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
Summary of Contents for CFD-CD777S MK2
Page 64: ...64 CFD CD777SMK2 MEMO ...
