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ORDER NO. PCZ0903030CE

Plasma Television

Model No. TX-PR37X10

GPH12DE C assis

A WARNING

This service information is designed for e perienced repair technicians only and is not designed for use by the general public.

It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.

Products powered by electricity should be serviced or repaired only by e perienced professional technicians. Any attempt to service

or repair the product or products dealt with in this service information by anyone else could result in serious injury or death.

IMPORTANT SAFETY NOTICE

There are special components used in this equipment which are important for safety. These parts are marked by A in the Schematic

Diagrams, Circuit Board Diagrams, E ploded Views and Replacement Parts List. It is essential that these critical parts should be replaced

with manufacturer's specified parts to prevent shock, fire or other hazards. Do not modify the original design without permission of

manufacturer.

Panasonic' © Panasonic Corporation 2009.

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 e posed 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.

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

1.2. Touc -Current C eck

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 e posed 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 e posed 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) e pressed as voltage U1 and U2, does not e ceed the following values:

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 U2 = 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

mA d. c.

The limit value U1 = 35 V (peak) for a. c. correspond to the value 70 mA (peak) a. c. for frequencies greater than 100 kHz.

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.

Measuring network for TOUCH CURRENTS

COLD

WATER PIPE

(EARTH GROUND)

Rs=

1500Q_ L Cs=

0.22|jF10kQ

-1 k 1

---------1

Ro=

----------------

J

500Q

'

U1 =

r

= 0.022|jF ( V )

J Q L jJ J U U i i U 1 —|— и . и ^ г ф Г ^ V J | U2 (V)

APPLIANCES

EXPOSED

METAL PARTS

Resistance values in ohms (Q)

V: Voltmeter or oscilloscope

(r.m.s. or peak reading)

Input resistance: > 1 MQ

Input capacitance: < 200 pF

Frequency range: 15 Hz to 1 MHz and d.c. respectively

NOTE - Appropriate measures should be taken to obtain the correct value in case of non-sinusoidal waveforms.

Figure 1

2

2 Warning

2.1. Prevention of Electrostatic Disc arge (ESD) to Electrostatically

Sensitive (ES) Devices

Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Elec

trostatically Sensitive (ES) Devices. E amples of typical ES devices are integrated circuits and some field-effect transistors and

semiconductor [chip] components. The following techniques should be used to help reduce the incidence of component damage

caused by electrostatic discharge (ESD).

1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your

body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap,

which should be removed for potential shock reasons prior to applying power to the unit under test.

2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as alumi

num foil, to prevent electrostatic charge buildup or e posure of the assembly.

3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.

4. Use only an anti-static solder removal device. Some solder removal devices not classified as [anti-static (ESD protected)] can

generate electrical charge sufficient to damage ES devices.

5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.

6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most

replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or compara

ble conductive material).

7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material

to the chassis or circuit assembly into which the device will be installed.

Caution

Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.

8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise ham less motion such as the brush

ing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) sufficient

to damage an ES device).

3

Note: Lead is listed as (Pb) in t e periodic table of elements.

In t e information below, Pb will refer to Lead solder, and PbF will refer to Lead Free Solder.

T e Lead Free Solder used in our manufacturing process and discussed below is (Sn+Ag+Cu).

T at is Tin (Sn), Silver (Ag) and Copper (Cu) alt oug ot er types are available.

This model uses Pb Free solder in it's manufacture due to environmental conservation issues. For service and repair work, we'd

suggest the use of Pb free solder as well, although Pb solder may be used.

PCBs manufactured using lead free solder will have the PbF within a leaf Symbol PbF stamped on the back of PCB.

Caution

• Pb free solder has a higher melting point than standard solder. Typically the melting point is 50 ~ 70 °F (30~40 °C) higher. Please

use a high temperature soldering iron and set it to 700 ± 20 °F (370 ± 10 °C).

• Pb free solder will tend to splash when heated too high (about 1100 °F or 600 °C).

If you must use Pb solder, please completely remove all of the Pb free solder on the pins or solder area before applying Pb sol

der. If this is not practical, be sure to heat the Pb free solder until it melts, before applying Pb solder.

• After applying PbF solder to double layered boards, please check the component side for e cess solder which may flow onto the

opposite side. (see figure below)

component component

remove all of the ^ 1П\

e cess solder

2.2. About lead free solder (PbF)

slice

\

solder

Suggested Pb free solder

There are several kinds of Pb free solder available for purchase. This product uses Sn+Ag+Cu (tin, silver, copper) solder. How

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

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, Tuner

Speaker out, AV Terminal, AV Switch

Digital Signal Processor, SYSTEM MPU, HDMI Switch

Peaks lite 2p

Format Converter, Plasma AI, Sub-Field Processor

C2 Data Driver (Lower Left)

SC Scan Drive

SS Sustain Drive

SS2 Sustain out (Lower)

SM Scan out

None serviceable.

SM-Board should be e changed for service.

K Remote receiver, Power LED, C.A.T.S. sensor GK Key Switch

S Power Switch

5

3.2. Applicable signals

COMPONENT (Y, PB, PR), HDMI

* Mark: Applicable input signal for Component (Y, PB, PR) and HDMI

Signal name COMPONENT HDMI

525 (480) / 60i * *

525 (480) / 60p * *

625 (576) / 50i * *

625 (576) / 50p * *

750 (720) / 60p * *

750 (720) / 50p * *

1,125 (1,080) / 60i * *

1,125 (1,080) / 50i * *

1,125 (1,080) / 60p *

1,125 (1,080) / 50p *

1,125 (1,080) / 24p *

PC (from D-sub 15P)

Applicable input signal for PC is basically compatible to VESA standard timing.

Signal name Horizontal frequency (kHz) Vertical frequency (Hz)

640 400 @70 Hz 31.47 70.07

640 480 @60 Hz 31.47 59.94

640 480 @75 Hz 37.50 75.00

800 600 @60 Hz 37.88 60.32

800 600 @75 Hz 46.88 75.00

800 600 @85 Hz 53.67 85.06

852 480 @60 Hz 31.44 59.89

1,024 768 @60 Hz 48.36 60.00

1,024 768 @70 Hz 56.48 70.07

1,024 768 @75 Hz 60.02 75.03

1,024 768 @85 Hz 68.68 85.00

1,280 768 @60 Hz 47.70 60.00

1,280 1,024 @60 Hz 63.98 60.02

1,366 768 @60 Hz 48.39 60.04

Macintosh13 inch (640 480) 35.00 66.67

Macintosh16 inch (832 624) 49.73 74.55

Macintosh21 inch (1,152 870) 68.68 75.06

PC (from HDMI terminal)

Applicable input signal for PC is basically compatible to HDMI standard timing.

Signal name Horizontal frequency (kHz) Vertical frequency (Hz)

640 480 @60 Hz 31.47 60.00

750 (720) / 60p 45.00 60.00

1,125 (1,080) / 60p 67.50 60.00

Note

• Signals other than above may not be displayed properly.

• The above signals are reformatted for optimal viewing on your display.

• PC signal is magnified or compressed for display, so that it may not be possible to show fine detail with sufficient clarity.

6

4 Specifications

Power Source

Power Consumption

Power Consumption in Standby mode

Display panel

Aspect Ratio

Visible screen size

Number of pixels

Sound Speaker

Audio Output

Headp ones

PC signals

Receiving Systems / Band name

Aerial - Rear

Operating Conditions

Connection Terminals

AV1 (Scart terminal)

AV2 (Scart terminal)

AV3 VIDEO

S-VIDEO

AUDIO L - R

COMPONENT

VIDEO

AUDIO L - R

Ot ers

HDMI1 / 2 / 3

PC

Card slot

Output

AUDIO L - R

Dimensions (W H D)

Mass

AC 220-240 V, 50 / 60 Hz

275 W

0.7 W

16:9

94 cm (diagonal) 819 mm (W) 457 mm (H)

737,280 (1,024 (W) 720 (H)) [3,072 720 dots]

160 mm 40 mm 2 pcs, 6 Q

20 W (10 W + 10 W), 10 % THD

M3 (3.5 mm) stereo mini Jack 1

VGA, SVGA, WVGA, XGA

SXGA, W X G A

......

(compressed)

Horizontal scanning frequency 31 - 69 kHz

Vertical scanning frequency 59 - 86 Hz

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

VHF E2 - E12

VHF A - H (ITALY)

CATV (S01 - S05)

CATV S11 - S20 (U1 - U10)

PAL D, K, SECAM D, K

VHF R1 - R2

VHF R6 - R12

PAL 525/60

M.NTSC

NTSC (AV input only)

VHF H1 - H2 (ITALY)

UHF E21 - E69

CATV S1 - S10 (M1 - M10)

CATV S21 - S41 (Hyperband)

VHF R3 - R5

UHF E21 - E69

Playback of NTSC tape from some PAL Video recorders (VCR)

Playback from M. NTSC Video recorders (VCR)

Playback from NTSC Video recorders (VCR)

• TV signals may not be received in some areas.

VHF / UHF

Temperature:

Humidity: 0 °C - 3 5 °C

20 % - 80 % RH (non-condensing)

21 Pin terminal (Audio/Video in, Audio/Video out, RGB in, Q-Link)

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

RCA PIN Type 1

Mini DIN 4-pin

RCA PIN Type 2

Y

Pb,Pr

RCA PIN Type 2

1.0 V [p-p] (75 Q)

Y:1.0 V [p-p] (75 Q) C:0.286 V [p-p] (75 Q)

0.5 V [rms]

1.0 V [p-p] (including synchronization)

± 0.35 V [p-p]

0.5 V [rms]

TYPE A Connectors HDMI™ (Version 1.3a with .v.Colour™)

• This TV supports [HDAVI Control 4] function.

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

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

SD Card slot 1

RCA PIN Type 2 0.5 V [rms] (high impedance)

929 mm 639 mm 334 mm (With Pedestal)

929 mm 596 mm 105 mm (TV only)

24.0 kg Net (With Pedestal)

22.0 kg Net (TV only)

Note

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

• Pedestal: ST-42CF2WG / ST-50CF2WG (For safety approval)

7

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.

Software version ■

Picture adjustment

----------

White balance adjustment

Option setting

-----------------

Agig

-------------------------------

Service tool

SERVICE

ADJUST

WB-ADJ

OPTION

AGING

SRV-TOOL

1

Peaks SOFT *.*** OPTION 1 1c

Peaks EEP OPTION 2 ef

LSI DATA OPTION 3 01

STBY SOFT Model ID 06

STBY EEP 021e3100

STBY ROMCOR 00000040

PDP SOFT RB Cn+ 000

PDP EEP

PDP FPGA

PDP PDROM

Press

[1]

Button

I Sub Item

1 1

Ia d j u st " i '

'CONTRAST i '0000i

YMAX

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 ( - )

8

5.1.2. Contents of adjustment mode

• Value is shown as a he adecimal number.

• Preset value differs depending on models.

• After entering the adjustment mode, take note of the value in each item before starting adjustment.

Main item Sub item Sample data Remark

ADJUST CONTRAST 23A

COLOR 2B

TINT 00

SUB-BRT 80С

H-POS 0

H-AMP 0

V-POS 0

V-AMP 0

WB-ADJ R-CUT 80

G-CUT 80

B-CUT 80

R-DRV F1

G-DRV FC

B-DRV DO

ALL-CUT 80

ALL-DRV FC

OPTION Panel-Type 37HD Factory

Boot ROM Preset

STBY-SET 00

EMERGENCY ON

Y/С Delay 0

OPT 1 00011100

OPT 2 11101111

ОРТЗ 00000001

AGING RGBW

Vertical line

All white (COUNTER)

All white

All red

All green

All blue

ON/OFF

Diagonal lamp W

Diagonal lamp R

Diagonal lamp G

Diagonal lamp В

1% WINDOW

COLOR BAR

A В zone/checkerd 4 trio

SCROLL BAR

2dot width border

Low setup Red

Low setup Green

Low setup Blue

SRV-TOOL see ne t

Destinations TX-PR**X10

Russia

Checksum 66АС

EDID ad 05f5e5-

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.

9

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.

Display of TD2Microcode version —

Display of Flash ROM maker code -

Display of SOS History

---------------

SRV-TOOL

TD2Microcode:00500910

Flash ROM : 1 - 227E

PTCT : 00 . 00 . 00 . 00 . 00 Time 00000:40 On/Off 0000022 . POWER ON Time, On/Off

Press [MUTE] button (3sec)

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, On/Off

Note : To display Time, On/Off menu, highlight position, then press MUTE for 3sec.

Time : Cumulative power on time, indicated hour : minute by decimal

On/Off : Number of On/Off switching 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 [ Power ] button on the unit.

10