Mitsubishi Electric M4853 Maintenance Manual page 81

5.3.3 INDEX sensor position adjustments
1) Equipment
CE Tester
CE diskette (DYMEK 502-ID STANDARD DISKETTE)
Hex wrench
Oscilloscope
2) Check procedure
2) -1
2)-2
2)-3
2)-4
2)-5
Connect CE tester to drive (.set power off)
Turn-on power switch and motor-on
Select drive and load CE diskette
(Close clamp door slowly)
Read timing of each- waveform at TPA9 .
TPA10 under read mode TK02,
oscilloscope.
Trigger: EXT
Signal : CHl
CH2
Specification of timing T.
Check
Adjust
(see figure)
+INDEX (DC, +)
TPA9 (AC, Normal)
TPA10 (AC, Inverted)
Side-0
20 0 ± 2 00 us
200±100 us
All at TK 02
using
(TPB14)
Mode .
Side-1
200 ± 300 us
200 r 200 us