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SERVICE MANUAL
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.
Amplifier section
1)
Power Output
(6 ohms 1 kHz, THD 0.7%)
(6 ohms 100 Hz, THD
(6 ohms 1 kHz, THD 10%)
(6 ohms 100 Hz, THD
(6 ohms 1 kHz, THD 10%)
(6 ohms 100 Hz, THD 10%)
1) Measured under the following conditions:
Area code
CND, MX
E51
Sony Corporation
9-877-996-02
Audio Group
2004J16-1
Published by Sony Engineering Corporation
© 2004.10
STR-K1900P
SPECIFICATIONS
2)
FRONT
: 60 W/ch
2)
CENTER
: 60 W
2)
SURR
: 60 W/ch
0.7%)
2)
SUB WOOFER
: 60 W
2)
FRONT
: 80 W/ch
2)
CENTER
: 80 W
2)
SURR
: 80 W/ch
10%)
2)
SUB WOOFER
: 80 W
2)
FRONT
: 70 W/ch
2)
CENTER
: 70 W
2)
SURR
: 70 W/ch
2)
SUB WOOFER
: 70 W
Power requirements
120 V AC, 60 Hz
240 V AC, 50 Hz
2) Depending on the sound field settings and the
source, there may be no sound output.
Inputs (Analog)
DVD, VIDEO
Sensitivity: 800 mV
Impedance: 50 kiloohms
Inputs (Digital)
Sensitivity: −
DVD (Coaxial)
Impedance: 75 ohms
Sensitivity: −
VIDEO (Optical)
Impedance: −
Reproduction frequency range:
28 − 20,000 Hz
Tone
±6 dB, 1 dB step
Gain levels
FM tuner section
Tuning range
87.5 - 108.0 MHz
Antenna
FM wire antenna
Antenna terminals
75 ohms, unbalanced
Intermediate Frequency
10.7 MHz
FM STEREO FM-AM RECEIVER
Canadian Model
E Model
— Continued on next page —

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Summary of Contents for Sony STR-K1900P

  • 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.
  • Page 2: Table Of Contents

    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...
  • Page 3: Unleaded Solder

    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.
  • Page 4: General

    STR-K1900P SECTION 1 This section is extracted GENERAL from instruction manual. Main unit 0  = 180%(56 $1' 6<0%2/6 $/3+$%(7,&$/ 25'(5 &+ EXWWRQLQGLFDWRU  0$,1 0(18     $  /   0$67(5 92/80( ±  $)' EXWWRQLQGLFDWRU  ±...
  • Page 5 STR-K1900P 7KH WDEOHV EHORZ VKRZ WKH VHWWLQJV RI HDFK Remote button EXWWRQ description 5HPRWH 2SHUDWLRQV )XQFWLRQ %XWWRQ $)' 5HFHLYHU 6HOHFWV WKH GHFRGLQJ PRGH IRU DXGLR VRXQG TV ?/1 AV ?/1 5HPRWH :KHQ $/7 EXWWRQ OLJKWV XS LW FKDQJHV WKH SYSTEM STANDBY SLEEP...
  • Page 6 STR-K1900P 5HPRWH 2SHUDWLRQV )XQFWLRQ 5HPRWH 2SHUDWLRQV )XQFWLRQ %XWWRQ %XWWRQ 6+,)7 5HFHLYHU 6HOHFWV D PHPRU\ SDJH '8$/ 5HFHLYHU 6HOHFWV WKH ODQJXDJH \RX IRU SUHVHWWLQJ UDGLR 0212 ZDQW GXULQJ GLJLWDO EURDGFDVW VWDWLRQV RU WXQLQJ WR SUHVHW VWDWLRQV 5HFHLYHU 7R ZDWFK '9' 6/((3...
  • Page 7 STR-K1900P 5HPRWH 2SHUDWLRQV )XQFWLRQ 5HPRWH 2SHUDWLRQV )XQFWLRQ %XWWRQ %XWWRQ ./> 799,'(2 6HOHFWV LQSXW VLJQDO 9&5 6NLSV WUDFNV '9' SOD\HU 79 LQSXW RU YLGHR LQSXW '9' SOD\HU 6HDUFKHV WUDFNV LQ WKH IRUZDUG RU EDFNZDUG 79 92/ $GMXVWV WKH YROXPH RI ±...
  • Page 8: Test Mode

    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.
  • Page 9: Diagrams

    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) •...
  • Page 10: Block Diagrams - Main Section

    STR-K1900P 3-1. BLOCK DIAGRAMS — MAIN SECTION — IC201 ANALOG SOUND TUNER PACK PROCESSOR L CH INL1 75 Ω IC1601(1/3) COAXIAL R CH R-CH SYSTEM CONTROL. ST-DO ST-DI L OUT Q361 SLATCH MUTING STEREO STEREO TUNED TUNED MUTING MUTING J403...
  • Page 11: Display/Power Section

    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...
  • Page 12: Printed Wiring Board - Digital Board (Side A)

    STR-K1900P • See page 9 for Circuit Boards Location. 3-2. PRINTED WIRING BOARD — DIGITAL BOARD (SIDE A) — :Uses unleaded solder. IC1101 IC1202 IC1102 IC1201 IC1501 IC1601 R1666 IC1604 IC1602 • Semiconductor Location Ref. No. Location D1101 D1601 IC1101...
  • Page 13: Printed Wiring Board - Digital Board (Side B)

    STR-K1900P • See page 9 for Circuit Boards Location. 3-3. PRINTED WIRING BOARD — DIGITAL BOARD (SIDE B) — :Uses unleaded solder. STANDBY BOARD MAIN BOARD CNP802 CNP911 TUNER UNIT (Page 20) (Page 16) FM 75 COAXIAL IC1902 IC1104 OPTICAL...
  • Page 14: Schematic Diagram - Digital Board (1/2)

    STR-K1900P • See page 24 for IC Block Diagrams. • See page 9 for Waveforms. 3-4. SCHEMATIC DIAGRAM — DIGITAL BOARD (1/2) — R1315 R1365 R1115 C1129 C1315 0.001 100p C1112 C1111 0.01 FB1202 FB1102 C1365 100p R1107 C1106 5.6k C1107 0.01...
  • Page 15: Schematic Diagram - Digital Board (2/2)

    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...
  • Page 16: Printed Wiring Board - Main Section

    STR-K1900P • See page 9 for Circuit Boards Location. 3-6. PRINTED WIRING BOARD — MAIN SECTION — :Uses unleaded solder. VIDEO AUDIO AUDIO SURROUND CENTER FRONT WOOFER T901 POWER TRANSFORMER (Page 20) IC801 IC802 IC201 DIGITAL BOARD CNS1 IC601 (Page 13)
  • Page 17: Schematic Diagram - Main Section (1/2)

    STR-K1900P • See page 26 for IC Block Diagrams. 3-7. SCHEMATIC DIAGRAM — MAIN SECTION (1/2) — CNP561 JW557 C482 C492 C491 C481 C483 Q361 C484 4.7 50V R373 2SD2144S-TP-UVW R361 C494 4.7 50V 4.7k C371 R363 0.022 100k C372...
  • Page 18: Schematic Diagram - Main Section (2/2)

    STR-K1900P • See page 26 for IC Block Diagrams. 3-8. SCHEMATIC DIAGRAM — MAIN SECTION (2/2) — C792 W700 RY791 R792 680 1W J791 R745 Q703 MN2488-OPY-M R794 R746 C717 Q740 C720 Q701 R719 Q705 2SC1815GR-TPE2 R793 220p 2SA1115TP-EF 4.7k...
  • Page 19: Printed Wiring Board - Sub Woofer Board

    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...
  • Page 20: Printed Wiring Board - Power Section

    STR-K1900P • See page 9 for Circuit Boards Location. 3-11. PRINTED WIRING BOARD — POWER SECTION — :Uses unleaded solder. MAIN BOARD DIGITAL BOARD CNP915 CNP6 (Page 16) (Page 13) VOLTAGE SELECTOR 240V 220V 120V DIGITAL BOARD CNP5 (Page 13)
  • Page 21: Schematic Diagram - Power Section

    STR-K1900P 3-12. SCHEMATIC DIAGRAM — POWER SECTION — D804 HZ6.8BP-TK T901 C822 D815 R910 Q801 R804 10EDB40-TA2B5 0.33 R806 2SB734-T-34 C801 C831 C802 D812 47 35V 10EDB40-TA2B5 CNP802 D801 CNP804 HZS20-1LTA C823 D813 C830 3300 C821 C820 10EDB40-TA2B5 D814 10EDB40-TA2B5...
  • Page 22: Printed Wiring Board - Front Panel Section

    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 23: Schematic Diagram - Front Panel Section

    STR-K1900P • See page 25 for IC Block Diagrams. 3-14. SCHEMATIC DIAGRAM — FRONT PANEL SECTION — C108 R199 R198 FL101 R101 R102 R103 R104 R105 2.2k 2.2k 4.7k C101 R175 R161 S100 S101 S102 S103 S104 S108 D105 SLR-325DCT31...
  • Page 24 STR-K1900P • IC Block Diagrams IC1101 LC89056W-E (DIGITAL BOARD) IC1602 PST3629NR (DIGITAL BOARD) C BIT PA/PB AUDIO DETECT DETECT EMPHA SAMPLING FREQUENCY MICROCOMPUTER INTERFACE XSEL LOCK XOUT CLOCK DETECT XMCK 19 DVDD MODE0 MODE 18 DGND MODE1 SELECT XSTATE DGND...
  • Page 25 STR-K1900P IC100 PT6315 (DISPLAY BOARD) Grid driver Multiplexed driver SEG19/GRID10 Command decoder LED1 SEG18/GRID11 LED2 Display memory LED3 SEG17/GRID12 24 bits x 12 words LED4 Timing generator key scan DOUT SEG16/KS16 Key data memory Serial SEG15/KS15 (2 x 16 bits)
  • Page 26 STR-K1900P IC201 M61527FP (MAIN BOARD) 61 60 INL10/RECL4 SLVIN INR10/RECR4 SLSELOUT AVEE CSELOUT INL9 CVIN INR9 COUT INL8 SWOUT INR8 SWVIN INL7 SWSELOUT INR7 INL6 AVCC INIR6 DVDD INL5 LATCH INR5 DATA INL4 CLOCK INR4 DGND SWIN2 INL3 13 14...
  • 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...
  • Page 30: Exploded Views

    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.
  • Page 31: Chassis Section

    STR-K1900P 4-2. CHASSIS SECTION supplied supplied supplied supplied Q574 Q572 Q603 Q573 Q754 Q604 Q753 Q653 Q654 supplied Q704 Q503 Q504 Q703 F901 supplied #1 #1 supplied T901 supplied supplied supplied supplied supplied supplied Ref. No. Part No. Description Remark Ref.
  • Page 32: Electrical Parts List

    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.
  • Page 33 STR-K1900P DIGITAL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C1523 1-115-416-11 CERAMIC CHIP 0.001uF FB1102 1-469-727-21 FERRITE, EMI (SMD) (2012) FB1104 1-469-710-21 FERRITE, EMI (SMD) (2012) C1552 1-124-778-00 ELECT CHIP 22uF 6.3V FB1105 1-469-710-21 FERRITE, EMI (SMD) (2012)
  • Page 34 STR-K1900P DIGITAL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R1106 1-216-839-11 METAL CHIP 1/10W R1300 1-216-809-11 METAL CHIP 1/10W R1107 1-216-830-11 METAL CHIP 5.6K 1/10W R1108 1-216-809-11 METAL CHIP 1/10W R1301 1-216-809-11 METAL CHIP 1/10W...
  • Page 35 STR-K1900P DIGITAL DISPLAY Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R1644 1-216-821-11 METAL CHIP 1/10W C109 1-164-159-11 CERAMIC 0.1uF R1645 1-216-821-11 METAL CHIP 1/10W C110 1-128-825-11 CERAMIC 2200PF R1646 1-216-821-11 METAL CHIP 1/10W C111 1-128-809-11 CERAMIC...
  • Page 36 STR-K1900P DISPLAY HEADPHONE MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R103 1-249-421-11 CARBON 2.2K 1/4W < CAPACITOR > R104 1-247-847-91 CARBON 4.7K 1/4W R105 1-249-429-11 CARBON 1/4W C371 1-161-494-00 CERAMIC 0.022uF C372 1-161-494-00 CERAMIC 0.022uF...
  • Page 37 STR-K1900P MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C606 1-128-813-11 CERAMIC 220PF C804 1-165-498-11 ELECT 4700uF C607 1-128-809-11 CERAMIC 100PF C805 1-136-497-81 FILM 0.1uF C806 1-136-497-81 FILM 0.1uF C610 1-126-947-11 ELECT 47uF C807 1-104-658-91 ELECT...
  • Page 38 STR-K1900P Ver 1.1 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < TRANSISTOR > R372 1-247-879-91 CARBON 100K 1/4W R373 1-247-831-91 CARBON 1/4W Q361 8-729-922-37 TRANSISTOR 2SD2144S-TP-UVW R374 1-247-831-91 CARBON 1/4W Q362 8-729-922-37 TRANSISTOR 2SD2144S-TP-UVW...
  • Page 39 STR-K1900P MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 0 R614 1-249-405-11 CARBON 1/4W R713 1-249-414-11 CARBON 1/4W 0 R615 0 R714 1-249-405-11 CARBON 1/4W 1-249-405-11 CARBON 1/4W 0 R616 1-234-182-11 ENCAPSULATED COMPONENT 0 R715...
  • Page 40: Power Board

    STR-K1900P MAIN POWER STANDBY Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < RELAY > < DIODE > RY501 1-755-421-11 RELAY D801 8-719-933-95 DIODE HZS20-1LTA RY601 1-755-421-11 RELAY D804 8-719-068-28 DIODE HZ6.8BP-TK RY701 1-755-421-11 RELAY D812...
  • Page 41 STR-K1900P Ver 1.1 SUB WOOFER TUNING Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark A-4750-417-A SUB WOOFER BOARD, COMPLETE R595 1-249-427-11 CARBON 6.8K 1/4W R596 1-249-427-11 CARBON 6.8K 1/4W **************************** < CAPACITOR > R597 1-247-879-91 CARBON...
  • Page 42: Revision History

    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...