Panasonic TH-46PZ81E Service manual

ORDER NO. PCZ0805045CE

Plasma Television

Model No. TH-46PZ81E

GPF11DE Chassis

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.: 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 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).

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.

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 Termin a l , AV Sw i t c h Digital Signal Processor, Micon, HDMI Interface Peaks Lite 2p

D Format Converter, Plasma AI, Sub-Field Processor SS Sustain Drive K Remote receiver, Power LED GS SD Card Slot S Power Switch G Front Terminal, Key Switch

HC PC IN, Audio out PA Fan control

C2 Data Driver (Lower Center) C3 Data Driver (Lower Left) SC Scan Drive SU Scan out (Upper) SD Scan out (Lower)

3.2. Applicable signals

4 Specifications

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

Average use 470 W Standby condition 0.4 W (Without monitor out recording)

20 W (With monitor out recording)

Plasma Display panel

Aspect Ratio 16:9 Visible screen size 117 cm (diagonal)

1,019 mm (W) × 573 mm (H)

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

······ (compressed)

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

Receiving Systems / Band name

PAL B, G, H, I, SECAM B, G, SECAM L/L’ :

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.

Aerial - Rear VHF/UHF Operating Conditions

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

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)

, P

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

Others

HDMI1 / 2 / 3 TYPE A Connectors HDMI™ (Version 1.3 with x.v.Color™)

This TV supports “HDAVI Control 3” function.

PC HIGH-DENSITY D-SUB 15PIN R,G,B/0.7 V[p-p] (75 Ω)

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

Card slot SD Card slot × 1

Output

AUDIO L - R RCA PIN Type × 2 0.5 V [rms] (high impedance) DIGITAL AUDIO OUT PCM / Dolby Digital, Fiber optic

Dimensions (W × H × D) 1,158 mm × 800 mm × 387 mm (With Pedestal)

1,158 mm × 747 mm × 99.7 mm (TV only)

Mass 40.0 kg Net (With Pedestal), 35.0 kg Net (TV only)

± 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, EN55022, EN55024.

• Pedestal : ST-42R3-W2/ST-50R3-W2 (For safety approval)

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-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.

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

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.

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 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.

7.3. Remove the PA-Board

1. Unlock the cable clampers to free the cable.

2. Remove the screws (×2 ).

3. Disconnect the connectors (PA5, PA6, PA8, PA33, PA35, PA36 and PA37)

4. Remove the PA-Board.

4. Remove the screw (×1 ) on the back side.

5. Remove the Fan.

7.4. Remove the P(AC)-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 (P9, P51, P53 and P55).

3. Remove the screws (×6 ) and remove the P(AC)Board.

7.5. Remove the P(MAIN)-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, P11, P12, P25, P52, P54 and P56).

3. Remove the screws (×6 ) and remove the P(MAIN)Board unit.

7. Remove the P(MAIN)-Board.

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.)

4. Remove the screws (×25 ) on the back side.

5. Remove the screws (×6 ).

6. Remove the molding props (×9 ).

7.6. Remove the Rear Terminal cover

1. Remove the screws (×3 , ×2 , ×2 ).

2. Remove the Rear Terminal cover.

7.7. Remove the tuner unit

1. Unlock the cable clampers to free the cable.

2. Disconnect the connectors (A1, A3, A5, A6, A7, A8, A9, A11, A51, A53 and H12).

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

7.8. Remove the A-Board

1. Remove the tuner unit. (See section 7.7.)

2. Remove the tab and remove the CI cover.

3. Disconnect the bridge connectors (A12, A13 and A14).

4. Remove the screws (×8 ) and remove the A-Board.

7.9. Remove the HC-Board

1. Remove the tuner unit (see section 7.7.)

2. Disconnect the bridge connectors (A12, A13 and A14).

3. Remove the screws (×2 ) and remove the HC-Board .

7.10. 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 molding prop (×1 ).

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

7.12. Remove the SC-Board

1. Remove the SU-Board and SD-Board. (See section 7.10. and 7.11.)

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 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 molding prop (×1 ).

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

7.13. 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.

7.14. 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 (×5 each) and remove the Stand brackets (L, R).

7.16. Remove the C1-Board

1. Remove the Tuner unit. (See section 7.7.)

2. Remove the Stand bracket R. (See section 7.14.)

3. Remove the DD-Heat-sink fastening screws (×12 ).

4. Remove the DD-Heat-sink (×6).

5. Disconnect the flexible cables (CB1, CB2, CB3, CB4, CB5 and CB6).

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

7. Remove the screws (×5 ) and remove the C1-Board.

7.15. Remove the D-Board

1. Remove the Tuner unit. (See section 7.7.)

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.

7.17. Remove the C2-Board

1. Remove the Tuner unit. (See section 7.7.)

2. Remove the stand bracket L. (See section 7.14.)

3. Remove the DD-Heat-sink fastening screws (×10 ).

4. Remove the DD-Heat-sink (×5).

5. Disconnect the flexible cables (CB7, CB8, CB9, CB10 and CB11).

6. Disconnect the flexible cables (C20, C21, C22 and C26).

7. Remove the screws (×5 ) and remove the C2-Board.

7.18. Remove the C3-Board

1. Remove the DD-Heat-sink fastening screws (×8 ).

2. Remove the DD-Heat-sink (×4).

3. Disconnect the flexible cables (CB12, CB13, CB14 and CB15).

4. Disconnect the flexible cable (C36).

5. Disconnect the connectors (C33 and C35).

6. Remove the screws (×4 ) and remove the C3-Board.

7.20. Remove the G-Board

1. Remove the Front bracket. (See section 7.19.)

2. Remove the screws (×2 ).

3. Remove the screws (×3 ).

4. Remove the Front shield case front.

7.19. Remove the Front bracket

1. Unlock the cable clampers to free the cable.

2. Disconnect the connectors (A9, A11, A51 and A53). (See section 7.7.)

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

5. Remove the screws (×2 ).

6. Remone the Front shield top.

7. Remove the screws (×2 ).

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

9. Disconnect the connector (GH11) and remove the GHBoard.

10. Remove the screw (×1 ).

11. Disconnect the connector (GS09) and remove the GSBoard.

7.21. Remove the Speakers

1. Disconnect the relay connectors

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

2. Remove the cabinet assy and the plasma panel fastening

screws (×8 , ×6 ).

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

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

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

(×1 each).

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

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.

7.23. Remove the S-Board

1. Remove the Cabinet assy. (See section 7.22.)

2. Disconnect the connector (S1).

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

7.24. Remove the K-Board

1. Remove the Cabinet assy. (See section 7.22.)

2. Remove the S-Board. (See section 7.23.)

3. Remove the screws (×2 ).

4. Disconnect the connector (K1) and Remove the K-Board.

7.25. 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, C2-Board and the C3-Board, connect the flexible cables (×15) from the plasma panel to the C1-Board, C2-Board and the C3-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.

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

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 5V ±4V.

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+145V ± 4V Fixed

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.

8.1.4. Adjustment Volume Location

8.1.5. Test Point Location

9 Block Diagram

(LED:12 TIMES)

(LED:11 TIMES)

(LED:12 TIMES)

(LED:11 TIMES)

(LED:10TIMES)

BT+30V

+9V(S)

+3.3V(STB)

+30V(BT)

STB+3.3V

+5V(STB)

+5V(S)

Y,PB,PR

L,R

Y,C , V

AV1

AV2

Y,C , V

AV3

DTV_V

F+15V

FAN CONTROL

CH0 DATA

FAN SOS

HDMI2

DIGITAL SIGNAL PROCESSOR

POWER LED

SIF,AM

CI MaX

REMOTE RECEIVER

+5V(STB)

HSDIN TS Parallel

+5V(S)

AUDIO SW

EEPROM

FLASH

to D3

+15V(SND)

PA33

+1.8V(GC6)

MONITOR OUT

PANEL STB_ON

FRC+3.3V

SD BOOT

PA37

FRC+1V

+3.3V(S)

DCDC

CH0 DATA

FRONT TERMINAL

L,R

+1V(FRC)

REMOTE IN

L,R

DCDC

RESET

DCDC

L,R

+9/7.2V

FRC+2.5V

DCDC

L,R

KEY SWITCH

COMP

FRC+2.6V

FAN SOS DET

+2.5V(FRC)

LVDS DATA

DCDC

MIHO

+2.6V(FRC)

A11

OPTICAL OUT

G51

REMOTE RECEIVER

+3.3V(S)

CI SLOT

SOUND SOS

HDMI I/F RECEIVER

POWER LED(R)

+3.3V(MIHO)

L,R

MIHO+3.3V

SOUND SOS

DCDC

DTV AUDIO

FAN POWER

+5V(S)

PA35

Y,C , V

+1.2V(MIHO)

PANEL STATUS

MIHO+1.2V

HDMI EQUALIZER

CIRCUIT

DCDC

VIDEO SW

+3.3V(STB)

SOUND

GC6+1.2V

RESET

EEPROM

DDR2

+5V(S)

DTV AUDIO

AI SENSOR

STB MCU

FAN CONT

HDMI3 IN

FAN_A-D

10bit A/D

SBO2 SBI2

Peaks Pro

CLOCK GEN

TUNER

GC6+1.8V

IIC1

Y,C , V

+1.2V(GC6)

RESET

FAN SOS

+3.3V(S)

HDMI AUDIO

+5V(S)

FRONT END PROCESSOR

GenX5

+3.3V(STB)

HDMI3

+15V(S)

to D5

+15V(FAN)

PA36

SUB+3.3V DET

MONITOR L,R

LED

KEY SWITCH

PAMEL SOS

KEYSCAN1

SUB+5V DET

from P7

A51

AI SENSOR

+15V(FAN)

PROCESSOR

HDMI1

SUB+9V DET

GH11

+9V(S)

FAN CONT

PA8

ALL OFF

OPTICAL OUT

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

AI SENSOR

HEADPHONE

HP_L,R

A6 PA6

PA5

+15V(FAN)

+15V(STB)

+9V(S)

+5V(S)

DCDC SUB+5V SUB+9V

to P6

+15V(STB)

+9V(S)

+5V(S)

+15V(SND)

SLOT

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

SD CARD SLOT

SD CARD

AUDIO AMPH12

SP(L)

SP(R)

HC13

+15V(SND)

SOUND SOS DET CIRCUIT

HC12

OPTICAL

OUT

AUDIO

R,G,B

PC IN/AUDIO OUT

TEMP SENSOR

HC14

+3.3V(S)

+3.3V(M)

+5V(STB)

+15V(SND)

+3.3V(S)

GC6 FRC

DDR SDRAM

MUX

A12

A13

SWITCH

+9V(M)

MAIN+9V

+9V(S)

DCDC

+3.3V(GC6)

GC6+3.3V

+5V(S)

+9V(MAIN)

MAIN+9V DET

MAIN+3.3V DET

+3.3V(MAIN)

TUNER SOS DET CIRCUIT

TUNER SOS +5V(S)

+9V(S)

+30V(BT)

A14

OPTICAL OUT

PWM AUDIO OUT

+15V(SND)

+3.3V(S)

GC3FS

DTV_MAIN

OSD_16bit

SUB+1.2V

SUB+1.8V

DCDC

+1.8V(S)

+1.2V(S)

+3.3V(S)

+15V(S)

SUB+3.3V

DCDC

+9V(S)

SWITCH

+3.3V(M)

MAIN+3.3V

DDR SDRAM

HOST

USB

PCI BUS

GS09

CONV.

SD-USB

(LED:12 TIMES)

(LED:11 TIMES)

(LED:12 TIMES)

(LED:11 TIMES)

(LED:10TIMES)

TH-46PZ81E Block (1/6) Diagram

9.1. Block Diagram (1/6)

9.2. Block Diagram (2/6)

+5V(P)

VSUS

SD11

SD42

D20

SOS7_SC2

+15V(P)

FSTB+15V

P12

SS12

to/from

P11

D25

SC2

SU11

D31

SS35

+15V(P)

Vda

VSUS

SS11

VSUS

+15V(P)

SU41 SC41

+5V(STB)

SC42

SCAN DRIVER

SS34

D33

A3,A5

SS33

VSUS

P25

SC20

D32

SOS6_SC1

+5V(STB)

+15V(P)

+5V(P)

VSUS

+5V(P)

Vda

+5V(P)

SOS8_SS

+5V(P)

SOS8_SS

SUSTAIN PULSE

SCAN PULSE

VOLTAGE GENERATOR

CONTROL PULSE

SC-BOARD FLOTING PART SOS DETECT

SC-BOARD ENEGRY RECOVERY SOS DETECT

+3.3V(P)

SOS7_SC2

+3.3V(STB)

SOS8_SS

VIDEO DATA

RESET

SOS6_SC1

+2.5V(P)

+5V(P)

+5V(STB)

PANEL STB_ON

+15V(P)

+5V(P) DET

POWER SOS

(36bit)

(30bit)

+15V(P)

+5V(P)

+3.3V(P) DET

+3.3V(P)

PANEL MICOM

SOS8_SS

+5V(P)

SOS7_SC2

RESET

+15V(P)

PANEL READY

DCDC

DDR

FLASH

+5V(STB)

VIDEO DATA

+1.2V(P)

+3.3V(P)

SUSTAIN CONTROL

CONTROL SIGNAL

(STB)

+2.5V(P)

+15V(P) DET

GenX6

+5V(STB)

DCDC

PANEL SOS

+15V(P)

EEPROM

SOS4_PS

+5V(P)

+3.3V

+5V(P)

+1.2V(P)

SOS8_SS

+5V(P)

MEMORY

SOS6_SC1

DCDC

SOS4_PS

ALL OFF

PANEL MAIN ON

VIDEO DATA

ADDRESS VOLTAGE (VE)

SOS8_SS

ERASE PULSE

MAIN SW1

SUSTAIN PULSE

SUSTAIN CONTROL

+5V(P)

MAIN SW2

SS-BOARD SOS DETECT

PS SOS

P-BOARD SOS DETECT

SUSTAIN VOLTAGE RECTIFIER

RECTIFIER

STANBY VOLTAGE CONTROL

SUSTAIN VOLTAGE CONTROL

ON/OFF CONTROL

LINE FILTER

RECTIFIER

STANBY VOLTAGE RECTIFIER

PROCESS VOLTAGE CONTROL

PROCESS VOLTAGE RECTIFIER

POWER MICOM

POWER FACT OR CONTROL

SCAN CONTROL

VIDEO DATA

SUSTAIN CONTROL

VIDEO DATA

SUSTAIN CONTROL

AC CORD

SCAN OUT (UPPER)SU

POWER SUPPLY

SUSTAIN DRIVESS

SC SCAN DRIVE

FORMAT CONVERTER, PLASMA AI PROCESSOR

SCAN OUT (LOWER)

MAIN SW1

MAIN SW2

PA5,A7

+5V(STB)

+15V(FAN)

FSTB+15V

+15V(SND)

DATA DRIVER

LVDS DATA

H/V SYNC CONTROL

DISCHARGE CONTROL

PLASMA AI

CPG with SS

SUB-FIELD PROCESSOR

LVDS RX

SD46 SC46

SCAN DRIVER

DATA DRIVER

VIDEO DATA

SUSTAIN CONTROL

C33

Vda

C26

+5V(P)

C22

C20

SOS8_SS

DATA DRIVER

Vda

C10

SUSTAIN CONTROL

VIDEO DATA

+5V(P)

C36

C21

C35

C11

+5V(P)

DATA DRIVER (LEFT)

DATA DRIVER (RIGHT)

DATA DRIVER (CENTER)

SOS8_SS

DATA DRIVER

(LED 6 TIMES)

(LED

7 TIMES)

(LED:8TIMES)

(LED:5TIMES)

(LED:6TIMES)

(LED:4TIMES)

(LED:7TIMES)

(LED:2TIMES)

(LED:3TIMES)

(LED

8 TIME)

(LED

4 TIME)

HOTCOLD

TH-46PZ81E Block (2/6) Diagram

POWER SWITCH

POWER SW

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