Blank Print; Blank Print (Black) - Xerox DocuPrint C55 Service Manual

Defect Name / Description
8. BLANK PRINT (NO IMAGE IS PRESENT,
THE ENTIRE PRINT IS WHITE).

9. BLANK PRINT (BLACK).

DocuPrint C55/C55mp/[NC60]
Possible Causes
1. No Developer Drive
2. ESS or ESS components not seated.
3. Constant Magnetic Roll cleaning.
4. No Horizontal Sync from IOT (continuous
blank prints when printing).
5. No Vertical Sync from IOT (continuous blank
prints when printing).
6. No Data signals from ESS.
7. PCU PWB defective.
1. No Black Developer Clutch (No Black
development).
2. Constant Black Magnetic Roll cleaning.
2/99
3-7
Corrective Action
1. Developer Drive Belts broken.
replace.
Drive System not camming in when the ROS
is closed. Check for binding or mechanical
interference.
2. Slide ESS out of printer. Run IOT Test
pattern. If OK, reseat all plug in components
on the ESS reinstall ESS and recheck. If
prints are blank with ESS removed, continue
with this procedure.
3. Refer to Section 7, BSD 9.6 and check the
Magnetic Roll Cleaner Solenoid for an open.
If the On signal (CN115-10) does not go low
during print, replace the PCU PWB.
4. Refer to Section 7, BSD 6 and check the
HSYNC signal line (CN104-9) for an open.
5. Refer to Section 7, BSD 6 and check the
VSYNC signal line (CN104-10) for an open.
6. Refer to Section 7, BSD 6 and check the
DATA signal line (CN104-11) for an open.
7. Replace PCU PWB.
1. Refer to Section 7, BSD 9.7 and check the
Black Developer Clutch for an open. If the
ON signal (CN115-2) does not go low during
print, replace the PCU PWB.
2. Cleaning Cam timing incorrect, refer to the
Magnetic Roller Cleaning Cams adjustment
(ADJ 6.1) and perform the check.
IMAGE QUALITY RAPs
IMAGE QUALITY DEFECTS
Repair or