Diagnostic Led Flash Sequences - Xerox DOCUPRINT N4525 Advanced Features And Troubleshooting Manual

Troubleshooting

Diagnostic LED Flash Sequences

When the printer is powered ON, it runs a sequence of self test diagnostics. Some failures
are detected in these tests and are identified by a flashing sequence indicated on the
system controller diagnostic LED located on the controller board at the rear of the printer.
Flash sequence
1 flash —1 second — 1 flash...etc.
2 flashes — 1 second — 2
flashes...etc.
3 flashes — 1 second — 3 flashes...etc. A ROM fault has occurred.
4 flashes — 1 second — 4 flashes...etc. An ASIC or timer fault has occurred.
5 flashes — 1 second — 5 flashes...etc. A resolution enhancement self-test fault has occurred.
6 flashes — 1 second — 6 flashes...etc. A communications ports internal loopback test fault has
8 flashes —1 second — 8 flashes...etc.
9 flashes — 1 second — 9 flashes...etc. A hard disk failure has occurred.
10-12 flashes — 1 second — 10-12
flashes...etc.
15 flashes — 1 second —15
flashes...etc.
16 flashes — 1 second — 16
flashes...etc.
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Description and corrective action
A System controller CPU fault has occurred.
Contact your Customer Support Center.
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A Base RAM fault has occurred.
Contact your Customer Support Center.
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Contact your Customer Support Center.
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Make sure the controller board is firmly seated.
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If the problem is not resolved, contact your Customer
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Support Center.
Contact your Customer Support Center.
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occurred.
Contact your Customer Support Center.
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A system controller to print engine fault has occurred.
Make sure the controller board is firmly seated.
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If problem is not resolved, contact your Customer Support
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Center.
Make sure the hard drive is firmly seated on the controller
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board.
If problem is not resolved, contact your Customer Support
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Center.
A slot DIMM1 - DIMM3 fault has occurred:
10 flashes = DIMM1 fault
11 flashes = DIMM2 fault
12 flashes = DIMM3 fault
Power OFF the printer, remove and reinstall the DIMM, and
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Power ON the printer.
If still flashing at Power ON, replace the DIMM.
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An image enhancement fault has occurred.
Contact your Customer Support Center.
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An interface option card failure has occurred.
Make sure the interface card is firmly seated.
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If problem is not resolved, contact your Customer Support
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Center.
DocuPrint N4525 Network Laser Printer