
Troubleshooting
Samsung Electronics
5-8
5-3-3 Detailed Procedure
No.
1
2
3
Malfunction
Pull out the power plug from
the AC terminal and confirm
the fuse on the PCB assembly
Turn the power on.
Set the TURBO mode
Checking point (symptoms)
1. Is the broken(open)?
Voltage check
1. AC voltage at BD71(~,~)?
: rating voltage ± 10% range
2. DC voltage at BD71(+,-)?
: about 325[v] ± 10%
3. DC voltage at IC02
: IN-GND
➔
DC12[v]
: OUT-GND
➔
DC5[v]
4. Voltage waveform at Q201
: collector-GND
➔
squarewave
Voltage check
1. check voltage of IC06
(pin#10,pin#8)
: relay on
➔
0.7[v]
: relay off
➔
12[v]
2. Voltage at terminal block
((N1) -1)
➔
rating voltage
Causes
Voltage over
Indoor unit fan
motor short-circuit
SMPS circuit is faulty
SMPS circuit is faulty
PC02, R202-R205
SMPS circuit is faulty
IC06 is faulty
RY71 is faulty
∆
∆
∆
∆
∆
∆
DB81-00181A(4)-1 3/6/11 3:24 PM Page 5-8
Содержание UQ07*5ME
Страница 13: ...MEMO Samsung Electronics 3 4 ...
Страница 27: ...MEMO Samsung Electronics 4 14 ...
Страница 55: ...MEMO Samsung Electronics 6 16 ...
Страница 57: ...MEMO Samsung Electronics 7 2 ...
Страница 58: ...8 1 Samsung Electronics 8 PCB Diagrams 8 1 ASS Y MAIN PCB DB93 00437A TOP PATTERN ...
Страница 60: ...8 3 Samsung Electronics PCB Diagrams BOTTOM PATTERN ...
Страница 61: ...Samsung Electronics 8 4 8 2 ASS Y MAIN PCB DB93 01017A TOP PATTERN ...
Страница 63: ...PCB Diagrams Samsung Electronics 8 6 BOTTOM PATTERN ...
Страница 65: ...MEMO Samsung Electronics 8 8 ...
Страница 66: ...9 1 Samsung Electronics 9 Wiring Diagrams 9 1 Indoor Unit ...
Страница 68: ...MEMO 9 3 Samsung Electronics ...
Страница 69: ...Samsung Electronics Samsung Electronics 10 2 10 1 10 Schematic Diagrams 10 1 Indoor Unit ...
Страница 70: ...MEMO Samsung Electronics 10 3 ...
Страница 72: ...ELECTRONICS Samsung Electronics Co Ltd Mar 2002 Printed in Korea Code No DB81 00181A 4 ...