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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. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and
1
/
W or less unless otherwise
4
specified.
•
%
: indicates tolerance.
• 2 : nonflammable resistor.
• U : B+ Line.
• V : B– Line.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from +12V and REMOTE terminals.
• Voltage is dc with respect to ground under no-signal
condition.
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Signal path.
F
: AUDIO
for printed wiring boards:
Note:
• X : parts extracted from the component side.
• b : Pattern from the side which enables seeing.
(The other layer's patterns are not indicated.)
Q
Q
3
7
6
3
1
5
1
• IC Block Diagram
IC901 µPC494GS
16
15
14
13
12
11
10
9
REF. REG.
ERROR
0.1V
OSC
ERROR
1
2
3
4
5
6
7 8
• Waveform
1V/DIV, 5µsec/DIV
1
3.4Vp-p
15µsec
5
IC901
c o
.
10
2
4
2
9
8
• Semiconductor Location (MAIN SECTION)
Ref. No.
Location
Ref. No.
D101
E-9
IC902
D102
E-9
IC903
D103
E-9
D104
E-9
Q101
D201
E-4
Q102
D202
E-3
Q103
D203
E-4
Q104
D204
E-4
Q105
D301
F-8
Q106
D302
G-7
Q107
D801
D-7
Q108
D802
D-7
Q109
D803
B-11
(Q110)
D804
D-12
(Q111)
D805
A-11
Q112
D806
D-1
Q113
D807
B-11
Q114
D820
C-12
(Q115)
D821
D-12
Q116
(D822)
E-12
Q201
(D823)
F-12
Q202
D824
F-12
Q203
D825
G-12
Q204
D826
C-1
Q205
D827
D-1
Q206
(D828)
E-1
Q207
(D829)
F-1
Q208
D830
F-1
Q209
D831
G-1
(Q210)
D901
G-10
(Q211)
D902
G-10
Q212
D905
A-4
Q213
D906
A-4
Q214
D907
A-9
(Q215)
D908
A-8
Q216
5
0
8
9
2
4
9
8
2
D909
D-5
Q801
D910
D-5
Q802
D911
D-6
Q803
D912
D-5
Q804
D913
B-2
Q805
D914
B-2
Q809
D915
B-3
Q810
D917
D-6
Q811
D918
D-5
Q812
D919
D-10
Q813
D920
D-10
Q901
D921
E-3
Q902
D922
E-3
Q903
Q904
IC101
F-6
Q905
IC102
F-5
Q906
IC103
F-5
Q907
IC104
F-3
Q908
IC201
F-6
Q909
IC202
G-5
Q910
IC204
G-3
Q911
IC301
F-8
Q912
IC901
B-10
(
) : XM-1902GX only
m
9
9
Location
F-9
A-10
F-4
E-7
F-9
F-9
E-10
E-10
G-11
C-11
D-11
E-11
F-11
F-11
G-11
C-12
D-12
F-12
G-4
E-5
E-3
E-4
E-3
E-3
G-1
C-1
D-1
E-1
E-1
F-1
G-1
D-1
D-1
F-1
9
9
D-7
D-7
B-1
B-1
B-1
A-11
A-12
A-11
B-11
B-11
F-10
F-10
G-10
A-8
A-7
A-5
A-6
A-7
A-6
B-2
B-2
B-3
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