Sanyo ECR-238 - Page 35

[PHENOMENON [ CONDITION | CAUSE | LEVEL | CHECK POINT AND METHOD | REPAIR METHOD |]
6. Intermittently (4) The print wheel @ See CAUSE (3) of PHENOMENON 5.
missing guide is improp
characters erly mounted or
has broken/bent
teeth
7. The wrong The printed (1) Malfunction of @ See CAUSE (1) of PHENOMENON 6.
characters characters are the print
are printed. not what you mechanism
expected. (2) Chipped ratchet @ Check if the teeth on the
teeth on the pertinent typewheel are
printing wheel chipped.
(3) The motor @ See CAUSE (2) of PHENOMENON 6.
speed is too
fast
(4) Faulty input @ See CAUSE (4) of PHENOMENON 5.
trigger pulses
(5) Improperly @ See CAUSE (3) of PHENOMENON 4.
mounted char-
acter selective
magnet unit
@ If chipped, replace the ty-
pewheel ass’y.
Improperly @ See CAUSE (2) of PHENOMENON 3.
mounted timing
detector ass‘y
The printing @ See CAUSE (3) of PHENOMENON 5.
wheel guide is
improperly
mounted or has
broken/bent
teeth
Improperly as-
sembied gear
train on the
frame T side.
@ If not, re-assemble it cor-
rectly (see subsection
3.2.2,|Main Assembly C).
@ Replace any gear with
chipped teeth or damage.
@ Check if the gear train is
properly mounted.
8. No paper
feeding.
All printing is (1) Chipped teeth
done at one line or damage to
without the pa- the paper feed-
per being fed ing drive gear,
paper feeding
second trans-
mission gear,
and/or paper
feeding gear
Faulty supply of
paper to the
printer
@ Check if each gear has
chipped teeth or is
damaged.
Check for obstructions
(dirt or other foreign par-
ticles) in the paper feed
path.
@ Remove any dirt and for-
eign particles.
If so, replace it with a
new spring.
Check if the paper in use
is of the rated width,
thickness, and diameter.
Use only the specified
type of paper.
Stretched or
damaged paper
feeding shaft
Check if the paper hold-
ing spring is stretched or
damaged.
—35-