Panasonic VL-SV75 Series, Service Manual

Page: 29 / 102

9.2.3.2 Defect of the Power board unit
Defect of the Power board unit
Is the voltage of C1
(Power board) about
24V?
Replace fuse(F1)on Power Board
of the Main Monitor Station.
Is the unit powered
ON ?
Replace the
fault parts.
Replace the
fault parts.
Is the voltage of C3
(Power board) about
24V?
Check around LF1
L1,L2,D1,D2,D3,D4
of Power Board.
Is the voltage of CL7
(Power board) about
12V?
Check around IC1
L3,R1,R2,R3,R4,R9,
C7,C9,C10,C11,
C12,C14,
of Power Board.
Go to Defect of the Main unit power supply
(see next page).
NO
YES
YES
YES
NO
NO
NO
YES
END
Is the unit powered
ON ?
NO
YES
END
Is the unit powered
ON ?
NO
YES
END
Replace the Power board unit.
END
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