The best Side of s19 hash board
The best Side of s19 hash board
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b) If one chip can be found in action a), it implies that the main chip along with the former circuit are ordinary. Use an analogous technique to examine the next chips. One example is, if the 1V2 check level and RO examination stage in between the 38th and 39th chips are quick-circuited, Should the log can locate the 38th chip, then there is no trouble with the initial 38 chips. If 0 chips remain uncovered, initially Test whether the 1V2 is ordinary.
(three) Swap the a person with an increased reply as well as one particular by using a reduced reply. Following the swap, check the hash board again to check if the reply from the ASIC chip is standard. If it is irregular, measure whether the voltage During this domain is lessen than the conventional price.
② Visually inspect whether you will discover clear signs of burnt parts, parts impression offset or lacking elements, etc.
Two hash boards should be positioned simultaneously to variety an air duct when utilizing the chassis to dissipate heat. For single-sided tests in production, the air duct should even be shaped.
3V, and the domain voltage in the back fields are almost all increased than 0.38V. This case is attributable to the chip not being soldered nicely, commonly one.8V, 0.8V, RXT, CLK are certainly not soldered nicely. It is suggested to immediately evaluate the domain voltage to locate which area is the issue. The 1V8 and RO brief-circuit strategy Utilized in part a) could also Identify the abnormal place;
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Verify the instruments to make certain that the check fixture can do the job usually. Determine the parameters of the maintenance station take a look at software program, the Edition on the examination jig, and other associated parameters.
two. Soon after there won't be any challenges in regime tests (brief circuit detection in schedule tests is mostly needed to keep away from burning the chip or other components on account of limited circuit when electric power is on), the examination fixture can be used to detect the chip, and also the positioning can be determined dependant on the check fixture detection success.
2. Growing older test: Throughout the growing old test, repair really should be carried out according to the monitored interface check, which include:
This case is probably going to be because of the abnormal resistance welding on the entrance and rear CLK, CI, and BO from the Xth chip, so people shall give attention to these six resistors. The tiny likelihood is because of X-one, X, X+one, that's, Amongst the 3 chips, the subsequent pins irregular welding conditions in the chip manifest:
● The repaired hashboard can be judged as a great solution with in excess of two passes when tests with the hashboard tester. For The 1st time, following changing the parts, look forward to the hashboard to chill down, utilize the hashboard tester to check, and following the check is handed, set it aside then great it down. For the second time, following a few minutes if the hashboard cools down, examination once again.
3. The test SD card are going to be built As outlined by the requirements, as well as double-sided warmth sink eight-occasions Patter exam ought to make an SD card, as shown from the determine beneath;
② The second situation: Micro-shorter circuit amongst signals (0-many hundreds of ohms), due to the compact resistor value of the chip pins, 1st use a heat gun to solder and see if it is OK;
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