Xerox DOCUPRINT N4525 Service Quick Reference Manual page 325

RAP 6-2
Error Code F4-12
There is a problem at the Horizontal Transport Input Path Sensor.
Logic control on the Print Engine Controller Board sensed that the Horizontal Transport
Input Path Sensor was not actuated within a specified time after the Fuser Exit Sensor was
actuated (SE 31).
Table 6-5 Error Code F4-12
Step Actions and Questions
PATH LOCATION INSPECTION
1
Inspect the position of the sheet of paper entering the
Horizontal Transport.
Has the lead edge of the sheet of paper
actuated the Horizontal Transport Input
Sensor?
2 HORIZONTAL TRANSPORT IN-GATE
SOLENOID TEST
1. Enter Diagnostics Mode.
2. From the Main Menu, select Comp Input Test / Finisher
Unit / H Tran Gate Pull.
3. Press [4] to open the Horizontal Transport In-Gate and
verify it opened.
4. After opening the Horizontal Transport In-Gate, select
Comp Input Test / Finisher Unit / H Tran Gate Push.
5. Press [4] to close the Horizontal Transport In-Gate,
then verify it closed.
Does the Horizontal Transport In-Gate open
when you actuate the "Pull" test, then close
when you actuate the "Push" test?
HORIZONTAL TRANSPORT IN-GATE
3
INSPECTION
1. Inspect the Horizontal Transport In-Gate for damage.
Is the Horizontal Transport In-Gate in good
condition and move freely when you actuate it
by hand?
FINISHER MAIN BOARD REPLACEMENT
4
1. Replace the Finisher Main Board (RRP 6-84).
2. Repeat the Horizontal Transport In-Gate Solenoid Test
in Step 2 above.
Does the Horizontal Transport In-Gate open
when you actuate the "Pull" test, then close
when you actuate the "Push" test?
Volume 6 / Finisher - Error Codes & Messages
Paper Jam
Clear Area E
Yes
Go to step 5
Go to step 3
Go to step 4
Problem
solved
No
Go to step 2
Go to step 7
Replace the
Horizontal
Transport
In-Gate &
retest. If still
NO, go to
step 4.
Replace the
Print Engine
Controller
Board (RRP
1-72) &
retest. If still
NO, go to
step 8.
6-657