OKIDATA DOC-IT3000, Service Manual

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Service Guide DOC-IT3000/4000
Chapter 3 Maintenance & Disassembly
3.2.29 Engine Controller Board (SPPY)
· Disconnect the cables from the connectors J1 - DC fan (1), J2 - fuser thermistor (2), and
J5 - paper supply unit (3).
· Open the LED holder to allow access to the engine board mounting screw (4) and
remove the mounting screw.
· Close the LED holder and raise the upper unit.
· Remove the three remaining mounting screws (5 A and B).
· Lift the engine controller board (6) to disconnect it from the interconnect board (7).
CAUTION:
Be careful not to lose the plastic spacer (8) located between the shield frame and the engine
controller board. When installing the engine controller board, be sure that the spacer is in place or
the engine controller board will short against the shield frame.
· On the engine controller board, press the pawls (9) to unlock and remove the board
cover (10).
Board Replacement
· Remove EEPROM and EPROM. Install the EEPROM and EPROM on the new board. If
you do not move the EEPROM and EPROM from the old board to the new board, all
customized set-up information will be lost.
Board Installation
· Be sure that the spacer is in place.
· Route the thermistor cable to J2 so it does not obstruct the movement of the outlet
sensor.
· Connect the paper supply unit cable to the engine controller circuit board via the groove
in the shield plate.
· Mounting screws 4A and 5A are longer than the two mounting screws 5B.
P/N 53528401 Cover: Board RSPL B.2.08
P/N 31086001 EPROM for SPPY B.2.08
P/N 55934301 IC: EEPROM for SPPY RSPL B.2.08
P/N 55066802 PCB: SPPY w/o ROM RSPL B.2.08 Engine
Controller