GPF11DU
© 2008 Matsushita Electric Industrial Co., Ltd. All
rights reserved. Unauthorized copying an d distribu-
tion is a violation of law.
ORDER NO. MTNC080850CE
B34 Canada: B07
42 inch Class 1080p Plasma HDTV
Model No. TH-42PZ80UA
GPF11DU Chassis
2
1 Safety Precautions
1.1. General Guidelines
1. When conducting repairs and servicing, do not attempt to modify the equipment, its parts or its materials.
2. When wiring units (with cables, flexible cables or lead wires) are supplied as repair parts and only one wire or some of the
wires have been broken or disconnected, do not attempt to repair or re-wire the units. Replace the entire wiring unit instead.
3. When conducting repairs and servicing, do not twist the Faston connectors but plug them straight in or unplug them straight
out.
4. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or
damaged by the short circuit.
5. After servicing, see to it that all the protective devices such as insulation barriers, ins ulation papers shields are properly
installed.
6. After servicing, make the following leakage current checks to prevent the customer from being exposed to shock hazards.
1.1.1. Leakage Current Cold Check
1. Unplug the AC cord and connect a jumper between the
two prongs on the plug.
2. Measure the resistance value, with an ohmmeter,
between the jumpered AC plug and each exposed metal-
lic cabinet part on the equipment such as screwheads,
connectors, control shafts, etc. When the exposed metal-
lic part has a return path to the chassis, the reading
should be between 1Mohm and 5.2Mohm.
When the exposed metal does not have a return path to
the chassis, the reading must be .
1.1.2. Leakage Current Hot Check (See
Figure 1.)
1. Plug the AC cord directly into the AC outlet. Do not use
an isolation transformer for this check.
2. Connect a 1.5kohm, 10 watts resistor, in parallel with a
0.15μF capacitors, between each exposed metallic part
on the set and a good earth ground such as a water pipe,
as shown in Figure 1.
3. Use an AC voltmeter, with 1000 ohms/volt or more sensi-
tivity, to measure the potential across the resistor.
4. Check each exposed metallic part, and measure the volt-
age at each point.
5. Reverse the AC plug in the AC outlet and repeat each of
the above measurements.
6. The potential at any point should not exceed 0.75 volts
RMS. A leakage current tester (Simpson Model 229 or
equivalent) may be used to make the hot checks, leakage
current must not exceed 1/2 milliamp. In case a mea-
surement is outside of the limits specified, there is a pos-
sibility of a shock hazard, and the equipment should be
repaired and rechecked before it is returned to the cus-
tomer.
Figure 1
3
2Warning
2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically
Sensitive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Elec-
trostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and
semiconductor [chip] components. The following techniques should be used to help reduce the incidence of component damage
caused by electrostatic discharge (ESD).
1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your
body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap,
which should be removed for potential shock reasons prior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as alumi-
num foil, to prevent electrostatic charge buildup or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4. Use only an anti-static solder removal device. Some solder removal devices not classified as [anti-static (ESD protected)] can
generate electrical charge sufficient to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.
6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most
replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or compara-
ble conductive material).
7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material
to the chassis or circuit assembly into which the device will be installed.
Caution
Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise ham less motion such as the brush-
ing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) sufficient
to damage an ES device).
4
2.2. About lead free solder (PbF)
Note: Lead is listed as (Pb) in the periodic table of elements.
In the information below, Pb will refer to Lead solder, and PbF will refer to Lead Free Solder.
The Lead Free Solder used in our manufacturing process and discussed below is (Sn+Ag+Cu).
That is Tin (Sn), Silver (Ag) and Copper (Cu) although other types are available.
This model uses Pb Free solder in it’s manufacture due to environmental conservation issues. For service and repair work, we’d
suggest the use of Pb free solder as well, although Pb solder may be used.
PCBs manufactured using lead free solder will have the PbF within a leaf Symbol PbF stamped on the back of PCB.
Caution
• Pb free solder has a higher melting point than standard solder. Typically the melting point is 50 ~ 70 °F (30~40 °C) higher. Please
use a high temperature soldering iron and set it to 700 ± 20 °F (370 ± 10 °C).
• Pb free solder will tend to splash when heated too high (about 1100 °F or 600 °C).
If you must use Pb solder, please completely remove all of the Pb free solder on the pins or solder area before applying Pb sol-
der. If this is not practical, be sure to heat the Pb free solder until it melts, before applying Pb solder.
• After applying PbF solder to double layered boards, please check the component side for excess solder which may flow onto the
opposite side. (see figure below)
Suggested Pb free solder
There are several kinds of Pb free solder available for purchase. This product uses Sn+Ag+Cu (tin, silver, copper) solder. How-
ever, Sn+Cu (tin, copper), Sn+Zn+Bi (tin, zinc, bismuth) solder can also be used.
5
3 Service Navigation
3.1. Important Notice
3.1.1. MANUFACTURING ID NO.
This service manual is for MANU FACTURING ID NO. TH-42PZ80UA as indicate d in the label at side and th e mo del name plate of
the unit.
3.2. Different PCB
Parts No. Parts name & Description Remarks
TH-42PZ80U TH-42PZ80UA
TNPH0721ADS TNPH0721AJS CIRCUIT BOARD A PAVCA
ETX2MM702MFN N0AE6KM00001 CIRCUIT BOARD P PAVCA
TNPA4243ADS TNPA4243ABS CIRCUIT BOARD PB PAVCA
TXNC11RLTU CIRCUIT BOARD C1 PAVCA
TXNC21RLTU CIRCUIT BOARD C2 PAVCA
TNPA4439ALS TNPA4439BLS CIRCUIT BOARD D PAVCA
TXNSC1RLTUS TXNSC1AYUUS CIRCUIT BOARD SC PAVCA
TXNSD1RLTU CIRCUIT BOARD SD PAVCA
TXNSS1RLTU TXNSS1AYUU CIRCUIT BOARD SS PAVCA
TXNSU1RLTU CIRCUIT BOARD SU PAVCA
TNPA4501S CIRCUIT BOARD G PAVCA
TNPA4603ABS CIRCUIT BOARD GH PAVCA
TNPA4139ADS CIRCUIT BOARD GS PAVCA
TNPA4500S CIRCUIT BOARD K PAVCA
TNPA4499S CIRCUIT BOARD S PAVCA
6
3.3. Service Hint
Board Name Function Board Name Function
P Power Supply C1 Data Driver (Lower Right)
A DC-DC Converter
Speaker out, Sound Processor
AV Terminal, AV Switch
Digital Signal Processor, Micom, HDMI Interface
Peaks Lite 2p
C2 Data Driver (Lower Left)
SC Scan Drive
SU Scan out (Upper)
SD Scan out (Lower)
SS Sustain Drive
D Format Converter, Plasma AI, Sub-Field Processor GH HDMI3 in
K Remote receiver, Power LED G Front Terminal, Key Switch
S Power Switch PB Fan control
GS SD Card Slot
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3.4. Applicable signals
* Mark: Applicable input signal for Component (Y, PB, PR) and HDMI
Note
• Signals other than those may not be displayed properly.
• The above signals are reformatted for optimal viewing on your display.
horizontal frequency (kHz) vertical frequency (Hz) COMPONENT HDMI
525 (480) / 60i 15.73 59.94 * *
525 (480) /60p 31.47 59.94 * *
750 (720) /60p 45.00 59.94 * *
1,125 (1,080) /60i 33.75 59.94 * *
1,125 (1,080) /60p 67.43 59.94 *
1,125 (1,080) /60p 67.50 60.00 *
1,125 (1,080) /24p 26.97 23.98 *
1,125 (1,080) /24p 27.00 24.00 *
8
4 Specifications
Power Source AC 120 V, 60 Hz
Power Consumption
Maximum 573 W
Standby condition 0.2 W
Plasma Display panel
Drive method AC type
Aspect Ratio 16:9
Visible screen size 42 inch class (41.6 inches measured diagonally)
(W × H × Diagonal) 36.2 inch × 20.4 inch × 41.6 inch (922 mm × 518 mm × 1,057 mm)
(No. of pixels) 2,073,600 (1,920 (W) × 1,080 (H))[5,760 × 1,080 dots]
Sound
Audio Output 20 W [ 10 W + 10 W ] ( 10 % THD )
Channel Capability (Digital/Analog) VHF/ UHF: 2 - 69, CATV: 1 - 135
Operating Conditions
Temperature: 32 °F - 104 °F (0 °C - 40 °C)
Humidity: 20 % - 80 % RH (non-condensing)
Connection Terminals
VIDEO IN 1-2 VIDEO: RCA PIN Type × 1 1.0 V [p-p] (75 Ω)
S-VIDEO: Mini DIN 4-pin Y: 1.0 V [p-p] (75 Ω) C: 0.286 V [p-p] (75 Ω)
AUDIO L-R: RCA PIN Type × 2 0.5 V [rms]
COMPONENT INPUT 1-2 Y: 1.0 V [p-p] (including synchronization)
P
B
, P
R
: ±0.35 V [p-p]
AUDIO L-R: RCA PIN Type × 2 0.5 V [rms]
HDMI 1-3 TYPE A Connector × 3
This TV supports [HDAVI Control 3] function.
Card slot SD CARD slot × 1
AV PROG OUT VIDEO: RCA PIN Type × 1 1.0 V [p-p] (75 Ω)
AUDIO L-R: RCA PIN Type × 2 0.5 V [rms]
DIGITAL AUDIO OUT PCM / Dolby Digital, Fiber Optic
FEATURES 3D Y/C FILTER
CLOSED CAPTION V-Chip
Photo Viewer HDAVI Control 3
Dimensions (W × H × D)
Including pedestal 41.3 inch × 28.7 inch × 12.9 inch (1,048 mm × 727 mm × 327 mm)
TV Set only 41.3 inch × 26.8 inch × 3.8 inch (1,048 mm × 679 mm × 95 mm)
Mass
Including pedestal 70.6 lb. (32 kg)
TV Set only 66.1 lb. (30 kg)
Note
• Design and Specifications are subject to change without notice. Mass and Dimensions shown are approximate.
9
5 Service Mode
5.1. How to enter into Service Mode
While pressing [VOLUME ( - )] button of the main unit, press [INFO] button of the remote control three times within 2 seconds.
5.1.1. Key command
[1] button...Main items Selection in forward direction
[2] button...Main items Selection in reverse direction
[3] button...Sub items Selection in forward direction
[4] button...Sub items Selection in reverse direction
[VOL] button...Value of sub items change in forward direction ( + ), in reverse direction ( - )
10
5.1.2. Contents of adjustment mode
• Value is shown as a hexadecimal number.
• Preset value differs depending on models.
• After entering the adjustment mode, take note of the value in each item before starting adjustment.
5.1.3. How to exit
Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control.
Main item Sub item Sample Data Remark
ADJUST CONTRAST 000
COLOR 3C
TINT 03
SUB-BRT 800
WB-ADJ R-CUT 80
G-CUT 80
B-CUT 80
R-DRV FC
G-DRV F8
B-DRV D9
ALL-CUT 80
ALL-DRV FC
OPTION BOOT ROM Factory Preset
STBY-SET 00
EMERGENCY ON
CLK MODE 00
CLOCK 000
AGING RGBW
COUNT
ALL WHITE
ALL RED
ALL GREEN
ALL BLUE
ON/OFF
RAMP WHITE
RAMP RED
RAMP GREEN
RAMP BLUE
1% WINDOW
COLOR BAR
A-ZONE B-ZONE/4 TRIO
SCROLL
WHITE FLAME
RM-SET CODE A Fixed
SRV-TOOL - See next
11
5.2. Service tool mode
5.2.1. How to access
1. Select [SRV-TOOL] in Service Mode.
2. Press [OK] button on the remote control.
5.2.2. Display of SOS History
SOS History (Number of LED blinking) indication.
From left side; Last SOS, before Last, three occurrence before, 2nd occurrence after shipment, 1st occurrence after shipment.
This indication except 2nd and 1st occurrence after shipment will be cleared by [Self-check indication and forced to factory ship-
ment setting].
5.2.3. POWER ON TIME/COUNT
Note : To display TIME/COUNT menu, highlight position, then press MUTE for (3sec).
Time : Cumulative power on time, indicated hour : minute by decimal
Count : Number of ON times by decimal
Note : This indication will not be cleared by either of the self-checks or any other command.
5.2.4. Exit
1. Disconnect the AC cord from wall outlet.
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5.3. Hotel mode
1. Purpose
Restrict a function for hotels.
2. Access command to the Hotel mode setup menu
In order to display the Hotel mode setup menu, please
enter the following command (within 2 second).
[TV] : Vol. [Down] + [REMOTE] : TV/VIDEO (3 times)
Then, the Hotel mode setup menu is displayed.
3. To exit the Hotel mode setup menu
Disconnect AC power cord from wall outlet.
4. Explain the Hotel mode setup menu
item Function
Mode Select hotel mode ON/OFF
Input Select input signal modes.
Set the input, when each time power is
switched on.
Selection:
-/RF/COMP1/COMP2/HDMI1/HDMI2/HDMI3
VIDEO1/VIDEO2
• Off: give priority to a last memory.
Channel Select channel when input signal is RF.
Set the channel, each time power is switched
on.
Selection:
Any channel number or [-].
[-] means the channel when turns off.
Volume Adjust the volume when each time p ower is
switched on.
Range:
0 to 100
Vol. Max Adjust maximum volume.
Range:
0 to 100
OSD Ctrl Restrict the OSD.
Selection:
OFF/PATTERN1
• OFF: No restriction
• PATTERN1: restriction
FP Ctrl Select front key conditions.
Selection:
Off/Pattern1/All
• Off: altogether valid.
• Pattern: only input key is valid.
• All: altogether invalid.
Pow Ctrl Select POWER-ON/OFF condition when AC
power cord is disconnected and then con-
nected.
OFF: The same condition when AC power
cord is disconnected.
ON: Forced power ON condition.
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6 Troubleshooting Guide
Use the self-check function to test the unit.
1. Checking the IIC bus lines
2. Power LED Blinking timing
6.1. Check of the IIC bus lines
6.1.1. How to access
Self-check indication only:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [OK] button on the remote control
for more than 3 seconds.
Self-check indication and forced to factory shipment setting:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote
control for more than 3 seconds.
6.1.2. Exit
Disconnect the AC cord from wall outlet.
6.1.3. Screen display
6.1.4. Check Point
Confirm the following parts if NG was displayed.
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6.2. Power LED Blinking timing chart
1. Subject
Information of LED Flashing timing chart.
2. Contents
When an abnormality has occurred the unit, the protection circuit operates and reset to the stand by mode. At this time, the
defective block can be identified by the number of blinks of the Power LED on the front panel of the unit.
15
6.3. No Power
First check point
There are following 2 states of No Power indication by power LED.
1. No lit
2. Red is lit then turns red blinking a few seconds later. (See 6.2.)
16
6.4. No Picture
17
6.5. Local screen failure
Plasma display may have local area failure on the screen. Fig-1 is the possible defect P.C.B. for each local area.
Fig-1
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7 Disassembly and Assembly Instructions
Caution:
Exchange printed circuit board after confirm parts number.
7.1. Remove the Rear cover
1. See Service Hint (Section 3)
7.2. Remove the Fan unit
1. Unlock the cable clampers to free the cable.
2. Remove the screws (×3 ).
3. Remove the relay connectors and remove the Fan unit.
4. Remove the screw (×1 ) on the back side.
5. Remove the Fan.
7.3. Remove the PB-Board
1. Unlock the cable clampers to free the cable.
2. Remove the screws (×2 ).
3. Remove a short-jumper connectors (PB31 and PB32)
and re-use for new PB-Board.
4. Disconnect the connectors (PB30, PB33, PB34, PB35,
PB36 and PB37)
5. Remove the PB-Board.
7.4. Remove the P-Board
Caution:
To remove P.C.B. wait 1 minute after power was off for dis-
charge from electrolysis capacitors.
1. Unlock the cable clampers to free the cable.
2. Disconnect the couplers (P2, P6, P7, P9, P11, P12 and
P25).
3. Remove the screws (×6 ) and remove the P-Board.
Parts name & Description Parts No.
CIRCUIT BOARD A TNPH0721AJS
CIRCUIT BOARD P N0AE6KM00001
CIRCUIT BOARD D TNPA4439BLS
CIRCUIT BOARD SC TXNSC1AYUUS
CIRCUIT BOARD SS TXNSS1AYUU
19
7.5. Remove the Rear Terminal
cover
1. Remove the screws (×4 , ×2 ).
2. Remove the Rear Terminal cover.
7.6. Remove the A-Board unit
1. Unlock the cable clampers to free the cable.
2. Disconnect the connectors (A1, A3, A5, A6, A7, A11, A12,
A30, A51 and A52).
3. Remove the screws (×4 ) and remove the A-Board
unit.
7.7. Remove the A-Board
1. Remove the A-Board unit. (See section 7.6.)
2. Remove the screws (×8 ) and remove the A-Board.
7.8. Remove the SU-Board
1. Remove the flexible cables (SU1, SU2, SU3 and SU4)
connected to the SU-Board.
2. Remove the flexible cable (SU11-SD11) and the bridge
connector (SC41-SU41).
3. Remove the screws (×4 ) and remove the SU-Board.
7.9. Remove the SD-Board
1. Remove the flexible cables (SD1, SD2, SD3 and SD4)
connected to the SD-Board.
2. Remove the flexible cable (SU11-SD11) and the bridge
connectors (SC42-SD42 and SC46-SD46).
3. Remove the screws (×4 ) and remove the SD-Board.
20
7.10. Remove the SC-Board
1. Remove the SU-Board and SD-Board. (See section 7.8.
and 7.9.)
2. Unlock the cable clampers to free the cable.
3. Disconnect the connector (SC2).
4. Disconnect the flexible cable (SC20).
5. Remove the screws (×8 ) and remove the SC-Board.
7.11. Remove the SS-Board
1. Unlock the cable clampers to free the cable.
2. Disconnect the connectors (SS11, SS12, SS33 and
SS35).
3. Remove a short-jumper connector SS34 and re-use for
new SS-Board.
4. Disconnect the flexible cables (SS61, SS63, SS64 and
SS66).
5. Remove the screws (×6 ) and remove the SS-Board.
7.12. Remove the Stand brackets
1. Remove the Plasma panel section from the servicing
stand and lay on a fiat surface such as a table (covered)
with the Plasma panel surface facing downward.
2. Remove the Stand brackets (L, R) fastening screws (×4
each) and remove the Stand brackets (L, R).
7.13. Remove the D-Board
1. Remove the A-Board unit. (See section 7.6.)
2. Disconnect the connectors (D3, D5 and D25).
3. Disconnect the flexible cables (D20, D31, D32 and D33).
4. Remove the screws (×4 ) and remove the D-Board.
21
7.14. Remove the C1-Board
1. Remove the A-Board unit. (See section 7.6.)
2. Remove the Stand bracket R. (See section 7.12.)
3. Remove the screws (×3 ) and Remove the Cabinet
mount metal.
4. Remove the DD-Heat-sink holder fastening screws
(×16 ).
5. Remove the DD-Heat-sink (×8).
6. Disconnect the flexible cables (CB1, CB2, CB3, CB4,
CB5, CB6, CB7 and CB8).
7. Disconnect the flexible cables (C10, C11 and C12).
8. Remove the screws (×5 ) and remove the C1-Board.
7.15. Remove the C2-Board
1. Remove the A-Board unit. (See section 7.6.)
2. Remove the stand bracket L. (See section 7.12.)
3. Remove the screws (×3 ) and Remove the Cabinet
mount metal.
4. Remove the DD-Heat-sink holder fastening screws
(×14 ).
5. Remove the DD-Heat-sink (×7).
6. Disconnect the flexible cables (CB9, CB10, CB11, CB12,
CB13, CB14 and CB15).
7. Disconnect the flexible cables (C20 and C21).
8. Disconnect the connectors (C23 and C25).
9. Remove the screws (×5 ) and remove the C2-Board.
22
7.16. Remove the Front bracket
1. Unlock the cable clampers to free the cable.
2. Disconnect the connectors (A11, A51 and A52). (See sec-
tion 7.6.)
3. Remove the screws (×2 , ×2 ) and remove the
Front bracket.
7.17. Remove the G-Board, GS-
Board and GH-Board
1. Remove the Front bracket. (See section 7.16.)
2. Remove the screws (×2 ).
3. Remove the screws (×3 ).
4. Remove the Front shield case front.
5. Disconnect the connectors (GH11 and GS52).
6. Remove the screws (×2 ).
7. Remove the Front shield top.
8. Remove the GH-Board.
9. Remove the screws (×2 ) and remove the GS-Board.
10. Remove the screws (×3 ).
11. Disconnect the connector (G51) and remove the G-
Board.
7.18. Remove the Speakers
1. Disconnect the relay connectors
2. Remove the screws (×4 each) and remove the
Speaker (L, R).
7.19. Remove the Plasma panel sec-
tion from the Cabinet assy
(glass)
1. Remove the stand brackets (left, right) fastening screw
(×1 each).
23
2. Remove the cabinet assy and the plasma panel fastening
screws (×4 , ×6 ).
3. For leaving the plasma panel from the front frame, pull the
bottom of the cabinet assy forward, lift, and remove.
4. Remove the spacers and spacer rings (×6 ).
7.20. Remove the S-Board
1. Remove the Cabinet assy. (See section 7.19.)
2. Disconnect the connector (S2).
3. Remove the screws (×2 ) and remove the S-Board
metal frame.
4. Remove the screws (×2 ) and remove the S-Board.
7.21. Remove the K-Board
1. Remove the Cabinet assy. (See section 7.19.)
2. Remove the S-Board. (See section 7.20.)
3. Remove the screws (×2 ).
4. Disconnect the connector (K1) and Remove the K-Board.
24
7.22. Replace the plasma panel (fin-
ished)
1. Place the new plasma panel (finished) on the flat surface
of the table (covered by a soft cloth), with the plasma
panel surface facing downward.
2. Attach the C1-Board and the C2-Board, connect the flexi-
ble cables (×15) from the plasma panel to the C1-Board
and the C2-Board, and fit the flexible cable holders.
3. Attach the Hooks (left, right) and fit the stand brackets (L,
R) to the new plasma panel.
4. Place the plasma panel section on the servicing stand.
5. Attach the cabinet assy and each P.C.Board and so on, to
the new plasma panel.
*When fitting the cabinet assy, be careful not to allow
any debris, dust or handling residue to remain
between the front glass and plasma panel.
25
8 Measurements and Adjustments
8.1. Adjustment Procedure
8.1.1. Driver Set-up
8.1.1.1. Item / Preparation
1. Input a white signal to plasma video input.
2. Set the picture controls as follows.
Picture menu: Vivid
Normal: Set
Aspect: Full
Caution
1. First perform Vsus adjustment.
2. Confirmation of Vscn voltage should be performed after
confirmation of Vad adjustment.
When Vad= -140V, Voltage of Vscn is 8V ±1V.
8.1.1.2. Adjustments
Adjust driver section voltages referring the panel data on the
panel data label.
Check or adjust the following voltages with the multimeter.
*See the Panel label.
Name Test Point Voltage Volume Remarks
Vsus TPVSUS
(SS)
Vsus ± 2V VR251 (P) *
Ve TPVE (SS) Ve ± 1V VR16000
(SS)
*
Vset TPVSET
(SC)
330V +7V, -9V Fixed
Vad TPVAD (SC) -140V ± 1V VR16600
(SC)
Vscn TPVSCN
(SC)
Vad+148V ± 1V Fixed
Vda TPVDA (SS) 75V + 1V, -2V Fixed
26
8.1.2. Initialization Pulse Adjust
1. Input the White signal to plasma video input.
2. Set the picture controls as follows.
Picture menu : Vivid
Normal : Set
Aspect : Full
3. Connect Oscilloscope to TPSC1 (SC).
Check the voltage (T2) at 100 us period on the down slop.
8.1.3. P.C.B. (Printed Circuit Board) exchange
8.1.3.1. Caution
1. To remove P.C .B. , wait 1 minute after power was off for discharge from electrolysis capacitors.
8.1.3.2. Quick adjustment after P.C.B. exchange
Adjust the following voltages with the multimeter.
*See the Panel label.
Caution:
Absolutely do not reduce Vsus below Ve not to damage the P.C.B.
Test point Volume Level
T2 TPSC1 (SC) VR16602 (SC) 250 V ± 10 V
P.C.B. Name Test Point Voltage Volume Remarks
P Board Vsus TPVSUS (SS) Vsus ± 2V VR251 (P) *
SC Board Vad TPVAD (SC) -140V ± 1V VR16600 (SC)
SS Board Ve TPVE (SS) Ve ± 1V VR16000 (SS) *
A, D Board White balance and Sub brightness for NTSC, PAL, HD, PC and 625i signals
27
8.1.4. Adjustment Volume Location
8.1.5. Test Point Location
28
8.2. Adjustment
8.2.1. White balance adjustment
Name of measuring instrument Connection Remarks
• W/B pattern
• Color analyzer
(Minolta CA-100 or equivalent)
Component input
Panel surface
Procedure Remarks
• Make sure the front panel to be used on the final set is fitted.
• Make sure a color signal is not being shown before adjustment.
• Put the color analyzer where there is little color variation.
1. Output a white balance pattern.
2. Check that the color temperature is [Cool].
3. Set to serviceman mode, WB-ADJ.
4. Set [R-CUT] [G-CUT] [B-CUT] the values written in table 1.
5. Attach the sensor of color analyzer to the center of highlight window.
6. Fix G drive at C0h and adjust [B-DRV] and [R-DRV] so x, y value of color analyzer
become the [Color temperature High] in table 2.
7. Increase RGB together so the maximum drive value in RGB becomes FC. That is,
set [ALL DRIVE] to FC.
Execute adjustment again. When that , the maximum v alue of R/G/B DRV should be FC,
and either R/G/B DRV should be FC.
8. Set color temperature to [Normal].
9. Set [R-CUT] [G-CUT] [B-CUT] the values written in table 1.
10. Attach the sensor of color analyzer to the center of highlight window.
11. Fix G drive at C0h and adjust [B-DRV] and [R-DRV] so x, y value of color analyzer
become the [Color temperature Mid] in table 2.
12. Increase RGB together so the maximum drive value in RGB becomes FC. That is,
set [ALL DRIVE] to FC.
Execute adjustment again. When that , the maximum v alue of R/G/B DRV should be FC,
and either R/G/B DRV should be FC.
13. Set color temperature to [Warm].
14. Set [R-CUT] [G-CUT] [B-CUT]the values written in table 1.
15. Attach the sensor of color analyzer to the center of highlight window.
16. Fix G drive at C0h and adjust [B-DRV] and [R-DRV] so x, y value of color analyzer
become the [Color temperature Low] in table 2.
17. Increase RGB together so the maximum drive value in RGB becomes FC. That is,
set [ALL DRIVE] to FC.
Execute adjustment again. When that , the maximum v alue of R/G/B DRV should be FC,
and either R/G/B DRV should be FC.
18. Set color temperature to [Cool].
- adjustment of [Normal] [Warm] by data shift from [Cool] adjust. -
For [Normal] [Warm] adjustment, set values that the adjusted value of [Cool]
plus the figures wrote below.
When the measurement data is not in the following toleran ce by the shipping confirma-
tion, please re-adjust.
Tolerance : ( x , y ) = ( setting data±0.007, setting data±0.007)
19. Copy values adjusted by HD pattern to the NTSC data area of EEPROM.
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