China GLTM-320B Schematic
GLTM-320B SERVICE MANUAL REV1.0
REVISION 1.0
TFT LCD TELEVISION
GLTM-320B Service Manual
* CAUTION
1. BEFORE SERVICING THE LCD TV
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
2. WHEN REPLACEMENT PARTS ARE REQUIRED, BE SURE TO USE
REPLACEMENT PARTS SPECIFIED BY THE MANUFACTURER.
PREPARED BY GPNC CO.,LTD.
GLTM-320B SERVICE MANUAL REV1.0
CONTENTS
1. FORMATION AND SPECFICATION OF LCD TV
2. FACTORY MODE
1. Factory Mode enter method
2. Factory Mode Menu
2-1. Option 2 : EEPROM Reset
2-2 Option 4 : TV system setting
3. TROUBLE SHOOTING
A. Power Circuit Trouble Shooting
B. Display Trouble Shooting
1) Analog Trouble Shooting
2) Component (HDMI/S-Video) Trouble Shooting
3) AV1/AV2 (SCART or RCA) Trouble Shooting
C. TV Trouble Shooting
D. FunctionTrouble Shooting
PREPARED BY GPNC CO.,LTD.
GLTM-320B SERVICE MANUAL REV1.0
1. FORMATION AND SPECIFICATION OF THE LCD TV
LVDS Cable
A
MAIN BOARD
1
OSD Cable
G
Inverter Cable (L/R)
E
3
2
A/V BOARD
POWER
D
10Pin Power cable
C
9Pin Power cable
Power In-let
B
4
IR BOARD
IR Cable
OSD BOARD
5
PARTS
NO Q'TY
1 MAIN BOARD 1
2 TUNER BOARD 1
3 POWER BOARD 1
4 IR BOARD 1
5 OSD BOARD 1
EXTERNAL CABLE CONNECTION
NO Q'TY
LVDS CABLE
A1
POWER IN-LET
B1
POWER CABLE 9 PIN 180MM
C2
POWER CABLE 10 PIN 120MM
D1
INVERTER CABLE
E 2 Inverter Cable connection location is not defined Left/Right
IR CABLE
F 1 IR Cable & OSD Cable pin assignment are same
OSD CABLE
G 1 You can use it for both
H 2 LEFT/RIGHT
SPEAKER CABLE
F
DESC
DESC
Speaker Cable
H
Up - Left
Down -
Remarks
PREPARED BY GPNC CO.,LTD.
GLTM-320B SERVICE MANUAL REV1.0
2. FACTORY MODE
* Be careful to use factory manual, You may loss firmware in TV by mis-use.
1. Factory Mode enter method
Press menu button of TV OSD button and menu button of remote control together for 10seconds
(You should two buttons at same time for 10 seconds - You may see user OSD menu on display first then 5seconds later,
You can see factory OSD menu on display)
2. Factory Mode Menu
2-1. Option 2 : EEPROM Reset
Option 2 (EEPROM Reset)
Option 4 (Tuner system setting)
Firmware Version
1. It is same like RESET of Computer
2. If you change No from 0->1, All of information
like channel storage, Picture/Sound adjustment
you set in TV will be re-set
3. Power will be off by itself
4. Then you can power on
5. Setting TV scan, Picture/Sound adjustment
=> Use when TV has problem to scan or when
OSD menu button doesn't working by button of TV
and remote control button both.
PREPARED BY GPNC CO.,LTD.
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