Citizen Systems Compact desk-top dot matrix printer CBM-910 Type II - Manual (Page 16)

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3.2 Part Descriptions
(1) DC jack Insert the output plug of the AC adapter attached.
(2) Power switch When switched ON, power is supplied to the printer and
the Power lamp goes on.
(3) Power lamp Lighted when power is turned ON and goes out when turned
OFF.
Blinks during memory switch setting and at the occurrence
of memory error. While memory switch setting error is
present, the Power lamp blinks at 1/10-second intervals.
While memory error is present, the Power lamp and the
SEL lamp blink simultaneously at 1/10-second intervals. The
memory switch setting error can be recovered by resetting
but memory error is not recoverable.
(4) SEL lamp Printer lights up in Select (ON LINE) state, and is put off in
Deselect (OFF LINE) state. Printing operation is available
only while this lamp is lit.
1) It blinks, for paper-near-end, at 0.5-second intervals.
Supply paper and press the SEL switch to turn off the
lamp.
2) On occurrence of any alarm state (blinking) due to any
reason other than paper-near-end, it starts blinking at
1/4-second intervals. Eliminate the cause and either
press SEL switch or turn the power off and on again to
stop blinking.
(5) LF switch Paper is fed when switch is pressed (deselect condition
only). Used to supply paper or to insert some space in the
output.
(6) SEL switch Printer is selected (ON LINE) by pressing this switch.
Printer is deselected (OFF LINE) by pressing the switch
again.
Also used to release alarm state. In Deselect state, if data
still remain in the input buffer, they are all printed out.
(7) Interface connector Printer is connected to various hosts via cables. Please
ensure that both the printer and the host are turned off
before connecting.
(8) Printer cover Opened to exchange ribbon cassette and paper roll.