Panasonic CS-S9NKR Service Manual Download Page 1 | Manualshive

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© Panasonic Appliances Air-Conditioning Malaysia
Sdn. Bhd. 2012. Unauthorized copying and distribution
is a violation of law.

Order No: PAPAMY1207092CE

Indoor Unit

Outdoor Unit

CS-S9NKR

CS-S12NKR
CS-S18NKR
CS-S24NKR
CS-S28NKR

CU-S9NKR

CU-S12NKR
CU-S18NKR
CU-S24NKR
CU-S28NKR

WARNING

This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to
service or repair the products dealt with in this service information by anyone else could result in serious injury or death.

PRECAUTION OF LOW TEMPERATURE

In order to avoid frostbit, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit.

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Summary of Contents for CS-S9NKR

Page 1: ...gned for use by the general public It does not contain warnings or cautions to advise non technical individuals of potential dangers in attempting to service a product Products powered by electricity...

Page 2: ...2 Indoor Fan Motor Operation 49 11 3 Outdoor Fan Motor Operation 50 11 4 Airflow Direction 50 11 5 Quiet Operation Cooling Mode Cooling Area of Dry Mode 51 11 6 Powerful Mode Operation 52 11 7 Economy...

Page 3: ...used If electrical circuit capacity is not enough or defect found in electrical work it will cause electrical shock or fire 9 This equipment is strongly recommended to install with Earth Leakage Circ...

Page 4: ...standard solder typically the melting point is 50 F 70 F 30 C 40 C higher Please use a high temperature solder iron In case of the soldering iron with temperature control please set it to 700 20 F 37...

Page 5: ...54 44 37 54 44 37 dB A 47 47 48 48 Cooling Outdoor Noise H L QLo Power Level dB 62 62 63 63 Max Current A Max Input Power W 5 7 1 25k 7 5 1 69k Starting Current A 3 0 4 1 Type Hermetic Motor Hermetic...

Page 6: ...ditional Gas m ft 7 5 24 6 7 5 24 6 Inner Diameter mm 16 7 16 7 Drain Hose Length mm 550 550 Fin Material Aluminium Pre coat Aluminium Pre coat Fin Type Slit Fin Slit Fin Row Stage FPI 2 15 21 2 15 21...

Page 7: ...ng Outdoor Noise H L QLo Power Level dB 61 56 61 56 Max Current A Max Input Power W 9 5 2 23k Starting Current A 5 9 Type Hermetic Motor Motor Type Brushless 6 poles Compressor Output Power W 900 Type...

Page 8: ...ditional Gas m ft 10 32 8 Inner Diameter mm 16 7 Drain Hose Length mm 550 Fin Material Aluminium Pre coat Fin Type Slit Fin Row Stage FPI 2 15 19 Indoor Heat Exchanger Size W H L mm 810 315 25 4 Fin M...

Page 9: ...1 63 54 51 66 54 51 66 54 51 dB A 52 47 52 47 54 49 54 49 Cooling Outdoor Noise H L QLo Power Level dB 66 61 66 61 68 63 68 63 Max Current A Max Input Power W 14 4 3 25k 14 6 3 26k Starting Current A...

Page 10: ...Additional Gas m ft 10 32 8 10 32 8 Inner Diameter mm 16 7 16 7 Drain Hose Length mm 650 650 Fin Material Aluminium Pre coat Aluminium Pre coat Fin Type Slit Fin Slit Fin Row Stage FPI 2 15 21 2 15 2...

Page 11: ...11 3 Location of Controls and Components 3 1 Indoor Unit 3 2 Outdoor Unit 3 3 Remote Control...

Page 12: ...12 4 Dimensions 4 1 Indoor Unit 4 1 1 CS S9NKR CS S12NKR...

Page 13: ...13 4 1 2 CS S18NKR CS S24NKR CS S28NKR...

Page 14: ...14 4 2 Outdoor Unit 4 2 1 CU S9NKR CU S12NKR 4 2 2 CU S18NKR CU S24NKR CU S28NKR...

Page 15: ...15 5 Refrigeration Cycle Diagram 5 1 CS S9NKR CU S9NKR CS S12NKR CU S12NKR...

Page 16: ...16 5 2 CS S18NKR CU S18NKR CS S24NKR CU S24NKR CS S28NKR CU S28NKR...

Page 17: ...17 6 Block Diagram 6 1 CS S9NKR CU S9NKR CS S12NKR CU S12NKR...

Page 18: ...18 6 2 CS S18NKR CU S18NKR...

Page 19: ...19 6 3 CS S24NKR CU S24NKR...

Page 20: ...20 6 4 CS S28NKR CU S28NKR...

Page 21: ...21 7 Wiring Connection Diagram 7 1 Indoor Unit 7 1 1 CS S9NKR CS S12NKR...

Page 22: ...22 7 1 2 CS S18NKR CS S24NKR CS S28NKR...

Page 23: ...ING TERMINAL GROUNDING TERMINAL NOISE FILTER CIRCUIT PFC CIRCUIT RECTIFICATION CIRCUIT RECTIFICATION CIRCUIT FAN MOTOR CIRCUIT COMMUNICATION CIRCUIT RECTIFICATION CIRCUIT SWITCHING POWER SUPPLY CIRCUI...

Page 24: ...AL BOARD 1 BLACK 2 WHITE 3 RED COMPRESSOR TERMINAL THE PARENTHESIZED LETTERS IS INDICATED ON TERMINAL COVER TRADEMARK BLUE BLU RED RED ELECTRO MAGNETIC COIL EXPANSION VALVE CN EV WHT CN ACFM WHT YELLO...

Page 25: ...25 7 2 3 CU S24NKR...

Page 26: ...26 7 2 4 CU S28NKR...

Page 27: ...27 8 Electronic Circuit Diagram 8 1 Indoor Unit 8 1 1 CS S9NKR CS S12NKR...

Page 28: ...28 8 1 2 CS S18NKR CS S24NKR CS S28NKR...

Page 29: ...29 8 2 Outdoor Unit 8 2 1 CU S9NKR CU S12NKR...

Page 30: ...30 8 2 2 CU S18NKR...

Page 31: ...31 8 2 3 CU S24NKR...

Page 32: ...32 8 2 4 CU S28NKR...

Page 33: ...33 9 Printed Circuit Board 9 1 Indoor Unit 9 1 1 Main Printed Circuit Board 9 1 1 1 CS S9NKR CS S12NKR...

Page 34: ...34 9 1 1 2 CS S18NKR CS S24NKR CS S28NKR 9 1 2 Indicator Printed Circuit Board...

Page 35: ...35 9 2 Outdoor Unit 9 2 1 Main Printed Circuit Board 9 2 1 1 CU S9NKR CU S12NKR...

Page 36: ...36 CN DEMAND AC GND CN PWR...

Page 37: ...37 9 2 2 CU S18NKR...

Page 38: ...38 9 2 3 CU S24NKR CU S28NKR...

Page 39: ...eat radiation from the condenser is not obstructed There should not be any animal or plant which could be affected by hot air discharged Keep the spaces indicated by arrows from wall ceiling fence or...

Page 40: ...st 5 screws If mounting the unit on the concrete wall consider using anchor bolts o Always mount the installation plate horizontally by aligning the marking off line with the thread and using a level...

Page 41: ...2 3 Indoor Unit Installation 10 2 3 1 For the right rear piping 10 2 3 2 For the right and right bottom piping 10 2 3 3 For the embedded piping This can be used for left rear piping and bottom piping...

Page 42: ...42...

Page 43: ...between indoor unit and outdoor unit according to the diagram below 5 Secure the connecting cable onto the control board with the holder clamper o Ensure the colour of wires of outdoor unit and termin...

Page 44: ...tube assembly onto the copper pipe In case of using long piping Connect the piping Align the center of piping and sufficiently tighten the flare nut with fingers Further tighten the flare nut with tor...

Page 45: ...Hg 0 Mpa to 76 cmHg 0 1Mpa Then evacuate the air approximately ten minutes 4 Close the Low side valve of the charging set and turn off the vacuum pump Make sure that the needle in the gauge does not m...

Page 46: ...cable between outdoor unit and DRED Demand response enabling devices shall be double insulation layer polychloroprene sheathed 50V with size 4 0 5 mm2 to 2 0 mm2 cable or flexible cord where the maxi...

Page 47: ...mentioned in Indoor Outdoor Unit Installation Diagram Please wrap the insulated piping end to prevent water from going inside the piping 2 If drain hose or connecting piping is in the room where dew m...

Page 48: ...g temperature will be taken as base value for temperature shifting processes These shifting processes are depending on the air conditioner settings and the operation environment The final shifted valu...

Page 49: ...or intake temperature remote control setting temperature 3 C if previous operate in DRY mode then continue in DRY mode Otherwise COOL mode is decided o If 2 C indoor intake temperature remote control...

Page 50: ...rected by vertical vanes Control of airflow direction can be automatic angles of direction is determined by operation mode heat exchanger temperature and intake air temperature and manual angles of di...

Page 51: ...lluminates low intensity o Quiet operation stop condition When one of the following conditions is satisfied quiet operation stops QUIET button is pressed again Stop by OFF ON switch Timer off activate...

Page 52: ...on Powerful Quiet and Economy could not be operated at the same time The unit will follow the latest setting of these three operations The Economy operation stops when 1 Operation OFF 2 Received Econo...

Page 53: ...his control can be omitted by open the circuit of JP1 at indoor unit printed circuit board 11 10Indication Panel LED POWER TIMER QUIET ECONOMY POWERFUL Color Green Orange Orange Orange Light ON Operat...

Page 54: ...12 48 12 14 Cooling Soft Dry X C 5 03 6 13 6 13 11 46 11 10 Y 15 00 15 00 15 00 19 00 19 00 The first 30 minutes of cooling operation A will be applied 12 1 3 IPM Power Transistor Prevention Control...

Page 55: ...ol Gas Leakage Detection Control start conditions o For 5 minutes the compressor continuously operates and outdoor total current is between 0 75A and 0 95A S9 12NK 1 38A and 1 65A S18NK o During Cooli...

Page 56: ...he indoor heat exchanger is higher than 5 C At the same time indoor fan speed will be higher than during its normal operation If indoor heat exchanger temperature is higher than 5 C for 5 minutes the...

Page 57: ...ner connected to Demand Response Enabling Devices DRED the power consumption especially during peak hours could be controlled DRM1 Relay 1 DRED AIR CONDITIONER DRM2 Relay 2 DRM3 Relay 3 COM Three Dema...

Page 58: ...e selected The indoor unit will only operate when received signal with same transmission code from remote control This could prevent signal interference when there are 2 or more units installed nearby...

Page 59: ...tton To clear and restore the remote control setting to factory default o Press once to clear the memory 13 2 4 RESET AC Button To restore the unit s setting to factory default o Press once to restore...

Page 60: ...Mpa kg cm 2 G Outlet air Temperature C Cooling Mode 0 9 1 2 9 12 12 16 Condition Indoor fan speed High Outdoor temperature 35 C at cooling mode Compressor operate at rated frequency Different in the i...

Page 61: ...w Pressure High Pressure Electric current during operation Insufficient refrigerant gas leakage Clogged capillary tube or strainer Short circuit in the indoor unit Heat radiation deficiency of the out...

Page 62: ...2 3 To Display Memorized Error Code Protective Operation 1 Turn power on 2 Press the CHECK button on the remote control 3 will be displayed on the remote control display Note Display only for No sign...

Page 63: ...rmality 2 occurrences within 30 minutes Outdoor fan motor locked H98 Indoor temperature rise abnormality Air filter dirty Air circulation short circuit H99 Indoor heat exchanger freeze prevention prot...

Page 64: ...transmission is checked whether it is normal Malfunction Caused Faulty indoor unit PCB Faulty outdoor unit PCB Indoor unit outdoor unit signal transmission error due to wrong wiring Indoor unit outdo...

Page 65: ...re interconnected Malfunction Caused Wrong models interconnected Wrong indoor unit or outdoor unit PCBs mounted Indoor unit or outdoor unit PCBs defective Indoor outdoor unit signal transmission error...

Page 66: ...tion Decision Conditions During startup and operation of cooling and heating the temperatures detected by the indoor intake air temperature sensor are used to determine sensor errors Malfunction Cause...

Page 67: ...Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor compressor temperature sensor are used to determine sensor errors Malfunction Caused F...

Page 68: ...ons A current transformer CT is detected by checking the compressor running frequency rated frequency and CT detected input current less than 1 14A for continuously 20 seconds Malfunction Caused CT de...

Page 69: ...termine abnormal fan motor feedback of rotation 2550rpm or 50rpm Malfunction Caused Operation stops due to short circuit inside the fan motor winding Operation stops due to breaking of wire inside the...

Page 70: ...Decision Conditions During startup and operation of cooling and heating the temperatures detected by the indoor heat exchanger temperature sensor are used to determine sensor errors Malfunction Caused...

Page 71: ...Abnormal Malfunction Decision Conditions During standby of cooling and heating operation e ion breakdown occurs and air conditioner stops operation Malfunction Caused Faulty indoor main PCB Faulty in...

Page 72: ...tion Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor air temperature sensor are used to determine sensor errors Malfunction Caused Faul...

Page 73: ...tion Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor pipe temperature sensor are used to determine sensor errors Malfunction Caused Fau...

Page 74: ...ion Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor discharge pipe temperature sensor are used to determine sensor errors Malfunction C...

Page 75: ...lfunction Decision Conditions The supply power is detected for its requirement by the indoor outdoor transmission Malfunction Caused Wrong models interconnected Wrong indoor unit and outdoor unit PCBs...

Page 76: ...ity Malfunction Decision Conditions If Patrol sensor feedback is 0V or 5V continuous for 6 hours Error will display only when the Patrol operation is ON Malfunction Caused Faulty connector connection...

Page 77: ...ration is used to determine abnormal fan motor Malfunction Caused Operation stops due to short circuit inside the fan motor winding Operation stops due to breaking of wire inside the fan motor Operati...

Page 78: ...uring heating operation the temperature detected by the indoor pipe temperature sensor is above 60 C Malfunction Caused Clogged air filter of the indoor unit Dust accumulation on the indoor unit heat...

Page 79: ...n control takes place when indoor pipe temperature is lower than 2 C Malfunction Caused Clogged air filter of the indoor unit Dust accumulation on the indoor unit heat exchanger Air short circuit Dete...

Page 80: ...unction Decision Conditions When cooling operation when indoor pipe temperature or indoor heat exchanger temperature sensor is above 45 C Malfunction Caused Faulty connector connection Faulty indoor p...

Page 81: ...eration of cooling and heating when Power Factor Correction PFC protection circuitry at the outdoor unit main PCB senses abnormal high DC voltage level Malfunction Caused DC voltage peak due to power...

Page 82: ...cooling and heating operation running current 0 65A I 1 65A During cooling indoor intake indoor pipe 4 C Malfunction Caused Refrigerant shortage refrigerant leakage Poor compression performance of com...

Page 83: ...lfunction Decision Conditions A compressor rotation failure is detected by checking the compressor running condition through the position detection circuit Malfunction Caused Compressor terminal disco...

Page 84: ...detected by the outdoor pipe temperature sensor Malfunction Caused Outdoor pipe temperature rise due to short circuit of hot discharge air flow Outdoor pipe temperature rise due to defective of outdo...

Page 85: ...ture data 100 C is detected by the IPM temperature sensor Malfunction Caused IPM overheats due to short circuit of hot discharge air flow IPM overheats due to defective of outdoor fan motor IPM overhe...

Page 86: ...n of cooling and heating when compressor tank temperature data 112 C is detected by the compressor tank temperature sensor Malfunction Caused Refrigerant shortage refrigerant leakage 2 3 way valve clo...

Page 87: ...etected by checking the input current value being detected by current transformer CT with the compressor running Malfunction Caused Over current due to compressor failure Over current due to defective...

Page 88: ...door unit PCB Troubleshooting Checking the power transistor Never touch any live parts for at least 10 minutes after turning off the circuit breaker If unavoidable necessary to touch a live part make...

Page 89: ...pacitor has discharged sufficiently before proceeding with repair work Failure to heed this caution may result in electric shocks 15 1 CS S9NKR CS S12NKR 15 1 1 Indoor Electronic Controllers Cross Flo...

Page 90: ...90 Figure 3 Figure 4 15 1 1 3 To remove discharge grille Figure 5...

Page 91: ...91 15 1 1 4 To remove control board Figure 6 15 1 1 5 To remove cross flow fan and indoor fan motor Figure 7 Figure 8...

Page 92: ...92 Figure 9 Figure 10...

Page 93: ...CS S18NKR CS S24NKR CS S28NKR 15 2 1 Indoor Electronic Controllers Cross Flow Fan and Indoor Fan Motor Removal Procedures 15 2 1 1 To remove front grille Figure 11 15 2 1 2 To remove horizontal vane F...

Page 94: ...94 15 2 1 3 To remove main electronic controller Figure 13 Figure 14 Figure 15 15 2 1 4 To remove discharge grille Figure 16...

Page 95: ...95 15 2 1 5 To remove control board Figure 17 15 2 1 6 To remove cross flow fan and indoor fan motor Figure 18 Figure 19...

Page 96: ...96 Figure 20 Figure 21...

Page 97: ...nic Controller Removal Procedures 15 3 1 CU S9NKR CU S12NKR 1 Remove 5 screws of the Top Panel Figure 1 2 Remove the 8 screws of the Front Panel Figure 2 Screws Screw Screws Top Panel Screws Screws Sc...

Page 98: ...Cover of the Control Board by 4 hooks Figure 3 Figure 4 Figure 5 Figure 6 Top Cover Screw Terminal Board Cover Control Board Hooks Hooks Remove 2 screws Remove 1 screw Remove earth wire Remove 2 conn...

Page 99: ...99 15 4 Outdoor Electronic Controller Removal Procedures 15 4 1 CU S18NKR CU S24NKR CU S28NKR 1 Remove 8 screws of the Top Panel Figure 1 2 Remove the 8 screws of the Front Panel Figure 2...

Page 100: ...100 3 Remove the Top Cover of the Electronic Controller Figure 3 4 Remove the control board Figure 4 5 Remove the 6 screws of the Electronic Controller Figure 5...

Page 101: ...echnical Data 16 1 Operation Characteristics 16 1 1 CS S9NKR CU S9NKR Cooling Characteristic o Room temperature 27 C DBT 19 C WBT o Operation condition High fan speed o Piping length 7 5m o Compressor...

Page 102: ...102 Piping Length Characteristic o Room temperature 27 C DBT 19 C WBT o Operation condition High fan speed o Outdoor temperature 35 C DBT o Compressor Freq Fc...

Page 103: ...103 16 1 2 CS S12NKR CU S12NKR Cooling Characteristic o Room temperature 27 C DBT 19 C WBT o Operation condition High fan speed o Piping length 7 5m o Compressor Freq Fc...

Page 104: ...104 Piping Length Characteristic o Room temperature 27 C DBT 19 C WBT o Operation condition High fan speed o Outdoor temperature 35 C DBT o Compressor Freq Fc...

Page 105: ...105 16 1 3 CS S18NKR CU S18NKR Cooling Characteristic o Room temperature 27 C DBT 19 C WBT o Operation condition High fan speed o Piping length 5 0m o Compressor Freq Fc...

Page 106: ...106 Piping Length Characteristic o Room temperature 27 C DBT 19 C WBT o Operation condition High fan speed o Outdoor temperature 35 C DBT o Compressor Freq Fc...

Page 107: ...107 16 1 4 CS S24NKR CU S24NKR Cooling Characteristic o Room temperature 27 C DBT 19 C WBT o Operation condition High fan speed o Piping length 5 0m o Compressor Freq Fc...

Page 108: ...108 Piping Length Characteristic o Room temperature 27 C DBT 19 C WBT o Operation condition High fan speed o Outdoor temperature 35 C DBT o Compressor Freq Fc...

Page 109: ...109 16 1 5 CS S28NKR CU S28NKR Cooling Characteristic o Room temperature 27 C DBT 19 C WBT o Operation condition High fan speed o Piping length 5 0m o Compressor Freq Fc...

Page 110: ...110 Piping Length Characteristic o Room temperature 27 C DBT 19 C WBT o Operation condition High fan speed o Outdoor temperature 35 C DBT o Compressor Freq Fc...

Page 111: ...23 0 64 2 65 2 17 0 68 2 12 2 12 0 74 TC Total Cooling Capacity kW SHC Sensible Heat Capacity kW IP Input Power kW CS S12NKR CU S12NKR INDOOR OUTDOOR TEMPERATURE C DB CU S12NKR EWB EDB 20 25 30 32 RH...

Page 112: ...3 71 1 41 4 08 3 65 1 52 TC Total Cooling Capacity kW SHC Sensible Heat Capacity kW IP Input Power kW CS S24NKR CU S24NKR INDOOR OUTDOOR TEMPERATURE C DB CU S24NKR EWB EDB 20 25 30 32 RH C C TC SHC PI...

Page 113: ...0 9 04 6 07 1 94 8 84 5 92 2 13 8 74 5 88 2 30 8 69 5 86 2 37 51 9 24 32 9 38 5 90 1 95 9 18 5 75 2 14 9 11 5 72 2 31 9 06 5 70 2 38 INDOOR OUTDOOR TEMPERATURE C DB CU S28NKR EWB EDB 35 40 46 RH C C T...

Page 114: ...w and Replacement Parts List 17 1 Indoor Unit 17 1 1 CS S9NKR CS S12NKR Note The above exploded view is for the purpose of parts disassembly and replacement The non numbered parts are not kept as stan...

Page 115: ...3C1247 26 DISCHARGE GRILLE COMPLETE 1 CWE20C3236 27 BACK COVER CHASSIS 1 CWD933233 28 FULCRUM 1 CWH621131 29 VERTICAL VANE 8 CWE241374 30 CONNECTING BAR 2 CWE261251 33 AIR SWING MOTOR 1 CWA981264 O 34...

Page 116: ...116 17 1 2 CS S18NKR CS S24NKR CS S28NKR Note The above exploded view is for the purpose of parts disassembly and replacement The non numbered parts are not kept as standard service parts...

Page 117: ...ILLE COMPLETE 1 CWE20C3242 27 BACK COVER CHASSIS 1 CWD933031 28 FULCRUM 2 CWH621138 29 VERTICAL VANE 11 CWE241374 30 CONNECTING BAR RIGHT 1 CWE261257 31 CONNECTING BAR LEFT 1 CWE261258 32 AIR SWING MO...

Page 118: ...118 17 2 Outdoor Unit 17 2 1 CU S9NKR CU S12NKR Note The above exploded view is for the purpose of parts disassembly and replacement The non numbered parts are not kept as standard service parts...

Page 119: ...OUND PROOF MATERIAL 1 CWG302428 22 SENSOR CO COMP TEMP 1 CWA50C2830 O 24 ELECTRONIC CONTROLLER MAIN 1 CWA73C7005R CWA73C7006R O 26 TERMINAL BOARD ASSY 1 CWA28K1110J O 27 CABINET SIDE PLATE R 1 CWE04C1...

Page 120: ...120 17 2 2 CU S18NKR Note The above exploded view is for the purpose of parts disassembly and replacement The non numbered parts are not kept as standard service parts...

Page 121: ...31 SENSOR CO AIR AND COND TEMP 1 CWA50C2517 O 35 TERMINAL BOARD ASSY 1 CWA28K1110J O 37 ELECTRONIC CONTROLLER MAIN 1 CWA73C6929R O 38 CONTROL BOARD COVER TOP 1 CWH131333 39 CABINET SIDE PLATE L 1 CWE0...

Page 122: ...122 17 2 3 CU S24NKR CU S28NKR Note The above exploded view is for the purpose of parts disassembly and replacement The non numbered parts are not kept as standard service parts...

Page 123: ...CO COMP TEMP 1 CWA50C2656 O 31 SENSOR CO AIR AND COND TEMP 1 CWA50C2517 O 34 TERMINAL BOARD ASSY 1 CWA28K1076J O 35 TERMINAL BOARD ASSY 1 CWA28K1162 O 37 ELECTRONIC CONTROLLER MAIN 1 CWA73C6933R CWA73...

Page 124: ...124 Printed in Malaysia SB0712 0...

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