replace the U6001
(TUNER).

B

6

C

7

8

Is the communication between
each IC (VDEC, ASIC) on the
MAIN Assy and the microcomputer
normal?

Ye s

Replace the MAIN Assy.

Waveforms

Input signal: PAL Color-bar (Analog tuner)

IC4601 - pin 57

1

V: 500 mV/div H: 10 μS/div

IC4801 - pin 93, etc.

5

V: 1 V/div H: 2 μS/div

Check around the IC that is found to

No

have failure in communication and
the microcomputer. If there was no
ploblem, replace the MAIN Assy.

IC8301 - pin 3

2 3

V: 1 V/div H: 10 μS/div

IC4601 - pin 49

6

V: 500 mV/div H: 10 μS/div

IC4601 - pin 45

V: 500 mV/div H: 10 μS/div

IC4801 - pin 70

7

V: 500 mV/div H: 10 μS/div

IC4801 - pin 22

4

V: 500 mV/div H: 10 μS/div

IC4801 - pin 79, etc.

8

V: 500 mV/div H: 10 μS/div

D

E

F

PDP-4280XA

56

63

7

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1234

A

Flowchart of Failure Analysis for The Video System

=> COMP/S1

Image for the composite or S-video
signal is not displasyed.

Ye s

Is the function correspondeing to
selected signal input selected?

B

Has the signal arrived at IC4601
(AVSW)?

Ye s

Ye s

No

Select the corresponding signal
with the Input selector.

No

Check the flexible cable between CN8804 and CN4004.
Check the flexible cable between CN8801 and CN9351.
Check the cable between CN8802 and CN9352.
Check around input terminals.

No

Replace the FFCs or cables.

Which signal is not output,
main or sub signal?

Is a signal output from
IC4601? (pins 42 and 45)

C

Has the signal arrived at IC4801
(VDEC)?
(pins 22 and 26)

Is the communication between
each IC (VDEC, ASIC) on the
MAIN Assy and the microcomputer
normal?

D

E

Replace the MAIN Assy.

Waveforms

Input signal: PAL Color-bar (S terminal)

IC4601 - pin 42

8

V: 500 mV/div H: 20 μS/div

Main

Ye s

Ye s

Ye s

Sub

Check around IC4601 and check the

No No

8 9

1110

communications between IC4601
and microcomuputer. If there was
no ploblem, replace the MAIN Assy.

Check the emitter-follower circuit

No

between IC4601 and IC4801 and
repair the failure points.

Check around the IC that is found to

No

have failure in communication and
the microcomputer. If there was no
ploblem, replace the MAIN Assy.

IC4601 - pin 45

9 10

V: 500 mV/div H: 20 μS/div

Is the screen of main side
Analog/Digital TV?

Is a signal output from
IC4701? (pins 47 and 49)

No

Has the signal arrived at
IC4801? (pins 69 and 70)

IC4801 - pin 22

V: 500 mV/div H: 20 μS/div

Ye s

12 13

Ye s

14 15

Ye s

IC4801 - pin 26

11

V: 500 mV/div H: 20 μS/div

No

Specifications that does not
display in the sub-side.

IC4701 - pin 47

12

V: 500 mV/div H: 20 μS/div

F

64

1 234

IC4701 - pin 49

13

V: 500 mV/div H: 20 μS/div

IC4801 - pin 69

14

V: 500 mV/div H: 20 μS/div

PDP-4280XA

IC4801 - pin 70

15

V: 500 mV/div H: 20 μS/div

5678

Flowchart of Failure Analysis for The Video System

=> RGB

Image for the RGB input signal
is not displasyed.

Ye s

1716 18

212019

No

Select the corresponding signal
with the Input selector.

Sub

Is the screen of main side
Analog/Digital TV?

Ye s

Has the signal arrived at IC4601
(AVSW)?

No

Check the flexible cables between the CN8804 and

No

CN4004 or around of input terminals.

Check around IC4701 and check the

No

communications between IC4701
and microcomuputer. If there was
no ploblem, replace the MAIN Assy.

No

Check the circuit between IC4701 and
IC4801 and replace broken parts.

Is the function correspondeing to
selected signal input selected?

Ye s

Which signal is not output,
main or sub signal?

Main

Has the signal arrived at IC4701
(RGBSW)?

Ye s

Is a signal output from IC4701?
(pins 41, 43 and 45)

Ye s

Has the signal arrived at IC4801?
(pins 27, 28 and 65)

Ye s

No

Specifications that does not
display in the sub-side.

Ye s

No

Is a signal output from IC4601?
(pins 47 and 49)

Ye s

Has the signal arrived at IC4801?
(pins 69 and 70)

Ye s

Replace the FFCs or cables.

Check around IC4601 and check the

No

12 13

14 15

communications between IC4601
and microcomuputer. If there was
no ploblem, replace the MAIN Assy.

Check the emitter-follower circuit

No

between IC4601 and IC4801 and
repair the failure points.

A

B

C

Is the communication between
each IC (VDEC, ASIC) on the
MAIN Assy and the microcomputer
normal?

Ye s

Replace the MAIN Assy.

Waveforms

Input signal: PAL Color-bar (SCART RGB terminal)

IC4701 - pin 41

16

V: 500 mV/div H: 20 μS/div

IC4801 - pin 27

19

V: 500 mV/div H: 20 μS/div

No

IC4701 - pin 43

17 18

V: 500 mV/div H: 20 μS/div

IC4801 - pin 28

20

V: 500 mV/div H: 20 μS/div

Check around the IC that is found to
have failure in communication and
the microcomputer. If there was no
ploblem, replace the MAIN Assy.

IC4701 - pin 45

V: 500 mV/div H: 20 μS/div

IC4801 - pin 65

21

V: 500 mV/div H: 20 μS/div

D

E

F

PDP-4280XA

56

65

7

8

1234

A

Flowchart of Failure Analysis for The Video System

=> COMP/PC1

Image for the component signal
is not displayed.

Ye s

Is the function corresponding to
selected signal input selected?

B

Has the signal arrived at IC4701
(RGBSW) ?
(pins 70, 72, 74)

Ye s

No

Select the corresponding signal
with the input selector.

No

Check the flexible cables between the CN8804

242322

and CN4004 or around of pin jack.

Ye s

Which signal is not output,
main or sub signal?

Main

Sub

Is the screen of main side
Analog/Digital TV?

Ye s

No

Replace the flexible cable.

No

Specifications that does not
display in the sub-side.

Is a signal output from IC4701?
(pins 20, 22, 24)

C

Ye s

Has the signal arrived at IC5001
(ADC)?
(pins 43, 48, 54)

Ye s

Is the communication between
each IC (ADC, ASIC) on the
MAIN Assy and the microcomputer
nomal?

Ye s

D

E

Replace the MAIN Assy.

Waveforms

Input signal: Color-bar (Component 1080i)

IC4701 - pin 70

22

V: 500 mV/div H: 10 μS/div

Check around IC4701 and check the communications

No

272625

302928

between IC4701 and the microcomputer.
If there was no ploblem, replace the MAIN Assy.

No

Check the circuit between IC4701 and IC5001.
If there was no ploblem, replace the MAIN Assy.

Check around the IC that is found to have a failure

No

in communication and the microcomputer.
If there was no ploblem, replace the MAIN Assy.

IC4701 - pin 72

23

V: 500 mV/div H: 10 μS/div

IC4701 - pin 74

24

V: 500 mV/div H: 10 μS/div

IC4701 - pin 20

25

V: 500 mV/div H: 10 μS/div

IC4701 - pin 22

26

V: 500 mV/div H: 10 μS/div

IC4701 - pin 24

27

V: 500 mV/div H: 10 μS/div

F

66

1 234

IC5001 - pin 43

28

V: 500 mV/div H: 10 μS/div

IC5001 - pin 48

29

V: 500 mV/div H: 10 μS/div

PDP-4280XA

IC5001 - pin 54

30

V: 500 mV/div H: 10 μS/div

5678

Flowchart of Failure Analysis for The Video System

=> COMP/PC2

Image for the PC signal is not
displayed.

Ye s

Is the function corresponding to
selected signal input selected?

Ye s

Has the signal arrived at IC4701
(RGBSW)? (pins 61, 62, 64, 66,

68)

3231

Ye s

Which signal is not output,
main or sub signal?

Main

Is a signal output from IC4701?
(pins 20, 22, 24)

Ye s

Has the signal arrived at IC5001
(ADC)?
(pins 43, 48, 54)

Ye s

No

Select the corresponding signal
with the input selector.

No

Check around the input terminal (CN4701).
If there was no ploblem, replace the MAIN Assy.

353433

Sub

Is the screen of main side
Analog/Digital TV?

Ye s

Check around IC4701 and check the communications

No

383736

414039

between IC4701 and the microcomputer.
If there was no ploblem, replace the MAIN Assy.

No

Check the circuit between IC4701 and IC5001.
If there was no ploblem, replace the MAIN Assy.

No

Specifications that does not
display in the sub-side.

A

B

C

Is the communication between
each IC (ADC, ASIC) on the MAIN
Assy and the microcomputer
nomal?

Ye s

Replace the MAIN Assy.

Waveforms

Input signal: Color-bar (PC XGA/60 Hz)

IC4701 - pin 61

31

V: 1 V/div H: 2 mS/div

IC4701 - pin 20

36

V: 500 mV/div H: 10 μS/div

IC5001 - pin 54

41

V: 500 mV/div H: 10 μS/div

Check around the IC that is found to have a failure

No

in communication and the microcomputer.
If there was no ploblem, replace the MAIN Assy.

IC4701 - pin 62

32

V: 1 V/div H: 10 μS/div

IC4701 - pin 22

37

V: 500 mV/div H: 10 μS/div

IC4701 - pin 64

33

V: 500 mV/div H: 10 μS/div

IC4701 - pin 24

38

V: 500 mV/div H: 10 μS/div

IC4701 - pin 66

34

V: 500 mV/div H: 10 μS/div

IC5001 - pin 43

39

V: 500 mV/div H: 10 μS/div

IC4701 - pin 68

35

V: 500 mV/div H: 10 μS/div

IC5001 - pin 48

40

V: 500 mV/div H: 10 μS/div

D

E

PDP-4280XA

56

F

67

7

8

1234

A

Flowchart of Failure Analysis for The Video System

=> DTV

DTV (Digital Terrestrial Video)
is not displayed.

Ye s

Is the function corresponding to
selected signal input selected?

B

Has the symptom been settled
when the Digital RF IN terminal
and RF cable are checked?

Is a PC card inserted in JA6201?

Ye s

Ye s

No

No

Select the DTV input with the
TV/DTV selector.

No

Poor contact of the terminal part
or input cable is defective.

Ye s

Pull out a PC card.

Is the DTV video and audio signal
output to SCART output?

C

In the digital broadcasting input,
is TP6106 High?

Has the Bitstream output (digital
signal, 0 to 3.3 V) arrived at R6260
near the IC6206

EMMA is defective.

D

Replace the MAIN Assy.

E

No

Ye s

Ye s

Ye s

The failure in between EMMA
and the ASIC.

No

COFDM does not lock a broad­casting stream, Tuner or COFDM
is defective.

No

Replace the IC6205, IC6206 and IC6207.

Replace the MAIN Assy.

Replace the MAIN Assy.

F

68

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PDP-4280XA

5678

5.2.7 AUDIO SYSTEM

Flowchart of Failure Analysis for The Audio System

=> AU1

A

Has the sound been emitted from
the speakers?

Ye s

No

Is sound muting set?

No

Is the volume set to 0?

No

Is not headphone inserted?

Ye s

Sound of all functions does not
output?

Ye s

Check the speakers and speaker
cables. Is it no problem?

Ye s

Is a voltage (+16.5 V) supplied to
IC9201?

Ye s

Is not a signal output from
CN9251? (pins 2, 4, 5, 7)

Ye s

Is not a PWM signal output from
IC9201?
(pins 34, 38, 44, 52)

Ye s

42 43

44 45

Ye s

Cancel muting, then check again.

Ye s

Raise the volume, then check again.

No

Pull out headphone, then check
again.

No

Go to .

A

No

Replace the speakers or speaker
cables.

No

Check the cables (CN8806) from the main power and peripheral circuit.
Repair the failure points.

No

Check the CN9251 and peripheral circuit.
Repair the failure points.

No

Check between the LPF (L9255, L9256) and CN9251.
Repair the failure points.

B

C

Has the sound been emitted from
the Audio out terminal?

Ye s

Is not a PWM signal output from
IC9101?
(pins 52, 53, 54, 55)

Ye s

Is a signal input to IC9101?
(pins 24, 25)

Ye s

Has I2C communication signal
arrived at IC9101?

No

Is a 12 V output from +12V_Reg
output of IC9181 normal?

Ye s

Are signals input to IC9151 and
IC9152?
(pins 2, 3, 5, 6)

Ye s

Are signals output from IC9151
and IC9152?
(pins 1, 7)

46 47

48

49 50

51

No

Check around the IC9101 and clock output of X9101.
Repair the failure points.

No

Check between the input terminals and IC9101.
Repair the failure points.

Check the peripheral circuits and the communication with the

No

microcomputer. If there was no ploblem replace the MSP5651M.

Check the IC9181 and peripheral circuit.
Repair the failure points.

Check the peripheral circuits and the communication with the
microcomputer. If there was no ploblem replace the MSP5651M.

Check the IC9151, IC9152 and peripheral circuit.
Repair the failure points.

D

E

B

PDP-4280XA

56

F

69

7

8

1234

A

B

Has the sound been emitted from
the Headphones?

B

C

Waveforms

Input signal: L/R 1 kHz, 0.5 Vrms (VOL 30)

CN9251 - pins 2, 4

42 43

V: 2 V/div H: 1 mS/div

No

Is sound muting set?

No

Is the volume set to 0?

No

Is a signal output from IC9101?
(pins 38, 39)

Ye s

Is a signal output from IC8871?
(pins 1, 7)

Ye s

Check the cables between CN8802
and CN9352 or check around the
Headphones jack.

CN9251 - pins 5, 7

V: 2 V/div H: 1 mS/div

52

53

IC9201 - pins 34, 38

44

V: 10 V/div H: 5 μS/div

Ye s

Cancel muting, then check again.

Ye s

Raise the volume, then check again.

No

Check around the IC9101

Check the communications around the IC8871 and between the IC8871

No

and r

epair the failure points

.

and the microcomputer. If there was no ploblem, replace BH3544F.

NG

Replace the cables or SIDE IO Assy.

IC9201 - pins 44, 52

45

V: 10 V/div H: 5 μS/div

IC9101 - pins 52, 53

46

V: 2 V/div H: 5 μS/div

D

IC9101 - pins 54, 55

47 48

V: 2 V/div H: 5 μS/div

E

F

IC9101 - pins 38, 39

52 53

V: 1 V/div H: 1 mS/div

IC9101 - pins 24, 25

V: 2 V/div H: 1 mS/div

IC8871 - pins 1, 7

V: 1 V/div H: 1 mS/div

IC9151 - pins 2, 3

49

V: 2 V/div H: 1 mS/div

IC9151 - pins 5, 6

50

V: 2 V/div H: 1 mS/div

IC9151 - pin 1, etc.

51

V: 2 V/div H: 1 mS/div

70

PDP-4280XA

1 234

5678

A

A

Has the sound of the Analog
broadcasting output?

Ye s

Has the sound of the HDMI
output?

Ye s

Has the sound of the Digital
broadcasting output?

Ye s

Is a SIF signal input to IC9101?

No

(pin 68)

Ye s

Check the communications around the IC9101 and between the IC9101
and the microcomputer. If there was no ploblem, replace MSP5651M.

Is a SPDIF signal output from

No

IC5201? (pin 78)

Ye s

Is a SPDIF signal input to
IC9101? (pin 4)

Ye s

Check that the HDMI switch of the
MENU is properly set.

Check the FFC and cables between

No

the MAIN Assy and TANSHI Assy.
Does not sound output even if replace
them?

No

Is a I2S signal input to IC9101?
(pins 106 to 108)

Ye s Yes

Check the communications around the
IC9101 and between the IC9101 and
the microcomputer. If there was no
ploblem replace the MAIN Assy.

55

54

54

5756

Check the communications between

No

the U6001 and the microcomputer
and between the U6001 and IC9101.

No

Replace the IC5201.

Poor contact of the connector or FFC, or cable is defective.

No

Replace FFC or cable.

NG

Check the communications around the IC9101 and between the IC9101
and the microcomputer. If there was no ploblem, replace MSP5651M.

Poor contact of the connector or

Ye s

FFC, or cable is defective.
Replace FFC or cable.

No

Is a signal output from IC8401 of
the MAIN Assy?

Check around IC8401
the failure points

NG

Replace the U6001

epair the failure points

r

No

Repare the DTB block.

and r

.

epair

and

.

B

C

Has the sound of the SCART,
component and PC inputs output?

Ye s

Has the sound of the side input
output?

Waveforms

Input signal: L/R 1 kHz, 0.5 Vrms (VOL 30)

IC5201 - pin 78

54

V: 1 V/div H: 1 μS/div

Is a signal input to IC9101?

No

(pins 24 to 27, 31, 32,
34 to 37)

Ye s

Check the communications around the IC9201 and between the IC9201
and the microcomputer. If there was no ploblem replace the MAIN Assy.

Check the cables between CN8801

No

and CN9351, and check around
the pin jack.

OK

Is a signal input to IC9101?
(pins 31, 32)

Ye s

Check the communications around the IC9101 and between the IC9101
and the microcomputer. If there was no ploblem replace the MAIN Assy.

IC9101 - pin 106

55 56 57

V: 1 V/div H: 10 μS/div

IC9101 - pin 107

V: 1 V/div H: 10 μS/div

No

Check between input terminal and
IC9101

and r

5049

NG

Replace the cables.

Check between IC9101 and

No

5049

CN8801

epair the failure points

and r

epair the failure points

.

.

IC9101 - pin 108

V: 1 V/div H: 10 μS/div

D

E

F

PDP-4280XA

56

71

7

8

1234

S

S

5.3 DIAGNOSIS OF PD (POWER-DOWN)

5.3.1 BLOCK DIAGRAM OF THE POWER-DOWN SIGNAL

A

Block Diagram of the Power-Down Signal

Relay

Control

B

DRF_SW

Protection

Circuit

Note:

The figures  to  indicate the number of

times the LED flashes when power-down

occurs in the corresponding route.

POWER SUPPLY UNIT

D21

EXT_PD

C

DRF_SW

PS_PD

PD_TRG_B

DIGITAL ASSY

PD

MUTE

D3162

D3155,

Circuit

PD_MUTE_B

OR

IC3151

Module Microcomputer

IC3155

to

D3151

D

ADR_PD

AD1AD1

OR

XDRV_PD

D19

XSUS_PD

XDD_PD

X1

SCN5V_PD

SCAN_PD

D20

YDRV_PD

YSUS_PD

YDD_PD

Y1Y1

D3501toD3502

E

D15 to D18

S

F

72

1 234

ADDRESS ASSY

X DRIVE ASSY

Y DRIVE ASSY

PDP-4280XA

5678

5.3.2 PD (POWER-DOWN) DIAGNOSIS OF FAILURE ANALYSIS

Prediction of failure symptoms when a PD (power-down) is generated

Red LED
Flashing

Count

2

3

4

5

6

7

8

9

10

11

Operating

POWER

SCN-5V

Y-DCDC

Y-DCDC Y DRIVE Assy

XDRIVE

X-DCDC X DRIVE Assy

Defective Assy PD Outline Checkpoint Possible Defective Part Remarks

PD

POWER SUPPLY Unit

X DRIVE Assy

Y DRIVE Assy Y SUS BLOCK

SCAN Assy

X DRIVE Assy

SCAN

Y DRIVE Assy

DIGITAL Assy CN3506

SCAN Assy

Y DRIVE Assy

Y DRIVE Assy

DIGITAL Assy

Y-SUS Y DRIVE Assy

ADDRESS Assy

ADRS

DIGITAL Assy CN3501 to CN3504
X DRIVE Assy CN1202,CN1203
Y DRIVE Assy CN2302,CN2303,CN2304

X DRIVE Assy

DIGITAL Assy CN3505

X-SUS X DRIVE Assy

Failure in the POWER SUPPLY Unit

X SUS BLOCK

VSUS UVP

SCAN IC SCAN IC

X SUS BLOCK

VH UVP

Connectors
disconnection
detection

IC5V UVP

Connectors
disconnection detection

Connectors
disconnection detection

VNOFS UVP

Vprst UVP

15VDD UVP

VKOFS1_2 UVP

VKOFS3 UVP

VKOFS4 UVP

Center electric potential
detection PD

Connectors
disconnection
detection

Connectors
disconnection
detection

Connectors
disconnection detection

15VDD UVP

VXKOFS1 UVP

VXKOFS2 UVP

Center electric potential
detection PD

Y SUS BLOCK

VH DC/DC converter

CN2001,CN2301

SCAN IC
IC5V DC/DC

CN2501,CN2502 Q2554,D2558

CN2001

CN3506

Y MSK BLOCK LMSK is short-circuited.

VNOFS DC/DC D2606,Q2710,Q2711

YPRST Regulator D2602,Q2604,R2610

15VDC/DC Q2572

Y MSK BLOCK LMSK is short-circuited.

VKOFS1_2 Regulator Q2705,Q2702

Y MSK BLOCK LMSK is short-circuited.

VKOFS3 Regulator Q2706,Q2703

Y MSK BLOCK LMSK is short-circuited.

VKOFS4 Regulator Q2707,Q2704

Y RESONANCE BLOCK

ADDRESS RESONACE BLOCKVadr LVP

CN1501,CN1502

CN1001

CN1201

X SUS BLOCK L1201,R1217

15VDC/DC Q1402

VXKOFS1 Regulator Q1403,Q1404,IC1401

X OFFSET BLOCK Q1301,Q1303

VXKOFS2 Regulator Q1405,Q1406,IC1402

X OFFSET BLOCK Q1302,Q1304

X RESONANCE BLOCK

Q1219,Q1220,Q1221,
Q1222,Q1223,Q1224,Q1201

Q2217,Q2218,Q2219,
Q2221,Q2222,Q2223

Q1219,Q1220,Q1221,
Q1222,Q1223,Q1224,Q1201

Q2217,Q2218,Q2219,
Q2221,Q2222,Q2223

IC2601,D2604

Q2320,Q2321,Q2322,Q2323,
Q2324,Q2325,Q2330,Q2332,
Q2334

Q2320,Q2321,Q2322,Q2323,
Q2324,Q2325,Q2330,Q2332,
Q2334

Q2320,Q2321,Q2322,Q2323,
Q2324,Q2325,Q2330,Q2332,
Q2334

Q2320,Q2321,Q2322,Q2323,
Q2324,Q2325,Q2330,Q2332,
Q2334

Q2106,Q2107,Q2108,Q2110,Q2112,
D2104,D2105,D2108,D2109

IC1551,IC1552,IC1553,IC1554

Q1631,Q1641,Q1651,Q1661,
(D1631,D1641,D1651,D1661,R1614,
R1615,R1616,R1617)

C1611,(R1614,R1615,R1616,R1617,
R1635,R1645,R1965,R1665,D1631,
D1641,D1651,D1661,Q1610)

Q1108,Q1109,Q1110,Q1112,
D1106,D1107,D1110,D1111

UVP: Under Voltage Protect , OVP: Over Voltage Protect

VSUS-PSUS and SUSOUT-SUSGND
are short-circuited.

VSUS-SUSOUT and SUSOUT-SUSGND
are short-circuited.

VSUS-PSUS and SUSOUT-SUSGND
are short-circuited.

VSUS-SUSOUT and SUSOUT-SUSGND
are short-circuited.

Vadr is short-circuited (TCP,etc.).
Each TCP unit.

Between ADR_B and Vadr is short­circuited.
Each resonance block unit.

ADR_B capacitor is short-circuited.

A

B

C

D

E

F

PDP-4280XA

56

73

7

8

1234

How to distinguish which connector is disconnected

A

X DRIVE Assy

Y DRIVE Assy

B

SCAN A, B Assy

Assy

Connector

CN1001 DIGITAL Assy 5 (XDRIVE)
CN1201 POWER SUPPLY Unit (drive system power)
CN1202 POWER SUPPLY Unit (ADR system power) 8 (ADRS)
CN1203
CN2001 DIGITAL Assy 3 (SCAN)
CN2301 POWER SUPPLY Unit (drive system power) 3 (SCAN)
CN2302 POWER SUPPLY Unit (ADR system power)
CN2303,

CN2304
CN2501,

CN2502
CN2801,

CN2901

To which Assy the Connector

is Connected

ADDRESS Assy

ADDRESS Assy

SCAN A, B Assy

Y DRIVE Assy 4 (SCN-5V)

LED Flashing Count

11 (X-SUS)

8 (ADRS)

8 (ADR)
8 (ADR)

4 (SCN-5V)

Screen Display

ADDRESS Assy

C

D

CN1501

CN1502

DIGITAL Assy 8 (ADRS)

X DRIVE Assy,
Y DRIVE Assy

8 (ADRS)

E

F

74

1 234

PDP-4280XA

5678

X Drive PD system

Resonance center
electric potential

X_CN

15VDD

VXKOFS1

VXKOFS2

Y Drive PD system

Resonance center
electric potential

Increase or decrease

voltage detection

Decrease voltage

detection

Decrease voltage

detection

Decrease voltage

detection

Increase or decrease

voltage detection

XSUS_PD

XDRV_PD

XDD_PD

YSUS_PD

A

B

C

IC5V

SCAN Hi
Unconnect

SCAN Low
Unconnect

Y_CN

15VDD

VNOFS

VKOFS1_2

VKOFS3

VKOFS4

VPRST

Increase or decrease

DCDC converter

drive stop

Decrease voltage

detection

Decrease voltage

detection

Decrease voltage

detection

voltage detection

SCN5V_PD

YDRV_PD

YDD_PD

D

E

VH

Increase or decrease

voltage detection

PDP-4280XA

56

SCAN_PD

F

75

7

8

1234

5.4 DIAGNOSIS OF SD (SHUTDOWN)

5.4.1 BLOCK DIAGRAM OF THE SHUTDOWN SIGNAL

A

Block Diagram of the Shutdown Signal

IC3160

STOP_SQ

MULTI

MONO

SQ_NON

1

FU3601

12V_FUSE

IC3602

3.3V_DDCON

IC3302

3.3V_RST_IC

RST2

AND

IC3303

3

DAC1

IC3157

DAC2

IC3158

IC3156

EEPROM

2

IC3401

TXD_SQ

RXD_SQ

CLK_SQ

SQ_ASIC

1

CE_SQ

BUSY_SQ

7

ARIA

IC8001

IC3151

SCL

SDA

D24

2

1

TE1

IC3652

EEPROM

MODULE_ucom

E_SDA

4

EMG_USB

13

TEMP

IC8406

AND-Gate

IC4403

3chDC-DC

IC8406

AND-Gate

EMG_DDC

13

IC3651

SENSOR

SENSOR ASSY

V+5_1V

V+6_5V

V+12V

USB

Power

E_SCL

OVP

Block

V+3_3V_D4

1

PSIZE

1

D11

MODEL

M1

6

B

DIGITAL ASSY

C

RST2

TXD_IC3

RXD_IC3

REQ_IC3

D

IC8401

TXD_MD

RXD_MD

REQ_MD

RST4

EMMA2_ucom

SCL_MA

SDA_MA

8

IC8404

EEPROM

15

E

IC4801

VDEC

8

SW

2 => 1

SCL_TU

SDA_TU

8

IC5201

HDMI_RX

SCL_MB

SDA_MB

F

Note : The figures  to  indicate the number of times the

LED flashes when shut-down occurs in the corresponding

route.

I2C

UART

3-wire serial

Abnormal notice line

MAIN ASSY

Monitor line

Others

BLOCK

DC_DET.

ADC

IC5001

IC6101

COFDM

U6001

AD-FE

IC4701

RGB SW

AV SW

IC4601

SCL_AV

SDA_AV

Converter

5V ⇔ 3.3V

8

12

8

M8

SCL_AV5

SDA_AV5

IO3

TANSHI ASSY

MSP

IC9101

5

A_NG_B

5

IC9201

D-Amp

TXD_IF

RXD_IF

CLK_IF

BUSY_IF

CE_IF

97

IC8301

IF_ucom

ANT_POW_DE

OTW

REQ_IF

M6

IO4

TEMP2

11

TH9091

Temp. sensor

FAN NG

10

M4

FAN

76

PDP-4280XA

1 234

5678

5.4.2 SD (SHUTDOWN) DIAGNOSIS

Remarks

SQ_IC communication not established. IC3401 may not have properly started up.

A shutdown occurs if IC3401 has not properly started up (a communication failure between IC3401 and IC3306 [FLASH]).

Part

A shutdown occurs if the SEQ-PROG that has been stored in backup

memory does not coincide with the actual SEQ-PROG.

Check the pull-up resistor of the IIC control line and the power to the corresponding IC.

Check the pull-up resistor of the IIC control line and the power to the corresponding IC.

Check the pull-up resistor of the IIC control line and the power to the corresponding IC.

Check the pull-up resistor of the IIC control line and the power to the corresponding IC.

If RST2 does not become high after the unit is turned on, a shutdown will be generated in several seconds.

Check if V + 12 V is started. Also check if the FU3601 on the DIGITAL Assy has been melted.

If TEMP1 that is read by the module microcomputer is 75°C or higher, a shutdown will be generated.

A shutdown occurs if the reading of TEMP1 detected by the module microcomputer is

–20°C or less. Also check the connection with the SENSOR Assy.

Check if any speaker cable is in contact with the chassis.

Check if cables are firmly connected.

Check the communication lines (TXD_IF/RXD_IF/CLK_IF/BUSY_IF/CE_IF/REQ_IF).

Check the communication lines (TXD_MOD/RXD_MOD/REQ_MOD).

Check the communication lines (TXD_IC3/RXD_IC3).

Check the communication lines (TXD_IF/RXD_IF/CLK_IF/BUSY_IF/CE_IF/REQ_IF).

Check if cables are firmly connected.

A

B

Check the communication lines (SCL_EP/SDA_EP).

CN3001, IC3001,IC3401

IC3401, IC3151

Possible Defective

Checkpoint

Check if the video sync signal is input to IC3401.

SQNO

RTRY CLK_SQ/TXD_SQ, etc.

MAIN SUB

Log Indication in Factory Mode

IC3401, IC3151 If BUSY_SQ remains high, a shutdown is generated.

BUSY_SQ

BUSY

VER-HS

SQ-LSI

IC3306, IC3151 The written SEQ-PROG is incoherent with data on the DIGITAL Assy.

Check the model number of the DIGITAL Assy and the destination of SEQ-PROS.

IC3157, IC3151

IC3652, IC3151

IC3306, IC3151

Check the model number of the DIGITAL Assy and the

destination of SEQ-PROS.

IIC communication line of IC3157

IIC communication line of IC3652

VER-MS

EEPROM IIC communication line of IC3156 IC3156, IC3151

MD-IIC

IC3158, IC3151

POWER SUPPLY Unit,FU3601

SENSOR Assy (IC3651)

SENSOR Assy (IC3651)

CN9251

IIC communication line of IC3158

The 12 V power is not output.

High temperature abnormality in the panel temperature sensor

Low temperature abnormality in the panel temperature sensor

Is the output voltage of the DC-DC converter low? IC3602(BD9302FP)

– RST2 –

TMP-H

TMP-L

TMP-NG

–

Speaker terminals

CN8803,CN4001,CN8806,P5

Periphery of the cable between IO3 and M8, and IO6 and P5

Communication line between MAIN and MOD IC3151, IC8401

AUDIO_AMP IC9201, IC9101 Check if the AMP output is short-circuited.

– AUDIO –

IC8001, IC8401

IC8301, IC8401

Communication line between MULTI and MAIN

Periphery of the cable between D11 and M1 CN3001, CN4101 Check if cables are firmly connected.

Communication line between IF and MAIN

MULTI

IF

MA-3L

– MODULE –

FE1 IIC communication line between Tuner and MAIN U6001,IC8401,IC6101 Check the communication lines (SCL_TU/SDA_TU or SCL_AV5/SDA_AV5).

MA-IIC

IC8301, IC8401

–

CN9551 to CN9555,CN4103,CN4108

Dirt attached to the fan motor – Check the fan(AXM1057).

Periphery of the FAN CONNECT AWW1290, AWW1329 FAN NG

Periphery of the cable between FA1 and M5, FAN and M4, and FA2 and FA5

Communication line between IF and MAIN

FAN1

MAIN –

FAN

Periphery of the fan control regulator IC4310, IC4303 –

Temperature sensor or its periphery – TEMP2 A shutdown occurs because of high temperature.

Periphery of the temperature sensor TH9091 TEMP2

TEMP2 –

–

– IC8401 Check if DTV antenna is short-circuited.

–– –

DC-DC converter or its periphery, RST2 IC4403, Q4404 Check if V + 3.3 V_D4 is started.

EMG_USB IC4309 Check if the voltage at a waveform check point is 5 V.

The 12 V power is not output, RST4 POWER SUPPLY Unit Check if V + 12 V is started.

The 6.5 V power is not output POWER SUPPLY Unit Check if V + 6.5 V is started.

The 5.1 V power is not output POWER SUPPLY Unit Check if V + 5.1 V is started.

EMG_DDC DCDC converter Check if the DCDC converter is overloaded.

Periphery of the cable between IO4 and M6 CN8804, CN4004 Check if cables are firmly connected.

M-DCDC

PS/RST

D-ANT

DTUNER

RST-MA

Periphery of the cable between P8 and M3 CN4105 Check if cables are firmly connected.

IC8404, IC8401

IIC communication line between EEPROM and MAIN

–

MA-EEP

C

D

E

Communication error

Major Type Detailed Type

Frequency of

LED Flashing

Drive stop

Busy

Incoherent version (hardware, software)

Incoherent version (memory,

software)

DIGITAL Assy EEPROM

SENSOR Assy EEPROM BACKUP

DAC1 DAC1

Abnormality in the

Sequence LSI

Blue 1

DAC2 DAC2

Failure in IIC

communication with the

module microcomputer

Abnormality in RST2

Blue 2

Blue 3

power decrease

Abnormality in panel

temperature

Blue 4

Failure in communication with

Short-circuiting of the

speakers / D-AMP

temperature abnormality

Blue 5

MULTI processor

Tuner 1

MSP/MAP MSPMAP IIC communication line between MSP/MAP and MAIN IC9101, IC8401 Check the communication lines (SCL_AV/SDA_AV).

IF microcomputer

the module microcomputer

Failure in main

microcomputer 3-wire

Blue 6

Blue 7

AV switch AV-SW IIC communication line between AV-SW and MAIN IC4601, IC8401 Check the communication lines (SCL_AV5/SDA_AV5).

serial communication

RGB switch RGB-SW IIC communication line between RGB-SW and MAIN IC4701, IC8401 Check the communication lines (SCL_AV5/SDA_AV5).

VDEC VDEC IIC communication line between M-VDEC and MAIN IC4801, IC8401 Check the communication lines (SCL_MB/SDA_MB).

VDEC SDRAM SDRAM IIC communication line between VDEC and SDRAM IC4801, IC4802 Check the communication lines (SDRAM). Defective SDRAM

AD/PLL ADC IIC communication line between ADC and MAIN IC5001, IC8401 Check the communication lines (SCL_AV/SDA_AV).

Failure in IIC

communication with the

main microcomputer

Blue 8

HDMI HDMI IIC communication line between HDMI_RX and MAIN IC5201, IC8401 Check the communication lines (SCL_MB/SDA_MB).

PDP-4280XA

56

COFDEM DEMOD IIC communication line between COFDM and MAIN IC6101, IC8401 Check the communication lines (SCL_AV/SDA_AV).

FAN1

Failure in communication

with the main microcomputer

Blue 9

Blue 10 FAN NG

7

DTV startup error

High temperature of the

unit

Blue 11

DC-DC Converter power decrease

DTV ANTENNA

Digital Tuner

Blue 12

Failure in the power

supply

Blue 13

POWER SUPPLY RELAY

Main EEPROM communication error

Main EEPROM

Blue 15

F

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5.5 NON-FAILURE INFORMATION

5.5.1 INFORMATION ON SYMPTOMS THAT DO NOT CONSTITUTE FAILURE

Information on symptoms that do not constitute failure

A

HDMI: Symptoms concerning the input format and settings

The picture color for an INPUT 1 or 3 or 4 signal is not
correct.

The video signal to INPUT 1 or 3 or 4 is not displayed, and a
message is displayed.

The audio signal input to the INPUT 1 or 3 is not output.
No HDMI signal is input.

No sound of signals to INPUT 1 or 3 or 4 is output.

B

The 1080p input signal is not displayed properly or at all,
although the 1080i input signal is displayed properly.

SCART video output

The video output signal from the SCART connector is
deteriorated. Or when the video output signal from the SCART
connector is recorded, its playback picture is deteriorated.

The video signal is not output when the component signal is
input to INPUT 2.

The video signal is not output when the video signal is input
to INPUT 1 or 3 or 4.

C

AUDIO OUT and SCART

The image displayed on the PDP is not synchronized with the
sound from the SCART.

DIGITAL OUT

Playback of the signal from the DIGITAL audio output
connector is possible, but recording is not possible.

The digital audio output signal from the DIGITAL connector is
not synchronized with that from the SCART video output.

Miscellaneous

The no-signal off function is not activated.

D

The no-operation off function is not activated.

Power management does not function.

The AUTO SETUP function is not activated.

The audio signal from the PC is not output. Wrong connection of the cable to the SR connector is suspected.

Control via the SR connector is not possible. Wrong connection of the cable to the PC INPUT (AUDIO) connector is suspected.

The picture-quality setting (AV Selection) is not stored.

The picture size changes arbitrary. The Auto Size setting is set to ON.

The display position of the screen changes slightly while the

E

screen is on.

The video signal to the S video connector is not displayed.

The video signal to the composite video connector is not
displayed.

SUPPLEMENT: On the video setting for HDMI

There are three types of HDMI output formats: color difference 4:4:4, color difference 4:2:2, and RGB4:4:4.
(The proportions, such as 4:4:4 and 4:2:2, represent those of the amount of data for video signal components. For example, as for color difference 4:4:4, the
proportion of the amount of data as for Y, Cb, and Cr is 4:4:4.)

It is required to make the settings of the PDP according to the settings of the output equipment. For usual operation, however, set them to AUTO. If the color is
inappropriate, make the settings manually.

F

In the HDMI system, video signals are coded at 24 bits per pixel and transmitted as a series of 24-bit pixels. In a case of color difference 4:4:4, Y, Cb, and Cr use 8
bits each. In a case of color difference 4:2:2, Y, Cb, and Cr use 12 bits each, but Cb and Cr are transmitted at a half sampling rate of Y. This unit is capable of
processing the upper 10 bits out of 12 bits of video data. Recent high-end DVD players, such as Pioneer DV-79AVi, are capable of outputting 10-bit color-difference
signals. In general, it is said that picture quality for color difference 4:2:2 format is assumed to be higher, because human eyes are more sensitive to luminance
than to colors. In the case of RGB4:4:4, R, G, and B use 8 bits each.

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Symptom Cause, item to check, information

The color setting for INPUT 1 or 3 or 4 is not compatible with that of the output equipment.
Check whether the color setting is YPbPr or RGB.

A unsupported video signal is input.

The audio setting for INPUT 1 or 3 is "AUTO," and a video signal is not input. If the audio setting
is "AUTO," to output an analog audio signal, the HDMI signal must be input. (If a DVI device is to
be connected, use a DVI-HDMI conversion cable.) If the HDMI video signal is not input, the
analog audio signal is not output.
When the DVI equipment is connected, the analog signals are selected with the setting "AUTO."

The setting on the side of the HDMI output equipment is wrong.
Example: Dolby Digital

Check that the connected cable supports HDMI Category 2. (As the clock frequency for the 1080p
signal is triple that for the 1080i signal, signal degradation caused by a cable must not be
neglected. A cable supporting HDMI Category 2 can be used for the 1080p signal. Although some
conventional cables can support the 1080p signal, some others cannot.)

The video signal output from the SCART connector is Macrovision protected.

The video signal is not output from the SCART connector when the component signal is selected.

The video signal is not output from the SCART connector when the HDMI signal is selected.

The audio signal from the SCART connector is synchronized with the video output signal from the SCART connector.
And the audio signal from the AUDIO OUT is synchronized with the video signal that is currently displayed.

The video signal output from the DIGITAL connector is copy-protected.

The digital audio output signal from the DIGITAL connector is synchronized with the video signal
that is currently displayed, and not with the SCART video output.

The no-signal off and no-operation off functions are effective only if video (composite, S video,
component, HDMI [excluding PC]) input or TV input is selected.

Power Management is effective only while an analog PC signal is being input. It is not effective
with HDMI-PC signal input.

The Auto Setup function is effective only while an analog PC signal is being input. This function
does not work if an analog PC signal is not input, even if the INPUT PC is selected.

The picture-quality setting is stored for each input. As the setting is changed when another input
is selected, the user may have a false idea that the setting is not stored.

The orbiter function for minimizing the effects of phosphor burn is activated. Although the setting
for this function can be changed on the Home menu, retaining the factory setting is strongly
recommended.

As the signal input to the connector that has been selected on the INPUT SELECT submenu of
the Home menu is selected (this does not apply to the connectors located on the side of the unit),
check the menu setting. If the output signal is not available even if the input signal is properly
selected, input a signal to other input functions, check the connecting cables, or check the
settings for the connected equipment.

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5.5.1.1 CONFIRMATION ON THE HDMI CONTROL FUNCTION

When you use the HDMI Control (HDMI-CEC) function, if the unit does not function properly, such as not being able to control
or recognize connected equipment, check the following:

" Confirmation of the manufacturer of the connected equipment

Check if the connected equipment was manufactured by Pioneer and if it supports the HDMI Control function.
If its manufacturer is not Pioneer, proper operations are not guaranteed.

" Confirmation of connections

Check if the unit is connected properly, as shown in the figures below:
(For details, refer to "Making the HDMI Control connections" in the Operating instructions.)

" PDP-4280XD and PDP-428XD

Rear view

Optical digital cable

Stereo
audio cable

AV amp

HDMI compliant cable
(HDMI cable having the
HDMI mark)

HDMI compliant cable
(HDMI cable having the
HDMI mark)

Rear view

Optical digital
cable

Stereo
audio cable

HDMI compliant cable
(HDMI cable having the
HDMI mark)

DVD recorderAV amp

Rear view

DVD recorder

HDMI compliant cable
(HDMI cable having the
HDMI mark)

A

B

C

DVD recorder

BD player

Example 1: When an AV amplifier that supports
HDMI Control is connected

" PDP-4280XA

Rear view

Stereo
audio cable

HDMI compliant cable
(HDMI cable having the

AV amp

HDMI compliant cable
(HDMI cable having the
HDMI mark)

DVD recorder

Example 1: When an AV amplifier that supports
HDMI Control is connected

HDMI mark)

BD player

Example 2: When an AV amplifier that does
not support HDMI Control is connected

Rear view

Stereo
audio cable

HDMI compliant cable
(HDMI cable having the
HDMI mark)

DVD recorderAV amp

Example 2: When an AV amplifier that does
not support HDMI Control is connected

Example 3: When an AV amplifier
is not connected

Rear view

HDMI compliant cable
(HDMI cable having the
HDMI mark)

DVD recorder

Example 3: When an AV amplifier
is not connected

D

E

F

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Check that the following conditions are met:

A

• The connected equipment must support the HDMI
Control function.

• The equipment must be connected to the INPUT
connector that has been selected in "Input Setting" on
the HDMI Control Setting menu.

• The connections must be made properly, as shown in the
above figures (in a case where an AV device, such as an
AV amplifier, and a DVD recorder/BD player are
connected, in a case where only a DVD recorder/BD
player is connected, and in a case where an AV device,
such as an AV amplifier, which does not support
HDMI-CEC, is connected).

B

• When an AV device that supports the HDMI Control
function is connected, it must be connected between the
PDP and a DVD recorder/BD player.

• An AV device, such as an AV amplifier, and the HD AV
Converter must not be connected simultaneously.

• The HDMI Control function must be activated on the
connected equipment (DVD recorder, BD player, AV
device [AV amplifier, etc.], or the HD AV Converter).
(Refer to the instruction manual of the connected
equipment.)

C

If the HD AV Converter is connected, check if it is connected
properly, as shown in the figure below.
(For details, refer to "Selecting the HD AV Converter" and
"HD AV Converter mode" in the Operating instructions.)

Rear view

D

Connect to INPUT 4

 Confirmation of the number of connected devices

Check that the number of connected devices does not
exceed the maximum number for guaranteed operations.

Equipment

DVD recorder 2

BD player 2

AV System

HD AV Converter

(∗1) Operation with either an AV device (AV amplifier, etc.) or the
HD AV Converter is guaranteed. If both are connected, their
operations are not guaranteed.

Maximum

Number

1 (∗1)

1 (∗1)

 Confirmation of settings

Check that the settings for the HDMI Control function are
properly made. (For details, refer to "Setting the HDMI
Control" in the Operating instructions.)

Check that the following conditions are met:

• "Input Setting" on the HDMI Control Setting menu must
be set to the same input as that to which the equipment
that supports the HDMI Control function is connected.

• When the HD AV Converter is connected, "HD AV
Converter" on the HDMI Control Setting menu must be
set to Enable.

• When Power Off Control, Power-On Ready, or Hold
Sound Status are to be used, their settings must be On.

• When the HD AV Converter is connected, the HDMI
Control switch on the rear panel of the HD AV Converter
must be set to ON. The HDMI Control indicator on the
front panel of the HD AV Converter will light in green
when HDMI Control is enabled. (The HDMI Control
indicator's lighting in green means HDMI Control is
possible.)

BD player

HDMI compliant cable
(HDMI cable having the
HDMI mark)

HD AV

Converter

HDMI compliant cable
(HDMI cable having the
HDMI mark)

E

DVD recorder

Check that the following conditions are met:

• The HD AV Converter must be connected to the INPUT 4
connector of the PDP.

• The HD AV Converter must be connected between the
PDP and a DVD recorder/BD player, as shown in the
figure above.

• The AV device, such as an AV amplifier, and the HD AV
Converter are not connected simultaneously.

• The HDMI Control function must be activated on the HD
AV Converter. (For details, refer to the instruction manual

F

of the HD AV Converter.)

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" Confirmation of operations

Check that the HDMI Control function works properly.
(1) Connect a device that supports the HDMI Control
function.
(2) Perform the procedures that are required after changing
connections, which are described in "Making the HDMI
Control connections" in the Operating instructions.
1 Turn on the plasma television and all the connected
devices.
2 Confirm that the setting in “Input Setting” for “HDMI
Control Setting” is properly entered according to the
connected devices. Also confirm the HDMI Control
related settings in the connected devices.
3 Switch to the HDMI input terminals to which the
devices are connected to check if audio and video
images are properly output and displayed.
4 Try turning off the plasma television, then turn the
power back on to the plasma television.

(3) Perform "Power On Test" or "Power Off Test" on the
HDMI Control Setting menu. (For details, refer to "Power
On/Off Test" in the Operating instructions.)

If the following occurs even if the operation check is
performed properly, a failure, such as breakage of the HDMI
cable, problems on the side of the connected device, and
problems with the MAIN Assy, may be suspected:

• "Power On Test" or "Power Off Test" cannot be selected
(the items are grayed)

• The connected device cannot be turned on/off.

A

B

C

In some cases, an operation check using another HDMI
input connector may be required in order to narrow down the
cause.

As for the HD AV Converter, because "Power On Test" /
"Power Off Test" is not available, follow the procedures
below:
(1) Connect the HD AV Converter to the INPUT 4 connector.
Set "HD AV Converter" on the HDMI Control Setting
menu to Enable. The HD AV Converter can support
HDMI Control only when it is connected to the INPUT 4
connector of the PDP.
(2) Perform the procedures that are required after changing
connections, which are described in "Making the HDMI
Control connections" in the Operating instructions.
(3) Turn the PDP off. If the PDP turns off properly, turn the
HD AV Converter off.

If the following occurs even if the operation check is
performed properly, a failure, such as breakage of the HDMI
cable, problems on the side of the HD AV Converter, and
problems with the MAIN Assy, may be suspected:

• The HD AV Converter cannot be turned off.

D

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5.5.2 FUNCTION OF DECREASING THE BRIGHTNESS LEVEL

A

High-temperature protection function 1

If the panel temperature (TEMP1) reaches 70 °C, the limit for the maximum count of plasma discharge will be gradually
decreased to lower the temperature of the panel.

• This function is activated based on the TEMP1 temperature.

• The limit for the maximum count of plasma discharge will be decreased 8 per 5 seconds.

• The lowest limit for the maximum count of plasma discharge is about 700.

• The maximum count of plasma discharge will begin to increase gradually if the panel temperature falls to the specified
temperature.

High-temperature protection function 2

If the panel temperature (TEMP1) reaches 65 °C, the plasma-discharge count that is determined based on the input APL will
be decreased. In actual operation, the ABL adjustment value will be offset.

B

• This function is activated based on the TEMP1 temperature.

• The ABL adjustment value will be decreased by one step per 30 seconds.

• The ABL adjustment value will begin to increase gradually if the panel temperature falls to the specified temperature.

Panel protection function 1 (protection against still picture)

If a still picture is displayed for 3 minutes or more, the limit for the maximum count of plasma discharge will be gradually
decreased to minimize the effects of phosphor burn.

• This function is activated after detection if the displayed picture is still (the picture will be considered to be still if only the
mouse cursor is moved).

• The limit for the maximum count of plasma discharge will be decreased 8 per 5 seconds.

• The lowest limit for the maximum count of plasma discharge is about 700 (it takes about 15 minutes to reach the lowest limit,
although the required time varies depending on the displayed picture).

C

• The maximum count of plasma discharge will begin to increase gradually if the displayed picture is changed to animated
picture.

Note: How to decrease the brightness level in this function is the same as in high-temperature protection function 1.

Panel protection function 2 (SCAN IC protection)

If a particular load is applied to the SCAN IC, the limit for the
maximum count of plasma discharge will be gradually decreased.
Note: How to decrease the brightness level in this function is the
same as in high-temperature protection function 1.

D

Panel protection function 3
(protection against panel cracking)

A bright window, as shown in the figure on the right, on the screen
increases the heat of the panel. If such a pattern is recognized on
the screen, the limit for the maximum count of plasma discharge
will be gradually decreased.
Note: How to decrease the brightness level in this function is the
same as in high-temperature protection function 1.

2000

E

700

High-temperature protection function 1/
panel protection functions 1, 2, and 3

High-temperature protection function 1/panel
protection: The limit for the maximum count
of plasma discharge will be gradually
decreased if the panel temperature reaches
70 °C.

High-temperature protection function 2

The count of plasma discharge with regard to the APL will be
decreased if the panel temperature becomes 65 °C or higher.

Detection example: SCAN IC protection

Detection example: Protection against panel cracking

F

Maximum count of plasma discharge

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5.6 OUTLINE OF THE OPERATION

5.6.1 PANEL DRIVE-POWER ON/OFF FUNCTION

Function:
It is an operational mode where the digital signal processing performs circuit operation but the power is not supplied to the
panel driving system (Vsus, VAddress) in order to avoid a power down (PD).

Application:

1. When it is necessary to check whether the signal output is correctly reaching the drive system in a repairing activity etc.

2. In the case of a PD, to determine whether the problem is with the panel drive-power supply or with the other system power
supply.

Method:

1. Short-circuit between the specified location of the POWER SUPPLY Unit and GND (Multi base section recommended),
using a jumper with alligator clips (refer to the photos below).

2. Execute [DRV S00] by RS-232C command. ([DRV S01] for release)

Supplemental explanation:

• When the

panel drive-power

• If the clip is removed in the OFF state of the panel drive-power, PD will take place at the instance of clip
removal. Therefore, be sure to remove the clip after turning the power OFF.

• Under RS-232C command control, [DRV S01] (release) is possible during power ON. However, there is a possibility of
damaging the set. Therefore, make this operation only after turning the power OFF.

• The [DRV S00/S01] commands are effective during Standby mode. However, if no operation is performed within about 10
seconds or more, the panel drive-power OFF state will be canceled.

• When the main power switch is set to OFF, no command is accepted.

• The panel drive-power OFF state established by the [DRVS00] command will be canceled by unplugging the AC power
cord, setting the main power switch to OFF, or by performing no operation for 10 seconds or more during Standby mode.

is in OFF state, there will be no PD, except PS_PD, as the PD signal has been muted.

A

B

C

When the panel drive-power is ON When the panel drive-power is OFF

POWER SUPPLY Unit

DRF-SW-B
(TEST PIN)

POWER SUPPLY Unit

DRF-SW-B
(TEST PIN)

Alligator clip

Multi base

GND

Multi base

D

E

F

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5.6.2 SPECIFICATION OF THE FAN CONTROL

A

Block diagram

The internal fan cools down the MTB and Power blocks.

Internal fan

DIGITAL Assy

IO Assy

TEMP2

Module_Ucom

B

If an emergency signal is
detected, it will be
transmitted.

Detection of

Main_Ucom

The Main microcomputer
controls the IF microcomputer
as a port expander.

C

IF_Ucom

TEMP2
FAN_NG1
FAN_ON1
FAN_CONT1

R

disconnection

FAN_I_REG

VOLTAGE

CONTROL

FAN_VCC1

0 to 12 V

MAIN Assy

D

Operation specifications

DAC output

HIGH

Shutdown caused
by high temperature

E

LOW

STOP

42XGA 34 ºC 37 ºC 39 ºC 42 ºC 62 ºC
50XGA 37 ºC 40 ºC 42 ºC 45 ºC 62 ºC

Notes:

• The operating temperature of the fan is higher than the ambient temperature, because the sensor temperature is read by
the microcomputer.

• If the critical values for signals are displayed in the address circuit, the fan may be activated or be rotated at higher speed

F

in response to values lower than the set temperature values shown above.

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5.6.3 PROCESSING IN ABNORMALITY

Protection of the Power Amplifier

Circuit configuration

A

TANSHI Assy

DIGITAL
POWER

AMP IC

MAIN Assy

PULL_D

PULL_D

OTWOTW

A_NG_BA_NG_B

IF_UCOM

MAIN_UCOM

Specifications for port monitoring

Port Name SD/PD Indication Active

A_NG_B AUDIO

OTW AUDIO

Shutdown occurs when the signal is "L."
30 mS ∗ 3 times

Shutdown occurs when the signal is "L."
130 mS ∗ 3 times

Monitoring conditions

RST4 = "H" (always)
(Monitoring starts 2 sec
after the above conditions
are established.)

Operation

The main CPU operations described below will be
performed when either "A_NG_B = L" or "OTW = L" is
detected (established) under the monitoring conditions.

Operation specifications of the main CPU

(1) When a shutdown decision is made by the main CPU

• After a warning indication is displayed for 5 sec, a shutdown is generated (the blue LED flashes 5 times).

• A warning indication is displayed for all input-signal types.

• Example of a warning indication: "The speaker terminals are short-circuited. After reconnection, turn the unit on again."
(For 50-inch models) (For 42-inch models, an indication declaring a forced power-off is displayed.)

(2) Display conditions
When the panel is on: A warning indication is displayed immediately.
When the panel is off: A warning indication is not displayed immediately but is displayed when the panel is turned on.

Note: A warning indication is displayed each time the panel is turned on if the conditions for a shutdown persist.

Conditions for resetting the circuits

The circuits will be reset upon Standby ON/OFF.

B

C

DTB Antenna power supply

Circuit configuration

MAIN Assy

ANT

ON/OFF

H: ON
L: OFF

Specifications for port monitoring

Port Name SD/PD Indication Active

ANT_POW_DET

DTB antenna
short-circuited

Overcurrent

Detection

Latch

Hold "L" at
the short-circuit.

Flashing of the LED starts
when the signal is L (100 mS,
3 times)

V+5.1V_STB

V+3.3V_STB

Inverter

ANT_POW_B

H: OFF
L: ON

ANT_POW_DET

Monitoring

Monitoring conditions

RST4 = H and
ANT_POW_B = L

IF_UCOM

48

47

MAIN_UCOM

Operation

If "ANT_POW_DET = L" is detected (established) under
the monitoring conditions, an SD log is created, and the
LED flashes for 60 sec. A shutdown process is not
performed in the power system.

D

E

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A

Power supply and DC-DC converter

Circuit configuration

POWER SUPPLY Unit

SW_REG

MAIN

POWER

B

C

SW

RELAY

MODULE_Ucom

DIGITAL ASSY

Specifications for port monitoring

Port Name SD/PD Indication Active

RST2 ASIC power

D

RST3 AC power

E

RST4 MAIN power

F

(M-DCDC)

(RELAY)

AC_DET

V+5.1V

V+12V

PULL_U

PULL_D

V+6.5V

PULL_U

PULL_D

Shutdown occurs when the
signal is "L."
for 5 sec after PSW1 is ON.
or
for 2 sec while the unit is
ON.

AC_OFF when the signal is
"H."

Shutdown occurs if the
signal is "L."
for 5 sec after RELAY is
ON.
or
for 2 sec while the unit is
ON or in Functional STB.

V+5.1V

PULL_U

PULL_D

MAIN Assy

V+3.3V_D

PULL_U

EMG_DDC

V+3.3V_UCOM

Inverter

DC/DC Converter

Monitoring conditions

• Panel ON (RST4 = H and
PSW1 = L)

• While awaiting restoration
of RST2 (RST2 = L)

• Active STB (including SD/PD
statuses)

• Functional STB

• Panel ON

• (Areas other than North America)
While the main power switch is
set to OFF (M_SW_DET_B = H)

• (North America) While the main
power switch is set to OFF
(M_SW_DET_B = H)

• While awaiting restoration of AC
power (RST3 = H)

• While awaiting restoration of
RST2 (RST2 = L)

• While awaiting restoration of
RST4 (RST4 = L)

• Functional STB

• Panel ON

• (Areas other than North America)
While the main power switch is
set to OFF (M_SW_DET_B = H)

• While awaiting restoration of
RST2 (RST2 = L)

• While awaiting restoration of
RST4 (RST4 = L)

AND

V+5V_USB

Overvoltage

Detection

EMG_

USB

AND

RST3

RST4

RST2

PSW1

Command

MAIN_UCOM

AC shutdown
detection

Voltage
detection

Startup
Main ucom

Voltage
detection

DC_DC Converter
output control

PON/POFF
Command

IF_UCOM

ACTIVE

Operation

The SD timer starts when "RST2 = L" is detected under
monitoring conditions. If "RST3 = H," "M_SW_DET_B = H," or
"RST4 = L" is detected, or if a power-down or shutdown in the
module microcomputer system is not generated, the unit waits
for 30 mS. Then, if the SD timer continues to count for 2 sec
or more, a shutdown is determined, and a shutdown process
starts. A specific LED flash pattern (blue LED, 13 times)
starts. The next PON operation is valid, and the flag is cleared
upon the next power-on.
If RST2 is H, a restoration process starts according to the
latest power-on/-off status.

If "RST3 = H" (AC_OFF) is detected under the
monitoring conditions, a power-off process starts.
Monitoring of the RST3 port is continued, while
monitoring of other ports is interrupted.
Communication is controlled only by the IF
microcomputer. The port outputs are set as specified.
If the signal at the RST3 port continues to be H after
30 mS of waiting, monitoring is continued.
If RST3 is L, a restoration process starts according to
the latest power-on/-off status.

The SD timer starts when "RST4 = L" (power-off of
devices in the functional STB system) is detected under
monitoring conditions.
The RST4 initialization process starts, and input
monitoring, communication setting, and output-terminal
setting are performed.
The RST4-SD timer starts. If either "RST3 = H" or
"M_SW_DET_B = H" is detected, or if a power-down or
shutdown in the module microcomputer system is not
generated, the unit waits for 30 mS. Then, if the SD
timer continues to count for 2 sec or more, a shutdown
is determined, and a shutdown process starts.
A specific LED flash pattern (blue LED, 13 times) starts.
The next PON operation is valid, and the flag is cleared
upon the next power-on.
If RST4 is H, a restoration process starts according to
the latest power-on/-off status.

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Fan and temperature sensor

Circuit configuration

TANSHI Assy

SENSOR

FAN

1

TEMP2

FAN_12V

MAIN Assy

Drive

Circuit

V+3_3V_UCOM

PULL_U

V+3_3V_UCOM

PULL_U

FAN_NG1 (H act)

TEMP2

FAN ON1

FAN CONT1

A

IF_UCOM

B

Specifications for port monitoring

Port Name SD/PD Indication Active

FAN_NG1 FAN1

TEMP2 High temperature at

MTB

TMP_NG

High temperature in
the drive circuits

Low temperature in
the drive circuits

Shutdown occurs when
the signal is "H."
1 S ∗ 3 times

Shutdown occurs if any
values equal to or
greater than minimum to
require a shutdown are
detected.
1 S ∗ 3 times

Shutdown occurs if any
values equal to or
greater than minimum to
require a shutdown are
detected.
200 mS ∗ 5 times
(average)

SENSOR Assy

SENSOR

RST4 = H and FAN_ON1 = H
(Monitoring starts 3 sec after the
above conditions are established.)

RST4 = H
(Monitoring starts 1 sec after the
above conditions are established.)

Digital video RST2 = H

DIGITAL Assy

TEMP1

MODULE_

PULL_D

Monitoring conditions

UCOM

MAIN_UCOM

Operation

If FAN_NG1 (for details on detection logic, see "File of
fan-control specifications") is detected (established) under the
monitoring conditions, a shutdown process starts. A specific
LED flash pattern (blue LED, 10 times) starts.
The next PON operation is valid, and the flag is cleared upon
the next power-on.

If any values equal to or greater than minimum to
require a shutdown are detected (established) under
the monitoring conditions, a warning indication will be
displayed for 30 sec, after which a shutdown process
starts. A specific LED flash pattern (blue LED, 11 times)
starts.
The next PON operation is valid, and the flag is cleared
upon the next power-on.

If any values equal to or greater than minimum to
require a shutdown is detected (established) under the
monitoring conditions, those changes in status will be
transmitted to the main microcomputer via the UART.
Upon receiving the data, a warning indication will be
displayed for 30 sec, after which a shutdown process
starts. The main microcomputer orders a specific LED
flash pattern (blue LED, 4 times).
The next PON operation is valid, and the flag is cleared
upon the next power-on.

If any values equal to or greater than minimum to
require a shutdown is detected (established) under the
monitoring conditions, those changes in status will be
transmitted to the main microcomputer via the UART.
Upon receiving the data, the main microcomputer
orders a specific LED flash pattern (blue LED, 4 times).
The next PON operation is valid, and the flag is cleared
upon the next power-on.

C

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6. SERVICE FACTORY MODE

6.1 OUTLINE OF THE SERVICE FACTORY MODE

Operations during Service Factory mode are described here.

A

6.1.1 SERVICE FACTORY MODE TRANSITION CHART

Standby mode Power supply ON mode

POWER
[POF]

B

FAC T
[FAY]

FAC T
HOME MENU
[FAN]

• The function is changed.

• The signal mode is changed.

C

D

INFORMATION

(MTB INFORMATION)

PANEL FACTORY

OPTION

INITIALIZE

6.1.2 HOW TO ENTER/EXIT SERVICE FACTORY MODE

How to enter Service Factory Mode

By using a PDP service remote control)

• PDP service remote control : Press [FACTORY] key.
By issuing RS-232C commands )

• During normal Standby mode : Issue [PON] then [FAY].

• During normal operation mode : Issue [FAY].

How to exit Service Factory Mode

By using a PDP service remote control)

• PDP service remote control : press [FACTORY] key.

E

• Supplied remote control unit : press [HOME MENU] key.
By issuing RS-232C commands)

• Issue [FAN].

How to enter Service Factory Mode by Using the
supplied Remote Control Unit

• Same as previous model. Please refer to the technical document
(Service Know-how).

Effective IR in Factory mode

RS-232C Factory mode

[ (MUTING)]

Effective 232C
command in Factory mode

F

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6.1.3 FUNCTIONS WHEN ENTERING THE SERVICE FACTORY MODE

Fuctions whose setting are set to OFF

The settings for the following functions are set to OFF when Service Factory mode is entered
(including when the “FAY” command is received) :

Function Remarks

2-Screen Operation Input function set on the main side is selected.
FREEZE
Auto size, Side Mask
ORBITER, Mask control Central value operation (ORBITER)
Sleep Timer Cancel the operation.
Room light sensor Turn off the detecting operation excepting Regular A, D model (Setting data will be retained.)

Blue LED dimmer Turn off the operation (Setting data will be retained.)
Power control Turn off the operation (Setting data will be retained.)

Image position Central value operation

It is not performed during Factory mode.

User data

User data will be treated as follows :

• User data on picture-quality and audio-quality adjustments are not reflected, and factory-preset data are output
(user data will be retained in memory). When the unit enters Service Factory mode, the current audio-quality adjustment
data will be still be retained in memory.

• User-setting data will be applied to the various settings (items on the menus), signal formats, and the items that are
associated with path change (HDMI settings, etc.).

• Data on screen (i.e., screen position; meaning clock dividers, and not including data on screen size).
Are reset to the default values (data stored in memory will be retained).
Screen size will be retained.

A

B

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6.1.4 REMOTE CONTROL CODE IN SERVICE FACTORY MODE

A

Remote Control Keys Basic Functions Remarks

MUTING Switching the main items. Shifting to the next main item (top).

j (DOWN)
i (UP)
k (LEFT)
l (RIGHT)

ENTER/SET Switching the layers. Shifting downward or upward to the next lower or upper layer.
INPUT Selecting INPUT. Shifting the INPUT to the next function.
INPUTxx Selecting INPUT. Switching the INPUT to xx. (xx=1 to 6 etc)

B

CH+/P+ Increasing the channel number.
CH-/P- Decreasing the channel number.
Numeric Keys Function: TV Function: TV (previously selected channel number is selected)
POWER Power OFF. Turning the power off.

FACTORY

HOME MENU Menu ON. In Factory mode, turn Factory mode off.
VOLUME+ Volume UP. Increasing 10 the adjustment value. (PANEL FACTORY)
VOLUME- Volume DOWN. Decreasing 10 the adjustment value. (PANEL FACTORY)

C

DRIVE OFF (Note1) Drive Mode OFF. Turning Drive mode off.
INTEGRATOR INTEGRATOR MENU ON. Enter INTEGRATOR MODE.

(Note 1) When ten seconds have passed since the [DRIVE OFF] key was pressed at the standby, it becomes invalid.
Please press [POWER] key from the [DRIVE OFF] key pressing within ten seconds when you do power supply ON while
driven OFF.

Switching the subtitled items. Shifting downward to the next subtitiled item.
Switching the subtitled items. Shifting upward to the next upper layer.
Decreasing the adjustment value. Decreasing the adjustment value.
Increasing the adjustment value. Increasing the adjustment value.

Factory OFF (Factory mode) In Factory mode, turning Factory mode off.
Factory ON (Non-Factory mode). In Non-Factory mode, turn Fuctory mode on.

D

E

PDP service
remote control

F

PDP-428XD
PDP-508XD

PDP-4280XD
PDP-5080XD

PDP-4280XA
PDP-5080XA

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6.1.5 PDP SERVICE REMOTE CONTROL

• The keys labeled with the same names on the service remote control unit have the same functions as those of the supplied
remote control unit. (See "2.3 PANEL FACILITIES.")

• For the keys not provided on the supplied remote control unit, see the explanations below:

GENERATION switch for remote control codes
This switch selects the generation of remote control
codes to be transmitted:
1: The old-generation codes are transmitted.
2: The new-generation codes are transmitted.
With this generation plasma display, set the switch
to 2.

A

B

C

INTEGRATOR

Press this key to enter Integrator mode.

SUB INPUT

Not used with this model.

DRIVE OFF

Press this key to turn off the panel drive.
For details on how to cancel this command,
see the explanation for the DRV command.

AUTO SETUP

Use this key for automatic setup, such as
the display position setting when an analog
PC signal is input.

ID NO. SET

Not used with this model.

AV SELECTION

The AV SELECTION settings are changed
cyclically.

POINT ZOOM

Not used with this model.

ZOOM +/-

Not used with this model.

INPUT

Press this key to cyclically change the input source.

EXT INPUT

Press this key to cyclically change only the
external input source.

FACTORY

Press this key to enter Factory mode.

2nd FACTORY

Not used with this model.

POWER CONTROL

Not used with this model.

CLEAR

Not used with this model.

POWER ON

Press this key to turn on the unit.
This key cannot turn the unit off.

POWER OFF

Press this key to turn off the unit.
This key cannot turn the unit on.

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6.1.6 FACTORY HIERARCHICAL TABLE

A

Large Item

Middle Item

6.2.1 INFORMATION

B

6.2.2 PANEL FACTORY (+)

6.2.1.1 VERSION (1)

6.2.1.2 VERSION (2)

6.2.1.3 MAIN NG

6.2.1.4 TEMPERATURE

6.2.1.5 HOUR METER

6.2.1.6 HDMI SIGNAL INFO 1

6.2.1.7 HDMI SIGNAL INFO 2

6.2.1.8 VDEC SIGNAL INFO 1

6.2.1.9 VDEC SIGNAL INFO 2

6.2.2.1 PANEL INFORMATION

6.2.2.2 PANEL WORKS

6.2.2.3 POWER DOWN

6.2.2.4 SHUT DOWN

6.2.2.5 PANEL-1 ADJ (+) VOL SUS <=> 000 to 255 Equivalent to VSU

C

D

6.2.2.6 PANEL-2 ADJ (+) R-HIGH <=> 000 to 511 Equivalent to PRH

6.2.2.7 PANEL FUNCTION (+) R-LEVEL <=> LV-0 to LV-7 Equivalent to RRL (Setting value: Lv-0)

E

6.2.2.8 ETC. (+) BACKUP DATA <=> NO OPRT <=> TRANSFER or ERR Equivalent to BCP

F

6.2.2.9 RASTER MASK SETUP (+) MASK OFF Equivalent to MKS+S00

Small Item

CLEAR <=> NO <=> YES

VOL OFFSET <=> 000 to 255 Equivalent to VOF
VOL RST P <=> 000 to 255 Equivalent to VRP
VOL XPOFS1 <=> 000 to 255 Equivalent to VX1
VOL XPOFS2 <=> 000 to 255 Equivalent to VX2
VOL YNOFS1 <=> 000 to 255 Equivalent to VY1
VOL YNOFS3 <=> 000 to 255 Equivalent to VY3
VOL YNOFS4 <=> 000 to 255 Equivalent to VY4
RESET1ST_KSB <=> 112 to 144 Equivalent to R1K (Setting value: 128 fixed)
RESET2ND_KSB <=> 112 to 144 Equivalent to R2K (Setting value: 128 fixed)
YSTL_1SF_KSB <=> 112 to 144 Equivalent to Y1K (Setting value: 128 fixed)
YSTL_1SF_HZ <=> 112 to 144 Equivalent to Y1Z (Setting value: 128 fixed)
XSUS_1ST_B <=> 112 to 144 Equivalent to X1B (Setting value: 128 fixed)
YSUS_2ND_B <=> 112 to 144 Equivalent to Y2B (Setting value: 128 fixed)
XSUS_3RD_B <=> 112 to 144 Equivalent to X3B (Setting value: 128 fixed)
YSUS_B <=> 112 to 144 Equivalent to YSB (Setting value: 128 fixed)
XSUS_B <=> 112 to 144 Equivalent to XSB (Setting value: 128 fixed)
YSTL_KSB <=> 112 to 144 Equivalent to YTK (Setting value: 128 fixed)
YSTL_HZ <=> 112 to 144 Equivalent to YTZ (Setting value: 128 fixed)
YSTL_2SF_KSB <=> 112 to 144 Equivalent to Y2K (Setting value: 128 fixed)
YSTL_2SF_HZ <=> 112 to 144 Equivalent to Y2Z (Setting value: 128 fixed)
YSTL_FMR_KSB <=> 112 to 144 Equivalent to YNK (Setting value: 128 fixed)
YSTL_FMR_HZ <=> 112 to 144 Equivalent to YNZ (Setting value: 128 fixed)
SUS FREQ. <=> MODE 1 to MODE 8 Equivalent to SFR (Setting value: MODE1)

G-HIGH <=> 000 to 511 Equivalent to PGH
B-HIGH <=> 000 to 511 Equivalent to PBH
R-LOW <=> 000 to 999 Equivalent to PRL (Setting value: 512 fixed)
G-LOW <=> 000 to 999 Equivalent to PGL (Setting value: 512 fixed)
B-LOW <=> 000 to 999 Equivalent to PBL (Setting value: 512 fixed)
ABL <=> 000 to 255 Equivalent to ABL

G-LEVEL <=> LV-0 to LV-7 Equivalent to RGL (Setting value: Lv-0)
B-LEVEL <=> LV-0 to LV-7 Equivalent to RBL (Setting value: Lv-0)
ADDRESS L1 <=> PH0 to PH9 Equivalent to AP0S*- (Setting value: PH1)
ADDRESS L2 <=> PH0 to PH9 Equivalent to AP0S-* (Setting value: PH2)
ADDRESS L3 <=> PH0 to PH9 Equivalent to AP1S*- (Setting value: PH0)
ADDRESS L4 <=> PH0 to PH9 Equivalent to AP1S-* (Setting value: PH1)
ADDRESS U1 <=> PH0 to PH9 Equivalent to AP2S*- (Setting value: PH0)
ADDRESS U2 <=> PH0 to PH9 Equivalent to AP2S-* (Setting value: PH0)
ADDRESS U3 <=> PH0 to PH9 Equivalent to AP3S*- (Setting value: PH0)
ADDRESS U4 <=> PH0 to PH9 Equivalent to AP3S-* (Setting value: PH0)
STK MODE <=> OFF <=> MODE1 to MODE8 <=> Equivalent to SMK (Setting value: MODE1)

DIGITAL EEPROM <=> NO OPRT <=> DELETE/REPAIR Equivalent to FAJ/UAJ
PD INFO. <=> NO OPRT <=> CLEAR Equivalent to CPD
SD INFO. <=> NO OPRT <=> CLEAR Equivalent to CSD
HR-MTR INFO. <=> NO OPRT <=> CLEAR Equivalent to CHM
PM/B1-B5 <=> NO OPRT <=> CLEAR Equivalent to CPM
P COUNT INFO. <=> NO OPRT <=> CLEAR Equivalent to CPC
MAX TEMP. <=> NO OPRT <=> CLEAR Equivalent to CMT

RST MASK 01 <=> <=> 48V <=> 50V <=> 60V <=>

• • • • • •
RST MASK 25 <=> Equivalent to MKS+S75

Variable / Adjustment Range Remarks

(Setting value: Factory adjustment value)
(Setting value: Factory adjustment value)
(Setting value: Factory adjustment value)
(Setting value: Factory adjustment value)
(Setting value: Factory adjustment value)
(Setting value: Factory adjustment value)
(Setting value: Factory adjustment value)
(Setting value: Factory adjustment value)

(Setting value: Factory adjustment value)
(Setting value: Factory adjustment value)
(Setting value: Factory adjustment value)

(Setting value: Factory adjustment value)

60P <=> 72V <=> 75V <=>

Equivalent to MKS+S51

*: Setting value

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A

Large Item

Middle Item

6.2.2 PANEL FACTORY (+)

6.2.2.10 PATTERN MASK SETUP (+) MASK OFF Equivalent to MKS+S00

6.2.2.11 COMBI MASK SETUP (+) MASK OFF Equivalent to MKC+S00

6.2.3 OPTION

6.2.3.1 EDID WRITE MODE <=>

6.2.3.2 CH PRESET <=>

6.2.3.3 SYNC DET (+)

6.2.4 INITIALIZE

6.2.4.1 SIDE MASK LEVEL (+)

6.2.4.2 FINAL SETUP DATA RESET <=>

6.2.4.3 Wide XGA AUTO <=>

Small Item

PTN MASK 01 <=> Equivalent to MKS+S01

• • • • • •
PTN MASK 49 <=> Equivalent to MKS+S49

CMB MASK 01 <=> Equivalent to MKC+S01

• • • • • •
CMB MASK 17 <=> Equivalent to MKC+S17

SIDE MASK LEVEL <=>

Variable / Adjustment Range Remarks

<=> 48V <=> 50V <=> 60V <=>
60P <=> 72V <=> 75V <=>

<=> 48V <=> 50V <=> 60V <=>
60P <=> 72V <=> 75V <=>

DISABLE <=> ENABLE
USER <=> FACTORY

NO <=> YES

DISABLE <=> ENABLE

Exclusively used for
production line

for the technical analysis

Exclusively used for
technical analysis
(details omitted)

B

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6.1.7 INDICATIONS IN SERVICE FACTORY MODE

A

B

1 5 10 15 20 25 30 35 40

1

5

10

15
16

NNIFOR

EVRSI (N1)O

AMTIO

/IF 0–
AMIN 0–7A22E
UMLTI PRS

OMDULE
ESQ

AP N L I NFO XXXXXXXXE

PIC

PRS

A–V1 3 1010 –NTV HE–B

0A1

0–2E
0–2E

0–6A

_

0–3W

A

0E1
0A1

0A

1

01

A

Main-items

Subtitled-items

Main-item indications

20 25 30 35 40

A–V1 3 1010 –NTV HE–B

12 34

C

1 Input function

Input Functions OSD

AV 1 to 5 AV 1 to 5
Terrestrial Analog Wave AIR

Terrestrial Digital Wave (excepting Regular A model) ARD
Cable CBL
Home Gallery (Step-up D model only) HG
PC PC

2 SIG mode and Screen size

Note: See SIG-Mode Tables. (See next page.)

3 Color system and Signal type

D

Color System and Signal Type

At Composite

NTSC
PA L
PAL M
PAL N
PAL 60

SECAM

4.43 NTSC

E

BLACK/WHITE
Y/CB/CR
Y/PB/PR
RGB

Digital Video signal

4

Option (Destination, Panel Generation, etc.)

Options OSD

Step-up D model EHB

F

Regular D model ESB

Regular A model ERB

Input

NTV

PLV

PMV

PNV

SCV

4NV

BWV

OSD

At S-connector

Input

NTS
PLS

PMS

PNS
P6SP6V
SCS
4NS

BWS
CBR
PBR

RGB

DIG

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2 SIG Mode and Screen size (by User is displayed)

1st and 2nd characters : Resolution of the input signal
3rd and 4th characters : Refresh rate of the input signal
5th character : Selection of the screen size

g Input signal mode table for video signals (resolutions and V frequencies)

1st to 4th Character Signal Type Fv (Hz) Fh (kHz)

10

20

30

40

50

g Input signal mode table for PC signals (resolutions and V frequencies)

1st to 4th Character Signal Type Fv (Hz) Fh (kHz)

C1 70 720 x 400 70.087 31.469
C2
C4

C6 1280 x 720
C7
C9 60 1360 x 768 60.015 47.712
D6 60 1280 x 1024 60.000 64.000

50 SDTV*625i 50.000 15.750
60 SDTV*525i 60.000 15.750
50 SDTV*625p 50.000 31.500
60 SDTV*525p 60.000 31.500
50 HDTV*1125i 50.000 33.750
60 HDTV*1125i 60.000 33.750
50 HDTV*750p 50.000 45.000
60 HDTV*750p 60.000 45.000
24 HDTV*1125p 24.000 27.000
50 HDTV*1125p 50.000 56.250
60 HDTV*1125p 60.000 67.500

Fv: Vertical Frequency, Fh: Horizontal Frequency

60
60 60.317 37.879
60 60.000 44.800
60

640 x 480
800 x 600

1024 x 768

59.940 31.469

60.004 48.363

Fv: Vertical Frequency, Fh: Horizontal Frequency

A

B

C

g Current selection of the screen size

5th Character GUI Notation VIDEO PC Remarks

0 DOT BY DOT
1 4:3
2 FULL
3 ZOOM
4 CINEMA
5 WIDE
6 FULL 14:9
7 CINEMA 14:9

k (∗) −

kk
kk
k
k
k
k
k

k: supported, −: unsupported

(∗): It is effective only with models having the Full HD panel.

−

−

−

−

−

D

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6.2 DETAILS OF FACTORY MENU

6.2.1 INFORMATION

A

 Operation items

No. Function/Display Context

6.2.1.1 VERSION (1)

6.2.1.2 VERSION (2) The Flash memory versions for each device are displayed. (Individual part) QSE

6.2.1.3 MAIN NG The Shutdown Message ID/Event Times in Main Microcomputer are displayed. QNG

6.2.1.4 TEMPERATURE The Temperature/FAN rotating status in Main Microcomputer are displayed. QMT

6.2.1.5 HOUR METER The HOUR METER/P-COUNT information are displayed. QS3

6.2.1.6 HDMI SIGNAL INFO 1

B

6.2.1.7 HDMI SIGNAL INFO 2

6.2.1.8 VDEC SIGNAL INFO 1

6.2.1.9 VDEC SIGNAL INFO 2

6.2.1.1 VERSION (1)

The software versions for each microcomputer are displayed. (Common part)

The Information of HDMI information files are displayed.

Display the Signal Information on VDEC. –

RS-232C

Command

QS1

–

1 5 10 15 20 25 30 35 40

C

D

Microcomputer Item Name

1

5

10

15
16

NNIFOR

EVRSI (N1)O

AMTIO

/IF 0–
AMIN 0–7A22E
UMLTI PRS

OMDULE
ESQ

AP N L I NFO XXXXXXXXE

PIC

PRS

A–V1 3 1010 –NTV HE–B

0A1

0–2E
0–2E

0–6A

_

0–3W

A

0E1
0A1

0AA1
01

Display Example

(Execution program block)

Display Example

(Boot block)

I/F microcomputer I/F -07A 01A
Main microcomputer MAIN -02E2 01E
Multi processor MULTI PRS -02E 01A
Multi processor MULTI PIC -02E
Module microcomputer MODULE -06A 01A

E

Sequence processor SEQ PRS -03W_A 01A

Note: In the 29-32 rows, the Boot version information on each device is displayed.
In the 19-24 rows, the version of the execution program is displayed.

• PANEL INFO: It displays the generation of the panel, inchage and the type of the panel. For details on display values and settings,
see "10: Panel Information" in "9.3.1. QS1 (PANEL STATUS)."

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6.2.1.2 VERSION (2)

1 5 10 15 20 25 30 35 40

1

5

10

15
16

Step-up D / Regular D

Meaning Item Name

DTV Hardware Version DTV HARD 0001
User Password PASSWORD 1234

NNIFOR

EVRSI (N2)O

AMTIO

TDBHADR0001
APSWS ORD 1234

A

A–V1 3 1060 –NTV HE–B

B

Display Example

C

1 5 10 15 20 25 30 35 40

1

5

10

15
16

NNIFOR

EVRSI (N2)O

AMTIO

APSWS ORD 1234

A–V1 3 1060 –NTV HE–B

Regular A

Meaning Item Name

User Password PASSWORD 1234

D

Display Example

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A

6.2.1.3 MAIN NG

B

MTB side's Shutdown NG information

OSD: MAIN OSD: SUB Cause of Shutdown

C

D

E

AUDIO ---­MODULE ---- Failure of communication to Module microcomputer.
MA-3L 3-wire Serial Communication of Main microcomputer.

MA-IIC IIC Communication failure of Main microcomputer

MAIN Communication failure of Main microcomputer
FAN Fan stopped

TEMP2
DTUNER Failure of Digital Tuner

RST-MA

MA-EEP IIC communication line between EEPROM and MAIN

1 5 10 15 20 25 30 35 40

1

5

10

15
16

NNIFOR

AMI

3
4
5
6
7
8

AMTIO

NGN

AMIN

AM1–II
AM2

–IIC
MA – 3 L
MA I N

TEMP2

C

A–V1 3 1060 –NTV HE–

USB

EF1
VA–SW

FI
––––––
––––––

5001 1H21M

3000 1H50M
1000 3H03M
0000 2H52M
0000 1H58M
0000 0H07M

B

Short-circuit of the speaker terminal or failure of audio amplifier.

IF Communication failure of IF microcomputer
MULTI Multi Processor communication failure

FE1 Analog Tuner 1
MSPMAP MSP/MAP

AV-SW AV Switch
RGB-SW RGB Switch
VDEC VDEC

SDRAM VDEC-SDRAM
ADC AD/PLL

HDMI HDMI
DEMOD

COFDM error

FAN 1
FAN2 Fan stopped (Only with models having the Full HD panel)

Abnormally high temperature at MTB.

PS/RST Failure to DTV Starting
D-ANT Abnormally in the anntenna power supply of DTV tuner

M-DCDC Abnormally in RST2 of MTB. (power decrease of DC-DC converter)
RELAY Relay Power Supply

F

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1 5 10 15 20 25 30 35 40

1

5

10

15
16

NNIFOR

A

8

CMLEAR <=> : NO

AMTIO

IN GN

A–V1 3 1060 –NTV HE–B

Operation:

Even if [k] key or [l] key is pressed, {CLEAR <=> :YES} ⇔ {CLEAR <=> :NO} is repeated.
If the [ENTER/SET] key is kept on pressing for 5 second when the status of this menu is <YES>,
clear process will begin.

A

B

C

D

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A

6.2.1.4 TEMPERATURE

A present temperature and the FAN rotation are displayed.
If either [k] key or [l] key is pressed, the display data is refreshed.

1 5 10 15 20 25 30 35 40

1

5

B

10

15
16

NNIFOR

ETMP ARUREET

AMTIO

METP1

METP2::

N1AF

N2AF–––

SENS OR–B203(A/D)1

:

:

:

• Display/Meaning

TEMP1 : The temperature of the sensor on the panel side is displayed by the centigrade.
TEMP2 : The temperature conversion display is done with 10 bit the A/D input value of IF uCOM 90 pin (AN4). It is displayed by
both the centigrade (C) and 8 bit A/D value.

C

(Remark:When temperature (C) of the sensor becomes more than a specified temperature, the shutdown start of processing.)
FAN1 : The value of the FAN rotating state is displayed.
STOP: stopped, LOW: slow speed, HIGH: high speed.
FAN2 : The value of the rotation state of FAN is displayed.
During a rotation of FAN, 8bit D/A value output from 2 pin (DA0) of IF uCOM is displayed.
It is displayed with OFF during a stop (only for the FHD model).
B-SENSOR : The value that indicated the degree of brightness input into an Room light sensor is displayed.
AD value when the output of the Room light sensor was input into 89 pin (AN5) of IF uCOM is displayed.
However, the Regular A, D model is not displayed.

A–V1 3 1060 –NTV HE–B

04+.2

(C )

04+.2

(C ) 031(A/D)

WOL

6.2.1.5 HOUR METER

D

E

• Display/Meaning

Meaning Item Name Display Example Corresponding RS-232C Command

HOUR METER (PANEL) PANEL 00151H 21M QS3
POWER ON COUNTER P-COUNT 00000095 TIMES QS3
SYSTEM SERIAL SERIAL QS3

Note: The PANEL-side's HOUR METER/P-COUNT acquires information from the PANEL-side.

F

1 5 10 15 20 25 30 35 40

1

5

10

15
16

NNIFOR

OHUR EMERT

NAPEL

PAN E L

PC-OUN
SREIAL

AMTIO

COU N T

T

A–V1 3 1060 –NTV HE–

5001 1H 21M

S/ERIAL

9TIMES

0

_______________

500000

B

100

PDP-4280XA

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