LG VX5400 Service Manual page 110

Tri band, quad mode [pcs/gps/cellular/amps] cdma mobile phone
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Checking Flow
Does LCD work properly?
Check C712 Voltage
D[0:7], LCD_RESET/,
LCD_RS/,M LCD_CS/,
SLCD_CS/,OE2/,WE2/
Check CON700 soldering
LGE Internal Use Only
START
Yes
= 2.85V?
Yes
Check the
Control signal
Yes
No
Yes
LCD display will
work properly
No
Change the FPCB
Yes
Does LCD work properly?
Yes
LCD Display will work
Soldering
No
F700,F701,F704,F705
R700,R701,R702,R703,R704
Is good?
Yes
Re-soldering CON700
Copyright@2007 LG Electronics. Inc. All right reserved.
-110-
No
Change the LCD Module
Yes
No
Does LCD work properly?
Yes
Re-soldering
No
F700,F701,F704,F705
R700,R701,R702,R703
,R704
Only for training and serving purposes

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