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Mio336i PDA Maintenance
Mio336i PDA Maintenance
LCD Display Abnormal
Display
ok?
Try another known good LCD module.
Replace faulty parts and test after
each replacement.
Yes
No
No
Yes
Correct it.
Board-level
Troubleshooting
8.3 LCD Display Abnormal
The LCD shows abnormal picture.
1. Push reset button and turn on the system power again.
2. Remove all external I/O device.
3. Check the LCD panel connector is connected property.
Display
ok?
Check the following parts for cold solder or one of the
following parts on the mother-board may be defective, use
an oscilloscope to check the following signal or replace the
parts one at a time and test after each replacement.
Parts
Signals
U1
U19
U28
RP2
RP3
R23~R25
R148
R90~R97
R99
R101~R103
L25~L28
R220
L13
J4
VCC3_LCD
VCC_5V
VCC_-15
VCC_+15
LCD_R[1:5]
LCD_G[0:5]
LCD_B[1:5]
LCD_MCK
LCD_DE
LCD_OEN
BL_PWM
BL_ON/OFF#
Replace mother board or into
board level troubleshooting.
Содержание Mio336i
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