Marantz CD6000 OSE K.I. Signature

Bought this one broken, for 120 Euro. What a bargain. The unit could not read anything, showing No Disc followed by an Error on its matrix white display. Fortunately, for people who are crazy enough to take the risk and buy such thing, there are available sources that could help. Looking back before the purchase, i am not sure whether i would do it again. After hours of research and messing up with the player, i discovered where my patience, as well as my anger can get. Ok, it was not that bad....hell no!!! 

Anyway, in order to better identify the Error problem, it is best to enter the service mode - turn the power ON, while pressing the Play + Open/Close button together. The player will show Error Code. In my case, it was Error 11. In the service manual you will also find a table that points to the specific problem: Error 11 - Sledge Error.  

Now, it is still too early to say...easy...

...because there was nothing wrong with the sledge/sled. However, it is important to note, that the CD did not even try to spin. Based on this fact, it might move you closer to the main problem. Service manual page 16 shows the block diagram. Now, according to the Error 11 it is clear, that the servo driver TDA7073A could be making you angry...or, it also could be the digital servo controller & C.D. decoder SAA7372.  

Time to dust off your multi-meter and check the batteries. All ok? Perfect, turn to page 21 of the service manual. 

Now you see in the left upper corner the servo driver at position 7401 on the PCB. This driver is responsible for controlling both of the motors - the CD spindle motor and the sledge motor. First, check the voltage on leg 5, it should read +5V, then check legs: 1,2,6 & 7 all of them should have approx. 2,5V. If so, you can assume that the SAA7372 is OK for particularly this purpose. Now, on the same servo driver, check legs: 9,12,13 & 16. If your meter reads 2,5V on all of them, this is how it supposed to be and the motor should spin the CD. If it does not, it should show the Error 13 - Spindle Error.   

In my case however, the meter showed me alarming, red light flashing and siren honking 0,7V for leg 13 & 16. The remedy i found on the internet - lower the resistance of 12k ohm resistors, positions 3412 & 3413. The easiest way to do this, is to solder a new resistor parallel to the 12k one. The web source recommends 47k ohm, so that the final resistance lowered under 10k. 

After the assembly, i measured the voltage again. Now, both legs showed 2.4V, good enough. I threw in a CD and pressed open/close button. The drawer slid, the CD spinned and the display showed number of tracks and total time...and we happily lived thereafter.