Sony UP55MD, Руководство по обслуживанию

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1-14
UP-55MD
E2.3
E3.0
E3.0
E2.3
Pinch roller
Pinch roller assembly
Bearing flange
Bearing flange
Bearing
Bearing
Helical
extension
spring
Helical
extension
spring
1-5-9. Pinch Roller
1. Remove the top cover. (Refer to Section 1-3-1.)
2. Remove the front panel assembly.
(Refer to Section 1-3-2.)
3. Remove the MA-142 board. (Refer to Section 1-4-1.)
4. Remove the mechanical main unit assembly.
(Refer to Section 1-5-2.)
5. Remove the MEC-24 board. (Refer to Section 1-4-2.)
6. Remove the stepping motor. (Refer to Section 1-5-3.)
7. Remove the ribbon drive assembly.
(Refer to Section 1-5-4.)
8. Remove the center stay assembly.
(Refer to Section 1-5-5.)
9. Remove the paper feed guide assembly.
(Refer to Section 1-5-6.)
10. Remove the two retaining rings (E3.0) and two helical
extension springs, then remove the pinch roller
assembly.
11. Remove the two retaining rings (E2.3), two bearing
flanges and two bearings, then remove the pinch roller.
12. Attach the pinch roller in the reverse order of steps 10
and 11.
13. Clean the pinch roller with alcohol.
14. Assemble this unit in the reverse order of steps 1 to 9.
10. Attach the thermal head in the reverse order of steps 1
to 9.
n
.
Check that the eccentric pin is inserted in the hole of
thermal head.
(If not, the eccentric pin floats.)
.
Insert the projection of ribbon guide (T) into the
groove of eccentric pin, and then position the ribbon
guide (T) using the dowel and secure it with the two
screws.
PSW
2.6
x
12
Thermal head
Heat sink
Ribbon guide (T)
Ribbon guide (T)
Dowels
Eccentric pins
Eccentric
pin
Groove Groove
Projection Projection
Eccentric
pin
Hole
Hole
Default position
of eccentric pin
Front side