Specifications

WITE32 Release Notes Version 3.20
3.3.1 Head Recovery Procedure for Comb Loader and Head Stack Tooling
In the case of emergency on the V2002 spinstand with a head comb loader or a head stack tooling, the tested
head or a head stack remains on a disk and needs to be unloaded manually. The head or head stack must be
unloaded if one of the following occurs:
• Air pressure is low in the air supply line
• Air pressure is low in the spindle line
• A failure is detected in vacuum supply line
• The crash protector is hit
• The HSA acoustic sensor alert occurs
If one of the emergencies listed above occurs, the system automatically launches the Head Recovery procedure.
This procedure is designed to assist with the manual head or the head stack unloading.
You can also start the Head Recovery procedure using the Spinstand Tests menu item on the menu bar of the
WDCP2002 dialog box.
Note:
To unload the head safely, follow the instructions displayed in the WDCP2002 dialog box (see Figure 3 and
Figure 4). The title of the recommended step is marked by a blue color. The Head Recovery procedure selects
the first step after checking the spinstand conditions. You have to complete all actions required at the selected
step. After that the procedure verifies if the conditions are acceptable and selects the next recovery step.
EXAMPLE
Assume an air pressure failure is detected, and the current recovery step is Step 3.
1. The procedure is on Step 3 – the title of this step becomes blue. Step 3 recommends you to fix the air
pressure and confirm that it is normal by selecting the Confirm Air Pressure checkbox.
2. After you fixed the air pressure and selected the Confirm Air Pressure checkbox, the procedure verifies if the
pressure level is acceptable.
3. If the air pressure is normal, the title of the next recovery step becomes blue, which means you have to go to
Step 4 now. If the pressure level is not acceptable, the procedure clears the Confirm Air Pressure check box.
It means that Step 3 is not completed and you must repeat the operations requested at this step once again.
The Head Recovery procedures for a head comb loader and a head stack tooling have some different steps. The
Section 3.3.1.1 describes the procedure for a head comb loader. The Section 3.3.1.2 describes the procedure in
case of a head stack tooling.
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