6. Remove four screws and then remove
the ISU.
*: The ISU's are different depending on
30ppm model/35ppm model and 45ppm
model/55ppm model.
[45ppm/55ppm]
Screw
Screw
[30ppm/35ppm]
Screw
Screw
Figure 1-5-39
1-5-23
2LK/2LN/2LM/2LC
ISU
ISU
Screw
Screw
Screw
Screw