PN 9001024
Rev. B Jan. 2000
Page 2-21
SATO CL608 & CL612 SERVICE MANUAL
SECTION 2 – Configuration
Sensor Threshold Level (Continued)
"Eye-Mark" (Reflective) Sensor: When setting the "Eye-Mark" threshold, the
voltage must be measured with nothing but the label over the sensor and then again
with the printed "Eye-Mark" over the sensor. The formula for this is:
(High Voltage Level + Low Voltage Level) x 0.5 = Input Value
To access this setting, perform the following steps:
STEP PROCEDURE
1. Insert a label into the sensor and close the Label Hold-Down. Make
sure the printed Eye is not over the sensor. Record the voltage
shown on the top line of the LCD panel. This line should have the
message Eye on the top line (DIP switch DSW2-2 =ON).
2. Now pull the label forward until the Eye-mark" is positioned over the
sensor (the voltage reading should be at its highest point). Record the
voltage shown on the top line of the LCD panel. The voltage ranges
measured should be within the following ranges:
If the measured values are outside this range, you may have trouble
finding a value that will work properly under all conditions. If this is
the case, a higher quality label may be needed to get adequate
performance or adjust VR1. See Section 4-8.
3. Calculate the input point voltage using the formula.
4. Use the LINE key to step the counter to the desired setting. The display
will increment one step for each time the LINE key is pressed. If the
LINE key is held down for more than two seconds, it will automatically
go into the fast scroll mode. The reading will advance to a setting of 4.9
(the maximum voltage) after which it will automatically wrap and start
at 0.0 again. If a value of 0.0 is set, the printer will automatically
set the level each time the printer is powered on with labels loaded or
the head is closed.
5. Repeat this procedure using values slightly higher or lower until the
optimum performance is obtained. If you cannot find a setting that will
give you adequate performance, then the label stock or printed "Eye-
Mark" too much variation in its reflectance and a better quality stock
should be used.
6. Once the setting is correct, press the FEED key to accept the setting.
Label Only Eye Mark
1.0V or less 2.5V to 3.5V
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