Characteristic malfunctions
The most characteristic malfunction of accumulators  Seagate U8/.V8/.U10  is the spoiling (complete or partial) of contents of flesh - PZU. In this case the behavior of accumulator is absolutely not predicted. Was observed the following behavior of accumulators, caused by the partial spoiling of microprogram to flesh:
? accumulator started  1  time of  7-8  starting;
? during testing of surface accumulator "poured" a series of bed - blocks, a little "it slowed", and testing occurred further as if nothing were the matter. With povto rnom testing of this place bedy did not appear, but we could "be located" elsewhere;
? during testing of surface accumulator in the random place suddenly of klatsal with head, produced rekalibrovku and again continued testing. Surface defects were not detected;
? accumulator "rustled and howled" during an attempt at the testing.

The spoiling of contents of flesh - PZU it is caused by the gradual "runoff" of the injected charges, with the aid of which into flesh remain the data. Therefore we recommend even with correct contents of flesh - PZU to count and to write down it back into the accumulator.

Another frequently encountered malfunction, caused by the poor blocks of pitani 4, is the combustion of preamplifier - switchboard or servodekodera. In this case the accumulator does not leave into the readiness on  ATA,  accelerates the disk pack and emits sound similar to the "horse neigh".
For determining the precise reason for a similar malfunction, it is necessary to change the pay of accumulator for the deliberately proper. P ri this of flesh - PZU one should transpose to the pay - donor, having preliminarily verified the stability of its reading on the programmer. If "horse neigh" was preserved –camber preamplifier - switchboard, arranged inside the hermetically sealed-block. In this case the hermetically sealed-block is not subject to repairing.
If "neigh" disappeared –malfunction either in servodekodere on the pay - patient or was defective the choke of the nourishment of the preamplifier of switchboard.

Another variety of the malfunction of preamplifier - switchboard is the complete "silence" of accumulator during the supplying of nourishment. Moreover, if we unscrew screw in the region joint of hermetically sealed-block and to lay insulation spacer in order to exclude contact in the joint, then accumulator p ri to supply lead untwists engine. In this case hermetically sealed-bank it follows to recognize as unfit because of the spoiling of preamplifier - switchboard.

Sometimes are encountered accumulators without the surface defects, but of the periodically tapping by heads during testing specific parts of the disk space. In this case it is necessary to verify the binding of the microcircuit of the driver of engine  (èya002"8-.khkhkh)  and to replace, on it is guaranteed worker, microcircuit dual OU  l324.