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Manual Changes
Service Release for Revision A.04.20
Service Release for Revision A.04.20
Changes at Revision A.04.20.04
1. For the VM8020 head amplifiers (E5029J Opt.215, 217 and E5029H Opt.H32), the
2. For the VM8020 head amplifiers (E5029J Opt.215, 217, 613 and E5029H Opt.H32),
3. For the SR1750 head amplifiers (E5029J Opt.203 and E5029H Opt.H15 and H26), the
Changes at Revision A.04.20.03
1. Supports the following head amplifiers.
2. Supports the following cassettes.
3. Supports the 1.8 inch clamp.
4. Setting Menus for Clamp Size and Spinstand Type in Spinstand Tool have been
Bug Fixes
1. Bit Error Test in VEE Measurement Program
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function allows you to turn off the sense current during the write sequence has been
deleted. This is because this function sometime does not work on the VM8020. The
symptom is that sense current does not flow.
The property of "hpe5022_HAP_SENS_CURR_POL_OFF" has been deleted.
Note: E5029J Opt 613 has not had this function since the time of its release.
the function allows you to change the D1/D2 bits on the register 15 has been added.
The property of "hpe5022_HAP_PROP_xxxxx_LC" has been added.
function allows you to change the mode of dummy head connection at the beginning of
write sequence.
This function allows you to prevent to destroy a write head due to a spike current.
However, this function sometimes causes the trouble of the write current shutdown.
The property of "hpe5022_HAP_PROP_xxxxx_ACCMD" has been added.
•
E5029H Opt.H32 E5022-66532
•
E5029J Opt.627 E5022-66627/E5022-66628 Mercury
•
E5029C Opt.C21 E5010-61168
•
E5029C Opt.009 E5010-61292
(Cassettes for down face have already been released.)
Auto Alignment and Spinstand tool are modified for 1.8 inch clamp.
modified.
The "SET" buttons in the Clamp Size and the Spinstand Type Setting Menus have been
changed to "SAVE". The function of this buttons has been changed to not only "set"
but also "set" and "save" of the setting. Before this revision, it was necessary to click
the "save" button in the DAC Bias Adj. menu after setting the value.
Symptom: At revision A.04.20.02, the "offset" value in the "Ber Track Offset Comp.
Setup" menu can not be changed.
VM8020
Appendix A
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