Lexmark X746de - Page 95

Diagnostic information 2-55
7526
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2
1. Remove the right cover. See “Right
cover removal” on page 4-38.
2. Check the cartridge motor 2/3 cable for
proper connection to the EP drive
assembly, pinch points for the cable, or
damage to the cable or connector (A).
Is either cable damaged?
Replace the cartridge
motor 2/3 cable. See
“Cartridge motor 2/3
cable removal” on
page 4-57.
Go to step 3.
3
Measure the continuity across all of the fuses
on the system board.
Are any of the fuses blown?
Replace the system board.
See “System board
removal” on page 4-157.
Go to step 4.
4
1. Disconnect the cartridge motor 2/3 cable
on the motor and on the system board.
2. Connect a new motor 1/fuser motor cable
on the motor and on the system board.
3. Run diagnostics motor check. Bring the
printer up in Diagnostics Menu (turn off
the printer, press and hold buttons 3 and
6, then turn on the printer).
4. Select MOTOR TESTS.
Did the motor run?
Replace the cartridge
motor 2/3 cable. See
“Cartridge motor 2/3
cable removal” on
page 4-57.
Go to step 5.
5
1. Return the old cartridge motor 2/3 motor
cable.
1. Disconnect the motor drive cable from the
EP drive assembly and connect it to the
motor on a new EP drive assembly.
Note: Do not install the new EP drive
assembly yet.
2. Enter Diagnostics mode (press and hold
buttons 3 and 6, turn on the MFP, and
release the buttons when the progress bar
displays).
3. Touch MOTOR TESTS.
Did the motor run?
Replace the EP drive
assembly. See
“Electrophotographic
(EP) drive assembly
removal” on page 4-78.
Replace the system board.
See “System board
removal” on page 4-157.
Step Questions / actions Yes No