Sony DNW-A100 Maintenance Manual page 222

5-7. Pinch Roller Replacement
Removal
1. Remove the Pinch Arm Assembly
(1) Remove the stop washer at the top of the
pinch arm.
n
If a poly-slider washer 1 is inserted between
the pinch arm assembly and the stop washer,
be carefull not to lose the poly-slider washer.
This poly-slider washer is used for vertical
play adjustment.
(2) Remove the pinch arm assembly from the
threading ring.
n
Do not remove the poly-slider washer 2 and
spring at the bottom of the pinch arm
assembly from the shaft.
Installation
2. Attach the Pinch Arm Assembly
(1) Pass a new pinch arm assembly through the
shaft while hooking the spring as shown in
the figure.
m
. Insert the short-end spring into the groove
of the threading ring and hook the long-end
spring to the side surface (drum side) of the
pinch arm assembly.
. If the poly-slider washer 1 was removed
at the step 1, pass the same poly-slider
washer through the shaft again.
(2) Fasten the pinch arm assembly by new stop
washer.
Stop washer (2.3) : 3-669-596-00
(3) Push the pinch arm assembly manually in the
direction of the drum, then release. At that
time, confirm that the pinch arm assembly
smoothly returns to the former position.
5-38
Stop washer
1
Poly-slider washer
2
Poly-slider washer
Groove
Spring
Remove/Attach the Pinch Arm Assembly
Pinch arm assembly
Threading ring
DNW-A100/A50/A45
DNW-A100P/A50P/A45P