fold unit did not change 1 sec. after
the plate started to move.
• Rear fold plate HP sensor harness connector
loose, disconnected, broken
• Fold plate motor (R) defective
• Rear fold plate HP sensor defective
• Undetected paper is jamming the action of the
motor or fold plate
• Fan folder unit MCU defective
790 D PCB fan error: Folder Unit
The machine detected a continuous
lock signal from the PCB cooling
fan on the PSU for 20 sec.
• Fan harness connector loose, disconnected,
broken
• Overload on the fan motor due to physical
obstruction such has undetected paper, etc.
• Fan defective
• MCU folder unit defective
SC8XXX
819
C
Fatal kernel error
Due to a control error, a RAM overflow
occurred during system processing.
• Controller board defective
• Insufficient memory
• Expanded memory defective
Note: For more details about this SC code error, execute SP5990 to print an SMC report so that you can
read the error code. The error code is not displayed on the operation panel.
820
D
Self-Diagnostic Error: CPU
The CPU returned an unexpected error
during the self-diagnostic test.
• Controller board defective
• Insufficient memory
• Expanded memory defective
821
D
Self-diagnostic error 2: ASIC
The ASIC provides the central point for the
control of bus arbitration for CPU access, for
• Controller board defective
SC Code Descriptions
201
4
Summary of Contents for Neptune-P1
Page 1: ...Neptune P1 Machine Code G180 SERVICE MANUAL June 2007 Subject to change...
Page 103: ...1 Installation 102 1...
Page 114: ...Rear Cover 1 Rear cover x 2 A 2 Controller cover B x 1 Paper Exit Unit Common Procedures 113 3...
Page 177: ...3 Remove the SFDB A x 2 x 2 standoffs x 2 3 Replacement and Adjustment 176 3...
Page 180: ...4 Remove the cooling fan D x3 x1 Others 179 3...
Page 402: ...Toner End Recovery Flow Chart Development 401 6...
Page 449: ...6 Details 448 6...
Page 457: ...MEMO 456...