Sony Network Walkman NW-HD3, Руководство по обслуживанию

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NW-HD3
21 21
NW-HD3
Note on Schematic Diagram:
•
All capacitors are in
µ
F unless otherwise noted. (p: pF)
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.
•
f
: internal component.
•
C
: panel designation.
•
A
: B+ Line.
•
Power voltage is dc 4.2 V and fed with regulated dc power
supply from CN9501.
•
Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : PLAYBACK
•
Voltages are taken with a VOM (Input impedance 10 M
Ω
).
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.
F
: AUDIO
Note on Printed Wiring Board:
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
f
: internal component.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
Parts on the pattern face side seen from
(Conductor Side) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Component Side) the parts face are indicated.
surface
Lead layout of conventional IC CSP (chip size package)
•
The voltage and waveform of CSP (chip size package)
cannot be measured, because its lead layout is different
from that of conventional IC.
•
When IC1101 and IC1102 (IC1102 is mounted only E,
Hong Kong, Taiwan, Korean, Chinese and Tourist mod-
els) on the MAIN board are damaged, exchange the new
MAIN board for the MAIN board which IC damaged.
•
Abbreviation
CH
: Chinese model
HK : Hong Kong model
JE : Tourist model
KR : Korean model
TW : Taiwan model
•
Waveform
44.3 ns
1.9 Vp-p
30.5
µ
s
1 Vp-p
304
µ
s
80 mVp-p
– MAIN Board –
1
X1002
500 mV/DIV, 20 ns/DIV
2
IC9503
7
(OSCIN)
200 mV/DIV, 10
µ
s/DIV
3
IC9001
8
(VOUT)
20 mV/DIV, 100
µ
s/DIV
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
•
When IC1101 and IC1102 (IC1102 is mounted only E,
Hong Kong, Taiwan, Korean, Chinese and Tourist mod-
els) on the MAIN board are damaged, exchange the new
MAIN board for the MAIN board which IC damaged.
•
MAIN and HDD boards are multi-layer printed board.
However, the patterns of intermediate-layer have not been
included in diagram.
•
Lead Layouts
* Replacement of IC1003, 2001, 3001, 7001, 7002 and
9002 used in this set requires a special tool.
* Replacement of IC1003, 2001, 3001, 7001, 7002 and
9002 used in this set requires a special tool.
Ver. 1.3