WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. – 2 –...
SECTION 2 ELECTRICAL ADJUSTMENT Bias Adjustment NOTE: 1. Perform the adjustment after the unit has warmed up sufficiently. 2. Perform the bias adjustment if the power transistor has been replaced. Procedure: 1. Rotate fully the bias adjusting semi-fixed resistors (RV500, RV600) to the MIN position (counterclockwise).
SECTION 3 DIAGRAMS 3-1. CIRCUIT BOARDS LOCATION WAVEFORM THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.) 3.8Vp-p For schematic diagrams. 4MHz Note: IC902 1 XOUT •...
3-10. IC BLOCK DIAGRAMS 3-11. IC PIN FUNCTION • IC902 Input Control & LED Drive (TMP47C103N-JP47) • Main section Pin No. Pin Name Function X OUT IC700 uPC1237HA System clock (4MHz) X IN RESET Reset input OVER LOAD DET Mode select input (Connected to ground) MUTE VOL + Motor drive output (+)
SECTION 4 EXPLODED VIEWS NOTE: The components identified by • Hardware (# mark) list and accessories and packing • Items marked “*” are not stocked since they are mark ! or dotted line with mark materials are given in the last of this parts list. seldom required for routine service.
4-3. CHASSIS SECTION supplied Q511 Q612 Q702 Q512 supplied supplied Q611 not supplied Supplied with RV301, supplied RV302,RV303,S801,S903 Supplied with J801 Supplied not supplied with S902 supplied Supplied with RV300 The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified.
SECTION 5 INPUT ELECTRICAL PARTS LIST Note: • Due to standardization, replacements in the parts list • SEMICONDUCTORS The components identified by In each case, u: µ , for example: may be different from the parts specified in the mark ! or dotted line with mark uA...: µ...