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FAULT
3. Motor not operating:
4. Motor running
slowly:
5. Inadequate paper
feed:
POSSIBLE CAUSE
(a) Conductor strip
has become loose
In top cover.
(b) Motor bevel
pinion touching
motor m o u n t i n g
screws.
(a) Excessive
friction on
encoder disc.
( b ) Excessive gain
on TR5
(a) I n s u f f i c i e n t
spring pressure
on paper pinch
r o l l e r .
(b) Paper reel ends
jammed against
the cover.
REMEDY
(a) Fit new top cover
assembly.
(b) Check tightness of
screws and reset
gear mesh (see
Figure 4).
(a) Slightly slacken
base insert screw
near encoder disc.
(b) Fit ZTX551 in
place of ZTX550.
(a) Fit new 0.60 mm
dia. springs.
(b) Ensure that reel
is wound tightly
and not touching
cover.
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