1616
D-E777/EJ721/EJ725
1
2
3
5
4
6
+
–
7
4
3
2
1
10
11
12
13
14
15
16
9
8
GAIN CTL
RFI
XSTBY
GCNT
VC
IN2+
IN3-
OFFADJ
GND
IV2+
5
6
V-I
V-I
+
–
+
V-I
V-I
+
–
+
+
–
STB CTL
RF BIAS
ADJUST
IN3+
IN2-
IV2-
RFO
AVDD
IV3-
IV3+
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and
1
/
4
W or less unless otherwise
specified.
Note: Note:
The components identi- Les composants identifiés
fied by mark 0 or dotted par une marque 0 sont cri-
line with mark 0 are cri- tiques pour la sécurité.
tical for safety. Ne les remplacer que par
Replace only with part une piéce portant le
number specified. numéro spécifié.
• A : B+ Line.
• Power voltage is dc 4.5V and fed with regulated dc power
supply from external power voltage jack (J401).
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : PLAY
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J : CD
• Abbreviation
CND : Canadian
AUS : Australian
FR : French
HK : Hong Kong
JEW : Tourist
G : German
CH : Chinese
KR : Korean
EE : East European
E13 : AC220-230V area model
E33 : AC100-240V area model
r
Waveforms
IC601 wg
CLOCK
VOLT/DIV : 0.5 V AC
TIME/DIV : 0.5 µsec
IC601 e;
R4M
IC601 rd
MDP
IC601 of
XTAO
IC601 ua
RFAC
IC801 ul
XIN
VOLT/DIV : 0.5 V AC
TIME/DIV : 0.1 µsec
PLAY MODE
VOLT/DIV :0.5 V AC
TIME/DIV : 2 µsec
VOLT/DIV : 0.1 V AC
TIME/DIV : 0.5 msec
VOLT/DIV : 0.2 V AC
TIME/DIV : 20 nsec
VOLT/DIV : 0.5 V AC
TIME/DIV : 0.1 µsec
2.1 Vp-p
1.9 µsec
2.1 Vp-
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