Audio/Video Section - Sony MCE-CX80K Service Manual

— AUDIO/VIDEO SECTION —
MPEG VIDEO/AUDIO DECODER,
VIDEO SIGNAL PROCESSOR
DATA, BCK,
LRCK, C2PO
DATA CD-DATA
B
4
LEVEL
BCK CD-BCK
3
SHIFT
(Page 14)
CD-LRCK
LRCK
IC501 5
C2PO CD-C2PO
6
D-RAM
IC507
MWE
13 38
WE
RAS0
RAS 14 42
CAS
UCAS 28 40
LCAS 29
A0 – A8 A0 – A10
D0 – D15
D0 – D15
PROGRAM ROM
IC506
MCE
CE 22 37
A0 – A10
D0 – D7
D8 – D14
16
MPEG AUDIO
IC505 AUDIO INTERFACE
DECODER CIRCUIT
MPEG
SYSTEM
MPEG VIDEO
DECODER
CD-ROM
VIDEO PROCESS
INTERFACE
DECODER CIRCUIT
CIRCUIT
93
BUFFER
Q502
HCK
117
HD-IN
119
HD-OUT
112
CPU HSEL
121
INTERFACE
HINT
114
HRDY
113
RESET
60
SWITCHING
RREF 72
Q501
S501
COLOR SYSTEM
NTSC
AUTO
PAL
(SELF DIAGNOSIS)
(Page 14)
A
DA-DATA DATA
110 18
INPUT
DA-BCK BCK
111 17 INTERFACE
DA-LRCK LRCK
CIRCUIT
108 19
DA-XCLK
86
768FSO
21
OSC
384FSO
BUFFER 20
IC504 MCKO
4
Y-OUT
69 TIMING CONTROL/
CLOCK GENERATOR
C-OUT
75
VCK-IN
106
24
X503
27MHz
DF LATCH 22
77
DEVICE RESET
AMP ON 100
45 BUS
LO BOOST 47
33 CLK1
48
AUDIO MUTE
DATA1O
31
32 DATA1I
89
MIC CTRL
21 CL680 SEL
20 CL680 HINT
23 CL680 HRDY
24 CL680 RESET
J701
35 XVLEVEL DOWN
MIC1
SYSTEM CONTROLLER
IC502 (2/3)
J702
MIC2
94 MUSIC VOL
34 RTS1
B.P.F.
93 NT/PAL
B.P.F.
D502
73 TEST LED
40
SHARPNESS
VMUTE 65
15 13
X501
10MHz
15 15
DIGITAL FILTER,
D/A CONVERTER
IC509
DIGITAL
VOUTL
14
FILTER, LOW-PASS
D/A
LOW-PASS
NOISE FILTER
CONVERTER
FILTER VOUTR
SHAPER IC101
11
CIRCUIT
MODE
CONTROL
1 9 8 7 10
LINE BOOST
AMP AMP
IC151 IC152
AMP ON
BOOST
SWITCH
SWITCH
Q151
Q152
R-CH R-CH
AMP ON
SWITCH CONTROL
Q181,182
BOOST
SWITCH CONTROL
Q183,184
MIX AMP
MIC AMP +
IC703(1/2)
IC702 (1/2)
RV701
MIC LEVEL
MIC AMP DIGITAL ECHO
IC702 (2/2) IC701
RV703
VIDEO SHARPNESS VIDEO VIDEO
BUFFER FILTER BUFFER BUFFER
Q301 Q307 Q308
Q302
VIDEO
BUFFER
Q304
SHARPNESS
CONTROL SWITCH
Q306
C
BUFFER
Q303
MCE-CX80K
• SIGNAL PATH
: CD PLAY (AUDIO)
: CD PLAY (VIDEO)
• R-ch is omitted due to
same as L-ch.
R-CH
RESET
C
(Page 14)
DATA, CLK
D
(Page 16)
LINE
+
AMP L
IC153
MUTING
R-CH R
Q153
J151
R-CH R-CH
AUDIO OUT
MUTING CONTROL
SWITCH
Q905
CD POWER
E (Page 16)
+ MIC AMP
IC703 (2/2)
MUTING
Q701
VIDEO
Y/C MIX
AMP
Q310
Q452
J302
VIDEO OUT
VIDEO
MUTE
Q454
Y
Y
AMP
Q451
Y
MUTE
Q453
C