JVC TH-V70R, Service Manual

Page: 8 / 18

TH-V70R
2-7
A B C
1
2
3
4
5
7
6
8
4
3
5
2
1
31 57
IC100
GND
.ISO
.AMP
Mini Din CONNECT
OR
J100
W
OIN
FLIN
31 57
IC101
GND
.ISO
.AMP
FCIN FRIN
31 57
IC102
GND
.ISO
.AMP
RLIN
RRIN
21 67
IC103
PHASE REVERSE
AMP
S100
PHASE SW
REVERSE
NORMAL
VR100
W
OOFER GAIN
PRESET V
OLUME
- 12V +12V
P.
C
N
T
CN101
LV
A10203-A2
31
IC108
HPF
- 12V
31 57
IC109
HPF
31 57
IC110
HPF
CN201
- 12V +12V
- 12V +12V
PR
TCT
51
IC104
LPF
IC105
W
OOFER AMP 3
IN1
12 13
- OUT +OUT
IC201, IC202
AMP
Q211
THERMAL
PR
O
TECT
OR
2
Q205,Q210
PO
WER
SWITCH
LV
A10204-A2
Pre-amplifier boar
d
P
o
wer amplifier boar
d (A)
LV
A10204-A1
P
o
wer amplifier
& SP terminal boar
d
CN109
R
Y401-R
Y403
4 3
J101
5 4
J102
6
RR
OUT
RLOUT FCOUT FR
OUT
FLOUT
IC107
MAIN AMP
16
CH3IN
18 19
CH3+VE CH3-VE
15 10 11
CH2IN CH2+VE CH2-VE
6 7
CH1+VE CH1-VE
1
CH1IN
IC106
MAIN AMP
15
CH2IN
10 11
CH2+VE CH2-VE
6 7
CH1+VE CH1-VE
1
CH1IN
+12V
Q508-Q514
MUTE
CONTR
OL
LED1 LED2 PR
Y1
PR
Y2
Q500-Q505
PO
WER CONTR
OL
& PR
O
TECT
OR
Q515-Q517 Q522,Q523
PR
O
TECT
OR
A
C
IN
F403
CN108
R
Y400
CN107
T101
TRANS
.
CN104
A
C/DC
D511-D514
A
C/DC
D515-D518
+40V
+20V
- 20V
+12V REG
Q506,Q507
F504
MCONOUT
MCONIN
Q202
PR
Y2
PR
Y1
PR
Y1
PR
Y2
Q303 Q302
PR
TCT
PR
TCT
PR
T
PR
T
PR
T
PR
T
PR
T
PR
T
PR
T
P
.CNT
P
.CNT
P
.CNT
Q518-Q521
LO
W V
O
LT
A
G
E
DETECT
OR
+20V - 20V +40V - 40V
PR
TCT
LV
A10203-A1
Mother boar
d
Q304
SP-THV70 powered subwoofer section
12
11
10
9
8
7
6
5 1
CN202
CN102
1
2
3
CN203
CN103
8
7
6
- 40V
+12V
- 12V
3
4
5 7
8
9
CN210
CN110
6
4 3 2 1
2 1
1 5
CN211
CN111
9
10
3 6
13
11
10
6
4
CN206
CN106
8
20
19
17 13
11
CN205
CN105
15
Q301
5
3
1
Q300
1 5 2 4
F505
1 5 2 4
1 2
1 2
1 2
<Speaker section>
LV
A10204-A3
P
o
wer suppl
y boar
d (B)
7