U4:Fuser Fail - Oki B6100 Technical Manual

Primary FIPs:Error Codes

3.3 U4:FUSER FAIL

There is a problem with the Fuser Assy.
Step
1
INITIAL ANALYSIS
Inspect the following components.
• Fuser Assy (PL6.1.7)
• Harness Assy Fuser-M (J271, J11, J27, J262) (PL6.1.12)
• PWBA HKB26 MCU (PL10.1.13)
• PWBA HKB PS (PL10.1.17)
• Switch Assy I/L Front (PL10.1.12)
• Switch Assy I/L Rear (PL10.1.7)
• Sensor Photo Exit in the Fuser Assy (PL6.1.7)
Are they compatible with your printer version, correctly
installed, not damaged, deformed, or contaminated?
2
SWITCH ASSY I/L FRONT (PL10.1.12) ANALYSIS
Check the Switch Assy I/L Front function using SENSOR/
SWITCH CHECH.
Does the Switch Assy I/L Front function correctly and
increment the Sensor Check number each time you actu-
ate it?
3
SWITCH ASSY I/L REAR (PL10.1.7) ANALYSIS
Check the Switch Assy I/L Rear function using SENSOR/
SWITCH CHECH.
Does the Switch Assy I/L Rear function correctly and
increment the Sensor Check number each time you actu-
ate it?
4
HARNESS ASSY FUSER-M
(PL6.1.12) ANALYSIS
Is there continuity between J271 and J11?
5
HEATER ASSY ANALYSIS
Does U4 appear after POWER–ON?
(Answer YES if there is a momentary Fuser Assy Warm-Up
Sequence)
6
HEAT ROD ANALYSIS
Let the Heat Rod cool down.
Does the Heat Rod glow when power is switched ON?
3-10
Actions and Questions
(J271, J11, J27, J262)
OKI B6100 Laser Printer - Base Engine Technical Manual
Yes No
Go to step 2. Replace the
problem com-
ponents.
Go to step 3. Replace the
Switch Assy I/
L Front
(RRP10.1.12)
Go to step 4. Replace the
Switch Assy I/
L Rear
(RRP10.1.5).
Go to step 5. Replace the
Harness Assy
Fuser-M
(J271, J11,
J27, J262)
(RRP6.1.4).
Go to 6.5 Go to step 6.
Temperature
Sensor Fail-
ure.
Go to step 6. Go to 6.4
Heat Rod
Failure.
Version 1.0