Sensor Circuit
Location
Sensor Sensor or Switch
Name
Message Error
Operation Panel PS102 Document [CHECK
DOCUMENT]
Operation Panel PS103
Paper Feed
[REMOVE
DOCUMENT]
High Voltage PCB SW101 Printer Open [COVER OPEN]
High Voltage PCB OPC Set
[CHECK DRUM]
High Voltage PCB PC201 Register [FAILED PICK UP]
Motor Driver PCB PS1 Paper [OUT OF PAPER]
Sensor PCB PS50 Exit [PAPER JAMMED]
Analog PCB PS200 Toner
[TONER EMPTY] /
[TONER LOW]
[CHANGE DRUM]
Analog PCB SW200 Hook ————
Note:
See TEST FUNCTIONS - SENSOR CHECK SECTION for the sensor test.
(#815 of Service Mode test. Refer to TEST FUNCTIONS ().)
7.9.1. DOCUMENT SENSOR....”CHECK DOCUMENT”
The Sensor detects whether or not a document is in place.
When a document is detected, the shelter plate shuts off the sensor light, the photo-transistor
turns OFF, and the input signal of IC101-9 pin becomes a low level. When there is no document,
the shelter plate let the sensor light pass through, the photo-transistor turns ON, and the input
signal of IC101-9 pin becomes a low level.
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