Datamax M-Class Mark II Maintenance Manual page 40

6. Wait briefly. After READY is displayed, press FEED (to temporarily enable the voltage).
Adjust the voltage using RP1 on the Power Supply PCB according to the resistance range
listed in the appropriate table below.
Over-voltage can permanently damage or shorten printhead service life.
WARNING
Model
M-4206
M-4210
M-4306
7. Turn OFF and unplug the printer. Remove the multi-meter probes and reinstall the
covers.
Adjustments and Maintenance
Printhead Voltage Adjustment
Printhead Resistance
(Ohms)
800
680 – 710
711 – 740
741 – 770
771 – 800
801 – 830
831 – 860
861 – 890
891 – 920
953 – 994
995 – 1036
1037 – 1078
1079 – 1121
1122 – 1163
1164 – 1205
1206 – 1247
1248 – 1289
2-30
Applied Voltage
(+/- 0.1 VDC)
24.0
22.4
22.9
23.4
23.8
24.2
24.7
25.1
25.5
22.4
22.9
23.4
23.8
24.2
24.7
25.1
25.5