Sony HCD-DR8AV / HCD-W900AV Service Manual ▷ View online
HCD-DR8AV/W900AV
— 31 —
— 32 —
POWER SECTION (W900AV model)
F-RELAY
L-CH IN
EVER +5V
MIX MIC
MIC VOLUME
RV850
MIC AMP
IC850 (1/2)
MIC AMP
IC850 (2/2)
STK-POWER
15
12
16
THERMAL
SENSOR
5 6
VOLUME
CONTROL
22
POWER AMP & VOLUME CONTROL
IC801
VOLUME
CONTROL
D802, 852
OVERHEAT
DET
Q831,832
MUTE
SWITCH
Q803,804
SWITCH
Q833
HP-MUTE
PROTECT
16
D804
MIC-SIG
J803
TM401
PHONES
L
R
FRONT
RELAY
DRIVER
Q401-402
R-CH
RY401
–35V REG
Q903,904
VF (–35V)
+VH
-VH
-VH
VF
VF
RECT
D833-836
+UNREG. 12V
UN +10V
UN –10V
VF
VF
RECT
D841-844
+VL
-VL
RECT
D832
D832
RECT
D831
D831
POWER
TRANSFORMER
T951
AC
IN
MAIN 1
SECTION
G
(Page 26)
MAIN 2
SECTION
I
(Page 27)
MAIN 2
SECTION
P
(Page 27)
MIC-SIG
HP.SW
DBFB
DISPLAY
SECTION
K
(Page 33)
MAIN 1
SECTION
C
(Page 25)
MAIN 2
SECTION
H
(Page 27)
MAIN 1
SECTION
O
(Page 26)
J801
MAIN 1
SECTION
E
(Page 26)
MAIN 2
SECTION
L
(Page 28)
• SIGNAL PATH
: FM
: FM
• R CH : Same as L ch
MUTE
SWITCH
Q103,104
L
R
CENTER
SURROUND
REAR
RELAY
DRIVER
Q403, 407
PROTECT
BUFFER
Q439
R-CH
RY402
PROTECT
DRIVER
Q437
RELAY
SWITCH
Q431
HEADPHONE
MUTE
Q805
TM402
REAR-L
CENTER
PL-RELAY
MAIN 2
SECTION
N
(Page 29)
MAIN 1
SECTION
M
(Page 26)
PROTECT
DC DET
Q433,434
PROTECT
DET
Q432
DBFB
DET
D803
R-CH
R-CH
SURROUND AMP
IC101
12
14
16
8
9
R-CH
OVERLOAD
DET
Q801
OVERLOAD
DET
Q101
OVERLOAD
DET
Q151
7
THERMAL
SENSOR
OVERHEAT
DET
Q131,132
PRE
-VCC
Q834
SWITCH
SWITCH
-VH
CCC
F961
F963
F964
F962
RECT
D907-910
VF
D912
SUB-TRANSFORMER
T901
RECT
D902-905
+5.6V REG
IC901
POWER SWITCH
Q902
+5.6V
VG
1
SWITCH
Q907
–30V REG
Q903
SWITCH
Q904,905
SWITCH
Q906
RELAY
SWITCH
Q901
STANDBY
RELAY
RY901
RY901
POWER
ECO
3
HCD-DR8AV/W900AV
— 33 —
— 34 —
DISPLAY SECTION
6
4
79
78
73
22
70
X601
12.5MHz
72
13
12
11
14
16
17
19
20
21
18
17
16
43
28
27
REC LEVEL
SPEANA
IC603
REC LEVEL
D671 – D675
F06
F05
F04
F02
F01
RESET
DATA
CLOCK
WAKE UP
A –7V
A +7V
MIC–SIG
SPE–ANA
16
MAIN 1 SECTION
MAIN 2 SECTION
POWER SECTION
MAIN 1 SECTION
LINE IN
REC IN
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
42,40
GR-2
14
DRIVER
74
75
77
9
10
3
4
5
14
15
13
1
2
2
3
4
4
5
17
19
20
20
21
22
7
8
9
10
11
LED SWITCH
KEY
ROTARY
ENCODER
D601 – D603
7
80
Q603
Q605 – Q607
Q608 – Q610
LED POWER
SWITCH
1
REMOTE
CONTROL
RECIEVE
IC602
S701
VOLUME
2
8
ROTARY
ENCODER
S702
JOG
S691
6
OPEN
SIRCS
JOG A
JOG B
VOLUME A
VOLUME B
13
KEY 2
KEY
14
KEY 3
KEY
11
KEY 0
KEY
12
KEY 1
KEY
15
KEY 4
LED SCK
LED LATCH
LED DAT
DAILY LED
REC LED
LED-EC0
GR-1
GR-15
GR-16
LED SEL
D-SW
CLK
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12
P13
P14
P15
STB
DATA
SERIAL
PARALLEL
CONVERTER
IC604
F
J
K
D
(Page 30, 32)
(Page 27)
(Page 26)
(Page 26)
Q601
SWITCH
SWITCH
LED5V
Q602
LED POWER
SWITCH
LED5V
D641
D631
D636
D638
D612
D613
D617
D620
D619
D624
D626
D605
D607
D631
D636
D638
D612
D613
D617
D620
D619
D624
D626
D605
D607
D632
D635
D637
D611
D614
D616
D618
D621
D623
D625
D627
D604
D606
D635
D637
D611
D614
D616
D618
D621
D623
D625
D627
D604
D606
D700
EVER5V
S601-604,606-615
S617-620,641-647,672-674
S625-630,632-637
S651-659,676-679,681-683
S661-666
HCD-DR8AV/W900AV
— 35 —
— 36 —
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.
•
¢
: internal component.
•
C
: panel designation.
For printed wiring boards.
Note:
• X
: parts extracted from the component side.
•
®
: Through hole.
•
¢
: internal component.
• 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)
J
: CD
c
: digital out
I
: PHONO
• Abbreviation
CND
: Canadian model
AUS
: Australian model
EA
: Saudi Arabia model
MX
: Mexican model
SP
: Singapore model
AR
: Argentina model
IC101
#ª
FE
1
2
3
4
5
Waveforms
– BD SECTION –
– BD SECTION –
IC101
^¶
XTAI
IC101
%¡
RF AC
IC101
$¡
TE
IC101
@§
MDP
• Indication of transistor
C
These are omitted
E
B
Q
C
These are omitted
E
B
1
IC601
&™
X-OUT
– FL Section –
1
2
IC501
!¡
XC-OUT
IC501
!£
X-OUT
– MAIN (2/5) Section –
3.1Vp-p
16.9MHz
1.2Vp-p
(PLAY)
2.5V
APPROX 500mVp-p (PLAY)
2.5V
APPROX 200m Vp-p (PLAY)
7.5
µ
sec
2.4Vp-p
16MHz
5.5Vp-p
32.768kHz
5.2Vp-p
12.5MHz
3.4Vp-p
Note:
The components identi-
fied by mark
The components identi-
fied by mark
!
or dotted
line with mark
!
are criti-
cal for safety.
Replace only with part
number specified.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
Les composants identifiés par
une marque
!
sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
HCD-DR8AV/W900AV
— 37 —
— 38 —
7-3. PRINTED WIRING BOARD BD SECTION
16
(Page 42)
(VC)
(RP)
(AGCCON)
(FE)
(FF1)
(TE)
19
Q
16
• Refer to page 19 for Circuit Boards Location.
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