Fuji Xerox DocuCentre SC2020 Service Manual page 153

Replacement parts list
Possibilit
No. Component y
1 MOB ADC Sensor Assembly H
2 IBT Belt L
3 IBT Cleaner L
4 Toner Cartridge L
5 Drum Cartridge L
6 LPH Unit L
7 1st BTR Unit L
8 Deve Housing Assembly L
9 HVPS (BCR) L
10 HVPS (Deve) L
11 HVPS (1st/2nd BTR) L
12 IBT Cleaner Unit L
13 Dispense Unit L
14 LPH FFC L
15 DRIVE PWB L
Procedure
NOTE: To prevent light-induced fatigue, cover the Drum with a black sheet when removing the Drum. In
addition, do not touch the Drum surface.
Perform Procon Print of CE Mode and check from 755-003 to 755-006, 752-078 to 752-081, 755-023 to
755-026. Are the results all 0?
Y N
Perform Procon Print of CE Mode and check from 755-003 to 755-006, 752-078 to 752-081, 755-
023 to 755-026. Run Test Pattern>Prccon ON Print. Check the number of Fail occurrences by using
NVM Read/Write again. Did the number of Fail occurrences increase for either color?
Y N
No need to take measures if Fail does not occur after running Procon ON Print a few times.
Check to see if the density of the whole image that was printout from ProCon ON Print is light or the
Front side of FS direction (ADC Patch position) of full surface half-tone of the corresponding color of
Service Mode Test Pattern Print. Is White extremely light?
A
Version 1.1
DC SC2020
Table 1 Table 1
Reason
Unable to detect Patch due to abnormality in ADC
Sensor.
Patch is light due to deterioration and contamina-
tion of the IBT Belt.
Patch is light due to contamination of the IBT Belt.
Patch is light due to shortage in the Toner.
Patch is light due to contamination of BCR and
deterioration of the Drum.(When the exchange dis-
play comes out in UI, exchange.)
Patch is light due to contamination of LPH and poor
light intensity.
The image is light due to 1st BTR Retract malfunc-
tion or the Patch is light due to contamination of 1st
BTR Roll.
Patch is light due to eccentric rotation and MOS
malfunction.(When the exchange display comes
out in UI, exchange.)
Patch is light due to application malfunction.
Patch is light due to application malfunction.
Patch is light due to application malfunction.
Patch is light due to tearing of the blade.
Patch is light due to Toner supply malfunction.
Patch is light due to LPH signal malfunction.
Patch is light due to MCU abnormality.
A
Y N
There is a possibility that only ADC Patch is light. Check to see if there is no uncleanness,
adhering substance, scratch on the Front side (ADC Parch position) of IBT Belt and 1st BTR.
Is IBT Belt, 1st BTR normal?
Y N
There is a possibility of ADC Sensor abnormality. Turn OFF the power and check the fol-
lowing connections for open circuits, short circuits, and poor contacts.
• Between MOB ADC Sensor (R-RAD)
• Between MOB ADC Sensor (R-RAD LOW)
Is the conduction normal?
Y N
Check MOB ADC Sensor Assembly installation and if there is no uncleanness and
no foreign substance contamination to the detecting element, replace the MOB ADC
Sensor Assembly.
• Connect the connector.
• Replace broken wire, parts that went short (such as PWB).
Replace the following parts.
• Replace the IBT Belt.
NOTE: Perform Auto Registration from UI-Diag if IBT Belt is replaced.
• IBT Belt Cleaner (PL 6.2)
• 1st BTR Roll (PL 6.3)
• Perform processing of troubleshooting that corresponds to the image quality trouble that
should be handled first.
• Replace if there is no Toner in the Toner Cartridge of the corresponding color.
• Replace if there is any uncleanness, adhering substance, scratch on the Front side of Drum FS
direction of Drum Cartridge of the corresponding color.
• Replace if there is any uncleanness, adhering substance, scratch on the Front side of Drum FS
direction of BCR of the corresponding color.
• Replace if the Toner close to the Front of SF direction on Deve Roll of the corresponding color,
or if the Toner seems low after turning the Gear clockwise.
• If the Dispense is not driven after running Digital Output [093-001] (Toner Dispense Motor Y)/
[093-002] (Toner Dispense Motor M) / [093-003] (Toner Dispense Motor C) / [093-004] (Toner
Dispense Motor K), replace the Toner Dispense Motor.
• Turn the Power OFF, check the corresponding color LPH, and clean or replace the LPS if it is
dirty. (PL 2.1)
• Turn the Power OFF, check for break of wire, short, half-connection between each HVPS and
each parts. If there is any conduction failure, replace the connector connection, parts that was
broken or short.
View the corresponding FIP and repair. Replace the parts of "Replacement Parts List" if the cause cannot
be specified and restoration process cannot be completed.
05/2014
2-131
J112 and DRIVE PWB
J113 and DRIVE PWB
(PL 6.1)
(PL 6.3)
(PL 8.1)
(PL 8.3)
(PL 5.1)
(PL 5.3)
2.2.4 Common FIP
Troubleshooting
J414
J414
(PL 5.1)