STR-DE885/DE985
21
21
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. pF: µµF
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.
E23
: AC 120/220/240V area in E model.
MX
: Mexican 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.
C
B
These are omitted.
E
Q
B
These are omitted.
C
Q
Q
E
B
C
E
4-2. CIRCUIT BOARDS LOCATION
• Abbreviation
CND : Canadian model.
E23
: AC 120/220/240V are in E model.
MX
: Mexican model.
MAIN board
STANDBY board
VIDEO board
COMPONENT board
S-VIDEO board
SPEAKER board
AC SELECT board
DIGITAL board
POWER board
HEADPHONE board
VIDEO3 board
OPT3 board
DISPLAY board
JOG board
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 por tant le numéro
spécifié.
• Waveforms (DIGITAL Board)
1
IC1301
ws
(XIN)
1V/DIV 50nsec/DIV
80nsec
2
IC1306
2
1V/DIV 20nsec/DIV
3
IC1501
qs
(MCLK2)
1V/DIV 50nsec/DIV
13.59MHz
4
IC1551
<zc.
(MCLK2)
1V/DIV 50nsec/DIV
13.5MHz
5
IC1551
0
(SCKOUT)
1V/DIV 20nsec/DIV
40nsec
6
IC1101
tj
(X1)
1V/DIV 20nsec/DIV
16.5MHz
3.6Vp-p
24.576MHz
3.6Vp-p
3.2Vp-p
3.2Vp-p
4.0Vp-p
3.2Vp-p
• Waveform (DISPLAY Board)
1
IC101
e;
(CLK)
1V/DIV 0.2µsec/DIV
0.48µsec
3.5Vp-p
• Waveform (VIDEO Board)
1
IC252
9
(XS)
1V/DIV 20nsec/DIV
14.31818MHz
4.2Vp-p
Содержание STR-DE885
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