Description: POB Sensor Static Jam. When the power was turned On, the M/C was stopped (Cycle Down/ Shut Down), or when the interlocks were closed (all interlocks including options), the POB Sensor detected paper.
Remedy: Check the following: • The POB Sensor for remaining paper, contamination, or improper installation • The POB Sensor for failure: dc330 Component Control [077-102] (PL 14.4) • The connection between the POB Sensor P/J180 and the MD PWB P/J523 for short circuit If no problems are found, replace the following parts in sequence: • MD PWB • MCU PWB
Code: 377.907
Description: Duplex Wait Sensor Static Jam. When the power was turned On, the M/C was stopped (Cycle Down/ Shut Down), or when the interlocks were closed (all interlocks including options), the Duplex Wait Sensor detected paper.
Remedy: Check the following: • The Duplex Wait Sensor for remaining paper, contamination, Actuator return failure, or improper installation • The Duplex Wait Sensor for failure: dc330 Component Control [077-108] (PL 14.5) • The connection between the Duplex Wait Sensor P/J175 and the MD PWB P/J523 for short circuit If no problems are found, replace the following parts in sequence: • MD PWB • MCU PWB
Code: 378.210
Description: Tray 4 (TTM) Lift Failure. After the Tray 4 Lift/Feed Motor turned on, the Tray 4 Level Sensor did not turn on within the specified time.
Remedy: • Reload paper in the tray correctly. • Remove foreign substances in the tray. • Power Off/On Execute dc330 Component Control [073-004] Tray 4 Lift/Feed Motor On. The Tray 3 Lift/Feed Motor can be heard. Y↓ N→There is +24 VDC from P/J541 pin 10 on the Tray Module PWB to GND. Y↓ N→Refer to Option DC Power Distribution and the +24 VDC-4 Wirenet to troubleshoot the 24 VDC circuit. Turn Off the power. Remove the Tray 4 Lift/Feed Motor, then measure the following resistances. • Between P/J222 pin-1 and P/J222 pin-2 • Between P/J222 pin-3 and P/J222 pin-4 All resistances are approx. 4 Ohms at 25° C / 77° F. Y↓ N→Replace the Tray 4 Lift/Feed Motor (PL 11.9 Item 4). Check the wires between P/J222 on the Tray 4 Lift/Feed Motor and P/J550 on the Tray Module PWB for an open or shorted circuit, or a loose or damaged connector. The wires are OK. Y↓ N→Repair as required. Replace the Tray 4 Feed/Lift Motor (PL 11.9 Item 4). If the problem continues, replace the following in sequence: • Tray Module PWB • MD PWB • MCU PWB Check the installation of the Tray 4 Level Sensor (PL 11.9 Item 7) and the operation of the actuator. The Level Sensor is installed correctly and the actuator works. Y↓ N→Reinstall the Tray 4 Level Sensor (PL 11.9 Item 7). Execute DC330 [073-102], Tray 4 Level Sensor. Manually activate the Tray 4 Level Sensor (PL 11.9 Item 7). The display changes. Y↓ N→Check the wires between P/J111 on the Tray 4 Level Sensor and P/J548 on the Tray Module PWB for an open or shorted circuit, or a loose or damaged connector. The wires are OK. Y↓ N→Repair as required. Disconnect P/J548 on the Tray Module PWB. There is approx. +5VDC from P 548 pin 13 to GND. Y↓ N→Replace the Tray Module PWB. Reconnect P/J548. Monitor the voltage between P/J548-15 (+) and GND (-) while you activate the actuator of the Tray 4 Level Sensor. The voltage changes. Y↓ N→Replace the Tray 4 Level Sensor (PL 11.9 Item 7). Replace the following in sequence: • Tray Module PWB • MD PWB • MCU PWB Check the mechanical components of the lift mechanism for dirty or damaged gears, broken or out-of-place cables. If a problem is found replace the Tray 4 Assembly. If the check is good, replace the following in sequence: • Tray Module PWB • MD PWB • MCU PWB
Code: 378.211
Description: Tray 5 (TTM) Lift Failure. After the Tray 5 Lift/Feed Motor turned on, the Tray 5 Level Sensor did not turn on within the specified time.
Remedy: Execute dc330 Component Control [074-004] Tray 5 Lift/Feed Motor On. The Tray 4 Lift/Feed Motor can be heard. Y↓ N→There is +24 VDC from - P/J541 pin 10 on the Tray Module PWB to GND. Y↓ N→Refer to Option DC Power Distribution and the +24 VDC-4 Wirenet to troubleshoot the 24 VDC circuit. Turn Off the power. Remove the Tray 5 Lift/Feed Motor, then measure the following resistances. • Between P/J223 pin-1 and P/J223 pin-2 • Between P/J223 pin-3 and P/J223 pin-4 All resistances are approx. 4 Ohms at 25° C / 77° F. Y↓ N→Replace the Tray 5 Lift/Feed Motor (PL 11.11 Item 4). Check the wires between P/J223 on the Tray 5 Lift/Feed Motor and P/J550 on the Tray Module PWB for an open or shorted circuit, or a loose or damaged connector. The wires are OK. Y↓ N→Repair as required. Replace the Tray 5 Feed/Lift Motor (PL 11.11 Item 4). If the problem continues, replace the following in sequence: • Tray Module PWB • MD PWB • MCU PWB Check the installation of the Tray 5 Level Sensor (PL 11.11 Item 7) and the operation of the actuator. The Level Sensor is installed correctly and the actuator works. Y↓ N→Reinstall the Tray 5 Level Sensor (PL 11.11 Item 7). Execute DC330 [074-102], Tray 5 Level Sensor. Manually activate the Tray 5 Level Sensor (PL 11.11 Item 7). The display changes. Y↓ N→Check the wires between P/J115 on the Tray 5 Level Sensor and P/J548 on the Tray Module PWB for an open or shorted circuit, or a loose or damaged connector. The wires are OK. Y↓ N→Repair as required. Disconnect P/J548 on the Tray Module PWB. There is approx. +5VDC from P 548 pin 4 to GND. Y↓ N→Replace the Tray Module PWB (PL 11.7). Reconnect P/J548. Monitor the voltage between P/J548-6 (+) and GND (-) while you activate the actuator of the Tray 5 Level Sensor. The voltage changes. Y↓ N→Replace the Tray 5 Level Sensor (PL 11.11 Item 7). Replace the following in sequence: • Tray Module PWB • MD PWB • MCU PWB Check the mechanical components of the lift mechanism for dirty or damaged gears, broken or out-of-place cables. If a problem is found replace the Tray 5 Assembly. If the check is good, replace the following in sequence: • Tray Module PWB (PL 11.7) • MD PWB • MCU PWB
Code: 378.945
Description: TTM Tray 4 Lift NG. There is a problem with the TTM Tray 4 Lift.
Remedy: Go to the 389.617 RAP.
Code: 378.946
Description: TTM Tray 5 Lift NG There is a problem with the TTM Tray 5 Lift.