Asus ZS620KL Скачать руководство пользователя страница 5 | Manualshive

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TRx

U6201

SDR845

HB/MB Pamid

U6403

QM77031

LB/2G Pamid

U6421

QM77033

HB/MB LNAs

U6605

QLN-1030

LB LNAs

U6601

QLN-1020

HB Tx

MB Tx

LB Tx

2G Tx

Diplexer
U6401

MB TRx

LB TRx

Con6402

HB TRx

Diplexer

U6414

Con6401

B32 PRx

LB PRx

MB PRx

HB PRx

Tx/PRx path block diagram

2G MB Tx

HB : B7/

B30

/B38/B40/B41

MB: B1/B2/B3/

B4

/

B32/B34

/B39

LB: B5/B8/

B12/B17

/B18/B19/B20/

B26/B28A/B28B/

B29/BC0

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Содержание ZS620KL

Страница 1: ...ASUS ZS620KL RF Hardware Trouble Shooting Guide ...

Страница 2: ...d Bands WW 2G GSM GSM850 EGSM DCS PCS 3G WCDMA B1 B2 B5 B6 B19 B8 4G LTE FDD B1 B2 B3 B5 B7 B8 B18 B19 B20 B26 B28A B28B B4 B12 B17 B29 B30 B32 B34 LTE TDD B38 B39 B40 B41 4 4MIMO B3 B7 TDSCDMA B34 B39 CDMA BC0 LAA B46 ...

Страница 3: ...ZS620KL Supported Bands TW 2G GSM GSM850 EGSM DCS PCS 3G WCDMA B1 B2 B5 B6 B19 B8 4G LTE FDD B1 B2 B3 B5 B7 B8 B18 B19 B20 B26 B28A B28B LTE TDD B38 B39 B40 B41 4 4MIMO B3 B7 ...

Страница 4: ...RF Block Diagram 2G 3G 4G System ...

Страница 5: ... QLN 1030 LB LNAs U6601 QLN 1020 HB Tx MB Tx LB Tx 2G Tx Diplexer U6401 MB TRx LB TRx Con6402 HB TRx Diplexer U6414 Con6401 B32 PRx LB PRx MB PRx HB PRx Tx PRx path block diagram 2G MB Tx HB B7 B30 B38 B40 B41 MB B1 B2 B3 B4 B32 B34 B39 LB B5 B8 B12 B17 B18 B19 B20 B26 B28A B28B B29 BC0 ...

Страница 6: ... LNAs U6814 QLN 1030 LB LNAs U6832 QLN 1020 Diplexer U6801 MB DRx LB DRx Con6804 HB DRx Con6803 LB DRx MB DRx HB DRx DRx path block diagram HB B7 B30 B38 B40 B41 MB B1 B2 B3 B4 B32 B34 B39 LB B5 B8 B12 B17 B18 B19 B20 B26 B28A B28B B29 BC0 ...

Страница 7: ...tenna Port定義 1 因此FBRX跟TX的Antenna Port只會有 0 for L M Band 4 for H Band 2 目前ZS620KL只support B3跟B7 4X4 MIMO Main L M B7 CON6402 DRX L M B7 CON6804 Main H Band B3 B32 CON6401 DRX H Band B3 B32 CON6803 0 4 2 6 ...

Страница 8: ...RFM Device definition I 1 RFM Device is actually the location of the corresponding VCO RFM Device 0 7 indicate RX path 2 RFM Device 8 TX Chain 0 9 TX Chain 1 ...

Страница 9: ...RX TX Antenna Port only have 0 for L M Band 4 for H Band 2 RFM Device only have 8 for CH0 9 for CH1 3 according to support ULCA B7 will have two paths one of which is B7 ULCA which can determine if B7 TX is abnormal ...

Страница 10: ...DL CA Path II PRX OLN1030 B3 There are 10 signal path DRX OLN1030 B3 CA When the B3 B7 4 4 combination is used it is use L MB B7 upside antenna so the position is 2 ...

Страница 11: ...DL CA路徑 II B7 會有18條signal path PRX OLN1030 DRX OLN1030 B7 CA When the B3 4 4 B7 combination is used it is use HB upside antenna so the position is 6 ...

Страница 12: ...Rx RF Connector HB CON6403 CON6401 RF Connector LB MB CON6404 CON6402 TRx MB HB PAmid U6403 LB 2G PAmid U6421 B7 PA U6418 Main diplexer U6414 B3 4x4 B32 H Main diplexer U6401 L B32 M H LB QLN1020 U6601 MB HB QLN1030 U6605 ...

Страница 13: ...Key Components DRx Div RF connector LB MB CON6804 Div RF connector HB CON6803 Transceri ver DiFEM U6802 DRX MB HB QLN1030 U6814 DRX LB QLN1020 U6814 Diversity diplexer U6801 L M B32 ...

Страница 14: ...TX Path GSM 850 900 BOTTOM Transceriver LB PAmid U6421 Main diplexer U6401 DPDT U6409 RF Connector LB MB CON6404 CON6402 ...

Страница 15: ...TX Path GSM DCS PCS BOTTOM Transceriver LB PAmid U6421 MB HB PAmid U6403 Diplexer MB HB U6410 Main diplexer U6401 DPDT U6409 RF Connector LB MB CON6404 CON6402 ...

Страница 16: ...TX Path B5 B8 B12 B17 B18 B19 B20 B26 BC0 BOTTOM Transceriver LB PAmid U6421 Main diplexer U6401 DPDT U6409 RF Connector LB MB CON6404 CON6402 CH0 LB TX input ...

Страница 17: ...TX Path B28A BOTTOM Transceriver LB PAmid U6421 Duplexer U6422 Main diplexer U6401 DPDT U6409 RF Connector LB MB CON6404 CON6402 ...

Страница 18: ...TX Path B28B Transceriver LB PAmid U6421 Main diplexer U6401 DPDT U6409 RF Connector LB MB CON6404 CON6402 Duplexer U6423 BOTTOM ...

Страница 19: ...TX Path B1 B2 B3 B4 B34 B39 BOTTOM Transceriver MB HB PAmid U6403 Diplexer MB HB U6410 Main diplexer U6401 DPDT U6409 RF Connector LB MB CON6404 CON6402 ...

Страница 20: ...TX Path B7 B38 B40 B41 BOTTOM MB HB PAmid U6403 Low Pass Filter U6402 Main diplexer U6414 B3 4x4 B32 H DPDT U6425 B3 4x4 B32 H RF Connector HB CON6401 CON6403 Transcerive r ...

Страница 21: ...TX Path B30 WW BOTTOM MB HB PAmid U6403 Transcerive r Duplexer Filter U6419 Low Pass Filter U6402 Main diplexer U6414 B3 4x4 B32 H DPDT U6425 B3 4x4 B32 H RF Connector HB CON6401 CON6403 ...

Страница 22: ...TX Path B7 ULCA RFM 9 BOTTOM Transcerive r B7 PA U6418 Duplexer U6417 MB HB PAmid U6403 Low Pass Filter U6402 DPDT U6425 B3 4x4 B32 H ...

Страница 23: ...Key Components DCDC for PA DCDC converter U6301 WW HB MB Tx TW All band 3G 4G DCDC converter U6302 WW B7 PA SKY77781 and LB Pamid TW NC ...

Страница 24: ...LB PRX Path B5 B18 B19 B26 GSM850 BOTTOM DPDT U6409 Main diplexer U6401 RF Connector LB MB CON6404 CON6402 LB PAmid U6421 LB LNA U6601 Transceriver ...

Страница 25: ...LB PRX Path B8 GSM900 BOTTOM DPDT U6409 Main diplexer U6401 RF Connector LB MB CON6404 CON6402 LB PAmid U6421 LB LNA U6601 Transceriver ...

Страница 26: ...LB PRX Path B20 BOTTOM DPDT U6409 Main diplexer U6401 RF Connector LB MB CON6404 CON6402 LB PAmid U6421 LB LNA U6601 Transceriver ...

Страница 27: ...LB PRX Path B28A BOTTOM DPDT U6409 Main diplexer U6401 LB PAmid U6421 LB LNA U6601 RF Connector LB MB CON6404 CON6402 Duplexer U6422 Transceriver ...

Страница 28: ...LB PRX Path B28B BOTTOM DPDT U6409 Main diplexer U6401 LB PAmid U6421 LB LNA U6601 RF Connector LB MB CON6404 CON6402 Duplexer U6423 Transceriver ...

Страница 29: ...LB PRX Path B12 B17 WW BOTTOM DPDT U6409 Main diplexer U6401 RF Connector LB MB CON6404 CON6402 LB PAmid U6421 LB LNA U6601 Transceriver ...

Страница 30: ...LB PRX Path B29 WW BOTTOM DPDT U6409 Main diplexer U6401 RF Connector LB MB CON6404 CON6402 LB PAmid U6421 LB LNA U6601 SAW Filter U6424 Transceriver ...

Страница 31: ...MB PRX Path B1 B4 BOTTOM Transceriver Main diplexer U6401 RF Connector LB MB CON6404 CON6402 DPDT U6409 Diplexer U6410 MB HB PAmid U6403 MB HB LNA U6605 ...

Страница 32: ...MB PRX Path B2 PCS BOTTOM RF Connector LB MB CON6404 CON6402 MB HB LNA U6605 Main diplexer U6401 DPDT U6409 MB HB PAmid U6403 Diplexer U6410 Transceriver ...

Страница 33: ...MB PRX Path B34 WW BOTTOM RF Connector LB MB CON6404 CON6402 MB HB LNA U6605 DPDT U6409 Diplexer U6410 MB HB PAmid U6403 Main diplexer U6401 Transceriver ...

Страница 34: ...MB PRX Path B39 BOTTOM RF Connector LB MB CON6404 CON6402 MB HB LNA U6605 DPDT U6409 Diplexer U6410 MB HB PAmid U6403 Main diplexer U6401 Transceriver ...

Страница 35: ...MB PRX Path B3 DCS signal path 0 2 BOTTOM RF Connector LB MB CON6404 CON6402 MB HB LNA U6605 DPDT U6409 Diplexer U6410 MB HB PAmid U6403 Main diplexer U6401 Transceriver ...

Страница 36: ...RX Path B3_4x4 signal path 4 6 BOTTOM DPDT U6425 B3 4x4 B32 H RF Connector HB CON6401 CON6403 Main diplexer U6414 B3 4x4 B32 H MB HB PAmid U6403 Diplexer U6420 SAW Filter U6404 MB HB LNA U6605 Transceriver ...

Страница 37: ...HB PRX Path B7 signal path 0 2 BOTTOM DPDT U6425 B3 4x4 B32 H RF Connector HB CON6401 CON6403 Low Pass Filter U6402 Main diplexer U6414 B3 4x4 B32 H MB HB PAmid U6403 MB HB LNA U6605 Transceriver ...

Страница 38: ...HB PRX Path B7_4x4 signal path 4 6 BOTTOM RF Connector LB MB CON6404 CON6402 DPDT U6409 Diplexer U6410 Main diplexer U6401 SAW Filter U6412 MB HB LNA U6605 Transceriver ...

Страница 39: ...Path B7 ULCA signal path 8 10 BOTTOM DPDT U6425 B3 4x4 B32 H RF Connector HB CON6401 CON6403 Low Pass Filter U6402 Main diplexer U6414 B3 4x4 B32 H MB HB PAmid U6403 Duplexer U6417 MB HB LNA U6605 Transceriver ...

Страница 40: ...HB PRX Path B38 B41 BOTTOM DPDT U6425 B3 4x4 B32 H RF Connector HB CON6401 CON6403 Low Pass Filter U6402 Main diplexer U6414 B3 4x4 B32 H MB HB PAmid U6403 MB HB LNA U6605 Transceriver ...

Страница 41: ...PRX Path B40 BOTTOM DPDT U6425 B3 4x4 B32 H RF Connector HB CON6401 CON6403 Low Pass Filter U6402 Main diplexer U6414 B3 4x4 B32 H MB HB PAmid U6403 MB HB LNA U6605 Transceriver ...

Страница 42: ...HB PRX Path B30 WW BOTTOM DPDT U6425 B3 4x4 B32 H RF Connector HB CON6401 CON6403 Low Pass Filter U6402 Main diplexer U6414 B3 4x4 B32 H MB HB PAmid U6403 MB HB LNA U6605 Duplexer U6419 Transceriver ...

Страница 43: ...MB PRX Path B32 WW BOTTOM DPDT U6425 B3 4x4 B32 H RF Connector HB CON6401 CON6403 Main diplexer U6414 B3 4x4 B32 H MB HB PAmid U6403 Diplexer U6420 SAW Filter U6602 MB HB LNA U6605 Transceriver ...

Страница 44: ...LB DRX Path B5 B18 B19 B26 BOTTOM Transceriver DPDT U6804 Diplexer U6801 DiFEM U6802 LNA U6832 Diversity Connector LB MB CON6804 ...

Страница 45: ...LB DRX Path B8 BOTTOM DPDT U6804 Diplexer U6801 DiFEM U6802 LNA U6832 Diversity Connector LB MB CON6804 Transceriver ...

Страница 46: ...LB DRX Path B20 BOTTOM DPDT U6804 Diplexer U6801 DiFEM U6802 LNA U6832 Diversity Connector LB MB CON6804 Transceriver ...

Страница 47: ...LB DRX Path B12 B17 WW BOTTOM Transceriver DPDT U6804 Diplexer U6801 DiFEM U6802 LNA U6832 Diversity Connector LB MB CON6804 ...

Страница 48: ...LB DRX Path B28A B28B BOTTOM DPDT U6804 Diplexer U6801 DiFEM U6802 LNA U6832 Diversity Connector LB MB CON6804 SAW Filter U6835 Transceriver ...

Страница 49: ...LB DRX Path B29 WW BOTTOM Transceriver DPDT U6804 Diplexer U6801 DiFEM U6802 LNA U6832 Diversity Connector LB MB CON6804 ...

Страница 50: ...MB DRX Path B1 B4 BOTTOM Diversity Connector LB MB CON6804 DPDT U6804 Diplexer U6801 DiFEM U6802 LNA U6814 Transceriver ...

Страница 51: ...MB DRX Path B2 BOTTOM Diversity Connector LB MB CON6804 DPDT U6804 Diplexer U6801 DiFEM U6802 LNA U6814 Transceriver ...

Страница 52: ...MB DRX Path B34 WW BOTTOM DPDT U6804 Diplexer U6801 DiFEM U6802 LNA U6814 Diversity Connector LB MB CON6804 SAW Filter U6807 Transceriver ...

Страница 53: ...DRX Path B39 BOTTOM DPDT U6804 Diplexer U6801 DiFEM U6802 LNA U6814 Diversity Connector LB MB CON6804 Transceriver ...

Страница 54: ...MB DRX Path B3 signal path 1 3 BOTTOM DPDT U6804 Diplexer U6801 DiFEM U6802 LNA U6814 Diversity Connector LB MB CON6804 Transceriver ...

Страница 55: ...MB DRX Path B3_4x4MIMO signal path 8 9 DPDT U6804 Diplexer U6801 DiFEM U6802 Diversity Connector LB MB CON6804 LNA U6814 Transceriver Dual SAW Filter U6805 ...

Страница 56: ...MB DRX Path B3 _4x4MIMO signal path 5 7 Diversity Connector HB CON6803 DPDT U6839 DiFEM U6802 LNA U6814 Diplexer U6803 Dual SAW Filter U6831 Transceriver BOTTOM ...

Страница 57: ...HB DRX Path B7 signal path 1 3 BOTTOM Diversity Connector HB CON6803 DPDT U6839 DiFEM U6802 LNA U6814 Transceriver ...

Страница 58: ...HB DRX Path B7_4x4MIMO signal path 16 17 Diversity Connector HB CON6803 DPDT U6839 DiFEM U6802 LNA U6814 Diplexer U6803 Dual SAW Filter U6831 Transceriver BOTTOM ...

Страница 59: ...DPDT U6804 Diplexer U6801 DiFEM U6802 Diversity Connector LB MB CON6804 LNA U6814 Transceriver Dual SAW Filter U6805 HB DRX Path B7 _4x4MIMO signal path 5 7 ...

Страница 60: ...HB DRX Path B38 B41 BOTTOM Diversity Connector HB CON6803 DPDT U6839 DiFEM U6802 LNA U6814 Transceriver ...

Страница 61: ...HB DRX Path B40 WW BOTTOM Diversity Connector HB CON6803 DPDT U6839 DiFEM U6802 LNA U6814 SPDT U6836 Transceriver ...

Страница 62: ...HB DRX Path B40 TW BOTTOM Diversity Connector HB CON6803 DPDT U6839 DiFEM U6802 LNA U6814 Transceriver ...

Страница 63: ...HB DRX Path B30 WW BOTTOM Diversity Connector HB CON6803 DPDT U6839 DiFEM U6802 LNA U6814 SPDT U6836 SAW Filter U6837 Transceriver ...

Страница 64: ...HB DRX Path B32 WW Diversity Connector HB CON6803 DPDT U6839 DiFEM U6802 LNA U6814 Diplexer U6803 SAW Filter U6806 Transceriver BOTTOM ...

Страница 65: ...WIFI BT GPS 5G Block Diagram 1 2 BT WiFi GPS 5G Antenna CH0 Coupler Tripelxer GPS SAW GPS LNA GPS SAW SDR845 5GHz SPDT LAA PRX WIFI 5GHz SPDT WCN3990 QLN1030 2 4GHz ...

Страница 66: ...WIFI BT GPS 5G Block Diagram 2 2 BT WiFi 5G Antenna CH1 Coupler Dipelxer SDR845 5GHz SPDT LAA DRX WIFI 5GHz SPDT WCN3990 QLN1030 2 4GHz ...

Страница 67: ...nts 5G BT Wi Fi GPS NFC 1 2 CH0 Coupler GPS 2 4G 5G U6113 CH0 Triplexer GPS 2 4G 5G U6101 GPS SAW U6103 GPS LNA U6104 CH0 SPDT WIFI LTEU PRX U6109 WCN3990 WIFI CHIP U6001 GPS SAW U6112 WiFi 5G CH0 Tx Rx SPDT U6115 ...

Страница 68: ...Key Components 5G BT Wi Fi GPS NFC 2 2 CH1 SPDT WIFI LTEU DRX U6107 NFC IC U5401 WCN3990 WIFI CHIP U6001 CH1 Coupler 2 4G 5G U6116 CH1 Diplexer 2 4G 5G U6106 WiFi 5G CH1 Tx Rx SPDT U6115 ...

Страница 69: ...GPS Path BOTTOM TOP Antenna Ant6101 CH0 Coupler U6113 CH0 Triplexer U6101 GPS SAW U6103 GPS LNA U6104 GPS SAW U6112 BOTTOM Transceriver ...

Страница 70: ...WiFi 2 4G BT CH0 BOTTOM TOP Antenna Ant6101 CH0 Coupler U6113 CH0 Triplexer U6101 GPS SAW U6114 WCN3990 WIFI CHIP U6001 ...

Страница 71: ...WiFi 2 4G CH1 BOTTOM Antenna Ant6103 TOP CH1 Coupler U6116 CH1 Diplexer U6106 SAW U6117 WCN3990 WIFI CHIP U6001 ...

Страница 72: ...WiFi 5G CH0 WW Antenna Ant6101 CH0 Coupler U6113 CH0 Triplexer U6101 SAW U6110 WCN3990 WIFI CHIP U6001 BOTTOM TOP SPDT U6109 SPDT U6115 WIFI 5G CH0 RX WIFI 5G CH0 TX ...

Страница 73: ...WiFi 5G CH0 TW Antenna Ant6101 CH0 Coupler U6113 CH0 Triplexer U6101 SAW U6110 WCN3990 WIFI CHIP U6001 BOTTOM SPDT U6115 TOP WIFI 5G CH0 RX WIFI 5G CH0 TX ...

Страница 74: ...WiFi 5G CH1 WW Antenna Ant6103 CH1 Coupler U6116 CH1 Diplexer U6106 SAW U6111 WCN3990 WIFI CHIP U6001 BOTTOM TOP SPDT U6118 WIFI 5G CH1 RX WIFI 5G CH1 TX SPDT U6107 ...

Страница 75: ...WiFi 5G CH1 TW Antenna Ant6103 CH1 Coupler U6116 CH1 Diplexer U6106 SAW U6111 WCN3990 WIFI CHIP U6001 BOTTOM TOP SPDT U6118 WIFI 5G CH1 RX WIFI 5G CH1 TX ...

Страница 76: ...PRX Path LAA PRx WW Antenna Ant6101 CH0 Coupler U6113 CH0 Triplexer U6101 SAW U6110 LNA U6605 BOTTOM TOP SPDT U6109 BOTTOM ...

Страница 77: ...DRX Path LAA DRx WW Antenna Ant6103 CH1 Coupler U6116 CH1 Diplexer U6106 SAW U6111 LNA U6814 TOP SPDT U6107 BOTTOM BOTTOM ...

Страница 78: ...Draco_ZS620KL NFC Trouble Shooting 2018 03 26 Angela Wu 29966 ...

Страница 79: ...NFC chip_MB Top 紅色 NFC chip NFC週邊電路元件上件粉紅色 NFC週邊電路元件不上件黃色 NFC matching 元件上件深藍色 NFC matching 元件不上件 NFC Chip U5401 NFC chip ...

Страница 80: ...NFC chip_MB Bot 淺藍色 NFC FPC天線彈片 ANT5501 ANT5502 ...

Страница 81: ...NFC NFC chip NFC週邊電路元件上件 NFC週邊電路元件不上件 NFC matching 元件上件 NFC matching 元件不上件 NFC chip NFC chip ...

Страница 82: ...NFC LDS Antenna NFC FPC antenna spring ANT5501 ANT5502 1 Check the spring deformation or not the spring angle 60 degrees ...

Страница 83: ...NFC LDS TOP BOT 2 Check the two pads short or not 3 Check the Ferrite pattern is wrong or not Ferrite NFC spring connect location ...

Страница 84: ...Device The Screw near NFC spring 4 Check whether the 5 screws shown on the left icon are locked ...

Страница 85: ...Upside antenna assembly considerations ...

Страница 86: ...a location map Feed M H B32 Front Camera Speaker Vibrator LDS pattern Rear Camera Feed L M H Feed GPS Wifi 0 5G0 Feed Wifi1 5G1 L LTE B5 B8 B20 B28 Tx Rx M LTE B1 B3 Tx Rx H LTE B7 Tx Rx M LTE B1 B3 Rx only H LTE B7 Rx only ...

Страница 87: ... B28 B7 Rx B1 3 3 If the area is abnormal the signals that will affect are GPS wifi 2 4G chain0 4 If the area is abnormal the signals that will affect are LTE TxRx B5 B8 B20 B28 B7 Rx B1 3 GPS wifi 2 4G 5G chain0 5 If the area is abnormal the signals that will affect are LTE TxRx B5 B8 B20 B28 B7 Rx B1 3 4 5 Marked position please keep it clean to avoid poor contact ...

Страница 88: ...Motherboard considerations Bottom side B3 H B32 spring GPS Wifi0 spring L M B7 spring 5G0 Spring deformation Wifi1 5G1 H If the deformation of the spring will affect the test results Normal spring ...

Страница 89: ...B3 H B32 0 ohm Component offset or Cold soldering will cause M H B32 test fail Bottom side 0 ohm 3 9 nH 2 4 pF ...

Страница 90: ... sure there is no stain in the copper foil area a Make sure the EMI gasket is connected to the yellow mark on the motherboard b Make sure the EMI gasket is connected to the blue mark on the motherboard A frame Make sure frame is no stain Top side ...

Страница 91: ...L M B7 0 ohm 0 5 pF 8 2 nH 2 4 pF 2 7 nH 0 3 pF Bottom side Component offset or cold soldering will cause L M B7 test fail If the deformation of the spring will affect the M H ...

Страница 92: ...L M B7 B case LDS Confirm Laser Direct Structuring antenna broken or not If the case is abnormal the signals that will affect are LTE B1 B3 B7 ...

Страница 93: ...GPS Wifi0 If the deformation of the spring will affect the 5G 1 8 nH 1 8 pF 0 ohm 3 6 nH Component offset or cold soldering will cause GPS wifi0 5G0 test fail ...

Страница 94: ...GPS Wifi0注意事項 B殼LDS This gap can not be shorted Confirm Laser Direct Structuring antenna broken or not If the case is abnormal the signals that will affect are 5G0 pattern ...

Страница 95: ...Wifi1 0 ohm Component offset or cold soldering will cause wifi1 5G1 test fail If the deformation of the spring will affect the 2 4G1 5G1 ...

Страница 96: ...Wifi1 B cover LDS Confirm Laser Direct Structuring antenna broken or not This gap can not be shorted ...

Страница 97: ...Downside antenna assembly considerations ...

Страница 98: ...Check the EMI gasket is affixed to the correct location ...

Страница 99: ...Check the screws are locked Check the LDS missing or not ...

Страница 100: ...Check whether the spring is conductive with the LDS and the spring is not loosened ...

Страница 101: ...18n 15n 0 ohm 0 ohm 0 ohm 0 ohm 1n 2 2p QAT Check the component missing or not QAT parts ...

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