Sony HCD-DR7AV / HCD-XB800AV / LBT-DR7AVS Service Manual ▷ View online
HCD-DR7AV/XB800AV
– 31 –
– 32 –
– POWER SECTION – (XB800AV model)
TM402
L
R
CENTER
SURROUND
REAR
RELAY
DRIVER
Q403, 407
PROTECT
SWITCH
Q439
R-CH
RY402
LATCH
DRIVER
Q437
PROTECT
SWITCH
Q431
RECT
D907-910
SUB-TRANSFORMER
T901
AC
IN
POWER
SWITCH
Q902
RECT
D902-905
+5.6V
REG
IC901
+5.6V
VF
1
3
SWITCH
Q907
–30V REG
Q903
SWITCH
Q904-905
SWITCH
Q906
VF
VF
RECT
D831
D831
+VH
RECT
D841-844
+VL
–VL
RECT
D832
D832
POWER
TRANSFORMER
T951
RECT
D833-836
+UNREG. 12V
+UN 10V
–VH
STANDBY
RELAY CONTROL
Q901
STANDBY
RELAY
RY901
RY901
JW954
REAR-L
CENTER
PL-RELAY
F-RELAY
L-CH IN
EVER +5V
MIC VOLUME
RV850
MIC AMP
IC850 (1/2)
8
2
LPF 1 OUT
LPF 2 OUT
ECHO CONTROL
IC851
11
9
LPF 2 IN
OP 2 IN
10
OP 2 OUT
1
LPF 1 IN
MIC LEVEL
RV851
MIC AMP
IC850 (2/2)
STK-POWER
13
8
POWER AMP & VOLUME CONTROL
IC801
VOLUME
CONTROL
D802, 852
MUTE
CONTROL
Q834
MUTE
SWITCH
Q803
HEAD PHONE
MUTE
Q833
MUTE
DRIVE
Q804
HP-MUTE
D804
TM401
L
R
FRONT
RELAY
DRIVER
Q401-402
R-CH
RY401
POWER
ECO
09
J801
MIX MIC
PROTECT
14
XB800AV
7
XB800AV
MIC-SIG
J803
PHONES
MIC-SIG
HP.SW
DISPLAY
SECTION
K
MAIN 1
SECTION
MAIN 2
SECTION
H
15
22
12
5
6
THERMAL
SENSOR
VOLUME
CONTROL
THERMAL
SENSOR
Q831-832
L-CH THERMAL
PROTECT SWITCH
Q801
MAIN 1
SECTION
G
(Page 26)
MAIN 1
SECTION
E
(Page 26)
MAIN 2
SECTION
L
(Page 28)
MAIN 1
SECTION
M
(Page 26)
MAIN 2
SECTION
N
(Page 27)
MAIN 2
SECTION
I
(Page 27)
(Page 33)
(Page 25)
(Page 27)
C
• SIGNAL PATH
: FM
: FM
• R CH : Same as L ch
PROTECT
DC AMP
Q433-434
LATCH
DRIVER
Q432
HCD-DR7AV/XB800AV
– 33 –
– 34 –
– DISPLAY SECTION –
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
D671 – D675
F06
F05
F04
F02
F01
RESET
DATA
CLOCK
WAKE UP
A –7V
A +7V
MIC–SIG
SPE–ANA
09
MAIN 1 SECTION
MAIN 2 SECTION
POWER SECTION
MAIN 1 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
ROTARY
ENCODER
D601 – D603
7
80
D604 – D607
Q601 – Q603
Q605 – Q607
Q608 – Q610
D611 – D613, D616 – D621,
D623 – D627, D635 – D638
D623 – D627, D635 – D638
D700
D631, D632
11
15
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
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
5
7
9
20
22
•
•
P3
P5
P7
P11
P12
P14
•
•
•
17
19
P1
P2
CLK
STB
DATA
SERIAL
PARALLEL
CONVERTER
IC604
D604 – D607
•
F
J
K
D
(Page 30, 32)
(Page
27)
(Page 26)
(Page
26)
HCD-DR7AV/XB800AV
– 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 pro-
duction tolerances.
duction 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
EA
: Saudi Arabia model.
AUS
: Australian model.
SP
: Singapore model.
TH
: Thai model.
IC101
#ª
FE
1
2
3
4
5
WAVEFORMS
– BD (CD) SECTION –
– BD (CD) 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
– PANEL 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 identified by mark
!
or dotted
line with mark
!
are critical for safety.
Replace only with part number specified.
HCD-DR7AV/XB800AV
– 37 –
– 38 –
7-3. PRINTED WIRING BOARD – BD (CD) SECTION –
• See page 19 for Circuit Boards Location.
(Page 42)
(VC)
(RP)
(AGCCON)
(FE)
(FF1)
(TE)
19
Q
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