Lexmark CX310dn - 110.XX Printhead Service Check

110.xx Printhead service check
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Step 1
Turn the printer off, and then remove the rear cover. See “Rear cover
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?
Replace the printhead.
See “Printhead
removal” on page
292.
Go to step 2.
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?
Replace the controller
board. See “Controller
board removal” on
page 239.
Replace the printhead.
See “Printhead
removal” on page
292
7527
Diagnostic information
82