Panasonic TH-42PY80P, TH-42PZ80B, TH-42PZ80E Service manual

ORDER NO. PCZ0804028CE

Plasma Television

Model No. TH-42PY80P

TH-42PZ80B
TH-42PZ80E

GPF11DE Chassis

© 2008 Matsushita Electric Industrial Co., Ltd. All
rights reserved. Unauthorized copying and distribu­tion is a violation of law.

1 Safety Precautions

1.1. General Guidelines

1. 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.

2. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly
installed.

3. After servicing, make the following leakage current checks to prevent the customer from being exposed to shock hazards.

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, insulation papers shields are properly
installed.

6. After servicing, make the following leakage current checks to prevent the customer from being exposed to shock hazards.

1.2. Touch-Current Check

1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.

2. Connect a measuring network for touch currents 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 Leakage Current Tester (Simpson 228 or equivalent) to measure the potential across the measuring network.

4. Check each exposed metallic part, and measure the voltage at each point.

5. Reserve the AC plug in the AC outlet and repeat each of the above measure.

6. The potential at any point (TOUGH CURRENT) expressed as voltage U

For a. c.: U1 = 35 V (peak) and U2 = 0.35 V (peak);

For d. c.: U1 = 1.0 V,

Note:

The limit value of U

mA d. c.
The limit value U

7. In case a measurement is out of the limits specified, there is a possibility of a shock hazard, and the equipment should be
repaired and rechecked before it is returned to the customer.

= 0.35 V (peak) for a. c. and U1 = 1.0 V for d. c. correspond to the values 0.7 mA (peak) a. c. and 2.0

2

= 35 V (peak) for a. c. correspond to the value 70 mA (peak) a. c. for frequencies greater than 100 kHz.

1

and U2, does not exceed the following values:

1

Figure 1

2

2 Warning

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 Elec­trostatically 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 alumi­num 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 compara­ble 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 brush­ing 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).

3

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 sol­der. 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. How­ever, Sn+Cu (tin, copper), Sn+Zn+Bi (tin, zinc, bismuth) solder can also be used.

4

3 Service Navigation

3.1. 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, Micon, HDMI Interface
Peaks Lite 2p

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

C2 Data Driver (Lower Left)
SC Scan Drive
SU Scan out (Upper)
SD Scan out (Lower)
SS Sustain Drive

5

3.2. Applicable signals

6

4 Specifications

Power Source AC 220 - 240 V, 50/60 Hz
Power Consumption

Average use 385 W
Standby condition 0.4 W (Without monitor out recording)

Plasma Display panel

Aspect Ratio 16:9
Visible screen size 106 cm (diagonal)

Number of pixels 2,073,600 (1,920 (W) × 1,080 (H)) [5,760 × 1,080 dots]

Sound

Speaker 160 mm × 42 mm × 2 pcs, 8 Ω
Audio Output 20 W (10 W + 10 W), 10% THD
Headphones M3 (3.5 mm) stereo mini Jack × 1

PC signals VGA, SVGA, XGA

Receiving Systems / Band name PAL I : UHF E21-68
(B model) PAL 525/60 : Playback of NTSC tape from some PAL Video recorders (VCR)

(Except B model) PAL B, G, H, I, SECAM B, G, SECAM L/L’ :

Aerial - Rear UHF (B model), VHF/UHF (Except B model)
Operating Conditions

Connection Terminals

AV1 (Scart terminal) 21 Pin terminal (Audio/Video in, Audio/Video out, RGB in, Q-Link)
AV2 (Scart terminal) 21 Pin terminal (Audio/Video in, Audio/Video out, RGB in, S-Video in, Q-Link)
AV3

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

VIDEO Y 1.0 V [p-p] (including synchronization)

AUDIO L - R RCA PIN Type × 2 0.5 V [rms]

Others

HDMI1 / 2 / 3 TYPE A Connectors This TV supports “HDAVI Control 3” function.
PC HIGH-DENSITY D-SUB 15PIN R, G, B/ 0.7 V [p-p] (75 Ω)

Card slot SD Card slot × 1

Output

AUDIO L - R RCA PIN Type × 2 0.5 V [rms] (high impedance)

Dimensions (W × H × D) 1,048 mm × 727 mm × 327 mm (With Pedestal)

Mass 34.0 kg Net (With Pedestal)

20 W (With monitor out recording)

922 mm (W) × 518 mm (H)

SXGA ....... (compressed)

Horizontal scanning frequency 31 - 69 kHz
Vertical scanning frequency 59 - 86 Hz

or NTSC disc playback from DVD player and recorder.

DVB : Digital terrestrial services via UHF aerial input.
M.NTSC : Playback from M.NTSC Video recorders (VCR).
NTSC (AV input only) : Playback from NTSC Video recorders (VCR).

VHF E2 - E12 VHF H1 - H2 (ITALY)
VHF A - H (ITALY) UHF E21 - E69
CATV (S01 - S05) CATV S1 - S10 (M1 - M10)
CATV S11 - S20 (U1 - U10) CATV S21 - S41 (Hyperband)

PAL D, K, SECAM D, K :

VHF R1 - R2 VHF R3 - R5
VHF R6 - R12 UHF E21 -E69

PAL 520/60 : Playback of NTSC tape from some PAL Video recorders (VCR)
DVB : Digital terrestrial services via VHF / UHF aerial input.
M.NTSC : Playback from M. NTSC Video recorders (VCR)
NTSC (AV input only) : Playback from NTSC Video recorders (VCR)

TV signals may not be received in some areas.

Temperature: 0 °C - 35 °C
Humidity: 20 % - 80 % RH (non-condensing)

, P

P

B

R

1,048 mm × 679 mm × 95 mm (TV only)

30.0 kg Net (TV only)

± 0.35 V [p-p]

HD, VD/TTL Level 2.0 - 5.0 V [p-p] (high impedance)

7

Note

• Design and Specifications are subject to change without notice. Mass and Dimensions shown are approximate.

• This equipment complies with the EMC standards listed below.
EN55013, EN61000-3-2, EN61000-3-3, EN55020, EN55022, EN55024.

8

5 Service Mode

5.1. How to enter into Service Mode

While pressing [VOLUME ( - )] button of the main unit, press [0] 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
[RED] button...All Sub items Selection in forward direction
[GREEN] button...All Sub items Selection in reverse direction
[VOL] button...Value of sub items change in forward direction ( + ), in reverse direction ( - )

9

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.

10

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 ship­ment setting].

5.2.3. POWER ON TIME/COUNT

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-check or any command.

5.2.4. Exit

1. Disconnect the AC cord from wall outlet or switch off the power with the [POWER] button on the main unit.

11

5.3. Hotel mode

1. Purpose
Restrict a function for hotels.

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] : AV (3 times)

Then, the Hotel mode setup menu is displayed.

2. To exit the Hotel mode setup menu
Disconnect AC power cord from wall outlet or switch off
the power with the [POWER] button on the main unit.

3. Explain the Hotel mode setup menu

item Function
Hotel Mode Select hotel mode ON/OFF
Initial INPUT Select input signal modes.

Set the input, when each time power is switched
on.
Selection :
Off/Analogue/DVB/AV1/AV2/AV2S/AV3/AV3S/
Comp./PC/HDMI1/HDMI2/HDMI3

• Off: give priority to a last memory. However,
Euro model is compulsorily set to TV.

• AVnS/AVnC: only Euro model selectable

• PC: selectable with VGA option

Initial POS Select programme number.

Selection :
Off/0 to 99

• Off: give priority to a last memory

Initial VOL level Adjust the volume when each time power is

switched on.
Selection/Range :
Off/0 to 63

• Off: give priority to a last memory

Maximum VOL
level

Button lock Select local key conditions.

Remote lock Select remote control key conditions.

Adjust maximum volume.
Range :
0 to 63

Selection :
Off/SETUP/MENU/All

• Off: altogether valid

• SETUP: only F-key is invalid
(Tuning guide(menu) can not be selected.)

• MENU: only F-key is invalid
(only Volume/Mute can be selected.)

• ALL: altogether invalid.

Selection :
Off/SETUP/MENU

• Off: altogether valid

• SETUP: only Setup menu is invalid

• MENU: Picture/Sound/Setup menu are invalid

12

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 con-

trol for more than 3 seconds.

6.1.2. Screen display

6.1.3. Check Point

Confirm the following parts if NG was displayed.

6.1.4. Exit

Disconnect the AC cord from wall outlet or switch off the power with the [POWER] button on the main unit.

13

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.

14

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.)

15

6.4. No Picture

16

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

17

7 Disassembly and Assembly Instructions

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.

4. Remove the PB-Board.

7.4. Remove the P-Board

Caution:

To remove P.C.B. wait 1 minute after power was off for dis­charge 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
unit.

7.3. Remove the PB-Board

1. Unlock the cable clampers to free the cable.

2. Remove the screws (×2 ).

3. Disconnect the connectors (PB8, PB33, PB35, PB36 and
PB37)

18

4. Remove the screws (×20 ) on the back side.

5. Remove the screws (×7 ).

6. Remove the molding props (×13 ).

7. Remove the P-Board.

7.5. Remove the Rear Terminal
cover

1. Remove the screws (×3 , ×2 , ×2 ).

2. Remove the Rear Terminal cover.

7.6. Remove the tuner unit

1. Unlock the cable clampers to free the cable.

2. Disconnect the connectors (A1, A2, A3, A5, A6, A7, A8,
A11, A12, A51 and A52).

3. Remove the screws (×4 ) and remove the tuner unit.

Note:

When assembling the P-Board, the position of each hole of
the insulation sheets (A and B) is set to the position of each

hole of the P-Board, then assemble them. ( marks indi­cate setting positions.)

19

7.7. Remove the A-Board

1. Remove the tuner unit. (See section 7.6.)

2. Remove the tab and remove the CI cover.

3. 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 (×2 , ×2 ) 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 (×2 , ×2 ) 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.

7.12. 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 (×3

, ×1 each) and remove the Stand brackets (L, R).

7.13. Remove the D-Board

1. Remove the tuner 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.

7.11. Remove the SS-Board

1. Unlock the cable clampers to free the cable.

2. Disconnect the connectors (SS11, SS12, SS33, SS34
and SS35).

3. Disconnect the flexible cables (SS61, SS63, SS64 and
SS66).

4. Remove the screws (×6 ) and remove the SS-Board.

21

7.14. Remove the C1-Board

1. Remove the tuner 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.

7.15. Remove the C2-Board

1. Remove the tuner 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

(×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 (×4 ) and remove the C1-Board.

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 (×4 ) 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 sec­tion 7.6.)

3. Remove the screws (×2 , ×2 ) and remove the
Front bracket.

7.17. Remove the G-Board, GS­Board and GH-Board

1. Remove the Front bracket. (See section 7.16.)

2. Remove the screws (×2 ).

11. Disconnect the connector (G51) and remove the G­Board.

7.18. Remove the Speakers

1. Disconnect the relay connectors

2. Remove the screws (×4 each) and remove the
Speaker (L, R).

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.

7.19. Remove the Plasma panel sec­tion from the Cabinet assy
(glass)

1. Remove the stand brackets (left, right) fastening screw

(×1 each).

8. Remove the GH-Board.

9. Remove the screws (×2 ) and remove the GS-Board.

10. Remove the screws (×3 ).

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.

Caution:

• Please confirm the installation place of Spacer and
Spacer Ring when you exchange the Plasma Panel, and
install Spacer and Spacer Ring in an original installation
place after exchanging the Plasma Panel.

7.20. Remove the S-Board

1. Remove the Cabinet assy. (See section 7.19.)

2. Disconnect the connector (S1).

3. Remove the screws (×2 ) and remove the S-Board
metal frame.

4. Remove the spacers and spacer rings (×6 ).

4. Remove the screws (×2 ) and remove the S-Board.

24

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.

7.22. Remove the plasma panel (fin­ished)

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 flexi­ble 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: Dynamic
PNR: OFF
Aspect: 16:9

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.

Name Test Point Voltage Volume Remarks

Vsus TPVSUS

(SS)

Ve TPVE (SS) Ve ± 1V VR16000

Vset TPVSET

(SC)

Vad TPVAD (SC) -140V ± 1V VR16600

Vscn TPVSCN

(SC)

Vda TPVDA (SS) 75V + 1V, -2V Fixed

*See the Panel label.

Vsus ± 2V VR251 (P) *

*

(SS)

330V ± 7V Fixed

(SC)

Vad+148V ± 1V 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 : Dynamic
PNR: OFF
Aspect : 16:9

3. Connect Oscilloscope to TPSC1 (SC).
Check the voltage (T2) at 100 us period on the down slop.

Test point Volume Level

T2 TPSC1 (SC) VR16602 (SC) 250 V ± 10 V

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.

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

*See the Panel label.

Caution:

Absolutely do not reduce Vsus below Ve not to damage the P.C.B.

27

8.1.4. Adjustment Volume Location

8.1.5. Test Point Location

28

9 Block Diagram

9.1. Block Diagram (1/6)

FRONT TERMINAL

G

KEY SWITCH

AV3

HEADPHONE

KEY SWITCH

Y,C , V

L,R

HP_L,R

SPEAKER(L)

SPEAKER(R)

MONITOR L,R

B/E ONLY

SOUND

PROCESSOR

FRONT END
PROCESSOR

CI SLOT

BUFFER

HDMI AUDIO

DTV AUDIO

OPTICAL OUT

RESET

HDMI I/F
RECEIVER

10bit A/D

+9V(S)

+5V(S)

+3.3V(S)

DDR2

SD CARD DATA

HSDIN
TS Parallel

CH0 DATA

DIGITAL VIDEO DATA

Peaks Lite2

DTV_V

DTV AUDIO

OPTICAL OUT

SBO2
SBI2

STB MCU

GenX5

KEYSCAN1

SUB+9V DET

SUB+5V DET

SUB+3.3V DET

SOUND SOS
(LED:12 TIMES)

ALL OFF

CLOCK GEN

SD BOOT

PANEL STB_ON

PANEL STATUS

(LED:10 TIMES)

POWER LED(R)

LOSD OUT
(for HQ1)

PAMEL SOS

RESET

TUNER SOS

REMOTE IN

AI SENSOR

FAN CONT

FAN SOS

EEPROM

FLASH

RGB_30bit

MIHO

LVDS DATA

Local 16bit OSD

to D5

A5

to D3

A3

RESET

EEPROM

IIC1

TUNER SOS DET
CIRCUIT

(LED:10 TIMES)

+9V(S)

+5V(S)

+30V(BT)

+5V(S)

+3.3V(FHD)

DCDC

FHD+3.3V

DCDC

MIHO+1.2V

+3.3V(FHD)

+1.2V(MIHO)

+3.3V(STB)

A1

+5V(S) +5V(S)

REMOTE RECEIVER

K

POWER LED
AI SENSOR

+3.3V(STB)

K1

REMOTE
RECEIVER
LED

AI SENSOR

GS

SD CARD SLOT

SD CARD

SLOT

GH

HDMI3

HDMI1

HDMI2

TUNER

A51

G51

A12

MONITOR
OUT

HDMI3 IN

AV1

AV2

PC

Y,C , V

L,R

HP_L,R

L,RCOMP

R,G,B

+3.3V(S)

HDMI
EQUALIZER

+3.3V(S)

CH0 DATA

SIF,AM

V

Y,C , V

L,R

Y,C , V

L,R

Y,PB,PR

AUDIO AMP

+5V(S)

+15V(SND)

GS52

GH11

VIDEO SW
AUDIO SW

SOUND SOS DET
CIRCUIT

(LED:12 TIMES)

SD CARD DATA

A52

+3.3V(S)

A11

+5V(S)
+3.3V(S)

L,R

MONITOR
L,R

PWM AUDIO OUT

SOUND SOS

TH-42PY80P, PZ80B/E
Block (1/6) Diagram

from P7

from

P6

F+15V

A6

+15V(SND)

+15V(FAN)

A7

+5V(STB)

F+15V

DCDC

SUB+5V

DCDC

SUB+9V

DCDC

FRC+1V

DCDC

FRC+3.3V

+5V(S)

+9V(S)

+1V(FRC)

DCDC

FRC+2.5V

DCDC

FRC+2.6V

+15V(S)

+9V(P)

+2.5V(FRC)

+2.6V(FRC)

DCDC

SUB+3.3V

DCDC
SUB+1.2V
SUB+1.8V

BT+30V

+3.3V(S)

+1.2V(S)

+1.8V(S)

+30V(BT)

DIGITAL SIGNAL PROCESSOR

A

+15V(FAN)

+15V(FAN)

A8

FAN CONT

PB8

FAN SOS

FAN POWER

FAN SOS DET
CIRCUIT

(LED:11 TIMES)

FAN CONTROL

PB

+9/7.2V

PB30
PB31
PB32
PB33

FAN_A-D

TH-42PY80P, PZ80B/E
Block (1/6) Diagram

29

9.2. Block Diagram (2/6)

(LED:7TIMES)

(LED:2TIMES)

(LED:3TIMES)

(LED:8TIMES)

(LED:5TIMES)

(LED:4TIMES)

(LED:6TIMES)

(LED

4 TIME)

(LED

7 TIMES)

(LED

6 TIMES)

(LED

8 TIME)

HOTCOLD

SU SCAN OUT (UPPER)

SCAN
DRIVER

SU11

SD11

SCAN
DRIVER

SCAN OUT (LOWER)SD

SU41 SC41

SD42

SC42

SD46 SC46

SC2

VSUS

SC-BOARD
ENEGRY RECOVERY
SOS DETECT

(LED

6 TIMES)

SC-BOARD
FLOTING PART
SOS DETECT

(LED

7 TIMES)

SOS7_SC2

SCAN CONTROL

CONTROL
PULSE

SUSTAIN
PULSE

SCAN
PULSE

VOLTAGE
GENERATOR

SC SCAN DRIVE

SOS6_SC1

+5V(P)

+15V(P)

VSUS

DATA DRIVER (RIGHT)

C1

SC20

D20

EEPROM

SOS6_SC1

SOS7_SC2

+15V(P)

+3.3V(P)

+5V(P)

+5V(P)

+15V(P)

to/from

A3,A5

PANEL MICOM

(LED:4TIMES)

+15V(P) DET

+3.3V(P) DET

+5V(P) DET

SOS6_SC1

SOS7_SC2

(LED:8TIMES)

PANEL SOS

PANEL READY

PANEL STB_ON

D3

D

(LED:6TIMES)

(LED:7TIMES)

SOS8_SS

ALL OFF

FORMAT CONVERTER,
PLASMA AI PROCESSOR

GenX6

POWER SOS

(LED:2TIMES)

(LED:3TIMES)

(LED:5TIMES)

SOS4_PS

CONTROL SIGNAL

RESET

DISCHARGE CONTROL

SOS8_SS

SUSTAIN
CONTROL

+5V(STB)

LVDS DATA

D5

+5V(P)

VIDEO DATA

C11

+5V(P)

VIDEO DATA

Vda

Vda

LVDS RX
CPG with SS
H/V SYNC CONTROL

SUB-FIELD PROCESSOR
PLASMA AI
DATA DRIVER

VIDEO DATA

VIDEO DATA

(30bit)

+5V(P)

D32

D31

+5V(P)

C12

+5V(P)

(36bit)

+5V(P)

VIDEO DATA

VIDEO DATA

(30bit)

+5V(P)

D33

+15V(P)

+15V(P)

+5V(STB)

SOS8_SS

PANEL MAIN ON

DDR

FLASH

MEMORY

DCDC

+2.5V(P)

DCDC
+3.3V(P)
+1.2V(P)

DCDC

+3.3V(STB)

RESET

SOS4_PS

+5V(P)

+5V(STB)

+15V(P)

+2.5V(P)

+3.3V(P)

+1.2V(P)

+3.3V
(STB)

POWER SUPPLY

P

P2

VSUS

SUSTAIN DRIVESS

PS SOS
(LED

to

A6,A7

D25

P7

P6

+15V(P)

F+15V

+5V(STB)

+15V(FAN)

+5V(STB)

FSTB+15V

+15V(SND)

+5V(P)

+5V(STB)

P25

4 TIME)

POWER MICOM

ON/OFF CONTROL

Vda

+15V(P)

+5V(P)

STANBY
VOLTAGE
RECTIFIER

STANBY
VOLTAGE
CONTROL

RECTIFIER

HOTCOLD

PROCESS
VOLTAGE
RECTIFIER

PROCESS
VOLTAGE
CONTROL

RECTIFIER

LINE
FILTER

P-BOARD
SOS DETECT

POWER
FACTOR
CONTROL

LINE
FILTER

SUSTAIN
VOLTAGE
RECTIFIER

SUSTAIN
VOLTAGE
CONTROL

MAIN SW1

MAIN SW2

+15V(P)

VSUS

P11

P12

Vda

SS11

SS12

SS35

Vda

VSUS

+5V(P)

SS33

SOS8_SS

SS-BOARD
SOS DETECT

(LED

ADDRESS
VOLTAGE
(VE)

SUSTAIN
PULSE

MAIN SW2

MAIN SW1

SS34

ERASE
PULSE

8 TIME)

POWER SW

P9

POWER SWITCH

S

ON

AC CORD

SOS8_SS

VIDEO DATA

SUSTAIN CONTROL

+5V(P)

C21

DATA DRIVER (LEFT)

C2

+5V(P)

SOS8_SS

SUSTAIN CONTROL SUSTAIN CONTROL

C20C10

SOS8_SS

Vda

VIDEO DATA

Vda

C25

+5V(P)

C23

+5V(P)

SUSTAIN CONTROL SUSTAIN CONTROL

SOS8_SS

S1

TH-42PY80P, PZ80B/E
Block (2/6) Diagram

DATA
DRIVER

DATA
DRIVER

DATA
DRIVER

DATA
DRIVER

DATA
DRIVER

DATA
DRIVER

DATA
DRIVER

DATA
DRIVER

30

DATA
DRIVER

DATA
DRIVER

DATA
DRIVER

DATA
DRIVER

DATA
DRIVER

DATA
DRIVER

DATA
DRIVER

TH-42PY80P, PZ80B/E
Block (2/6) Diagram