Yamaha CDR-HD1000 Service Manual page 29

A B
SCHEMATIC DIAGRAM (OPERATION 1/2)
1
Q Q
3 7 6 3 1 5 1 5 0
FL TUBE
5.0
5.0
-22.2
0
-22.2
0
0
~ ~
~ ~
~ ~
~ ~
2
~ ~
~ ~
~ ~
~ ~
~ ~
~ ~
~ ~
~ ~
~
DECODER/
DEMULTIPLEXERS
3
~
~ ~
~ ~
~ ~
~ ~
~ ~
~ ~
~ ~
~ ~
~ ~
~ ~
~ ~
~ ~
~ ~
4
-22.2
-22.2
T E
L 1 3 9 4 2 2 9 6 5 1 3
1.0 4.1
5 2.7 4.1
2.7
0
0
1.8 4.1
2.7 4.1
2.7
0
0
6
PHONES AMP
5.1 4.5
7
-5.0 -4.3
w w w
8
.
9
C D E
5.0 5.0
5.0 5.0
0 0
0 0
0 0
FL TUBE DRIVER
~ ~
~ ~
~ ~
~ ~
~ 5.0
~ ~
~ ~
~ ~
~ ~
~ ~
~ ~
0 ~ ~
4.3 ~
5.0 5.1 ~
5.0 5.1 ~
0 5.0 5.1 ~
0 5.0 5.0 ~
5.0 5.0 5.0 ~
5.0 0 5.0 ~
2.3 ~
2.3 ~
0 ~
~ ~
~ ~
~ ~
~ ~
~ ~
0 ~ ~
~ ~
4.3
~ ~
~ ~
0
-28.2 ~
4.1 5.0
4.8
0.1
4.8 0
5.1
0 4.3
0
0 0
REMOTE CONTROL
RECEIVER
5.1
5.0
1.8
0
0
0
POWER SW
4.0
0
4
1
2
0
3 0
0
0
7
TO OPERATION
0
6 8 0
E-37/J-35
5
B4
-3.8
x a o
y
i
F G
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8
Q Q
3 7 6 3
RS-232C DRIVER/RECEIVER
u 1 6 3
.
http://www.xiaoyu163.com
H I
2 4
9 9 8
1 5 1 5 0 8 9 2 4
m
All voltage are measured with a 10MΩ /V DC electric volt meter.
c o
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.
J K L
CDR-HD1000
IC400: HD74HC139FPEL
2
9 9
Dual 2 line to 4 line Decoders/Demultiplexers
4 1Y0
ENABLE 1G 1
5 1Y1
6 1Y2
1A 2
SELECT
7 1Y3
INPUTS 3
1B
12 2Y0
15
ENABLE 2G
11 2Y1
10 2Y2
2A 14
SELECT
9 2Y3
INPUTS 13
2B
IC500: µPC4570HA
Dual OP-Amp
1 2
- + + -
1 2 3 4 5 6 7 8 9
Vcc Vo -Vm +Vm V +Vm -Vm Vo Vcc
1 1 1 EE 2 2 2
IC900: SP232ECP
RS232 Driver/Receiver
T1O T2O R1I R2I
13 8 13 8
T1 T2
Charge
Pump
R1 R2
15 12 9 12 9
GND T1I T2I R1O R2O
PIN CONNECTION DIAGRAM OF TRANSISTORS,
DIODES AND ICS.
2SC2878 DTA114ES 1SR139-400 µPC4570HA
DTC114ES
Anode
9
9 8 2 E 9 9
E
C B 1
C B Cathode
HD74HC139FPEL M66004MAFP-200C
SP232ECP
64 33
8
16
1
1 32
E-36/J-34