Scan Carriage Home Sensor Entry Rap - Xerox WorkCentre 5687 Series Service Manual

14-110 Scan Carriage Home Sensor Entry RAP

14-110. The scanner PWB has not detected the scan carriage in the home position.
Procedure
WARNING
Switch off the electricity to the machine, GP 14. Disconnect the power cord from the
customer supply while performing tasks that do not need electricity. Electricity can
cause death or injury. Moving parts can cause injury.
Identify the speed of the machine, refer to SCP 7 Machine Features. Perform one of the steps
that follow:
• If the speed of the machine is between 35 and 55 ppm, go to the 14-110A Scan Carriage
Home Sensor RAP (32-55 ppm).
• If the speed of the machine is between 65 and 87 ppm, go to the 14-110B Scan Carriage
Home Sensor RAP (65-87 ppm).
WorkCentre 5687 Family
14-110A Scan Carriage Home Sensor RAP (32-55 ppm)
Initial Actions
Make sure that the correct RAP is used. To identify the correct RAP to use, go to the 14-110
Scan Carriage Home Sensor Entry RAP.
Figure 2, check that the scan cables are correctly positioned. If necessary, remove the top
cover, PL 14.20 Item 3 and use a small screwdriver through the access slots to reposition the
cables.
Visually check the alignment of the scan motor through the document glass, the rubber ele-
ment of the motor bracket can fail. If necessary, install a new scan motor bracket, PL 14.25
Item 18. Refer to REP 14.11A Scan Motor.
Procedure
Switch off the electricity to the machine, GP 14. Disconnect the power cord from the
customer supply while performing tasks that do not need electricity. Electricity can
cause death or injury. Moving parts can cause injury.
Go to Flag 3. Check for +24V on P/J135 between pins 1 to 3 and 2 to 4 on the power distribu-
tion PWB. The voltage is good.
Y N
As necessary, perform the steps that follow:
• Go to the 01G +24V Distribution RAP.
• Go to the 01B 0V Distribution RAP, refer to the 24V return.
Go to Flag 3. Check for +12V on P/J135 between pins 6 to 8 on the power distribution PWB.
The voltage is good.
Y N
As necessary, perform the steps that follow:
• Go to 01F +12V Distribution RAP.
• Go to 01B 0V Distribution RAP, refer to the 12V return.
Check that +24V is available in the scanner by entering the dC330 output code 14-005. The
exposure lamp illuminates.
Y N
Go to Flag 3. Check for +24V on P/J455 between pins 1 to 2 and 3 to 4 on the scanner
PWB. Also check for +12V on P/J450 between pins 1 and 2 on the CCD PWB. The volt-
ages are good.
Y N
Check the harnesses between the power distribution PWB, the scanner PWB and
the CCD PWB. If necessary, install new harnesses PL 14.25 Item 13, PL 14.25 Item
23.
Go to the 14D Exposure Lamp Failure RAP.
Check that +5V is available in the scanner by entering the dC330 input code 14-310, actuate
the input module angle sensor by opening and closing the DADH. The display changes.
August 2007
2-669
WARNING
Status Indicator RAPs
14-110, 14-110A