Ricoh FT 4015, Service Manual

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2. SERVICE CALL CONDITIONS
NOTE: 1) E-codes are displayed in the copy counter. The "E" and the "code
number" are displayed alternatively.
2) To clear the service call condition, turn the main switch off and on.
3) When E5 service call conditions occur, for safety reasons they
cannot be cleared by turning the main switch off/on. The following
procedure must be performed to clear these service call conditions.
1. After repairing the machine, turn on the main switch.
2. Enter SP mode 97.
3. Turn the main switch off and on.
CODE #11 — EXPOSURE LAMP ERROR 1
- Definition -
•
The feedback signal becomes higher than 4.2 volts (rms) for 1.0
second when the exposure lamp is on.
•
The feedback signal becomes higher than 1.0 volt (rms) for 1.0
second when the exposure lamp is off.
- Possible Causes -
•
Triac short circuit
•
Exposure lamp open
•
Thermofuse open
CODE #12 — EXPOSURE LAMP ERROR 2
- Definition -
•
The feedback signal falls below 0.5 volt (rms) for 1.0 second when the
exposure lamp is on.
•
The exposure lamp stays on for longer than 25 seconds.
- Possible Causes -
•
Defective ac drive/dc power supply board
•
Defective main control board
•
Defective power supply circuit
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20 December 1996 SERVICE CALL CONDITIONS
7-23