25.02.2016 // 0:13:19

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First, Turn off UPS, disconnect any input and output.

Second, Loosen the screws and take off the UPS cover.

Third, Disconnect the battery from PCB, then press the switch button On/Off to let out the remanent electric energy existing on PCB

Fourth, Check the PCB part number which marked on the edge of PCB, confirm it 098-18377-XX or 098-18224-XX (XX means 01 02 ……). Because the modification method below is only suitable for the certain PCB which part number is 098-18377-XX or 098-18224-XX.

Fifth, Check the PCB and find 3 positions ---- R1A, R2A, D1A, just as below:

Sixth, Add the 3 components on the 3 positions:
R2A add RES CHIP TF 1/10W 30K F (0603) (AI)
R1A add RES CHIP TF 1/10W 10K F (0603) (AI)
D1A add DIODE 1N4148W (SMD) 0.15A /75V (AI)

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