Sony CX-LFA880 / XR-FA880DVD Service Manual ▷ View online
33
CX-LFA880
• Waveforms
– MAIN Board –
– MAIN Board –
– MPEG Board –
1
IC501
ej
(XT2)
30.5
µ
s
5.3 Vp-p
1 V/DIV, 10
µ
s/DIV
2
IC501
r;
(X2)
120 ns
5.0 Vp-p
1 V/DIV, 50 ns/DIV
3
Q212 (collector)(TAPE REC)
10.7
µ
s
91.2 Vp-p
20 V/DIV, 5
µ
s/DIV
4
U707
<zcv
(XOUT)
58.9 ns
3.9 Vp-p
1 V/DIV, 25 ns/DIV
5
UD705
<zn/
(XO)
37 ns
3.5 Vp-p
1 V/DIV, 10 ns/DIV
7
UD705
<zm/
(CVBS/C)
H
950 mVp-p
500 mV/DIV, 10
µ
s/DIV
6
UD705
<zn.
(CVBS/G/Y)
(EXCEPT AEP)
H
850 mVp-p
500 mV/DIV, 10
µ
s/DIV
9
UD705
<zmc
(C/B/U)
(EXCEPT AEP)
H
536 mVp-p
100 mV/DIV, 25
µ
s/DIV
8
UD705
<zmx
(Y/R/V)
(EXCEPT AEP)
H
526 mVp-p
200 mV/DIV, 25
µ
s/DIV
6
UD705
<zn.
(CVBS/G/Y)
(AEP)
H
640 mVp-p
500 mV/DIV, 20
µ
s/DIV
9
UD705
<zmc
(C/B/U)
(AEP)
H
592 mVp-p
500 mV/DIV, 20
µ
s/DIV
8
UD705
<zmx
(Y/R/V)
(AEP)
H
530 mVp-p
500 mV/DIV, 20
µ
s/DIV
34
CX-LFA880
IC651 uPD16315GB-3BS
•
IC Block Diagrams
– FRONT Board –
1
2
3
4
5
4-bit latch
24-bit output latch
12-bit shift register
Data selector
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
Serial
interface
OSC
Timing generator
key scan
Display memory
24 bits x 12 words
Key data memory
(2 x 16 bits)
Command decoder
segment driver
Grid driver
Multiplexed driver
39
40
41
42
43
44
LED1
LED2
LED3
LED4
OSC
DOUT
DIN
CLK
STB
KEY1
KEY2
VSS
VDD
SEG1/KS1
SEG2/KS2
SEG3/KS3
SEG4/KS4
SEG5/KS5
SEG6/KS6
SEG7/KS7
SEG8/KS8
SEG9/KS9
SEG10/KS10
SEG20/GRID9
SEG21/GRID8
SEG22/GRID7
SEG23/GRID6
SEG24/GRID5
GRID4
GRID3
GRID2
GRID1
VDD
VSS
SEG11/KS11
SEG12/KS12
SEG13/KS13
SEG14/KS14
SEG15/KS15
SEG16/KS16
VEE
SEG17/GRID12
SEG18/GRID11
SEG19/GRID10
35
CX-LFA880
IC401 BU9262AFS
U704 PCM1748E/2K
– MAIN Board –
– MPEG Board –
SCK
1 2 3
7 8
4
5
6
SERIAL
INPUT
INTERFACE
10
9
BCK
DATA
LRCK
VOUTL
VOUTR
DGND
VDD
VCC
VCOM
AGND
FUNCTION
CONTROL
INTERFACE
SYSTEM
CLOCK
MANAGER
8 TIME OVER
SAMPLING
DIGITAL FILTER
WITH
FUNCTION
CONTROLLER
ENHANCED
MULTI-LEVEL
DELTA-SIGMA
MODULATOR
D/A
CONVERTER
D/A
CONVERTER
OUTPUT AMP AND
LOW-PASS FILTER
LOW-PASS FILTER
OUTPUT AMP AND
LOW-PASS FILTER
LOW-PASS FILTER
ZERO DETECT
POWER SUPPLY
12
11
ZEROL
ZEROR
15
14
ML
MC
16
13
MD
SYSTEM
CLOCK
1
N. C.
2
TESTB
3
SCK
4
SLT
5
SI
6
CLKO
7
CLKI
8
N. C.
9
DSOUT
10
TESTOUT
11
LPF1I1
12
LPF1I2
13
LPF1O
14
ADI
15
ADO
16
GND
32 MIXIN
31 MICIN
30 VDD
29 LCIN
28 RCIN
27 FBOUT
26 LCOUT
25 RCOUT
24 VREF
23 DSIG
22 VOIN
21 LPF2O
20 LPF2I2
19 LPF2I1
18 DAO
17 DAI
SERIAL
CONTROL
CIRCUIOT
CIRCUIOT
CLOCK
A/D
CONVERETR
LOW-PASS
FILTER
INPUT
MIX
SELECTOR
DLYVOL
MIX OUT
REFERENCE
RESET
FBVOL
LOW-PASS
FILTER
D/A
CONVERETR
PROCESSOR
RAM
TEST OUT
CONTROL
LOGIC INPUT
36
CX-LFA880
SECTION 8
EXPLODED VIEWS
NOTE:
•
-XX and -X mean standardized parts, so they
may have some difference from the original
one.
may have some difference from the original
one.
•
Items marked “*” are not stocked since they
are seldom required for routine service.
Some delay should be anticipated when
ordering these items.
are seldom required for routine service.
Some delay should be anticipated when
ordering these items.
•
The mechanical parts with no reference
number in the exploded views are not supplied.
number in the exploded views are not supplied.
•
Abbreviation
AUS
AUS
: Australian model
E
: 240 V AC area in E model.
MY
: Malaysia model.
SP
: Singapore model.
Ref. No.
Part No.
Description
Remark
8-1.
OVERALL SECTION
The components identified by mark 0 or
dotted line with mark 0 are critical for safety.
Replace only with part number specified.
dotted line with mark 0 are critical for safety.
Replace only with part number specified.
Ref. No.
Part No.
Description
Remark
1
2-059-826-01 PANEL (DVD)
2
2-024-357-11 COVER TOP
3
4-951-620-01 SCREW (2.6X8), +BVTP
4
3-970-608-11 SUMITITE (B3), +BV
5
1-763-117-13 FAN,DC
6
9-885-059-35 WIRE (FLAT TYPE)(11 CORE)(EXCEPT AEP)
6
9-885-068-68 WIRE (FLAT TYPE)(15 CORE)(AEP)
7
1-693-619-11 TUNER (FM/AM)(AEP)
7
1-693-620-11 TUNER (FM/AM)(EXCEPT AEP)
8
9-885-060-09 BASE, LOADING
9
9-885-064-85 MPEG BOARD, COMPLETE (SP, MY)
9
9-885-064-86 MPEG BOARD, COMPLETE (AEP)
9
9-885-070-78 MPEG BOARD, COMPLETE (AUS)
9
9-885-070-79 MPEG BOARD, COMPLETE (E)
10
9-885-060-44 VIDEO OUT BOARD, COMPLETE (SP,MY,AUS,E)
10
9-885-060-45 VIDEO OUT BOARD, COMPLETE (AEP)
12
9-885-059-34 WIRE (FLAT TYPE)(16 CORE)
#1
7-685-246-19 SCREW +KTP 3X8 TYPE2 NON-SLIT
#2
7-685-647-14 SCREW +BVTP 3X10 TYPE2 N-S
#3
7-685-646-79 SCREW +BVTP 3X8 TYPE2 IT-3
#4
7-685-647-71 SCREW +BVTP 3X10 TYPE2 IT-3
7
6
9
3
3
10
12
not
supplied
supplied
not
supplied
supplied
a
b
2
#3
#2
#2
#2
#4
#2
#3
#3
#3
#3
#3
#3
#3
#3
a
front panel section
(Refer to the Next Page)
DVD mechanism
deck section
deck section
chassis section
not
supplied
supplied
not
supplied
supplied
not
supplied
supplied
#1
#1
#1
4
A
4
5
1
8
b
Ver. 1.3
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