• Code: 53
• Display: 53.<x><y>.<zz> ERROR DIMM SLOT <n>
• Description: Indicates that a memory error occurred during the configuration and validation of DIMM memory.
  <x> = Hardware type: 0 = ROM 1 = RAM 2 = Font DIMM
  <y> = Hardware device: 0 = Onboard ROM/RAM 1 = DIMM slot 1 2 = DIMM slot 2 3 = DIMM slot 3 4 = DIMM slot 4 5 = DIMM slot 5 6 = DIMM slot 6 7 = DIMM slot 7 8 = DIMM slot 8
  <zz> = Error: 00 = Unsupported memory 01 = Unrecognized memory 02 = Unsupported memory size 03 = Failed RAM test 04 = Exceeded maximum RAM size 05 = Exceeded maximum ROM size 06 = Invalid DIMM speed; check DRAM 07 = DIMM is reporting incorrect checksums 10 = DIMM address 11 = PDC XROM out of bounds 12 = Could not make temporary mapping 13 = Invalid RAM type 14 = DIMM not paired properly 15 = Bad firmware upgrade DIMM checksum 16 = More than one set of firmware upgrade DIMMs 17 = Not enough DRAM to run
  <n> = EIO slot number: 1 = Bottom EIO slot 2 = Top EIO slot
• Remedy: 1 Verify that the DIMM board is installed correctly and the DIMMs are configured correctly. DRAM DIMMs must be installed in synchronous pairs in adjacent slots, with the same size and speed in both slots. Only SDRAM is supported. 2 Turn the printer off and on to reset the printer. 3 Remove and replace the DIMM that caused the error.

• Code: 54.00.03
• Display: 54.00.03
• Description: DUPLEX ERROR CHECK DUPLEXER
• Remedy: DUPLEX ERROR CHECK DUPLEXER

• Code: 54.00.05
• Display: 54.00.05
• Description: Sensor abnormality.
• Remedy: CLEAN DENSITY SENSOR CYCLE POWER

• Code: 54.00.06
• Display: 54.00.06
• Description: Out of range cyan.
• Remedy: CLEAN DENSITY SENSOR CYCLE POWER

• Code: 54.00.07
• Display: 54.00.07
• Description: Out of range magenta.
• Remedy: CLEAN DENSITY SENSOR CYCLE POWER

• Code: 54.00.08
• Display: 54.00.08
• Description: Out of range yellow.
• Remedy: CLEAN DENSITY SENSOR CYCLE POWER

• Code: 54.00.09
• Display: 54.00.09
• Description: Out of range black.
• Remedy: CLEAN DENSITY SENSOR CYCLE POWER

• Code: 54.1
• Display: 54.1 TEMPERATURE SENSOR ERROR CYCLE POWER
• Description: Indicates that the temperature/humidity sensor in the printer has malfunctioned. The temperature/ humidity sensor is located below tray 2.
• Remedy: 1 Reconnect connector J801 and relay connector J55 on the temperature/humidity sensor, and connector J206 on the controller board. 2 Replace the cassette crossmember assembly which includes the temperature/humidity sensor. 3 Replace the controller board.