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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.
Is the supplied voltage 120V~, 60Hz?
Is the voltage between the FILTER ASSEMBLY
connectors and 120V~, 60Hz
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).
Check fuse (single
harness) and replace if
blown. Otherwise, replace
MAIN PWB ASSEMBLY.
Reconnect.
Replace the CABLE
(HARNESS)
NO POWER
WARNING
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