• Code: 953.01 ... 953.99
• Display: 953.01–953.99 NVRAM Failure
• Description: Operator panel assembly NVRAM.
• Remedy: POR the printer. Replace operator panel assembly if the error message persists.

• Code: 954.01 ... 954.99
• Display: 954.01–954.99 NVRAM Failure
• Description: System card NVRAM failure.
• Remedy: POR the printer. If the error message persists, replace the system card.

• Code: 955.01 ... 955.99
• Display: 955.01–955.99 Code Failure
• Description: System card memory failure.
• Remedy: POR the printer. If the error message persists, replace the system card.

• Code: 956.01 ... 956.99
• Display: 956.01–956.99 System card
• Description: Processor failure.
• Remedy: POR the printer. If the error message persists, replace the system card.

• Code: 958.01 ... 958.99
• Display: 958.01–958.99 Memory Failure
• Description: Processor failure.
• Remedy: POR the printer. If the error message persists, replace the system card.

• Code: 960.01 ... 960.99
• Display: 960.01—960.99 Memory Error
• Description: Memory failure.
• Remedy: RAM soldered on card is bad. Replace the system card.

• Code: 961.01 ... 961.99
• Display: 961.01–961.99 Memory Failure
• Description: Memory failure.
• Remedy: POR the printer. If the error message persists, replace the system card.

• Code: 990.xx
• Display: 990.xx Option Error
• Description: Tray 2 failure.
• Remedy: Replace 500-sheet assembly.