Sony STR-DE997 Service Manual page 19

THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
for schematic diagram:
• 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.
• : internal component.
f
• 2 : nonflammable resistor.
• 5 : fusible resistor.
• C : panel designation.
Note:
Note:
Les composants identifiés par
The components identi-
fied by mark 0 or dotted une marque 0 sont critiques
line with mark 0 are criti-
pour la sécurité.
cal for safety. Ne les remplacer que par une
Replace only with part piéce portant le numéro
number specified. spécifié.
• A : B+ Line.
• B : B– Line.
• Voltage 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.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: TUNER (FM/AM)
L : VIDEO (AUDIO)
I : VIDEO
J : CD (ANALOG)
c : CD (DIGITAL)
• Abbreviation
CND : Canadian model.
STR-DE997
for printed wiring boards:
• X : parts extracted from the component side.
• : internal component.
f
• : 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.
• Abbreviation
CND : Canadian model.
C
Q These are omitted.
B E
Q
B C E
These are omitted.
Q
B C E
• Waveforms (DIGITAL Board)
1V/DIV 50nsec/DIV
1
3.8Vp-p
12.288MHz
(CKOUT)
IC1301 qd
1V/DIV 0.2µsec/DIV
2
3.2Vp-p
3.07MHz
(BCK)
IC1301 qf
3 1V/DIV 50nsec/DIV
3.5Vp-p
12.288MHz
(XOUT)
IC1301 wa
4 1V/DIV 50nsec/DIV
2.2Vp-p
13.9MHz
IC1501 9 (MCLK1)
5 1V/DIV 50nsec/DIV
3.5Vp-p
13.9MHz
IC1501 qs (MCLK2)
6 1V/DIV 50nsec/DIV
3.8Vp-p
12.288MHz
IC1501 qf (SCKOUT)
7 1V/DIV 50nsec/DIV
2.1Vp-p
16.5MHz
IC1101 tj (X1)
19 19
STR-DE997
• Waveforms (VIDEO Board)
1 1V/DIV 20nsec/DIV
1.8Vp-p
14.31MHz
IC3501 8 (EXS)
1V/DIV 20nsec/DIV
2
2.6Vp-p
3.5795MHz
IC3701 wh (XNTSC)
• Waveform (DISPLAY Board)
1 1V/DIV 20nsec/DIV
2.6Vp-p
8MHz
IC100 3 (XOUT)