Service Manual AOCn941Splus
38
Key Board---OSD no working
9.3 Software programming step
U402 056G2233 11 IC Pm25LD020C-SCE SIOC-8(150mil) 2M
SMTCR-U402 100GANA9000B21 AOCN941S_NT68168_AUOM190PW01V7_V002
756GJ9CB AA082
MCU ASSY CBPC9NWA1QHJ G3225-1-2
Step1：Connection
1. Connect LPT cable of the PC, the other end of cable to connect ISP programming card（715GT034-B）；
2.VGA cable to Connect the monitor and the tool;
Check flow chart
For the key board
OSD is unstable or not
working
Is Key Pad Board connecting
normally?
Is Button Switch normally?
Is Key Pad Board normally?
Check Main Board
Connect Key Pad Board
Replace Button Switch
Replace Key Pad Board
OK
NG
NG
NG
OK
OK
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