Media Sensor Voltages - Printronix T3204 Maintenance Manual

10. Adjust R1 on the switch regulator assembly (power supply) until the
voltmeter reading matches the printhead resistance ranges in Table 4–1.
11. Re-install printer cover (see page 7–4).

Media Sensor Voltages

1. Turn off the printer and remove the AC power cord.
2. Connect the printer to your host computer via the communication port.
3. Remove the printer cover (see page 7–3).
4. Attach the AC power cord to the printer and turn on the AC power
switch.
5. Using the Secondary Operator's Panel, enable the printer transmissive
gap sensor.
NOTE: The method used to select the gap sensor will vary depending upon
6. Install a 4.5 inch ribbon, if equipped for thermal transfer.
7. Install a roll of media into printer.
8. Peel off one label and insert the media backing into the media sensor.
9. Place the black (–) voltmeter probe on ground or clamp to the frame.
10. Place the red (+) voltmeter probe on TP10 on the Printer Controller
PCBA.
11. Adjust R3 on the Printer Controller PCBA until the voltmeter reads 0.225
VDC (range 0.180 – 0.300 VDC).
Maintenance and Adjustments
Table 4–1. Printhead Voltage Settings
Printhead Resistance
628 – 700Ω
701 – 730Ω
731 – 770Ω
771 – 810Ω
811 – 850Ω
the printer emulation. For specific instructions, see the Setup Guide
corresponding to the emulation installed.
Voltage Setting
20.7 Volts
21.2 Volts
21.7 Volts
22.2 Volts
22.7 Volts
4–9