5-5
Troubleshooting
LCD module is connected
properly to the LCD connector
on the PCB?
LCD connector is
well soldered onto
PCB?
The LCD driver
source voltage is 3V
(U701 pin 5)?
YES
LCD display is not working.
Replace LCD module.
Reassemble LCD module
with LCD connector.
NO
Re-solder the LCD connector.
NO
YES
Replace U701.
END
YES
NO
5.5 LCD Trouble
Summary of Contents for BD38
Page 1: ...GSM PHONE SERVICE MANUAL MODEL BD38 1st version 2004 06 09 ...
Page 2: ...Rev 1 00 ...
Page 32: ...5 14 Troubleshooting ...
Page 35: ...6 PCB Diagram 6 1 Main PCB 6 1 Top View ...
Page 36: ...6 2 PCB Diagram Bottom View ...
Page 42: ...8 Exploded View and Parts List 8 1 Exploded View Main 8 1 1 Main 8 1 ...
Page 46: ...9 Block Diagram 9 1 BB Block Diagram 9 1 ...
Page 47: ...Block Diagram 9 2 RF Block Diagram 9 2 ...
Page 48: ...10 Schematic Diagram 10 1 Key Pad 10 1 ...
Page 49: ...10 2 Schematic Diagram 10 2 Main Board 10 2 1 Chipset ...
Page 50: ...10 3 Schematic Diagram 10 2 2 Memory Melody ...
Page 51: ...10 4 Schematic Diagram 10 2 3 Audio SIM ...
Page 52: ...10 5 Schematic Diagram 10 2 4 Connector ...
Page 53: ...10 6 Schematic Diagram 10 3 RF Top Schematic 10 3 1 RF PAM ...