Appendix 3. Testing The Motor Winding Coils - ACE Lab PC-3000 Express Manual

Seagate
F3 architecture
100110101010110011010101011001101010101100110101010110011010101011001101010101100110101010110011010101011011010101011
10101010110011010101011011010101001101010100110101101101101010100101
1011010101100110011010101011010101111010111
A
11. ppendix 3. Testing the motor winding coils
11010101101101010100111110
1101110110110011
0111011110
111101
011
Motors in Seagate drives use the triangular layout (Fig. 11.1.), so you have to check three pairs of connection points for
11
drive coils. Resistance between pairs of the coils connection points in a functional drive is ~ 3.4 Ohm. You can
1
determine the value more precisely for each individual case by measuring the coils resistance on a functional drive
belonging to the same family.
56
01010101100110101010110011010101011001101010101100110101010110011010101011001101010101100110
Fig. 11.1.
PC-3000 EXPRESS / UDMA / PORTABLE 
Technical support: ts@acelab.ru
Phone: +7 863 201 50 06
ts.acelaboratory.com
 ACE Lab