TITLE
Service Manual
LCD TV For 237-T11
Doc No.
SM_237-T11_19Nov07
Version
1.2
Page
13/72
Company Confidential-DRAFT
4-2 Abnormal Power On/Off
Abnormal Power
Off
Shut down
Source can’t
switch
Abnormal Power
On/Off
No Power
Replace System
board
Replace Keypad
board
Fail
Replace Power
supply
Fail
Fail
OK
OK
Test
Finish
Trouble Condition
Check Item
Replace Material
Test
Step3
：
Check System Board
CN1 pin1 to ground = 5Vs,
and pin3 to ground = 5V,
Check D4, D64 lighting?
Step2
：
Check Keypad board
CN1-pin1 to ground =
5V or Check D1
lighting?
Step1:
Check Power Supply, Con.
J101–pin 1 to ground = 5V
Con CN1 pin 3 to ground =
5V
Note: Before
proceeding
confirm that
Power cable is
connected and
that proper
voltage is being
fed to TV. (Check
power switch
located next to
power input and
confirm that it’s
ON.)
