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FRU
LVPS
5
LVPS to fuser AC cable
Fuser top cover assembly
6
(thermistor, thermistor
cable)
Fuser to system board DC
cable
Error code 920.06
7
displayed
LVPS
System board
System board to LVPS
cable
Fuser assembly
8
Service Manual
2-88
Action
CAUTION: When taking measurements for AC power, observe all
safety precautions.
Check the AC line voltage between the pins on the fuser end of the
LPVS to fuser AC cable. If the voltage is correct, unplug the AC
power cord from the LVPS cable. If the voltage is correct, unplug the
AC power cord from the LVPS, pull the LVPS out far enough to be
able to check the voltage between CN-1 and CN1-3 on the LVPS
board. Plug in the power cord, turn the printer on and check the
voltage. If correct, replace the LVPS to fuser AC cable; if incorrect,
replace the LVPS assembly.
Note: If the fuses in the LVPS are blown, the LVPS assembly must
be replaced.
Check to make sure that the thermistor is installed correctly to J5 on
the fuser control card. If installed correctly check the cable for any
signs of damage. If any problems are found, replace the fuser top
cover assembly. If no problem is found, check the fuser to system
board DC cable for correct installation at J1 on the fuser control card.
If no problem is found, check the fuser to system board cable for
correct installation at J10 on the system board.
Carefully check the installation of the LVPS to system board cable to
J27 on the system board and to CN2 on the LVPS. If the cable is not
seated or installed properly, reseat the cable and retry the printer. If
the cable is installed correctly, replace the following FRUs in the
order shown:
• LVPS assembly. See
"Low voltage power supply removal" on
page
4-55.
• System board assembly. See
removal" on page
4-77.
• LVPS to system board cable.
If no problem is found up to this point, then replace the following in
the order shown:
• Fuser assembly. See
"Fuser assembly removal" on page
• System board assembly. See
removal" on page
4-77.
• LVPS. See
"Low voltage power supply removal" on
page
4-55.
"System board and inner shield
"System board and inner shield
4-27.
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