Page 1
STR-K1900P SERVICE MANUAL Canadian Model E Model Ver 1.1 2004.10 • STR-K1900P is the tuner and the amplifier section in HT-1900DP. Manufactured under license from Dolby Laboratories. “Dolby”, “Pro Logic” and the double-D symbol are trademarks of Dolby Laboratories. “DTS” and “DTS Digital Surround” are registered trademarks of Digital Theater Systems, Inc.
STR-K1900P TABLE OF CONTENTS AM tuner section Tuning range GENERAL ..............4 Models of area code CND With 10-kHz tuning scale: 530 - 1,710 kHz TEST MODE ............... 8 With 9-kHz tuning scale: 531 - 1,710 kHz Models of area code E51...
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS IN SUPPLEMENTS PUBLISHED BY SONY.
STR-K1900P SECTION 2 TEST MODE FACTORY PRESET MODE SOUND FIELD CLEAR MODE • All preset contents are reset to the default setting. • The preset sound field is cleared when this mode is activated. • Procedure: Use this mode before returning the product to clients upon While depressing the [MAIN MENU] and the [PRESET TUNING-] completion of repair.
STR-K1900P SECTION 3 DIAGRAMS • Circuit Boards Location 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. (p: pF) •...
STR-K1900P — DISPLAY/POWER SECTION — R-CH J791 IC701 PHONES POWER AMP RY791 Q790 Q703 +V OUT2 RELAY BOOSTER DRIVE Q701,702 LIMITER TM602 • R-CH is omitted due to same as L-CH RY701 • Signal Path D731 FRONT Q740 Q710 RELAY...
STR-K1900P • See page 24 for IC Block Diagrams. • See page 27 for IC Function Description. • See page 9 for Waveforms. 3-5. SCHEMATIC DIAGRAM — DIGITAL BOARD (2/2) — C1636 G1101 C1617 0.01 IC1602 CNP5 PST3629NR R1642 C1612...
STR-K1900P • See page 9 for Circuit Boards Location. • See page 26 for IC Block Diagrams. 3-9. PRINTED WIRING BOARD — SUB WOOFER BOARD — 3-10. SCHEMATIC DIAGRAM — SUB WOOFER BOARD — :Uses unleaded solder. MAIN BOARD CNP562...
STR-K1900P • See page 9 for Circuit Boards Location. 3-13. PRINTED WIRING BOARD — FRONT PANEL SECTION — :Uses unleaded solder. IC102 IC100 MUSIC MOVIE A.F.D. D101 MULTICHANNEL DECODING C104 Q100 IC101 MASTER ENTER MAIN VOLUME MENU DIGITAL BOARD >...
Page 27
STR-K1900P • IC Pin Function Description DIGITAL BOARD IC1601 MB90478PF-G-170-BNDE1 (SYSTEM CONTROL) Pin No. Pin Name Description DATAO Audio data signal input from DIR GP9 signal input from DSP BST signal output to DSP HCS signal output to DSP HACN...
Page 28
STR-K1900P Pin No. Pin Name Description STOP AC off detect signal input Operation mode setting input Operation mode setting input Operation mode setting input RDS CLOCK RDS clock signal input (Not used) RDS DATA RDS data signal input (Not used)
Page 29
STR-K1900P Pin No. Pin Name Description Clock signal output to DIR Chip enable signal output to DIR Data signal output to DIR Data signal input from DIR ERROR PLL error muting signal input from DIR XSTATE XSTATE data signal input from DIR...
STR-K1900P SECTION 4 EXPLODED VIEWS NOTE: • -XX and -X mean standardized parts, so they • The mechanical parts with no reference The components identified by mark 0 or may have some difference from the original number in the exploded views are not supplied.
STR-K1900P SECTION 5 ELECTRICAL PARTS LIST AC SELECT DIGITAL NOTE: • Due to standardization, replacements in the • RESISTORS When indicating parts by reference number, parts list may be different from the parts All resistors are in ohms. please include the board name.
STR-K1900P 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 2004.06...
Need help?
Do you have a question about the STR-K1900P and is the answer not in the manual?
Questions and answers