Repair instruction
hAP Lite
Published August 26, 2015
These repair instructions are for NON WARRANTY repairs only!
Please make visual inspection for signs of corrosion
or mechanical damages before starting.
Contents
List of hAP series.................................................................................................................3
Disassembling information.................................................................................................5
Routerboard does not power on........................................................................................6
Routerboard does not boot.................................................................................................8
Ethernet port does not work.............................................................................................10
WiFi does not work............................................................................................................11
2 Latest Checking procedure for over-voltage damage available at www.mikrotik.com
List of RouterBoard hAP series
hAP Lite
hAP
List of RouterBoard hAP series 3
hAP ac Lite
hAP ac
4 List of RouterBoard hAP series
Disassembling information
1. Use two “-” screwdrivers. Push screwdrivers in case cavities.
2. Remove case cover and take out board.
Disassembling information 5
Routerboard does not power on
There no signs of any LED, LCD or buzzer activity
Find potential problem area
RouterBOARD does not turn on when one of the power is disconnected. Check Which voltage is
switched off, Power IN (5V), 3.3V.
Power IN
3.3V
GND
6 Routerboard does not power on
If Power_IN Failed
1. No power on 3.3V output
Check 5V output on C100
Try to use different
PSU adapter
5V 0V
Problem solved Measure L100 resistance
<1 >1
Ohm Ohm
Change U100 Change L100
2. Supply voltage components location on RouterBOARD
U100
C100
L100
Routerboard does not power on 7
3. Supply voltage Components table
Reference Manufacturer code Description Manufacturer
C100 CL21A475KAQNNNE(G) Capacitor 4.7uF 10% 25V X5R 0805 Samsung Semiconductor Europe GmbH
L100 BC43-4R7M Inductor 4.7uH 20% 1.7A 4.8x4.3x3.5 RoHS T&R Bao Cheng Electronics Co.,Ltd.,
U100 LSP5015AAAD 1.5MHz, 1.5A, High Efficiency PWM Step-Down DC/DC Converter SOT-23-5 Lite-On Semiconductor corporation
Routerboard does not boot
If Netinstall can see the board, but can not install it
1. Troubleshooting flow chart
Measure inductor L300, FB300,
FB301, FB302 resistance
<1 >1 Ohm
Ohm
Check 2.0V output on Change defective
transistor Q301 pin3 inductor
2.0V 0V
Check 2.5V output on Change Q301
transistor Q300 pin3
2.5V 0V
Change 25MHz Change Q300
Crystal Y200
Problem still
appears
Change RAM U500
Problem still
appears
Change CPU U100
If you still can't can't install Board, please send it to RMA.
8 Routerboard does not boot
2. Components location on RouterBOARD
FB300
Q301
Q300
FB301 L300
FB302
Y200
FB200 U1
U500
3. Components table
Reference Manufacturer code Description Manufacturer
FB300-FB302 CB03YTYH331 Ferrite Bead 330 Ohm 1.5A 0603 Viking Tech Corporation
FB301 BK1005HS121-T Ferrite Bead 120 Ohm 500mA 0402 Taiyo Yuden Co. Ltd.
L300 BCRH2D18B/HP-2R2N-NL Inductor 2.2uH 30% 1.48A 3.2x3.2x2 RoHS Bao Cheng Electronics Co.,Ltd.,
Q300, Q301 MMBT2907A Transistor PNP -60V -600mA 250mW Hfe=100-300 SOT-23 Lite-On Semiconductor corporation
Y200 FL2500121 Crystal 25MHz 20ppm 10pF -20+70 3.2x2.5 PSE Technology Corporation
U1 QCA9531-BL3A-R 2x2 2.4GHz SoC with MIPS24K 550 MHz CPU USB2.0 12x12mm DRQFN-156 T&R Qualcomm Atheros Technology Ltd.
U500 W9425G6KH-5 DDR SDRAM 256Mbit DDR400 16Mx16bit TSOP-66 0+70C Tray Winbond Electronics Corp.
Routerboard does not boot 9
Ethernet port does not work
No link on Ethernet port
1. If there is no link on any of Ethernet ports, change:
- TR1
- TR2
- U1
If there is still no link on ethernet port, please send board to RMA.
2. Ethernet port components location on RouterBOARD
TR1 TR2
U1
3. Ethernet port components table
Reference Manufacturer code Description Manufacturer
TR1, TR2 NS772001 10/100 Dual Ethernet transformer TH 20pin Tube Feei Cherng Enterprise CO., LTD.
U1 QCA9531-BL3A-R 2x2 2.4GHz SoC with MIPS24K 550 MHz CPU USB2.0 12x12mm DRQFN-156 T&R Qualcomm Atheros Technology Ltd.
10
WiFi does not work
1. If wireless doesn't work, change:
- U400
- U401
- U1
If wireless still does not work, please send board to RMA.
2. RF components table
Reference Manufacturer code Description Manufacturer
U400, U401 RTC6603 RF SPDT Switch 0.1-3GHz SC-70 Tape&Reel Richwave
U1 QCA9531-BL3A-R 2x2 2.4GHz SoC with MIPS24K 550 MHz CPU USB2.0 12x12mm DRQFN-156 T&R Qualcomm Atheros Technology Ltd.
3. RF components location on RouterBoard
U702
U1
U400 U400
WiFi does not work 11
