Printed Wiring Board -Main Section (Former Type) - Sony Walkman D-E220 Service Manual

D-E220/E225/E226CK
• Semiconductor
Location (Side A)
Ref. No. Location
D401 G-9
D402 I-9
D405 G-9
D406 H-7
D407 H-4
D415 H-9
D601 G-4
Q401 H-10
Q402 H-9
(Q404) G-9
(Q409) I-9
Q410 G-6
Q411 G-6
Q412 I-8
Q413 H-9
( ) : D-E225 only
Common Note on Schematic Diagram:
• 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 / W or less unless otherwise
4
specified.
• % : indicates tolerance.
• : internal component.
f
• C : panel designation.
Note:
Note:
Les composants identifiés par
The components identi-
fied by mark 0 or dotted une marque 0 sont critiques
line with mark 0 are criti-
pour la sécurité.
cal for safety. Ne les remplacer que par une
Replace only with part piéce por tant le numéro
number specified. spécifié.
• A : B+ Line.
• Power voltage is dc 4.5 V and fed with regulated dc power
supply from external power voltage jack.
• Voltages and waveforms are dc with respect to ground in
playback mode.
no mark : CD 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
FR : France model.
Common Note on Printed Wiring Boards:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• : Through hole.
a
• : internal component.
f
• : Pattern from the side which enables seeing.
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B) pattern face are indicated.
Parts face side: Parts on the parts face side seen from the
(Side A) parts face are indicated.
5-8. PRINTED WIRING BOARD — MAIN SECTION (FORMER TYPE) —
1 2 3
A
B
C
D
(E220/E226CK)
E
/REMOTE
(E225)
F
E225
E225
G
H
I
S803
HOLD
OFF ON
J
4 5 6
18 18
7 8 9 10
OPTICAL
PICK-UP
BLOCK
(DAX-23E)
RED
M502
SPINDLE MOTOR
BLK
WHT
M501
SLED MOTOR
BLK
1
BLK
RED
2
2 1
E225
E225
11