Asus A500KL TROUBLESHOOTING GUIDE
ASUS A500KL
RF Hardware Trouble Shooting Guide
PMD-HW2
Inspiring Innovation．Persistent Perfection
Outline
(*) Debug Tool Required
• Repair and Test Environment
• RF Block Diagram
• RF Calibration Repair Guide
– GSM Quad-bands Block Diagram
– GSM EGSM and GSM850
– GSM DCS and PCS
– WCDMA Quad-bands Block Diagram
– WCDMA Band1/Band2/Band5/Band8 & TD-SCDMA Band 34/39
– LTE Quad-bands Block Diagram
– LTE Band 1/3/3/7/8/19/20/28 & TD-LTE Band 38/39/40/41
– LTE Div. Rx Block Diagram
– LTE Div. Rx Band 1/3/7/8/19/20/28 & TD-LTE Div. Rx Band 38/39/40/41
(*)
• RF Test Trouble Shooting
(*)
– 2G RF Test
– 3G RF Test
– 4G RF Test
• GPS Repair Guide
• BT/WiFi Repair Guide
Inspiring Innovation．Persistent Perfection
Outline
(*) Debug Tool Required
• Repair and Test Environment
• RF Block Diagram
• RF Calibration Repair Guide
– GSM Quad-bands Block Diagram
– GSM EGSM and GSM850
– GSM DCS and PCS
– WCDMA Quad-bands Block Diagram
– WCDMA Band1/Band2/Band5/Band8 & TD-SCDMA Band 34/39
– LTE Quad-bands Block Diagram
– LTE Band 1/3/3/7/8/19/20/28 & TD-LTE Band 38/39/40/41
– LTE Div. Rx Block Diagram
– LTE Div. Rx Band 1/3/7/8/19/20/28 & TD-LTE Div. Rx Band 38/39/40/41
(*)
• RF Test Trouble Shooting
(*)
– 2G RF Test
– 3G RF Test
– 4G RF Test
• GPS Repair Guide
• BT/WiFi Repair Guide
Inspiring Innovation．Persistent Perfection
Repair and Test Environment
(*)
Inspiring Innovation．Persistent Perfection
Outline
(*) Debug Tool Required
• Repair and Test Environment
• RF Block Diagram
• RF Calibration Repair Guide
– GSM Quad-bands Block Diagram
– GSM EGSM and GSM850
– GSM DCS and PCS
– WCDMA Quad-bands Block Diagram
– WCDMA Band1/Band2/Band5/Band8
– LTE Quad-bands Block Diagram
– LTE Band3/Band7/Band8/Band20/Band28
– LTE Div. Rx Block Diagram
– LTE Div. Rx Band3/Band7/Band8/Band20/Band28
(*)
• RF Test Trouble Shooting
(*)
– 2G RF Test
– 3G RF Test
– 4G RF Test
• GPS Repair Guide
• BT/WiFi Repair Guide
Inspiring Innovation．Persistent Perfection
RF Block Diagram
LTE
GSM Tx Quad-Band
GSM Rx Quad-Band
WCDMA Band1/2/5/8
Main
Antenna
Div.
Antenna
GPS
Antenna
BT/WiFi
Antenna
Ant. SW
Ant. SW
TD-SCDMA Band34/39
TD-SCDMA Band34/39
LTE Band 1/3/7/8/19/20/28
TD-LTE Band 38/39/40/41
TD-LTE Band 38/39/40/41
LTE DRx Band1/3/7/8/19/20/28
TD-LTE DRx Band 38/39/40/41
GPS
Transceiver
&
Receive Path
BT/WiFi
FM
Inspiring Innovation．Persistent Perfection
A500KL RF Areas Top Side
FM
RF
Inspiring Innovation．Persistent Perfection
A500KL RF Areas Bottom Side
WiFi/BT Ant. Spring
GPS Ant. Spring
GPS
4G Div.
Ant. Spring
WiFi/BT
RF
2G/3G/4G Main
Ant. Spring
Inspiring Innovation．Persistent Perfection
Key components locations(Top)
GSM HB
B28
B20
B3 &GSM HB
B28A&B28B
B28b
B39
B28
B20
Transceiver
B28a
B20
B40
GPS
B7
B34/39
B3
B1
B7
B40
B8
B28A
B28B
B38/41
B34/39
Div.
B38/41
B40
Band Switch
B20
Ant. Switch
PA
Duplexer
SAW
B3
B1
B41
B2
B7
Main
Inspiring Innovation．Persistent Perfection
Key components locations(Bot)
GPS
WIFI
WCN3620
B8
B5/B8
B5
GSM
Quad
Band
B1/2/5/8
B5/B8
Band Switch
GPS LNA
PA
Duplexer
SAW
Inspiring Innovation．Persistent Perfection
Outline
(*) Debug Tool Required
• Repair and Test Environment
• RF Block Diagram
• RF Calibration Repair Guide
– GSM Quad-bands Block Diagram
– GSM EGSM and GSM850
– GSM DCS and PCS
– WCDMA Quad-bands Block Diagram
– WCDMA Band1/Band2/Band5/Band8 & TD-SCDMA Band 34/39
– LTE Quad-bands Block Diagram
– LTE Band 1/3/3/7/8/19/20/28 & TD-LTE Band 38/39/40/41
– LTE Div. Rx Block Diagram
– LTE Div. Rx Band 1/3/7/8/19/20/28 & TD-LTE Div. Rx Band 38/39/40/41
(*)
• RF Test Trouble Shooting
(*)
– 2G RF Test
– 3G RF Test
– 4G RF Test
• GPS Repair Guide
• BT/WiFi Repair Guide
Inspiring Innovation．Persistent Perfection
GSM Block Diagram
Main Ant.
Rx SAW
SKY13492
(ASM)
RFU8
SKY77629-21
RFU15A
QFE1101
(RF PMIC)
WTR1625L
(Transceiver)
RFU3E
MSM8926
PM8926
(PMIC)
Inspiring Innovation．Persistent Perfection
2G TX and EGSM/GSM850 RX
Tx path
Rx path
1. RFU3E : Transceiver
WTR1625L
2. RFU15A : Power Amp.
SKY77629-21
3. RFU71 : B5 Duplexer
4. RFU67 : B8 Duplexer
5. RFU59 : Band Switch
6. RFU8 : Main Ant. Switch
SKY13492
Bot
4
5
3
Top
1
LB
HB
2
Serial IC
Tx comp.
Rx comp.
HB
LB
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6
DCS and PCS Rx (TW EU JP SKU)
Tx path
Rx path
1. RFU3C : Transceiver
WTR1625L
2. RFU63 : Band switch
LTE B3/GSM HB
3. RFU25 : DCS/PCS Rx SAW
4. RFU8 : Main Ant. Switch
SKY13492
Serial IC
1
2
3
PCS
Tx comp.
Rx comp.
4
DCS
Inspiring Innovation．Persistent Perfection
CN SKU PCS Rx
Tx path
Rx path
1. RFU3C : Transceiver
WTR1625L
2. RFU63 : Band switch
LTE B3/GSM HB
3. RFU25 : DCS/PCS Rx SAW
4. RFU8 : Main Ant. Switch
SKY13492
Serial IC
1
2
3
PCS
Tx comp.
Rx comp.
4
DCS
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WCDMA Main Ant Block Diagram
B8 Duplexer
RFU71
Main Ant.
SKY13492
(ASM)
RFU8
B1 Duplexer
RFU19
B5 Duplexer
RFU67
B2 Duplexer
RFU66
SKY77629-21
(ASM)
RFU15A
QFE1101
(RF PMIC)
WTR1625L
(Transceiver)
RFU3E
MSM8228
(PMIC)
PM8228
Inspiring Innovation．Persistent Perfection
TD-SCDMA Main Ant Block Diagram
Main Ant.
SKY13492
(ASM)
RFU8
B34/39 TX SAW
RFU24
B34/39 RX SAW
RFU21
SKY77753-51
(ASM)
RFU27A
QFE1101
(RF PMIC)
WTR1625L
(Transceiver)
RFU3E
MSM8228
(PMIC)
PM8228
Inspiring Innovation．Persistent Perfection
WCDMA Band1
Tx path
Rx path
1. RFU3E : Transceiver
WTR1625L
2. RFU15A : Power Amp.
SKY77573-21
3. RFU19 : B1 Duplexer
4. RFU8 ：Ant. Switch
SKY13492
Serial IC
Tx comp.
1
2
3
Rx comp.
Tx/Rx comp.
4
Inspiring Innovation．Persistent Perfection
WCDMA Band2
Tx path
Rx path
1. RFU3E : Transceiver
WTR1625L
2. RFU15A : Power Amp.
SKY77573-21
3. RFU13 : B2 Duplexer
4. RFU8 ：Ant. Switch
SKY13492
Serial IC
Tx comp.
1
2
Rx comp.
Tx/Rx comp.
3
4
Inspiring Innovation．Persistent Perfection
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