denon DCP-150 spindle motor rollbacks

ldzhjx0104

I have a DCP-150 CD player. but the spindle motor rotates reverse. who can give me any suggestion about that?

kaosun

If you soldered the two motor's wires conversely, the motor will rotate CCW.
It might rotate CW shortly then suddenly rotate CCW, this is a severe EF issue which means your EF doesn't balance. You need checking your EF VR or replacing a laser for try.

ldzhjx0104

actually, I checked CXA1272 Pin 39 voltage is from 1.4-2.4V, at first, it will be 2.4V, it rotates clockwise, but after 1 second later, the voltage will be 1.4V, it rotates CCW, I also checked BA10358, CXA 1271 EF balance, it should be OK, because I have another DCP-150, I just refer to that one to adjust EF balance. but it still doesn't work.

kaosun

DCP150 has lots of aging and leaking SMT capacitors, did you replace them all and clean your PCB??

ldzhjx0104

absolutely, I replaced all the capacitors.