HOME - Back to board
 

Sony WM-7 need help!

sergeant - 2013-07-09 08:11

Hi, everybody!

Last week I was lucky to purchase a brand new WM-7 with box, earphones, papers, etc... The walkman did not work, I thought the beld needed to be changed. I changed the belt (thanks instructions found on this forum), but the player is still partially dead. When I push Fwd, or Rev there is some short noise but capstan motor does not spin. To check the capstan motor I tried to short C and E  of Q603 and the motor got alive and I could to change the direction by Fwd and Rev buttons. So the motor itself is OK.

I downloaded SM (http://REPLACEMENT ERROR/topic...nual-super-much-pics), thanks to Walkgirl, but the schematic diagrams are not very readable. I checked the voltage on IC601 legs 7,8 and found there was no any. The DC-DC converter works and gives about 12 V. I can not to check all the rest according to the scematic because my eyes can not see the elements and voltage on the scanned pictures. My first question is if anybody have more clear and readable SM, at least schematic diagram. And the second one is if anybody comes across repairing of WM-7 and can tell me what else to check.  As I said the walkman was new and I believe there shold not be any serious problem... Your kind assistance is greatly appreciated!

alexwalkman - 2013-07-09 20:02

First,are you correctelly to fix the belt ?also chek the locked hook to close the cassette door,for any contact directelly to others motors,because WM-7 use 3 motors,or are you desolring any wire contact !

sergeant - 2013-07-24 05:21

Tried everything, no luck. Does anybody have a good quality service manual, at least the schematic? If somebody has got the manual, whoud you kindly scan the schematic for me with high resolution!