have download a number of manuals todate , most are excellant, one or two sometimes a little difficult to read but a least avaialable, great site .
Brad.
Text excerpt from page 1 (click to view)
MDR-Q23LP
SERVICE MANUAL
Ver. 1.0 2005.01
US Model
� Since this model is impossible to repair, it is supplied as a set only. There is no supply of the repair part.