Appendix C : Trouble Shooting - Fujitsu Cremson Series User Manual

5.3. Appendix C : Trouble shooting

Problem
Evaluationboard does not
initialize after power-on.
LEDs (Power indicator) does not
light up.
Evaluationboard stays in reset.
Reset indicator LED ligths up
permanently.
The communication from the PC
to the evaluation board fails
(Communication errors)
Solution
Check voltage supply and jumpers :
* The voltage on DC-Power plug
should be in the range of 9-12V (@1A).
The plug should have + on shield and –
on the center. LEDs D4,7,10,13,16 (on
F361-CPU-board) should light up after
switching on the board. Use a
multimeter to see whether 5V are
present on the Vcc/Gnd terminals.
* Check jumper positions according to
board manual !
* Remove all user extensions on the
board to avoid shorts !
* The Reset-LED should flash once. If
this LED lights up permantantly, the
voltage is too low (below 4.25V) -
Increase the voltage and power limit
settings of your power supply to solve
the problem.
* Remove all user extensions on the
board to avoid shorts or leakage
currents !
* Make sure your COM-port number
and the baudrate settings are correct.
* Check if the UART-jumpers (JP21,22
on F361-board) are closed.
* Make sure no other programs are
using the same COM-port on your PC.
Close all other applications (e.g. Flash
programmer utilities, terminals etc.)
* Use the provided RS232-cable (1:1
extension type) to connect from your PC
to the „UART0" connector.
* If you are using a PC without a fast
UART (16550 type), you have to switch
to a lower baudrate (e.g. 38400 Baud)
and re-program.
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