Printhead Removal, Installation, And Adjustment - Lexmark X746de Service Manual

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Printhead removal, installation, and adjustment

See
"Printhead assembly" on page 7-9
Service tip—Testing the new printhead
See
"Printhead verification" on page 3-52
before you install the printhead.
Printhead removal
1. Turn the printer off.
Disconnect the power cord from the electrical outlet and from the printer.
2.
3. Remove the paper tray.
Open the top access door.
4.
Open the front access door.
5.
6. Remove the fuser.
Remove the transfer module and photoconductor units.
7.
Disconnect the transfer module cable (A).
a.
b. Press the two tabs (B) to release the front access cover assembly.
Press the two tabs (C) on either side of the transfer module, and lift out the transfer module.
c.
Note: Leave the photoconductor units on the transport belt when removing.
Warning: To avoid damaging the photoconductor drum, place the transfer module with the
photoconductor units on a clean surface. Never expose the photoconductor units to light for a prolonged
period of time. You can place a clean, dry cloth over the transfer module and photoconductor units until
they are required.
Service Manual
4-140
for the part number.
for quick way to verify that the NVRAM on a printhead is good
B C
A
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