(No.RA075<Rev.001>)1-59
*1
If 12M,18M or 33M has still abnormal voltage after the implementation of each procedure above,
54M(IC8),12M(IC24),18M(IC11), 33M(IC5) or one of these peripheral circuit is broken.
54M (normally 5.4V at L12) has an abnormal voltage, check the MSP430G25XXXX (IC2) according to the following procedure.
When VIN of 54M
is 13.4V.
When the voltage of
Checking the operation of the IC2
Check that the voltage of VN of 54M
(IC8-2pin) is operating voltage range.
Standard Voltage/Operating Voltage range
13.4V/13.4V±15%
Check that the signal BAT_CNT
of IC2-7pin output High (3.1V).
BAT_CNT is High.
Check that the voltage of DVCC of IC2-1pin is 3.1V.
When the voltage of
DVCC of IC2 is 3.1V.
Check that the analog voltage
of /BINT (IC2-5pin) is normal. (typically 2.6V.
Operating voltage range is 1.6V 3.0V).
When VIN of 54M
is 0V.
Check the voltage (operating voltage range) at both ends of
F1 (fuse). If F1 is broken, replace the F1 with a new one.
If F1 is not broken, 54M (IC8) or its peripheral circuit is broken.
Set the supply voltage within the operating
voltage range. If set correctly, 54M (IC8) or its
peripheral circuit is broken.
54M (IC8) or its peripheral circuit is broken.
When VIN of 54M is
out of operating
voltage range.
When the voltage of
BAT_CNT is not High.
IC2, 31BU, 50BU or one of these peripheral circuit
is broken.
IC2 is broken.
Set the supply voltage within the operating
voltage range. If set correctly, IC2 or its
peripheral circuit is broken.
When the voltage DVCC
of IC2 is 3.1V.
Pass
When the voltage out-of-
range condition is confirmed.
Checking the operation of the IC2 (/RST)
When the signal /RST (IC2-14pin) has an
abnormal output, check that the analog voltage of
/RST (IC2-6pin) is normal. (typically 2.7V.
Minimum detection voltage is 2.0V.).
When the voltage
of /RST(IC2-6pin) is normal.
IC2, 54M (IC8) or its peripheral circuit of is broken.
IC2 or its peripheral circuit of is broken.
Pass
*2
IC2 is broken.
When the voltage
of /RST (IC2-6pin) is below
2.0V.
Checking the operation of the IC2 (/BINT)
When the signal/BINT (IC2-13pin) has an
abnormal outputs, check that the signal /RST (IC2
-14pin) has correct output.
IC2 or its peripheral circuit is broken.
Fail
Checking the operation of the IC2 (/OVRB_OUT)
When the signal/OVRB_OUT has an abnormal
outputs, check that the /OVRB (IC2-2pin) is
High (3.1V) in the deck powered on.
Pass
IC2 is broken.
