Sony CD Walkman D-EJ756CK, Руководство по обслуживанию

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D-EJ750/EJ751/EJ753/EJ755/EJ756CK/EJ758CK
18 18
r
Waveforms
IC601
rk
XTAO
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
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
1
2
• Abbreviation
AUS : Australian CND : Canadian
FR : French CH : Chinese
EE : East European MX : Mexico
C&SA : Central and South America
E13 : AC220-230V area model
• IC BLOCK DIAGRAM
IC601
if
RFAC
VOLT/DIV : 0.1 V AC
TIME/DIV : 0.5 msec
0.45-0.65 Vp-p
3
RF IN
OCLSW
VCC
ROUT
VREF
LOUT
PGND
LIN
BIAS 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
w w w . x i a o y u 1 6 3 . c o m
Q Q 3 7 6 3 1 5 1 5 0
9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com