NW-E10, NW-E7 - Sony Audio Service Manual (repair manual). Page 17

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11
NW-E7/E10
Note on Schematic Diagram:
• 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 
 and 
1
/
4
 
W or less unless otherwise
specified.
: B+ Line.
• Power voltage is dc 1.5 V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground in
playback mode.
no mark : PLAY
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
).
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
: DIGITAL
F
: ANALOG
• The voltage and waveform of CSP (chip size package)
cannot be measured, because its lead layout is different
form that of conventional IC.
*
Replacement of IC601 used in the set requires a special
tool.
• IC Block Diagrams
z
 Waveforms
1
VOLT/DIV : 0.1 V AC
TIME/DIV : 20 nsec
330mVp-p
7.68msec
365mVp-p
16MHz
VOLT/DIV : 0.1 V AC
TIME/DIV : 2 msec
2
IC601 
oj
 CLKIN
IC901 
7
 XOUT
3
VOLT/DIV : 0.2 V AC
TIME/DIV : 10 
µ
sec
IC801 
3
 X2
600mVp-p
32kHz
4
5
6
3
2
1
8
7
SERIAL
PORT
SERIAL
PORT
DE-
EMPHASIS
DIGITAL
VOLUME
CONTROL
BASS/TREBLE
BOOST
MUTING
DIGITAL
FILTERS
Λ
I
DAC
ANALOG
FILTER
ANALOG
VOLUME
CONTROL
DIGITAL
FILTERS
Λ
I
DAC
ANALOG
FILTER
ANALOG
VOLUME
CONTROL
HEAD
PHONE
AMPLIFIER
LRCK
SDATA
SCLK
VD IO
MCLK
SCL
VQ HP
REF GND
15
9
10
11
12
13
14
16
RST
SDA
HP B
VA HP
VA
GND
HP A
FILT+
IC302  CS4343-KSR
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