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14-703A to 14-706A, 712A, 714A, 716A, 718A Failure To
Calibrate RAP (32-55 ppm)
Initial Actions
Make sure that the correct RAP is used. To identify the correct RAP to use, go to the 14-703 to
14-706, 712, 714, 716, 718 Failure to Calibrate Entry RAP.
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.
Switch off the machine, then switch on the machine, GP 14. The fault is still present.
Y
N
Perform SCP 6 Final Actions.
Go to Flag 1 and Flag 2. Check for the following voltages at P/J135 on the power distribution
PWB:
•
+24V between pins 1 and 3, Flag 1.
•
+24V between pins 2 and 4, Flag 1.
•
+12V between pins 6 and 8, Flag 2.
•
+3.3V between pins 5 and 7, Flag 2.
The voltages are good.
Y
N
Refer to the following:
•
Go to 01B 0V Distribution RAP, refer to the 24V return and 12V return.
•
01G +24V Distribution RAP.
•
01F +12V Distribution RAP.
Perform dC640 Video Path Diagnostics, Scanner Video Test. The machine passes the diag-
nostic check.
Y
N
Check that all scanner harness connectors are correctly seated and that all wiring is in a
good condition. If necessary install new parts.
Install any new parts indicated by the diagnostic checks.
Remove the CVT glass and document glass REP 14.6A. Check that all optics mirrors are
securely attached and correctly aligned, Figure 1. Check that the light path to the CCD array is
clear of obstructions. The optical path is good.
Y
N
Correct the mirror alignment, clear the light path or install a new scanner, PL 14.20 Item 1.
Check the CCD assembly for loose electrical connections or misalignment of the assembly.
The CCD assembly is good.
Y
N
Correct the problem or install a new scanner, PL 14.20 Item 1.
Check the scanner PWB for loose connections or damage. The scanner PWB is good.
Status Indicator RAPs
14-703A to 14-706A, 712A, 714A, 716A, 718A
Y
N
Install a new scanner PWB, PL 14.25 Item 4.
Check the wiring between P/J135 and P/J455, also between P/J135 and P/J450, refer to GP
7. The wiring is good.
Y
N
Repair the wiring, REP 1.2.
Check the tension of the scanner drive belt, refer to REP 14.11A. A loose drive belt can cause
the belt to slip. The scanner drive belt is good.
Y
N
Refer to REP 14.11A Scan Motor. Re-position the scan motor so that the belt does not
slip.
Inspect the calibration strips on the front underside of the CVT glass and document glass. The
calibration strips are undamaged.
Y
N
Install a new CVT glass, PL 14.20 Item 4 and / or a new document glass, PL 14.20 Item 5.
Clean the calibration strips, using a cleaning cloth dampened with water. Re-assemble the
parts. Turn on the machine, GP 14. The fault is still present.
Y
N
Perform SCP 6 Final Actions.
Install new parts in the following order:
•
Exposure lamp, PL 14.25 Item 9.
•
Image processing module / CCD PWB harness, PL 3.20 Item 9.
•
Scanner PWB, PL 14.25 Item 4.
•
Image processing PWB, PL 3.20 Item 3.
•
Scanner, PL 14.20 Item 1.
August 2007
2-680
WorkCentre 5687 Family
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