Black Or Blank Page Copy Service Check - Lexmark CX310n Service Manual

Symptom
Machine dials a number but fails to make a connection with another
fax machine.
Incoming fax has blank spaces or poor quality.
Invalid fax partition, or fax partition too small.
Some words on an incoming fax are stretched.
Faxes fail to transmit.
Fax reception fails.
Rattling noise coming from the ADF unit.

Black or blank page copy service check

Actions
Step 1
Print a menu page, or a page from the host.
Is the page black?
Step 2
Is the copy an ADF scan?
Step 3
Run a flatbed copy.
Is it blank or black?
Step 4
Did the sheet feed into the ADF?
Step 5
Is the CCD ribbon cable properly connected to JCCD1 on the controller
board?
Step 6
Check for +14VDC on Pin 33 and 34 on connector JCCD1. Pin 31 and 32
are +5VDC. Are the voltages present?
Action
The other fax machine may be turned off. Ask the fax
recipient to check their machine.
• The sending fax machine may be faulty.
• The sending fax machine may have a dirty
document glass.
• A noisy phone line can cause errors.
•
Check the MFP print quality by making a copy.
• The print cartridge may be empty.
See "Format fax storage" on page
The sending fax machine had a temporary jam.
See "Fax transmission service check" on page
See "Fax reception service check" on page
Inspect the ADF top cover and ADF separator pad for
proper installation. Remove the separator pad and
separator roll and reinstall them, if needed. See
separator pad removal" on page
Also see
page 225.
Yes
See
color page service
check" on page
Go to step 3.
Go to step 5.
Go to step 6.
Replace the flatbed
unit. See
scanner assembly
removal" on page
252.
Diagnostic information
136
194.
234.
"Top cover assembly removal" on
No
"Print quality solid Go to step 2.
36.
Go to step 4.
Go to step 4.
Go to step 5.
Properly connect the
ribbon cable to JCCD1.
Replace the controller
"Flatbed board. See
board removal" on
page 239.
7527
146.
144.
"ADF
"Controller