Guys i got a wierd one and need al the help i can get. Got the above mentioned philips 3 cd carousel in a philips mini component.
The sled motor doesnt come home. I've checked the TDA7073A motor drive and can manually get the sled to move by driving the inputs with my multimeter test probe. When i observe the signal on the motor drive ic's inputs on my scope i dont see any drive signal.
The carousel shuttles through all 3 cds serially and then reports "no disc"
Shouldnt it report an error since the sled doesnt come home...?...strange as philips always is ( had a tv with no picture once and it turned out it waqs due to the speaker being shorted and causing a voltage drop in the video section)
I dont have a schematic for the unit and am lost.. customers breathing down my back. The unit uses a SAA7378GP as RF and servo.
Please advise.....
The sled motor doesnt come home. I've checked the TDA7073A motor drive and can manually get the sled to move by driving the inputs with my multimeter test probe. When i observe the signal on the motor drive ic's inputs on my scope i dont see any drive signal.
The carousel shuttles through all 3 cds serially and then reports "no disc"
Shouldnt it report an error since the sled doesnt come home...?...strange as philips always is ( had a tv with no picture once and it turned out it waqs due to the speaker being shorted and causing a voltage drop in the video section)
I dont have a schematic for the unit and am lost.. customers breathing down my back. The unit uses a SAA7378GP as RF and servo.
Please advise.....