Precautions On Troubleshooting - Brother PT-2500PC Service Manual

4.1 PRECAUTIONS ON TROUBLESHOOTING

(1) Before testing electric conductivity with a circuit tester, unplug the AC line adapter
and check that power is not supplied to the machine.
(2) If a printing problem occurs, unplug the thermal head flat cable and check the
thermal head and related circuits. Until they come to operate normally, do not plug
the thermal head flat cable.
(3) To supply power to the machine, use the dedicated AC line adapter. If you need to
use a regulated DC power supply, its specifications should be 11 to 13 VDC variable
with minimum 5A supply.
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