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Unit 6: Maintenance
S8400 Series Operator Manual
6-5 PN: 9001160B
INTERFACE BOARD REPLACEMENT
Circuit boards generally have long lives due to the lack of moving parts. Generally, if a circuit board becomes
defective, it is contributable to a negative external condition.
If it is determined that the circuit board has become defective, search the printer over for possible visual factors
that may have led to the damage.
1. Switch off the printer and observe appilcable lockout-tagout procedures.
2. Disconnect interface cable (1, Figure 6-3) from defective interface board (2).
3. Remove two screws (3) securing defective interface board (2) to printer (4).
4. Insert replacement interface board (2) into printer (4) and secure using two screws (3).
5. Connect interface cable (1).
Figure 6-3, Interface Board Replacement
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