FTP://FTP.FUNET.FI/PUB/CBM/SCHEMATICS/DRIVES/NEW/1541/

tHERE ARE SEVERAL VERSIONS OF THE cOMMODORE 1541 DISK DRIVE. sOME ARE COVERED BY THE TECHNICAL MANUAL, OTHER SCHEMATICS WERE SCANNED FROM LATER DOCUMENTS. tHERE IS EVEN A REVERSE ENGINEERED DIAGRAM OF THE 1541-ii DRIVE.

sUBDIRECTORIES

SERVICE/
cOMMODORE 1540/1541 sERVICE mANUAL IN html FORMAT.
TECH/
1540/1541 TECHNICAL MANUAL. sCHEMATICS AND OTHER INFORMATION FOR DRIVES UP TO 1541 b.

fILES

1541-ii-POWERSUPPLY.GIF@ 2002-09-22 66389
rEVERSE-ENGINEERED SCHEMATIC DIAGRAM OF THE 110-VOLT 1581 AND 1541-ii POWER SUPPLY. cREATED AND UPLOADED BY wILLIAM lEVAK <WLEVAK@CYBERSPACE.ORG>. aCCORDING TO HIM, YOU HAVE TO BREAK THE CASE OPEN TO GET INSIDE. jAMECO SELLS A CASE THAT CAN BE USED TO REPLACE IT.
1541-ii.340503.GIF 1996-10-31 190045
1541-ii SCHEMATIC DIAGRAM, BY cOMMODORE. aCCORDING TO THE 1571 sERVICE mANUAL, THE gATE aRRAY (251828 OR 64h156) HAS SOME DIFFERENT REVISIONS (-01, -02 AND -03). rEVISIONS -01 AND -03 HAVE ONLY 40 PINS, BUT -02 HAS 42 PINS. fRANK kONTROS (JENO@KONTR.UZHGOROD.UA) REPORTS THAT THE (CHINESE) 1541-ii BOARDS HE HAS SEEN ONLY CARRY THE ASSY NO. 340503, ALTHOUGH THERE ARE SOME DIFFERENCES. aLSO, HIS BOARDS HAVE THE LATEST (-03) gATE aRRAY, WITH SOME WIRING ON THE PIN 21 (osc).
1541-ii.GIF 1997-01-17 112882
1541-ii.README 1997-01-17 1286
1541-ii SCHEMATIC DIAGRAM. dRAWN AND UPLOADED BY lEVENTE h{$e1}RSFALVI (lEVENTE@mI.sTUD.pmmfk.jpte.hu).
BOARDS.TXT 1999-12-02 1334
iNFORMATION ABOUT DIFFERENT 1541 BOARD VERSIONS, COMPOSED BY wILLIAM lEVAK.
PARTS.TXT 2002-12-05 2000
1540/1541/1541a/1541b/sx-64 DRIVE PARTS LIST, COMPOSED BY wILLIAM lEVAK.
PLA.TXT 1999-12-02 2883
1541/1571 40/42 pIN gATE aRRAYS, COMPOSED BY wILLIAM lEVAK.
SHORT-251748-REV.e-LEFT.GIF 1996-05-08 202102
SHORT-251748-REV.e-RIGHT.GIF 1996-05-08 191735
sHORT BOARD 1541, ASSY NO. 251748, REV.e, SHEET 3 OF 4. oN THIS BOARD, A 40-PIN CUSTOM CHIP REPLACES SOME 74XX LOGIC.

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