99
XM-SD51X/SD61X
XM-SD51X/SD61X
• IC Block Diagrams
IC1 SSM2018TP
SECTION 3
DIAGRAMS
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:
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.
• 2 : nonflammable resistor.
• A : B+ Line.
• B : B– Line.
•Total current is measured with no-signal condition.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from +12V and REM terminals.
•Voltage is dc with respect to ground under no-signal con-
dition.
•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 : AUDIO
for printed wiring boards:
Note:
• X : parts extracted from the component side.
• : Pattern from the side which enables seeing.
(The other layer’s patterns are not indicated.)
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.
• Waveform
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.
3.1 Vp-p
18
µ
sec
1
IC6 5 (CT)
1 V/DIV, 10
µ
sec/DIV
IC6 TL494CN
OSC
REF 5V
ERROR
ERROR
0.1V
16 15 14 13 12 11 10 9
1 2 3 4 5 6 7 8
NON
INV
VREF
VCC
C2
E1
E2
OUT
+IN
-IN
COMP EN
CT
RT
C1
GND
TIME
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V1
BAL
VG
GND
MODE
VC
V-
COMP3
+I1
1-G
G
V+
IG
-I1
COMP1
+IN
-IN
COMP2
GAIN
CORE
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
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