Troubleshooting Guide - IBM 6656HG2 - T 560 - 15" LCD Monitor Service Manual

NO POWER
(POWER INDICATOR OFF)
CHECK J801'S
VOLTAGE
(12V) ?
YES
CHECK
X501'S WAVEFROM
OSCILLATE AS
24MHZ ?
YES
CHECK
U803 PIN 2, 3
WAVEFROM?
YES
CHECK KEY CONTROL
CONNECTOR ROUTINE

TROUBLESHOOTING GUIDE

1. NO POWER
NO
NO
NO
200kHz
12V
40% duty
- 14 -
CHECK ADAPTER,
AND FIND OUT
SHORT POINT OF
EACH DC LINE OF
2.5V AND 3.3V
CHECK X501.
CHECK U803 AND
L805'S OPEN