NW-A1000
23
23
NW-A1000
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 TP9001 and TP9002 on the MAIN board.
•
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
•
The voltage and waveform of CSP (chip size package)
cannot be measured, because its lead layout is different
from that of conventional IC.
•
Waveforms
•
MAIN board is multi-layer printed board.
However, the patterns of intermediate-layer have not been
included in diagram.
•
Lead Layouts
*
Replacement of IC3101, 5001, 6005, 7001, 8001 and
9001 used in this set requires a special tool.
•
Note for Printed Wiring Boards and Schematic Diagrams
Lead layout of conventional IC CSP (chip size package)
*
Replacement of IC3101, 5001, 6005, 7001, 8001 and
9001 used in this set requires a special tool.
Note:
The components identi-
fied by mark
0
or dotted
line with mark
0
are criti-
cal for safety.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
0
sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce por tant le numéro
spécifié.
2
IC4101
8
(OSCOUT)
500 mV/DIV, 10
µ
s/DIV
30.5
µ
s
1.1 Vp-p
3
X3101
2 V/DIV, 20 ns/DIV
44.3 ns
3.6 Vp-p
1
X6001
1 V/DIV, 20 ns/DIV
44.3 ns
2.3 Vp-p
4
IC3002
2
(BCK)
2 V/DIV, 100 ns/DIV
326 ns
3.4 Vp-p
5
IC3002
qh
(SCKI)
2 V/DIV, 50 ns/DIV
89 ns
4.3 Vp-p
22.8
µ
s
3.5 Vp-p
6
IC3002
w;
(LRCK)
2 V/DIV, 10
µ
s/DIV
7
X5001
1 V/DIV, 50 ns/DIV
89 ns
2.8 Vp-p
