Jvc-THA-75-R-Service-Manual.pdf
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TH-A75R
SCHEMATIC DIAGRAMS
DVD DIGITAL CINEMA SYSTEM
TH-A75R
CD-ROM No.SML200302
Area suffix
B ------------------------------- U.K.
E ----------- Continental Europe
EN ------------ Northern Europe
EV -------------- Eastern Europe
SP-XSA75
TV
AUDIO
VCR
VIDEO/
TV SOUND
FM/AM
DVD
VCR 1
AUDIO
ANGLE
SUBTITLE
DECODE
TOP MENU
MENU
RETURN
DIGEST
SP-XCA75
SURROUND
DSP
OFF
SOUND
CONTROL
EFFECT
1
2
3
VCR
Ð
+
Ð
+
S.WFR
CENTER
TEST
4
5
6
SLEEP
TV
7
8
9
Ð
+
Ð
+
Ð
+
SURR-L
S-BACK
SURR-R
SETTING
10
0
+10
100+
ADJUST
TV RETURN
FM MODE
TA/NEWS/INFO
ON
SCREEN
DVD
RDS
PTY
PTY
ENTER
CHOICE
VFP
RDS DISPLAY
PTY SEARCH
TV VOL
CHANNEL/ZOOM
VOLUME
TV/VIDEO
MUTING
/REW
PLAY
FF/
DOWN
TUNING
STOP
DIMMER
UP
O.T.
REPLAY
PAUSE
REC
MEMORY
STROBE
STANDBY
RGB
SOURCE
VOLUME
D V D D I G I T A L C I N E M A S Y S T E M
PHONES
COMPACT
SUPER VIDEO
RMÐSTHA75R
DVD CINEMA SYSTEM
DIGITAL¥EX
PRO LOGIC
SP-WA75
XV-THA75R
Contents
2-1
2-4
2-15~21
Block diagrams
Standard schematic diagrams
Printed circuit boards
No.21189SCH
2003/02
COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LTD.
TH-A75R
In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the
parts that are printed over with black such as the resistor ( ), diode ( ) and ICP (
) or identified by the " "
mark nearby are critical for safety.
(This regulation does not correspond to J and C version.)
TH-A75R
Block diagrams
Overall block diagram
System control section
FROM/TO
CN591 OF
LVA10377-A1
(DSP)
LVA10375-A1
Main board
FROM/TO
TUNER UNIT
CN205
CN203
5
TU-R
TU-R
8
17
TU-L
TU-L
6
18
Q2801
Q2802
S-MUTE
DRIVER
B/E/EN/EV
version
16
IC201
RDS DECODER
8,9,10
S-MUTING
11
RDS
10
only
CN701
TU-DTO
4
TU-CKJ
3
IEC958
29
TU-DTI
2
X2071
OSC
TU-CE
1
HP-R
12
FROM/TO
CN503 OF
LVA10298-C1
(DVD servo)
HP-L
13
CN592
SCART-L
16
SCART-R
15
CN208
BASS
9
SPDIF
VOL_CLK
CN205
14
8
DISKSTP
VOL_LATCH
16
29
67,68
7
SSPCLK1B
17
70,72-74
76
VOL_DATA
6
4
FLINT
18
DSP-CLK
5
SSPOUT1B
19
DSP-STAT
4
SSPIN1A
21
DSP-COM
3
FLCS-
34,35
42-47
51
23
DSP-RDY
2
CPURST
25
DSP-RST
1
SWUPDN
27
21-26
82,83
98,99
SWOPEN
D5V
28
26
D5V
25
SCART_RIN
SCART_LIN
SW1-SELECT1
SW1-SELECT2
SW1-SELECT
87-89
90
IC271
SYSTEM MICOM
X2701
OSC
8MHz
13
CN591
BLANK-CTL
VIDEO-LPF
VIDEO-YCMIX
VIDEO-RGB
CN203
CN204
TO
Video
input/output
3
49,56,57
54
55
VIDEO-MUTE1
VIDEO-MUTE2
3
4
VCR-S/C
DBS-S/C
CN202
CN201
CN206
CN209
CN208
CN207
36
AVVLR
Q2703
2
PAL/NTSC
FROM/TO
CN401 OF
LVA10376-A1
(FL display)
CN502
CN503
CN171
CN173
CN172
CN402
CN401
8,9,18,20
61,91,92
27
81
79
80
6
33
59
62-64
75
CN207
DI-RESET
19
FROM/TO
CN173 OF
LVB10378-A1
(Power supply)
DI-CS
18
DI-DATA
17
DI-CLOCK
Q2861
STBY
LED
CTL
16
2
KEY1
KEY2
CN202
D5V
15
14
5
REMOCON
13
FROM/TO
CN172 OF
LVB10378-A1
(Power supply)
HP
HP-R
10
W401
IC251
HP AMP.
9
CN174
HP-L
7
CN201
6
7
S-PON
DVD-PON
BEAT CUT
AMP-PON
8
9
CN101
Q2701
BACKUP
LVA10378-A3
2
B5V
Power key board
IC272
Q2702
RESET
POWER
Q2821
SAFETY1
DETECT
+12V
-12V
1
7
12
CN402
CN206
STANDBY
CN201
CN202
CN101
4
4
1
FAN-ON/OFF
FAN-CTL
11
10
1
1
A
B
C
D
E
F
G
2-1
TH-A75R
TH-A75R
DVD servo section
Video input/output section
LVA10375-A1
Main board
J2891
AVVLR
AV COMPULINK
S2401
RGB/YC
SW
NTSEL
TO
System
control
5
J2403
14
23
B
B/CV
7
11
25
11
G
G/CV
14
5
16
R/C
21
Q2311
15
R/C
11
CV/Y
16
BLANKING
IC231
VIDEO
DRIVER
9
8
6
J2201
19
COMPOSITE/Y
11
C
5
16
1
J2401
14
3
2
Q2301
33
S/COMPOSITE
VIDEO IN 1
9
8
CV
6
Y
IC211
VIDEO
SW1
S/COMPOSITE
VIDEO OUT
16
1
3
6
31
CV
C
4
IC221
VIDEO
SW2
8
28
Y
C
S/COMPOSITE
VIDEO IN 2
Y
CV
VIDEO-SW2
VIDEO-SW1/SW3
VIDEO-MUTE1/MUTE2
VIDEO-Y/C-MIX
VIDEO-RGB
VIDEO-LPF
BLANK-CTL
Q2483
Q2484
TO
System
control
3
FL display section
Switch board
LVA10376-A1
FROM/TO
CN207 OF
LVA10375-A1
(System control)
27
39
Q403
Q405
PROG/RGB
LED&DIMMER
D401
CN4
01
IC402
Remocon
receiver
REMOCON
7
INITIAL
2
29
Q404
Q406
ILLUMI
LED&DIMMER
D402
D403
DATA IN
3
IC401
DISPLAY MICOM
2
CLOCK
4
40
2,3,5,26
RESET
1
B5V
8
B5V
12V
100
12V
14
X401
OSC
8MHz
D5V
D5V
16
9,10
-VDISP
17
F2
18
G1-G14
P1-P35
F1
19
LVA10378-A4
KEY1
1
62
5
DI401
FL DISPLAY
KEY2
6
Headphone board
J401
HEADPHONE
HP-R
11
S402-S410
, , , , ,SOURCE
VOL-,VOL+,
HP-L
13
CN403
W401
HP
10
3
1
3
1
1
4
4
A
B
C
D
E
F
G
H
2-2
TH-A75R
Audio input/output section
Power supply section
TO CN203 OF
LVA10375-A1
(System control)
TO CN703 OF
LVA10379-A1
(Power amplifier)
LVA10378-A1
Power board
D101
LVA10377-A1
DSP board
CN591
CN171
CN101
2
1
F101
9
2
TUNER_L
SCART_L
TUNER_R
SCART_R
12
14
L101
L102
+37V
5
AC IN
L103
6
+37V
8
+22V
11
-22V
13
-37V
15
3
+22V
T101
POWER
TRANS.
7
13
15
HP_L
17
HP_R
18
11
10
4
4
12
-22V
14
-37V
5
5
J5531
IC101
SWITCH
REG.
3
6
S_MUTING
19
S_BASS
21
L
+12V
4
STB/DBS IN
Q181,Q182
Q187
IC557
Amp.
2
-12V
IC102
-IC104
PHOTO
COUPLER
R
1
PROTECT
74-77
4
62
L
Q188
TO CN201 OF
LVA10375-A1
(System control)
IN_L
IN_R
VCR IN
69-72
R
CN172
+12V
1
TO CN701 OF
LVA10379-A1
(Power amplifier)
1
2
+7V
IC540
Amp.
IC560
Amp.
7
OUT_L-
Q172
REG.
OUT_L+
5
-7V
CN592
9
16
31
38
6
-12V
OUT4_L
OUT4_R
7
7
FAN-ON/OFF
8
8
FAN-CTL
8
9
AMP-PON
OUT_R-
OUT_R+
10
BEAT CUT
Q5711
Mute control
Q5731
Mute control
IC544
Amp.
IC562
Amp.
9
4
11
DVD-PON
Q171
REG.
12
SYS-PON
IC551
8CH
VOLUME
10
15
32
37
13
F2
14
F1
OUT_SL
OUT_SR
OUT4_SL
OUT4_SR
4
3
15
-VDSP
16
B5V
Q5732
Mute control
Q5712
Mute control
IC546
Amp.
IC564
Amp.
5
T121
POWER
TRANS.
FROM/TO
DSP
4
TO CN202 OF
LVA10375-A1
(System control)
12
11
4
IC121
SWITCH
REG.
34
33
OUT_C
OUT_SB
OUT4_C
OUT4_SB
6
2
12
1
2
IC171
REG.
Q174
Q175
CN
173
2
1
3
Q176
Q177
DVD3.3V
13
Q5733
Mute control
IC548
Amp.
Q5713
Mute control
IC566
Amp.
3
DVD3.3V
4
DVD5V
13
35
16
D5V
6
Q161
REG.
Q165
REG.
1
OUT4_LFE
OUT_LFE
7
M9V
8
M9V
Q5734
Mute control
Q5714
Mute control
26
25
27
Q5701
Q5702
Mute control
Q163
Q164
MUTING
3
Q5661-Q5663
BASS BOOST
VOL_DAT
VOL_STB
VOL_CLK
14
Q162
REG.
Q166
REG.
TO
FAN MOTOR
J5521
STB/DBS
DUGITAL
IN
DIGITAL_I/O
CN174
1
IC122
IC123
PHOTO
COUPLER
Q178
Q183
REG.
Q184-Q186
DSP section
LVA10377-A1
DSP board
CN591
DSP_RST
DSP_REDY
DSP_COM
DSP_STAT
Q531
29
Power amplifier section
15,40
42,43
28
2,3,44
143,144
45,46,48
49,52
41
27
26
X521
OSC
12.5MHZ
55
2
TO CN592 OF
LVA10377-A1
(Audio input/output)
FROM/TO
Audio
input/output
Amplifier board
DSP_CLK
25
X531
OSC
6.14MHZ
+12V
11
84
J702
IC531
DSP MICOM
Q532
12
13
RY701-RY704
IC521
DSP
IC532
CN701
IC701
WOOFER
AMP.
3
IC525-IC527
SDRAM
2
LFEOUT
LFE
1
8
4
17
88
MUTING
IC533
SB
2
1
SR
3
1
47
FROUT
6
IC524
FLASH-ROM
SL
4
FROM/TO
CN203 OF
LVA10375-A1
(System control)
54,56,66
18,57
64-67
26
28
4
5-7,10
12-16
FLOUT
C
4
15-19
44
6
L
7
25
16
14
31
R
8
FCOUT
2
OUT_SR
7-13
21
15
30
IC721
MAIN
AMP.
OUT_SL
29
43
OUT_LFE
7
9
J701
IEC958
28
1
IC511
CODEC
OUT_C
26
3
1
OUT_SB
SROUT
6
IC592
REG
TO CN204 OF
LVA10375-A1
(System control)
6,41
6
A3.3V
10
D5V
D5V
4
5
DIGITAL_I/O
32
SLOUT
4
IN_L
CN702
33
Q751,Q753-Q757
PROTECTOR
IN_R
PROTECT
1
IC593
REG
SBOUT
2
D1.9V
12
1,2,4
3
RELAY_CTL
2
OUT_L+
Q731,Q732
RELAY CTL.
11
1
IC512
DAC
Q761
LOW VOLTAGE DET.
OUT_L-
SAFETY
6
10
OUT_R+
9
TO CN171 OF
LVA10378-A1
(Power supply)
OUT_R-
VOL_DAT
VOL_STB
5-8
VOL_DAT
VOL_STB
24
23
22
CN703
14
PROTECT
VOL_CLK
VOL_CLK
LVA10379-A1
A
B
C
D
E
F
G
2-3
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