Trouble Shooting Flow Chart; Abnormal Display - Olevia 237T Service Manual

TITLE
LCD TV For 237-T11

4. Trouble shooting flow chart

4-1 Display Problems
Note: Refer to the Wiring Diagram during troubleshooting for a visual of inter-connections when
indicated by this
Trouble Condition
Display Problems
Service Manual
symbol.

Abnormal display

1. No video Image
2. Video noise
3. Display flashes
4. Abnomal color
Bright spots
Dark spots
Backlight
uniformity
Light leakage
Spot & Simi
Ghosting
Dust & Scratch
Company Confidential-DRAFT
Doc No.
Version
Page
Check Item
Step1 ：
1. Check for a loose video
cable connection
2. Check video cable
3. Check source settings
4. Check TV input
OK
Step2 ：
Check for a loose or broken
connection between
Con.J11from system board
to Panel LVDS connection.
OK
Step3 ：
1. Check System board
CN1-pin1 to ground = 5V,
pin3 to ground = 5V or
D4, D64 lighting
2. Check System Board
CN2-pin2 to ground = 12V
Step1:
Fai
Check damage to
panel
OK
Step2:
Fai
Check for a loose or
broken connection
between Con.J11from
system board to Panel
LVDS connection.
SM_237-T11_19Nov07
1.2
12/72
Replace Material
1. Reconnect cable
2. Replace cable
Fai
3. Change source
lai
settings
4. Change TV input
Secure connection
l
Fai
or replace the
LVDS wire
l
Fai
Replace System
board if voltage
is missing.
l
Replace Panel
l
Replace LVDS
connect wire
Test
Finish
Test