Panasonic TH-50PH30E Schematic

Order Number PCZ1104079CE

High Definition Plasma Display

Model No. TH-50PH30E

TH-50PH30ER

GPH14DMON Chassis

1 Safety Precautions ----------------------------------------------- 3

1.1. General Guidelines---------------------------------------- 3

1.2. Touch-Current Check ------------------------------------- 3

2 Warning-------------------------------------------------------------- 4

2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensitive (ES) Devices---------- 4

2.2. About lead free solder (PbF)---------------------------- 5

3 Service Navigation ----------------------------------------------- 6

3.1. Service Hint ------------------------------------------------- 6

3.2. Applicable signals ----------------------------------------- 7

4 Specifications ----------------------------------------------------- 9 5 Operating Instructions-----------------------------------------10 6 Service Mode -----------------------------------------------------12

6.1. CAT (Computer Aided Test) mode -------------------12

6.2. IIC mode structure (following items value is sample data) -----------------------------------------------15

7 Troubleshooting Guide ----------------------------------------16

7.1. Self Check--------------------------------------------------16

7.2. No Power ---------------------------------------------------19

PAG E PAG E

7.3. No Picture-------------------------------------------------- 19

7.4. Local screen failure-------------------------------------- 20

8 Disassembly and Assembly Instructions--------------- 21

8.1. Removal of Rear Cover -------------------------------- 21

8.2. Removal of D-Board------------------------------------- 21

8.3. Removal of HX-Board----------------------------------- 21

8.4. Removal of A-Board------------------------------------- 21

8.5. Removal of Fan------------------------------------------- 22

8.6. Removal of P-Board------------------------------------- 22

8.7. Removal of AC Inlet Assy------------------------------ 22

8.8. Removal of Speaker Terminal Block ---------------- 22

8.9. Removal of SN-Board----------------------------------- 22

8.10. Removal of SS-Board----------------------------------- 23

8.11. Removal of C1-Board----------------------------------- 23

8.12. Removal of C2-Board ----------------------------------- 24

8.13. Removal of S1-Board ----------------------------------- 24

8.14. Removal of Front Glass, V1, V2-Board and Cabinet Assy ---------------------------------------------- 24

8.15. Removal of Plasma Display Panel------------------- 26

TH-50PH30E / TH-50PH30ER

9 Measurements and Adjustments -------------------------- 29

9.1. Adjustment ------------------------------------------------- 29

9.2. Adjustment ------------------------------------------------- 30

10 Block Diagram --------------------------------------------------- 35

10.1. Main Block Diagram ------------------------------------ 35

10.2. Block (1 of 4) Diagram ---------------------------------- 36

10.3. Block (2 of 4) Diagram ---------------------------------- 37

10.4. Block (3 of 4) Diagram ---------------------------------- 38

10.5. Block (4 of 4) Diagram ---------------------------------- 39

11 Wiring Connection Diagram --------------------------------- 40

11.1. Wiring (1) --------------------------------------------------- 40

11.2. Wiring (2) --------------------------------------------------- 41

12 Schematic Diagram--------------------------------------------- 42 13 Printed Circuit Board ------------------------------------------ 42 14 Exploded View and Replacement Parts List -----------42

14.1. Exploded View -------------------------------------------- 42

14.2. Electrical Replacement Parts List -------------------- 42

TH-50PH30E / TH-50PH30ER

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 Fasten 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, 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 (TOUCH 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

TH-50PH30E / TH-50PH30ER

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).

TH-50PH30E / TH-50PH30ER

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.

TH-50PH30E / TH-50PH30ER

3 Service Navigation

3.1. Service Hint

Board Name Function Board Name Function

A Digital Signal Processor, Microcomputer

Audio Processor, Speaker Out Amplifier

D Format Converter, Plasma AI Processor

Sub-Field Processor, Sync Processor SN Scan drive, Scan out P Power supply SS Sustain drive, Sustain out H3 Speaker terminal C1 Data drive (Right) HX PC / RS-232C_Input terminal

C2 Data drive (Left) S1 Power switch V1 Remote receiver, LED-G, R V2 Key switch

3.2. Applicable signals

TH-50PH30E / TH-50PH30ER

4 Specifications

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

Power on 230 W Stand-by condition 0.5 W Power off condition 0.3 W

Plasma Display panel Drive method: AC type

50-inch, 16:9 aspect ratio

Screen size 1,105 mm (W) × 622 mm (H) × 1,268 mm (diagonal)

(No. of pixels) 786,432 (1,024 (W) × 768 (H)) [3,072 × 768 dots]

Operating condition

Temperature 0 °C - 40 °C Humidity 20 % - 80 %

Applicable signals

Colour System NTSC, PAL, PAL60, SECAM, Modified NTSC Scanning format

PC signals VGA, SVGA, XGA

Connection terminals

AV IN

VIDEO BNC 1.0 Vp-p (75-ohm) AUDIO L-R RCA Pin jack × 2 0.5 Vrms HDMI TYPE A Connector

COMPONENT / RGB IN

Y / G BNC with sync 1.0 Vp-p (75-ohm) P

B/CB

R/CR

AUDIO L-R RCA Pin jack × 2 0.5 Vrms

DVI-D IN DVI-D 24 Pin Compliance with DVI Revision 1.0

AUDIO Stereo mini jack (M3) × 1 0.5 Vrms

PC IN High-Density Mini D-sub 15 Pin Y or G with sync 1.0 Vp-p (75-ohm)

AUDIO Stereo mini jack (M3) × 1 0.5 Vrms

SERIAL External Control Terminal

EXT SP Speaker Terminal 6-ohm, 16 W [8 W + 8 W] (10 % THD)

Accessories Supplied

Remote Control Transmitter N2QAYB000535 Batteries R6 (UM3) Size x 2

Dimensions (W × H × D) 1,210 mm × 724 mm × 89 mm Mass (weight)

main unit only approx. 31.0 Kg net with speakers approx. 36.0 Kg

Notes:

• Design and specifications are subject to change without notice. Mass and dimensions shown are approximate.

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

525 (480) / 60i 60p, 625 (575) / 50i 50p, 750 (720) / 60p 50p, 1125 (1080) /

60i 60p 50i 50p 24p 25p 30p 24sF

SXGA, UXGA ..... (compressed)

Horizontal scanning frequency 15 - 110 kHz Vertical scanning frequency 48 - 120 Hz

/B BNC 0.7 Vp-p (75-ohm)

/R BNC 0.7 Vp-p (75-ohm)

Content Protection Compatible with HDCP 1.1

Y or G without sync 0.7 Vp-p (75-ohm)

/ CB / B:0.7 Vp-p (75-ohm)

/ CR / R:0.7 Vp-p (75-ohm)

HD / VD:1.0 - 5.0 Vp-p (high impedance)

D-sub 9 Pin RS-232C compatible

TH-50PH30E / TH-50PH30ER

5 Operating Instructions

TH-50PH30E / TH-50PH30ER

Option Menu for GPH14DMON series

GPH14DMON chassis series have special function and operation setting facility called Option Menu. This Option Menu is useful for special function required customers. This should be set at the installation stage.

Option menus default setting Contents Audio input select --- Set up the sound when an image input is selected. Touch Panel settings --- Set while using Touch Panel (available as an option). Onscreen display On Enable/Disable to display input mode indication after power on and no signal

indication.

Initial INPUT Off Sets the initial input mode when the power is turned on. Allow input mode selec-

Initial VOL level Off Sets the initial volume level when the power is turned on. Allow Volume control

Maximum VOL Level Off Sets the maximum volume to desired level. Volume cannot exceed this level. INPUT lock Off Fixes the input mode to PC, VIDEO, Component/RGB, HDMI or DVI. Can not

Button lock Off Enable/Disable bottom operation buttons (Input, Menu, Enter and/or volume up/

Remocon User Level Off Remote key invalidation.

Off-timer function Enable Off-timer operation Enable/Disable. Initial Power Mode Normal Sets the power mode of the unit for when the power recovers from failure or

ID select 0 Set ID number from 0 to 100. Remote ID Off Remote ID function On/Off.

Serial ID Off Serial ID function On/Off Display size Off Display size function On/Off Studio W/B Off Studio W/B function On/Off Studio Gain Off Studio Gain function On/Off Power On Screen Delay Off You can set the power-on delay time of the displays to reduce the power load,

All Aspect Off Aspect mode: default/All aspect mode. Auto Setup Manual Sets the operational mode of the automatic position adjustment in the POS./

Rotate Off Rotate function On/Off Power On Message (No activity power off)

On Whether to show/hide No activity power off Precautions at the time of power ON

tion while power is on.

while power is on.

change input mode by input selection key.

down)

Off: Valid key is all key of remote. User1: Valid key are only Stand-by (ON/OFF), Input, RECALL, Sound mute On/ Off, and volume adjustment. User2: Valid key is only Stand-by (ON/OFF). User3: All keys are null and void

after plugging off and in again.

(While the Remote ID on, standard remote function can not control the unit.)

when you press to turn on the multiple displays that are set together, for example, on MULTI DISPLAY system. Set each display’s setting individually.

SIZE menu.

is set.

Note:

When both main unit buttons and remote control are disabled due to the “Button lock”, “Remocon User level” or “Remote ID” adjustments, set all the values “Off” so that all the buttons are enabled again. Press the “Volume down” button on main unit together with “R” button on the remote control and hold for more than 5 seconds. The “SHIPPING“ menu is displayed and the lock is released when it disappears.

TH-50PH30E / TH-50PH30ER

6 Service Mode

6.1. CAT (Computer Aided Test) mode

To exit the CAT mode, access the ID mode and switch off the main power.

6.1.1. IIC mode

Select the IIC mode by Up/Down button on the remote control at the front page of CAT mode and then press the Action button on the remote control.

Subject and item are mentioned on “IIC mode structure”. To exit the IIC mode, press the R button on the remote control.

TH-50PH30E / TH-50PH30ER

6.1.2. CD mode

Select the CD mode by Up/Down button on the remote control at the front page of CAT mode and then press the Mute button on the remote control more than 3 seconds.

Memory data change

To exit the CD mode, press the R button on the remote control.

6.1.3. SD mode

Select the SD mode by Up/Down button on the remote control at the front page of CAT mode and then press the Action button on the remote control.

To exit the SD mode, press the R button on the remote control.

TH-50PH30E / TH-50PH30ER

6.1.4. MS mode

Select the MS mode by Up/Down button on the remote control at the front page of CAT mode and then press the Mute button on the remote control more than 3 seconds.

To exit the MS mode, press the R button on the remote control.

Caution:

Market Select should be set after exchange of A-Board.

Destination number

Number Model (Destination)

0 42/50PH30 (Japan) 1 42/50PH30U (North America) 2 50PH30E (Europe)

3 42/50PH30W (Asia, Oceania, ME) 18 42/50PH30C (China) 20 42/50PH30ER (Europe, CIS)

Default setting

Number Destination

1 North America

6.1.5. ID mode

Select the ID mode by Up/Down button on the remote control at the front page of CAT mode and then press the Mute button on the remote control more than 3 seconds.

To exit the ID mode, press the R button on the remote control.

TH-50PH30E / TH-50PH30ER

6.2. IIC mode structure (following items value is sample data)

TH-50PH30E / TH-50PH30ER

7 Troubleshooting Guide

7.1. Self Check

7.1.1. Display Indication

1. Self-check is used to automatically check the bus line controlled circuit of the Plasma display.

2. To get into the Self-check mode, press the volume down button on the customer controls at the bottom of the set, at the same time pressing the OFF-TIMER button on the remote control, and the screen will show.

If the IIC ports have been checked and found to be incorrect Or not located then “ - - ” will appear in place of “ OK ” “ 01 ” in the line of the “ PTCT ” means the number of blinks of the Power LED is 1. (Reference to 7.1.2) “ H09 ” in the line of the “ PTCT ” is the error code.

To exit the CAT mode switch off the main power.

Note:

The line of the “ PTCT ” displays when you get into the Selfcheck mode for the first time only after the Power LED blinks.

TH-50PH30E / TH-50PH30ER

7.1.2. Power LED Blinking timing chart

1. Subject Information of LED Blinking timing chart.

2. Contents When an abnormality has occurred to the unit, the protection circuit operates and resets 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.

* Refer to 7.1.1 Display Indication

TH-50PH30E / TH-50PH30ER

About blinking LED

7.2. No Power

First check point There are following 3 states of No Power indication by power LED.

1. No lit.

2. Green is lit then turns red blinking a few seconds later.

3. Only red is lit.

TH-50PH30E / TH-50PH30ER

7.3. No Picture

TH-50PH30E / TH-50PH30ER

7.4. 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

TH-50PH30E / TH-50PH30ER

8 Disassembly and Assem-

bly Instructions

• To disassemble P.C.B., wait for 1 minute after power was off for discharge from electrolysis capacitors.

• , , , , and marks indicate screw positions.

8.1. Removal of Rear Cover

1. Remove screws (×17 , ×23 ) and then remove the

Rear Cover.

2. Remove 2 Hexagonal-Head screws, 4 screws ( ) and 2 screws ( ) and 1 screw ( ) and then remove the HXBoard Block.

3. Turn over the HX-Board Block.

4. Disconnect the connector (HX1).

5. Remove 4 Hexagonal-Head screws and 1 screw of HXBoard and then remove HX-Board.

8.2. Removal of D-Board

1. Disconnect the connector (D25).

2. Remove the flexible cable from the connectors (D15, D20, D31, D32).

3. Remove 4 screws and then remove the D-Board.

8.3. Removal of HX-Board

1. Disconnect the connector (A14).

8.4. Removal of A-Board

1. Remove the HX-Board Block. (Refer to Removal of HX-Board)

2. Disconnect the connectors (A8, A11, A16, A22, A31).

3. Remove the flexible cables from the connector (A5).

4. Remove 4 screws and then remove A-Board.

TH-50PH30E / TH-50PH30ER

Note: when fixing A-Board

• Put the flexible Cable between the Fixed Metal and ABoard when Connect the flexible Cable to the connector (A5).

8.5. Removal of Fan

1. Disconnect the Fan Relay Connector.

2. Remove 2 screws and then remove the Fan Block.

3. Remove 1 screw and then remove the Fan from the Fan Fixed Metal.

8.6. Removal of P-Board

1. Disconnect the connectors (P2, P9, P11, P16, P25, P34, P35).

2. Remove 9 screws and then remove P-Board.

8.7. Removal of AC Inlet Assy

1. Disconnect the connector (P9).

2. Remove 2 screws ( ) and then remove the AC Cord Clamper A.

3. Remove 1 screw ( ) and then remove the AC Inlet Assy.

4. Remove each 4 Fan Corner Sponge from the Fan.

5. Reassemble the Fan in reverse order.

6. Stick the Fan Sponge around the Fan.

8.8. Removal of Speaker Terminal Block

1. Disconnect the connector (H37).

2. Remove 1 screw and then remove the Speaker Terminal Block (H3-Board).

Note:

The Fan Sponge is not re-usable. Please use a new one when Fan exchange.

8.9. Removal of SN-Board

1. Disconnect the connectors (SN2, SN3).

2. Remove the flexible cable from the connectors (SN20, SN21, SN22, SN23, SN24, SN25, SN26).

TH-50PH30E / TH-50PH30ER

3. Remove 6 screws and then remove SN-Board.

8.10. Removal of SS-Board

1. Disconnect the connectors (A8, A11, A16, A22, A31).

2. Remove the flexible cables from the connector (A5).

3. Remove 2 screws ( ).

4. Remove 2 screws ( ) and then remove the A-Board Block.

7. Remove 3 screws and then remove SS-Board.

8.11. Removal of C1-Board

1. Remove the Fan Block. (Refer to remove of Fan).

2. Remove the Speaker Terminal Block. (Refer to remove of Speaker Terminal Block).

3. Disconnect the connector (P9).

4. Remove 2 screws ( ) and then remove the AC Inlet Block Block.

Note: when fixing A-Board Block

• Put the flexible Cable between the Fixed Metal and ABoard when Connect the flexible Cable to the connector (A5).

5. Disconnect the connectors (SS3, SS11).

6. Remove the flexible cables from the connectors (SS23, SS52, SS55).

5. Remove 5 screws and then remove the Hanger Metal R and the Stand Pole Bracket Assy (R).

6. Remove the flexible cables from the connectors (C10, C11).

7. Remove 8 screws ( ) and then remove the flexible cables from the connectors (CB1, CB2, CB3, CB4).

TH-50PH30E / TH-50PH30ER

8. Remove 4 screws ( ) and then remove C1-Board.

8.12. Removal of C2-Board

1. Remove the Fan Block. (Refer to remove of Fan).

2. Remove the AC Inlet Block. (Refer to remove of Slot Block).

3. Remove the A-Board Block. (Refer to remove of SS-Board).

4. Remove 5 screws and then remove the Hanger Metal L and the Stand Pole Bracket Assy (L).

3. Remove 1 screw (C) and then remove S1-Board.

8.14. Removal of Front Glass, V1, V2-Board and Cabinet Assy

1. Remove the Speaker Terminal Block. (Refer to remove of Speaker Terminal Block).

2. Remove the S1-Board Block. (Refer to Removal of S1-Board)

3. Disconnect the connectors (A11, A22).

4. Remove 9 screws ( ).

5. Disconnect the connector (C25).

6. Remove the flexible cables from the connectors (C20, C21, C23).

7. Remove 8 screws ( ) and then remove the flexible cables from the connectors (CB5, CB6, CB7, CB8).

8. Remove 4 screws ( ) and then remove C2-Board.

8.13. Removal of S1-Board

1. Remove 2 screws (B) and then remove the S1-Board Block.

2. Disconnect the connector (S34).

5. Pull the bottom of the Plasma Display Panel forward (arrow1).

6. Slide the Plasma Display Panel and then remove the Plasma Display Panel (arrow2).

8.14.1. Removal of Front Glass

1. Remove 24 screws and then remove the Fixed Angle (left, right, upper-rear, bottom-rear).

TH-50PH30E / TH-50PH30ER

2. Remove the Front Glass.

Note: when fixing fixed Angle (upper-rear, bottomrear)

• Firstly screw on 6 screws (1-2) in order.

Note: when Front Glass is exchanged

• Paste the Front Glass Sponges in order along each Fixed Angles left and right, upper and bottom.

5. Remove 1 hook and then remove V1-Board

6. Remove 2 hooks and then remove the Power Button Shield.

7. Remove 3 hooks and then remove the Power Button and Power Button Spring.

8. Disconnect the connector (V22) and then remove V2Board.

9. Remove 2 hooks and then remove the 5 Key Button from V2-Board.

Note

• The sponges are parts which cannot be recycled. Please use the new article when you exchange the Front Glass.

8.14.2. Removal of V1-Board and V2-Board

1. Remove the Front Glass. (Refer to remove of Front Glass).

2. Remove the Fixed Angle (bottom-front).

8.14.3. Removal of Cabinet Assy

1. Remove the Front Glass. (Refer to Removal of Front Glass)

2. Remove V1-Board and V2-Board. (Refer to Removal of V1-Board and V2-Board)

3. Remove the LED Panel and Remote Sensor Panel.

4. Remove the Rear Cover Hook (Left, Right).

5. Remove the Fixed Angle (upper-front).

3. Remove 2 screws (D).

4. Disconnect the connector (V11).

TH-50PH30E / TH-50PH30ER

6. Remove the Cabinet Assy.

8.15. Removal of Plasma Display Panel

The C1,C2 Boards are connected with the plasma display panel for the repair.

1. Disconnect the Fan Relay Connector.

2. Remove 2 screws and then remove the Fan Block.

8. Remove 2 screws ( ) and then remove the A-Board Block.

9. Remove 1 screw and then remove the Speaker Terminal Block.

3. Disconnect the connector (P9).

4. Remove 2 screws ( ) and then remove the AC Inlet Block.

5. Disconnect the connectors (A8, A11, A16, A22).

6. Remove the flexible cables from the connector (D15).

7. Remove 2 screws ( ).

10. Disconnect the connector (S34).

11. Remove 2 screws (E) and then remove the S1-Board Block.

TH-50PH30E / TH-50PH30ER

12. Remove the flexible cables from the connectors (SN21, SN22, SN23, SN24, SN25, SN26).

13. Disconnect the connectors (SN2, SN3).

14. Remove the flexible cables from the connector (SN20).

15. Remove 6 screws and then remove SN-Board.

21. Remove 4 screws and then remove D-Board.

22. Remove 5 screws and then remove P-Board.

16. Disconnect the connector (SS11).

17. Remove the flexible cables from the connectors (C23, SS52, SS55).

18. Remove 3 screws and then remove SS-Board.

19. Disconnect the connectors (C25, D25).

20. Remove the flexible cables from the connectors (C11, C21).

23. Remove the flexible cable from the connectors (C10, C20).

24. Remove 7 screws ( ).

Note: when fixing Handle Fixing Metal (L, R)

• Screw on 2 screws (1) firstly.

25. Pull the bottom of the Plasma Display Panel forward (arrow1).

TH-50PH30E / TH-50PH30ER

26. Slide the Plasma Display Panel and then remove the Plasma Display Panel (arrow2).

27. Remove 12 screws and then remove the Hanger Metal L, the Hanger Metal R, the Stand Pole Bracket (L, R) and the Hanger Fixing Metal (L, R).

28. Exchange the Plasma Display Panel.

TH-50PH30E / TH-50PH30ER

9 Measurements and Adjustments

9.1. Adjustment

9.1.1. Vsus selection

Caution:

When Plasma panel or A-board is replaced, Vsus should be set to LOW or HIGH.

Procedure

1. Access the CAT mode. Press and hold the Volume down / - button on the front panel of the unit and press the [RECALL] button on the remote control 3 times quickly within 2 second, this will place the unit into the CAT mode.

2. Select the IIC mode.

3. Go into item [VSUS] in the IIC mode by Up / Down buttons. LOW or HIGH will be displayed.

4. Press [OK] button to go to TEST stage. White pattern without On-Screen Display will be displayed during TEST and CONF stage. Press [RECALL] button to display the On-Screen Display.

5. Press [VOL (-)] button to set to LOW.

6. In LOW setting

a. If no several dead pixel is visible remarkably in white pattern, press [RIGHT] button to go to CONF stage. b. If the several dead pixels are visible remarkably in white pattern, Set to HIGH by press [VOL (+)] button. Press [RIGHT]

button to go to CONF stage if the symptom is improved.

7. Press [OK] button in CONF stage to store LOW or HIGH.

8. Exit Service Mode by pressing [Power] button.

TH-50PH30E / TH-50PH30ER

9.2. Adjustment

9.2.1. RGB white balance adjustment

Instrument Name Connect to Setting

• RGB VGA60 W / B pattern

• Color analyzer (Minolta CA-100 or equivalent)

Steps Remarks

[Conditions]

• 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.

[Adjustment]

1. Set COMPONET / RGB-IN SELECT to RGB.

2. Select the IIC mode “PANEL W / B Adj.” item.

3. Check that the color temperature is “COOL (Hi)”.

4. Output a white balance pattern.

5. Touch the signal receiver of color analyzer to the highlight window’s center.

6. Fix G drive at E0h and adjust B drive and R drive so x, y become the "Color temperature COOL(Hi)" in the below table. Adjust it again after it lowers of 08h data when the adjustment is NG. ( In addition, adjust it after it lowers by 08h data for NG. )

7. Adjust R/G/B together by multiplication so the maximum drive value in R/G/B becomes FCh with the gain ratio kept. (ALL-DRIVE)

8. Set color temperature to “NORMAL (Mid)”.

9. Fix G drive at E0h and adjust B drive and R drive so the highlight window's x, y becomes the "Color temperature NORMAL(Mid)" in the below table. Adjust it again after it lowers of 08h data when the adjustment is NG. ( In addition, adjust it after it lowers by 08h data for NG. )

10. Adjust R/G/B together by multiplication so the maximum drive value in R/G/B becomes FCh with the gain ratio kept. (ALL-DRIVE)

11. Set color temperature to “WARM (Low)”.

12. Set G drive to E0h and adjust B drive and R drive so the highlight window's x, y become the "Color temperature WARM(Low)" shown in the below table. Adjust it again after it lowers of 08h data when the adjustment is NG. (In addition, adjust it after it lowers by 08h data for NG.)

13. Adjust R/G/B together by multiplication so the maximum drive value in R/G/B becomes FCh with the gain ratio kept. (ALL-DRIVE)

14. Copy the R drive, G drive and B drive data in NTSC, PAL DVI region.

PC IN terminal Panel surface

Picture menu: STANDARD User setting: Normal except PICTURE: max 30

Picture menu: STANDARD User setting: Normal except PICTURE: max 30 Aspect: Full (16 : 9) Position and size: Normal

• “7” key : color temperature select.

• “9” key : Picture menu select.

• Highlight section Signal amplitude 75%

• Drive standard G: E0h

Adjustment target Hi-light: x ± 0.003 y ± 0.003 Hi-light is target of the number at drive adjustment in the hi-light windows. Therefore, it is not target of the hi-light number at after adjustment white balance.

+ 98 hidden pages

Panasonic TH-50PH30E Schematic

TABLE OF CONTENTS

1 Safety Precautions

2Warning

3 Service Navigation

4 Specifications

5 Operating Instructions

6 Service Mode

7 Troubleshooting Guide

9 Measurements and Adjustments