110.Xx Printhead Service Check - Lexmark CX310n Service Manual

110.xx Printhead service check

Actions
Step 1
Turn the printer off, and then remove the rear cover. See
removal" on page 221.
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 2
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
Replace the printhead.
See
"Rear cover
removal" on page
292.
Replace the controller
board. See
board removal" on
page
Diagnostic information
82
No
Go to step 2.
"Printhead
Replace the printhead.
"Controller See "Printhead
removal" on page
239. 292
7527