Specifications

2. SERVICE CALL CONDITION
2.1 CODE #11 — EXPOSURE LAMP ERROR
- Definition -
• The feedback signal becomes higher than 4.2 volts (r.m.s.) for 1.0 sec-
ond when the exposure lamp is on.
• The feedback signal becomes higher than 1.0 volt (r.m.s.) for 1.0 sec-
ond when the exposure lamp is off.
- Possible Causes -
• Exposure lamp open
• Thermoswitch open
• AC drive board defective
• Main board defective
• DC harness defective
- Action -
Turn the main switch off and on.
Exposure lamp off?
Yes No
Check the voltage at CN122-10 on the main board.
24V Less than 20V
Replace the main board.
Replace the ac drive board.
Is the exposure lamp circuit open?
No Open
Replace the exposure lamp.
Is the thermoswitch open or defective?
No Open Defective
Replace the thermoswitch.
1 December 1990
6-24