JVC XV-525BK, XV-421BK, XV-523GD, XV-521BK Diagram
Block diagrams
DVD Servo control and DSP section
(SHEET 5,6)
TX
IC503
TC74VHC00FT
IEC958
159
IC502
SYSCLK
3
180, 182
184~189
STD0~7
85
178
59
27
/WR
60
/RD
IC505
16M SDRAM
IC504
KM416S1120DT-G8 KM416S1120DT-G8
16M SDRAM
27MHz
NAX0393-001X
TO CN701
SHEET 4
VD0~7
DA_DATA1
163
142, 143
145, 148
150, 152
13 1771615
2~4
IC501
ZIVA3-PE0
AV DECODER
207
208
/WR
/RD
WAITODC
31, 32
154, 155
VCLK
6
8~11
34~36
29 39~46
202
~204
IC311
IC554
VIDEO
MC44724AVFU
ENCODER
WAITDEC
IC312
TC7SH08FU
TC7SH32FU
YOUT
COUT
CN503CN502
CVBS
PbOUT
ZIVA WAIT
TO CN601
SHEET 3
PrOUT
IC321
IC322
TC7WH74FU
XV-521BK/523GD/525BK/421BK
V+5V
TC74VHC00FT
U2SDT S2UDT
+2.5V REG
SCLKO REQ
BUSY
IC555
CPURST
CPUD0~7 CPUA0~2
ODC
IC301
MN103S13BDA
(Optical disc controller)
FEPEN CPSCK SDOUT SLEEP
BDO OFTR TGBAL
TBAL TE RFENV
FBAL FE TG AS
ARF+ ARF-
TESTSG JLINE
5~7, 16, 18
20, 22, 24
30, 31
47~50
IC101
AN8702FH
39~41, 46
53, 54
57~60
62, 63
11~14
EFP
(Front end processor)
TD TA F1 F2
F1CD F2CD
T1CD T2CD
RF+ RF-
37, 38
40~43
45~55
88
112~115
4CH Driver
CN101
57
62, 63
68~70
IC271
M56788FP
72~74
PLLOK
63
DAT0~3
ADSC
1~3, 8, 9, 26, 37
42~44, 47, 49
99, 100
5, 6, 51
SPDRV, TDOFS
FODRV, TRDRV
36, 37
15, 31, 32
34, 35, 42
TRSDRV
3, 17, 30
9, 10, 14
77~80
85~89
IC201
MN67706ZY
(Digital servo controller)
84
52, 98
SM+ SM-
FM+ FM-
ADSCEN
CIRCEN
CPSCK
EPDO
EPDI
EPSK
T+ T-
F+ F-
PHOTO
SDOUT
ADSCIRQ
EPCS
3~6
IC403
EPROM
WAIT
1
53, 59, 70
72, 76
62~65
11
AK93C65AF
57, 58
67~69
IC401
Unit CPU
MN102L25GDZ1
82
23, 24
M9V
D5V
CN501
55, 56
70, 72
7813~16
26~33
35~424493~100
OSCI/O
Z3V
S5V
X401
D3V
DECIRQ
2~11
15, 17, 19
CPUA1~20
CPUD0~7
D2.7V
REG
D2.7V
CPUD0~7 CPUA0~17
21, 24, 26
28, 30
34~43
16M ROM
Q1
LSIRST
IC402
MSM531622F
LVB10126-A1
FROM CN10
OF FXL-V6-1
SHEET 4
FROM CN706
2-1
XV-521BK/523GD/525BK/421BK
DC Regurator section (SHEET 2)
TO CN832
SHEET 1
FL ON/OFF
F1F2-VDISP
CN971
Q951,Q952
B5V
TO CN704
SHEET 4
D5V
CN961
M9V
D3.3V
Q964,Q965
+3.3V REG.
TO CN705
SHEET 4
B5V
P.ON
CN951
+12V
P.MUTE
-12V
D951
AC-DC
C960
D950
Q953
-30V REG.
AC-DC
D901
AC-DC
IC953
+5V REG.
NJM78M05FA
L951
D952
C963,C964
IC951
+5V REG.
PQ05RD21
L952
D953
AC-DC
C965,C966
T901
QQS0028-001
TRANSFORMER
D904
C914
AC-DC
D954
AC-DC
AC-DC
D908
L955
C979,C997
D910
Q966
D972,D973
C995,C996
MUTE DETECTION
Q991
D956
AC-DC
MODE SW.
L957
C982,C984
PC902
PC123F
D957
AC-DC
L959
C987,C989
2-2
LVA10112-A1
S1WB/A/60-4101
L901
LINE FILTER
QQR1105-001
AC IN
IC901
REGURATOR
STR-G6651
SWITCHING
FEED BACK
PC901
PC123F
System control and Audio out section (SHEET 4)
TO CN801
SHEET 1
TO FML-121-1
TO CN501
SHEET 6
FROM CN961
SHEET 2
FROM CN502
SHEET 5
FLRST,STANDBY IND
FLCK,FLDATAI/O
FLCS,REMO
POWER SW
CN703CN702CN701
AOUT
BOUT
MOTOR
DRIVER
IC712
BA5208A
CLOSE, OPEN
M9V
D5V
Z3V
D3.3V
CN706
D3.3V
D5V
M9V
CN704
D3.3V
DA_DATA1
TX
MT0
MT1
2, 37, 8
34
35
40
CONTROLLER
41
18 - 26
37, 38
U2SDT
S2UDT
SCLK
REQ
BUSY
CPURST
CS3
RSTE
SCK
RXD
/NTSC
6, 27
45 - 49
SYSTEM
IC701
MN101C12GHA
99
80
39
AVCI, AVCO
77
78
87 - 91
DAC
CONTROL
RESET
33
12, 13
50 - 53
64
1, 5, 9
25 - 27
2
FS2
RESET
IC702
IC-PST9140-T
OSC
X701
10MHz
PDO
28
DAC
IC703
MN35503
F.RESPONCE SW.
Q711,Q741,Q751
23
10, 13
16, 19
EEPROM
IC791
AK93C45AF
EEDI/O
EECS
EECK
PLL BLOCK
D731-D733
L731
XIN
LPF
IC741,IC751
NJM4580D
1
D3.3V
2
COMPULINK
IC792
TC74HC08AP
XV-521BK/523GD/525BK/421BK
LVA10111-A1
AV
Q709
3
P.ON
MUTE
Q743,Q753
Q744, Q754
D791,D792
TRANS
T601
+12V
-12V
P.MUTE
MUTE
Q791
J702
B5V
J691
LOUT
ROUT
J601
R
L
OPTICAL
DIGITAL OUT
J703
AV
COMPULINK
FROM CN951
SHEET 2
POWER
SUPPLY
CN705
Ver. E/EN/EE/EV/B
only
AV O UT
ANALOG
AUDIO OUT
COAXIAL
DIGITAL OUT
OPTICAL
DIGITAL OUT
FL Driver section (SHEET 1)
FROM CN971
SHEET 2
OPERATION
SWITCH
S821
OPERATION
SWITCH
S831~S835
-VDISP
F1
F2
CN832
B5V
AIN2
11
AIN0
16, 17
6
AIN5
OPERATION
SWITCH
S811
9
FL DRIVER
IC802
M35500BGP
23 - 43
S1~S14
1G~7G
FL DISPLAY
RESET,CS,SIN,SOUT,SCLK
5
12 - 15
10
DI801
AIN1
REMO
1
REMOTE
CONTROL
RECEIVER
IC801
GP1U271X
LVA10112-A2
FW802
TO CN703
CN801
SHEET 4
LVA10112-A3
STANDBY IND
POWER SW
FW841
POWER
SWITCH
S801
LVA10112-A4
OPERATION
S842, S843
STANDBY
INDICATOR
D801
SHUTTLE
KNOB
S841
or
SWITCH
XV-421 only
2-3
XV-521BK/523GD/525BK/421BK
Video out section (SHEET 3)
TO CN503
SHEET 6
CN601
2
9
7
3
5
1
Cr
Cb
Y
C
CVBS
V+5V
4MHz LPF
L601, L602
4MHz LPF
L611, L612
6MHz LPF
L621, L622
3.58MHz BPF
L631, L632
3.58MHz BPF
L641, L642
Q621
Q631
Q641
LVA10111-A1
Q601
Q611
S691
COMPOSITE
-Y/C SW
456
123
Y
C
J601
1
Cr
4
Cb
7
Y
Ver. E/EN/EE/EV/B only
J691
C/GND
15
Y/COMPOSITE
19
J601
12
S-VIDEO
13
OUT
J601
8
COMPOSITE
VIDEO OUT
COMPONENT
VIDEO OUT
2-4
Standard schematic diagrams
System control circuit
7
6
5
XV-521BK/523GD/525BK/421BK
4
3
2
1
Digital audio signal path
Audio signal path
BCDEFGH I JA
2-5
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