SATO TG308, Руководство по обслуживанию

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Section 6: Checks and Adjustment Procedures
TG3 Series Service Manual
Page 6-17
6.9 ADJUSTING AND CHECKING SENSORS (Cont’d)
1.
Remove the side cover to reveal the
Main PCB (CONT board)
. Please refer to
step 2
and
3
of
Section
6.2 Checking the Direct-Current Power Supply
.
2.
When using the optional Test Module for checking,
connect the optional
Test Module
to the
CHK
connector as shown below. Set the digital multimeter to direct-current voltage mode. Connect
[+]
probe to
“SIG”
and
[-]
probe to
“GND”
of
Test Module
. Turn the dial to
“5”
.
If Test Module is not available,
connect
[+]
probe of the multimeter to “
CH2B
” and
[-]
probe to “
CH1A
” of
the
CHK
connector as specified above.
3.
Disengage the
Head lock Lever
and the
Lid Latch
to allow media loading. Physically position the media,
with the label gap or tag hole rests over the Gap/ Center hole sensor.
Note:
• To stabilize the sensor level, make sure the print head assembly is locked and the media is threaded
correctly.
• Avoid I-Mark when positioning the label gap on sensor.
4.
Use the microdriver to adjust the
GAP
potentiometer (
VR6
) until the sensor level shows
0.5V
or below on
the multimeter.
5.
Re-position the media, with the label or the tag is oriented over the sensor directly.
6.
Check the sensor level and make sure the difference between the high levels (Label/tag portion) and the
low (label gap or liner / tag hole portion) is
+1.0V
or more. If the level difference is less than + 1.0V, retry
step 3 and 4
, and adjust
VR6
to set the level difference to a maximum value.
7.
Press the /
arrow
buttons to switch to SLICE LEVEL adjustment screen. Press the
/ arrow
buttons
to adjust the slice level.
Setting the slice level to
0.0V
enables automatic setting. Set slice level to the result of (High Voltage Level
+ Low Voltage Level) / 2. Individual results may vary.
The slice level can be set within the range of
0.0V
to
3.2V
. Save changes by pressing the
FEED
button.
8.
If having difficulties adjusting the sensor level properly, clean the sensor portion and check the connector
connection. If the problem persists, replace the sensor.
Table of normal performance values:
Low level (label gap or liner / tag hole portion): +0.5V or below
High level (print area) - Low level (Gap/ hole area): +1.0V or above
Connect [ - ]
probe here
0
1
2
3
4
5
6
7
8
GND SIG
5B
4B
3B
2B
1B
6B
5A
4A
3A
2A
1A
6A
Connect [ + ]
probe here
Set Dial to 5
Test
Module
CONT PCB
VR6
CHK
(GAP)
Top view of
CHK
Connector
Connect [ + ] to point 2B
Connect [ - ] to point 1A