Diagrams; Circuit Board Location - Sony STR-K751P Service Manual

3-1. Circuit Board Location

STANDBY board
POWER board
HEADPHONE board
DISPLAY board
SECTION 3

DIAGRAMS

MAIN board
VIDEO board
DIGITAL board
VOLUME board
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. p : pF. 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.
• f : internal component.
• 2 : nonflammable resistor.
• 5 : fusible resistor.
• C : panel designation.
Note: 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.
• 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 produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
J : CD (ANALOG)
c : DVD (DIGITAL)
7 7
STR-K751P
For printed wiring boards.
Note:
• X : parts extracted from the component side.
• : Through hole.
a
• f : internal component.
• : Pattern from the side which enables seeing.
C
Q These are omitted.
B E
B C E
These are omitted.
Caution:
Pattern face side: Parts on the pattern face side seen from
(Side A) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Side B) the parts face are indicated.
• Waveform
DIGITAL Board
IC1101 wa (XOUT)
1
4.4Vp-p
81.4ns
(12.288MHz)
1V/div, 40ns/DIV
2 IC1201 9 (MCLK1)
3.7Vp-p
73.6ns (13.59MHz)
1V/div, 40ns/DIV
IC1601 id (XI)
3
3.5Vp-p
62.5ns (16MHz)
1V/div, 40ns/DIV