Lexmark 5021-0XX Controller board removal on, Panel cable removal on, To RIP board removal on

	5021-0XX
Error code	Action
946	Turn power off and then back on.
Engine controller	If error still exists, replace engine controller board.
hardware error	Go to “Engine controller board removal” on
	page 4-55.
947	Indicates synchronization signal from main motor
Process timing clock	(MM) is not inputted.
	Go to “911—Main motor service check” on
error
	page 2-48.
953	Indicates engine board NVRAM failed.
NVRAM chip failure	Replace engine controller board. Go to “Engine
	controller board removal” on page 4-55.
954	Indicates the operator panel failed CRC check.
NVRAM CRC failure	Replace the operator panel cable. Go to “Operator
	panel cable removal” on page 4-54.
955	Indicates that on-board NAND flash located on RIP
Code CRC	board has failed CRC check. Replace RIP board. Go
	to “RIP board removal” on page 4-45.
955	Indicates that on-board NAND flash located on RIP
Code ECC	board has failed CRC check. Replace RIP board. Go
	to “RIP board removal” on page 4-45.
956	Indicates a problem with RIP board processor.
Processor failure	Replace RIP board. Go to “RIP board removal” on
	page 4-45.
957	Indicates a problem with RIP board ASIC. Replace
ASIC failure	RIP board. Go to “RIP board removal” on
	page 4-45.
958	Indicates that on-board NAND flash located on RIP
NAND failure	board has failed. Replace RIP board. Go to “RIP
	board removal” on page 4-45.
959	Indicates a problem with RIP board SRAM. Replace
SRAM failure	RIP board. See “RIP board removal” on page 4-45.
960	Indicates that RIP board soldered RAM is bad.
Memory error	Replace RIP board. Go to “RIP board removal” on
	page 4-45.

Diagnostic information 2-5