Xerox DOCUPRINT N4525 Service Quick Reference Manual page 116

RAP 1-39
Error Code H4-1
There is a problem with paper fed from Tray 1.
Tray 1 out of paper or size/type incorrect for printed job.
Table 1-67 Error Code H4-1 Load Tray 1
Step Actions and Questions
1 Tray 1 PAPER GUIDE CHECK
Remove Tray 1 and inspect the Paper Guides.
Are the Paper Guides adjusted so they rest
against the stack of paper?
2 Tray 1 SIZE SWITCH ACTUATOR
With Tray 1 removed, inspect the Size Switch Actuator
located on the rear of the Bin.
Is the Actuator broken or chipped?
3 Tray 1 PAPER SIZE SENSOR TEST
1. Enter Diagnostics Mode.
2. From the Main Menu, select Tray Size Test / Tray 1
Size.
3. Press [4] to start, [0] to stop.
4. Take note of the displayed result.
Does the paper size displayed match the size
set in the Bin?
4 REGISTRATION SENSOR TEST
1. Enter Diagnostics Mode.
2. From the Main Menu, select Comp Input Test / IOT
Unit / Reg. Sensor.
3. Press [4] to start, [0] to stop.
4. Insert, then remove, a sheet of paper into the
Registration Sensor.
Does the Control Panel display "with paper"
when you insert the paper into the Registration
Sensor, and is "without paper" displayed when
you remove the paper?
5 PRINT ENGINE CONTROLLER BOARD
REPLACEMENT
Replace the Print Engine Controller Board (RRP 1-72).
Does the error code appear?
6 The following printer components and areas are
associated with this specific problem. One or more of
these components or areas may have failed partially or
completely. If you cannot isolate this problem using the
steps in this Repair Analysis Procedure, replace each
component or troubleshoot each area listed below, one at
a time, until you isolate and solve the problem.
Wiring and connectors linking the components


Input/Output Board (RRP 1-70).


1-94 DocuPrint N4525 Network Laser Printer - Service Guide
Load Tray 1
.
Yes
Go to step 2
Replace the
Actuator
Assembly
Go to step 4
Go to step 5
Go to step 6
No
Adjust the
Paper Guides
Go to step 3
Replace the
Tray 1 Paper
Size Sensor
Replace the
Registration
Sensor
Problem
solved