Fuser Failure - U4-7 Cold Sagging - Fuji Xerox Phaser 5500 Service Manual

Fuser Thermistor Troubleshooting Procedure
Step Actions and Questions
1 Check the Fuser installation.
Is the Fuser installed properly?
2
For FS1 Thermistor Only.
Is the resistance across P/J131-1 and P/
J131-2 more than or equal to 3 k-ohm?
3 For FS2 Thermistor Only.
Is the resistance between P/J132-1 and
P/J132-2 greater than or equal to
3 k-ohm?
4
For Pressure Roller Thermistor Only.
Is the resistance across P/J133-1 and P/
J133-2 greater than or equal to
3 k-ohm?
5 Check the Fuser connection.
Is P/J6 connected?
6 Check continuity between the Fuser and
LVPS.
Is there continuity on each wire
between P/J600 <=> P/J6?
7 Check power to the Fuser
Is there +XX V across P/JXXX (+) <=>
ground?

Fuser Failure - U4-7 Cold Sagging

The Fuser temperature regulation failed.
Note
Following display of this error, leave power applied for 7 minutes, then cycle
printer power. If the error reoccurs, proceed with troubleshooting procedure.
Applicable Error Code
Fuser Failure - U4-7 Cold Sagging
3-30
Yes
Go to Step 2.
Go to Step 3.
Go to Step 4.
Go to Step 5.
Go to Step 6.
Go to Step 7.
Replace the Fuser
(page 8-76).
Phaser 5500 Printer Service Manual
No
Correct the
installation.
Replace the
Fuser
(page 8-76).
Replace the
Fuser
(page 8-76).
Replace the
Fuser
(page 8-76).
Connect P/J6.
Repair the wiring.
Replace the
LVPS
(page 8-92).