- 41 -
PCB Failure
- Check the input voltage of
PCB SMPS (input check-
point : 230V )
- Check the output voltage of
PCB SMPS (Output check-
point : 5V/12V )
Replace FUSE
Replace Relay
Replace TCO
- TCO Open?
- Check the operating base
voltage(5V) which is appro-
priate for each relay.
Reset the circuit braker or
check main power.
Repair Faulty wiring
or PCB check
- Check Terminal block
voltage(230V).
Replace Safety Relay
- Do all relays operate?
• After Lamp On
- Safety Relay
Contact point ON(12V)?
- Check the operating Base
voltage(0V) of Safety
Relay.
Replace PCB
YES
NO
YES
NO
NO
NO
- Check fuse protecting SMPS
Replace PCB
YES
YES
YES
YES
NO
YES
NO
NO
YES
Replace PCB
YES
NO
4-1-15 PCB Failure
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