SATO 9001226(A) Service Manual page 152

Section 6: Checks and Adjustment Procedures
6.9 ADJUSTING AND CHECKING SENSORS (Cont'd)
Press the arrow buttons to adjust the sensor level to 0.5V or below and press the FEED button.
3.
/
Re-position the media, with the I-Mark of the media rests over the I-Mark sensor.
4.
Note:
To stabilize the sensor level, make sure the print head assembly is locked and the media is threaded cor-
rectly.
Confirm the new sensor level (I-Mark portion) to see if the difference between high level (I-Mark portion)
5.
and low level (blank media) is 0.9V or more.
Press the / arrow buttons to switch to SLICE LEVEL adjustment screen. Press the
6.
to adjust the slice level. Setting the slice level to 0.0V enables automatic setting. The slice level can be set
within the range of 0.0V to 3.2V . Save changes by pressing the FEED button.
To calibrate the I-Mark sensor level with the potentiometer
NOTE: Measure the sensor level directly in the Maintenance mode only. This is because the sensor
protection (measurement to prolong operating life) is enabled in the ONLINE mode.
These checking activities require the use of a multimeter and may be performed with or without the assistance
of the SATO Test Module .
CONT PCB
Remove the side cover to reveal the Main PCB (CONT board) . Please refer to step 2 and 3 of Section
1.
6.2 Checking the Direct-Current Power Supply .
When using the optional Test Module for checking, connect the optional Test Module to the CHK
2.
connector as shown. Set the digital multimeter to direct-current voltage mode. Connect [+] probe to " SIG "
and [-] probe to " GND " of Test Module . Turn the dial to " 4 ".
If Test Module is not available, connect [+] probe of the multimeter to " CH1B " and [-] probe to " CH1A " of
the CHK connector as specified above.
Disengage the Head lock Lever and the Lid Latch to allow media loading. Physically position the media,
3.
with the blank media (label/tag) rests over the I-Mark sensor.
Note:
To stabilize the sensor level, make sure the print head assembly is locked and the media is threaded cor-
rectly.
Use the microdriver to adjust the IM potentiometer ( VR5 ) until the sensor level shows +0.5V or below on
4.
the multimeter.
Page 6-14
(IM)
VR5
CHK
Connect [ + ] to point 1B
Top view of
CHK
Connector
Connect [ - ] to point 1A
Set Dial to 4
7
Connect [ - ]
6
probe here
Connect [ + ]
probe here
TG3 Series Service Manual
arrow buttons
/
Test
Module
1A
2A
3A
0
4A
8
1
5A
6A
2
1B
3
2B
5
3B
4
4B
5B
GND SIG
6B