JVC TH-A75R Schematic Diagrams

TH-A75R
2-3
AB CD E F G
1
2
3
4
5
OUT_L-
OUT_SL
OUT_SR
OUT_C
OUT_SB
MUTING
FROM/TO
DSP
Q5711
Mute control
IC551
8CH
VOLUME
IC560
Amp.
J5531
IC562
Amp.
IC564
Amp.
Q5731
Mute control
Q5712
Mute control
Q5713
Mute control
Q5732
Mute control
Q5701
Q5702
Mute control
9
16
10
15
12
11
34
33
32
37
31
38
Audio input/output section
29
27
26
4
5
24
23
22
1
28
IC521
DSP
15,40
42,43
2,3,44
143,144
1
55
41
45,46,48
49,52
11
17
88
31
OUT_SR
MUTING
IC531
DSP MICOM
IC511
CODEC
Q531
X531
OSC
6.14MHZ
30
OUT_SL
29
OUT_LFE
28
OUT_C
26
OUT_SB
VOL_DAT
VOL_STB
32
IN_L
33
IN_R
IC525-IC527
SDRAM
VOL_CLK
VOL_DAT
VOL_STB
D5V
D5V
DSP_RST
DSP_REDY
DSP_COM
DSP_STAT
IEC958
VOL_CLK
LVA10377-A1
FROM/TO
CN203 OF
LVA10375-A1
(System control)
CN591
IC592
REG
A3.3V
FROM/TO
Audio
input/output
DSP section
7-13
5-7,10
12-16
D1.9V
IC593
REG
Q532
X521
OSC
12.5MHZ
LVA10377-A1
4
62
IN_L
IN_R
OUT_LFE
13
Q5714
Mute control
74-77
69-72
L
R
L
R
Q5733
Mute control
TUNER_L
SCART_L
TUNER_R
SCART_R
STB/DBS IN
VCR IN
7
4
3
8
OUT4_L
OUT4_R
OUT4_SL
OUT4_SR
CN592
6
2
OUT4_C
OUT4_SB
IC566
Amp.
35
1 OUT4_LFE
TO CN701 OF
LVA10379-A1
(Power amplifier)
Q5661-Q5663
BASS BOOST
12
14
CN591
13
15
HP_L 17
HP_R 18
TO CN203 OF
LVA10375-A1
(System control)
Q5734
Mute control
S_MUTING 19
S_BASS 21
OUT_L+
OUT_R-
OUT_R+
VOL_DAT
VOL_STB
VOL_CLK
26 25 27
DIGITAL_I/O
J5521
STB/DBS
DUGITAL
IN
25
DSP_CLK
43
IC524
FLASH-ROM
84
IC532
IC533
2
1
4
47
15-19
44
18,57
64-67
IC512
DAC
4
12
OUT_L+
11
OUT_L-
10
OUT_R+
9
OUT_R-
6,41
DIGITAL_I/O
DSP board
IC540
Amp.
IC557
Amp.
IC544
Amp.
IC546
Amp.
IC548
Amp.
DSP board
14
54,56,66
5-8
1,2,4
3
CN171
T101
POWER
TRANS.
9
2
15
7
3
4
Q172
REG.
TO
FAN MOTOR
5
+37V
7
+22V
6
L103
IC101
SWITCH
REG.
TO CN703 OF
LVA10379-A1
(Power amplifier)
LVA10378-A1
AC IN
Q184-Q186
F101
D101
Power supply section
CN101
2
1
L101
L102
5
6
+37V
8
+22V
11
-22V
13
-37V
12
-22V
14
-37V
11
10
T121
POWER
TRANS.
1
1
4
IC121
SWITCH
REG.
5
3
4
3
4
+12V
2
-12V
1
PROTECT
CN172
13
F2
14
F1
8
9
Q171
REG.
15
-VDSP
12
IC171
REG.
21
CN173
2
DVD3.3V
3
DVD3.3V
4
DVD5V
6
D5V
7
M9V
8
M9V
13
16
Q161
REG.
16
B5V
12
SYS-PON
11
DVD-PON
10
BEAT CUT
9
AMP-PON
8
FAN-CTL
7
FAN-ON/OFF
6
-12V
5
-7V
2
+7V
1
+12V
14
Q162
REG.
Q165
REG.
Q166
REG.
Q183
REG.
CN174
1
4
Q163
Q164
Q174
Q175
Q176
Q177
IC102
-IC104
PHOTO
COUPLER
Q188
Q181,Q182
Q187
TO CN201 OF
LVA10375-A1
(System control)
TO CN202 OF
LVA10375-A1
(System control)
Power amplifier section
IC701
WOOFER
AMP.
12
13
3
CN701
4
SL
3
SR
2
SB
1
LFE
8
R
7
L
6
C
IC721
MAIN
AMP.
26
28
25
16
21
15
7
9
3
1
6
10
RY701-RY704
8
6
4
2
J702
LFEOUT
FROUT
FLOUT
FCOUT
6
4
2
J701
SROUT
SLOUT
SBOUT
+12V
CN702
2
RELAY_CTL
1
PROTECT
6
SAFETY
Q751,Q753-Q757
PROTECTOR
Q731,Q732
RELAY CTL.
Q761
LOW VOLTAGE DET.
CN703
14
PROTECT
LVA10379-A1
TO CN592 OF
LVA10377-A1
(Audio input/output)
TO CN204 OF
LVA10375-A1
(System control)
TO CN171 OF
LVA10378-A1
(Power supply)
Power board
IC122
IC123
PHOTO
COUPLER
Q178
Amplifier board

JVC TH-A75R Specifications

General

Brand	JVC
Model	TH-A75R
Category	Home Theater System
Language	English