Name: Datamax I-Class Mark II
Brand: Datamax
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I-Class Mark II Maintenance Manual

ustments and Maintenance

2.2.4 Printhead Voltage Adjustment

CAUTION

Voltage measurement required; use extreme caution.

The printhead voltage adjustment is required (1) when replacing the power supply or (2) if the factory voltage

setting of the power supply has been changed. No voltage adjustment is required during a routine printhead

replacement. Adjust the Printhead Voltage as follows:

1. Turn OFF and unplug the printer and remove the cover; see Section 4.1.

RP1

Power Supply PCB

2. Using a multi-meter set to measure DC voltage, connect the positive lead to Power Supply Connector J2 -

pin 1 and the negative lead to J2 - pin 6.

3. Raise the Printhead Assembly. Locate and

note the Printhead Resistance.

4. After ensuring that media is loaded, latch the

Printhead Assembly in the down position. Plug

in and turn ON the printer.

5. After READY is displayed, press the FEED

button (this will enable the printhead voltage

for approximately 30 seconds). Adjust the

voltage using RP1 on the Power Supply PCB

according to the printhead resistance listed in

the appropriate table below.

6. Turn OFF and unplug the printer. Remove the

multi-meter and replace the cover.

Printhead

Printhead Resistance

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