Read Sony CX-LFA880 / XR-FA880DVD Service Manual online
20
20
CX-LFA880
CX-LFA880
7-3. SCHEMATIC DIAGRAM — MAIN SECTION —
•
See page 35 and page 15, 16 of Supplement-1 for IC Block Diagram.
•
See page 33 for Waveforms.
•
See page 2 of Supplement-1 for IC Pin Function Description.
1
2
3
TO FRONT
BOARD
CN601
A
(Page 25)
TO AMP BOARD
CN108(Page 30)
H
IC B/D
IC B/D
IC B/D
NO.
VOLTAGE CHART
IC501
IC501
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
11
12
13
14
15
16
VOLT
4.9
4.9
4.9
4.9
4.9
0
0
0
0
0
–
0
0
0
0
–
5.0
0
0
0
0
0
4.8
0
0
0
NO.
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
VOLT
4.9
0
0.3
0
0.2
4.9
0.2
5.1
4.9
0.2
5.1
–
5.0
5.0
5.0
2.8
3.8
3.8
0.4
5.0
5.0
2.8
3.8
3.8
0.4
NO.
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
VOLT
4.9
5.0
5.0
0
5.0
3.3
2.4
3.3
2.4
0
3.0
2.8
2.8
–
0
0
4.9
4.9
4.9
0
4.9
3.2
3.2
NO.
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
VOLT
3.4
4.8
0.3
4.8
0.3
0
4.9
4.9
4.9
0
0
0
4.9
0
4.9
0
0
0
4.9
4.9
4.9
4.9
4.9
-32.4
-32.9
-38.6
NO MARK : FM
< > :TAPE REC
< > :TAPE REC
4.5
0
8.8
17.0
10.8
11.0
9.9
16.3
17.8
18.0
0
0
5.1
5.1
17.6
0
0.7
9.9
4.1
4.7
5.0
5.0
5.0
5.0
9.9
4.1
9.9
4.7
2.6
0
4.9
0
0
0
0.6
0.6
4.7
9.2
5.3
0
5.2
5.2
9.6
0
0
5.2
5.2
0
0
5.1
5.2
0
9.6
0
0.3
12.4
0
4.9
12.3
0
12.4
12.4
0
0
5.0
0.3
11.3
5.7
10.6
10.3
0.2
0.7
0.7
0.6
0
5.0
5.0
4.9
5.0
4.9
4.2
4.9
4.9
2.6<-7.0>
2.6
<-7.0>
<-7.0>
2.6
<-7.0>
0<0>
0<0>
0<0>
0<0>
0<0>
0<-14.9>
0<-14.9>
0<-14.9>
0<-0.7>
0<-0.7>
2.9<-11.1>
2.9
<0>
2.9
<-0.7>
2.9
<0>
9.6<2.7>
9.5 <0.4>
9.6<2.2>
9.6
<9.0>
9.6
<9.0>
9.5
<2.3>
0<0.8>
0
0.7
0
0.7
1.7 <0.8>
0
0
0
0
1.2
2.2
1.7
2.3
1.2
0
0
1.2
2.0
7.1
1.4
2.0
1.2
0
0
0
0.7<0>
0.7
<0>
0
5.0
5.0
5.0
0
5.0
5.0
4.9
4.9
4.3
4.3
4.3
4.3
5.0
5.0
0
0
5.2
4.9
4.9
2.5
2.5
2.5
2.5
2.5
2.6
2.5
0
2.3
2.5
2.5
2.5
2.6
2.5
2.5
2.5
2.6
2.6
2.6
2.5
2.6
5.2
DOWNLOAD
PORT
TO MPEG
BOARD
J701
TO TUNER PACK
TO
MIC
BOARD
CN203A
TO AMP BOARD
CN102(Page 30)
TO MPEG BOARD
JD701
TO AMP BOARD
CN106
SPEAKER
IMPEDANCE
USE 6
Ω
TO PT BOARD
FW901
TO MPEG BOARD J702
IC501
IC503
IC502
IC401
IC402
IC101
IC201
IC301
IC102
B
C
D
E
F
G
I
MD IN
+
L
R
–
–
+
–
+
DIGITAL OUT
OPTICAL
MAIN BOARD
HEAD
(PLAYBACK/ERASE)
L-CH
R-CH
ERASE
HEAD
(Page 30)
(Page 23)
(Page 25)
REC/PB
HEAD
(Page 23)
(Page 23)
(Page 31):E,SP,MY MODEL
(Page 32):AUS,AEP MODEL
AEP
AUS
E
24k
k
k
k
SYSTEM CONTROLLER
RESET SWITCH
EPROM
TAPE REC/PB AMP
MUTE
MUTE
Q215
REC DETECT
REC/PB SWITCH
Q201-Q205
REC/PB SWITCH
REC/PB SWITCH
Q212, Q213
BIAS OSC
Q210, Q211
MUTE
INVERTER
+9V REG
SWITCH
SWITCH
LED DRIVE
Q504-506
+5V REG
SWITCH
+5V REG
SWITCH
CURRENT
DETECT
+10V REG
+9V REG
-33V REG
RELAY DRIVE
MIC AMP
ECHO
Q401, Q402
MIC MUTE
Q403
BUFFER
BUFFER
BUFFER
MUTE SWITCH
SWITCH
POWER
CONTROL
POWER
CONTROL
MIXER AMP
SOUND PROCESSOR
Ver. 1.1
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