Read Sharp AU-X095 Service Manual online
6
AH-X075E/X095E
AU-X075E/X095E
AY-X075E/X095E
AE-X075E/X095E
AU-X075E/X095E
AY-X075E/X095E
AE-X075E/X095E
Internal Oscillator Circuit
This is an internal oscillator circuit to run the CPU IC1 itself. The externally mounted ceramic oscillator and ceramic
capacitor yield a stable 8.00 MHz oscillation. The ceramic capacitor is built into OSC.
capacitor yield a stable 8.00 MHz oscillation. The ceramic capacitor is built into OSC.
Outdoor Power Supply Relay Circuit
This circuit supplies 220/240 V AC to the outdoor control circuit. IC2 is a transistor array to drive RY1. A transistor is
used because the relay cannot be driven directly by the CPU.
used because the relay cannot be driven directly by the CPU.
Clock Waveform Forming Circuit
This circuit generates the clock signal. It reshapes the power supply frequency to obtain a pulse waveform.
D3
D1
D4
R5
R4
D2
C8
Q1
R6
5V
CPU (IC1) pin 25
Transformer Secondary
C7
a
Transformer
Secondary
Secondary
Transistor Q1
Base
Base
CPU (IC1)
pin 25
pin 25
GND
GND
OSC
CPU (IC1) pin 10
CPU (IC1) pin 11
CPU (IC1) pin 11
RY1
IC2
CPU (IC1) pin 47
H : relay on
H : relay off
H : relay on
H : relay off
220/240
VAC
1
Terminal
Block
Block
12V
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