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1 Nov. '87
2. SERVICE CALL CONDITIONS
2-1
E1 EXPOSURE
- Definition -
Lights if the input from the original ID sensor is less than 0.3 volt for ap-
proximately 1 second after the exposure lamp turns on.
- Possible Causes -
Exposure lamp broken
Original ID sensor broken
Lamp control PCB defective
Main PCB defective
- Action -
Does the exposure lamp turn on?
N
Y
1
Is the voltage at CN102-6 on the main PCB less than 0.3 volt?
Replace the original ID sensor
Replace the main PCB.
Is the
exposure lamp / optics thermoswitch
N
Y
Replace the exposure lamp/optics thermoswitch.
Does CNI14-4 drop from +24 to O volt when the "Start"
N
Y
Replace the lamp control PCB.
Replace the main PCB.
open?
4-22
key is pressed?
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