Konica Minolta bizhub 4020 Service Manual page 81

Action
Step 6
1. POR into the Diagnostics menu and perform a feed
test:
Diagnostics Menu >Input Tray Tests >Feed
Test >Tray 1 >Continuous
2. Cancel the test after five pages.
Does the printer successfully feed the five pages into the
output bin?
Step 7
Observe the location of the jammed paper.
Are the first page fed to the output bin, the second page
jammed in the rear door, and the third page jammed in the
input tray?
Step 8
Perform a tray 1 pick/lift motor gearbox service check. See
Tray 1 pick/lift motor gearbox service
Does the error remain?
Step 9
Check the ACM assembly.
Is it free of wear or damage?
Step 10
Check the MPF gearbox
Is it free of wear or damage?
Step 11
Check the main drive gearbox
Is it free of wear or damage?
Step 12
1. Cancel the test after five pages. Make sure that the
media present sensor and flag are properly installed.
2. Check the sensor and flag.
Does the printer successfully feed the five pages into the
output bin?
Step 13
Does the error remain?
bizhub 4020/3320 Service Manual
Yes
Go to step 7.
Go to step 8.
Go to step 9.
check.
Go to step 10.
Go to step 11.
Go to step 12.
Go to step 13.
Contact the next level of
support.
- 80 -
No
Go to step 6.
Replace the trailing
edge sensor. See
Trailing edge sensor
removal.
The problem is solved.
Replace the ACM
assembly. See ACM
assembly removal.
Replace the MPF
gearbox. See MPF
gearbox removal.
Replace the main drive
gearbox. See Main drive
gearbox removal.
Replace the media
present sensor or flag.
See Media present
sensor removal or Media
present sensor flag
removal.
The problem is solved.