1515
STR-K980
STR-K980
•Waveforms
– DIGITAL Board –
1
IC1501
9
(MCLK1)
1 V/DIV, 40 ns/DIV
72 ns
3.4 Vp-p
2
IC1101
id
(X1)
1 V/DIV, 20 ns/DIV
41.6
n
s
4.2 Vp-p
3
IC1301
ws
(XIN)
1 V/DIV, 40 ns/DIV
81 ns
4.4 Vp-p
• Circuit Boards Location
DIGITAL board
MAIN board
POWER board
ADCC board
HEADPHONE board
STANDBY board
SPEAKER C/SB board
SPEAKER B board
VIDEO board
DISPLAY board
VIDEO 3 board
SECTION 3
DIAGRAMS
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
/
4
W or less unless otherwise
specified.
• % : indicates tolerance.
• f : internal component.
• 2 : nonflammable resistor.
• 5 : fusible resistor.
• C : panel designation.
• A : B+ Line.
• B : B– Line.
•Voltages and waveforms are dc with respect to ground un-
der 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 production
tolerances.
•Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
• Signal path.
F : FM
J : ANALOG
c : DIGITAL
I : VIDEO
For Printed Wiring Boards.
Note:
• X : parts extracted from the component side.
•
a
: Through hole.
• f : internal component.
• : Pattern from the side which enables seeing.
• Indication of transistor.
Caution:
Parts face side: Parts on the parts face side seen from
(Side A) the parts face are indicated.
Pattern face side: Parts on the pattern face side seen from
(Side B) the pattern face are indicated.
C
B
These are omitted.
E
Q
B
These are omitted.
CE
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
Note: The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
To Next Page
Loading...
