5.3.4 Head alignment adjustment
1)
Equipment
Disk Tester
CE Diskette (DYMEK 502-ID STANDARD DISKETTE)
No. 1 screw driver
Oscilloscope
Hex wrench (1.5 mm dia.)
(Fine point diagonal cutter)
2)
Adjustment procedure
2)-1 Connect Disk Test to drive (set power off)
2)-2 Turn-on power switch and motor on.
2)-3 Select drive and load CE diskette (close clamp door
slowly).
2)-4
Seek TKOO to TK32 then read amplitude of each wave-
form (positioning waveform)
read mode (see Figure 7) .
at TPB9, TPB10 under
Tigger:
EXT —
INDEX
(DC, +)
(TPD14)
Signal:
CHI -
CH2 -
TPB9
TPB10
(AC
)
(AC, INV)
Add
Specification:
when A>B
A<B
B/A >
A/B >
CHECK
0.57
0.57
ADJUST
0.6
0.6
21 -6
In case seek direction is TKOO TK32 or TK79 TK32,
loosen both set screws, then adjust STM until
signal comes within spec.
Tighten screw.
3)
Note:
Adjust under following conditions
Temperature:
23°C ±2°C exposed over 2 hours
Humidity:
50% ±5%
Содержание M4853
Страница 1: ...5 25 INCH FLEXIBLE DISK DRIVE MODEL M4853 MAINTENANCE MANUAL STANDARD MITSUBISH ELECTRIC ...
Страница 5: ...FIGURE 2 ...
Страница 9: ...INDEX TPD14 FIGURE 4 ...
Страница 11: ...FIGURE 5 ...
Страница 14: ...FIGURE 7 ...
Страница 17: ...TJ2 G302 31A 5 25 INCH FLEXIBLE DISK DRIVE M4853 PCB NAMFF PARTS LIST 10 31 83 MITSUBISHI ELECTRIC ...
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Страница 27: ...FIGURE 7 1 H and R Jumper Options ...
Страница 30: ...Nota See Section 7 17 for description of this unmarked option ...
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Страница 48: ...TJ2 630232A H 5 25 INCH FLEXIBLE DISK DRIVE M4853 ILLUSTRATED PARTS LIST ...
Страница 50: ...M4853 F l e x i b l eD i s k D r i v e ...
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Страница 63: ...5 25 INCH FLEXIBLE DISK DRIVE Differences Between M4853 and M4853 1 ...
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Страница 70: ...TJ2 G30219A 5 25 INCH FLEXIBLE DISK DRIVE MODEL M4853 1 MAINTENANCE MANUAL MITSUBISHI ELECTRIC CORPORATION ...
Страница 74: ...REGULAR MAINTENANCE 5 ...
Страница 75: ...5 2 He a d C l e a n i n g on field a p p l i c a t i o n s ...
Страница 78: ... INDEX Figure 4 ...
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Страница 92: ...TJ2 G30 I99C S 2S INCH FLEXIBLE DISK DRIVE M 4853 I ILLUSTRATED PARTS LIST MITSUBISHI ELECTRIC ...
Страница 94: ...D M4853 1 Flexible Disk Drive 2 ...
Страница 97: ...Figure 3 1 Mechanism Assy 1 5 ...
Страница 99: ...Figure 3 2 Mechanism Assy 2 7 ...
Страница 101: ...Figure 4 Carriage Assy 9 ...
Страница 106: ...Figure 8 Flexible Disk Drive Wiring Diagram 14 ...
Страница 108: ...Tandy Model 2000 Service Manual 298 ...