• Code: 393.962
• Description: Toner C CRUM Data Mismatch Fail. Incorrect authentication area data was detected in the Yellow Toner CRUM. This fault is displayed if a different type of Toner cartridge is installed than what the printer is currently set to accept. The types of toner are: NA/XE, DMO, FX and Metered.
• Remedy: An Error Message appears on the UI - Reinsert an improperly seated consumable or replace any consumables with Error. Press Machine Status button and select Supplies tab for details. Remove and reinstall the Cyan Toner Cartridge and check for improper installation. The problem continues Y↓ N→End Contact second level support to obtain a secure snippet to reset the printer to the neutral configuration. You will need the printer's serial number and current print count. The snippet will be effective if installed within 500 prints of the current print count. After sending the snippet, the next toner cartridge installed will set the region code so make sure that the cartridge installed is the correct one for the region. Is the issue still present after sending the secure snippet? Y↓ N→End. 1. Polish the connection terminals between the Toner Cartridge (C) CRUM PWB and the Toner CRUM Coupler Assembly (C) CRUM with dry cloth. (When cleaning, do not use Drum cleaner, etc.) 2. Check the following: • The connection between the MCU PWB P/J411 and the Toner CRUM Coupler Assembly (C) P/J122 for open circuit, short circuit, and poor contact • The connection terminals between the Toner Cartridge (C) CRUM PWB and the Toner CRUM Coupler Assembly (C) CRUM for damage and foreign substances • The Toner Cartridge (C) for improper installation If no problems are found, replace the following parts in sequence: • Toner Cartridge (M) • Toner CRUM Coupler Assembly (M) (PL 5.1) • MCU PWB

• Code: 393.970
• Description: Toner Y CRUM Not In Position. The Toner CRUM (Y) is not in the proper position.
• Remedy: 1. Remove and reinstall the Toner Cartridge (Y). 2. Polish the connection terminals between the Toner Cartridge (Y) CRUM PWB and the Toner CRUM Coupler Assembly (Y) CRUM with dry cloth. (When cleaning, do not use Drum cleaner, etc.) 3. Check the following: • The connection between the MCU PWB P/J411 and the Toner CRUM Coupler Assembly (Y) P/J120 for open circuit, short circuit, and poor contact • The connection terminals between the Toner Cartridge (Y) CRUM PWB and the Toner CRUM Coupler Assembly (Y) CRUM for damage and foreign substances • The Toner Cartridge (Y) for improper installation If no problems are found, replace the following parts in sequence: • Toner Cartridge (Y) • Toner CRUM Coupler Assembly (Y) (PL 5.1) • MCU PWB • Go to 393.960 Toner Y CRUM Data Mismatch Fail

• Code: 393.971
• Description: Toner M CRUM Not In Position. The Toner CRUM (M) is not in the proper position.
• Remedy: 1. Remove and reinstall the Toner Cartridge (M). 2. Polish the connection terminals between the Toner Cartridge (M) CRUM PWB and the Toner CRUM Coupler Assembly (M) CRUM with dry cloth. (When cleaning, do not use Drum cleaner, etc.) 3. Check the following: • The connection between the MCU PWB P/J411 and the Toner CRUM Coupler Assembly (M) P/J121 for open circuit, short circuit, and poor contact • The connection terminals between the Toner Cartridge (M) CRUM PWB and the Toner CRUM Coupler Assembly (M) CRUM for damage and foreign substances • The Toner Cartridge (M) for improper installation If no problems are found, replace the following parts in sequence: • Toner Cartridge (M) • Toner CRUM Coupler Assembly (M) (PL 5.1) • MCU PWB • Go to 393.961 Toner M CRUM Data Mismatch Fail

• Code: 393.972
• Description: Toner C CRUM Not In Position. The Toner CRUM (C) is not in the proper position.
• Remedy: 1. Remove and reinstall the Toner Cartridge (C). 2. Polish the connection terminals between the Toner Cartridge (C) CRUM PWB and the Toner CRUM Coupler Assembly (C) CRUM with dry cloth. (When cleaning, do not use Drum cleaner, etc.) 3. Check the following: • The connection between the MCU PWB P/J411 and the Toner CRUM Coupler Assembly (C) P/J122 for open circuit, short circuit, and poor contact • The connection terminals between the Toner Cartridge (C) CRUM PWB and the Toner CRUM Coupler Assembly (C) CRUM for damage and foreign substances • The Toner Cartridge (C) for improper installation If no problems are found, replace the following parts in sequence: • Toner Cartridge (C) • Toner CRUM Coupler Assembly (C) (PL 5.1) • MCU PWB • Go to 393.962 Toner C CRUM Data Mismatch Fail

• Code: 394.300
• Description: IBT Front Cover Open. The Front Cover Open was detected by the IBT Front Cover Switch.
• Remedy: Check the following: • The Front Cover for damage or mismatch. • The IBT Front Cover Switch for failure: dc330 Component Control [077-307] (PL 18.5 Item 10) • The connection between the IBT Front Cover Switch P/J272 and the MCU PWB P/J416 for open circuit, short circuit, and poor contact If no problems are found, replace the MCU PWB.

• Code: 394.320
• Description: 1st BTR Contact/Retract Fault. After the 1st BTR Contact/Retract operation has started, it does not complete within the specified time.
• Remedy: Remove the 1st BTR Contact Retract Sensor Bracket. Turn the power On and enter Service Diag mode (Entering Service Diagnostics). Turn On dc330 Component Control [094-200]. Use a sheet of paper, etc. to block/clear the light path to the 1st BTR Contact Retract Sensor. Does the display change between High/Low? Y↓ N→Use Transmissive Sensor RAP to fix the 1st BTR Contact Retract Sensor. Press the Stop button and turn the power Off. Install the 1st BTR Contact Retract Sensor Bracket. Turn the power ON and enter Service Diag mode. Turn On dc330 Component Control [094- 012] (Contact) and DC330 [094-013] (Retract) alternately. Does it contact/retract? Y↓ N→Remove the IBT and check the following: • The IBT Assembly for mechanical loading or damage • The 1st BTR Contact Retract Gear for wear, damage, and operation failure • The 1st BTR Contact Retract Clutch for improper installation • The 1st BTR Contact Retract Sensor for improper installation • The connection between the 1st BTR Contact Retract Clutch P/J250 and the MCU PWB P/J417 for open circuit, short circuit, and poor contact If no problems are found, replace the 1st BTR Contact Retract Clutch (PL 3.2). Press the Stop button and turn the power Off. Replace the MCU PWB.

• Code: 394.323
• Description: 2nd BTR Contact/Retract Fault. After the 2nd BTR Contact/Retract operation has started, it does not complete within the specified time.
• Remedy: Turn the power On and enter the Diag mode. Turn On dc330 Component Control [094-201]. Move the Shielding Board of the 2nd BTR Contact Retract Sensor manually to block/clear the light path to the 2nd BTR Contact Retract Sensor. Does the display change between High/ Low? Y↓ N→Use Transmissive Sensor to fix the 2nd BTR Contact Retract Sensor. Press the Stop button. Turn On DC330 [094-003] (Contact) and DC330 [094-004] (Retract) alternately. Does it contact/retract? Y↓ N→Remove the IBT and check the following: • The 2nd BTR Contact Retract Gear for wear, damage, and revolution failure • The 2nd BTR Contact Retract Motor for improper installation • The 2nd BTR Contact Retract Sensor for improper installation • The connection between the 2nd BTR Contact Retract Motor P/J280 and the MD PWB P/J523 for open circuit, short circuit, and poor contact If no problems are found, replace the 2nd BTR Contact Retract Motor (PL 14.4). Press the Stop button and turn the power Off. Replace the following parts in sequence: • MD PWB • MCU PWB

• Code: 394.324
• Description: Belt Home Fail Too Long. 1. The engine senses that the IBT Belt Drive Motor is not turning. 2. Or, the MOB Sensor does not see RegiCon chevrons on the IBT Belt.
• Remedy: 1. Perform the following steps: • Check the IBT Belt Cleaner blade. If the blade is not adequately lubricated it can cause drag on the IBT Belt. The blade edge can be lubricated with waste toner from the Belt Cleaner assembly. • Check the IBT Belt Unit for mechanical loading and damage. • Perform the IBT Belt Motor test in Diagnostics. • If the belt is turning, perform a stall test while the printer is initializing and see if the RegiCon chevrons are printing on the belt. If the chevrons are printing and the IBT belt is moving. Examine the MOB Sensor for obstructions. • If the IBT Belt does not turn when the IBT Belt Motor test is performed in diagnostics, remove the IBT Belt Assembly and run the IBT Belt Motor test again in diagnostics. If the Motor does not turn, replace the following parts in sequence: – IBT Drive Motor Assembly – Motor Drive PWB • If the IBT Belt Motor runs when the IBT Belt Motor test is performed in diagnostics with the IBT Belt Assembly removed, diagnose and repair condition causing the belt assembly to bind. • Test the MOB shutter open/closed in diagnostics. If the shutter open/ closed test fails, replace the MOB ADC Assembly. NOTE: A temporary repair to allow the customer to use the printer if a MOB Sensor is not available and the shutter is not functioning correctly, is to remove the shutter from the MOB Assembly until a replacement assembly can be installed. 2. If no problems are found, replace the following parts in sequence: • IBT Belt Unit • MCU PWB