• Code: 341-359-00
• Description: HCF Communications and Detection Error RAP 341-359-00 The HCF has failed to respond to tray 1 and 2 control PWB ping requests.
• Remedy: 1. Ensure the P/Js on the tray 1 and 2 control PWB, PL 70.10 Item 2 and the HCF PWB, PL 70.21 Item 2 are correctly and securely connected. 2. Go to Flag 1. Check the harness. Repair as necessary, GP 7. 3. Go to Flag 1. Check the power supply lines. Refer to: • 301G +24V Distribution RAP. • 301E +5V Distribution RAP. • 301B 0V Distribution RAP. 4. Go to Flag 2. Check for the presence of pulses on the two data lines, using the AC volts range of the meter. NOTE: Pulses should be measured approximately every 20 seconds. Between pulses, the voltage should be approximately 1.5VAC. 5. As necessary, install new components: • Tray 1 and 2 control PWB, PL 70.10 Item 2. • HCF control PWB, PL 70.21 Item 2. 6. Reload the software, GP 4, Machine Software.

• Code: 341-371-00, 41-372-00
• Description: Fuser and Xerographic CRUM Communication Error RAP 341-371-00 The fuser CRUM communications have failed. 341-372-00 The xerographics CRUM communications have failed.
• Remedy: 1. Ensure the P/Js on the IOT PWB, PL 1.10 Item 2 and the main drive motor and PWB assembly, (45-55 ppm) PL 40.15 Item 6 or (65-90 ppm) PL 40.10 Item 6 are correctly and securely connected. 2. Perform the OF7 IOT PWB Diagnostics RAP. 3. Switch off the machine, GP 14. Go to Flag 1. Disconnect P/J8 on the IOT PWB. Switch on the machine, GP 14. Make a copy. Check the fault history for new occurrences of 41- 371-00 and 41-372-00 faults. If new occurrences are not listed, install a new IOT PWB, PL 1.10 Item 2. 4. Go to Flag 1. Check the harness, GP 7 and measure the voltages. As necessary, refer to: • 301B 0V Distribution RAP. • 301E +5V Distribution RAP. NOTE: PJ141 and PJ144 are in-line connectors on the rear panel, (refer to Flag 2 and Flag 3). They are connected when the module is installed and are susceptible to damage. 5. 41-371-00 Only: Go to Flag 2. Check the harness. Remove any torn paper/debris from the fuser CRUM connector, (45-55 ppm) PL 40.17 Item 12 or (65-90 ppm) PL 40.12 Item 12. Repair as necessary. 6. 41-372-00 Only: Go to Flag 3. Check the harness. Remove any torn paper/debris from the xerographic CRUM connector, (45-55 ppm) PL 40.17 Item 4 or (65-90 ppm) PL 40.12 Item 4. Repair as necessary. 7. Install new components as necessary: • 41-371-00 Only: Fuser connector assembly, (45-55 ppm) PL 40.15 Item 9 or (65-90 ppm) PL 40.10 Item 9. • 41-371-00 Only: Fuser Module, (45-55 ppm) PL 10.8 Item 1 or (65-90 ppm) PL 10.10 Item 1. • 41-372-00 Only: Xerographic module, PL 90.20 Item 2. • Main drive motor PWB assembly, (45-55 ppm) PL 40.15 Item 6 or (65-90 ppm) PL 40.10 Item 6. • Main drive module, (45-55 ppm) PL 40.15 Item 1 or (65-90 ppm) PL 40.10 Item 1. 8. Reload the software, GP 4 Machine Software.

• Code: 341-395-00, 341-396-00, 341-852-00
• Description: IOT PWB Fault RAP 341-395-00 The IOT has cycled without printing. 341-396-00 The photoreceptor is detected not turning while the laser is on. 341-852-00 IOT has detected that it is out of timers.
• Remedy: 1. Ensure all the P/Js on the IOT PWB, PL 1.10 Item 2 are correctly and securely connected. 2. 341-395-00 Only: This fault can be caused by a poor ground on the duplex tray or a paper path problem. Check the active fault list for an 8X-XXX or 9X-XXX fault. Go to the indicated RAP. This fault can also be caused by a paper guide in a paper tray being set to the wrong paper size. Check the paper guide settings in the paper trays. 3. Reload the software set, GP 4, Machine Software. NOTE: The supply harness is a flying lead that is a part of the LVPS and is not spared separately. 4. Go to Flag 1. Check the voltages. As necessary, refer to: • 301G +24V Distribution RAP. • 301F +12V Distribution RAP. • 301E +5V Distribution RAP. • 301D +3.3V Distribution RAP. • 301B 0V Distribution RAP. 5. 341-396-00 Only: If necessary, go to the 340A Main Drive Motor and Photoreceptor Motor RAP. Perform the photoreceptor motor checkout. 6. Perform the 301L LVPS Checkout RAP. 7. Perform the OF7 IOT PWB Diagnostics RAP.

• Code: 341-397-00
• Description: Main Motor Not Controlled RAP 341-397-00 The IOT software has detected that the main motor is not being controlled. The software that monitors the main motor and the photoreceptor motor was not reset within the expected time.
• Remedy: Ensure that the connectors on the components that follow are securely connected: • IOT PWB, PL 1.10 Item 2. • LVPS and base module, PL 1.10 Item 3. • Main drive motor and PWB, (45-55 ppm) PL 40.15 Item 6 or (65-90 ppm) PL 40.10 Item 6. The fault is still present. Y↓N→Perform SCP 5 Final Actions. Go to Flag 1 and Flag 2. Check the wiring, GP 7. The wiring is good. Y↓N→Repair the wiring, GP 7. Go to Flag 1. Check the voltages at P/J16, pins 1 and 2 on the LVPS. The voltages are correct. Y↓N→As necessary, refer to: • 301B 0V Distribution RAP. • 301G +24V Distribution RAP. Go to Flag 2. Measure the voltage at P/J3 pin 3, on the IOT PWB. Enter dC330 code 042-010, Main Motor On. Stack the photoreceptor motor code, 091-010. The voltage changes from high to low and the main motor runs. Y↓N→Install a new main drive motor and PWB, (45-55 ppm) PL 40.15 Item 6 or (65-90 ppm) PL 40.10 Item 6. If the fault remains, perform the OF7 IOT Diagnostics RAP. Reload the software, GP 4, Machine Software. The fault is still present. Y↓N→Perform SCP 5 Final Actions. Install a new main drive motor and PWB, (45-55 ppm) PL 40.15 Item 6 or (65-90 ppm) PL 40.10 Item 6. If the fault remains, perform the OF7 IOT Diagnostics RAP.

• Code: 361-020-00
• Description: ROS Motor Failure RAP 361-020-00 This fault code has two failure modes: • The ROS motor ready signal was not received by the IOT PWB within the set time of the ROS being powered on. • The IOT PWB recognizes a change of state of the ROS motor ready signal during operation.
• Remedy: Switch off the machine, then switch on the machine, GP 14. The 361-020 fault still exists. Y↓N→Perform SCP 5 Final Actions. Enter the dC330 output code 061-020 and listen for the ROS motor. The ROS motor gives a distinctive ascending frequency sound, of a short duration (5 to 6 seconds) during transition from standby to run. Y↓N→The xerographic module is fully home and the front door is fully closed or the front door interlock is cheated. Y↓N→Correct the condition. If necessary go to the 301-300-00 Front Door Open RAP. Go to Flag 1. Check the following voltages at P/J18 on the LVPS: • +24V between pins 1 and 2. • +3.3V between pins 3 and 4. The voltages are good. Y↓N→Go to the relevant RAP: • 301B 0V Distribution RAP, refer to the 3.3V return and 24V return. • 301D +3.3V Distribution RAP. • 301G +24V Distribution RAP. Enter the dC330 output code 061-020 to run the ROS motor. Go to Flag 2. 0V is available at P/J2 pin 1 on the IOT PWB. Y↓N→Go to Flag 3. 0V is available at P/J2 pin 6 on the IOT PWB. Y↓N→Perform the OF7 IOT PWB Diagnostics RAP. NOTE: To disconnect P/J1 and P/J2 the ROS must be removed from the machine, refer to. The ROS PWB may not be marked with the correct PJ numbers, where P/J1 and P/J2 are connected. P/J1 can be identified as a four way power harness. P/J2 can be identified as a seven way signal harness. Go to Flag 1, Flag 2 and Flag 3. Disconnect P/J1 and P/J2. Check the wiring. The wiring is good. Y↓N→Repair the wiring. Install a new ROS, PL 60.10 Item 4. Perform the OF7 IOT PWB Diagnostics RAP. Go to Flag 2. 0V is available at P/J2 pin 1. Y↓N→NOTE: To disconnect P/J1 and P/J2 the ROS must be removed from the machine. The ROS PWB may not be marked with the correct PJ numbers, where P/J1 and P/J2 are connected. P/J1 can be identified as a four way power harness. P/J2 can be identified as a seven way signal harness. Check the continuity of the seven way signal harness between P/J2 on the ROS and P/ J2 on the IOT PWB. The harness is good. Y↓N→Install a new ROS power distribution/communication harness, PL 60.10 Item 5. Install a new ROS, PL 60.10 Item 3. If the fault condition persists, perform the following: • Check the condition of the associated wiring and connectors. Repair the wiring or install new components as necessary. • Install a new ROS, PL 60.10 Item 4. • Perform the OF7 IOT PWB Diagnostics RAP.

• Code: 361-340-00
• Description: ROS Laser Failure RAP 361-340-00 The IOT PWB has not detected the ROS laser reaching the operating speed.
• Remedy: Go to Flag 3. Connect a service meter to P/J2 pin 7 and make a set of 5 copies. 0V is measured at P/J2 pin 7 on the IOT PWB during run. Y↓N→The xerographic module is fully home and the front door is fully closed or the front door interlock is cheated. Y↓N→Correct the condition. Go to Flag 1. Disconnect P/J18 from the LVPS. Check the following voltages on the LVPS: • +24V between pins 1 and 2. • +3.3V between pins 3 and 4. The voltages are good. Y↓N→Go to the relevant RAP: • 301B 0V Distribution RAP, refer to the 3.3V return and 24V return. • 301D +3.3V Distribution RAP. • 301G +24V Distribution RAP. Enter the dC330 output code 061-020 and listen for the ROS motor. Go to Flag 2.. The ROS motor gives a distinctive ascending frequency sound, of a short duration (5 to 6 seconds) during transition from standby to run. Y↓N→Go to the 361-020-00 ROS Motor Failure RAP. NOTE: . To disconnect P/J1 and P/J2 the ROS must be removed from the machine. The ROS PWB may not be marked with the correct PJ numbers, where P/J1 and P/J2 are connected. P/J1 can be identified as a four way power harness. P/J2 can be identified as a seven way signal harness. Check the wiring at Flag 1, Flag 2 and Flag 3. . The wiring is good. Y↓N→Repair the wiring or install a new harness, PL 60.10 Item 5. Install a new ROS, PL 60.10 Item 4. Go to Flag 4. Check that P/J112 on the SBC PWB is securely connected. If the fault is still present, remove the ROS. If the fault is still present, go to Flag 4. Check the continuity of the ROS data cable ( P/J112 to P/J7).. The ROS data cable is good. Y↓N→Install a new ROS power distribution/communications harness, PL 60.10 Item 5. Install a new ROS, PL 60.10 Item 4. If the fault remains, perform the following as necessary: • 303D SBC PWB Diagnostics RAP. • OF7 IOT PWB Diagnostics RAP.

• Code: 361-350-00
• Description: ROS Laser Not Under Control RAP 361-350-00 The IOT monitor has not received a reset command from the IOT ROS controller for more than 5 seconds during print.
• Remedy: 1. Ensure all the P/Js on the IOT PWB, PL 1.10 Item 2 are correctly and securely connected. 2. Perform the OF7 IOT PWB Diagnostics RAP. 3. Reload the software set, GP 4, Machine Software. NOTE: The supply harness is a flying lead that is a part of the LVPS and is not spared separately. 4. Go to Flag 1. Check the voltages. As necessary, refer to: • 301G +24V Distribution RAP. • 301F +12V Distribution RAP. • 301E +5V Distribution RAP. • 301D +3.3V Distribution RAP. • 301B 0V Distribution RAP. 5. Perform the following as necessary: • OF7 IOT PWB Diagnostics RAP. • 301L LVPS Checkout RAP.

• Code: 362-310-00
• Description: Scanner to SBC Communications Failure RAP 362-310-00 A communication failure has occurred between the Scanner and the SBC.
• Remedy: Go to Flag 1. Disconnect then check the SBC PWB/Scanner PWB data cable and connectors P/J411 on the scanner PWB and P/J250 on the SBC PWB. The data cable and connectors are clean and undamaged. Y↓N→Clean the connectors. Install new components as necessary: • SBC PWB/Scanner PWB data cable, PL 3.22 Item 20. • Scanner PWB, PL 60.20 Item 4. If the fault remains, perform the 303D SBC PWB Diagnostics RAP. Perform the following actions: • Install a new SBC PWB/Scanner PWB data cable, PL 3.22 Item 20. • Install a new scanner PWB, PL 60.20 Item 4. • The 303D SBC PWB Diagnostics RAP.