Black Page Copy Service Check; Flatbed Service Check; Adf Streak Service Check - Lexmark X500n Service Manual

Scanner / Copy / Fax service checks

Black page copy service check

Step
1 Print a menu page, or a page from the host.
Is the page black?
2 Is the CCD ribbon cable properly connected
to J-CCD on the system board?
3 Check for +3.3VDC on pins 12 and 16 on
connector J-CCD. Pins 10 and 20 are
+5VDC. Pin 8 is +12VDC. Are the voltages
present?

Flatbed service check

Step
1 Check to see if the flatbed is locked. Is it
locked?
2 Ensure that the flatbed motor cable (JFB1)
is connected. Is the cable connected?
3 Check pin 1 in J-FB1 for voltage. The
voltage is only present when a copy job is
running. The voltage should measure 5V. Is
voltage present?

ADF streak service check

Step Questions / actions
1 Do streaks appear on the middle of
scans when using the ADF?
Questions / actions
Questions / actions
Yes
See "High voltage power
supply (HVPS) service
check" on page 2-23
Go to step 3.
Replace the flatbed unit.
See "Flatbed assembly
removal" on page 4-49.
Yes
Unlock the flatbed.
Go to step 3.
Replace the flatbed unit.
See "Flatbed assembly
removal" on page 4-49.
Yes
Clean the ADF glass on the
flatbed using a lint-free cloth.
Also, clean the separator roll
and pad with a damp cloth.
7100-XXX
No
Go to step 2.
Properly connect the ribbon
cable to J-CCD.
Replace the system board.
See "System board
removal" on page 4-36.
No
Go to step 2.
Properly connect the cable.
Replace the system board.
See "System board
removal" on page 4-36.
No
No issue to fix.
Diagnostic information
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