About hashboard repair

Components of this pamphlet: The primary tale S9 Troubleshooting of numerous mistakes in the Procedure board, just how to make use of the examination box for exact placing. Thermostatic soldering Irons(350-400C ), pointer for solder chip resistor capacitors and also various other tiny spots. Devices for fixing the S11 miner are indispensable.

After upkeep, the hash board need to be checked two times and validated as Alright before it can pass! Pay attention to the procedure approach when replacing the chip.

4. Identify the maintenance terminal item as well as the corresponding examination software application specifications and examination fixture. 5. Check whether the devices and components can function normally. 1. 1 S9 is made up of 21 voltage domains connected in collection. There are 3 BM1387 chips in each voltage domain, and also there are 63 BM1387 chips in the entire board.

5 There are independent small warm sinks on the front and also back of each chip. The little warmth sink on the front side is the SMT patch.

Keep in mind: In the upkeep process, in order to minimize the damage of the high temperature level of the air weapon to the PCB and the chip when changing the parts of the electric board or the chip, it is needed to top place the tiny heat sink near the defective part and the PCB board.

The PCB board has test points anyhow, throughout the maintenance of the production, the front examination factors can be used when the warm sink is not attached to the front of the PCB; the completed item repair (after-sales maintenance), because of the front and also back of the PCB covered asic repair with heat sinks, it is needed to situate the mistake through the test points of the PCB.