Sony DSJ301 - S2 Sports CD Walkman, Руководство по обслуживанию

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17
D-SJ301
r
Waveforms
IC601
rk
X TAO
VOLT/DIV : 1 V AC
TIME/DIV : 50 nsec
IC601
es
R4M
VOLT/DIV : 1 V AC
TIME/DIV : 200 nsec
2 p-p
16.9 MHz
2.4 p-p
4.228 MHz
1
2
Note:
• All capacitors are in
µ F unless otherwise noted. pF: µµ F 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 specifed.
•
f
: internal component.
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 numéro
number specified. spécifié.
•
A
: B+ Line.
• Power voltage is dc 3 V and fed with regulated dc power supply
from battery terminal.
• Voltages are dc with respect to ground under no-signal conditions.
no mark : PLAY
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production toler
ances.
• Circled numbers refer to waveforms.
•
Signal path.
E
: CD PLAY
• Abbreviation
CND : Canadian
AUS : Australian
FR : French
RF IN
OCL SW
VCC
ROUT
VREF
LOUT
PGND
LIN
BIAS_IN BIAS PWRSW MUTE MUTE_t BEEP GND RIN
Standby
SW
Mute
SW
BEEP
15
14 13 12
11
10 9
16
+
- + - + -
2 3 4 5 6 7
8
1
C - Amp
SW
BIAS
ALC
IC301 AN17881A-E1
IC401
yf
L2H
VOLT/DIV : 1 V AC
TIME/DIV : 2
µ sec
3.2 Vp-p
11.3
µ
sec
3
IC401
us
L3L
VOLT/DIV : 1 V AC
TIME/DIV : 2
µ sec
3.2 Vp-p
5.7
µ
sec
4
IC601
if
RFAC
VOLT/DIV : 0.1 V AC
TIME/DIV : 0.5 msec
0.4-0.65 Vp-p
5
5-8. IC BLOCK DIAGRAM
Ver 1.1 2002.04