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ELECTRICAL TROUBLESHOOTING GUIDE
2. POWER KEY BOARD
POWER cord insert.
Turn power on?
YES
When you press
power key, "WELCOME"
display ok?
YES
Power key board ok.
NO
CN931, PN901 cable
connection ok?
CN931 pin2 power ok?
NO
Check FRONT board.
2-41
NO
YES
NO
Connect 2p Harness cable
(PN901).
Check MAIN
and SMPS board.
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