PIONEER KEH-P4630 HEAD UNIT & PIONEER CDX-P1230S MULTI-CD PLAYER PROBLEM? CAN’T SELECT CD Player from the Head Unit SOURCE button. When IGN key ON, EACH CD in player is spun & [presumably read], but information NOT displayed on Head Unit e.g. ‘M1 DISC 01.’ Pressing the CD Player AND then the Head Unit RESET buttons may fix problem (CD Player OWNERS Manual) Can’t find Head Unit RESET Button. Do you have the SERVICE MANUAL for the Head Unit & or the CD Player? Thank You.