Lexmark CX310 Service Manual page 98

Actions
Step 2
Turn the printer off, and remove the rear cover. See
on page 307.
Turn the printer on, and measure the values below at JCTM1 during POR:
Pin 1: +5 V dc
Pin 2: +3.3 V dc
Pin 3: +3.3 V dc
Pin 4: +3.3 V dc
Pin 5: +3.3 V dc
Pin 6: Ground
Are any of the values incorrect?
Yes
Replace the controller
board.
"Rear cover removal"
board removal" on
page
Diagnostic information
98
No
Replace the TMC card.
"Controller See "Toner meter cycle
(TMC) card removal"
309. on page
7527
258.