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XS-AW850
– 5 –
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SECTION 3
DIAGRAMS
3-1. IC BLOCK DIAGRAMS
2-3. DC FAN MOTOR
IC101
µ
PC4570G2
IC602 LM2904M
IC901
µ
PC494GS
4
1
2
3
5
6
7 8
9
10
16 15
14
13
12 11
ERROR
0.1V
REG.
REF.
OSC
ERROR
Main baord
1
Four screws
(K 3x10)
4
Two screws
(BTP 3x14)
2
Connector (CN502)
3
Heat sink sub (A)
5
DC fan motor
(M901)
CN502
8
9
10
7
6
5
12
13
14
11
4
3
2
1
B-
B+
5
6
7
8
4
3
2
1
B-
B+
BO
VC
C
A+
GND
A-
AO
• WAVEFORMS
1
2
3
4
14Vp-p
27
µ
sec
29Vp-p
27
µ
sec
29Vp-p
27
µ
sec
60Vp-p
27
µ
sec
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
For schematic diagrams.
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
¢
: internal component.
•
C
: panel designation.
•
U
: B+ Line.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
• Voltage and waveforms are dc with respect to ground
under no-signal conditions.
no mark : POWER ON
no mark : POWER ON
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
• Signal path.
F
: AUDIO
For printed wiring boards.
Note:
• X
: parts extracted from the component side.
•
¢
: internal component.
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