Read Sony CX-JS7 / JAX-S7 Service Manual online
CX-JS7
24
24
6-3.
BLOCK DIAGRAM – AMP/POWER SUPPLY Section –
J221
R-CH
PHONES
R-CH
–VL
–VP
+VP
–VH
OUTPUT LEVEL
DETECT
Q23, 24
Q23, 24
BIAS
Q507, 509
FEED BACK
SWITCH
Q491
FINAL DRIVE
Q501, 503
SWITCHING
Q17, 19, 22
SWITCHING
Q18
R-CH
R-CH
+
+
R-CH
CASCADE
Q511, 513, 515
PRE DRIVE
Q517, 519
MUTING
Q525
CURRENT
MIRROR
Q521, 523
FREQUENCY
CONTROL
Q314 – 316
BASS BOOST
ON/OFF SWITCH
Q323
R-CH
+
+VL
+VH
OUTPUT LEVEL
DETECT
Q20, 21
Q20, 21
1
14
6
9
BASS BOOST ENHANCER
IC303
INPUT SELECTSWITCH, TONE CONTROL,
ELECTRICAL VOLUME, BASS BOOST AMP
IC301
BASS BOOST
CONTROLLER
IC310
CTRL1 –
CTRL3
INA
VREF
7
BBE
13
GIN
I-BASS
19
SAOUT
OUTA
29
TOUT
25
OUT2
3
DATA
4
CLOCK
LCK
S-MUTE
O-POWER
O-POWER
HOLD
CLK
SO
5
LCK
35
RECB-2
12 – 10
BASS BOOST
CONTROL
Q317 – 320
BB CTRL1 –
BB CTRL4
16 – 13
40 CD-L
MD-L
39 TUNER-L
38 TAPE-L
28 VOLIN2
–30V
REGULATOR
Q533 – 536
(AC IN)
SUB POWER
TRANSFORMER
PT902
MAIN POWER
TRANSFORMER
PT901
RECT
D2
+VL
TO
POWER AMP
BLOCK
–VL
VL
VL
VF1
TO
FLUORESCENT
INDICATOR TUBE
VF2
RECT
D1
+VH
–VH
VM+9V
VM+10V
–VFL
EVER+10V
VH
VH
RECT
D319 – 322
RECT
D301 – 304
VM
VM
VCC
RECT
D902 – 905
DECK+9V, M+9V
+4V
REGULATOR
IC501
+3.3V (SUB)
POWER DOWN
RESET
D504
RESET SIGNAL
GENERATOR
IC502
CD-L
A
TUNER-L
J
TAPE-L, REC-L
TAPE-L
REC-L
G
DI, SO, CLK,
MCLK, LCK
MCLK, LCK
K
RESET,
POWER DOWN
POWER DOWN
C
21
DATA
22
CLOCK
SA
(Page 23)
E
S-MUTE, O-POWER, HOLD
B
(Page 22)
HP
F
(Page 23)
(Page 22)
(Page 23)
(Page 23)
(Page 23)
(Page 22)
RY902
POWER ON/OFF
RELAY DRIVE
Q330, 331
+10V
REGULATOR
IC313
+9V
REGULATOR
IC308
D102
P+7V
D313 – 315
+9V
REGULATOR
IC305
+4V
REGULATOR
IC306
B+ SWITCH
Q301, 302
RELAY B+
+9V
+1.8V (MP3)
+3.3V
(MAIN)
+1.8V
REGULATOR
IC803
RESET SWITCH
Q901
M731
(FAN)
(FAN)
M
: TAPE PLAY
: REC
: CD PLAY
: TUNER (FM/AM)
SIGNAL PATH
: MD (VIDEO) IN
R-ch is omitted due to same as L-ch.
R-CH
JK302
L
R
MD (VIDEO)
IN
37
BASS BOOST
CONTROL
Q492
R-CH
BUFFER
IC304
CENTER VOLATAGE
GENERATOR
Q324
VM+10V
MCLK
DI
+
SPEAKER
+
–
–
–
+
R
L
JK502
H
(Page 23)
R-CH
SPEAKER ON/OFF
RELAY DRIVE
Q304
RY501
SP-F
FAN MOTOR
ON/OFF SWITCH
Q327, 328, 372, 373
+4V
HOLD
Q7 – 9
O-POWER
HOLD
R-CH
OVER LOAD
DETECT
Q505
DC DETECT
Q5, 6
THERMAL DETECT
Q10, 11
+
+
TH501,
502
+
R-CH
+
MUTING CONTROL
SWITCH
Q527
POWER OFF
MUTING DRIVER
Q529, 530
D513
VM+10V
HOLD
Q12
OVER CURRENT
DETECT
Q13
+
RELAY B+
DC DETECT
Q329
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