Repair Flow Chart - Philips SH4 HP L1740 Service Manual

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HP L1740

Repair Flow Chart

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AC IN
Power Board
Control Board
Scaler Board
LCD Panel
5.0v
No power 3.3v
12v
Gnd
(power indicator off)
14
7
2
10
Connector 1102
NG
Check 12V/5V/3.3V
Bad power board
OK
3.3v
Gnd 5.0v
NG
Bad Scaler Board Check Scaler Board
Connector1503
OK
OK
Check Control Board
Check Control Wires
Check LCD Panel