Diagrams - Sony STR-K402 Service Manual

THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this necessary note is printed in each
block.)
For schematic diagrams.
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and
1 / W or less unless otherwise
4
specified.
• % : indicates tolerance.
• : internal component.
f
• 2 : nonflammable resistor.
• 1 : fusible resistor.
• C : panel designation.
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.
• A : B+ Line.
• B : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
No mark : FM
• 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.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f
: CD
SECTION 3

DIAGRAMS

For printed wiring boards.
Note:
• X : parts extracted from the component side.
•
: Through hole.
a
•
: internal component.
f
• b : Pattern from the side which enables seeing.
C
These are omitted.
Q
B E
B C E
• Waveform
– DISPLAY BOARD –
1
IC102 id
63ns
– DIGITAL BOARD –
2
IC1005 7
81ns
STR-K402
These are omitted.
5.8Vp-p
5.8Vp-p
7