Phaser 7500 Printer Service Manual 3-53
Error Messages and Codes
Exit Sensor 1 Off Jam
The Fuser Exit Sensor does not turn On within the specified time after the Fuser
Exit Sensor On.
Applicable Chain-Link Code
• 077-103: Regi Sensor Off Jam
Initial Actions
• Check the paper path for debris.
• Clean the Pick and Feed Rollers. Replace the Rollers if worn.
• Power cycle the printer.
• If the problem persists, follow the procedure below.
1. Check the paper transportation failure due to debris/ burrs on the paper path.
2. Check the Fuser for wound up, stuck paper.
3. Check each Exit Roll and Pinch Roll for contamination, wear, and rotation
failure.
4. Check each Exit Roll Drive Gear for wear and damage.
5. Is paper used out of specification (refer to “Paper and Tray Specifications” on
page 1-19?
6. Check the Fuser Exit Sensor for contamination, improper installation, and
Actuator operation failure.
7. Perform the Fuser Exit Sensor test in Diagnostics.
8. The connection between the Fuser Exit Sensor J192 and the MCU PWB J431
for open circuit, short circuit, and poor contact.
9. Perform the Fuser Drive Motor test in Diagnostics.
10. If no problems are found, replace the following parts in sequence:
• Motor Drive PWB (REP 18.13, page 8-204)
• MCU PWB (REP 18.12, page 8-202)
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
■ Fuser Assy, PL7.1.1
■ MCU PWB, PL18.3.6
■ Motor Drive PWB, PL18.3.7
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