WHAT DOES HASHBOARD S9 MEAN?

 This example is usually attributable to abnormal series resistance welding of CLK, CI, and BO around the front and rear in the X chip, so just target checking these six resistors. You will find there's smaller probability that it is attributable to abnormal welding of the next pins of the three chips X-1, X, and X+one:Repair strategy: check the a