DOS ROM is a common failure. Check also UA1, UC2, UC4, UC6, UC7, UD3, and UD5. When drive powered up or reset, red LED comes on and goes out, but spindle motor does not turn. When drive powered up, red LED stays on and spindle motor runs continuously. Check also UA1, UB4, UC4, UC6, UC7, UD3, and UD5.
Drive powers up and resets normally.
When drive powered up, red LED stays on and spindle motor runs continuously. Check also UA1, UB4, UC2, UC6, UC7, UD3, and UD5. When drive powered up, red LED stays on and spindle motor runs continuously. Check also UA1, UB4, UC2, UC4, UC7, UD3, and UD5. When drive powered up, red LED stays on and spindle motor runs continuously.