01010101100110101010110011010101011001101010101100110101010110011010101011001101010101100110
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10101010110011010101011011010101001101010100110101101101101010100101
1011010101100110011010101011010101111010111
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11
1
Seagate
PC-3000 EXPRESS / UDMA / PORTABLE
F3 architecture
ACE Lab
Technical support: [email protected]
Phone: +7 863 201 50 06
56
ts.acelaboratory.com
11.
A
ppendix 3.
Testing the motor winding coils
Motors in Seagate drives use the triangular layout (
), so you have to check three pairs of connection points for
drive coils. Resistance between pairs of the coils connection points in a functional drive is ~ 3.4 Ohm. You can
determine the value more precisely for each individual case by measuring the coils resistance on a functional drive
belonging to the same family.
Fig. 11.1.