4-2. PRECAUTIONS
4-2-1. Torque Applied to Screws and Locking Paint
The following torque should be applied to screws, unless otherwise
specified.
Size of screws
Torque
M2
2kg -
cm
M2.6
4.5kg•cm
M3
6kg•cm
M3 set screw
4.5kg.cm
M3 plastic screw
1.5kg.cm
.
(Table 404) Torque applied to screws
For tightening or loosening M3 set screws for adjustment and parts
replacement, the following procedure should be followed.
(1) For adjustment, remove out the set screw and also remove the locking
paint which had applied to the screw itself and around it.
(2) Apply fresh locking paint to the first three threads of the set screw
with some narrow object such as a pair of tweezers.
(3) Adjust or tighten the set screw with the specified torque.
For other screws than set screws,
apply a drop of locking paint to the
designated points after tightening them.
4014
Summary of Contents for FD-55 Series
Page 7: ...SECTION 3 THEORY OF OPERATION 300...
Page 8: ...3 1 CONSTRUCTION AND FUNCTION 3 1 1 General Block Diagram Fig 301 General block diagram 301...
Page 23: ...Fig 308 Control circuit block diagram 316...
Page 40: ...SECTION 4 MAINTENANCE 4000...
Page 56: ...J4 J12 Option J9 J5 Top view of the FDD Fig 401 Types of connectors 4016...
Page 95: ...Note Refer to item 4 2 1 as to handling of the set screw 4057...
Page 102: ...k Key in Cl SET TMAX L Confirm as in item j 4064...
Page 104: ...Notch B position TP6 voltage 0 5V Max LED indicator Fig 422 Check of file protect sensor 4066...
Page 125: ...k Eject the level disk and release the Invert and ADD modes of the oscilloscope 4087...
Page 136: ...Fig 431 Adjustment track alignment 4098...
Page 153: ...Fig 436 Adjustment of index sensor 4115...
Page 172: ...Fig 440 Replacement of head pad 4134...
Page 176: ...Plate Fig 441 CSS Ass y and shift lever position 4138...
Page 177: ...SECTION 5 DRAWINGS PARTS LIST 500...
Page 179: ...r Fig 501 External view No l 502...
Page 181: ...PCBA DD motor servo Fig 503 External view No 3...
Page 182: ...Fig 504 External view No 4 505...
Page 183: ...Partis nrnnber of the FDD Fig 505 Extemal view No 5 506...
Page 188: ...Fig 506 Mechanical section break down 511...
Page 199: ...PCBA DD MOTOR SERVO PARTS LOCATION Type S i 522A...
Page 200: ...PCBA DD TOR SERVO PARTS LOCATION Type TO 522B...
Page 201: ...PCBA DD MOTOR SERVO PARTS LOCATION Type G 522C...
Page 202: ...PCBA DD MOTOR SERVO PARTS LOCATION Type T 522D...
Page 204: ...523B PCBA DO MOTOR SERVO SCHEMATIC Type K...
Page 205: ...o 523C i 1 PACB DD HOTOR SERVO SCHEMATIC Type G...
Page 206: ...CV 5 3 3 H 2SV 523D PC DD M o t o r SERVO SCHEMATIC Type T...
Page 207: ...PCBA MFD CONTROL B PARTS LOCATION PCB ISSUE A G 524A...
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Page 209: ...PCBA FRONT OPT PARTS LOCATION 525 PO I...
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