COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE 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.
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 •...
TA-FB930R 3-6. SCHEMATIC DIAGRAM – PANEL SECTION – • See page 5 for Waveform. • See page 14 for IC Block Diagrams. • See page 14 for IC Pin Function. (Page 6) (Page 10) (Page 8) (Page 8) (Page 6)
3-10. IC BLOCK DIAGRAMS 3-11. IC PIN FUNCTION • IC902 Input Control & LED Drive (TMP47C103N-JP47) (Panel Board) • Main Board 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) VOL + Motor drive output (+)
SECTION 4 EXPLODED VIEWS NOTE: The components identified by • The mechanical parts with no reference number in • -XX, -X mean standardized parts, so they may have mark ! or dotted line with mark the exploded views are not supplied. some difference from the original one.
4-3. CHASSIS SECTION supplied Q511 Q611 Q612 Q702 Q512 supplied supplied supplied Supplied with RV301, supplied RV302,RV303,S801,S903 supplied not supplied supplied Supplied with J801 Supplied not supplied with S902 Supplied with RV300 The components identified by mark ! or dotted line with mark ! are critical for safety.
SECTION 5 INPUT ELECTRICAL PARTS LIST Note: • SEMICONDUCTORS • Due to standardization, replacements in the parts list 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...