Lexmark CX310n - Page 133

Actions Yes No
Step 3
Check for a dislodged tray present sensor.
Is the sensor dislodged?
Replace the option tray
present sensor.
• If the 650‑sheet
tray is affected,
then replace the
650‑sheet drawer
assembly.
• If the 550‑sheet
drawer assembly is
affected, then
replace the entire
550‑sheet drawer
assembly.
Contact the next level
of support.
Step 4
Does the message Tray (x) Missing fail to appear when the tray is
pulled out?
Go to step 5. Problem resolved.
Step 5
a Turn off the printer.
b Remove the rear cover. See “Rear cover removal” on page 221.
c Disconnect the cable at JTRAY1 connector for tray1 or JOPT1 for tray
2 and 3 on the controller board.
d Turn the printer on, and measure the voltages below:
JTRAY1 for tray 1:
Pin 1: +5 V dc
Pin 2: +5 V dc
Pin 3: Ground
JOPT1 for tray 2 or 3:
Pin 2: Ground
Pin 3: Ground
Pin 5: +24 V dc
Are the voltage values approximately correct?
Problem resolved. Replace the controller
board. See “Controller
board removal” on
page 239.
7527
Diagnostic information
133