Sony CX-LFA880 / XR-FA880DVD Service Manual ▷ View online
17
17
CX-LFA880
CX-LFA880
SECTION 7
DIAGRAMS
• Circuit Boards Location
For Schematic Diagrams.
Note:
• All capacitors are in
Note:
• All capacitors are in
µ
F unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics and
tantalums.
tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
•
C
: panel designation.
•
A
: B+ Line.
•
B
: B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
– MPEG Section –
No mark: DVD STOP
– Other Section –
No mark: FM
< >
– MPEG Section –
No mark: DVD STOP
– Other Section –
No mark: FM
< >
: TAPE REC
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: AUDIO
d
: TUNER
N
: MIC
E
: TAPE PLAY
a
: TAPE REC
J
: DVD (AUDIO)
h
: MD IN
L
: VIDEO
c
: DVD (RF)
I
: DVD (DIGITAL)
r
: COMPONENT VIDEO
q
: R,G,B
a
: Y
p
: CHROMA
Abbreviation
AUS
AUS
: Australian model.
E
: 240 V AC area in E model.
MY
: Malaysia model.
SP
: Singapore model.
For Printed Wiring Boards.
Note:
•
Note:
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
f
: internal component.
•
: Pattern from the side which enables seeing.
• Indication of transistor.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
(In addition to this, the necessary note is printed in each block.)
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
Note: The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
PT BOARD
MAIN BOARD
MPEG BOARD
VIDEO OUT BOARD
AMP BOARD
FRONT BOARD
HP BOARD
MIC BOARD
Caution:
Pattern face side: Parts on the pattern face side seen from
(Side A)
Pattern face side: Parts on the pattern face side seen from
(Side A)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Side B)
the parts face are indicated.
B
These are omitted.
C
E
Q
18
18
CX-LFA880
CX-LFA880
7-1. PRINTED WIRING BOARD — MAIN SECTION-1 —
•
See page 17 for Circuit Boards Location.
:Uses unleaded solder.
A
TO
FRONT BOARD
CN601
(Page 24)
B
TUNER
PACK
DIGITAL OUT
OPTICAL
F
TO
MPEG BOARD
JD701
(Page 21)
H
TO
AMP BOARD
CN108
(Page 29)
I
TO
AMP BOARD
CN102
(Page 29)
E
TO
AMP BOARD
CN106
(Page 29)
D
TO
PT BOARD
FW901
(Page 29)
G
TO
MIC BOARD
CN203A
(Page 24)
C
TO
MPEG BOARD
J702
(Page 21)
DOWN LOAD PORT
IC201
IC301
TO
MPEG BOARD
J701
(Page 21)
MAIN BOARD
L
R
+
–
–
+
MD
IN
L
SPEAKER
IMPEDANCE USE 6
Ω
R
HEAD
(PLAYBACK/ERASE)
L-CH
R-CH
ERASE
HEAD
REC/PB
HEAD
1
2
A
B
C
D
E
F
G
H
I
J
K
3
4
5
6
7
8
9
10
• Semiconductor
Location
Ref. No.
Location
D105
G-2
D196
B-2
D197
B-3
D198
B-3
D199
B-3
D201
E-7
D202
D-8
D301
I-6
D302
I-8
D306
I-8
D307
I-9
D308
I-8
D310
H-9
D312
G-2
D314
H-2
D317
G-2
D319
G-4
D320
F-4
D321
F-4
D322
F-4
D323
H-5
D401
H-7
D501
E-9
D502
C-9
D503
D-8
D505
D-8
D507
G-6
IC201
E-8
IC301
H-6
Q212
F-9
Q213
F-9
Q214
F-9
Q215
D-8
Q313
G-3
Q315
I-9
Q316
H-8
Q504
C-8
19
19
CX-LFA880
CX-LFA880
7-2. PRINTED WIRING BOARD — MAIN SECTION-2 —
•
See page 17 for Circuit Boards Location.
:Uses unleaded solder.
IC501
IC503
IC502
IC101
IC102
IC401
IC402
MAIN BOARD
1
2
A
B
C
D
E
F
G
H
I
3
4
5
6
7
8
• Semiconductor
Location
Ref. No.
Location
D106
C-8
D107
C-8
D309
I-3
D313
G-4
IC101
D-5
IC102
E-5
IC401
G-3
IC402
G-2
IC501
B-3
IC502
C-2
IC503
C-3
Q196
B-7
Q197
B-7
Q199
B-7
Q201
F-3
Q202
D-3
Q203
F-3
Q204
F-3
Q205
F-3
Q206
E-4
Q207
E-4
Q208
D-3
Q209
D-3
Q210
D-2
Q211
E-2
Q305
I-3
Q306
I-1
Q307
H-2
Q317
G-4
Q318
G-4
Q319
I-2
Q401
G-2
Q402
G-2
Q403
F-4
Q404
E-4
Q405
E-4
Q502
B-2
Q505
C-2
Q506
C-2
Q507
B-2
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
Click on the first or last page to see other CX-LFA880 / XR-FA880DVD service manuals if exist.