SATO TG308, Руководство по обслуживанию

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Section 7: Replacement Procedures
TG3 Series Service Manual
Page 7-31
7.19 REPLACING SIDE HOLE SENSOR
Sensors may malfunction due to dirt buildup, but their function may be restored upon cleaning. Replace
sensors only when you are sure they have failed electrically.
1.
Before proceeding, switch off the printer and remove the main cover, left housing cover and the top left
housing cover to gain access to the internal (electrical and mechanism) hardware. Refer to
Section 7.1
Removal of Housing cover
for details.
2.
Unscrew five
screws
to detach the
Main (CONT) PCB bracket
from the printer frame. Refer to
Section
7.6 Replacing Torque Limiter (Ribbon Unwinder)
for details.
3.
Detach the
Cutter unit
.
Unscrew the
shaft
that holds the
cutter unit
in place, removed the
shaft
and set aside. Carefully lift and
pull out the
cutter unit
. Refer to
step 1
of
Section 6.10.1 To adjust Gap/ Center hole sensor
.
4.
Detach the
Operator Panel assembly
based on
step 2
and
step 3
of
Section 7.15 Replacing Operator
Panel PCB
.
To replace Side hole sensor (lower) board
5.
Detach the
Power route assembly
from the
printer frame
based on
step 3
to
step 7
of
Section 7.10
Replacing Stepper Motor
.
6.
Detach the
Media route Frame assembly
from the base cover and the printer frame based on
step 7
and
step 12
of
Section 7.16 Replacing Gap Sensor
.
7.
On the base of the
Media route Frame assembly
, remove four
large screws
(1) to detach the two pieces
of
Frame (Support A)
(2) from the
Media route Frame assembly
.
8.
On the media feed-in area, remove two
screws
(3) to detach the
Paper Guide (B)
(4).
9.
Unscrew to remove the two purple
Guide collar knobs
(5).
10.
From the underneath of the
Media route frame assembly
, remove four
E-ring
(6) and withdraw two
pieces of
Slide shafts
(7).
11.
Remove the
Body B (side hole sensor) ASSY
(8) and
Body A (side hole sensor) ASSY
(9).
12.
From the
Body A (side hole sensor) ASSY
(9), remove two
screws
(10) securing the
Lower Side hole
sensor board
(11). Replace the defective
Lower Side hole sensor board
(11) as necessary.
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