Function of adjustment volumes :
VR1
: Adjustment for HP sensor sensitivity. (Receiver)
VR2
: Adjustment for light amount of Ribbon sensor.
VR3
:Adjustment for detection level of Label sensor.
VR4
:Adjustment for detection level of Ribbon sensor.
VR5
: Adjustment for HP sensor light amount.
VR6
:Adjustment for the contrast of LCD.
VR7
: Off set adjustment of HP sensor receiving level.
1) Adjustment of Ribbon sensor :
1. Remove the ribbon and close print mechanism.
2. Measure check pin TP3 and TPG1(GND) by volt meter. Turn VR2 to counter
clockwise from far right and stop at 0.9V.
3. Turn VR4 to counter clockwise from far right and stop when LED4 turns on.
4. Load ribbon to the printer and measure TP3 and TPG1(GND). Check if
the voltage is above 3.5V.
2) Adjustment of Label sensor :
1. Remove the paper from the sensor.
2. Turn VR3 counter clock wise from far right and stop when LED 3 turns off.
3. Load paper to printer and check if LED3 turns on.
3) Adjustment of LCD contrast :
View the LCD from slightly above
and turn VR6. Stop turning VR6
at the proper position.
Set 1 to 1.5 scale farther
Range of LED
'
on
Final posit
Final posit
Final posit
Final position
ion
ion
ion
LED
'
off
