Sony ICD-BM1 Service Manual page 11

ICD-BM1/BM1A/BM1AVTP/BM1B/BM1DR9
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
Common Note on Schematic Diagrams:
• All capacitors are in µF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
1
• All resistors are in Ω and / W or less unless otherwise
4
specified.
• f : internal component.
• C : panel designation.
• A : B+ Line.
• Power voltage is dc 3 V 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 : PB
∗ : Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: PB
L : REC
* IC601, IC702 on main board are not replaceable.
• The voltages and Waveform of CSP (chip size package)
cannot be measured, because its lead layout is different
from that of conventional IC.
Common Note on Printed Wiring Boards:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• : internal component.
f
• : Through hole.
z
• : Pattern from the side which enables seeing.
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B) pattern face are indicated.
Parts face side: Parts on the parts face side seen from the
(Side A) parts face are indicated.
* IC601, IC702 on main board are not replaceable.
• Lead Layouts
Lead layout of CSP (chip size package)
conventional IC
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ICD-BM1/BM1A/BM1AVTP/BM1B/BM1DR9
• Waveforms
1
IC801 qd (XOUT)
12MHz
2
IC701 ys (CF1)
15MHz
surface
2.1Vp-p
2.8Vp-p