Xerox Phaser 6600 Service Manual page 295

077-300 IOT Cover Front Open
Step Check
Possible causative parts:
• Front Cover Sensor (PL18.1.45)
• MCU Board (PL18.1.13)
1 Check the Front Cover Sensor operation
Execute Digital Input diagnostic test 041-302, and check the
Front Cover Sensor operation.
Does it function normally?
2 Check the Front Cover Sensor connection
Check the connection between the Front Cover Sensor and
the MCU Board.
Are P/J145 and P/J14 connected securely?
3 Check the power to the Front Cover Sensor (+5 VDC)
Check if the voltage between the MCU Board ground and the
P/J14-9 pin is about +5 VDC.
077-301 IOT Side Cover Open
Step Check
Possible causative parts:
• Door Interlock Switch (PL19.1.21)
• LVPS (PL18.1.34)
1 Check the Door Interlock Switch operation
Execute Digital Input diagnostic test 041-300, and check the
Door Interlock Switch operation.
Does it function normally?
2 Check the Door Interlock Switch connection
Check the connection between the Door Interlock Switch and
the LVPS.
Is P/J42 connected securely?
3 Check after replacing the Door Interlock Switch
Replace the Door Interlock Switch.
Does the error still occur?
Xerox Internal Use Only
Error Troubleshooting
Yes
Replace the MCU
Board.
Go to step 3.
Replace the Front
Cover Sensor.
Yes
Replace the MCU
Board.
Go to step 3.
Replace the LVPS.
Phaser 6600 and WorkCentre 6605
Service Manual
No
Go to step 2.
Connect P/J145
and P/J14
securely.
Refer to
page 2-223.
No
Go to step 2.
Connect P/J42
securely.
Finished.
2-199