• Code: C-4315
• Description: Front cooling fan (FM18) power abnormality. The FM18EM error detection signal is detected twice in succession within a specified period of time after FM18 was turned ON. At this time, 24V is normal, but an error detection signal (blowout of ICP) is detected.
• Causes: Front cooling fan (FM18) AC drive board (ACDB)
• Remedy: 1 Check the connector connection and the wiring between ACDB and the fun, and repair it if any abnormality. - 2 Rotate the fan by I/O or hand, and repair/replace it if any abnormality. 7-L 3 Replace FM18 and ACDB.

• Code: C-4316
• Description: Front cooling fan (FM18) rotation abnormality. The FM26EM error detection signal is detected twice in succession within a specified period of time after FM18 was turned ON. However, error detection signals (24V cut off/blowout of ICP) are not detected.
• Causes: Front cooling fan (FM18) Printer control board (PRCB) AC drive board (ACDB)
• Remedy: 1 Check the connector connection and the wiring between PRCB and the fun, and repair it if any abnormality. - 2 Check the connector connection and the wiring between ACDB and the fun, and repair it if any abnormality. - 3 Rotate the fan by I/O or hand, and repair/replace it if any abnormality. 7-L 4 Replace FM18. - 5 Replace PRCB. - 6 Replace ACDB.

• Code: C-4701
• Description: FIFO address abnormality for the printer. While in the image write, the expansion processing of image data that is read in is not correctly terminated.
• Causes: Image processing board (IPB)
• Remedy: 1 Check the connector connection and the wiring on IPB, and repair it if any abnormality. - 2 Replace IPB.

• Code: C-4702
• Description: Compression input FIFO abnormality. An error interrupt occurs with the compression/expansion chip FIFO.
• Causes: Image processing board (IPB)
• Remedy: 1 Check the connector connection and the wiring on IPB, and repair it if any abnormality. - 2 Replace IPB.

• Code: C-4703
• Description: Elongation abnormality. Due to the elongation of data the compression of which is not completed, the destruction of the compressed data and the abnormal length of data, an elongation abnormality is detected.
• Causes: DIMM Image processing board (IPB)
• Remedy: 1 Check the connector connection and the wiring on IPB, and repair it if any abnormality. - 2 Check DIMM to see that it is properly set. 21-D 3 Replace DIMM. - 4 Replace IPB.

• Code: C-4705
• Description: Printer time out. • While in the image write, the expansion processing from the memory to the printer does not terminate within a specified period of time. • The output from the page memory to the printer does not terminate within a specified period of time. • The PVV is not detected within a specified period of time.
• Causes: Printer control board (PRCB) Image processing board (IPB)
• Remedy: 1 Check the connector connection and the wiring on IPB, and repair it if any abnormality. - 2 Check the connector connection and the wiring on PRCB, and repair it if any abnormality. - 3 Check the connector connection and the wiring between IPB and PRCB, and repair it if any abnormality. - 4 Replace IPB. - 5 Replace PRCB.

• Code: C-4706
• Description: Expansion device access abnormality. While in the image write, despite of no resource provided, an inappropriate processing such as accessing to the elongation device is made.
• Causes: Image processing board (IPB)
• Remedy: 1 Check the connector connection and the wiring on IPB, and repair it if any abnormality. - 2 Rewrite the firmware for image control. - 3 Replace IPB.

• Code: C-4708
• Description: Expansion device access abnormality. When accessing to the memory device, a defective software is detected.
• Causes: Image processing board (IPB)
• Remedy: 1 Check the connector connection and the wiring on IPB, and repair it if any abnormality. - 2 Rewrite the firmware for image control. - 3 Replace IPB.