USER MANUAL |
18
DIAGNOSTIC INFORMATION
The DPP-450 has several built-in diagnostic modes.
LF Button operation Modes
Holding <LF> button while power on
for ~ 0.5 sec (first sound signal)
SHORT SELF TEST print
Holding <LF> button while power on
for ~ 2.5 sec (second sound signal)
start DUMP mode. All input data are
printed hexadecimal and as text
Holding <LF> button while power on
for more than 8.5 sec (fifth 4-tone
sound signal)
Enter firmware updating mode
Holding <ON/OFF> button while
power on for
4 sec (first sound signal)
If serial cable is connected (RS232
communication) – temporary forcing
9600 bps serial speed
If no serial cable connected
(Bluetooth® or USB communication) –
starting a hardware menu for fast
Bluetooth® pairing info reset
Holding <ON/OFF> button while
power on for more than 6 sec
Enter hardware setup mode
Holding <ON/OFF> button while
power off for more than
1 Second
Holding <ON/OFF> button while less
than
1 second backlight is turn on for short
time
Holding <ON/OFF> button and press
<LF> button
Printing WIFI info
