Read Sony ICD-SX20 / ICD-SX30 / ICD-SX40 Service Manual online
12
ICD-SX20/SX30/SX40
SECTION 4
DIAGRAMS
Note on Schematic Diagrams:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
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 3V and fed with regulated dc power
supply from DC IN jack (J5001).
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : PB
[
no mark : PB
[
] : REC
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: PB
L
: REC
✩
Replacement of IC6001 used in this set requires a spe-
cial tool.
cial tool.
•
The voltage and waveform of CSP (chip size package)
cannot be measured, because its lead layout is different
from that of conventional IC.
cannot be measured, because its lead layout is different
from that of conventional IC.
Caution:
Pattern face side:
Pattern face side:
Parts on the pattern face side seen from
(SIDE B)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(SIDE A)
the parts face are indicated.
✩
Replacement of IC6001 used in this set requires a spe-
cial tool.
cial tool.
•
Lead layouts
• WAVEFORM
1
IC7003
<z/,
(XTAL)
1 V/DIV, 100 ns/DIV
2.9 Vp-p
244 ns
Note on Printed Wiring Boards:
• Y
: parts extracted from the conductor side.
• b
: Pattern from the side which enables seeing.
The other layers’ patterns are not indicated.
surface
Lead layout of
conventional IC
CSP (chip size package)
Click on the first or last page to see other ICD-SX20 / ICD-SX30 / ICD-SX40 service manuals if exist.