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5.5 LCD Trouble
5-5
Troubleshooting
LCD module is connected
propery to the LCD connector
on the PCB?
LCD connector is
well soldered onto
PCB?
The LCD driver
source voltage is 3V
(U622:PIN5)?
YES
LCD display is not working.
Replace LCD module.
Reassemble LCD module
with LCD connector.
NO
Re-solder the LCD connector.
NO
YES
Replace U622.
END
YES
NO
Содержание GSM ST11
Страница 1: ...GSM PHONE SERVICE MANUAL MODEL ST11 ...
Страница 2: ...Rev 1 00 ...
Страница 6: ...1 2 Introduction Memo ...
Страница 15: ...3 4 Exploded View and Parts List 3 4 1 Exploded View 3 5 ...
Страница 41: ...Troubleshooting Memo 5 20 ...
Страница 42: ...6 Block Diagram 6 1 BB Block Diagram 6 1 ...
Страница 43: ...6 2 Block Diagram 6 2 RF Block Diagram ...
Страница 51: ...7 8 Schematic Diagram Memo ...
Страница 52: ...8 PCB Diagram 8 1 Main PCB 8 1 Top View ...
Страница 53: ...8 2 PCB Diagram Bottom View ...
Страница 60: ...9 7 Electrical Parts List Memo ...