Maxim M190G, Техническое руководство

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Handling, Maintenance, and Repair 2-13
9. Paper does not
feed by fast
paper feeding.
1-pitch paper
feed functions
properly but 3-
pitch paper feed
does not func-
tion. (1) Improper paper
feeding
A
●
Refer to Phenome-
non (7) and Cause
(1).
●
Use the specified pa-
per and remove ex-
cessive paper loaded
in the feed track.
(2) Improper trigger
coil continuity
B
●
Connect the tester to
the both ends of the
trigger coil and
chech continuity.
Resistance:
approx. 20-ohm (at
25°C)
●
If soldered improper-
ly, re-solder.
●
If resistance at the
trigger coil is abnor-
mal, replace the
triger coil.
(3) Paper feeding cam
is worn.
B
●
Remove the paper
feeding cam and
check if the cam
groove (colored part)
is worn.
●
Replace the paper
feeding cam.
10.The paper free
function can-
not be set.
Prints normally
but does not set
for the paper
free. Lever, release is worn
or damaged. B
●
Check if the Lever,
release is worn or
damaged.
●
Replace the Lever,
release.
11.The inking
mechanism
does not func-
tion.
The print mecha-
nism functions
normally but the
inking mecha-
nism does not
function at all. (1) Bad ribbon cas-
sette.
A
●
Check if the ribbon
in the ribbon cassette
rotates normally.
●
Replace the ribbon
cassette.
(2) The ribbon drive
gear is worn or
damaged.
B
●
Check if the outer
teeth of the ribbon
drive gear are worn
or damaged.
●
Replace the ribbon
drive gear.
(3) Spool gear spring is
worn.
B
●
Check if the spool
gear spring is worn.
●
Replace the spool
gear spring.
Level Cause Condition Phenomenon
Check point and
method
Repair method
Model M190G Technical Manual
Table 2.2 Repairing guide