• Code: 373B
• Description: Tray 3 Out of Paper RAP Use this RAP when an incorrect tray 3 out of paper message is displayed.
• Remedy: Refer to. Enter dC330 code 073-320, tray 3 empty sensor, Q73-320. Use a piece of paper to actuate Q73-320. The display changes. Y↓N→Go to Flag 1. Check Q73-320. Refer to: • GP 11 How to Check a Sensor. • P/J755, IOT PWB. • 301E +5V and +5VSB Distribution RAP. • 301B 0V Distribution RAP. If necessary install a new tray 3 empty sensor, PL 80.32 Item 3. If the fault persists, perform the OF7 IOT PWB Diagnostics RAP. Remove the tray 3 front cover, Tray 3 Removal. Close tray 3. The feed roll assembly drops when tray 3 is closed. Y↓N→Remove the tray 3 paper feed assembly. Ensure the lever is undamaged and operates correctly. If necessary, install a new tray 3 paper feed assembly, PL 80.32 Item 1. The fault may be intermittent. Check the wiring and connectors between the IOT PWB and Q73-320. If the fault persists, perform OF7 IOT PWB Diagnostics RAP.

• Code: 374-100-00, 374-217-00
• Description: Tray 4 Elevator Lift Failure RAP 374-100-00 Tray 4 stack height sensor failed to actuate within the correct time after the elevator motor turned on. 374-217-00 Tray 4 failed to elevate during printing as sheets were fed from the tray. NOTE: Rapid closure of tray 3 when tray 4 is being elevated may cause this fault.
• Remedy: Enter dC330 code 074-300, tray 4 home sensor, Q74-300. Pull out tray 4, then push tray 4 fully home. The display changes. Y↓N→Go to Flag 1. Check Q74-300. Refer to: • GP 11 How to Check a Sensor. • GP 30 Tray 4 Control PWB Test Points. • P/J157, Tray 4 control PWB. • P/J775, IOT PWB. • 301E +5V and +5VSB Distribution RAP. • 301B 0V Distribution RAP. Install new components as necessary: • Tray 4 home sensor, PL 70.21 Item 4. • Tray 4 control PWB, PL 70.21 Item 2. Enter dC330 code 074-330, tray 4 stack height sensor, Q74-330. Pull out tray 4. Manually actuate Q74-330. The display changes. Y↓N→Go to Flag 2. Check Q74-330. Refer to: • GP 11 How to Check a Sensor. • GP 30 Tray 4 Control PWB Test Points. • P/J157, Tray 4 control PWB. • P/J775, IOT PWB. • 301E +5V and +5VSB Distribution RAP. • 301B 0V Distribution RAP. Install new components as necessary: • Tray 4 stack height sensor, PL 80.33 Item 7. • Tray 4 control PWB, PL 70.21 Item 2. (W/O TAG 004 Only). Disconnect P/J159 on the Tray 4 control PWB. Connect a service meter between pin 1 and pin 2 on the wiring side of the connector. Continuity is measured when the stack limit switch is deactuated and open circuit is measured when the switch is actuated. Y↓N→Go to Flag 3. Check the tray 4 over elevate switch. Refer to: • GP 13 How to Check a Switch. • GP 30 Tray 4 Control PWB Test Points. • P/J159, Tray 4 control PWB. • 301G +24V Distribution RAP. • 301B 0V Distribution RAP. Install new components as necessary: • Tray 4 over elevate switch, PL 80.33 Item 8. • Tray 4 control PWB, PL 70.21 Item 2. CAUTION To prevent damage to the elevator and paper feed mechanism, the appropriate paper tray must be pulled out before MOT74-010 or MOT73-010 is run in service mode. Pull out tray 4. Enter dC330 code 074-010, tray 4 elevator motor, MOT74-010. The motor runs. Y↓N→Pull out tray 3. Enter dC330 code 073-010, tray 3 elevator motor, MOT73-010. The motor runs. Y↓N→Perform the 373-100-00, 373-217-00 Tray 3 Elevator Lift Failure RAP. Perform the steps that follow: • Remove the tray 4 elevator motor. • Remove the tray 3 elevator motor, PL 70.21 Item 1. • Install the tray 3 elevator motor in place of the tray 4 elevator motor. Enter dC330 code 074-010, MOT74-010. The motor runs. Y↓N→Go to Flag 4. Check the wiring between the LVPS and tray 4 control PWB. Refer to: • GP 30 Tray 4 Control PWB Test Points. • P/J158, Tray 4 control PWB. • P/J656, LVPS. • 301G +24V Distribution RAP. • 301B 0V Distribution RAP. The wiring is good. Y↓N→Repair the wiring. +24V is present at P/J158 pin 1. Y↓N→If necessary, install a new tray 4 control PWB, PL 70.21 Item 2. If the fault persists, perform the 301L LVPS RAP. Go to Flag 5. Check the wiring between the IOT PWB and tray 4 control PWB. Refer to: • GP 30 Tray 4 Control PWB Test Points. • P/J775, IOT PWB. • P/J155, Tray 4 control PWB. • 301E +5V and +5VSB Distribution RAP. • 301B 0V Distribution RAP. The wiring is good. Y↓N→Repair the wiring. +5V is present at P/J155 pin 11. Y↓N→Perform OF7 IOT PWB Diagnostics RAP. Install a new tray 4 control PWB, PL 70.21 Item 2. Install a new tray 4 elevator motor, PL 70.21 Item 1. Check the components that follow: • The elevator cables, PL 70.19 Item 3, PL 70.19 Item 4 and PL 70.19 Item 5. • The elevator drives gear coupling, PL 70.19 Item 16. If the fault persists, perform the 374B Tray 4 Out of Paper RAP.

• Code: 374-500-00
• Description: Tray 4 Open During Run RAP 374-500-00 Tray 4 was opened during run when sheets were fed from the tray.
• Remedy: Enter dC330 code 074-300, tray 4 home sensor, Q74-300. Open, then fully close tray 4. The display changes. Y↓N→Go to Flag 1. Check Q74-300. Refer to: • GP 11 How to Check a Sensor. • GP 30 Tray 4 Control PWB Test Points. • P/J155, Tray 4 control PWB. • P/J775, IOT PWB. • 301E +5V and +5VSB Distribution RAP. • 301B 0V Distribution RAP. Install new components as necessary: • Tray 4 home sensor, PL 70.21 Item 4. • Tray 4 control PWB, PL 70.21 Item 2. The fault may be intermittent. Perform the steps that follow: • Check the sensor holder, PL 70.21 Item 3. • Install a new tray 4 home sensor, PL 70.21 Item 4. • Install a new tray 4 control PWB, PL 70.21 Item 2. • OF7 IOT PWB Diagnostics RAP.

• Code: 374A
• Description: Tray 4 False Low Paper Level RAP Use this RAP when the machine displays ‘tray 4 is low on paper’ when the tray is full. The ‘tray is low on paper’ message should appear when the tray is at 10% of its capacity. The machine measures the time taken for the tray to elevate after being closed, to determine the amount of paper remaining in tray 4. This measurement only occurs if the tray has been open for a minimum of 30 seconds. If the tray is closed within 30 seconds the timeout of the last known paper level is used and no new timing is calculated. NOTE: A low paper condition will be declared if the stack is below approximately 190 sheets.
• Remedy: Pull out tray 4 and allow it to move fully down. Close the tray. The tray moves up. Y↓N→Perform the 374-100-00, 374-217-00 Tray 4 Elevator Lift Up Failure RAP. Pull out tray 4. Load a ream of paper (500 sheets). Wait for 30 seconds before closing the tray. The message ‘Tray is low on paper’ has cleared. Y↓N→Go to Flag 1. Check the tray 4 level encoder, Q74-340. Refer to: • GP 11 How to Check a Sensor. NOTE: In this check, use a piece of paper to actuate the sensor. The check is difficult due to the problem in moving the timing disc. • GP 30 Tray 4 Control PWB Test Points. •. • P/J156, Tray 4 control PWB. • P/J775, IOT PWB. • 301E +5V and +5VSB Distribution RAP. • 301B 0V Distribution RAP. Install new components as necessary. • Tray 4 elevator motor, PL 70.21 Item 1. • Tray 4 control PWB, PL 70.21 Item 2. If necessary, perform the OF7 IOT PWB Diagnostics RAP. The low paper sensor appears to be working correctly. If the customer is only adding small amounts of paper at a time, then the message ‘Tray is low on paper’ will be displayed. If the tray is filled with 190 sheets or more, the message is cancelled.

• Code: 374B
• Description: Tray 4 Out of Paper RAP Use this RAP when an incorrect tray 4 out of paper message is displayed.
• Remedy: Refer to. Enter dC330 code 074-320, tray 4 empty sensor, Q74-320. Use a piece of paper to actuate Q74-320. The display changes. Y↓N→Go to Flag 1. Check Q74-320. Refer to: • GP 11 How to Check a Sensor. • GP 30 Tray 4 Control PWB Test Points. • P/J157, Tray 4 control PWB. • P/J775, IOT PWB. • 301E +5V and +5VSB Distribution RAP. • 301B 0V Distribution RAP. Install new components as necessary: • Tray 4 empty sensor, PL 80.33 Item 6. • Tray 4 Control PWB, PL 70.21 Item 2. Remove the tray 4 front cover, Tray 4 Removal. Close tray 4. The feed roll assembly drops when tray 4 is closed. Y↓N→Remove the tray 4 paper feed assembly. Ensure the lever is undamaged and operates correctly. If necessary, install a new tray 4 paper feed assembly, PL 80.33 Item 1. The fault may be intermittent. Check the wiring and connectors between the HCF control PWB and the sensor. If the fault persists, perform OF7 IOT PWB Diagnostics RAP.

• Code: 375-100-00
• Description: Bypass Tray Lift Failure RAP 375-100-00 The bypass tray elevate sensor failed to actuate within the correct time.
• Remedy: Enter dC330 code 075-040, bypass tray elevate sensor, Q75-040. Manually actuate the sensor. The display changes. Y↓N→Go to Flag 1. Check Q75-040. Refer to: • GP 11 How to Check a Sensor. • P/J750, IOT PWB. • 301E +5V and +5VSB Distribution RAP. • 301B 0V Distribution RAP. If necessary, install a new bypass tray elevate sensor, PL 70.35 Item 20. If the fault persists, perform the OF7 IOT PWB Diagnostics RAP. With the left door closed, enter dC330 code 080-025, TAR/bypass tray motor, MOT80-006, PL 80.25 Item 5. The motor runs in reverse. Y↓N→Go to Flag 2. Check MOT80-006. Refer to: • GP 10, How to Check a Motor. • P/J754, IOT PWB. • 301G +24V Distribution RAP. • 301B 0V Distribution RAP. If necessary, install a new TAR/bypass tray motor, PL 80.25 Item 5. If the fault persists, perform the OF7 IOT PWB Diagnostics RAP. Go to Flag 3. Check the bypass tray clutch. Refer to: • GP 12 How to Check a Solenoid or Clutch. • P/J757, IOT PWB. • 301G +24V Distribution RAP. • 301B 0V Distribution RAP. The clutch is good. Y↓N→If necessary, install a new bypass tray clutch, PL 70.35 Item 9. If the fault persists, perform the OF7 IOT PWB Diagnostics RAP. Check the condition and operation of the components that follow. Refer to GP 7 Miscellaneous Checks: • Bypass tray drive assembly. • Tension spring. • Bypass tray drive belt, PL 80.25 Item 10. • Drive pulley, PL 80.25 Item 3. • Bypass tray lift plate shaft, cam, cam follower and cam drive gear. Install new components as necessary: • Bypass tray assembly, PL 70.35 Item 1. • Bypass tray drive belt, PL 80.25 Item 10. • Drive pulley, PL 80.25 Item 3.

• Code: 375A
• Description: Bypass Tray RAP Use this RAP to identify and correct problems when using the bypass tray.
• Remedy: Enter dC330 code 075-320, bypass tray empty sensor, Q75-320. Manually actuate the sensor. The display changes. Y↓N→Go to Flag 2. Check Q75-320. Refer to: • GP 11 How to Check a Sensor. • P/J750, IOT PWB. • 301E +5V and +5VSB Distribution RAP. • 301B 0V Distribution RAP. If necessary, install a new bypass tray empty sensor, PL 70.35 Item 5. If the fault persists, perform the OF7 IOT PWB Diagnostics RAP. Enter dC140 code 075-601, bypass tray width sensor, Q75-601. Move the bypass tray width guides between wide and narrow settings. NOTE: The width sensor is a potentiometer. The wiper of the potentiometer is attached to the bypass tray side guides. This gives a variable voltage to indicate the paper width setting. The display changes. Y↓N→Go to Flag 1. Check Q75-601. Refer to: • GP 11 How to Check a Sensor. • P/J750, IOT PWB. • 301D +3.3V Distribution RAP. • 301B 0V Distribution RAP. If necessary, install a new bypass tray assembly, PL 70.35 Item 1. If the fault persists, perform the OF7 IOT PWB Diagnostics RAP. Perform the steps that follow: • Ensure that the customer is not filling the tray above the max fill line. • For feeding problems from the bypass tray, perform the 381-155-00 Lead Edge Late to Registration Sensor from Bypass Tray RAP.

• Code: 381-106-00
• Description: Lead Edge Late to TAR 1 Sensor from Tray 1 RAP 381-106-00 The lead edge of the paper failed to actuate the tray 1 TAR sensor within the correct time after feeding paper from tray 1.
• Remedy: NOTE: The front door and left door must be closed, or their respective interlock switches must be cheated when checking +24V components. NOTE: To help fault diagnosis, install the tray 1 paper feed assembly in the tray 2 paper feed assembly position. With tray 1 removed, the operation of the feed assembly can be observed. . Enter dC330 code 081-001, tray 1 TAR sensor, Q81-001. Open the left door. Manually actuate Q81-001. The display changes. Y↓N→Go to Flag 1. Check Q81-001. Refer to: • GP 11 How to Check a Sensor. • P/J750, IOT PWB. • 301E +5V and +5VSB Distribution RAP. • 301B 0V Distribution RAP. If necessary, install a new Tray 1 TAR sensor, PL 80.10 Item 5, If the fault persists, perform the OF7 IOT PWB Diagnostics RAP. Enter dC330 code 080-006, TAR/bypass tray motor, MOT80-006. The motor runs. Y↓N→Go to Flag 2. Check MOT80-006. Refer to: • GP 10 How to Check a Motor. • P/J754, IOT PWB. • 301G +24V Distribution RAP. • 301B 0V Distribution RAP. If necessary, install a new TAR/bypass tray motor, PL 80.25 Item 5. If the fault persists, perform the OF7 IOT PWB Diagnostics RAP. Observe the transport rolls, PL 80.25 Item 7. The transport rolls rotate. Y↓N→Check the transport roll drive belt, drive pulley and pulley, PL 80.25. Install new components as necessary: • Transport roll drive belt, PL 80.25 Item 2. • Pulley, PL 80.25 Item 4. • Transport roll bearing, PL 80.25 Item 6. • Transport roll, PL 80.25 Item 7. Check the nip roll assembly, PL 80.10 Item 10, refer to GP 7. Manually rotate the nip rolls. The nip rolls rotate. Y↓N→Install new components as necessary: • Nip roll assembly, PL 80.10 Item 10. • Tension spring, PL 80.10 Item 7. CAUTION To prevent damage to the feed mechanism, the paper tray must be pulled out before MOT71- 010 is run in service mode. Enter dC330 code 081-010, tray 1 elevator/feed motor, MOT71-010. Pull out the tray. The feed rolls rotate. Y↓N→Remove the feed assembly from the machine. Manually rotate the feed roll shaft. The drive gears rotate. Y↓N→Check the drive gears for damage. If necessary, install new components, PL 80.26. Re-install the tray 1 feed assembly. Go to Flag 3. Check MOT71-010. Refer to: • GP 10 How to Check a Motor. • P/J752, IOT PWB. • 301G +24V Distribution RAP. • 301B 0V Distribution RAP. If necessary, install a Tray 1 elevator/feed motor, PL 80.26 Item 6. If the fault persists, perform the OF7 IOT PWB Diagnostics RAP. Observe the nudger roll, PL 80.26 Item 5. The nudger roll rotates. Y↓N→Check the nudger roll drive belt and drive coupling for damage. If necessary, install new components, PL 80.26. Remove the paper tray. Manually actuate the retard nip split mechanism. The retard roll moves against the feed roll. Y↓N→Check the retard roll drive coupling and mechanism for damage. If necessary, install new components, PL 80.26. Perform the steps that follow: • Clean the feed roll using a cloth dampened with water. • Check the roll assembly, PL 80.26 Item 3. • Check the paper feed assembly, PL 80.26 Item 1.