Specifications

Chapter 6 : FRU Replacement and Fault
Isolation Procedures
The printer troubleshooting path
This chapter is for on-site or depot repair, where tools and replacement FRUs are available.
When directed to the Level 1 or Level 2 procedures, read the notes before beginning the
procedure. The initial analysis of each FIP lists the possible FRU failures
What Fault Codes Mean
Fault codes, such as “Fault Code U2,” are messages that indicate a printer problem. The fault
codes do not display on the front panel of the printer; rather they are displayed on the LCD of
the Diagnostic tool. If you do not have a Diagnostic tool, these messages do not apply.
What “DG
xx
” Means
In the following sections, you will see such instructions as:
Use DG02 to check the exit sensor.
DG02 is a test you can perform using the Diagnostic tool. If you do not have a Diagnostic tool,
read the notes at the beginning of the FIP for other methods of diagnosing the problem
What “Notes” Mean
The notes at the beginning of the FIP contain the following information:
1. Instructions for instances where the Diagnostic Tool is not available
2. Pointers to any control panel messages
3. Other reasons why this FIP should be employed
4. General comments
Using Level 1 FIPs
Level 1 FIPs start at Section 6.2.1 Problem in Nonvolatile RAM: Fault/Status Code U6 , and run
through Section 6.4.1.
Image Quality Problems . The flow chart directs you through the
troubleshooting process.