Read Sony HT-K250 / SA-WMSP250 Service Manual online
5
SA-WMSP250
SECTION 2
DIAGRAMS
Note on Printed Wiring Boards:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• b : Pattern from the side which enables seeing.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
(In addition to this, the necessary note is printed in each block.)
Note on Schematic Diagram:
• All capacitors are in
• All capacitors are in
µF unless otherwise noted. p: pF. 50
WV or less are not indicated except for electrolytics and
tantalums.
tantalums.
• 2 : nonflammable resistor
• All resistors are in
• All resistors are in
Ω and
1
/
4
W or less unless otherwise
specified.
• C : panel designation
•
•
f
: internal component
• A : B+ Line
• B : B– Line
• B : B– Line
• Voltages are dc with respect to ground under no-signal
conditions.
no mark : Power on
no mark : Power on
• Voltages are taken with a VOM (Input impedance 10M
Ω).
Voltage variations may be noted due to normal preduction
tolerances.
tolerances.
• Signal path.
F
: ANALOG INPUT
c
: DIGITAL INPUT
Note: The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
Replace only with part number specified.
• Waveforms
1
IC300 4
1 V/DIV, 10 ns/DIV
4.0 Vp-p
20.3 ns
3
IC605 qs (MCLK2)
1 V/DIV, 40 ns/DIV
4.1 Vp-p
73.5 ns
2
IC501 id (X1)
1 V/DIV, 100 ns/DIV
3.9 Vp-p
200 ns
4
IC606 wa (XOUT)
1 V/DIV, 40 ns/DIV
81.5 ns
4.8 Vp-p
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.
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