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DRIVING MECHANISM - AD -
(1)
This portion of the driving mechanism (Figure AD, Part 1) uses
two pulley belts:·
(1)
timing belt (AD-I5) used between center pulley
(AD-24) and motor pulley (AD-I3), and (2) timing belt (AD-4I) used between
driving pulley (AE-I) and motor pulley (AD-30).
5.2.4.2
A.
5.2.4.3
A.
Rev.
E
Replacement/Removal
MAIN MOTOR
1.
Remove motor ca)acitor (AI-23) located just above mairr
motor (AD-49/50 by removing screw (AI-7) and washer (AI-25)
from right frame (AI-I).
2. Remove motor fan safety guard (AD-4) by removing two screws
(AD-5) and lockwashers (AD-6) from printer base (AH-I).
3. Loosen nut (AD-22) located at back of bracket (AD-I6) using
open end wrench, 5.5 mm (0.22-in.).
from rna in motor pu 11 ey (AD-13).
Remove belt (AD-I5)
4. Remove two main motor holders
~upper)
(AD-49) by removing
screws, washers, and grommets AD-II, 12,
8)
from motor
holder (lower) (AD-49) and printer base. Note, that between
the lower motor holder and motor there is a rubber cushion
(AD-49) .
5. Remove ground wire (AD-45) from motor by removing screw (AD-47)
and washer (AD-46).
6. To remove fan (AD-51), loosen screw (AD-51) on motor shaft.
7. To re-assemble, reverse order of disassembly (Refer para.
5.2.4.3.A. for correct belt tension adjustment).
Adjustments
MAIN MOTOR PULLEY BELT {AD-I5l (REFER TO FIGURE
5-3~
This belt is located between motor pulley (AD-l3) and center
pulley (AD-24) and proper tension is applied as follows:
1. Loosen nut (AD-22), located at back of bracket (AD-I6), with
a
5.5 millimeter (O.22-in.) open-end wrench.
2. Adjust position of tensioner (AD-I7) so that movement of
belt (side away from tensioner) when hand depressed with
a pressure of 500 grams (I7.60z.) travels inward to a
maximum distance of 3-6 mm (0.I-0.2-in.).
(Reference
Figure 5-3)
5-12
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