Specifications

Flowcharts and TablesTroubleshooting
Fuser Assembly Failure (Continued)
Step Check Result Action
8 Switch off the printer and
disconnect connector P12
from the DC controller
board. Does the fuser
heater bulb light when you
switch on the printer?
No Replace the laser/optic assembly.
9 Switch off the printer and
disconnect connector P15
from the DC controller
board. Does the fuser
heater bulb light when you
switch on the printer?
Yes Replace the DC controller board.
10 Connect the multimeter
between pins P15-8 (5 VB,
yellow wire) and P15-9 (5 V,
orange wire) on the DC
controller board. When you
remove and insert the toner
cartridge does the
resistance change from 0
Ω
(cartridge inserted) to
infinity Ω (cartridge
removed)?
No Replace the toner cartridge sensor
assembly.
11 Connect the multimeter
between pins P15-10 (EP
CHECK, red wire) and
P15-11 (GND, brown wire)
on the DC controller board.
When you remove and
insert the toner cartridge,
does the resistance
change from 0
Ω (cartridge
inserted) to infinity Ω
(cartridge removed)?
No Replace the toner cartridge sensor
assembly.