• Code: 009-430
• Description: Change Magenta Imaging Unit Soon The Magenta Imaging Unit must be replaced soon.
• Remedy: Replace the Magenta Imaging Unit. The problem is corrected. Y↓N→Replace the Engine Control Board (MCU PWB) (PL 13.1). Return to Service Call Procedures.

• Code: 009-431
• Description: Change Cyan Imaging Unit Soon The Imaging Unit (C) must be replaced soon.
• Remedy: Replace the Cyan Imaging Unit. The problem is corrected. Y↓N→Replace the Engine Control Board (MCU PWB) (PL 13.1). Return to Service Call Procedures.

• Code: 009-446
• Description: Black Imaging Unit End of Life The Black Imaging Unit must be replaced.
• Remedy: Replace the Black Imaging Unit (PL 4.1). The problem is corrected. Y↓N→Replace the Engine Control Board (MCU PWB) (PL 13.1). Return to Service Call Procedures.

• Code: 009-447
• Description: Cyan Imaging Unit End of Life The Cyan Imaging Unit must be replaced.
• Remedy: Replace the Cyan Imaging Unit (PL 4.1). The problem is corrected. Y↓N→Replace the Engine Control Board (MCU PWB) (PL 13.1). Return to Service Call Procedures.

• Code: 009-448
• Description: Magenta Imaging Unit End of Life The Magenta Imaging Unit must be replaced.
• Remedy: Replace the Magenta Imaging Unit (PL 4.1). The problem is corrected. Y↓N→Replace the Engine Control Board (MCU PWB) (PL 13.1). Return to Service Call Procedures.

• Code: 009-449
• Description: Yellow Imaging Unit End of Life The Yellow Imaging Unit must be replaced.
• Remedy: Replace the Yellow Imaging Unit (PL 4.1). The problem is corrected. Y↓N→Replace the Engine Control Board (MCU PWB) (PL 13.1). Return to Service Call Procedures.

• Code: 009-451 ... 09-459
• Description: C, M, Y, K Dev Near Life or Dev Near Life End This procedure covers Dev Near Life or Dev Near Life End for C, M, Y, and K Developers. This procedure can be used for troubleshooting Chain Link code 009-451, 009-452, 009-453, 009- 454, 009-455, 009-456, 009-457, 009-458, or 009-459.
• Remedy: 1. Replace the Developer and Developer Beads of the color indicated (PL 6.2). 2. After the Developer has been replaced, reset the Developer Life Count in the Service Tools menu. NOTE: It is recommended that all the Developers and Beads be replaced at one time rather than on successive visits.

• Code: 009-654
• Description: ADC Sensor Fail The control logic detected an ADC Sensor operation failure.
• Remedy: Perform the ADC Output Check, ADJ 9.4 (). The check of the ADC Sensor is OK. Y↓N→There is +5 VDC from J404B-8 on the MCU PWB to GND. Y↓N→Check the wires and connectors. If the check is OK, replace the Engine Control Board (MCU PWB) (PL 13.1). Enter Service Diagnostics Menu: Printer Menu > Troubleshooting > Service Tools > Printer Status Page > hold the Up and Down buttons simultaneously > Run Service Diagnostics > OK. Perform the ADC Sensor test. The ADC Shutter Solenoid energized (PL 1.3). Y↓N→Check the wires and connectors. If the check is OK, replace the Engine Control Board (MCU PWB) (PL 13.1). There is 0 VDC from J404B-3 on the I/F PWB to GND. Y↓N→Check the wires and connectors. If the check is OK, replace the MCU PWB (PL 13.1). The voltage from J404B-1 to GND changed to 0VDC momentarily. Y↓N→Check the wires and connectors. If the check is OK, replace the MCU PWB (PL 13.1). Check the wires and connectors. If the check is OK, replace the, replace the ADC Sensor Assembly (PL 1.3). After checking that no failures are detected during normal operation, go to call closeout.