Sony CX-LFA660 Service Manual page 34

CX-LFA660/LFA770
Q Q
3 7 6 3 1 5 1 5 0
• Waveforms
– BD81A Board –
1 3
IC101 ra (RFACO) IC101 ws (TEO)
(CD Play Mode) (CD Play Mode)
1.0 Vp-p 250 mVp-p
200 mV/DIV, 1 µ s /DIV
100 mV/DIV, 200 µ s /DIV
2 4
IC101 wf (FEO) IC101 uj (XTAO)
(CD Play Mode)
3.5 Vp-p
59 ns
1 Vp-p
50 mV/DIV, 200 µ s /DIV
1 V/DIV, 20 ns /DIV
• IC Block Diagrams
– MAIN Board –
IC501 BA6956AN
T E
L 1 3 9 4 2 2 9 6 5 1 3
1 2
IC601 BD3881FV
28 27 26 25 24
w w w
1 2 3 4
CX-LFA660/LFA770
– FRONT Board –
5
IC801 qd (32.768 kHz)
3.5 Vp-p
30.5 µ s
1 V/DIV, 20 µ s /DIV
6
IC801 qh (10 MHz-EXTAL)
3.5 Vp-p
100 ns
1 V/DIV, 40 ns /DIV
TSD
CONTROL LOGIC
3 4 5 6 7 8 9
23 22 21 20 19 18 17 16 15
BASS BASS
VOLUME TREBLE
LOGIC
CONTROL
VOLUME TREBLE
x a o
. i
12
5 6 7 8 9 10 11 13 14
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– BD81A Board –
IC301 TC94A34FG-002
32 31
33
RAS
CAS 34
OE 35
BUCK 36
CCE 37
38
AD12
AD11 39
40
VDDM
SRMSTB 41
Q Q
3 7 6
42
VDDT
AD10 43
AD9 44
45
AD8
AD7 46
47
AD6
AD5 48
49 50
u 1 6 3
y
34 34
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2 4
8 9 9
30 29 28 27 26 25 24 23 22 21 20
3 1 5 1 5 0 8 9 2
Bus
Switch
Timing
VC0
Generator
51 52 53 54 55 56 57 58 59 60 61
m
c o
.
2
8 9 9
19 18 17
LRCKIA
16
15 BCKIA
14 SDI0
13 LRCKO
12 BCKO
11
SDO0
10 VSS
9
VDDT
8 MIACK
4 9 8 2 9 9
7 MICK
6 MIDIO
5 MILP
4 MICS
3 STANBY
2 RESET
1 VDDP
62 63 64