Sony STR-DE898 - Fm Stereo / Fm-am Receiver, Руководство по обслуживанию

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STR-DE898/DE998
23 23
STR-DE898/DE998
Ver. 1.1
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 /
4
W or less unless otherwise
specified.
• f : internal component.
• 2 : nonflammable resistor.
• 5 : fusible resistor.
•
C
: panel designation.
• 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 M Ω ).
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.
E2
: AC 120V area in E model.
AR : Australian model.
AUS : Australian model.
SP : Singapore model.
MY : Malaysia model.
KR : Korean model.
TW : Taiwan model.
for printed wiring boards:
• X
: parts extracted from the component side.
•
f : internal component.
• : 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.
E2
: AC 120V area in E model.
AR : Australian model.
AUS : Australian model.
SP : Singapore model.
MY : Malaysia model.
KR : Korean model.
TW : Taiwan model.
Note:
The components identi-
fied by mark
0 or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
0
sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
• Waveforms
— DIGITAL Board — — VIDEO Board —
C
B
These are omitted.
E
Q
B
These are omitted.
C
Q
Q
E
B C E
1
IC1301
qd
(CKOUT)
2.1Vp-p
2Vp-p
1V/DIV, 50nsec/DIV
3
IC1301
wa
(XOUT)
1V/DIV, 50nsec/DIV
4
IC1501
9
(MCLK1)
2.2Vp-p
1V/DIV, 50nsec/DIV
2
IC1301
qf
(BCK)
3.2Vp-p
1V/DIV, 0.2 µ s/DIV
13.9MHz
12.288MHz
3.07MHz
12.288MHz
5
IC1501
qs
(MCLK2)
3.5Vp-p
1.8Vp-p
1V/DIV, 50nsec/DIV
7
IC1101
tj
(X1)
1V/DIV, 50nsec/DIV
6
IC1501
qf
(SCKOUT)
2.3Vp-p
1V/DIV, 50nsec/DIV
16.5MHz
12.288MHz
13.9MHz
1V/DIV, 20nsec/DIV (ON SCREEN: ON)
1
IC3501
8
(EXS)
2
IC3701
1
(CERA)
1.2Vp-p
1V/DIV, 2
µ
sec/DIV
500kHz
1.5Vp-p
14.31MHz
1V/DIV, 0.2
µ
sec/DIV
3
IC3701
wh
(XNTSC)
4
IC3701 wk (X443/358)
1.6Vp-p
1V/DIV, 0.2
µ
sec/DIV
4.43MHz
1.6Vp-p
3.5795MHz
— DISPLAY Board —
1V/DIV, 20nsec/DIV
1
IC100
3
(XOUT)
8MHz
0.5Vp-p