03/10 Rev. 5.04-04 SERVICE MANUAL Service Mechanics
64-xx – 64-xx Dispenser
62
Motor driver board
Three motor driver
board (1) is installed in
the standard printer 3-5
times, depending on
the printer configu-
ration. Each motor
driver controls one
stepper motor (at least
head motor, ribbon
motor and feed motor).
The control data is
transmitted from the
mainboard via an I
2
C
bus.
Sensors which deliver
the information for
controlling the motors
are also connected to
the motor driver boards.
Disassembling/assembly
1. Pull off the mains plug and remove the
rear hood of the printer.
2. Detach all plug connectors from the
board.
3. Unscrew the two Allan key screws at the
board heat sink (2).
The heat sink remains connected with
the board.
4. Replace the board and heat sink.
The motor driver boards must be
prepared for "their" motor by setting a
jumper.
Notes about setting jumpers can be
found in the topic section "Electronics
Gen. 2", chapter “Output stage board”.
Tool
– Allan key size 2.5
2
2
1 1 1
1 1 1 1 1
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