SERVICE MANUAL
2–8
10FEB97 – SM3226-1
System Controller Board
Warning
Dangerous Voltage.
[1] De-energize the LASER PRINTER.
[2] Remove the FRONT CONTROL UNIT COVER.
If necessary, see the procedure on Page 2–2.
Caution
Possible damage from electrostatic discharge.
[3] Disconnect the CONNECTOR from the
SYSTEM CONTROLLER BOARD.
[4] Loosen the 2 SCREWS.
[5] Remove the SYSTEM CONTROLLER BOARD.
Note
A white dot is silk-screened on the circuit board next to pin position 1 for each jumper.
JUMPERS
[6] Check that the following Jumpers have been be installed:
J1-1 to J1-2
J2-1 to J2-2
J3-3 to J3-4
J4-3 to J4-4
J5-1 to J5-2, J5-4 to J5-5, J5-7 to J5-8, J5-10 to J5-11
J8-2 to J8-3
J9-1 to J9-2
J11-1 to J11-2
J12-1 to J12-2
J14-3 to J14-4
J15-1 to J15-2, J15-3 to J15-4
J16-1 to J16-2, J16-3 to J16-4, J16-5 to J16-6
J17-1 to J17-2
J18-1 to J18-3, J18-4 to J18-6, J18-5 to J18-7
J19-3 to J19-5, J19-4 to J19-6
J21-1 to J21-2
H129_1700AC
H129_1700ACC
CONNECTOR
CARD
RACK
SCREW (2)
SYSTEM
CONTROLLER
BOARD