Sony HCD-XB8KW Service Manual ▷ View online
— POWER SECTION —
• R CH : Same as L ch
• SIGNAL PATH
• SIGNAL PATH
: FM
: SUPER WOOFER
: SUPER WOOFER
Rch
Rch
Q323
Rch
1
2
4
7
PROTECTOR
IC301
PROTECT
SWITCH
Q301
RY402
OVER LOAD
DET
Q601,651
THERMAL
DET
Q670,671
THP670
S. TWEETER
GAIN
CONTROL
Q3101
S. TWEETER
GAIN
AMP
IC3101, 3102
S. TWEETER
CONTROL
SW
Q3105-3107
18
13
1
13
6
10
1
RY401
–1
–2
POWER AMP
IC601
IC601
OVER LOAD
DET
Q201
Rch
POWER AMP
IC201
REAR
CENTER
FRONT
DBFB
ST SW
STK MUTE
R RELAY
D5V
SWITCHED
D5V
SW
Q905
D905
+5V
D7V
A+7.5V
A–7.5V
+5V REG
IC902
+7V REG
IC903
+12V REG
IC904
+12V
ST10V
PRO-LOG 10V
+10V REG
IC905
+7V, –7V REG
IC901
Q907
Q901
VFDP
UNREG
–12V
POWER B+
POWER B–
SURR B+
SURR B–
AC
IN
AU/D5V SW
CD POWER
6
1
10
REAR
CENTER
FRONT
FRONT
SPEAKER
TM401
PHONES
J760
Rch
HP / SP
SWITCHING
Q401,405
S. WOOFER
GAIN CONTROL
Q3104
OVER LOAD
DET
Q3001, 3002
RELAY
DRIVE
Q3108, 3111
+B
PROTECTOR
SWITCH
Q3109
FRONT
REAR
CENTER
SURROUND
SPEAKER
TM402
6
1
2
4
7
PROTECTOR
IC3002
–1
RY3001
RELAY
DRIVE
Q404
Q404
Rch
FAN MOTOR
DRIVER
Q961, 962
M
UNREG
–12V
–12V
M901
FAN
MOTOR
REAR
CENTER
WOOFER
SYSTEM
J3201
3
1
S. WOOFER
PRE AMP
IC3003
S. WOOFER
MAIN AMP
IC3001
S. WOOFER PRE AMP
IC3103
5
1
3
1
1
10
2
9
4
3
1
3
1
RELAY
DRIVE
Q403
RELAY
CONTROL
Q402
MUTE
SWITCH
Q331
POWER ON/OFF
CD REG
Q904
+5V REG
Q906
+7.5
–7.5
EN
V
CC
V
EE
RECT
D901
D901
VF REG
Q941
RECT
D104,105
RECT
D101
D101
RECT
D102
D102
RECT
D302,303
VF
VF
T501
POWER
TRANSFORMER
MAIN
SECTION
D
09
(Page 10)
+
–
–
6
Rch
IN
OUT
3
1
2
Rch
– 11 –
– 12 –
HCD-XB8KW
– 46 –
3-14. IC BLOCK DIAGRAMS
• Main section
IC102 MC14052BCP
1
2
3
4
5
6
7
8
B1
B0
C.COM
CO
INH
VEE
VSS
VDD
B.COM
A.COM
A1
A0
A
B
C
C1
9
10
11
12
13
14
15
16
OPEN
OPEN
OPEN
IC103, 1702 MC14053BCP
IC601 LA2786
1
2
3
4
5
6
7
8
9
15
10
11
12
+
13
14
16
21
18
19
25
17
24
22
23
20
34
32
33
29
30
35
28
31
27
26
36
40
39
38
37
41
42
NOISE
FILTER
NOISE
CH
BALANCE
CONTROL
VR
CONTROL
LPF
V REF
VR
VR
NOISE
GENERATOR
VCA
VCA
VCA
VCA
VCA
VCA
VCA
VCA
LPF
LPF
RECT
RECT
RECT
RECT
P. S.
P. S.
CMODE
MUTE
DIVIDER
OSC
CONTROL
CTRIM
LOG
DIFF
DIFF
LOG
DIFF
DIFF
DUAL T
CONTROL
L-IN
R-IN
V
SS
CLK
DATA
V
CC
L-OUT
R-OUT
S-OUT
C-OUT
ENABLE
OSC1
CMODE-CAP.
C-TRIM DC CUT
R-BPF1
R-BPF2
R-BPF3
DC CUT
DC CUT
L-R RECT
L+R RECT
VCS-TH
VCS-1
VCS-2
BPF1
BPF2
VREF
S-CH DC OUT
C-CH DC OUT
L-CH DC OUT
R-CH DC OUT
VREF
L-BPF1
L-BPF2
L-BPF3
DC CUT
DC CUT
R RECT
L RECT
VLR-TH
VLR-1
VLR-2
+
14
15
16
13
12
11
10
9
0
2
COMMON
3
1
INHIBIT
V
EE
V
SS
V
DD
2
1
COMMON
3
0
SEL.A
SEL.B
DECODER
1
2
3
4
5
6
7
8
– 47 –
IC602 LV1016
1
5
6
+
–
+
20
19
18
17
16
15
14
13
21
22
23
24
2
3
4
7
8
9
10
12
11
+
DEC
IN-FILTER
(40kHz)
VDD
ADM-CONT
SRAM
ADM
OUT-FILTER
(7k/5k)
B-NR
DC-OUT
VOL/MUTE
S-TRIM
INV-PHASE
R+DELAY
L+DELAY
A
B
A
B
A
B
A
B
A
B
A
B
A
B
L–R
L+R
(–6dB)
A
B
A.GND
L-OUT
R-OUT
VREF
S-OUT
DELAY-OUT
S-IN
R-IN
L-IN
VCC
NR-DET
ENABLE
DATA
CLK
D.GND
DC-CUT
VDD
OSC
OSC
NR-IREF
DC-CUT
L-CH
DATA
LATCH
CIRCUIT
R-CH
DATA
LATCH
CIRCUIT
2
3
4
5
6
7
8
1
15
14
13
12
11
10
9
16
SHIFT RESISTER
(13bit)
STROBE OSC
CIRCUIT
LEVEL
SHIFT
CIRCUIT
LEVEL
SHIFT
CIRCUIT
V
SS
OUT
IN
L-CH
A-GND
NC
CS1
GND
CK
V
DD
OUT
IN
A-GND
NC
CS2
STB
DATA
R-CH
ON/OFF
CURRENT
LIMITER
START
CIRCUIT
VREF
OVER HEAT
PROTECT
ON/OFF
CURRENT
LIMITER
1
2
3
4
5
6
7
8
9
10
VCC
VMUTE
VCC
VREF
ERROR
AMP
VREF
ERROR
AMP
VO1
VCC
CN1
EN
EN DISPLAY
GND
NC
CN2
VEE
VO2
~
_1.8V
~_
140uA
COMPARATER
IC901 LA5617
IC604 TC9210P
IC402 LB1641
1
2
3
4
5
6
7
8
9
10
GND
MOTOR
DRIVE
NOISE
FILTER
CLAMP
FWD.IN
REV.IN
VCC 1
VCC 2
NOISE
FILTER
MOTOR
DRIVE
MOTOR
DRIVE
MOTOR
DRIVE
T.S.D
O.C.P
FWD/REV/STOP
CONTROL LOGIC
– 48 –
• KEY CON section
IC1401 M65847FP
1
2
3
4
5
6
7
8
ADCONT
DA1CONT
KEY DOWN
KEY UP
DAIINTIN
ADINTOUT
ADINTIN
LPF1
REF
REF
REF
REF
HPF
LPF2
MIX
CLKO/KEY0
SDATA/KEY1
SCK/KEY2
STROBE/KEY3
KEY4
KEY5
REF
GND
VCC
MODE2
MODE1
DAIINTOUT
LPF1IN
LPF1OUT
HPFIN
HPFOUT
LPF2IN
LPF2OUT
MIXIN
MIXOUT
DA2CONT
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
+
–
LOGIC
D/A
RESET
RAM
A/D
CLOCK
GENERATOR
REF
+
–
+
–
+
–
1
2
3
4
5
6
7
8
B1
B0
C.COM
CO
INH
VEE
VSS
VDD
B.COM
A.COM
A1
A0
A
B
C
C1
9
10
11
12
13
14
15
16
OPEN
OPEN
OPEN
IC1403 MC14053BCP
IC761 M65850P
• Panel section
OSCILLATOR
1/2 VCC
AUTO
RESET
LPF1
MAIN
CONTROL
A/D
20KBIT
SRAM
LPF2
D/A
1
2
3
4
5
6
7
8
9
10
14
13
12
11
CLOCK
RESET
MO
MI
D1
DO0
DO1
VCC
CLOCK
REF
OP2IN
OP2OUT
LPF2IN
LPF2OUT
LPF1IN
LPF1OUT
OP1OUT
OP1IN
CC1
CC2
GND
• Power, Sub Amp section
IC301, IC3002 uPC1237HA
1
2
3
4
5
6
7
8
OVER LOAD DET
F/F
OFFSET DET
LATCH/
AUTORESET
V
CC
ON
MUTE
AC OFF
DET
V
CC
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