Panasonic VL-SV74BX, Service Manual

Page: 30 / 99

Is the voltage of
CL930(Main Board) about
4V?(12V→4V)
(from previous page)
(To next page)
Check around IC930,
L930,R931,R932,R933,
C930,C932,C933,C934,
C935 and C937
of Main Board.
Is the voltage of
CL920(Main Board) about
3.3V?(12V→3.3V)
Check around IC920,
L920,R921,R922,R923,
C920,C922,C923,C924,
C925 and C927
of Main Board.
Is the voltage of
CL418(Main Board) about
4V?
Check around R940 and
R941 of Main Board.
Is the voltage of
CL950(Main Board) about
3.3V?(5V→3.3V)
Check around IC950,
C951 and C952
of Main Board.
Is the voltage
of CL437(Main Board)
about 1.8Vfor BBIC Core?
(4V→1.8V)
Check around Q401,
R419,C427,C435 and
C438 of Main Board.
Is the voltage
of CL438(Main Board)
about 3.3V for BBIC I/O?
(4V→3.3V)
Check around Q402,
R416,R417,R420,
C418,C433 and C436
of Main Board.
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
Is the unit powered
ON ?
NO
YES
END
Replace the
fault parts.
Is the unit powered
ON ?
NO
YES
END
Replace the
fault parts.
Is the unit powered
ON ?
NO
YES
END
Replace the
fault parts.
Is the unit powered
ON ?
NO
YES
END
Replace the
fault parts.
Is the unit powered
ON ?
NO
YES
END
Replace the
fault parts.
Is the unit powered
ON ?
NO
YES
END
Replace the
fault parts.
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