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2. When to replace paper
Whenever the printer gives paper out signal or a red line
appears on the thermal paper, it is the proper timing for replacing
the paper. Do not wait till the print engine is dragging the paper
roll at the very end. Remove the leftover and replace a new paper
roll as illustrated above to prevent excessive paper dust in the
printer and consequently possibility for paper jam.
B. CONNECTING CABLES
1. Serial connection
All the external connectors are in the recessed area at the
rear bottom. The serial connector is a 8 pin RJ 45 jack at the left
in the picture above. Apply the RJ45 plug of RS232 cable to this
port for serial application. Please note that when serial connection
is used, there must be no cable connection at the parallel port on
the printer. The default protocol used in serial connection is
19200 bps, none parity, 8 data bits, 1 stop bit. Set in setup
window the switch positions both 1, and 2 to OFF leaving the
rest unchanged as factory default setting.
2. Parallel connection
The parallel connector is a 25 pin D sub Male connector at
almost center in the connector area. Apply the female end of the
parallel cable at this port for parallel application. Please note that
when parallel connection is used, there must be no cable
connection at the serial port on the printer. Please also note that to