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Checking the operation of MSP430 (/PSW and /IGN)
Check that the signal /PSW(IC22 - 10pin) and /PSW_OUT(IC22 - 15pin) are linked
with the power button on KCH-19 in power on state.
Check that the signal /PSW and /PSW_OUT are 0V
during the power button is pressed.
If the ignition function is enabled,
check that the signal /IGN(IC22 - 8pin) and /IGN_OUT(IC22 - 9pin) are linked with the ignition sense.
When the ignition sense has 13.6V(set within the
operating voltage range), check that the signal
/IGN and IGN_OUT are 0V.
Remarks related to MSP430
A. When MSP430(IC22) is replaced, IC22 must be replaced to "MSP430G25KGCA"(This MSP430 is written the program.).
B. OMAP communicates with MSP430 by serial communication at startup of deck.
Only firmware version of MSP430 is confirmed by OMAP in serial communication.
Even when firmware version of MSP430 can not be acquired, the system of MSP430 is started.
C. If there is the difference of firmware version of MSP430 between MSP430 and OMAP,
the firmware version of MSP430 is updated with the serial communication by OMAP.
"WAIT..." is displayed on the LCD during the firmware update. When the firmware update fails,
the system of MSP430 is started and OMAP is trying to update again at next startup.
When /PSW is linked
and /PSW_OUT is not
linked with the power button.
When both /PSW and /PSW_OUT are
not linked with the power button.
When /IGN is 0V and
/IGN_OUT is not 0V.
When both /IGN and
/IGN_OUT are not 0V.
MSP430 is broken.
MSP430 or the circuit of the signal /PSW is broken.
MSP430 is broken.
MSP430 or the circuit of the signal /IGN is broken.
(No.RA054<Rev.001>)1-155
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