Yamaha CRX-E300 - Schematic Diagram: Operation Section; Microprocessor and Display Circuits

PIN CONNECTION DIAGRAM OF TRANSISTORS, DIODES AND ICS.
A
1
2
3
4
5
6
7
8
9
BCDEFGH I JKL
SCHEMATIC DIAGRAM (OPERATION)
48
CRX-E300
★ All voltage are measured with a 10MΩ/V DC electric volt meter.
★ Components having special characteristics are marked s and must be replaced
with parts having specifications equal to those originally installed.
★ Schematic diagram is subject to change without notice.
130
31
50
5180
81
100
M30217M8-AXXXFP
IC203 : S-29390AFJA
CMOS 4kbit Serial EEPROM
5
2
7
6
8
1
3
4
DI
Vcc
GND
DO
TEST
NC
CS
SK
Memory array Address decoder
Data register Output buffer
Mode decode logic
Clock generator
S-29390AFJA
1
4
8
2SA1037K
DTC144EKA
1SS355
UDZ5.1B
UDZS6.2B
2SC4488
E
C
B
B
E
C
Anode
Cathode
FLUORESCENT DISPLAY
µ-COM
EEPROM
REMOTE SENSOR
TIMER
OPERATION KEY
Point 1 Pin 13 of IC201 Point 2 Pin 11 of IC201
Point 3 emitter of Q203
and collector of Q201
POWER ON
(Connect the power cord)
POWER OFF
(Disconnect the power cord)
Q203 E
0V
Q201 C
0V
M30217MAAFP
IC202: TC74HC4051AF
Analog Multiplexer/Demultiplexer
16
VCC
6
INHIBIT
11
3
9
A
C
B
8
GND
7
VEE
13
0
14
1
15
2
12
3
1
4
5
5
LEVEL
CONVERTER
10
BINARY TO 1-OF-8
DECODER WITH INHIBIT
SW
SW
SW
SW
SW
SW
2
6
4
7
SW
SW
COM
INPUT STATES
INHIBIT
0
0
0
0
0
0
0
0
1
"ON" CHANNNEL
0
1
2
3
4
5
6
7
NONE
C
0
0
0
0
1
1
1
1
X
B
0
0
1
1
0
0
1
1
X
A
0
1
0
1
0
1
0
1
X
TC74HC4051AF
1
8
16
-25.0 -25.0
-25.0 -25.0
-25.0 -25.0
~ ~ ~ ~ ~ ~ ~ ~
~ ~ ~ ~ ~
~ ~ ~ ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
4.8
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
0
0
5.0 4.8 5.0 4.8 0.1 4.8
0
5.1 4.9
0
4.9
0 0
4.8
0
4.7
0
5.0
0
4.9 4.9
0
1.1 1.7 4.7 2.4
0
2.1 4.8
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
-30.1
-25.0 -25.0
-25.3 -30.3
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
0
0.4
4.8
0
4.8
4.9
4.9
0
4.9
4.9
3.5
0
0
-30.3
-30.1
~
~
~
~
~
~
~
1.8
00.4 0
4.8
4.8
04.8
5.54.9
4.7
0
0
0
6.9
0
0
6.2
6.2
7.5
6.9
11.6 11.6
0
10.9
5.54.8
5.5 11.7
4.94.90
3
B
A
2
1
0
2.4 4.9 4.9 4.9 0.8 0.1
0 0
1.6 1.1 1.8
4.9
0
4.9
4.9
4.95.0
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