System Controller Error Codes; Table 1-28 System Controller Error Code Table - Xerox DOCUPRINT N4525 Service Quick Reference Manual

System Controller Error Codes

The following error codes are considered to be Power-On Boot Codes.
Most Repair Analysis Procedures assume there is no malfunction in the System Controller
Board. If you are unable to correct a problem using the previous error code table, it is
recommended that you now check the System Controller Error Blink Codes per the table
below. In some instances, the Control Panel Display may not be sufficiently functional to
accurately show error codes/messages. Before replacing the System Controller, please
refer to this table for additional help in troubleshooting.
The System Controller Board is programmed to display simple error codes by means of a
single red LED (CR 1) near the connecter edge of the board. The LED blinking pattern
will indicate various detected failures connected with the board and/or accessories
installed on the board. The System Controller Error Code Table below will help you
pinpoint the fault. If all else fails, replace the System Controller Board.

Table 1-28 System Controller Error Code Table

Control Panel Message
0001 - ESS
0001 - BASE RAM
0001 - BASE ROM
0001 - ASIC
0001 - TIMER
0001 - PWPM
0001 - DMA
0001 - COMM or
0001 - USB
1000 - IOT
0010 - DISK
1-44 DocuPrint N4525 Network Laser Printer - Service Guide
LED # Blinks,
Followed by 1
sec. Off Comment
1 System Controller Board major failure. Replace
System Controller Board. Go to RRP 1-73.
2 System Controller Board RAM failure. Replace
System Controller Board. Go to RRP 1-73.
3 System Controller Board boot ROM. Replace
System Controller Board. Go to RRP 1-73.
4 System Controller Board ASIC failure. Replace
System Controller Board. Go to RRP 1-73.
4 System Controller Board Timer failure. Replace
System Controller Board. Go to RRP 1-73.
5 System Controller Board PWPM failure. Replace
System Controller Board. Go to RRP 1-73.
5 System Controller Board DMA failure. Replace
System Controller Board. Go to RRP 1-73.
6 System Controller Board parallel or USB port failure.
Replace System Controller Board. Go to RRP 1-73.
System Controller - IOT (Print Engine)
8


handshake failure. Remove and reinstall the
System Controller Board (RRP 1-73)
Replace the System Controller Board (RRP


1-73)
Replace the Print Engine Controller Board


(RRP 1-72)
9 Hard disk failure.


Format Hard Disk (Call Technical Support for


assistance)
Replace the Hard Disk (Instructions supplied


with the replacement hard disk)
Replace the Print Engine Controller Board


(RRP 1-73)