Platen Roller - Sony UP-897MD Service Manual

1-4-6. Pinch Arm Assembly
When replacing the pinch arm subassembly, be extremely
careful not to touch it with bare hands or dirty gloves. If
the pinch arm subassembly is contaminated, clean it with
the ethyl alcohol.
1. Remove the top cover. (Refer to Section 1-3-1.)
Remove the front panel assembly.
(Refer to Section 1-3-2.)
3. Remove the mechanical deck assembly.
(Refer to Section 1-4-2.)
4. Remove the thermal head. (Refer to Section 1-4-3.)
5. Remove the paper holder assembly.
(Refer to step 4 of Section 1-4-7.)
6. Remove the three helical extension springs.
7. Remove the four bearings, then remove the door lock
assembly and pinch arm assembly in the direction of
the arrow.
8, Remove the pinch arm assembly from the door lock
assembly.
Pinch arm assembly
Door lock i }
assembly Be
Helical
4 extension
¢ asa Helical
e \ .. extension
Helical 5 !
=o |
spring
Bearings
9. Attach the pinch arm assembly in the reverse order of
steps 1 to 8.
After attaching the pinch arm assembly, clean it with
alcohol.
UP-897MD
1-4-7. Platen Roller
When replacing the platen roller, be extremely careful not
to touch it with bare hands or dirty gloves. If the roller is
contaminated, clean it with the ethyl alcohol.
1. Remove the top cover. (Refer to Section 1-3-1.)
Remove the front panel assembly.
(Refer to Section 1-3-2.)
3. Remove the mechanical deck assembly.
(Refer to Section 1-4-2.)
4. Remove the two screws, then remove the paper holder
assembly.
5. Remove the helical extension spring from the tension
arm assembly.
Paper holder assembly
e7
Helical
extension
Tension arm
assembly