Sony HCD-LV80 / LBT-LV80 Service Manual ▷ View online
HCD-LV80
25
25
F-RELAY
L-CH IN
EVER +5V
STK-POWER
11
6 3
4
VOLUME
CONTROL
18
POWER AMP & VOLUME CONTROL
IC801
VOLUME
CONTROL
D802, 852
THERMAL
SENSOR
Q831-832
PROTECT
DC AMP
Q433-434
L-CH THERMAL
PROTECT SWITCH
Q801
LATCH
DRIVER
Q432
MUTE
CONTROL
Q834
MUTE
SWITCH
Q803
HEAD PHONE
MUTE
Q833
MUTE
DRIVE
Q804
HP-MUTE
PROTECT
09
D804
J803
TM401
PHONES
L
R
FRONT
RELAY
DRIVER
Q401-402
PROTECT
SWITCH
Q439
R-CH
RY401
LATCH
DRIVER
Q437
PROTECT
SWITCH
Q431
SWITCH
Q908
–35V REG
Q903
RECT
D831
D831
VF (–35V)
+VH
VF
VF
RECT
D833-836
+UNREG. 12V
UN +10V
UN –10V
RECT
D841-844
AC-L
AC-L
RECT
D832
D832
POWER
TRANSFORMER
T951
VOLTAGE
SELECTOR
VS901
AC
IN
MAIN (1/2)
SECTION
G
(Page 22)
MAIN (2/2)
SECTION
I
(Page 23)
HP.SW
DISPLAY
SECTION
K
(Page 26)
MAIN (1/2)
SECTION
Q
(Page 22)
MAIN (2/2)
SECTION
H
(Page 23)
JW971
240V
230V
120V
F951
MAIN (1/2)
SECTION
E
(Page 22)
MAIN (2/2)
SECTION
L
(Page 23)
• SIGNAL PATH
: FM
: FM
• R CH : Same as L ch
MUTE
SW
Q805
FAN DET
FAN DETECTOR
D405
DBFB
R-ch
TH831
MIC 2
MIC 1
MIC LEVEL
RV750
MIC AMP
IC850 (1/2)
8
2
LPF 1 OUT
LPF 2 OUT
ECHO CONTROL
IC851
9
1
LPF 1 IN
LPF 2 IN
10
OP 2 OUT
11 OP 2 IN
ECHO LEVEL
RV751
MIC AMP
IC850 (2/2)
MIC-SIG
MIC-SIG
J801
J802
– POWER SECTION –
HCD-LV80
26
26
6
4
3
5
79
78
73
22
70
X601
12.5MHz
72
13
12
11
14
16
17
19
20
21
18
17
16
43
28
27
LINE NF
REC LEVEL
OUTPUT
DISPLAY CONTROL (FOR MIC)
IC603
REC LEVEL
F06
F05
F04
F02
F01
RESET
DATA
CLOCK
WAKE UP
MIC–SIG
SPEANA
09
MAIN (1/2) SECTION
MAIN (2/2) SECTION
POWER SECTION
MAIN (1/2) SECTION
LINE IN
REC IN
REC NF
BPF 4
ALL BAND
BPF 3
BPF 2
I
2
C DATA
RESET
I
2
C CLK
WAKE UP
X IN
DISPLAY CONTROL
IC601
X OUT
BPF 1
BPF 0
45
67
SEG-1
FLUORESCENT INDICATOR TUBE
FL601
23
29
VF
40, 42
GR-3
14, 2
DRIVER
74
75
77
9
10
3
4
5
14
15
13
LED DRIVER
KEY MATRIX
VOLUME
D601 – D603
7
80
Q601 – Q603
Q605 – Q607
Q608 – Q610
D604 – D607, D611, D612, D615 – D621,
D623 – D627, D635 – D638
D623 – D627, D635 – D638
D700
D631, D632, D641
11
15
LED POWER
SWITCH
1
REMOTE
CONTROL
RECIEVE
IC702
S701
2
8
.
AMS >
S701
JOG
S691
Z
OPEN
SIRCS
JOG A
JOG B
VOLUME A
VOLUME B
KEY 0
KEY 4
LED SCK
LED LATCH
LED DAT
DAILY LED
REC LED
LED-EC0
GR-1
GR-15
GR-16
LED SEL
D-SW
1
3
5
7
11
20
22
•
•
•
P3
P5
P7
P9
P16
•
•
•
17
19
P1
P2
CLK
STB
DATA
SERIAL
PARALLEL
CONVERTER
IC701
•
F
J
K
D
(Page 25)
(Page
23)
(Page 22)
(Page
22)
+5VL
+5VH
– DISPLAY SECTION –
HCD-LV80
27
27
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
For schematic diagrams.
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
•
2
: nonflammable resistor.
•
1
: fusible resistor.
•
C
: panel designation.
For printed wiring boards.
Note:
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
•
a
: Through hole.
• b
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
•
U
: B+ Line.
•
V
: B– Line.
•
H
: adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
• Signal path.
F
: FM
g
: VIDEO/MD
E
: PB (DECK A)
d
: PB (DECK B)
G
: REC (DECK B)
m
: CHROMA
n
: Y
o
: VIDEO
J
: CD
c
: digital out
I
: PHONO
• Abbreviation
EA
: Saudi Arabia model.
SP
: Singapore model.
MY
: Malaysia model.
IC101
wg
MDP
1
2
3
4
WAVEFORMS
– CD SECTION –
– CD SECTION –
IC101
t;
RFAC
IC101
ra
TE
IC101
el
FE
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
1.3Vp-p
1
2
3
IC505
ug
COUT
IC505
yl
YOUT
4
5
6
7
8
9
IC509
qj
BCLK
IC509
ql
LRCK
0
qa
IC502
qd
XOUT
Q303
E
COUT
IC401
4
YOUT
IC509
1
XT1
IC504
8
384FS
IC504
6
27M
IC504
qs
– VIDEO SECTION –
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B)
Pattern face side: Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side:
Parts on the parts face side seen from the
(Side A)
parts face are indicated.
– PANEL FL SECTION –
1
2
IC501
qd
XC-OUT
IC501
qa
X-OUT
– MAIN (2/3) SECTION –
IC601
us
X OUT
1
32.768kHz
5.2Vp-p
16MHz
5.5Vp-p
12.5MHz
3.4Vp-p
APPROX 500mVp-p
2.5V
APPROX 200mVp-p
2.5V
2.6Vp-p
7.5
µ
sec
4Vp-p
10MHz
H
1Vp-p
2Vp-p
H
H
1Vp-p
2Vp-p
H
27MHz
5.8Vp-p
4.8Vp-p
2.11MHz
4.6Vp-p
44.1kHz
4.8Vp-p
33.8MHz
2.8Vp-p
33.8MHz
3.8Vp-p
27MHz
• Indication of transistor
Q
C
These are omitted
E
B
B
These are omitted.
C
E
B
These are omitted.
C
E
HCD-LV80
28
28
7-3. PRINTED WIRING BOARD – BD SECTION –
• See page 19 for Circuit Boards Location.
(Page 32)
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