SATO LC400e Series Operator's Manual page 63

Section 4: Cleaning and Maintenance
4.3 REPLACEMENT PROCEDURES (Cont'd)
4.3.2 Replacing the Interface Board
Circuit boards generally have long lives due to the lack of moving parts. Generally, if a circuit board becomes
defective, it is due 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 disconnect power supply cord.
2. Disconnect interface cable (1, Figure 4-2) from the 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).
2
1
3
4
Figure 4-2, Replacing the Interface Board
LC400e Series Operator Manual Page 4-5