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3501 Logic/Control Board
Removal
1.
Switch off the printer power.
2.
Remove the top cover (3052).
3.
Remove the logic/control board safety cover
(3502).
4.
Disconnect:
a.
Motor cable connectors P5
G
and P7
O.
b.
End-of-forms/print emitter cable connector
P8G·
c.
Mode switch cable connector P 13
G.
d.
Forms emitter cable connector P9
e.
e.
Signal cable connector P6
O.
f.
The resistor wires
e.
5.
Remove the print head cable clamp mounting
screws
e
and disconnect print head cable
connector P4 at
CD.
6.
Remove the two cartridge bracket mounting
screws
e;
remove the cartridge bracket.
7.
Remove the cartridge socket mounting screws
G).
8.
Press outward on the right and left logic/control
board mounting clip arms
e
and lift the front of
the card until it is free of the arms.
9.
Remove the logic/control board by pulling it
forward until it is released from the three rear
mounting clips
e.
10. Disconnect power supply cable connector P3
E).
Reinstallation
Note: See Logic/Control Board Layout (3005) and
Wiring Diagram (Appendix B) as required to aid in
3-100
SY34-0613
installation.
1.
Connect power supply cable connector P3
E).
2.
Slide the rear edge of the logic/control board
against the three rear mounting clips
e
and under
the clip arms.
3.
Lower the front edge of the board into place; it
should be held by the right and left mounting clips
e·
4.
Reinstall the two cartridge socket mounting
screws
G).
5.
Reinstall the cartridge bracket.
6.
Reinstall cartridge bracket mounting screws
e.
7.
Connect print head cable connector P4
0
and
install the cable clamp with the screws
e.
Ensure
that the cable is flat against the flat spring.
8.
Connect:
a.
Power motor cable connectors P5
0
and P7
O·
b.
End-of-forms/print emitter cable connector
P8G·
c.
Mode switch connector P13
G.
d.
Forms emitter cable connector P9
e.
e.
Signal cable connector P6
O.
f.
The resistor wires
e.
9.
Reinstall the logic/control board safety cover
(3502).
10. Reinstall the top cover (3052).
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