Epson AcuLaser C8500, Service Manual

Page: 270 / 570

EPSON AcuLaser C8500 Revision C
Chapter 4 Diagnostics 4-2
4.1 Diagnostics by the Diagnostic
Commander
4.1.1 Overview
This printer, AcuLaser C8500 can perform a test print by using the off-
line CONTROLLER PWB.
†
Test print using the jumper setting on MCU PWB (DIP SW):
See Section 4.1.2 “Method of Printing Test Prints”.
†
Test print using the diag board DIP switch setting:
See Section 4.2.1.3 “Overview of the DIAG. PWB”.
4.1.2 Method of Printing Test Prints
1. Remove the RIGHT COVER ASSY.
2. Remove the CONTROLLER PWB.
3. Set paper and turn the power ON.
NOTE: When a tool, such as a mini minus screwdriver, is used, the rest
of the changing Dip-Switch process can be done easily.
NOTE: As for entering the READY mode, confirm that continuous
lighting of H/R HEATER and P/R HEATER became space fault
fire with the next process from the gap in the print outlet of
FUSER ASSY.
4. Turn on Dip-Switch (S1 : It is at the back of the working hole of
CONT.CHASSIS ASSY.) for the test print on MCU PWB in the top of
the interface connector (P11) of MCUPWB after entering the
READY mode
5. Start a print movement by turning on Dip-Switch (S1). (continuous
print is done.)
W A R N I N G
Do not touch conductive parts and during FIRMWARE
parts in the following procedures.