Casio ZD-1 Service Manual page 47

IC709: TC74VHCT08AFT
14 8
1 7
IC950: REC SPS-444-1
1 2 3
4 5
IC951: SM8140AM-ET
14
8
1 7
V 4B 4A
CC
14 13 12
1 2
1A 1B 1Y
Limiter
AMP
ABLC
V
DD
9
Enable Circuit
ENA 8
CPO 10
Charging Pump
Circuit
CP1 11
CP2 12
3
V 1
SS
45
4Y 3B
11 10
3 4 5
2A 2B
Waveform
Detector
Shaper
BPF
+
TRAP
LDR CHV
2
Level Shifter
Deviding Circuit
Oscillator for
boosting voltage
5
OCL1 OCL2
3A 3Y
9 8
6 7
2Y GND
3
V
CC
RL
2
V
OUT
1
GND
4
(GND)
5
(GND)
OUT1 OUT2
1 14 13
High Voltage
Switching Circuit
Level Shifter
Deviding Circuit
Oscillator for
EL
4 7 6
OCE1 OCE2