Main Motor Service Check - Dell 1710n - Laser Printer B/W Service Manual

Main motor service check

FRU
Main motor cable
LVPS/HVPS
Controller card
Warning: Do not
replace the operator
panel and controller
card at the same time.
Each card contains the
printer settings. When
either of these cards is
new, it obtains the
settings from the other
card. Settings are lost
when both are new
and replaced at the
same time.
Action
Turn off the printer, and unplug the main motor
cable at J8. Turn on the printer, and check for
the following voltages at J8:
J8 pins
Pins 1–4
Pin 6
Pins 7–9
Verify ground at pin 5 for both the card and
cable.
• If these voltages are correct, check the main
motor cable for continuity.
– Remove rear cover to access connector on
motor.
– If continuity exists on each wire, call next
level of service.
– If continuity does not exist on one or more
of the wires, replace the motor cable.
• If these voltages are not correct, see
"Controller card connector pin values" on
page 5-4, or replace the controller card. See
"Controller card removal" on page
Note: The main motor is not a service part.
Voltages
Approx. +3.3 V dc
Approx. +5 V dc
10 V dc–24 V dc
Diagnostics—all models
4-15.
2-91