Sony CX-LFA880 Service Manual ▷ View online
9
CX-LFA880
Pin No.
Pin Name
I/O
Description
60
MWEB
O
S-RAM write enable signal output
61
MRAS1B
O
S-RAM low address strobe signal output
62 to 65
MA0 to 3
O
S-RAM address bus
66
DVDD3
—
Power supply terminal (+3.3V)
67
DVSS
—
Ground terminal
68 to 72
MA7 to 8
O
S-RAM address bus
73
MA9
—
Not used
74
MA10
—
Not used
75
MOEB
O
S-RAM output enable signal output
76
MCASUB
O
S-RAM column high address strobe signal output
77
MCASLB
O
S-RAM column low address strobe signal output
78 to 83
HADR7 to 12
O
Flash memory address bus
84
C2F
O
C2F signal output to the video DAC encoder
85
ROMXA
O
CD DATA signal output video DAC encoder
86
ROMCK
O
BCK signal output video DAC encoder
87
LRSY
O
LRCK signal output to the video DAC encoder
88
DVDD1
—
Power supply terminal (+3.3V)
89
DVSS
—
Ground terminal
90
EMPH
—
Not used
91
AVRA01
O
DRFO signal output to the video DAC encoder
92
AVACK0
O
DACK signal output to the video DAC encoder
93
AVDACK
O
DACK signal output to the video DAC encoder
94
AVSCTB
O
DBGN signal output to the video DAC encoder
95
AVERRB
O
DFFR signal output to the video DAC encoder
96 to103
AVD0 to 7
O
DVD (RF) signal output to the video DAC encoder
104
EFMOUT
—
Not used
105
PCK
—
Not used
106
DVDD0
—
Power supply terminal (+3.3V)
107
DVSS
—
Ground terminal
108
VCOCTL
I
FPD/PPD signal input
109
PPDO
O
PPD signal output
110
FPDO
O
FPD signal output
111
LF1
I
FPD/PPD signal input
112
LF2
I
FPD/PPD signal input
113
LF3
—
Not used
114
PCN
—
Not used
115
PISET
I
Not used in this set. Fixed at “H”.
116
FISET
I
Not used in this set. Fixed at “H”.
117
CDFR
I
Not used in this set. Fixed at “L”.
118
DVDFR
I
Not used in this set. Fixed at “L”.
119
AVDD2
—
Power supply terminal (+3.3V)
120
AVSS2
—
Ground terminal
121
DVCP1
I
Not used in this set. Fixed at “H”.
122
JVCPC1
I
ADJV signal input
123
JVAO
O
ADJV signal output
124
JVAN
I
JVR signal input
125
JVRVO
O
JVR signal output
126
AVDD3
—
Power supply terminal (+3.3V)
127
AVSS
—
Ground terminal
10
CX-LFA880
Pin No.
Pin Name
I/O
Description
128
VPDO
O
VPD signal output
129
VRPFR
I
Not used in this set. Fixed at “H”.
130
VCOCTL
I
VPD signal input
131
DVDD0
—
Power supply terminal (+3.3V)
132
DVSS
—
Ground terminal
133
DVDD2
—
Power supply terminal (+3.3V)
134
XIN
I
System clock input (16.9344MHz)
135
XOUT
O
System clock output (16.9344MHz)
136
DVSS
—
Ground terminal
137
X16MIO
O
AMCLK signal output to the video DAC encoder
138
TEST2
—
Ground terminal
139
DVDCKIO
—
Ground terminal
140
SYEO(EFLO)
—
Not used.
141
FSEO(FSX)
—
Not used.
142
DOUT
O
SPDIF CD signal output
143
DVDD1
—
Power supply terminal (+3.3V)
144
DVSS
—
Ground terminal
145 to 148
MD8 to 11
I/O
S-RAM data bus
149
DVSS
—
Ground terminal
150 to 153
MD12 to 15
I/O
S-RAM data bus
154
DVSS
—
Ground terminal
155
DVDD3
—
Power supply terminal (+3.3V)
156 to 159
MD0-3
I/O
S-RAM data bus
160
DVDD3
—
Power supply terminal (+3.3V)
161 to 164
MD4 to 7
I/O
S-RAM data bus
165
DVDD1
—
Power supply terminal (+3.3V)
166
DVSS
—
Ground terminal
167
DVD CD
O
DVD/CD change control signal output
168
DEFECTO
O
RFAMP tracking hold control signal output
169
WRO
O
WRO signal output
170
XHTR
O
Tracking band control signal output to the RF AMP
171
LDON1
O
APC2 laser control signal output to the RF AMP
172
LDON2
O
APC1 laser control signal output to the RF AMP
173
TESIO
—
Not used.
174
HFLIO
—
Not used.
175
DVDD0
—
Power supply terminal (+3.3V)
176
DVSS
—
Ground terminal
11
11
CX-LFA880
CX-LFA880
1-1. BLOCK DIAGRAM — AUDIO SECTION —
PANEL
POWER
SECTION
A
MPEG2
SECTION
B
: DVD(AUDIO)
• Signal Path
• R-CH is omitted due to same as L-CH
: AUDIO
: TUNER
: MD IN
: REC(TAPE)
: MIC
: PB(TAPE)
JK201
R-CH
L-CH
L
R
MD IN
MIC
ANTENNA
AM
FM 75
Ω
COAXIAL
L
R
SPEAKER
IMPEDANCE
USE 6
Ω
PHONES
J202
R-CH
D OUT
D IN
CL
CE
TUNED
MUTE
STEREO
RDDA
ROCK
MIC AMP
5
7
IC402(1/2)
Q401,402
MIC MUTE
Q403-405
BUFFER
MIC AMP
2
1
IC402(2/2)
MIC IN
SCK
DISK
31
3
SLT
4
SDI
5
23
IC401
ECHO
ECHO
TUCE
SDAT/ROMDA
12
TUND
13
RMUTE
1
STE
11
RDDA
21
RDCK
46
RMUT
2
RPHD
3
BIAS
4
TUCK
20
TUDI
18
TUDO
19
E-CLK
57
E-STB
52
E-DATA
58
53
SCK/ROM CK 54
AMUTE 59
TSOL 5
TMOT 6
TCNT 7
REPT 31
HDPN 30
IC501(1/2)
SYSTEM CONTROLLER
LOUT
SDA
21
SCL
22
BASSOL
7
LINT1
31
LINT3
29
LINT2
30
IN4
28
VARL
6
2
3
25
RECOUTL 27
IC101
SOUND PROCESSOR
SDA
5
SCL
Q105
MUTE CONT
Q102
MUTE
Q199
INVERTER
Q313
+10V REG
Q212
Q213
Q213
BIAS
USC
Q202,207
REC/PB SWITCH
Q209
MUTE
Q201,204,206
REC/PB SWITCH
Q653,654
MOTOR DRIVER
Q651,652
SOL DRIVER
Q215
REC DETECT
Q210
MUTE
16
+VM
+10V
+VDD
Q308
PROTECT
SWITCH
Q350-352
FAN CONT
FAN
Q303,304,354
DC PROTECT
Q104,301
OVER LOAD
DETECT
Q319
MUTE
SWITCH
Q314,317
CURRENT
DETECT
Q353,355
FAN CURRENT
DETECT
6
IC503
EPROM
RECO
14
CH I/A
REC IN
PREO
1
16
3
IC201
TAPE REC/PB AMP
STBY
13
CH1
IN
IN
CH1
OUT+
11
4
IC103
POWER AMP
IC102
MIXER AMP
J206
R-CH
R-CH
R-CH
R-CH
R-CH
R-CH
R-CH
L-CH
REC/PB
HEAD
R-CH
R-CH
PACK
RECF
RECR
HDPLY
TCNT
MOT
SOL
TUNER UNIT
TAPE
MECHANISM
DECK
12
12
CX-LFA880
CX-LFA880
1-2. BLOCK DIAGRAM — MPEG SECTION-1 —
• Signal Path
: DVD(RF)
: DVD(DIGITAL)
: DVD(AUDIO)
U707
AV DECODER
SERVO CONTROLLER
HOST INTERFACE
U709
RF AMP
FOCUS/TRACKING
ERROR AMP
EFNINP
10
EFNINN
12
LDON2
172
LDON1
171
PREC
4
RFPH
5
RFBH
6
BHC
19
TE
7
TEC
21
FE
8
WO
20
LDON1
171
LDON2
172
XHTR
170
FO
25
RST
26
DEFECTO
168
TBAL
27
FBAL
28
SGC
29
TSTD1
23
TSTDO
24
DVD CD
167
AD1
1
VREF
22
AD0
2
SLCO
30
SPDO
31
TDO
32
HDA
T1-7
HADR0-12
FG (PP1)
SPD FG
HA0-12
HA0-7
INT DEC
RDY
LSI RST
RD
WR
SC DVD
BE01
36
HIROB
37
HW
AITB
38
HRESB
39
HRDB
40
HWRD
41
HCSB
42
HDA
TO
43
SDO
33
X16MIO 137
C2F 84
ROMXA 85
ROMCK 86
LRSY 87
AVRAOI 91
AVACKO 92
AVDACK 93
AVSCTB 94
AVERRB 95
DO0T
DO0T
142
AVD0-7
MOEB 76
MA10 75
MCASUB 77
MA0-8
MRAS1B 61
MWEB 60
XIN 134
XOUT 135
MD8-15
MD0-7
46-53
54-59,78-83
96
-
103
62-65
68-72
68-72
145-148
150-153
156-159
161-164
150-153
156-159
161-164
Y701
16.9344Mz
CASH
28
OE
27
CASL
29
A0-8
RAS
14
WE
13
IO8-15
IO0-7
16-19
22-26
22-26
31-34,
36-39
2-5,
7-10
U708
S-RAM
DFFR
DBGN
DCLK
DACK
DRFO
LRCK
BCK
CD DATA
C2F
AMCLK
DATA&ADDRESS BUS
RFOP
55
RFON
54
LDON2
22
LDON1
21
RREC
38
PH
47
BH
46
TE
40
FE
39
WO
41
LDON1
21
LDON2
22
XHTR
31
FC
34
RST
33
TH
30
TEBL
36
FEBL
35
SGC
32
DVD/CD
26
GU
25
DVD/TE
27
CP
37
CAP
1
PD2
5
PD1
4
PD4
7
PD3
6
TIN2
14
TIN1
13
FIN1
9
FIN2
10
DVD/CD
26
DPD/TE
27
LDS1
16
LDS2
18
LDD1
15
LDD2
17
55
CAO 62
PFP
61
55 RFN
59
Q711,712
VR CONTROLLER
(CD)
Q710
CD/DVD
SELECTOR
Q713
VR CONTROLLER
(DVD)
Q714
POWER
CONTROLLER
(DVD)
Q715
POWER
CONTROLLER
(CD)
VIN1-B 18
VIN1+A 17
VIN1+B 19
VIN2+ 22
VIN3+ 25
VREF-IN 30
VIN4+ 31
VIN2- 21
VIN4- 32
VIN3- 24
5
6
7
U705(2/2)
AMP
VOL3+
8
VOL3-
9
VOL4+
7
VOL4-
6
VOL0+
5
VOL0-
4
VOL1-
13
VOL1+
12
VOL2+
10
VOL2-
11
U705(1/2)
AMP
2
3
1
FWD
OPN
CLS
1
REW
2
OPEN SW
TOP
TCL
CLOSE SW
MLD2
MLD1
SLED+
SLED-
SP+
SP-
F-
OPTICAL
PICK-UP
F+
T+
T-
F-
F+
T+
T-
A
B
C
D
E
F
CD/DVD
VR-CD
VR-DVD
MD
LD-DVD
LD-CD
F-
F+
T+
T-
MPEG2
SECTION
MPEG2
SECTION
MPEG2
SECTION
MPEG2
SECTION
MPEG2
SECTION
PANEL POWER
SECTION
PANEL POWER
SECTION
U706
MOTOR
DRIVER
DRIVER
H
E
I
J
G
D
C
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