Sony CDX-V7800X Service Manual ▷ View online
25
25
CDX-V7800X
180
184
182
185
185
13
79
82
85
86
90
84
80
14 15 16 17 18
36
2,3,5,6,8,9
11,12,39,40,42
43,45,46,48,49
43,45,46,48,49
53,54,56,58-60
62,64,66,68,70
62,64,66,68,70
72-74,76
30
35
CD-DA
DEC
MPEG
AUDIO
DEC
MEMORY
CONTROL
VIDEO
MIX
DIGITAL
AUDIO
I/F
DEMULTI-
PLEXER
SYNC
CTRL
19-24
27-32
27-32
2-4,6
8-10
21-23
25-29
25-29
1-6
9-20,31
94
89
89
90
11
12
75
1
38
80
32
77
78
79
41
40
100
3
10
9
71
91 - 93
2 - 9
13 - 20
202 - 204
163
167
166
157
158
177
178
208
206
207
169
96,98-100,102,104-406
108,110-112,114,116
118,120-122,124
1
28
24
11
1
4
7
142,143,145
148,150,152
154,155
PROGRAM
STREAM
DEC
LYLICS
DEC
OSD
DEC
MPEG
AUDIO
DEC
128
96
LUMA
PROCESS
CROMA
PROCESS
DAC
CTRL
27 26
25
CD PCMD
CD BCK
CD LRCK
CD C2P0
CD PCMD
CD BCK
ROM CS
RESET
LDQM
MWE
SD CAS
SD RAS
SD CSO
SD CLK
UDQM
CD LRCK
CD C2P0
CD C2P0
DA DATA
DA BCK
DA BCK
DA LRCK
DA XCK
DA XCK
H CS
TV RST
SDA
SCL
CD ON
CDM ON
XTAL
EXTAL
MSC
MSI
MSO
RESET
MSRQ
MCS
A MUTE
BU IN
H R/W
HRD
H WAITE
H INT
CS
R/W
RD
WAITE
INT
H ADDR
0-2
0-2
HDATA
0-7
0-7
H RESET
Q0-7
MADDR 0-18
H DATA 0-7
HADDR 0-2
MPEG DECODER
IC514
VDATA 0-7
A0-10,BA
SDRAM
IC520
DQ 0-15
LDQM
WE
CAS
RAS
CS
CLK
UDQM
MD 0-15
MA 0-11
MD 0-7
MA 0-11
MA 0-18
MD 0-7
MDATA 0-15
CE
A0-18
ROM
IC521
04
HOST
I/F
HSYNC
VSYNC
VCLK
HSYNC
YCRCB
0-7
0-7
VSYNC
CKREF
CKREF
SYSCLK
15
16
Y
CB-CY
RESET
SDA
SCL
VIDEO DAC
IC518
VIDEO AMP
IC551
VIDEO OUT
CD ON
MECHA ON
MSC
MSI
A MUTE
MSO
BU CHECK
MSRQ
MCS
MCS
SYS RESET
POWER
CONTROL
Q513,514
VIDEO 5V
IC519
X511
12MHz
CD SYSTEM CONTROL
IC513(2/2)
X514
27MHz
IC523
CD
SECTION
7
TUNER
SECTION
9
TUNER
SECTION
2
TUNER
SECTION
3
TUNER
SECTION
4
TUNER
SECTION
5
CD
SECTION
6
AUDIO
DSP
Signal path
: CD VIDEO
3-4. BLOCK DIAGRAM — MPEG SECTION —
(Page 23)
(Page 23)
(Page 23)
(Page 23)
(Page 23)
(Page 24)
(Page 24)
26
26
76
77
11
80
4
3
1
59
25
53
4-51
52-55
65
66
62
63
64
23
7
54
24
XOUT
XIN
BAND SW
RESET
NOSE
DOOR
SIRCS
EZ SEL
ROT IN
LSW916
LCD CE
LCD CKO
LCD SO
DOOR IN
ILL ON
KEY1
KEY2
RE1
RE2
BATT
POWER
CONTROL
Q919,920
LCD901
LIQUID CRYSTAL
DISPLAY PANEL
KEY MATRIX
LSW901-907,909-915
S901-904
43
42
RE901
ROTARY
ENCODER
BATT
POWER
CONTROL
Q917,918,921
CE
S04-51
COM1-4
CL
DI
X801
4.5MHz
S802
(FREQUENCY SELECT)
FM50k/AM9k
FM200k/AM10k
S801
RESET
S803
(NOSE DET)
IR
RECEIVER
IC951
CNP902
(REMOTE IN)
SYSTEM CONTROL
IC801(2/2)
LCD DRIVE
IC901
04
Z
tuner unit
(TU601)
(TU601)
DISC IN SW board
DISPLAY board
RELAY board
SERVO board
MAIN board
LIMIT SW board
3-6. CIRCUIT BOARDS LOCATION
CDX-V7800X
3-5. BLOCK DIAGRAM — DISPLAY SECTION —
27
27
•
U
: B+ Line.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f
: AM
J
: CD AUDIO
L
: CD VIDEO
for printed wiring boards:
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
•
a
: Through hole.
• b
: Pattern from the side which enables seeing.
(The other layer’s patterns are not indicated.)
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B)
Pattern face side: Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side: Parts on the parts face side seen from the
(Side A)
(Side A)
parts face are indicated.
VIDEO TEST DISC: HLV-401 (TGIS-3)
Part No.: J-6095-031-A
Playback track No.: 34 (Full field color bar 75%)
Part No.: J-6095-031-A
Playback track No.: 34 (Full field color bar 75%)
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
for schematic diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
%
: indicates tolerance.
•
f
: internal component.
•
C
: panel designation.
27MHz
IC519
4
IC514
<znn
(DA-LRCK)
qs
qa
9
q;
1.5Vp-p
IC518
qa
(CVBS)
1Vp-p
3.5Vp-p
3.5Vp-p
IC514
<znm
(DA-BCK)
qh
qg
qd
qf
• Waveforms (Servo board)
(MODE:CD PLAY)
Approx. 200mVp-p
IC511
qf
(FE)
IC511
wd
(RFDCO)
4
3
1
2
Approx. 2Vp-p
IC511
qh
(TE)
4.8Vp-p
0.8Vp-p
IC516
uj
(LRCK)
IC516
ia
(BCK)
IC516
eg
(MDP)
8
7
5
6
4.8Vp-p
16.9344MHz
IC515
2
(XCK)
3.6Vp-p
1Vp-p
3.2Vp-p
12MHz
IC513
ra
(EXTAL)
0V
0V
22.7µsec
474nsec
7.6µsec
16.9344MHz
IC514
<zn.
(DA-XCK)
2.2Vp-p
1.2Vp-p
27MHz
IC514
<zmm
(VCLK)
3.5Vp-p
IC514
<z,x
(CD-LRCK)
22.7µsec
IC514
<z,v
(CD-BCK)
3.2Vp-p
474nsec
H
28
28
CDX-V7800X
3-7. PRINTED WIRING BOARD — CD MECHANISM SECTION —
• Semiconductor Location
Ref. No.
Location
(D511)
B-5
D515
D-4
(D516)
D-4
IC511
B-2
IC512
D-1
(IC513)
F-6
IC514
C-7
IC515
F-4
IC516
F-2
IC518
F-7
(IC519)
E-7
(IC520)
B-7
(IC521)
D-6
IC523
D-4
(IC551)
D-5
(Q511)
B-2
(Q513)
D-4
(Q514)
C-4
(
) : SIDE B
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