Samsung Electronics
5-6
Troubleshooting
5-2-6 If Operation By Remote Control Unit Is Impossible. (Initial Diagnosis)
1)
Troubleshooting pro c e d u re
Remove power cord and plug in again approx. 5 Seconds
Is operation lamp blinking?
Check as in the procedure “NO Power
parts”. Refer to page 5-2.
Normal
Replace battery.
LCD is faulty.
Replace button.
Micom is faulty.
Receiver module is faulty.
Q601(C4375Y) or Q602(C1623Y) is faulty.
IR LED(CL-1L5EU) is faulty.
“ “ sound heard from the indoor unit when
ON/OFF button on the remote control unit pushed?
Voltage of battery less than 2.5V (Remote Control Unit)?
LCD display status of REMOCON normal?
Voltage at PIN #30 of Remocon Micom change?
Voltage at collecter of Q601 or Q602 change?
Voltage at pin #26 of micom (IC04) change (INDOOR UNIT)?
Micom (IC04) is faulty.
Transmission display lamp ( ) blinking when
ON/OFF button on the remote control unit pushed?
N
Y
Y
N
N
N
N
N
Y
Y
Y
Y
Y
N
N
Y
Summary of Contents for AM18A1(B1)E09
Page 2: ...Samsung Electronics Co Ltd DEC 1998 Printed in Korea Code No DB81 10176A 2...
Page 4: ...1 2 Samsung Electronics MEMO...
Page 8: ...2 4 Samsung Electronics MEMO...
Page 24: ...3 16 Samsung Electronics MEMO...
Page 38: ...Samsung Electronics 6 1 6 Exploded Views and Parts List 6 1 Indoor Unit...
Page 40: ...Samsung Electronics 6 3 6 2 Outdoor Unit 11 10 2 10 3 10 5 10 4 10 1 10...
Page 44: ...6 7 Samsung Electronics MEMO...
Page 46: ...Samsung Electronics 8 1 8 PCB Diagrams 8 1 Main PCB...