Service Call Conditions; Code #11 - Exposure Lamp Error - Ricoh A151 Field Service Manual

2. SERVICE CALL CONDITIONS

2.1 CODE #11 — EXPOSURE LAMP ERROR
- 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 -
Exposure lamp open
•
Thermofuse open
•
Defective ac drive board
•
Defective main board
•
Defective dc harness
•
CN114 on the main board or CN401 on the ac drive board is not
•
correctly connected.
- Action -
Turn the main switch off and on.
Exposure lamp off?
Yes No
Check the voltage at CN114-3 on the main board.
24 volts Less than 20 volts
Replace the main board.
Replace the ac drive board.
Check that CN114 on the main board and CN401 on the ac drive board are
correctly connected?
Correct Incorrect
' Connect CN114 and CN401
Is the exposure lamp circuit open?
No Open
FSM 6-25 A151/A152