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4069-5XX/7XX
Error Code
956, 957, 959
System Board
958 NAND
Failure
960 - 963 RAM
Memory Error
964 Emulation
Error
2-6
Service Manual
Action
Error codes 956 thru 959 are system board failures.
Perform a power on reset (POR). If this does not fix the
problem, replace the system board.
*956 = Processor Failure
*957 = ASIC Failure
*959 = SRAM Failure
Before proceeding when a 958 NAND failure is
displayed, perform a Power On Reset (power the printer
Off then On) to see if the ECC (Error Correction Code)
can reflash NAND.
If this does not fix the problem, replace the system
board.
Error codes 960 thru 963 indicate the following specific
RAM error:
*960 - RAM soldered on the system board is failing.
Replace the system board.
*961 - RAM in slot 1 is failing.
*962 - RAM in slot 2 is failing
*963 - RAM in slot 3 is failing.
For errors 961 thru 963, if available, switch memory from
the failing slot with one from a non-failing slot to see if it
fixes the problem. If it does fix the problem, replace the
system board. If this fixes the problem, replace the
defective RAM.
Download Emulation CRC failure has occurred.
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