JVC HR-P55A, HR-P55A/S, HR-P56A Schematics
BLOCK & CIRCUIT DIAGRAMS
1. POWER(SMPS) BLOCK DIAGRAM
BD101
LINE FILTER
BLOCK
!
(C101, L102, C102)
F101
!
R101
T101
!
TRANSFORMER
SNUBBER
+
C103
BLOCK
(D102, R104,
C105, C106)
6
4
7
RECTIFIER &
SMOOTHING
(D108, C120,
8
L104, C121)
RECTIFIER &
SMOOTHING
(D105, C115, R112, J151)
12 REG BLOCK
(Q152, ZD152, C155,
C152, R152)
D152
Hi-Fi
OPTION
TO SYS
12VA(Cap)
TO SYS
11
D151
13VA(DRUM)
TO Hi-Fi BUFFER
DRIVE & S/W
BLOCK
(IC101, C109, D103, R103, C129,
R109, R125, R126, C135, BC101)
10
RECTIFIER &
J152
(MONO OPTION)
SMOOTHING
(C116, D106,
11
3
L103, C117)
5V S/W
13VA
TO AVCP, OSD
5.1V
BLOCK
(Q155, R156, R157)
2
BK
(BR)
!
PW101
WH
(BL)
HOT GND
!
C112C113
!
HOT CIRCUIT
NOTES : Symbol denotes AC ground.
Symbol denotes DC chassis ground.
4
3
IC102
NOTES) W arning
NOTES) Parts that are shaded are critical
NOTES) With respect to risk of fire or
NOTES) electricial shock.
!
2
3-16 3-17
1
FEED-BACK
(R116, R117, R118,
R119, R120, R121,
IC103
BLOCK
C114)
5V S/W
BLOCK
(Q157, R170, R171)
PWR CTL
BLOCK
(Q156, R161)
TO SENSOR MOD
5.1V
FROM SYS
P.CTL "H"
TO SYS, MOD
5.3VA
2. Power(SMPS) Circuit Diagram
Power dead.
BD101,R101 are
defective.
12VA Power dead.
D109 is defective.
5.4VA Power dead.
D106 is defective.
(TO SYSTEM)
NOTE :
1. Shaded( ) parts are critical for safety. Replace only
with specified part number.
2. Voltages are DC-measured with a digital voltmeter
during TUNER mode.
Power dead.
F101 is defective.
NOTES) Symbol denotes AC ground.
NOTES) Symbol denotes DC chassis ground.
Switching dead.
IC101 is defective.
NOTES) W arning
NOTES) Parts that are shaded are critical
NOTES) With respect to risk of fire or
NOTES) electricial shock.
Switching error
IC102, IC103 are
defective.
36VA Power dead.
D105 is defective.
3-18 3-19
3. MODULATOR/JACK CIRCUIT DIAGRAM
3-20 3-21
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