Fuser Failure - U4-1 On Time - Fuji Xerox Phaser 5500 Service Manual

Scanner Motor Troubleshooting Procedure (Continued)
Step Actions and Questions
4
Check the Laser connections.
Are P/J130, P/J620 and P/J406
connected?
5 Check continuity between the Laser and
the Engine Logic Board.
Is there continuity on each wire
between P/J140 <=> P/J406?
6 Check continuity between the Laser and
the Engine Logic Board.
Is there continuity on each wire
between P/J130 <=> P/J406?
7 Check for +5 V to the Laser.
Is there +5 V across P/J140-8 (+) <=>
ground?
8 Check for +24 V to the Laser.
Is there +24 V across P/J130-5 (+) <=>
ground?

Fuser Failure - U4-1 On Time

Note
Following display of this error, leave power applied for 7 minutes, then cycle
printer power. If the error reoccurs, procede with troubleshooting procedure.
The Fuser failed to reach temperature within the warm-up period. Possible faults are:
During the Warm-Up period, the Control Thermistor does not detect the
Ready temperature even when the specified time has passed.
During the Standby period, the Control Thermistor does not detect the
required temperature even when the specified time has passed.
During the Standby period, the Control Thermistor does not detect the
required temperature even when the specified time has passed.
During idling after power-on, the Control Thermistor does not detect the
idling stop temperature even after the specified time has passed.
During print, the Control Thermistor does not detect the required
temperature even when the specified time has passed.
Error Messages, Codes, and Procedures
Yes
Go to Step 5.
Go to Step 6.
Go to Step 7.
Go to Step 8.
Replace the Laser
assembly
(page 8-74).
No
Connect P/J130,
P/J620 and P/
J406.
Repair the wiring.
Repair the wiring.
Replace the
Engine Logic
Board
(page 8-89).
Replace the
Engine Logic
Board
(page 8-89).
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