About Hardware - LAUNCH TECH X-431 IV User Manual

LAUNCH
X431 SERIES UPDATE TOOLS---- for
writing the program from computer to
CF card when doing X431 update
DISPLAY
displaying the X-431IV diagnostic
information
X-431IV diagnostic programs
SYSTEM DATA---- system data used
by X-431IV system
2) Optional programs that can be selected
according to user's demand:
Diagnostic program for various vehicles
2. Install the X431 SERIES UPDATE TOOLS
into computer.
3. Format the X-431IV CF card.
4. Run the X431 SERIES UPDATE TOOLS
and write the display program, system data
and diagnostic programs onto CF card.

6.2 About Hardware

Question: After X-431IV downloads the
diagnostic program from the CF card it prompts
"Please contact your local dealer". What is the
reason?
Answer: It is because the license No. in CF
card does not match the SMARTBOX. It can be
solved in the following way:
1. Download the software that is corresponding
to the SMARTBOX so that the CF card can
match the SMARTBOX.
2. Use the UPDATE TOOL that is provided on
http: // www.X431.com for update. Never use
WINZIP or other decompressing tool for update.
Question: Why does the LCD screen respond
so slowly?
Answer: It is because the ambient temperature
is close to the lower limit of operating
temperature range (0-50℃). In this situation, it
is necessary to warm up the machine for 20
minutes before test.
Question: Power cannot be turned on with the
PROGRAM---- for
and managing the
44
X-431IV English User's Manual
power button on the main unit after the machine
is connected to vehicle diagnostic socket
through cables and connectors. What can I do?
Answer: Check the power pin of vehicle
diagnostic socket with multimeter for power.
The power pin in diagnostic socket varies from
one vehicle to another. Please refer to the
User's Manual of specific vehicle diagnostic
program to find the power pin. If there is no
power supply from the diagnostic socket,
please get power in other ways, such as from
battery or cigarette lighter.
Question: There is no character on the backlit
screen. What should I do?
Answer: Check if the power is well connected.
Turn off the machine, unplug the power
connector and re-plug it. Turn on the machine
after it has been connected to the power for 1
second.
Question: Why does
communication with ECU?
Answer: Please make sure that the diagnostic
connector and diagnostic program are matching
vehicle make.
Question: The screen keeps blank after
flashing when the machine is turned on. What
should I do?
Answer: Take out the CF card and re-start the
machine to see if there is normal display. If the
display is normal when the CF card is taken out,
the CF card should be replaced. If the screen is
still blank, please contact the local service
engineer.
Question: Why does the system prompt that no
CF card is found when the machine is turned
on?
Answer: The possible cause is that no CF card
is in the machine, or CF card is inserted
improperly or damaged. If it is damaged, it is
necessary to make a new one.
X-431IV fail in