Qy100 Overall Circuit Diagram - Yamaha QY100 Service Manual

A B C
QY100 OVERALL CIRCUIT DIAGRAM ( DM , PN )
1
DM
2
INVERTER
LINE
3 TRANSCEIVER
4
DRAM 4M
PHOTO COUPLER
INVERTER
5
6
OP AMP
OP AMP
(from K2)
7
8
PN
9
10
11
12 QY100
A B C
D E F G
(from G5)
INVERTER
(to H9)
(from I4)
(from K2)
(from O9)
SWX00B
(from K8)
AD CONVERTER
marked: not install
**
(from I12)
ROM 64M
28CC1-8817685 2
D E F G
H I J
INVERTER
(to N3)
SYSTEM RESET
ROM 16M
BUFFER
(from E6)
(to F2)
(to F2)
ROM 8M
INVERTER
(to F2)
OR
(from K11)
D-FF
D-FF
(from K9)
OR GATE
(from K2)
(from E2)
SWX00B
H I J
K L M
INVERTER
BUFFER
OR
INVERTER
(from K2)
SRAM 1M
D-FF
(from K2)
BUFFER
SRAM 1M
OR
D/A CONVERTER
to PN-CN1
(to G7)
SI-8501L (XS346A00)
REGULATOR +5V
6
SRAM 1M
Note : See parts list for details of circuit board component parts.
K L M
N O P
QY100
INVERTER
INVERTER
OR
(from G2)
INVERTER
INVERTER
(from E2)
SHIFT RESISTER
DC/DC CONVERTER
CPU
SRAM 256K
OP AMP
OP AMP
OP AMP
REGULATOR +3.3V
DC IN
3 1
to Battery
2
REGULATOR +5V
ON/STANDBY
POWER SUPPLY
UPC2933T-E1 (XS516A00)
REGULATOR +3.3V
2
1: V out 1
2: S.switch 3
4
3: GND 1: V IN
3
4: L in 2: GND
2
1 6: V in 3: OUTPUT
28CC1-8817684
1
QY100
N O P
Q
1
2
3
4
to LCD
5
6
7
8
9
10
11
12
Q