Xerox 8850 Service Manual

03/2003
1-10
8850/ 510DP
Status Code Entry Chart
Service Call Procedures
LL-72
No RAP
-Fuser Controller Faults - Line
voltage time out. This may occur
if there are large variations in line
current drawn during Fuser Cali-
bration.
-Fuser Relay (K3) is not closing or -
-+24 VDC is missing
-ACH input is too low or too high
- To reset: switch the Main Power
Switch off, then on,.
• Check that the Line Ser-
vice (ADJ 3.2) is set to
the correct amperage.
• Main PWB (A3)
• Low voltage Power Sup-
ply
• Replace the AC Module
Assembly (A1)
BSD
10.1
PL 1.1
PL
10.2
LL-73 -
LL-74
No RAP
Fuser Warm-up Fault
- Edge Heat Rod (HR1) does not
warm up.
- Unstable Heat Rod current.
To reset: switch off, then on, the
Main Power Switch.
• (HR1) or associated wir-
ing has an intermittent
or open circuit.
• AC Module Assembly
(A1).
If problem persists, escalate
the service call
BSD
10.1
PL 1.1
LL-7A
No RAP
Fuser Fault
Thermal Fuse (A27F1) is open due
to severe over temperature of the
Fuser Heat Roll.
To reset: Repair the cause of the
over temperature. Switch off the
Main Power Switch.Replace the
Thermal Fuse. Switch on the Main
Power Switch.
• Check that the Ther-
mistors (RT2) and (RT3)
are touching the Heat
Roll, clean/replace the
Thermistors
• Check/Adjust the Fusing
Temperature (ADJ 10.1)
• Heat Rod Controller
failed.
• Replace the Thermal
Fuse (A27F1)
• AC Module Assembly
(A1).
BSD
10.1
PL
10.2
PL 1.1
LL-7B
No RAP
Fuser Controller PWB - Cooling
Fan failure.
AC Power Module (A1) BSD
1.1
BSD
10.1
PL 1.1
LL-7D
No RAP
CRC Check Failure Replace the AC Module
Assembly (A1).
BSD
10.1
PL 1.1
LL-7E
No RAP
Fuser Controller - Firmware Fault
Fuser locked in calibration mode
due to a firmware fault.
To reset: switch off, then on, the
Main Power Switch.
Replace the AC Module
Assembly (A1).
BSD
10.1
PL 1.1
Table 1 Status Code Entry Chart
Status
Code
Description Components BSD
Ref
PL
Ref
LL-7F
No RAP
Fuser Fault - Over temperature.
The firmware has detected a fuser
over temperature condition.
To reset: switch off, then on, the
Main Power Switch.
• Ensure that the ther-
mistors are wired cor-
rectly and not reversed
(edge and center ther-
mistors swapped).
• Ensure good mechani-
cal/electrical connec-
tions for the
Thermistors.
• Check that the Ther-
mistors (RT2) and (RT3)
are touching the Heat
Roll, clean/replace the
Thermistors.
• Check/Adjust the Fusing
Temperature (ADJ 10.1)
BSD
10.1
PL
10.1
LL-81 Line input not set to correct cur-
rent.
• Line Current Limit (ADJ
3.2)- Country Configura-
tion is not correct for the
electrical voltage used.
Current limit set point is
too low. Check the
adjustment.
• Thermistor (RT2) or
(RT3) does not touch
the Fuser Heat Roll.
• Heat Rod (HR1), or wir-
ing, has an open circuit.
• Clean/Replace the
Thermistors (RT2) or
(RT3)
• Replace the AC Module
Assembly (A1).
BSD
10.1
PL
10.2
PL
10.5
PL 1.1
LL-83
No RAP
Fuser Control PWB failure • Line voltage time-out,
unstable Heat Rod Cur-
rent
• AC Module Assembly
(A1)
• Main PWB (A3)
BSD
10.1
PL 1.2
PL 1.1
LL-89
No RAP
This is a Firmware problem
Press power off (0) then power on
(1). If problem persists, reload the
firmware.
Table 1 Status Code Entry Chart
Status
Code
Description Components BSD
Ref
PL
Ref

Xerox 8850 Specifications

General

Brand	Xerox
Model	8850
Category	Printer
Language	English