Technical Bulletin
No. RTB-012
SUBJECT: 1. Additional steps for scanner wire replacement
2. Troubleshooting for SC21
DATE: 15 Aug. ’91
PAGE: 2 of 2
•
Perform a free run for 1 minute (DIP SW 902-1 on). Make sure that the scanners
and wire operate smoothly.
•
Loosen the 2 screws on the cushion holder. Position the holder so that the cushion
is tightly fit between the holder and the wire hook ([A]: direction) as in figure 3.
•
Go to the service manual P5-15, step 13.
2. Troubleshooting
[Symptom]
After making about 1 million copies, SC21 lights and the machine stops.
[Cause]
The wire extends and a space appears between the cushion and the holder (figure 4).
This causes the pulley and the wire to slip. When this phenomenon occurs, the scanner
can not go back to its home position.
[Action in the field]
•
Remove the rear cover (2 screws).
•
Remove the fusing cooling fan motor [B] as in figure 1 (2 screws, 1 connector).
•
Loosen the 2 screws on the cushion holder and slide it towards the spring.
•
Secure the screws. Make sure the cushion is tightly positioned between the hook
and the cushion holder. (Figure 3)
NOTE:
After making about 2 million copies, SC21 may light on again. If no further
adjustment is possible with the old cushion holder at that time, refer to MB No.
19 and replace with new cushion holder.
[A]
Fig. 3
Fig. 4
