Diagnostic information, Infinite peripherals, inc – Infinite Peripherals DPP-250 User Manual

Page 12

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Infinite Peripherals, Inc.

www.ipcprint.com

Page 12

DPP-250 User Manual v1.01

Diagnostic Information

The DPP250’s LF switch/button is used for entering various printer
modes. These modes can be used to assist developers in

debugging problems related to programming and communication.
The following explain how to access the various operating modes.

Step #1: Make sure the printer is OFF (On-line LED is OFF) before
performing step #2.

Step #2: Press and hold the line feed button (LF). While pressing

the (LF) button, press the (POWER) button momentarily
and release when one of the conditions bellow:


LF Button Operation Modes

Holding LF button while power on

for ~ 0.5 sec and releasing it

after 1-beep.

SHORT SELF TEST print.

Holding LF button while power on
for ~ 2.5 sec and releasing it after 2-beep.

Hex DUMP mode. All
input data are printed as

hexadecimal.

Holding LF button while power on
for ~ 4.5 sec and releasing it after 3-beep.

LONG SELF TEST print.

Holding LF button while power on

for more than 8.5 sec and releasing it after
the 5-beep 4-tone beep.

Program mode –

loading the printer
firmware.

Holding ON button while power on

for ~ 4 sec and releasing it after 1-beep.

Temporary forcing

9600 bps serial speed.

Holding ON button while power on
for ~ 6 sec.

Hardware Setup Mode.

Table 5

Note: Care must be taken when entering operating modes to prevent the

clearing of factory preset configuration information.

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