Troubleshooting
No lights on the control panel
Check the power supply cable connections and the power outlet.
ERROR LED on (not flashing) with no printing
If PAPER OUT is on, the roll paper is not installed or is near the end.
If PAPER OUT is off, the printer cover is not closed properly.
ERROR LED flashing with no printing (and no paper jam)
Printing stops if the head overheats and resumes automatically when it cools.If
overheating is not the cause, turn the printer off, and after 10 seconds, back on.
DIP Switch Tables
DIP switch 1 (Serial Interface)
SW
Function
1-1
Data receive error
1-2
Receive buffer
capacity
1-3
Handshaking
1-4
Data word length
1-5
Parity check
1-6
Parity selection
1-7
Transmission speed (See table A.)
1-8
Table A
Transmission speed (bps)-bits per second
Adjustable by control commands*
4800
9600
19200
* Only when DIP Switches 1-7 and 1-8 are on, the
transmission speed can be selected from one of seven
speeds: 2400, 4800, 9600, 19200, 38400, 57600, and
115200 bps by conrol commands. The default is 38400.
DIP switch 1 (Parallel/USB Interface)
SW
Function
1-1
Auto line feed
1-2
Receive buffer
capacity
*1
1-3
Select paper sensors
to output paper-end
signals (default value
of a command) from
parallel I/F.
*1
1-4
Error signal output
from parallel I/F
1-5~
1-7
*2
1-8
Power saving
function for USB
*1: For USB I/F, DIP Switches 1-3 and 1-4 are Undefined.
*2: For Parallel I/F, DIP Switch 1-8 is Undefined.
ON
OFF
Ignored
Prints "?"
45 bytes
4K bytes
XON/XOFF
DTR/DSR
7 bits
8 bits
Enabled
Disabled
Even
Odd
1-7
ON
OFF
ON
OFF
ON
OFF
Always
Always
enabled
disabled
45 bytes
4KB
Disabled
Roll Paper end
sensor enabled,
Roll Paper near-
end sensor
enabled
Disabled
Enabled
Undefined
Disabled
Enabled
DIP switch 2 (Serial/Parallel/USB Interface)
SW
Function
2-1
Handshaking
(BUSY condition)
2-2
Do not change
settings
2-3
Print density/
2-4
Liner-free label
2-5
Release condition
of receive buffer
BUSY (If receive
buffer capacity
set to 4 KB.)
1-8
ON
2-6
Do not change
settings.
ON
OFF
DIP switch 2-7, 2-8 (Serial Interface)
OFF
SW
Function
2-7
I/F pin 6 reset
2-8
I/F pin 25 reset
DIP switch 2-7, 2-8 (Parallel/USB Interface)
SW
Function
2-7
Do not change
2-8
Do not change
Table B
Paper
Recommended liner-
free label
Thermal roll paper
7
ON
OFF
Receive buffer
Offline or
full
Receive buffer
full
Fixed to OFF
See Table B
Releases BUSY
Releases BUSY
when remaining
when remaining
receive buffer
receive buffer
capacity
capacity
reaches
reaches
138 bytes.
256 bytes.
Fixed to OFF
ON
OFF
Enabled
Disabled
Enabled
Disabled
ON
OFF
Fixed to OFF
Fixed to ON
Print density
2-3
Fixed
ON
Normal
OFF
Medium
ON
Dark
OFF
2-4
ON
OFF
OFF
ON
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