Sony ICD-MS525, Руководство по обслуживанию

Страница: 12 / 38

12
ICD-MS525
SECTION 4
DIAGRAMS
Note on Schematic Diagrams:
• 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
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 battery terminal.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : REC
[
] : PB
∗
: 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.
• 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
: PB
L : REC
* Replacement of IC6201, IC7102 used in this set requires
a special tool.
• The voltage and waveform of CSP (chip size package)
cannot be measured, because its lead layout is different
from that of conventional IC.
Note on Printed Wiring Boards:
• Y
: parts extracted from the conductor side.
•
b
: Pattern from the side which enables seeing.
Caution:
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 IC6201, IC7102 used in this set requires
a special tool.
• Lead layouts
• WAVEFORMS
surface
Lead layout of
conventional IC
CSP (chip size package)
1
IC7101
wd
(SCK1)
2
IC7101
wl
(SIPCLK)
3
IC7101
es
(DSPSYSCK)
4
IC7101
ef
(FSCLK)
5
IC7101
ej
(MSCLK)
6
IC7101
yd
(CF2)
2 V/DIV, 4
µ
s/DIV 2 V/DIV, 10
µ
s/DIV
2 V/DIV, 40 ns/DIV 2 V/DIV, 4
µ
s/DIV
2 V/DIV, 200 ns/DIV
1 V/DIV, 40 ns/DIV
31
µ
s
5.7
µ
s
567 ns
3.0 Vp-p
3.0 Vp-p
3.9 Vp-p
70 ns
3.1 Vp-p
3.9 Vp-p
71 ns
5.1
µ
s
3.1 Vp-p