Actions Yes No
Step 4
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 5
Does the message Tray (x) Missing fail to appear when the tray is
pulled out?
Go to step 6. Problem resolved.
Step 6
a Turn off the printer.
b Remove the rear cover. See “Rear cover removal” on page 307.
c Disconnect the cable at JTRAY1 connector for tray 1 or JOPT1 for tray
2 and 3 on the controller board.
d Turn the printer on, and measure the following voltages:
For tray 1, check JTRAY1 on the controller board for +5 Vdc on pin 1,
+5 Vdc on pin 2, and GND on pin 3.
For tray 2 or 3, check JOPT1 on the controller board for GND on pin 2,
GND on pin 3, and +24 Vdc on pin 5.
Are the voltage values approximately correct?
Problem resolved. Replace the controller
board. See
“Controller
board removal” on
page 309.
550 and 650 input option service checks
Option and media size not recognized service check
Action Yes No
Step 1
a POR the printer.
b Reseat the printer from the input option and make sure it is installed
correctly.
c Make sure the input option configuration is supported for that printer.
Refer to the Input Option Configuration Guide.
Does the error remain?
Go to step 2. Problem resolved.
Step 2
Is the machine using both 650 and 550 input option tray?
Go to step 3. Go to step 4.
7527
Diagnostic information
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