CFD-CD777SMK2
34
34
• Waveforms
– MAIN Board –
2
IC701
ea
(RFO) (CD PLAY MODE)
500 mV/DIV, 500 ns/DIV
3
IC701
rf
(TI) (CD PLAY MODE)
50 mV/DIV, 1
µ
s/DIV
4
IC702
3
(MDP) (CD PLAY MODE)
1 V/DIV, 2
µ
s/DIV
6
IC702
ws
(BCK) (CD PLAY MODE)
2 V/DIV, 200 ns
7
IC702
wg
(XPCK) (CD PLAY MODE)
2 V/DIV, 100 ns/DIV
8
IC702
wk
(RFCK) (CD PLAY MODE)
2 V/DIV, 50
µ
s/DIV
9
IC702
eg
(XTAO) (CD PLAY MODE)
2 V/DIV, 20 ns/DIV
1
IC701
2
(FI) (CD PLAY MODE)
50 mV/DIV, 1
µ
s/DIV
5
IC702
w;
(LRCK) (CD PLAY MODE)
2 V/DIV, 10
µ
s/DIV
1
IC801
ya
(EXT)
2 V/DIV, 100 ns/DIV
– CONTROL Board –
Approx.
150 mVp-p
1.2
±
0.2 Vp-p
Approx.
100 mVp-p
2.6 Vp-p
7.5
µ
s
5 Vp-p
22.8
µ
s
6.2 Vp-p
472 ns
5.3 Vp-p
232 ns
5.4 Vp-p
136
µ
s
4.6 Vp-p
59 ns
4.6 Vp-p
239 ns
• IC Block Diagrams
– MAIN Board –
IC1
CXA1238S
VCO
REGULATOR
FM FRONT-END
AM FRONT-END
MPX
REGULATOR
MONO/STEREO
SELECT
DECORD
AMP
MUTING
AUTO
BLEND
TUNING
INDICATOR
AM IF/
DET
FM IF/
DISCRI
RIPPLE
FILTER
BAND-PASS
MUTE
1
27
28
29
30
24
25
26
21
22
23
18
19
20
16
17
2
3
4
5
6
7
8
9
PLL LPF1
PILOT DET LPF2
PILOT DET LPF2
ST IND/VCO CHECK
L-CH OUT
VCC
R-CH OUT
RIPPLE FILTER
AGC AFC1
10
AGC AFC2
13
FM IF IN
14
AM IF IN
15
BAND SELECT
11
GND
12
TUNE IND
1/2
COUNTER
1/2
COUNTER
PD1
PD2
FM/AM FE OUT
FM GND
FM RF IN
AM RF IN
FM RF
REG
FM OSC
AFC
AM OSC
MUTE
FM DISCRI
GND
PLL LPF2
MPX REG
VCO
Содержание CFD-CD777S MK2
Страница 64: ...64 CFD CD777SMK2 MEMO ...