Tandon TM-100-1 Operating And Service Manual page 4

Section
Number Title of Section
TABLE OF CONTENTS
Page
Number
SECTION II - MAINTENANCE CHECKS AND ADJUSTMENTS
2.2.3 Track 00 Stop Adjustment .. ......... .. . ... . ...... ...... . .................. 2-6
2.3 Index Checks and Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
2.3.1 Index Checks .... .... . .. . .. ..... .. . .......... . ... . ......... ...... ...... 2-8
2.3.2 Index Adjustment ............................... .... ............. . ...... 2-9
2.4 Compliance Check and Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
2.4.1 Compliance Check .................................................. . ... 2-9
2.4.2 Compliance Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
2.5 Write Protect Switch Adjustment Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
SECTION Ill - PRINTED CIRCUIT BOARD OPERATION
3.
3.1
3.2
3.3
3.3.1
3.3.1.1
3.3.1 .2
3.3.1.3
3.3.1.4
3.3.1.5
3.3.1.6
3.3.2
3.3.2.1
3.3.2.2
3.3.2.3
3.3.2.4
3.4
3.4.1
Introduction ................. ..... .. . . . ............... . .. . ...... ... .. ... 3-1
Explanation of Symbols and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Physical Description of The Logic PCBA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Interface Electronics Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Input Control Lines . ...... . . .. .... ............. . .................. .. . .. .. 3-4
Select Lines (NDS0-NDS3) .............. . ............. ... ................. 3-5
Drive Motor Enable (N MOTOR ON) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Direction and Step Lines (DIR) (N STEP) ........ . . .......................... 3-7
Write Enable (N WRITE ENABLE) .......................................... 3-9
Write Data (N WRITE DATA) ..... ... .. ...... ............... . .............. 3-9
Side Select N SIDE SELECT) ............................................. 3-10
Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
Index (N INDEX/SECTOR) ................................. ...... ........ 3-13
Track 00 (N TRK 00) ............ ....................... .. .. . . .. . ... ..... 3-14
Write Protect (N WRITE PROTECT) ... .................. . ............... ... 3-14
Read Data (N READ DATA) ..................................... . .. ....... 3-15
Physical Description of The Servo PCBA . . ..... . ... .... .. .. .................. 3-18
Input Control Lines .. .................. ... .. ............................. 3-18
SECTION IV - TROUBLESHOOTING GUIDE
4.
4.1
4.2
4.3
4.4
4.5
4.6
~ntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Not Ready and/or No Index ................. . ...... ........... ............. 4-2
Will Not Seek or Restore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Will Not Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Will Not Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Front Panel LED Inoperative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
No Track 00 Indication ............ .. ........................... . .. ........ 4-3
SECTION V - REPLACEMENT PROCEDURES
5.
5.1
Introduction ................................................. ... . . . . .... 5-1
Drive Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
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