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STR-K402 SERVICE MANUAL US Model Ver 1.0 2001. 04 Manufactured under license from Dolby Laboratories Licensing Corporation. “DOLBY” the double-D symbol ; “AC-3” and “Pro Logic” are trademarks of Dolby Laboratories Licensing Corporation. SPECIFICATIONS Impedance: – Intermediate 1) Depending on the sound field settings and AUDIO POWER the sources, there may be no sound output.
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STR-K402 Power consumption Video section AM tuner section 185 W Inputs Video: 1 Vp-p 75 ohms Tuning range In Standby With 10-kHz tuning Condition: Outputs Video: 1 Vp-p 75 ohms scale: 530 - 1710 kHz General With 9-kHz tuning Dimensions 430 × 145 × 298 mm scale: ×...
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 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.
STR-K402 SECTION 2 TEST MODE SOFTWARE VERSION DISPLAY MODE FACTORY SET MODE * The software version is displayed. * All preset contents are reset to the default setting. * Procedure: * Procedure: While depressing the TUNER and the VIDEO buttons...
STR-K402 SECTION 3 DIAGRAMS THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this necessary note is printed in each block.) For schematic diagrams. For printed wiring boards. Note: Note: • All capacitors are in µF unless otherwise noted. pF: µµF •...
STR-K402 3-2. BLOCK DIAGRAM – MAIN SECTION – ANALOG SOUND PROC. — TUNER UNIT — IC201 L OUT IN G2 L OUT R OUT R-CH MUTING ANTENNA Q361 J401 CD IN IN B2 PLL DATA DATA OUT MD/TAPE OUT S DATA...
STR-K402 3-3. BLOCK DIAGRAM – DISPLAY SECTION – R-CH J791 POWER AMP PHONES IC701 RY791 RELAY BOOSTER • R-CH is omitted due to same as L-CH. +V OUT2 DRIVE Q703 Q791 • Signal Path LIMITER : FM Q701 TM602 RY730...
STR-K402 3-7. PRINTED WIRING BOARD – MAIN SECTION – • See page 8 for Circuit Boards Location. There are a few cases that the part printed on this diagram isn’t mounted in this model. TUNER UNIT IC 401 IC 201...
STR-K402 3-9. PRINTED WIRING BOARD – DIGITAL SECTION – • See page 8 for Circuit Boards Location. There are a few cases that the part printed on this diagram isn’t mounted in this model. DIGITAL IC 1002 IC 1003 IC 1005...
STR-K402 3-11. PRINTED WIRING BOARD – DISPLAY SECTION – • See page 8 for Circuit Boards Location. There are a few cases that the part printed on this diagram isn’t mounted in this model. FOR FRASH PROGRAMMING (Page 16) (Page 19)
STR-K402 There are a few cases that the part printed on this diagram isn’ t mounted in this model. 3-12. SCHEMATIC DIAGRAM – VIDEO SECTION – • See page 20 for IC Block Diagram. 3-13. PRINTED WIRING BOARD – POWER SECTION –...
STR-K402 3-16. IC PIN FUNCTION DESCRIPTION • IC102 MB90553ABPF-G-193-BND (SYSTEM CONTROL) Pin No. Pin Name Description Read volume encoder A changing Read volume encoder B changing BLUE LED Control Blue LED DCS LED Control DCS LED AFD LED Control AFD LED...
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STR-K402 Pin No. Pin Name Description — Selection of micom operation mode HSTX — Hardware standby signal RDS CLK Read RDS clock — HP SW Detect headphone switch PW KEY IN Detect power switch key SIRCS Input data from remote control receiver...
STR-K402 SECTION 4 EXPLODED VIEWS NOTE: • -XX, -X mean standardized parts, so they may • The mechanical parts with no reference number The components identified by mark 0 or have some differences from the original one. in the exploded views are not supplied.
STR-K402 4-2. CHASSIS SECTION not supplied not supplied not supplied not supplied not supplied T901 not supplied not supplied Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks A-2007-946-A DIGITAL BOARD,COMPLETE 3-703-244-00 BUSHING (FBS001), CORD 4-232-237-01 FOOT (DIA. 30)
STR-K402 SECTION 5 DIGITAL ELECTRICAL PARTS LIST NOTE: • CAPACITORS: • SEMICONDUCTORS uF: µF In each case, u: µ, for example: • Due to standardization, replacements in the uA...: µA... , uPA... , µPA... , parts list may be different from the parts •...
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STR-K402 REVISION HISTORY Clicking the version allows you to jump to the revised page. Also, clicking the version at the upper right on the revised page allows you to jump to the next revised page. Ver. Date Description of Revision...