XS-AW850
– 5 –
– 6 –
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.)
For schematic diagrams.
Note:
• 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.
•
¢
: 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
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: AUDIO
For printed wiring boards.
Note:
•
X
: parts extracted from the component side.
•
¢
: internal component.
