Phaser 7500 Printer Service Manual 3-57
Error Messages and Codes
Registration Sensor On Jam (Duplex Wait)
The Regi Sensor does not turn On within the specified time after the Regi Clutch
On after the Feed by Duplex Wait has started.
Applicable Chain-Link Code
• 077-123: Regi Sensor On Jam (Duplex Wait ~)
Initial Actions
• Check the paper path for debris.
• 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 each Duplex Roll and Pinch Roll for contamination, wear, and rotation
failure.
3. Check each Duplex Roll Drive Gear for wear and damage.
4. Is paper used out of specification (refer to “Paper and Tray Specifications” on
page 1-19?
5. Check the Regi Sensor for contamination, improper installation, and Actuator
operation failure.
6. Perform the Jam Sensors test in Diagnostics.
7. Check the connection between the Regi Sensor J160 and the Motor Drive PWB
J515 for open circuit, short circuit, and poor contact.
8. Perform the Duplex Motor test in Diagnostics.
9. 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
■ Duplex Assy, PL14.5.1
■ MCU PWB, PL18.3.6
■ Motor Drive PWB, PL18.3.7
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