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3-14. Pinch Arm Block Assembly
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Be sure careful not to touch it with bare hands or using dirty gloves when replacing the pinch arm block
assembly. Wipe it using soft cloth moistened with ethanol of 76.9 to 81.4 v/v% in concentration when the
platen roller became dirty.
1. Remove the cabinet. (Refer to Section 1-5.)
2. Remove the MD general assembly (DC). (Refer to Section 3-2.)
3. Remove the thermal head. (Refer to Section 3-9.)
4. Remove the motor block assembly. (Refer to steps 4 to 6 in Section 3-10.)
5. Remove the timing belts. (Refer to Section 3-13.)
6. Remove the retaining ring (W2.3), then remove the idler pulley.
7. Remove the three helical extension springs.
8. Remove the four bearings, then remove the lock arm assembly and pinch arm block assembly in the
direction of the arrow.
9. Remove the pinch arm block assembly from the lock arm assembly.
Helical extension spring
Bearings
Idler pulley
11. To install, reverse the removal procedure.
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When replacing the lock arm assembly, it is required to apply grease.
. Grease: 7-640-005-36 (SANKOL FG87HSR)
. Grease applying portion
3-34 (E)
Pinch arm block assembly
Lock arm
assembly
W2.3
Apply grease
Lock arm assembly
Helical extension springs
Bearings
UP-D898DC
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