RESISTANCE CHECKS
HIGH PROFILE - SHUGART DRIVE

Stepper Motor		End to end on either coil = 74 ohms End to centertap = 37 ohms
Spindle Motor		Motor coil (red wire to blue wire) = 71 ohms Tach coil (green wire to yellow wire) = 175 ohms at rest Tach coil while rotating spindle = 135 - 195 ohms Measurements made at connector on motor control pcb.
R/W Head		R/W coil (black wire to red wire) = 28.5 ohms R/W coil (red wire to white wire) = 15 ohms R/W Head R/W coil (black wire to white wire) = 15 ohms Wire Erase coil (green wire to white wire) = 11.9 ohms Measurements made at the 5 pin plug at the end of the R/W head cable. The plug should be disconnected.