AU-X095 - Sharp Air Conditioner Service Manual (repair manual)

au-x095 service manual
Model
AU-X095
Pages
32
Size
340.07 KB
Type
PDF
Document
Service Manual
Brand
Device
Air Conditioner
File
au-x095.pdf
Date

Read Sharp AU-X095 Service Manual online

1
AH-X075E/X095E
AU-X075E/X095E
AY-X075E/X095E
AE-X075E/X095E
TECHNICAL MANUAL
SHARP CORPORATION
INDOOR UNIT
OUTDOOR UNIT
AH-X075E
AU-X075E
AH-X095E
AU-X095E
AY-X075E
AE-X075E
AY-X095E
AE-X095E
SPLIT TYPE
ROOM AIR CONDI
TIONER
2
AH-X075E/X095E
AU-X075E/X095E
AY-X075E/X095E
AE-X075E/X095E
TABLE OF CONTENTS
                                                                                                                                                                          page
System Block Diagram(Indoor Unit AH-X075E/X095E, AY-X075E/X095E) ......................................... 3
Indoor Unit Control Circuit Operation ................................................................................................... 4
Power on Circuit ................................................................................................................................... 4
Power Supply Circuit ............................................................................................................................ 4
Reset Circuit ......................................................................................................................................... 5
Clock Waveform Forming Circuit .......................................................................................................... 6
Internal Osillator Circuit ........................................................................................................................ 6
Outdoor Power Supply Relay ............................................................................................................... 6
Serial Signal Circuit .............................................................................................................................. 7
Buzzer Circuit ....................................................................................................................................... 7
Light Reception Circuit ......................................................................................................................... 8
LED Circuit ........................................................................................................................................... 8
Specification Switching Circuit No. 1 .................................................................................................... 8
Specification Switching Circuit No. 2 .................................................................................................... 9
Test Input Circuit .................................................................................................................................. 9
Temperature Sensor Circuit ................................................................................................................. 9
Auxiliary Mode Circuit ........................................................................................................................ 10
Varistor and Fuse ............................................................................................................................... 10
Indoor Fan Circuit ............................................................................................................................... 11
Stepping Motor Circuit ........................................................................................................................ 12
CPU Port Allocation ........................................................................................................................... 13
System Block Diagram/Function Diagram(Outdoor Unit AU-X075E/X095E, AE-X075E/X095E) ...... 15
Outdoor Unit Control Circuit Operation .............................................................................................. 16
Model Switching Circuit ...................................................................................................................... 16
Internal Oscillator Circuit .................................................................................................................... 16
Reset Circuit ....................................................................................................................................... 17
Serial Signal Circuit ............................................................................................................................ 17
Outdoor Drive Circuit .......................................................................................................................... 18
Rotary Four-Valve Circuit ................................................................................................................... 19
Current Surge Suppression Circuit ..................................................................................................... 20
AC Current Detection Circuit .............................................................................................................. 21
Temperature Sensor Circuit ............................................................................................................... 22
IPM and PWM Drive Circuit ................................................................................................................ 22
IPM and Power Supply Circuit ............................................................................................................ 23
IPM and IPM Fault Detection Circuit .................................................................................................. 23
IPM and Active Filter .......................................................................................................................... 24
Test Mode Circuit ............................................................................................................................... 25
LED Circuit ......................................................................................................................................... 25
Inverter Circuit .................................................................................................................................... 26
(1) Noise filter circuit (AC) ............................................................................................................. 26
(2) Surge absorption circuit ........................................................................................................... 26
(3) Full-rectifier circuit .................................................................................................................... 26
(4) Smoothing condenser (CT) ...................................................................................................... 26
(5) Fuse (WPE2) ........................................................................................................................... 26
(6) Noise filtert circuit (DC) ............................................................................................................ 26
(7) Discharge resistor (R1) ............................................................................................................ 26
(8) Varistor (NR2) and fuse (WPE3) .............................................................................................. 26
CPU Terminal Allocation .................................................................................................................... 27
3
AH-X075E/X095E
AU-X075E/X095E
AY-X075E/X095E
AE-X075E/X095E
System Block Diagram
AY-X095E, AY-X075E, AH-X095E, and AH-X075E
DC power supply circuit
Fan motor phase control circuit
Rotation pulse input circuit
AC clock circuit
Louvre motor drive circuit
Remote controller signal
reception circuit
Buzzer drive circuit
CPU reset circuit
CPU oscillator circuit
Room temp. detect circuit
Heat exchanger thermo circuit
Compensation circuit/
select circuit
Compensation circuit
Switchover circuit
Serial I/O circuit
Main relay drive circuit
LED drive circuit
Auto restart circuit (option)
Test run circuit
Power on circuit
Flow direction control
(louvre motor)
Wireless remote control
operation
Audible operation confirmation
Room fan motor
Fan motor pulse detect
Room temp. thermistor
     Heat exchange thermistor
Blower temperature,
fan speed, model select
Outdoor ratings
Wireless, preheat
Indoor/outdoor control signal I/O
Outdoor unit power supply
on/off control
LED display
Test run (forced operation)
Self diagnostics, fault diagnosis
AC power
Indoor
Unit-unit
wiring (AC
power and
serial
signals)
CPU
2.5 A
protection
Auxiliary mode circuit
Auxiliary mode button ON/OFF
4
AH-X075E/X095E
AU-X075E/X095E
AY-X075E/X095E
AE-X075E/X095E
Indoor Unit Control Circuit Operation
The indoor unit control circuit is constructed around a CPU. Its main functions are reception of signals from the remote
control, transmission and reception of signals from the outdoor unit, control of the indoor fan motor, and control of the
louver motor.
Power On Circuit
If a jumper has been inserted at the position indicated by the dotted line in the diagram above, when the indoor power
socket is plugged in, CPU IC1 pin 39 goes HIGH (5V) and automatic mode operation begins.
Power Supply Circuit
The 220/240 V AC shown in the diagram above is generated when the indoor power socket is plugged in. The voltage
is lowered by the transformer TR. The voltage on the secondary side of the transformer is approximately 16 V AC. The
diode bridge formed by D1 to D4 performs full-wave rectification on this voltage. The resulting waveform is then
smoothed by capacitor C3, and finally approximately 17 V DC is asserted at both ends of C4. When this 17 V DC is
input to IN and GND of the 3-terminal regulator IC3, a stable voltage of 12 V DC is output across OUT and GND. The
17 V DC also passes through R3 to the Zener diode ZD1 and a stable voltage of 5 V can be obtained at both ends of
ZD1.
CPU (IC1) pin 39
5V
+
C4
ZD1
C3
D2
D1
AC 220/240V
12V
5V
R3
IN
OUT
GND
D4
D3
C6
+
IC3
C5
+
TR
Page of 32
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Download Sharp AU-X095 Service Manual (Repair Manual)

Here you can read online and download Sharp AU-X095 Service Manual in PDF. AU-X095 service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sharp AU-X095 Air Conditioner. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.