Service manual

5 • Removal & Replacement
5-22 DM300c/DM400c/DM475 Service Manual (SV61801 Rev. D)
Printer/Base (use for all models)
5.20 Encoder
Sensor,
Encoder Disc
and Sensor
Board
1. Remove all printer/base covers
(sections 5.2 through 5.5 and 5.7).
2. Remove main logic and power
supply PCBs (sections 5.17 and
5.19).
3. Remove sensor assembly (one
screw). See figure, right.
4. Remove encoder disc cover (one
screw, figure, right).
5. Remove encoder disc. It is se-
cured to shaft by one screw that
passes through disk flange.
NOTE: When replacing disc, install
so arrow faces up at 12 o’clock
position.
6. Remove sensor board (two
screws). Use a stubby driver.
7. Reassemble in reverse order.
Figure 5-65 Disc Encoder Components
and Sensor Board
Figure 5-66 Removing Encoder Disc
Cover
Figure 5-67 Removing Encoder Disc
Figure 5-68 Encoder Sensor, Encoder
Disc and Cover
Figure 5-69 3C00, 4C00 5C00 Sensor
Board (Front)
Encoder Sensor Assembly
Encoder Disc Cover
Sensor Board
Disc Cover
Mounting
Screw