Samsung AR TSFY WKNCV Series, Руководство по обслуживанию

Страница: 95 / 108

10-3
10-2-1 Pre-inspection Notices
1
Check if you pulled out the AC power plug when you eliminate the PCB or front panel.
2
Don’t hold the PCB side not impose excessive force on it to eliminate the PCB.
3
Don’t pull the lead wire but hold the whole housing to connect or disconnect a connector to the PCB.
4
Ã͝ʀɇϑʪͱ˙ͱЇϩʒͱͱθťA9ʒ̈ϑɇϑϑʪ͔ɵ̷цࡥʀ˵ʪʀ̧ѣθϑϩϩ˵ʪʀͱ͔Χ̷ʪϩʪʒ̈ϑʀ˵ɇθ˝ʪͱ˙ʀͱ͝ʒʪ͝ϑʪθɇ˙ϩʪθߣ͔̈͝Їϩʪ
power off.
10-2-2 Inspection procedure
1
Check connector connection and peeling of PCB or bronze coating pattern when you think the PCB is
broken.
2
The PCB is composed of 3 parts.
• Indoor Main part : MICOM and surrounding circuit, relay, fan motor sensing and driving circuit,
temperature sensing circuit power circuit of SMPS, buzzer circuit. Communication circuit.
• Display part : LED lamp, Switch, Remote-control module.
• Outdoor Main part : MICOM and surround circuit, fan motor sensing and driving circuit, compressor
driving circuit power circuit of SMPS, PFC control circuit, 4way circuit, communication circuit, OPTION
(EEV control circuit, temperature sensing circuit).
10-2-3 Indoor detailed inspection procedure
No. Procedure Inspection Method Cause
ߣ
Plug out and pull the PCB
out of the control box
Check the PCB fuse ߣ࣒Ãϑߣϑϩ˙Їϑʪʒ̈ϑʀͱ͝͝ʪʀϩʪʒ࢐
ߤ࣒Ãϑߤ͝ʒ˙Їϑʪʒ̈ϑʀͱ͝͝ʪʀϩʪʒ࢐ • Over current
• Indoor Fan motor short
• AC part and pattern short
of Indoor PBA
2
Supply power
If the operating lamp
twinkles
at this time , the above
ߣ࣒ड़ߥ࣒˵ɇЭʪ͝ͱθʪ̷ɇϩ̈ͱ͝
Check the power voltage
ߣ࣒Ãϑϩ˵ʪ9Uߩߣ̈͝ΧЇϩЭͱ̷ϩɇ˝ʪ
ߤߢߢǤɇʀड़ߤߦߢǤɇʀ࢐ • Power cord is fault, Fuse
open, Wrong Power cable
Wiring, AC part is faulty
2) Is the voltage between both
ϩʪθ͔̈͝ɇ̷ͱ˙ÃAߢߤΧ̈͝࢈ߣࣛ࢈ߤߣߤǤʒʀ࢐
• Switching Trans of Power
circuit is faulty
3) Is the voltage between both
ϩʪθ͔̈͝ɇ̷ͱ˙ÃAߢߤΧ̈͝࢈ߤࣛ࢈ߥߧǤʒʀ࢐
• Power circuit is faulty, Load
short
3
Press the ON/OFF button
ߣ࢏˜ɇ͝ϑΧʪʪʒ࣑˵̈˝˵࣒
2. Continuous Operation
ߣ࣒Ãϑϩ˵ʪЭͱ̷ϩɇ˝ʪͱЭʪθAߣߪߢǤɵʪ̈͝˝
imposed on terminal #3-#5 of fan
͔ͱϩͱθʀͱ͝͝ʪʀϩͱθ࣑AĘߩߤ࣒࢐
• Fan motor of the indoor is
faulty
2) The fan motor of the indoor unit
doesn’t run • ˜ɇ͔͝ͱϩͱθʀͱ͝͝ʪʀϩͱθ࣑AĘߩߤ࣒
is faulty
3) The power voltage between
terminal #3-#5 of the
ʀͱ͝͝ʪʀϩͱθ࣑AĘߩߤ࣒̈ϑߢǤ
• PBA is faulty