Shugart SA 400 minifloppy Service Manual

15, 5.0 TRACK ZEBO IINDICATION Track 00 signal (pin 26) is provided to the using system to indicate when the read/write head is positioned on track zero. Figures 12 & 13 show the logic and timing for the track zero indi.cation. The track zero micro switch is actuated by the car- r…

29, Table ()f Conte1nts 2.1 2.2 2.3 2.4 Maintenance Features . . 2.1.1 AIignment 0 iskette 2.1.2 Exerciser. . . 2.1.3 Special Tools . Diagnostic Techniques. 2.2.1 Introduction 2.2.2 "Soh Error" Detection and Correction 2.2.3 . VI/rite Error 2.2.4 Head Error . . . 2.2.5 Seek Error . …

11, PHYSICAL INDEX ....... ~ DATA FIELD _>RECORD 18 GAP4 PRE-INDEX 103 BYTES HEX "FF" GAP 1 INDEX GAP 20 BYTES ID RECORD " 1 GAP 2 10 GAP 10 BYTES DATA FIELD RECORD " 1 GAP3 DATA GAP 18 BYTES ID RECORD #2 GAP2 DATA FIELD RECORD #2 GAP3 ID RECORD #3 GAP 2 DATA FIELD RECORD #3 10 RE…

26, 12.0 INTERFACE The electrical interface between the SA 400 drive and the host system is via two connectors. The first connector, J I, provides the signal interface; the second connector, J2, provides the DC power. Frame ground is connected via a faston connec- tor located near the mot…

40, FHONT VIEW j. Check the adjustment by stepping off track and returning. Check in both directions and readjust as required. k. Whenever the Head Radial Alignmen t has been adjusted, the carriage limiter and track zero switch adjustment must be checked (Section 2.4.15 & 2.4.16). NOTE: (A…

55, Shugart SA 400 minifloppy +MOTOR OUT +TACH IN -TACH OUT -MOTOR ON +12V (RED) (YEL) (GRN) (BLU) DRIVE MOTOR ¢A (BLK) ¢B (YEL) ¢C (BRN) ¢D (ORG) P·3 +12'1 (RED) PIN 11 +12\1 (RED) P·3 PIN 12 -HEAD LOAD (GRY) P·:3 +12V (TO SOLENOID) (WHT) PIN L ==0 HEAD LOAD SOLENOID STEPPER MOTOR • (YEL) COMM. (GRN) V .J::" …