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9
. DIAGNOSIS AND TROUBLESHOOTING
1. Be careful of electric shock if disconnecting parts while troubleshooting.
2. First, check the connection of each electrical terminal with the wiring diagram.
3. If you replace the MAIN PWB ASSEMBLY, reinsert the connectors correctly.
NO
YES
YES
YES
YES
NO
NO
NO
NO
YES
PWB ASSEMBLE, DISPLAY
5
5
1
3
4
5 5
Is the supplied voltage 120 V AC?
Is the voltage between the FILTER ASSEMBLY
connectors
and 120 V AC?
Is the LED lamp on?
Are the connectors
on the PWB loose?
Is wire of the DISPLAY PWB ASSEMBLY
broken?
Replace DISPLAY PWB ASSEMBLY
or repair wire.
Check the fuse or reset
the circuit breaker.
Replace the FILTER
ASSEMBLY (CIRC).
Replace MAIN PWB
ASSEMBLY.
Reconnect.
Replace the CABLE
(HARNESS)
NO POWER
WARNING
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