Sharp SD-AT1000W Dokumentacja Pobierz pdf (Strona 245)

Maxiva UAX

October 17, 2013

5‐65

888‐2693‐004 WARNING:Disconnectprimarypower priortoservicing.

Figure 5-48 FET Gate ID

Ame

asuredresistancebetween13and15KohmsindicatesFETisOK.Ifsignificantlylowerthan13Kohms(say10K

ohmsorless)theFEThasprobablyfailed.Inthiscaseapalletchangeisindicated.SeeSec t ion5.1

0.8onpage5‐65

fordeta

ils.

5.10.8 PAPalletReplacement

ShouldaFETorotherPAmodulecomponentonthepalletassemblyfail,thePApalletcanberemovedfromthe

moduleandreplacedonsite.

Note

The photos that follow may help identify components. Numbers on the photos refer to the replacement

steps outlined below.

STEP 1 RemovethePAmodulefromtherack.

Warning

MODULE MAY BE HOT. ALLOW THE MODULE TO COOL BEFORE ATTEMPTING TO

REPLACE THE PA PALLET.

STEP 2 UseaPhi llipsscrewdrivertoremove10flatheadPAmodulecoverscrews.If

possiblereplacethesescrewswithnewscrewsuponreassembly.Warning

labelshouldbeupandtowardthehandleforreassembly.

FET 1 Gate 2

FET 1 Gate 1

FET 2 Gate 2

FET 2 Gate 1

1 2 ... 240 241 242 243 244 245 246 247 248 249 250 ... 291 292

Brak uwag

Sharp SD-AT1000W Dokumentacja Strona 245