SATO GL4XXE Manual de servicio Pagina 148

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Unit 7: Replacement Procedures
GL4xxe Series Service Manual
7-9
STEPPER MOTOR DRIVER PCB REPLACEMENT
The power board contains the printers transformers, relays, etc., for transferance of electrical current from the
source supply to the printer’s control circuits. Prior to accessing this board, repeat procedures shown in earlier
sections for the removal of the Left-Hand Cover and the Main PCB.
1. The stepper motor driver PCB can be accessed once the main PCB has been removed. Disconnect all four
cables marked (1) in Figure 7-7 below.
2. Locate the four hexagonal screws marked (2).
3. The circuit board can now be removed from the printer chassis for replacement and reassembly.
NOTE: The cable connectors on this PCB are similar in appearance, so be sure to
make a note of the exact cable to be reconnected to each specific connector on the
PCB during reassembly.
Figure 7-7, Replacing the Stepper Motor Driver PCB
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