Service manual

Page 4-4
Section 4. Electric Checks and Adjustments
PN 9001080
Rev. A
SATO M-8485Se Standard Print Engine
Service Manual
4.3 See Thru Label Pitch Sensor Adjustment
STEP PROCEDURE
1. Loosen (2) screws holding the service board access cover to the rear of the
cabinet. Slide off the cover for access to the service board.
2. Connect the printer AC power cord to a grounded AC outlet. Place the power
switch in the OFF position.
3. Go to the Gap Input screen on display panel.
4. LOW LEVEL (BACKING PAPER) ADJUSTMENT (GAP)
Position the label gap or a strip of backing sheet in the sensor's field of view.
Adjust VR2 on the Service PCB to 0.3 - 0.5V. Fig. 4-4
NOTE: Sensor is adjustable and can be moved for holes and notches.
5. HIGH LEVEL (LABEL) ADJUSTMENT
Position a label in the sensor's field of view. Check that the difference between
the high and low level is 1V or higher. If the voltage reading is less than 1V
repeat step 4. (Ref. HIGH LEVEL (Label) - LOW LEVEL (GAP)>-1V)
Level difference should be set as maximum.
6. After performing tests, replace the access cover.
Required Equipment:  DC Voltmeter
 Small Phillips screwdriver
(for potentiometer adjustments)
IMPORTANT! Use pressure sensitive label stock that is rated for use with
thermal transfer printers using see thru (transmissive) sensing.
To adjust the See Thru Label Pitch Sensor voltage, perform the following steps:
ADJUST VR2 ON
SERVICE BOARD
ADJUST VR4
ON MAIN PCB
TO MIDPOINT
IF NECESSARY
4-4
Fig.