Lexmark X746de - Page 115

Diagnostic information 2-75
7526
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5
• Check the front access cover for any
damage.
• Make sure the front access cover can
close correctly.
• Check the front access cover if its
securely fastened to its hinge.
Is the front access cover damaged?
Replace the front access
cover. See “Front access
cover assembly removal”
on page 4-21.
Go to step 6.
6
1. Check the duplex reference edge guide
assembly for damages.
2. Check the gears, rollers and belt for
damage and contamination. Manually turn
the gears.
Is the duplex reference edge guide assembly
damaged?
Replace the duplex
reference edge guide
assembly. See “Duplex
reference edge guide
assembly removal” on
page 4-75.
Go to step 7.
7
1. Check the front door for any damage.
2. Check the paper path for any obstruction.
3. Check roller gears for any damage.
Is the front door assembly damaged?
Replace the front door
assembly. See “Front
door assembly removal”
on page 4-92.
Go to step 8.
8
1. Remove the right cover. See “Right
cover removal” on page 4-51.
2. Check the MPF duplex motor assembly
for proper installation.
3. Check the connectors. Reseat the
connector on the motor side and JDX1 on
the system board.
Is the MPF duplex motor assembly damage?
Replace the MPF duplex
motor assembly. See
“Multipurpose feeder
(MPF)/duplex motor
assembly removal” on
page 4-121.
Go to “920.06—Input
sensor service check” on
page 2-114.
Step Questions / actions Yes No