Actions Yes No
Step 3
Enter Diagnostics Menu.
Turn the printer on, press and hold 3 and 6, and release the buttons with
the installed memory and processor speed displays.
Perform the Base Sensor Test. See “BASE SENSOR TEST” on page 176.
a Select Base Sensor Test, and press Select.
b Select Fuser Exit Sensor, and press Select.
c Open the close the front door, and inspect the fuser exit sensor located
on the LVPS shield.
Turn the printer off, and remove the rear cover. See “Rear cover removal”
on page 221
Turn the printer on, and then click the values below at JBIN1:
Pin 1: 0 V dc (+5 V dc during cycle)
Pin 2: +3.3 V dc beam blocked 0 V dc unblocked
Pin 3: Ground
Are the values correct?
Problem resolved. Replace the controller
board. See “Controller
board removal” on
page 239.
7527
Diagnostic information
114
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