Printhead Service Check - Lexmark CX310 Service Manual

Printhead service check

Actions
Step 1
POR the printer.
Does this solve the problem?
Step 2
Turn the printer off, and then remove the rear cover. See
removal" on page 307.
Check the cables at JMIRR1 and JPH1 on the controller board for proper
connection, the printhead cable for pinch points, and the cable or
connector for any other damage.
Is the cable damaged?
Step 3
Turn the printer on, and then wait until the printer posts an error. Using
a voltmeter, check the following values at JMIRR1:
Pin 1: +5 V dc
Pin 2: +3.3 V dc
Pin 3: +5 V dc
Pin 4: Ground
Pin 5: +24 V dc
Are the values approximately correct?
Yes
The problem is solved. Go to step 2.
Replace the printhead.
See
"Rear cover
removal" on page
324.
Replace the controller
board. See
board removal" on
page
Diagnostic information
89
No
Go to step 3.
"Printhead
Replace the printhead.
"Controller See "Printhead
removal" on page
309. 324.
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