Fujitsu MB91360 manual Problem Solution, Trouble Shooting

STARTERKIT MB91360

Chapter 7 Appendix

7.9 Trouble Shooting
Problem	Solution
Evaluationboard does not	Check voltage supply and jumpers :
initialize after power-on.	☛ The voltage on DC-Power plug
LED D10 (Power indicator) does	should be in the range of 9-12V. The
not light up and the LC-display	plug should have + on shield and – on
remains empty.	the center. LED D10 should light up
	after switching on the board. Use a
	multimeter to see whether 5V are
	present on the Vcc/Gnd terminals (TP2
	and TP3).
	☛ Check jumper positions according to
	table 1 (Esp. : JP1 – JP7) !
	☛ Remove all user extensions on the
	board to avoid shorts !
Evaluationboard stays in reset.	☛ LED D11 (Reset) should flash. If D11
LED D11 (Reset indicator) ligths	lights up permantantly, the voltage is too
up permanently.	low (below 4.25V) - Increase the voltage
	to solve the problem.
	☛ JP33 (DTR reset) should be left
	open. This option allows to reset the
	board from a connected PC using the
	DTR line (not used by Softune WB).
	☛ Remove all user extensions on the
	board to avoid shorts or leakage
	currents !
After power-on, the initial	☛ Check JP34 (default-mode) : This
monitor-message is not shown	jumper should be in the lower position
on the LCD.	(Monitor mode). In the upper position,
	the board will call the user program in
	Flash-ROM directly and will not show
	the message.
	☛ Maybe the monitor-kernel has been
	destroyed. Try to re-program the kernel
	as desribed in the „flash programming“-
	section.
	☛ Check all jumper positions (table 1).
	☛ Adjust the LCD contrast using
	potentiometer RV1.
The communication from	☛ Make sure your COM-port number
Softune Workbench to the	and the baudrate settings are correct

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