Panasonic GPH11DE, TH-37PV8PA, TH-37PX8BA, TH-37PX8EA, TH-42PV8PA Service Manual

...

ORDER NO.PCZ0808098CE

Plasma Television

Model No. TH-37PV8PA

TH-37PX8BA TH-37PX8EA TH-42PV8PA TH-42PX8BA TH-42PX8EA

GPH11DE Chassis

1 Safety Precautions

1.1. General Guidelines

1. When servicing, observe the original lead dress. If a short circuit is found, replace al l 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.: U

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.

= 1.0 V,

= 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

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

and U2, does not exceed the following values:

Figure 1

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 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 compon ent 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 al uminum 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).

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 issue s. 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 befo re 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 p urchase. 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.

3 Service Navigation

3.1. Service Hint (42 inch)

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, MPU, HDMI Interface Peaks Lite 2p Format Converter, Plasma AI, Sub-Field Processor

K Remote receiver, Power LED GS SD Card Slot S Power Switch

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

G Key Switch, Front Terminal

3.2. Service Hint (37 inch)

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, MPU, HDMI Interface Peaks Lite 2p Format Converter, Plasma AI, Sub-Field Processor

K Remote receiver, Power LED S Power Switch

C2 Data Driver (Lower Left)

SC Scan Drive SM Scan out SS Sustain Drive

G Key Switch, Front Terminal

GS SD Card Slot

3.3. Applicable signals

4 Specifications

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

Average use 235 W (37 inch)

255 W (42 inch)

Standby condition 0.7 W (Without monitor out recording)

20 W (With monitor out recording)

Plasma Display panel

Aspect Ratio 16:9 Visible screen size 94 cm (diagonal) (37 inch)

Number of pixels 737,280 (1,024 (W) × 720 (H)) [3,072 × 720 dots] (37 inch)

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

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

Aerial - Rear UHF (BA model), VHF/UHF (EA/PA 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

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

Others

HDMI1 / 2 TYPE A Connectors This TV supports “HDAVI Control 3” function.

Output

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

Dimensions (W × H × D) 917 mm × 665 mm × 327 mm (With Pedestal) (37 inch)

Mass 24.0 kg Net (With Pedestal) (37 inch)

819 mm (W) × 457 mm (H) (37 inch) 106 cm (diagonal) (42 inch) 922 mm (W) × 518 mm (H) (42 inch)

786,432 (1,024 (W) × 768 (H)) [3,072 × 768 dots] (42 inch)

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)

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

1.0 V [p-p] (including synchronization)

, P

917 mm × 617 mm × 92.5 mm (TV only) (37 inch) 1,020 mm × 727 mm × 327 mm (With Pedestal) (42 inch) 1,020 mm × 679 mm × 92.5 mm (TV only) (42 inch)

22.0 kg Net (TV only) (37 inch)

27.5 kg Net (With Pedestal) (42 inch)

25.5 kg Net (TV only) (42 inch)

± 0.35 V [p-p]

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.

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 ( - )

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.

5.2. Service tool mode

5.2.1. How to access

1. Select [SRV-T OOL] 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 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 positi on, 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 or switch off the power with the [POWER] button on the main unit.

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] : AV (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 or switch off the power with the [POWER] button on the main unit.

4. 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/Analog/DVB/AV1/AV2/AV2S/COMPONENT/ HDMI1/HDMI2

• 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

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] b utton 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 ma in 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.

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.

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.)

6.4. No Picture

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

7 Disassembly and Assembly Instructions

7.1. Remove the rear cover

1. See Service Hint (Section 3)

7.2. 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 connectors (P2, P6, P7, P9, P11, P12 and P25).

3. Remove the screws (×10 ) and remove the P-Board.

7.4. Remove the Tuner unit

1. Unlock the cable clampers to free the cable.

2. Disconnect the connectors (A1, A7, A12, A20, A25, A31, A32, A51, A52).

3. Remove the screws (×5 ) and remove the tuner unit.

7.5. Remove the GS-Board

1. Disconnect the connector (GS52).

2. Remove the screw (×1 ) and remove the rear SD bracket.

7.3. Remove the rear terminal cover

1. Remove the screws (×2 , ×4 ).

2. Remove the rear terminal cover.

3. Remove the screw (×1 ) and remove the GS-Board.

7.6. Remove the A-Board

1. Remove the tuner unit. (See section 7.4. )

2. Remove the tab and remove the CI cover.

7.7. Remove the SU-Board (42 inch)

1. Remove the flexible cables (SU1B, SU2B, SU3B and SU4B) 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.

3. Remove the screws (×7 ) and remove the A-Board.

7.8. Remove the SM-Board (37 inch)

1. Remove the flexible cables (SM1, SM2, SM3, SM4, SM5 and SM6).

2. Remove the bridge connector (SM41, SM42 and SM46).

3. Remove the screws (×3 , ×4 ) and remove the SM- Board.

7.9. Remove the SD-Board (42 inch)

1. Remove the flexible cables (SD1B, SD2B, SD3B and SD4B) 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.

7.11. Remove the SS-Board

1. Unlock the cable clampers to free the cable.

2. Disconnect the connectors (SS11, SS12, SS23 and SS34).

3. Disconnect the flexible cables (SS53A and SS56A) (42 inch)/(SS53 and SS56) (37 inch).

4. Remove the molding prop (×1 ).

5. Remove the screws (×5 ) and remove the SS-Board.

7.10. Remove the SC-Board

1. Remove the SU-Board, SM-Board and SD-Board. (See section 7.7., 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 (×6 ) 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 flat surface such as a table (covered) with the plasma panel surface facing downward.

2. Remove the stand brackets (left, right) fastening screws (×4 each) and remove the stand brackets (left, right).

7.13. Remove the C1-Board

1. Remove the tuner unit. (See section 7.4. )

2. Unlock the cable clampers to free the cable.

3. Remove the flexible cables holder fastening screws (×8 ).

4. Disconnect the flexible cables (CB1, CB2, CB3 and CB4).

5. Disconnect the flexible cables (C10 and C11).

6. Remove the screws (×4 ) and remove the C1-Board.

42 inch

37 inch

7.15. Remove the front bracket

1. Disconnect the connector (A51). (See section 7.4.)

2. Remove the screws (×4 ) and remove the front bracket.

7.14. Remove the C2-Board

1. Remove the tuner unit. (See section 7.4. )

2. Unlock the cable clampers to free the cable.

3. Remove the flexible cables holder fastening screws (×8 ).

4. Disconnect the flexible cables (CB5, CB6, CB7 and CB8).

5. Disconnect the flexible cables (C20 and C21).

6. Disconnect the connector (C23).

7. Remove the screws (×4 ) and remove the C2-Board.

42 inch

7.16. Remove the G-Board

1. Remove the front bracket. (See section 7.15.)

2. Remove the screws (×2 ) and remove the front shield front.

3. Remove the screws (×3 ) and disconnect the connector (G51).

4. Remove the G-Board.

7.17. Remove the speaker L, R

1. Disconnect the connector (A12). (See section 7.4.)

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

7.18. Remove the S-Board

1. Remove the stand brackets. (See section 7.12.)

2. Remove the screws (×2 ).

3. Disconnect the connector (S1).

7.19. Remove the K-Board

1. Remove the S-Board. (See section 7.18.)

2. Unlock the cable clampers to free the cable.

3. Remove the screws (×2 ).

4. Disconnect the connectors (K1) and remove the K-Board.

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

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

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

2. Remove the cabinet assy and the plasma panel fastening screws (×7 ).

3. For leaving the plasma panel from the front frame, pull the bottom of the cabinet assy forward, lift, and remove.

5. Remove the BC hook (left, right).

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

Caution:

• Please confirm the installation of BC hook (Left, right), Spacer and Spacer Ring when you exchange the Plasma Panel, and install BC hook (Left, right), Spacer and Spacer Ring in an original installation place after exchanging the Plasma Panel.

7.21. Replace 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 (×16) 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.

8 Measurements and Adjustments

8.1. Driver Set-up

8.1.1. Item / Preparation

1. Input a white signal to plasma video input.

2. Set the picture controls as foll o w s. 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=-149V, Voltage of Vscn is -4V ±4V.

8.1.2. 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 (SS) * Vset TPVSET

(SC) Vad TPVAD (SC) -149V ± 1V VR16600 (SC) Vscn TPVSCN

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

*See the Panel label.

Vsus ± 2V R628 (P) *

320V +7V, -9V Fixed

Vad+145V ± 4V Fixed

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 R628 (P) * SC Board Vad TPVAD (SC) -149V ± 1V VR16600 (SC) SS Board Ve TPVE (SS) Ve ± 1V VR16000 (SS) *

*See the Panel label.

Caution:

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

8.1.4. Adjustment Volume Location

8.1.5. Test Point Location

9 Block Diagram

HDMI2

HDMI Rx A/D CONV.

HDMI1

SD CARD I/F

+3.3V(S)

GS52

A52

LED/RMT

REMOTE

RESET

LED

L,R

+3.3V(STB)

+5V(S)

+3.3V(S)

G51

Y,PB,PR

DIGITAL AUDIO OUT

PWM

AUDIO AMP

Dig/Ana Tuner

MONITOR L,R

+1.8V(S)

SUB+3.3V

SIF,AM

SUB+1.2V

HP L/R

+3.3V(S)

DTV

DCDC

KEY1

+15V(S)

KEY SCAN

DCDC

+1.2V(S)

SUB+1.8V

FRONT TERMINAL

Y,C , V

IECOUT

R_LED_ON

STANDBY MPU

SD CARD SLOT

COMP

A51

from

L,R

SD BOOT

SBO2 SBI2

(MAIN MPU+VIDEO PROCESSOR)

Peaks Lite2p

+3.3V(STB)

GenX5

+5V(S)

RESET

REMOTE

EEPROM

SOUND+15V

SOUND_SOS

BT+30V

+30V(BT)+9V(P)

KEY

L,R

Y,C , V

OPT

HDMI

L,R

A12

AV3

VIDEO AUDIO SWITCH

HEADPHONE

AV1

AUDIO PROCESSOR

SPEAKER(R)

SOUND SOS

AV2

SPEAKER(L)

Y,C , V

PANEL_STB_ON

PANEL SIDE SOS

PANEL_STATUS

SOUND SOS DET

DIGITAL MAINA

SD DATA

DTV

IEC OUT

Digital Video Signal

LVDS

SERIAL

L,R

Y,C , V

RESET

IIC1

DDR

+5V(P)

+3.3V(P) DET MAIN ON/OFF

POWER SOS

+3.3VSTB)

CPG with SS

FLASH MEMORY

+5V(P)

SUSTAIN CONTROL

+15V(P) DET

+5V(STB)

A32

+15V(P)

POWER_SOS

+15V(P)

A25

MPU

DCDC

Plasma AI

H/V Sync Control

+5V(P)

+1.2V(P)

Sub Filed Processor

+3.3V(P)

+5V(P) DET

+3.3V(P)

+1.2V(P)

SOS6_SC1

PANEL STATUS

EEPROM

+2.5V(P)

Ready,ALARM

+3.3V(STB)

SOS8_SS

SOS7_SC2

+2.5V(P)

DCDC

LVDS Rx

PANEL STB_ON

LVDS

FPGA

+3.3V(P)

VIDEO DATA

+15V(P)

SOS8_SS

A31

+5V(P)

VIDEO DATA

+5V(P)

+15V(P)

A20

to/from

P25

C11

to/from

C21

+5V(STB)

+15V(F_STB)

+15V(SOUND)

SC20

to/from

SCAN CONTROL

L,R

ALL OFF

DDR2

CLOCK GEN

+3.3V(M)

SUB+5V SENSE

+5V(S)

SUB+5V SENSE

MAIN+3.3V SENSE

MAIN+9V SENSE

+9V(M)

+3.3V(S)

DTV+9V SENSE

+9V(S)

Thermal sensor

OFDM

IFD1/2

L,R (ATV or DTV)

MONITOR OUT

G_LED_ON

PD2-M

Dischrge Control

Genx6

DVB_CVBS

Digital

FOR FACTORY USE

A33

A35

FOR FACTORY USE

A34

FOR FACTORY USE

BA/EA ONLY

CI SLOT

BUFFER

HSDIN TS Parallel

EEPROM

(LED 11TIMES)(LED 12TIMES)

(LED

3TIMES)

(LED

7TIMES)

(LED

5TIMES)

(LED

8TIMES)

(LED

2TIMES)

(LED

6TIMES)

(LED

4TIMES)

TH-37/42PV8PA, PX8BA/EA

Block (1/7) Diagram

TH-37/42PV8PA, PX8BA/EA Block (1/7) Diagram

9.1. Block (1/7) Diagram

9.2. Block (2/7) Diagram (42 inch)

AC CORD

Vda

+5V(P)

C11

MAIN SW1

C10

P12

SS34

MAIN SW2

SOS8_SS

+5V(P)

SOS7_SC2

C20

+5V(STB)

SS12

A20

+15V(P)

MAIN SW1

+5V(P)

C23

+5V(P)

VSUS

Vda

SS23

MAIN SW1

MAIN SW2

SC41

SC42

VSUS

SD42

VdaVda

+15V(P)

SC2

SC20

SS11

MAIN SW2

VSUS

+5V(P)

C21

P11

P-BOARD SOS DETECT

+5V(P)

VSUS

SU11

+15V(P)

Main Block(Tuner side)

SD11

SU41

A31

A32

SOS8_SS

Vda

SOS6_SC1

SOS8_SS

POWER SUPPLY

F+15V

SUSTAIN VOLTAGE CONTROL

SUSTAIN VOLTAGE RECTIFIER

PROCESS VOLTAGE RECTIFIER

POWER FACTOR CONTROL

PROCESS VOLTAGE CONTROL

STANDBY VOLTAGE RECTIFIER

RELAY

LINE FILTER

RECTIFIER

STANDBY VOLTAGE CONTROL

ADDRESS VOLTAGE (VE)

ERASE PULSE

SUSTAIN PULSE

SS-BOARD SOS DETECT

SUSTAIN CONTROL

SUSTAIN CONTROLSUSTAIN CONTROL

VIDEO DATA

SC-BOARD FLOATING PART SOS DETECT

SC-BOARD ENERGY RECOVERY SOS DETECT

+15V(P)

+5V(P)

SCAN CONTROL

DATA DRIVER (RIGHT)

DATA DRIVER (LEFT)

SUSTAIN DRIVESS

SC SCAN DRIVE

SU SCAN OUT (UPPER)

SCAN OUT (LOWER)SD

VOLTAGE GENERATOR

CONTROL PULSE

SCAN PULSE

SUSTAIN PULSE

SCAN DRIVER

DATA DRIVER

+15V(P)

+5V(P)

P25

POWER MICOM

A25

PS SOS

ON/OFF CONTROL

SD46

SCAN DRIVER

SC46

F+15V

+15V(SND)

+5V(STB)

POWER SWITCH

POWER SW

COLD HOT

(LED

8 TIME)

(LED

6 TIMES)

(LED

7 TIMES)

(LED

4 TIME)

TH-42PV8PA, PX8BA/EA

Block (2/7) Diagram

TH-42PV8PA, PX8BA/EA Block (2/7) Diagram

9.3. Block (3/7) Diagram (37 inch)

SS34

SC42

+5V(P)

VSUS

SOS6_SC1

SM42

Vda

C21

C10

SOS8_SS

+15V(P)

SS12

SC2

SOS7_SC2

SC41

C20

Vda

Main Block(Tuner side)

SC20

SM41

+5V(P)

A31

SS23

A32

C23

SS11

A20

VSUS

C11

+5V(STB)

VSUS

MAIN SW2

Vda

VSUS

RELAY

LINE FILTER

RECTIFIER

STANDBY VOLTAGE CONTROL

P11

P-BOARD SOS DETECT

MAIN SW1

+5V(P)

Vda

+15V(P)

F+15V

SUSTAIN VOLTAGE CONTROL

SUSTAIN VOLTAGE RECTIFIER

PROCESS VOLTAGE RECTIFIER

POWER FACTOR CONTROL

PROCESS VOLTAGE CONTROL

P12

STANDBY VOLTAGE RECTIFIER

ADDRESS VOLTAGE (VE)

ERASE PULSE

+15V(P)

MAIN SW1

Vda

MAIN SW1

MAIN SW2

SUSTAIN PULSE

SOS8_SS

SS-BOARD SOS DETECT

SUSTAIN CONTROL

+5V(P)

MAIN SW2

SUSTAIN CONTROL

DATA DRIVER

VIDEO DATA

Vda

SOS8_SS

+5V(P)

SUSTAIN CONTROL

+5V(P)

VIDEO DATA

SC-BOARD FLOATING PART SOS DETECT

SC-BOARD ENERGY RECOVERY SOS DETECT

POWER SW

VOLTAGE GENERATOR

CONTROL PULSE

SCAN PULSE

SCAN CONTROL

SUSTAIN PULSE

SCAN DRIVER

DATA DRIVER (RIGHT)

DATA DRIVER (LEFT)

POWER SUPPLY

SUSTAIN DRIVESS

POWER SWITCH

SC SCAN DRIVE

SM SCAN OUT

+15V(P)

POWER MICOM

PS SOS

ON/OFF CONTROL

+5V(P)

P25

SCAN DRIVER

SM46 SC46

+5V(STB)

+15V(SND)

F+15V

AC CORD

(LED 8 TIME)

(LED

6 TIMES)

(LED

7 TIMES)

COLD HOT

(LED

4 TIME)

TH-37PV8PA, PX8BA/EA

Block (3/7) Diagram

TH-37PV8PA, PX8BA/EA Block (3/7) Diagram

9.4. Block (4/7) Diagram

MAIN9V

SUB3.3VSUB5V

SOUND15V

SUB3.3V

SUB5V

STB5V

S_15V

STB5V

F15V

MAIN9V

SUB5V

DTV9V

D5521

D5522

D5612

SUB3.3V

SUB1.8V

SUB1.2V

MAIN5V

MAIN3.3V

D2017

D2014

D1107

SUB3.3V

DTV9V

STB3.3V

STB5V

SUB5V

MAIN9V

BT30V

AV1

AV2

JK3002

JK3003

AV1_V

AV1_RED

AV1_GREEN

AV1_BLUE

AV1_LIN

AV1_RIN

AV1_VOUT

AV1_LOUT

AV1_ROUT

AV2_V_Y

AV2_RED_C

AV2_GREEN

AV2_BLUE

AV2_ROUT

AV2_LIN

AV2_RIN

AV2_VOUT

AV2_LOUT

A51

415210 139326

G51

HEADPHONE

AV3_L

AV3_C

CONTROL BUTTON

AV3_V

AV3

HP_L

10 15

AV3_Y

KEY1

HP_R

AV3_R

JK3100

AUDIO IN/OUT

YPBPR

ROUT

LOUT

LIN

RIN

IC3001

AV SW

TV/DTV

AV1

V,R,G,B

L,R

V,Y,C,R,G,B

AV2

L,R

Y,PB,PR

COMP

L,R

DVB_CVBS

L,R

V,Y, C

AV3

L,R

AV1_VOUT

AV2_VOUT

CVBS/S/YUV /RGB(PC)

MAIN

TU8301

SUB+5V

SIF,AM

BT+30V

Dig/Ana Tuner

IFD1/2

L,R

IC2106

AUDIO PROCESSOR

L,R

SIF,AM

TV_LR/DTV_LR

AV1_L,ROUT

AV2_L,ROUT

L,ROUT

HP L,R

IC2012

HP AMP

IC2013

L(+)

A12

SOS DET

R(-)

AUDIO AMP

+15V

IC2301

SPEAKER OUT

R(+)

SPEAKER L,R

L(-)

SP L,R

IIC2

+3.3V

IC2008

+1.8V

IC2107

+1.8V

+3.3V

IIC2

PWM

HEADPHONE

DTV

HDMI Audio

+1.8V

HDMI

Digtal Video Signal

IC4511

+3.3V

+5V(HDMI)

HDMI_CEC

CEC

IC4513

+3.3V

5V<->3.3V

Digtal Audio Signal

DECORD

DDC IIC

+5V(HDMI)

+1.8V

IIC1

HDMI PROCESSOR

HDMI2

HDMI Rx/AD CONV.

IC4514

A/D

DDC_IIC1

TMDS

IC4515

AUDIO

DDC_IIC0

CEC

IC4512

LEVEL SHIFT

VIDEO

5V<->3.3V

DDCB_IIC

+5V

HDMI1

+1.8V

Analog video signal

DDCC_IIC

DET2

LEVEL SHIFT

Q4503

+1.8V

DDC IIC

HDMI1

IC4510

Q4502

TMDS

HDMI2

+5V

DET1

JK4500

JK4501

TUNER_SUB_ON

ECO_ON

STB5V

+15V_S

F+15V

+15V_S

F+15V

+15V_S

P6, P7

IC5401

IC5400

+5V

SUB+5V

+9V

SUB+9V

SHORT SOS

BT+30V

Q5522

Norm Low Ab

high

DTV+9V

SUB+5V

+1.8V

IC5600

IC5601

Norm Low Ab

high

Q5606,07

SUB+3.3V

F+15V DET

+1.2V

+3.3V

+5V

+9V +5V

IC5660

RESET

XRST

SOUND SOS

Q2022

SOS Low

KEY1

PANEL STATUS (READY)

XRST

PANEL STB_ON

HDMI_CEC_PU_ON

HDMI_CEC

IC1100

STANDBY_MPU

SOUND_SOS

STB+3.3V

IIC

PANEL SOS (ARARM)

+5V(HDMI) DET1,2,3

TUNER_SUB_ON

GenX5

SOS

ECO_ON

SUB3.3V_SENSE

MAIN3.3V_SENSE

SUB5V_SENSE

MAIN9V_SENSE

DTV_9V_SENSE

G_LED_ON

RMIN

R_LED_ON

EEPROM

IC1101

SBI2 SBO2

IIC3

DIGITAL DEMODULATOR

OFDM

IC8301

1.8V

3.3V

IC8302

+1.8V

IIC_TUNER

IIC2

IIC_TUNER

XRST

STB_RST

IC1102

BUFFER

IC2403

STB3.3V

STB_RESET

STB +3.3V

+9V

BT30V

Q2027

STB_RST

SD BOOT

IIC1

TEMP SENSOR

IC4800

IIC SW

IC4811

BA/EA ONLY

(LED 3TIMES)

(+5.6V)

(LED

12TIMES)

(LED 10TIMES)

(LED

12TIMES)

TH-37/42PV8PA, PX8BA/EA

Block (4/7) Diagram

TH-37/42PV8PA, PX8BA/EA Block (4/7) Diagram

A-BOARD

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