09/2007
2-13
Phaser 8860/8860MFP Service Manual
4,0xx.6x, 5,0xx.4x
Error Messages and Codes
Initial Issue
4,0xx.6x Process Control Program Faults
A firmware communications error has occurred. The following troubleshooting procedure
applies to these errors:
Initial Actions
• Reset NVRAM and retest.
• If the problem persists, follow the procedure below.
Primary Causes
The troubleshooting table lists parts and wiring referenced in the troubleshooting procedure.
Troubleshooting Procedure
5,0xx.4x Y-Axis Sub-System Faults
The following troubleshooting procedure applies to these errors:
Initial Actions
• Check for obstructions or debris.
• If the problem persists, follow the procedure below.
Primary Causes
The troubleshooting table lists parts and wiring referenced in the troubleshooting procedure.
Troubleshooting Procedure
Table 1 4,0xx.6x Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack References
NVRAM, PL 5.0
Table 2 Process Control Program Faults Troubleshooting Procedure
Step Questions or Actions Yes No
1 Reseat all Electronics Module connec-
tions.
Does the problem persist?
Go to Step 2. Complete.
2 Check ground integrity.
Are the system grounds connected?
Reset NVRAM. If the
error persists,
replace the NVRAM
device (REP 5.0.9).
Reconnect the sys-
tem grounds.
Y-Axis Sub-System Faults
5,001.41 The Drum rotated once without a Drum Home Position Sensor activation.
5,002.42 The Y-Axis Encoder is faulty, or the Drum has stalled.
5,003.43 Problem in the Y-Axis sub-system.
5,004.44 Problem with the Y-Axis motion sub-system.
Table 1 5,0xx.4x Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack References
Y- A x i s B e l t , PL 2.0
Y--Axis Motor, PL 4.0 Electronics Module Power - Figure 9
Drum Assembly (Encoder) Right Side Harness / I/O Control - Figure 10
Table 2 Y-Axis Sub-System Faults Troubleshooting Procedure
Step Questions or Actions Yes No
1 Test the Y-Axis Encoder.
Run the Service Diagnostics Y-Axis
Encoder test from the Monitor menu.
Did the test pass?
Go to Step 2. Go to Step 3.
2 Check the Y-Axis Motor connection (P/
J18).
Is the wiring faulty?
Replace the wiring. Go to Step 4.
3 Check the Y-Axis Encoder wiring.
Is the wiring faulty?
Replace the wiring. Replace the Drum
Assy (REP 2.0.3).
4 Test the Y-Axis Drive.
Run the Service Diagnostics Y-Axis Drive
test.
Did the test pass?
Go to Step 5. Replace the Y-Axis
Motor (REP 4.0.11).
5 Test Y-Axis Belt tension.
Run the Service Diagnostics Y-Axis Belt
Tension test.
Did the test pass?
Go to Step 6. Replace the Y-Axis
Belt (REP 2.0.4).