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3-6-35
LISTA Linearity Adjustment and Waving Measurement (25M Mode)
Specification
Linearity is less than 3um, Waving is less than 1.5um.
Mode
SERVO Adjustment Menu:"A10 RP LINEAR DP"
Test Point
(1) ATF:TP732 (2) HSW:TP722(RP HSW) (not TP723(PB HSW) (3) GND:TG510
Adjustment
S1 and T1 Post Height
Tape
VFM3581KM or VFM3581KL
1. Open the Service Menu and select " A10 RP LINEAR DP" in the " SERVO ADJUST"
2. Playback a LISTA alignment Tape (VFM3581KM).
3. Select " (2) Linearity Measurement" then Linearity waveform is appeared.
4. When the following waveform is appeared press " BS" (Back Space) key to centering the waveform. Adjust S1
and T1 Post Height so that the Linearity waveform is flat. Confirm the ENV waveform is flat.
Red dot lines shows the specification, so linearity waveform should be in the lines.
Points
(1) The left of linearity (Entrance) is changed by S1 Post Height and right of linearity (Exit) is changed by T1
Post Height.
(2) Lower of the monitor is changed by the lead of the cylinder.
(3) When the Post Driver is released from the Post linearity may be changed.
(4) After Adjustment is completed, EJECT the tape end load it again and confirm the waveform is not
changed.
5. After the Linearity Adjustment measure the waving.
Adjustment Value
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