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Asus ZS620KL Troubleshooting Manual

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ASUS ZS620KL
RF Hardware Trouble Shooting
Guide

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  Summary of Contents for Asus ZS620KL

  • Page 1 ASUS ZS620KL RF Hardware Trouble Shooting Guide...
  • Page 2 ZS620KL Supported Bands (WW) GSM850/EGSM/DCS/PCS WCDMA B1/B2/B5(B6/B19)/B8 TDSCDMA B34/B39 CDMA 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...
  • Page 3 ZS620KL Supported Bands (TW) GSM850/EGSM/DCS/PCS WCDMA B1/B2/B5(B6/B19)/B8 LTE-FDD B1/B2/B3/B5/B7/B8/B18/B19/ B20/B26/B28A/B28B/ LTE-TDD B38/B39/B40/B41 4*4MIMO B3/B7...
  • Page 4 RF Block Diagram:2G/3G/4G System...
  • Page 5 Tx/PRx path block diagram B32 PRx Con6401 Diplexer HB TRx HB Tx U6414 HB/MB Pamid U6403 MB Tx QM77031 MB TRx HB PRx Con6402 HB/MB LNAs Diplexer U6605 MB PRx U6401 U6201 QLN-1030 2G MB Tx SDR845 LB Tx LB/2G Pamid LB TRx U6421 2G Tx...
  • Page 6 DRx path block diagram Con6803 HB DRx HB DRx HB/MB LNAs MB DRx MB DRx U6814 Con6804 QLN-1030 Diplexer U6201 U6801 SDR845 DRx DiFEM U6802 LB DRx LB DRx LB LNAs U6832 QLN-1020 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...
  • Page 7 Antenna Port定義 L/M + H Band + +B32 CON6804 CON6803 Main Main H Band+ +B32 L/M + CON6402 CON6401 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...
  • Page 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...
  • Page 9 ULCA Path 1. FBRX & 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...
  • Page 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"...
  • Page 11 DL CA路徑(II) PRX OLN1030  B7(會有18條signal path) DRX OLN1030 B7 CA : When the B3(4*4)+B7 combination is used, it is use HB upside antenna, so the position is "6"...
  • Page 12 Key Components : Tx/PRx RF Connector HB CON6403 CON6401 RF Connector LB/MB CON6404 CON6402 Main diplexer U6414 ( B3*(4x4)+B32/H ) Main diplexer U6401 (L/B32 & M/H) MB/HB PAmid U6403 LB/2G PAmid U6421 B7 PA U6418 MB/HB QLN1030 U6605 LB QLN1020 U6601...
  • Page 13 Key Components : DRx DiFEM U6802 DRX MB/HB QLN1030 U6814 DRX LB QLN1020 U6814 Div. RF connector LB/MB Transceri CON6804 Div. RF connector HB CON6803 Diversity diplexer U6801 (L/M&B32)
  • Page 14 TX Path : GSM 850/900 BOTTOM Main diplexer U6401 DPDT U6409 Transceriver LB PAmid U6421 RF Connector LB/MB CON6404 CON6402...
  • Page 15 TX Path : GSM DCS/PCS BOTTOM RF Connector LB/MB CON6404 CON6402 Main diplexer U6401 Diplexer MB/HB U6410 Transceriver MB/HB PAmid U6403 LB PAmid U6421 DPDT U6409...
  • Page 16 TX Path : B5/B8/(B12/B17)/B18/B19/B20/B26/BC0 BOTTOM Main diplexer U6401 DPDT U6409 LB PAmid U6421 RF Connector LB/MB CON6404 CON6402 Transceriver CH0 LB TX input...
  • Page 17 TX Path : B28A BOTTOM Main diplexer U6401 LB PAmid U6421 Transceriver Duplexer U6422 DPDT U6409 RF Connector LB/MB CON6404 CON6402...
  • Page 18 TX Path : B28B BOTTOM Main diplexer U6401 LB PAmid U6421 Transceriver Duplexer U6423 DPDT U6409 RF Connector LB/MB CON6404 CON6402...
  • Page 19 TX Path : B1/B2/B3/(B4/B34)/B39 BOTTOM Main diplexer U6401 Diplexer MB/HB U6410 Transceriver MB/HB PAmid U6403 DPDT U6409 RF Connector LB/MB CON6404 CON6402...
  • Page 20 TX Path : B7/B38/B40/B41 BOTTOM Main diplexer U6414 ( B3*(4x4)+B32/H ) MB/HB PAmid U6403 Transcerive Low Pass Filter U6402 DPDT U6425 ( B3*(4x4)+B32/H ) RF Connector HB CON6401 CON6403...
  • Page 21 TX Path : B30(WW BOTTOM Main diplexer U6414 ( B3*(4x4)+B32/H ) MB/HB PAmid U6403 Transcerive Duplexer Filter U6419 Low Pass Filter U6402 DPDT U6425 ( B3*(4x4)+B32/H ) RF Connector HB CON6401 CON6403...
  • Page 22 TX Path : ULCA (RFM=9) BOTTOM B7 PA U6418 Transcerive Duplexer U6417 MB/HB PAmid U6403 Low Pass Filter U6402 DPDT U6425 ( B3*(4x4)+B32/H )
  • Page 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...
  • Page 24 LB PRX Path : B5/B18/B19/B26/GSM850 BOTTOM Main diplexer U6401 DPDT U6409 Transceriver LB PAmid U6421 LB LNA U6601 RF Connector LB/MB CON6404 CON6402...
  • Page 25 LB PRX Path : B8/GSM900 BOTTOM Main diplexer U6401 DPDT U6409 Transceriver LB PAmid U6421 LB LNA U6601 RF Connector LB/MB CON6404 CON6402...
  • Page 26 LB PRX Path : B20 BOTTOM Main diplexer U6401 DPDT U6409 Transceriver LB PAmid U6421 LB LNA U6601 RF Connector LB/MB CON6404 CON6402...
  • Page 27 LB PRX Path : B28A BOTTOM Main diplexer U6401 DPDT U6409 Transceriver LB PAmid U6421 LB LNA U6601 RF Connector LB/MB CON6404 CON6402 Duplexer U6422...
  • Page 28 LB PRX Path : B28B BOTTOM Main diplexer U6401 DPDT U6409 Transceriver LB PAmid U6421 LB LNA U6601 RF Connector LB/MB CON6404 CON6402 Duplexer U6423...
  • Page 29 LB PRX Path : B12/B17(WW) BOTTOM Main diplexer U6401 DPDT U6409 Transceriver LB PAmid U6421 LB LNA U6601 RF Connector LB/MB CON6404 CON6402...
  • Page 30 LB PRX Path : B29(WW) BOTTOM Main diplexer U6401 DPDT U6409 Transceriver LB PAmid U6421 LB LNA U6601 RF Connector LB/MB CON6404 CON6402 SAW Filter U6424...
  • Page 31 MB PRX Path : B1/(B4) BOTTOM Main diplexer U6401 DPDT U6409 Transceriver Diplexer U6410 MB/HB LNA U6605 MB/HB PAmid U6403 RF Connector LB/MB CON6404 CON6402...
  • Page 32 MB PRX Path : B2/PCS BOTTOM Main diplexer U6401 DPDT U6409 Transceriver Diplexer U6410 MB/HB LNA U6605 MB/HB PAmid U6403 RF Connector LB/MB CON6404 CON6402...
  • Page 33 MB PRX Path : B34 (WW) BOTTOM Main diplexer U6401 DPDT U6409 Transceriver Diplexer U6410 MB/HB LNA U6605 MB/HB PAmid U6403 RF Connector LB/MB CON6404 CON6402...
  • Page 34 MB PRX Path : B39 BOTTOM Main diplexer U6401 DPDT U6409 Transceriver Diplexer U6410 MB/HB LNA U6605 MB/HB PAmid U6403 RF Connector LB/MB CON6404 CON6402...
  • Page 35 MB PRX Path : B3/DCS (signal path=0,2) BOTTOM Main diplexer U6401 DPDT U6409 Transceriver Diplexer U6410 MB/HB LNA U6605 MB/HB PAmid U6403 RF Connector LB/MB CON6404 CON6402...
  • Page 36 MB PRX Path : B3_4x4 (signal path=4,6) BOTTOM Main diplexer U6414 ( B3*(4x4)+B32/H ) MB/HB PAmid U6403 DPDT U6425 ( B3*(4x4)+B32/H ) Transceriver RF Connector HB CON6401 CON6403 Diplexer U6420 SAW Filter U6404 MB/HB LNA U6605...
  • Page 37 HB PRX Path : B7 (signal path=0,2) BOTTOM Main diplexer U6414 ( B3*(4x4)+B32/H ) MB/HB PAmid U6403 Transceriver DPDT U6425 ( B3*(4x4)+B32/H ) RF Connector HB CON6401 CON6403 Low Pass Filter U6402 MB/HB LNA U6605...
  • Page 38 HB PRX Path : B7_4x4 (signal path=4,6) BOTTOM Main diplexer U6401 DPDT U6409 Transceriver Diplexer U6410 MB/HB LNA U6605 RF Connector LB/MB CON6404 CON6402 SAW Filter U6412...
  • Page 39 HB PRX Path : B7 ULCA (signal path=8,10) BOTTOM Main diplexer U6414 ( B3*(4x4)+B32/H ) MB/HB PAmid U6403 DPDT U6425 ( B3*(4x4)+B32/H ) Transceriver RF Connector HB CON6401 CON6403 Low Pass Filter U6402 Duplexer U6417 MB/HB LNA U6605...
  • Page 40 HB PRX Path : B38/B41 BOTTOM Main diplexer U6414 ( B3*(4x4)+B32/H ) MB/HB PAmid U6403 DPDT U6425 ( B3*(4x4)+B32/H ) Transceriver RF Connector HB CON6401 CON6403 Low Pass Filter U6402 MB/HB LNA U6605...
  • Page 41 PRX Path : B40 BOTTOM Main diplexer U6414 ( B3*(4x4)+B32/H ) MB/HB PAmid U6403 DPDT U6425 ( B3*(4x4)+B32/H ) Transceriver RF Connector HB CON6401 CON6403 Low Pass Filter U6402 MB/HB LNA U6605...
  • Page 42 HB PRX Path : B30 (WW) BOTTOM Main diplexer U6414 ( B3*(4x4)+B32/H ) MB/HB PAmid U6403 DPDT U6425 Transceriver ( B3*(4x4)+B32/H ) RF Connector HB CON6401 CON6403 Low Pass Filter U6402 MB/HB LNA U6605 Duplexer U6419...
  • Page 43 MB PRX Path : B32(WW) BOTTOM Main diplexer U6414 ( B3*(4x4)+B32/H ) MB/HB PAmid U6403 DPDT U6425 ( B3*(4x4)+B32/H ) Transceriver RF Connector HB CON6401 CON6403 Diplexer U6420 SAW Filter U6602 MB/HB LNA U6605...
  • Page 44 LB DRX Path : B5/B18/B19/B26 BOTTOM DiFEM U6802 Diplexer U6801 DPDT U6804 U6832 Diversity Connector LB/MB Transceriver CON6804...
  • Page 45 LB DRX Path : B8 BOTTOM DiFEM U6802 Diplexer U6801 DPDT U6804 U6832 Diversity Connector LB/MB Transceriver CON6804...
  • Page 46 LB DRX Path : B20 BOTTOM DiFEM U6802 Diplexer U6801 DPDT U6804 U6832 Diversity Connector LB/MB Transceriver CON6804...
  • Page 47 LB DRX Path : B12/B17 (WW) BOTTOM DiFEM U6802 Diplexer U6801 DPDT U6804 U6832 Diversity Connector LB/MB Transceriver CON6804...
  • Page 48 LB DRX Path : B28A/B28B BOTTOM DiFEM U6802 Diplexer U6801 DPDT U6804 U6832 Diversity Connector LB/MB Transceriver CON6804 SAW Filter U6835...
  • Page 49 LB DRX Path : B29 (WW) BOTTOM DiFEM U6802 Diplexer U6801 DPDT U6804 U6832 Diversity Connector LB/MB Transceriver CON6804...
  • Page 50 MB DRX Path : B1/(B4) BOTTOM DiFEM U6802 Diplexer U6801 DPDT U6804 U6814 Diversity Connector LB/MB Transceriver CON6804...
  • Page 51 MB DRX Path : B2 BOTTOM DiFEM U6802 Diplexer U6801 DPDT U6804 U6814 Diversity Connector LB/MB Transceriver CON6804...
  • Page 52 MB DRX Path : B34 (WW) BOTTOM DiFEM U6802 Diplexer U6801 DPDT U6804 U6814 Diversity Connector LB/MB Transceriver CON6804 SAW Filter U6807...
  • Page 53 DRX Path : B39 BOTTOM DiFEM U6802 Diplexer U6801 DPDT U6804 U6814 Diversity Connector LB/MB Transceriver CON6804...
  • Page 54 MB DRX Path : B3 (signal path=1,3) BOTTOM DiFEM U6802 Diplexer U6801 DPDT U6804 U6814 Diversity Connector LB/MB Transceriver CON6804...
  • Page 55 MB DRX Path : B3_4x4MIMO (signal path=8,9) DiFEM U6802 Diplexer U6801 DPDT U6804 U6814 Diversity Connector LB/MB Transceriver CON6804 Dual SAW Filter U6805...
  • Page 56 MB DRX Path : B3*_4x4MIMO (signal path=5,7) BOTTOM DiFEM U6802 Diversity Connector HB CON6803 DPDT U6839 U6814 Transceriver Diplexer U6803 Dual SAW Filter U6831...
  • Page 57 HB DRX Path : B7 (signal path=1,3) BOTTOM DiFEM U6802 Diversity Connector HB CON6803 DPDT U6839 U6814 Transceriver...
  • Page 58 HB DRX Path : B7_4x4MIMO (signal path=16,17) BOTTOM DiFEM U6802 Diversity Connector HB CON6803 DPDT U6839 U6814 Transceriver Diplexer U6803 Dual SAW Filter U6831...
  • Page 59 HB DRX Path : B7*_4x4MIMO (signal path=5,7) DiFEM U6802 Diplexer U6801 DPDT U6804 U6814 Diversity Connector LB/MB Transceriver CON6804 Dual SAW Filter U6805...
  • Page 60 HB DRX Path : B38/B41 BOTTOM DiFEM U6802 Diversity Connector HB CON6803 DPDT U6839 U6814 Transceriver...
  • Page 61 HB DRX Path : B40 (WW) BOTTOM DiFEM U6802 Diversity Connector HB CON6803 DPDT U6839 U6814 Transceriver SPDT U6836...
  • Page 62 HB DRX Path : B40 (TW) BOTTOM DiFEM U6802 Diversity Connector HB CON6803 DPDT U6839 U6814 Transceriver...
  • Page 63 HB DRX Path : B30 (WW) BOTTOM DiFEM U6802 Diversity Connector HB CON6803 DPDT U6839 U6814 Transceriver SPDT U6836 SAW Filter U6837...
  • Page 64 HB DRX Path : B32 (WW) BOTTOM DiFEM U6802 Diversity Connector HB CON6803 DPDT U6839 U6814 Transceriver Diplexer U6803 SAW Filter U6806...
  • Page 65 WIFI/BT/GPS/5G Block Diagram(1/2) CH0: BT/WiFi/GPS/5G Antenna GPS LNA GPS SAW GPS SAW Coupler SDR845 LAA PRX QLN1030 5GHz SPDT WIFI 5GHz Tripelxer SPDT WCN3990 2.4GHz...
  • Page 66 WIFI/BT/GPS/5G Block Diagram(2/2) CH1: BT/WiFi/5G Antenna Coupler SDR845 LAA DRX QLN1030 5GHz SPDT WIFI 5GHz Dipelxer SPDT WCN3990 2.4GHz...
  • Page 67 Components : 5G/BT/Wi-Fi/GPS/NFC (1/2) CH0 Triplexer GPS/2.4G/5G U6101 CH0 Coupler GPS/2.4G/5G U6113 WCN3990 (WIFI CHIP) U6001 CH0 SPDT WIFI/LTEU PRX U6109 GPS SAW U6103 WiFi 5G CH0 Tx/Rx SPDT U6115 GPS LNA U6104 GPS SAW U6112...
  • Page 68 Key Components : 5G/BT/Wi-Fi/GPS/NFC (2/2) CH1 Coupler 2.4G/5G U6116 CH1 Diplexer 2.4G/5G U6106 CH1 SPDT WIFI/LTEU DRX U6107 WiFi 5G CH1 Tx/Rx SPDT U6115 WCN3990 (WIFI CHIP) U6001 NFC IC U5401...
  • Page 69 GPS Path BOTTOM CH0 Triplexer U6101 Antenna Ant6101 CH0 Coupler U6113 BOTTOM GPS SAW U6103 GPS LNA U6104 Transceriver GPS SAW U6112...
  • Page 70 WiFi 2.4G/BT (CH0) BOTTOM CH0 Triplexer U6101 Antenna Ant6101 CH0 Coupler U6113 GPS SAW U6114 WCN3990 (WIFI CHIP) U6001...
  • Page 71 WiFi 2.4G (CH1) BOTTOM CH1 Diplexer U6106 Antenna Ant6103 CH1 Coupler U6116 U6117 WCN3990 (WIFI CHIP) U6001...
  • Page 72 WiFi 5G (CH0) (WW) BOTTOM CH0 Triplexer U6101 Antenna Ant6101 CH0 Coupler U6113 U6110 WIFI 5G CH0 RX WCN3990 (WIFI CHIP) U6001 SPDT U6109 WIFI 5G CH0 TX SPDT U6115...
  • Page 73 WiFi 5G (CH0) (TW) BOTTOM CH0 Triplexer U6101 Antenna Ant6101 CH0 Coupler U6113 U6110 WIFI 5G CH0 RX WCN3990 (WIFI CHIP) U6001 SPDT U6115 WIFI 5G CH0 TX...
  • Page 74 WiFi 5G (CH1) (WW) BOTTOM CH1 Diplexer U6106 Antenna Ant6103 CH1 Coupler U6116 U6111 WIFI 5G CH1 RX WCN3990 (WIFI CHIP) U6001 SPDT U6118 WIFI 5G CH1 TX SPDT U6107...
  • Page 75 WiFi 5G (CH1) (TW) BOTTOM CH1 Diplexer U6106 Antenna Ant6103 CH1 Coupler U6116 U6111 WIFI 5G CH1 RX WCN3990 (WIFI CHIP) U6001 SPDT U6118 WIFI 5G CH1 TX...
  • Page 76 PRX Path : LAA PRx (WW) BOTTOM CH0 Triplexer U6101 Antenna Ant6101 CH0 Coupler U6113 BOTTOM U6110 U6605 SPDT U6109...
  • Page 77 DRX Path : LAA DRx (WW) BOTTOM CH1 Diplexer U6106 Antenna Ant6103 CH1 Coupler U6116 BOTTOM U6111 U6814 SPDT U6107...
  • Page 78 Draco_ZS620KL NFC Trouble Shooting 2018.03.26 Angela, Wu #29966...
  • Page 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) Chip chip U5401...
  • Page 80 NFC chip_MB (Bot.) 淺藍色:NFC FPC天線彈片 ANT5501 ANT5502...
  • Page 81 :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) chip chip...
  • Page 82 NFC LDS Antenna ANT5501 NFC FPC antenna spring ANT5502 1. Check the spring deformation or not? the spring angle ≧ 60 degrees...
  • Page 83 NFC LDS NFC spring connect location Ferrite 2. Check the two pads short or not 3. Check the Ferrite pattern is wrong or not...
  • Page 84 Device 4. Check whether the 5 screws shown on the left icon are locked The Screw near NFC spring...
  • Page 85 Upside antenna assembly considerations...
  • Page 86 ZS620KL upside antenna location map Front Camera pattern Speaker Rear Camera Vibrator Feed(M*/H/B Feed(L/M/H*) Feed(GPS/Wifi Feed(Wifi1/5G1) 0/5G0) 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...
  • Page 87 1. If the area is abnormal, the signals that will affect are LTE TxRx B32/B1/B3,Rx B7 2. If the area is abnormal, the signals that will affect are LTE TxRx B5/B8/B20/B28/B7,Rx B1/3 3. If the area is abnormal, the signals that will affect are GPS/wifi 2.4G chain0.
  • Page 88 Motherboard considerations : L+M+B7* spring B3*+H+B32 spring GPS+Wifi0 spring Wifi1+5G1 If the deformation of the spring will affect the test results Spring Normal spring Bottom side deformation...
  • Page 89 B3*+H+B32 : Component offset or Cold soldering will cause M*H+B32 test fail 2.4 pF 0 ohm Bottom side 3.9 nH 0 ohm...
  • Page 90 B3*+H+B32 -Rear Camera Grounding: Make sure there is no stain in the a. Make sure the EMI gasket is connected to the yellow copper foil mark on the motherboard 。 Top side area Top side b. Make sure the EMI gasket is connected to the blue mark on the motherboard 。...
  • Page 91 L+M+B7*: Component offset or cold soldering will cause L+M+B7* test fail 0.5 pF 0 ohm 8.2 nH 2.4 pF Bottom side 0.3 pF 2.7 nH If the deformation of the spring will affect the M/H*...
  • Page 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...
  • Page 93 GPS+Wifi0: Component offset or cold soldering will cause GPS/wifi0/5G0 test fail 1.8 pF 1.8 nH 0 ohm 3.6 nH If the deformation of the spring will affect the 5G...
  • Page 94 GPS+Wifi0注意事項-B殼LDS: Confirm Laser Direct Structuring antenna broken or not If the case is abnormal, the signals that will affect are 5G0 pattern This gap can not be shorted...
  • Page 95 Wifi1: Component offset or cold soldering will cause wifi1/5G1 test fail 0 ohm If the deformation of the spring will affect the 2.4G1/5G1...
  • Page 96 Wifi1-B cover LDS: Confirm Laser Direct Structuring antenna broken or not This gap can not be shorted...
  • Page 97 Downside antenna assembly considerations...
  • Page 98 Check the EMI gasket is affixed to the correct location...
  • Page 99 Check the screws are locked Check the LDS missing or not...
  • Page 100 Check whether the spring is conductive with the LDS and the spring is not loosened.
  • Page 101 QAT parts 0 ohm 2.2p 0 ohm Check the component missing or not 0 ohm 0 ohm...