LG KM710 Service Manual - Page 97
LG KM710 Manual
![]() |
View all LG KM710 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 97 highlights
4. Trouble Shooting z MAIN KEY Backlight LED Trouble START Is the Voltage level VBAT 3.35 ~4.2? YES Are all LEDs LED_CA1~3,SLED_CA1~2 (Slide key) Working? YES Check the LCD display Trouble shooting YES NO Charge Battery NO Check the soldering of U700 not working NO Go to LCD Display Trouble shooting LCD_BL_ENM & LCD_BL_ENS of U102(Main) is Working? YES Backlight will work properly NO Check the condition If problem, Replace U102(Main) LGE Internal Use Only - 98 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes
![](/manual_guide/products/lg-km710-service-manual-5eb4dc9/97.png)
- 98 -
4. Trouble Shooting
z
MAIN KEY Backlight LED Trouble
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc.
All right reserved.
Only for training and service purposes
NO
Is the Voltage level VBAT
3.35 ~4.2?
Backlight will work
properl
y
START
YES
Check the soldering of
U700 not workin
g
NO
Are all LEDs
LED_CA1~3,SLED_CA1~2
(Slide key) Working
?
Charge Battery
YE
S
LCD_BL_ENM &
LCD_BL_ENS of
U102(Main) is
Working?
YE
S
Check the condition
If problem, Replace U102(Main
)
N
O
YE
S
NO
Check the LCD display
Trouble shootin
g
Go to LCD Display
Trouble shooting