Panasonic TX-32LE60F User manual

Service Manual

Colour LCD Television

TX-32LE60F

TX-32LE60P

TX-26LE60F

TX-26LE60P

GLP21 Chassis

Specifications

(Informations in brackets [ ] refers to models 26´´)

Power Source: 220-240V AC, 50Hz

Power Consumption: 117W [104W]

Stand-by Power

Consumption: 1W [1W]

Aerial Impedance: 75Ωunbalanced, Coaxial Type

Receiving System: PAL-B/G, D/K,

SECAM B/G, D/K, L/L’

PAL-525/60 (AV only)

M.NTSC (AV only)

NTSC (AV only)

Receiving Channels:

VHF E2-E12 VHF H1-H2 (ITALY)

VHF A-H (ITALY) VHF R1-R2

VHF R3-R5 VHF R6-R12

UHF E21-E69 CATV (S01-S05)

CATV S1-S10 (M1-M10) CATV S11-S20 (U1-U10)

CATV S21-S41 (Hyperband)

Operating Conditions:

Temperature: 5°C ÷35°C

Humidity: 5% ÷90% RH (non-condensing)

Intermediate Frequency:

Video/Audio

Video 38,9MHz, 33,9MHz

Audio 33,4MHz (B/G), 33,16MHz (A2)

33,05MHz (NICAM B/G, D/K, L)

32,4MHz (D/K), 32,66MHz (CZ STEREO)

40,4MHz (L’), 39,75Mhz (L’NICAM),

Colour 34,47MHz (PAL)

34,5MHz, 34,65MHz (SECAM)

38,3MHz, 38,15MHz (SECAM L’)

Terminals:

AV1 IN Video (21 pin) 1V p-p 75Ω

Audio (21 pin) 500mV rms 10kΩ

RGB (21 pin) 0,7V p-p 75Ω

AV1 OUT Video (21 pin) 1V p-p 75Ω

Audio (21 pin) 500mV rms 1kΩ

AV2 IN Video (21 pin) 1V p-p 75Ω

Audio (21 pin) 500mV rms 10kΩ

RGB (21 pin) 0,7V p-p 75Ω

S-video IN Y: 1V p-p 75Ω

(21-pin) C:0,3V p-p 75Ω

AV2 OUT Video (21 pin) 1V p-p 75Ω

Audio (21 pin) 500mV rms 1kΩ

AV3 IN S-Video IN Y: 1V p-p 75Ω

(4-pin) C:0,3V p-p 75Ω

Audio (RCAx2) 500mV rms 10kΩ

Video (RCAx1) 1V p-p 75Ω

HDMI1 Type A Connector

COMPONENT YUV Video (RCAx3) Y:1V p-p 75Ω

Pb, Pr: 0,7V p-p 75Ω

AUDIO IN Audio (RCAx2) 500mV rms 10kΩ

LCD screen: L5EDD8Q00023 [L5EDD6Q00017]

1366 x 768 XGA, 16:9

Visible Diagonal 800mm [660mm]

Audio Output: 2x10W RMS

8Ωimpedance

Headphones: 3,5mm, 8ΩImpedance

Accessories

supplied : Remote Control

2 x R6 (UM3) Batteries

Dimensions:

Height: Width: Depth:

Including TV stand 615mm 791mm 301mm

[525mm] [657mm] [301mm]

TV set only 563mm 791mm 107mm

[473mm] [657mm] [107mm]

Net weight: 17,5kg [14,kg]

Specifications are subject to change without notice.

Weights and dimensions shown are approximate.

ORDER No. PCZ0608063CE

CONTENTS

SAFETY PRECAUTIONS ........................................... 3

GENERAL GUIDE LINES...................................... 3

TOUCH – CURRENT CHECK............................... 3

PREVENTION OF ELECTROSTATIC DISCHARGE

(ESD) TO ELECTROSTATICALLY SENSITIVE (ES)

DEVICES .................................................................... 4

ABOUT LEAD FREE SOLDER (PBF)......................... 5

SUGGESTED PB FREE SOLDER ........................ 5

SERVICE HINTS ........................................................ 6

CHASSIS BOARD LAYOUT ....................................... 7

SETTING INSPECTION.............................................. 7

SELF-CHECK ............................................................. 8

ADJUSTMENT METHOD ........................................... 9

BLOCK DIAGRAMS.................................................. 10

PARTS LOCATION................................................... 13

REPLACEMENT PARTS LIST.................................. 14

SCHEMATIC DIAGRAMS ......................................... 25

A-BOARD (1 OF 5) SCHEMATIC DIAGRAM ...... 26

A-BOARD (2 OF 5) SCHEMATIC DIAGRAM ...... 27

A-BOARD (3 OF 5) SCHEMATIC DIAGRAM ...... 28

A-BOARD (4 OF 5) SCHEMATIC DIAGRAM ...... 29

A-BOARD (5 OF 5) SCHEMATIC DIAGRAM ...... 30

P-BOARD SCHEMATIC DIAGRAM .................... 31

B-BOARD SCHEMATIC DIAGRAM .................... 32

H-BOARD SCHEMATIC DIAGRAM .................... 32

V-BOARD SCHEMATIC DIAGRAM .................... 33

K-BOARD SCHEMATIC DIAGRAM .................... 33

CONDUCTOR VIEWS .............................................. 34

Safety Precautions

General Guide Lines

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 touch current checks to prevent the customer from being exposed to shock hazards.

4. Always ensure panel TKKL5290 is correctly replaced before returning to customer (see Fig.1).

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 Fig. 2.

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 U1 and U2, does not exceed 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.

Fig. 2

Fig. 1

PPLIANCES

EXPOSED

METAL PARTS

Resistance values in ohms (Ω)

R0=500

Ω

RS=1500

Ω

CS=0.22

10k

Ω

0.022

COLD

WATER PIPE

(EARTH GROUND)

V: Voltmetr or oscilloscope

(r.m.s. or peak reading)

Measuring network for TOUCH CURRENTS

Input resistance: ≥ 1M

Ω

Input capacitance: ≤ 200pF

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

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

U2(V)

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 build up 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 harmless 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).

There are special components used in this equipment which are important for safety.

These parts are marked by in schematic diagrams, exploded 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.

IMPORTANT SAFETY NOTICE

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

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 Fig.3)

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. (see Fig.4)

Fig.3

Fig.4

Service Hints

How to remove the Pedestal assembly

Lay the main unit face down. (see Fig.5)

Remove the 2 fixing screws and hinge cover. (see Fig.6)

Remove the 8 fixing screws and the pedestal assembly. (see Fig.7)

How to remove the backcover

Remove the 2 fixing screws and hinge cover. (see Fig.6)

Remove the 16 fixing screws. (see Fig.8)

Carefully remove the backcover and disconnect two AV3 wires. (see Fig.9)

Fig.5

Fig.6

SCREWS

Fig.7

SCREWS SCREWS

Fig.8

Fig.9

Chassis Board Layout

Setting Inspection

Voltage Confirmation

Board Name Function

A-Board Main Board

B-Board Tuner

H-Board AV3 Terminal

Key Control Key Control

K-Board Mains Input, Power Switch

P-Board Power Supply

V-Board Remote Receiver, LED IR, Bats

P-BOARD

V-BOARD

K-BOARD

-BOARD

B-BOARD

KEY CONTROL

H-BOARD

Confirm the following voltages:

A board Normal mode

Test point Position Voltage

TP004 C870, + pin 33V ± 3V

TP005 Connector A7, pin 22 12V [15V]

TP006 C1500, + pin 8V ± 0,3V

TP008 C1700, + pin 5V ± 0,2V

TP010 C890 - R898 3,3V ± 0,1V

TP012 Q878, pin 1 3,3V ± 0,1V

TP017 Connector A7, pin16 10,5V ÷ 16V

TP018 IC252, pin 5 24V

TP019 IC862, pin 1 24V

TP023 Connector A7, pin 12 24V

Standby mode

TP009 C883, + pin 1,8V ± 0,1V

TP013 C868, + pin 3,3V ± 0,1V

P board

Normal mode

TP001 Connector P2, pin 20 12V ± 2V [15V± 2V]

TP002 Connector P2, pin 8 24V ± 2V

TP003 Connector P2, pin 9 24V ± 1V

Standby mode

TP002 Connector P2, pin 8 24V

TP003 Connector P2, pin 9 <2V

Self Check

Self-check is used to automatically check the bus lines and hexadecimal code of the TV set. To enter Self-Check mode, keep

pressing the STATUS button on the remote control and press the down (-/v) button on the TV set. To exit Self Check,

switch off the TV set at the power button.

Display Ref. No. Description P.C.B.

E2 IC1120 EAROM A-Board

DPS IC1501 DISPLAY PROCESSOR AND SCALER A-Board

VSP IC1501 VIDEOSIGNAL PROCESSOR A-Board

AVSW IC1501 AV SWITCH A-Board

TUN TNR001 TUNER B-Board

MSP IC1501 MULTISTANDART SOUND PROCESSOR A-Board

DPL --- DOLBY PROLOGIC PROCESSOR ---

MAS --- MPEG1 AUDIO PROCESSOR ---

If the CCU

orts have been checked and found to be incorrect or not located then " - - " will a

ear in

lace of "O.K.".

E2 O.K.

DPS O.K.

VSP O.K.

VSW O.K.

TUN O.K.

MSP O.K.

DPL ---

MAS ---

TX-32LE60F TX-32LE60P TX-26LE60F TX-26LE60P

OPTION 1 0F 0F 0F 0F

OPTION 2 00 00 00 00

OPTION 3 B9 B9 B9 B9

OPTION 4 11 11 11 11

OPTION 5 00 00 00 00

OPTION 6 15 15 15 15

OPTION 7 FD FD FD FD

OPTION 8 D0 50 D0 50

OPTION 9 00 00 00 00

OPTION 10 20 20 20 20

OPTION 11 13 13 13 13

OPTION 12 20 20 20 20

OPTION 13 1C 1C 1C 1C

CHECK 2A AA 2A AA

Adjustment Method

How to enter Service 1

•Set the Bass to maximum position, set the Treble to minimum position then keep pressing the INDEX button on the

remote control and press the down button (-/v) on the TV set, this will place the TV set into the Service Mode 1.

Key Command

•Press the RED /GREEN buttons to step up / down through the functions.

•Press the YELLOW /BLUE buttons to alter the function values, to alter White Rasters use +/-buttons

•Press the OK button after each adjustment has been made to store the required values.

•To exit the Service Mode, press the "N" button.

Keep adjusting sequence: DVCO, Sub-Contrast, other items.

Item Setting indication

Note: All setting values are approximate Settings / Special features

Sub-Contrast Sub-Contrast

Receive a 80% white level Philips Pattern with correct

sound system (B/G, D/K) via aerial input. For Sub-

Contrast alignment press "Blue" button, wait until the

figure colour is changed from red to black colour.

Press the OK.

DVCO DVCO

Receive a 80% white level Philips Pattern via aerial

input. For DVCO alignment press "Blue" button, wait

until the figure colour is changed from red to black

colour. Press the OK.

Highlight

Lowlight For correct setting see White Balance Adjustment

Sub-Brightness Sub-Brightness

0Optimum setting.

White Balance Adjustment

Instrument

•Remote Control

•LCD WB meter (Minolta CA-210 or equivalent)

Condition

•Switch on the TV Set. Enter Service1. Step down to Highlight line and keep the aging time more than 20 minutes.

Procedure

•After aging time above set White Raster No.12 for Highlight and No.4 for Lowlight Press the OK button

to store.

•Put Minolta Sensor to the center of the LCD Panel with 25mm gap between Minolta Sensor and LCD Panel. Adjust "x"

and "y" values by changing Red and Blue values.

•Press OK button to store setting.

High 12 0296 0300 0296

Low 40026 0054 0040

High 12

Low 4

Item Value

x0,280±0,002

Highlight y0,285±0,002

x0,275±0,002

Lowlight y0,285±0,002

Video & Stereo Audio Block Diagram

H-BOARD

A12

TUNER

B-BOARD

VIDEO OUT 17

SIF_OUT 14

AM 13

IC5003

HDMI RECEIVER

JK3001

IC251

IC252

AMP

IC270 1

8Bit data

HDMI

HDMI DAC L

G 8bit data bus

R 8bit data bus

IC1380

IC1381

23 HDMI DAC R

SIF+ SIFIN+

191

TUNER CVBS IN

IC3300

AUDIO MATRIX

SIF+

AV2 L OUT VCTP

AV1 L OUT VCTP

AV1 R OUT VCTP

AV2 R OUT VCTP

17 AM IRD YUV/DVI R IN

AM IRD YUV/DVI L IN 15

AV1 21 PIN SCART

AV1 R OUT

AV1 L OUT

L OUT 3

AV3 Y IN

AV3 C IN

AV3 CVBS IN

AV3 L IN

AV3 R IN

184

187

188

HP LEFT

HP RIGHT

28 SP L

SP R

174 PR IN

172 PB IN

173 Y IN

IRD AV2 RED/C IN

IRD AV2 BLUE IN

IRD AV2 GREEN IN

181

179

180

IC1501

R OUT 1

R IN 2

L IN 6

B IN 7

G IN 11

R IN 15

CVBS IN 20

CVBS OUT 19

L -

L +

R -

R +

B 8bit data bus

73-66

65-58

57-50

190

178

177

176

189

MCLK

I2SCL

I2SDI

I2SWS

AV2 CVBS IN

AV2 L IN

AV2 R IN

AV1 RED IN

AV1 GREEN IN

AV1 BLUE IN

AV1 LEFT IN

AV1 RIGHT IN

AV1 CVBS IN

TX0-

TX0+

TX1-

TX1+

TX2-

TX2+

TCLK-

TCLK+

TX3-

TX3+

194

195

A-BOARD

141

140

138

137

135

134

132

131

129

128

TO LCD PANEL

JK3002

YUV/DVI P0 R IN

YUV/DVI P0 L IN

D/A CONVERTER OP AMP

Q3204

Q3205

Q3201

Q3202

Q123Q122

VIDEO PROCESSOR

HP AMPLIFIER

AV2 21 PIN SCART

L OUT 3

R OUT 1

R IN 2

L IN 6

B IN 7

G IN 11

R IN/C IN 15

CVBS IN 20

CVBS OUT 19

AV2 CVBS OUT VCTP

AV1 CVBS OUT VCTP

AV2 R OUT

AV2 L OUT

39,40,43,44,

47,48,51,52

144-140,137,136,133

132-129,126-123

119-116,113-110

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