Panasonic TC-32LX70/70 Guida rapida

Panasonic Service and Technology Company

National Training

TC-32LX70/700, TC37LZ85, and TC-32LX85 LCD Display Television

Technical Guide

Prepared by

Jean Magloire

Panasonic Service and Technology Company

National Training

Warning

This service information is designed for experienced 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 experienced 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.

2008 by Panasonic Services Company

Table of Contents

Subject Page # Subject Page #

Topics 5Self-Check Menu 38

2007 LCD TV Specifications 7Check Point 39

P.C.B Layout (LX700) 8Serviceman Mode 40

P.C.B Layout (LX70) 9Serviceman Mode Menu and Navigation 41

P.C.B Layout (LX700 Pictorial) 10 Adjustment Data 42

P.C.B Layout (LX700 Connectors) 11 SRV-TOOL 43

P.C.B Layout (LX700 LVDS Connector) 12 Voltage chart of AP-board 45

TC-32LX700 Board Description 13 Voltage chart of P and A boards 46

P Board – Main Power Board 15 Voltage chart of DT board 47

Main MPU (Power On Commands) 17 Troubleshooting Signal Problems 49

Standby Operation 19 Picture NG and Sound OK (LX700/LX70 ) 50

SUB Voltages and Over-voltage Protection 21 Picture OK and Sound NG (LX700/LX70) 51

Main Voltages and Over-voltage Protection 22 Picture NG and Sound NG (LX700/LX70 ) 52

Inverter_On Command and Protection 23 No Picture from TV Reception 53

Video Process Block Diagram 25 No Picture 54

Audio Process Block Diagram 27 No Video, Dark Blue Screen 55

MPU SOS Inputs and Blink Codes 29 No Audio 57

Over-Current Protection Circuit 31 No Power 58

Over-Current Protection Circuit 2 33 Power LED Blinks One Time (INV_SOS) 60

Power LED Timing Table 35 Power LED Blinks Three Times (TV_SOS) 61

Self-Check and Reset Function 37 Power LED Blinks Four Times 62

Purposely Left Blank

2008 LCD Television Models 63

Full HD TC-LZ85 & HD TC-LX85 Series 64

Chassis structure (37 Full HD type) 65

Chassis structure (37 HD type) 66

Signal Circuit Block Diagram 67

TC-32LX85 / TC37LZ85 Signal Circuit Block Diagram 68

TC37LZ85 Signal Circuit Block Diagram 69

TC32LX85 Signal Circuit Block Diagram 71

TC37LZ85 Audio Circuit Block Diagram 73

TC32LX85 Audio Circuit Block Diagram 75

Power Supply Overview 77

Power Supply Description 78

Self-Check and Reset Function 80

SOS and Power LED Indication 81

Power LED Blinks 1 Time 82

Power LED Blinks 3 Times 83

Power LED Blinks 4 or 5 Times 84

Power LED Blinks 6 or 7 Times 85

Power LED Blinks 8 or 9 Times 86

Power LED Blinks 1 Time (TC-32LX85) 87

Power LED Blinks 3 Times (TC-32LX85) 88

Power LED Blinks 4 or 5 Times (TC-32LX85) 89

Power LED Blinks 6 or 7 Times (TC-32LX85) 90

Power LED Blinks 8 or 9 Times (TC-32LX85) 91

Picture Defect) 92

Sound Defect 104

Service Information for 2008 models 105

Internal Pattern generator 106

Copy from the TV to the SD Card 109

Copy Data from the SD Card to the TV 115

Copy Self Check Data to the SD Card 117

Local maintenance 120

Picture Refresh Mode 128

Table of Contents

1. Models Comparison

2. Boards Layout

3. Power supply/Standby/Power on

4. Troubleshooting

5. SOS Circuit

6. Video/Audio Processing Circuit

7. Panel Drive Circuit

8. Service Man Mode

9. Self-Check

10.Reset

11.Adjustments

12.Service Information for 2008 models

Topics

Purposely Left Blank

Purposely left blank

2007 LCD TV Specifications

TC-32LX700 TC-32LX70

VIDEO

Screen Size Diagonal (inches) 32 32

Aspect Ratio 16:9 16:9

Number of Pixels 1,049,088 (1,366 x 768) 1,049,088 (1,366 x 768)

Brightness (Panel Luminance) 500 cd/m2 500 cd/m2

Display Capability (1080p, 1080i, 720p, 480P) Y Y

Motion Picture Pro Y —

AUDIO

Speakers Slim squawker x 2, woofer x 2 (L, R) Full-range x 2 (L, R)

Audio Output 20 W (10% THD) 20 W (10% THD)

JACKS

Integrated ATSC Tuner Y Y

SD Memory Card Slot Y (SDHC Compatible) —

HDMI Input 2 2

Composite Video Input 3 (1 side) 3 (1 side)

S-Video Input 2 2

Component Video Input (Y, PB

, PR

) 1 1

Monitor Output 1 1

Digital Audio Output 1 1

Headphone Jack 1 1

32/26LX600

SP V

(HDMI)

KEY Control

P.C.B Layout (LX700)

Differences from LX600:

GS board for SD card slot is added.

The inverter PCB of the LX700 is visible.

SP V

(HDMI)

KEY Control

INV

32LX700

32/26LX60

SP V

(HDMI)

KEY Control

32/26LX70

P.C.B Layout (LX70)

SP V

(HDMI)

KEY Control

Differences from LX60:

Board structure is almost same.

P.C.B Layout (LX700 Pictorial)

10 P Board

AP Board DT BoardG Board

GS Board

A Board Inverter PCB

V Board

Key Control

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