Sony STR-DB840 Service Manual
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Sony STR-DB840 Service Manual

Fm stereo fm/am receiver
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STR-DB840/DB940
SERVICE MANUAL
Manufactured under license from Dolby laboratories. "Dolby", "AC-
3", "Pro Logic" and the double-D symbol ; are trademarks of Dolby
Laboratories.
Manufactured under license from Digital Theater Systems, Inc. US
Pat. No. 5,451,942 and other worldwide patents issued and pending.
"DTS" an d "DTS Digital Surround" are trademarks of Digital Theater
Systems, Inc.
Photo: STR-DB940 (AEP and UK models) (Black type)
SPECIFICATIONS
Canadian Model
Australian Model
Chinese Model
– Continued on next page –
FM STEREO/FM-AM RECEIVER
US Model
AEP Model
UK Model
STR-DB840/DB940
E Model
STR-DB940

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Summary of Contents for Sony STR-DB840

  • Page 1 STR-DB840/DB940 SERVICE MANUAL US Model Canadian Model AEP Model UK Model STR-DB840/DB940 E Model Australian Model Chinese Model STR-DB940 Photo: STR-DB940 (AEP and UK models) (Black type) Manufactured under license from Dolby laboratories. “Dolby”, “AC- 3”, “Pro Logic” and the double-D symbol ; are trademarks of Dolby Laboratories.
  • Page 2 • Abbreviation AU : Australian model CN : Chinese model CA : Canadian model SP : E model CED : AEP and UK models : US model...
  • Page 3 SONY PARTS WHOSE PART NUMBERS APPEAR AS DE FONCTIONNEMENT. NE REMPLACER CES COM- SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB- POSANTS QUE PAR DES PIÈCES SONY DONT LES LISHED BY SONY. NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.

  • Page 4: Table Of Contents

    TABLE OF CONTENTS GENERAL ..............5 DISASSEMBLY ............7 TEST MODE .............. 10 DIAGRAMS 4-1. Block Diagram – MAIN Section (1/2) – ......11 4-2. Block Diagram – MAIN Section (2/2) – ......12 4-3. Block Diagram – DISPLAY/POWER SUPPLY Section – ...... 13 4-4.

  • Page 5: General

    SECTION 1 GENERAL FRONT PANEL PARTS DESCRIPTION MASTER VOLUME MULTI CHANNEL DECODING DIMMER DISPLAY BASS BOOST PRESET CINEMA STUDIO EX. FM / AM SHIFT – A.F.D. 2 CH – MODE ANLG DIRECT 5.1CH INPUT TUNING SPEAKERS DOOR OPEN FUNCTION MUTING MEMORY –...
  • Page 6 5 PRE OUT jack qg TAPE jack (STR-DB940) 6 IMPEDANCE SELECTOR switch qh MD/DAT jack (STR-DB940) 7 AC OUTLET connector MD/TAPE jack (STR-DB840) 8 AC power cord qj CD jack 9 CONTROL A1II jack qk PHONO jack q; 2ND AUDIO OUT jack (STR-DB940)

  • Page 7: Disassembly

    SECTION 2 DISASSEMBLY Note: Follow the disassembly procedure in the numerical order given. CASE 3 case ass'y 1 two screws (flat head) 1 two screws (flat head) 1 two screws (flat head) 1 two screws (flat head) 5.1 IN BOARD, AU SW BOARD, TUNER 5 5.1 IN board, AU SW board 1 wire (flat type) (15 core)
  • Page 8 VIDEO/OSD/JOINT (1) (Q)/JOINT (2) (Q)/S-VIDEO/ DIGITAL BOARDS 3 two screws (BVTP3 × 8) 1 wire (flat type) (21 core) 1 wire (flat type) (15 core) (CN55) (CN51) 4 DIGITAL board 8 VIDEO board (DB840)/OSD board (DB940), JOINT (1) (Q) board (DB840)/ JOINT (2) (Q) board (DB940) S-VIDEO board 5 bracket (digital)
  • Page 9 MAIN BOARD 2 connector (CNS305) 4 three screws (BVTP3 × 8) 5 MAIN board 3 six screws (BV3 × 8) 1 wire (flat type) (23 core) (CNS111)

  • Page 10: Test Mode

    SECTION 3 TEST MODE Fluorescent Indicator Tube Test Mode AM Channel Step 9 kHz/10 kHz Selection Mode (US and Canadian Models) All fluorescent segments are tested. When this test is activated, all segments turn on at the same time, then each segment turns on Either the 9 kHz step or 10 kHz step can be selected for the AM one after another.

  • Page 11: Diagrams

    STR-DB840/DB940 SECTION 4 DIAGRAMS 4-1. BLOCK DIAGRAM – MAIN Section (1/2) – (DB940) SELECTOR IC309 IC330 J306 TUNER TM301 AUDIO TUNER UNIT R CH TM301 Q301 RY301 (ANTENNA) TAPE RELAY 15 14 16 DRIVE 75Ω SELECTOR IC1502 AUDIO SELECT 2CH L...

  • Page 12: Block Diagram - Main Section (2/2)

    STR-DB840/DB940 4-2. BLOCK DIAGRAM – MAIN Section (2/2) – (DB940) VIDEO SELECT IC2005 J810-2 VIDEO 3 VIDEO INPUT –5V J2003 TV/SAT VIDEO IN VIDEO (SW1) DVD/LD VIDEO IN VIDEO (SW2) SYSTEM CONTROLLER VIDEO OUT V2 OUT VIDEO (SW3) IC1201 (2/2)

  • Page 13: Block Diagram - Display/Power Supply Section

    STR-DB840/DB940 4-3. BLOCK DIAGRAM – DISPLAY/POWER SUPPLY Section – POWER AMP (L) R CH J701 IC501 PHONES RY602 BOOSTER RELAY VOLUME Q506 DRIVE RV401 VOL CONT –B Q601 TM501 IC408 IC414 Q505 BIAS DATA DATA Q511 POWER FRONT PROTECTOR BOOSTER...

  • Page 14: Note For Printed Wiring Boards And Schematic Diagrams

    4-4. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS • Circuit Boards Location Note on Printed Wiring Board: Note on Schematic Diagram: • X : parts extracted from the component side. • All capacitors are in µF unless otherwise noted. pF: µµF •...

  • Page 15: Schematic Diagram - Digital Board (1/3)

    STR-DB840/DB940 4-5. SCHEMATIC DIAGRAM – DIGITAL Board (1/3) – • See page 42 for Waveforms. • See page 42 for IC Block Diagrams. (Page 16) (Page 17) (Page 39) (Page 32) (Page 27) (Page 29) (Page 29) The components identified by mark 0 or dotted Les composants identifiés par une marque 0 sont...

  • Page 16: Schematic Diagram – Digital Board (2/3)

    STR-DB840/DB940 4-6. SCHEMATIC DIAGRAM – DIGITAL Board (2/3) – • See page 42 for Waveform. • See page 42 for IC Block Diagrams. (Page 17) (Page 15)

  • Page 17: Schematic Diagram - Digital Board (3/3)

    STR-DB840/DB940 4-7. SCHEMATIC DIAGRAM – DIGITAL Board (3/3) – • See page 42 for Waveform. • See page 42 for IC Block Diagrams. (Page 16) (Page 25) (Page 15) The components identified by mark 0 or dotted Les composants identifiés par une marque 0 sont line with mark 0 are critical for safety.

  • Page 18: Printed Wiring Board - Digital Board (Component Side)

    STR-DB840/DB940 4-8. PRINTED WIRING BOARD – DIGITAL Board (Component Side) – • See page 14 for Circuit Boards Location. (AEP, UK) • Semiconductor Location Ref. No. Location Ref. No. Location Ref. No. Location D1001 D1212 IC1403 D1101 IC1404 IC1503 I-11...

  • Page 19: Printed Wiring Board - Digital Board (Conductor Side)

    STR-DB840/DB940 4-9. PRINTED WIRING BOARD – DIGITAL Board (Conductor Side) – • See page 14 for Circuit Boards Location. S-VIDEO BOARD DISPLAY BOARD (Page 26) (Page 28) CNS215 CNP107 (DB940) (AEP, UK) (DB840) (US, CND) DISPLAY BOARD CNS101 (Page 28)

  • Page 20: Printed Wiring Boards

    STR-DB840/DB940 4-10. PRINTED WIRING BOARDS – VIDEO/JOINT (1) (Q) Boards (DB840) – • See page 14 for Circuit Boards Location. (DB840) CNS211 (Page 26) JOINT (1) (Q) BOARD...

  • Page 21: Schematic Diagram

    STR-DB840/DB940 4-11. SCHEMATIC DIAGRAM – VIDEO/JOINT (1) (Q) Boards (DB840) – • See page 42 for IC Block Diagram. (Page 27)

  • Page 22: Printed Wiring Boards - Osd/Joint (2) (Q) Boards (Db940)

    STR-DB840/DB940 4-12. PRINTED WIRING BOARDS – OSD/JOINT (2) (Q) Boards (DB940) – • See page 14 for Circuit Boards Location. (DB940) (Page 26) CNS211 (EXCEPT US, CND) JOINT (2) (Q) BOARD (EXCEPT US, CND) R2004 R2021 X2001 C2055 (US, CND)

  • Page 23: Schematic Diagram

    STR-DB840/DB940 4-13. SCHEMATIC DIAGRAM – OSD/JOINT (2) (Q) Boards (DB940) – • See page 42 for waveforms. • See page 42 IC Block Diagrams. (Page 29) (Page 27)

  • Page 24: Printed Wiring Board - Au Sw Board

    STR-DB840/DB940 4-14. PRINTED WIRING BOARD – AU SW Board – • See page 14 for Circuit Boards Location. 5.1 IN BOARD (Page 36) CNS301 • Semiconductor Location Ref. No. Location D1501 D1504 D1505 IC1502 IC1505 IC1506 (DB940) IC1507 CNP13 IC1508...

  • Page 25: Schematic Diagram - Au Sw Board

    STR-DB840/DB940 4-15. SCHEMATIC DIAGRAM – AU SW Board – • See page 42 for IC Block Diagram. (Page 17) (Page 37) (Page 31) (Page 32)

  • Page 26: Printed Wiring Board - S-Video Board

    STR-DB840/DB940 4-16. PRINTED WIRING BOARD – S-VIDEO Board – • See page 14 for Circuit Boards Location. (DB940) (DB840) DIGITAL B0ARD CNS1 (Page 19) (DB840) (DB940) (DB840) (DB940) JOINT (1) (Q) BOARD JOINT (2) (Q) BOARD VIDEO 3 BOARD CNP211...

  • Page 27: Schematic Diagram - S-Video Board

    STR-DB840/DB940 4-17. SCHEMATIC DIAGRAM – S-VIDEO Board – • See page 42 for IC Block Diagrams. (Page 23) (Page 21) (Page 35) (Page 15)

  • Page 28: Printed Wiring Board -Display Board

    STR-DB840/DB940 4-18. PRINTED WIRING BOARD – DISPLAY Board – • See page 14 for Circuit Boards Location. (Page 19) (Page 22) (Page 19) (Page 34) (Page 34) (Page 34) (Page 34) • Semiconductor Location Ref. No. Location Ref. No. Location...

  • Page 29: Schematic Diagram - Display Board

    STR-DB840/DB940 4-19. SCHEMATIC DIAGRAM – DISPLAY Board – • See page 42 for Waveforms. • See page 42 for IC Block Diagrams. (Page 23) (Page 35) (Page 35) (Page 35) (Page 35) (Page 15) (Page 15) The components identified by mark 0 or dotted Les composants identifiés par une marque 0 sont...

  • Page 30: Printed Wiring Board - Main Board

    STR-DB840/DB940 4-20. PRINTED WIRING BOARD – MAIN Board – • See page 14 for Circuit Boards Location. • Semiconductor Location (Page 40)(Page 36) Ref. No. Location Ref. No. Location (Page 36) (Page 40) SP BOARD SP BOARD BIAS (RS) BOARD...

  • Page 31: Schematic Diagram - Main Board (1/3)

    STR-DB840/DB940 4-21. SCHEMATIC DIAGRAM – MAIN Board (1/3) – • See page 42 for IC Block Diagrams. (Page 35) (Page 25) (Page 32) (Page 33)

  • Page 32: Schematic Diagram - Main Board (2/3)

    STR-DB840/DB940 4-22. SCHEMATIC DIAGRAM – MAIN Board (2/3) – • See page 42 for IC Block Diagrams. (Page 35) (Page 33) (Page 33) (Page 25) (Page 33) (Page 15) (Page 33) (Page 31) (Page 33)

  • Page 33: Schematic Diagram - Main Board (3/3)

    STR-DB840/DB940 4-23. SCHEMATIC DIAGRAM – MAIN Board (3/3) – (Page 35) (Page 37) (Page 41) (Page 32) (Page 37) (Page 41) (Page 32) (Page 41) (Page 37) (Page 39) (Page 32) (Page 37) (Page 39) (Page 32) (Page 39) (Page 37)

  • Page 34: Printed Wiring Boards - H.p/Muting/Power/Sw/Vol/Video 3 Boards

    STR-DB840/DB940 4-24. PRINTED WIRING BOARDS – H.P/MUTING/POWER/SW/VOL/VIDEO 3 Boards – • See page 14 for Circuit Boards Location. (Page 30) (Page 28) (Page 28) (Page 28) • Semiconductor Location Ref. No. Location D111 D112 D113 D114 D115 (Page 28) (Page 26)

  • Page 35: Schematic Diagram - H.p/Muting/Power/Sw

    STR-DB840/DB940 4-25. SCHEMATIC DIAGRAM – H.P/MUTING/POWER/SW/VOL/VIDEO 3 Boards – (Page 32) (Page 29) (Page 29) (Page 29) (Page 29) (Page 27) (Page 31) (Page 33)

  • Page 36: Printed Wiring Boards - 5.1 In/Bias (C)/Bias (L)

    STR-DB840/DB940 4-26. PRINTED WIRING BOARDS – 5.1 IN/BIAS (C)/BIAS (L)/BIAS (LS)/BIAS (R)/BIAS (RS) Boards – • See page 14 for Circuit Boards Location. MAIN BOARD MAIN BOARD CNP611 CNP511 (Page 30) (Page 30) MAIN BOARD MAIN BOARD CNP561 CNP711 (Page 30)

  • Page 37: Schematic Diagram - 5.1 In/Bias (C)/Bias (L)/Bias (Ls)/Bias (R)/Bias (Rs) Boards

    STR-DB840/DB940 4-27. SCHEMATIC DIAGRAM – 5.1 IN/BIAS (C)/BIAS (L)/BIAS (LS)/BIAS (R)/BIAS (RS) Boards – (Page 33) (Page 33) (Page 25) (Page 33) (Page 33) (Page 33)

  • Page 38: Printed Wiring Boards -Dc (1)/Dc (2) Boards

    STR-DB840/DB940 4-28. PRINTED WIRING BOARDS – DC (1)/DC (2) Boards – • See page 14 for Circuit Boards Location. DC (2) BOARD MAIN BOARD (Page 30) CNP811 AC BOARD AC BOARD CNV902 CNV902 (Page 40) DC (1) BOARD AC BOARD...

  • Page 39: Schematic Diagram -Dc (1)/Dc (2) Boards

    STR-DB840/DB940 4-29. SCHEMATIC DIAGRAM – DC (1)/DC (2) Boards – (Page 33) (Page 33) (Page 33) (Page 15) (Page 41) (Page 41) The components identified by mark 0 or dotted Les composants identifiés par une marque 0 sont line with mark 0 are critical for safety.

  • Page 40: Printed Wiring Boards -Ac/Sp Boards

    STR-DB840/DB940 4-30. PRINTED WIRING BOARDS – AC/SP Boards – • See page 14 for Circuit Boards Location. • Semiconductor Location Ref. No. Location D901 D902 D903 D904 D905 D906 D907 Q901 POWER TRANSFORMER (T901) (Page 38) DC (2) BOARD CNP809...

  • Page 41: Schematic Diagram - Ac/Sp Boards

    STR-DB840/DB940 4-31. SCHEMATIC DIAGRAM – AC/SP Boards – (Page 39) (Page 39) (Page 33) (Page 33) (Page 33) The components identified by mark 0 or dotted Les composants identifiés par une marque 0 sont line with mark 0 are critical for safety.
  • Page 42 • Waveforms • IC Block Diagrams – DISPLAY Board – – DIGITAL Board – – OSD Board – (DB940) IC1 BU1924F-E2 (DIGITAL Board (AEP, UK)) 1 IC1401 <z// (CLK0) 1 IC2004 qg (EXD) 1 IC102 id (XI) 12 11 10 4 Vp-p 4.8 Vp-p 5.4 Vp-p...
  • Page 43 IC105 BA6208 (DISPLAY Board) MOTOR SWITCH DRIVE MOTOR SWITCH DRIVE IC108 NJU3719L (DISPLAY Board) PARALLEL DATA OUTPUT BUFFER LATCH CIRCUIT SHIFT REGISTER CONTROL CIRCUIT DATA IC201 NJM2296D (VIDEO Board (DB840)) IC251, 252 NJM2296D (S-VIDEO Board) IC2005 NJM2296D (OSD Board (DB940)) Vout2 Vin1 Vout3...
  • Page 44 IC253 NJM2145D (S-VIDEO Board (US, Canadian)) IC414-416 TC9299P (MAIN Board) OUT1 INH1 L-CH R-CH R-ch L-ch INH2 DATA DATA INPUT LATCH LATCH CIRCUIT A-GND A-GND CIRCUIT CIRCUIT OUT2-1 OUTPUT SHIFT CIRCUIT REGISTER LEVEL (13bit) LEVEL OUT3-1 SHIFT SHIFT OUT2-2 OUTPUT STROBE CIRCUIT CIRCUIT...
  • Page 45 IC501, 601, 701 uPC2581V (MAIN Board) BIAS CIRCUIT PROTECTOR DRIVE DRIVE DRIVE DRIVE IC1005 TC74ACT153AF (EL) (DIGITAL Board) DATA INPUTS STROBE OUTPUT 2C3 2C2 2C1 2C0 SELECT 2C3 2C2 2C1 2C0 1C3 1C2 1C1 1C0 STROBE 1C3 1C2 1C1 1C0 OUTPUT SELECT DATA INPUTS...
  • Page 46 IC1101 LC89055W-RA8 (DIGITAL Board) AUDIO C BIT PA/PB DETECT DETECT EMPHA SAMPLING XSEL FREQUENCY MICROCOMPUTER MODE0 INTERFACE MODE1 LOCK XOUT CLOCK DGND DETECT XMCK DVDD 19 DVDD 18 DGND XSTATE DATAO LRCK DOSEL0 DATA TIMING DEMODULATOR DOSEL1 CKOUT CKSEL0 CKSEL1 XMODE INPUT CIRCUIT...
  • Page 47 IC1402 IDT71V016S15PH-AUTL (DIGITAL Board) ROW/COLUMN DECODER OUTPUT ENABLE BUFFER 64K x 16 BYTE ENABLE MEMORY CHIP ENABLE BUFFER ARRAY BUFFER I/O 15 I/O 0 I/O 14 I/O 1 I/O 13 I/O 2 I/O 12 I/O 3 I/O 11 I/O 4 I/O 10 I/O 5 I/O 9...

  • Page 48: Ic Pin Function Description

    4-32. IC PIN FUNCTION DESCRIPTION • DIGITAL BOARD IC1101 LC89055W-RA8 (AUDIO INTERFACE RECEIVER) Pin No. Pin Name Description DISEL Input data select terminal (fixed at “L” in this set) DOUT EIAJ data and parity output terminal Not used DIN0 Amp integrate data input from the select switch (IC1005) DIN1 Amp integrate data input terminal Not used (fixed at “L”) DIN2...
  • Page 49 Pin No. Pin Name Description DOSEL0 Data select 0 output terminal (fixed at “L” in this set) DOSEL1 Data select 1 output terminal (fixed at “L” in this set) CKSEL0 System clock select 0 input terminal (fixed at “L” in this set) CKSEL1 System clock select 1 input terminal (fixed at “L”...
  • Page 50 • DIGITAL BOARD IC1201 MB90573PFV-G-296-BND (SYSTEM CONTROLLER) Pin No. Pin Name Description SCLK Serial clock signal output to the dolby digital audio decoder (IC1301) Serial data input from the dolby digital audio decoder (IC1301) Serial data output to the dolby digital audio decoder (IC1301) Chip select signal output to the dolby digital audio decoder (IC1301) Reset signal output to the dolby digital audio decoder (IC1301) DSIG...
  • Page 51 Pin No. Pin Name Description SDATA Tuner data output to the FM/AM tuner unit (TM301) SCLK Tuner clock signal output to the FM/AM tuner unit (TM301) DATA IN PLL data input from the FM/AM tuner unit (TM301) AUSTOP Tuned display detection signal input from the FM/AM tuner unit (TM301) STEREO Stereo detection signal input from the FM/AM tuner unit (TM301) 61, 62...
  • Page 52 Pin No. Pin Name Description DIG-INB Digital input select B control signal output to the select switch (IC1005) DIG-INA Dgital input select A control signal output to the select switch (IC1005) XMODE Reset signal output to the digital audio interface receiver (IC1101) Clock signal output to the digital audio interface receiver (IC1101) Chip enable signal output to the digital audio interface receiver (IC1101) Data output to the digital audio interface receiver (IC1101)
  • Page 53 • DIGITAL BOARD IC1401 CXD2712R (AUDIO DSP) Pin No. Pin Name Description VSS3 — Ground terminal 2 to 5 SOA to SOD Serial data output to the A/D, D/A converter 6, 7 ECJ0, ECJ1 Conditional jump input terminal (fixed at “L” in this set) Not used (fixed at “L”) XHDWR Write data input from the system controller (IC1201)
  • Page 54 Pin No. Pin Name Description CLKI Master clock signal input terminal (10MHz) CLKO Master clock signal output terminal (10MHz) VSS1 — Ground terminal VDD0 — Power supply terminal (+3.3V) AVSS — Ground terminal (for PLL cell) AVDD — Power supply terminal (+3.3V) (for PLL cell) PLLCK PLL output/test clock signal input terminal (for check) PLL cell oscillation enable signal input terminal...
  • Page 55 • DIGITAL BOARD IC1503 AK4527 (A/D, D/A CONVERTER) Pin No. Pin Name Description SDOS Data source select terminal “L”: internal ADC output “H”: DAUX input Control mode select terminal “L”: 3-wire serial “H”: I2C bus SMUTE Soft mute signal input from the system controller (IC1201) BCLK Audio serial data clock signal input from the digital audio interface receiver (IC1101) LRCK...
  • Page 56 • DISPLAY BOARD IC102 MB90553ABPF-G-169-BND (DISPLAY CONTROLLER) Pin No. Pin Name Description EQUALIZER indicator (D123) drive signal output terminal “L”: on SURROUND indicator (D122) drive signal output terminal “L”: on LEVEL LEVEL indicator (D119) drive signal output terminal “L”: on NAME NAME indicator (D151) drive signal output terminal “L”: on SETUP...
  • Page 57 Pin No. Pin Name Description MD 2 signal input from the system controller (IC1201) HW STANDBY Hardware standby signal input to the power control (IC1206) RDS CLOCK Clock signal input from the RDS decoder (IC1) RDS DATA Data input from the RDS decoder (IC1) OSD VSYNC Video sync signal output to the video switch (IC2005) (used for STR-DB940 only) OSD VBLK...
  • Page 58 Pin No. Pin Name Description Learning microprocessor latch signal output to the SIRCS driver (IC106) (used for STR-DB940 only) RESET Reset signal output to the SIRCS driver (IC106) (used for STR-DB940 only) OSD LAY Video latch signal output to the video switch (IC2004) (used for STR-DB940 only)

  • Page 59: Exploded Views

    (US, CND, AEP, UK, AUS) X-4950-431-1 CASE ASSY (BLACK) (US, CND, AEP, UK, AUS) X-4950-432-1 CASE ASSY (SILVER) (AEP, UK, AUS) 4-942-568-51 EMBLEM (NO.5), SONY (E, CH) X-4950-437-1 CASE ASSY (CH) 4-942-568-61 EMBLEM (NO.5), SONY (SILVER) X-4952-845-1 CASE ASSY (E)
  • Page 60 (2) FRONT PANEL SECTION DB940 FL101 not supplied not supplied supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 4-227-129-01 PANEL, FRONT (BLACK) 1-677-007-11 POWER BOARD (DB940: US, CND, AUS) X-4952-753-1 BRACKET (DAMPER L) ASSY 4-227-129-11 PANEL, FRONT (BLACK) (DB940: AEP, UK) 3-973-975-31 DAMPER, OIL 4-227-129-21 PANEL, FRONT (E, CH) 1-677-006-11 SW BOARD...
  • Page 61 (3) CHASSIS SECTION-1 supplied T901 supplied US, CND AEP, UK, E supplied The components identified by Les composants identifiés par une mark 0 or dotted line with marque 0 sont critiques pour la mark 0 are critical for safety. sécurité. Replace only with part num- Ne les remplacer que par une pièce ber specified.
  • Page 62 (4) CHASSIS SECTION-2 supplied supplied supplied supplied not supplied TM301 supplied not supplied not supplied supplied supplied not supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-677-009-11 VOL BOARD 4-227-151-71 PANEL, BACK (DB840: US) 1-677-010-11 VIDEO 3 BOARD 4-227-151-81 PANEL, BACK (DB840: AEP, UK) 1-677-011-11 H.P BOARD 4-227-151-91 PANEL, BACK (DB840: CND)

  • Page 63: Electrical Parts List

    SECTION 6 5.1 IN ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • Items marked “*” are not stocked since they The components identified by mark 0 or dotted line with mark parts list may be different from the parts speci- are seldom required for routine service.
  • Page 64 AU SW Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark A-4428-871-A AU SW BOARD, COMPLETE (DB840) C1562 1-128-858-11 ELECT 22uF A-4428-872-A AU SW BOARD, COMPLETE (EXCEPT DB940: AEP, UK) (DB940: US, CND, E, AUS, CH) C1563 1-119-825-41 ELECT 22uF A-4428-873-A AU SW BOARD, COMPLETE (DB940: AEP, UK)
  • Page 65 AU SW BIAS (C) BIAS (L) BIAS (LS) BIAS (R) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R1529 1-216-033-00 METAL CHIP 1/10W < RESISTOR > R1530 1-216-033-00 METAL CHIP 1/10W R621 1-247-843-11 CARBON 3.3K 1/4W R1532 1-216-085-00 METAL CHIP 1/10W...
  • Page 66 BIAS (RS) DC (1) DC (2) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-676-987-11 BIAS (RS) BOARD C811 1-119-815-21 ELECT 2200uF (DB940) ************** < CAPACITOR > C811 1-127-732-51 ELECT MELF 2200uF (DB840) C770 1-119-799-11 ELECT 47uF C812 1-119-814-21 ELECT...
  • Page 67 DC (2) DIGITAL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < RESISTOR > C1157 1-165-319-11 CERAMIC CHIP 0.1uF C1201 1-119-824-11 ELECT MELF 10uF 0 R801 1-247-727-11 CARBON 1/2W F C1202 1-165-319-11 CERAMIC CHIP 0.1uF 0 R802 1-249-401-11 CARBON 1/4W F C1203...
  • Page 68 DIGITAL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C1313 1-165-319-11 CERAMIC CHIP 0.1uF < CONNECTOR > C1314 1-165-319-11 CERAMIC CHIP 0.1uF CNP4 1-784-923-11 PIN, CONNECTOR 7P C1315 1-163-021-11 CERAMIC CHIP 0.01uF CNP7 1-784-927-11 PIN, CONNECTOR 12P C1401 1-165-319-11 CERAMIC CHIP 0.1uF...
  • Page 69 DIGITAL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark IC1204 8-759-231-53 IC M5F7805L R1104 1-216-022-00 METAL CHIP 1/10W IC1205 8-759-231-53 IC M5F7805L R1105 1-216-066-00 METAL CHIP 5.1K 1/10W IC1206 8-759-544-04 IC NJM2103M-TE2 R1106 1-216-071-00 METAL CHIP 8.2K 1/10W IC1207 8-759-231-53 IC M5F7805L...

  • Page 70: Digital Display

    DIGITAL DISPLAY Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R1247 1-216-073-00 METAL CHIP 1/10W R1248 1-216-073-00 METAL CHIP 1/10W R1407 1-216-025-00 RES-CHIP 1/10W R1249 1-216-049-11 RES-CHIP 1/10W R1408 1-216-025-00 RES-CHIP 1/10W R1409 1-216-025-00 RES-CHIP 1/10W R1250 1-216-025-00 RES-CHIP 1/10W...
  • Page 71 DISPLAY Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < CAPACITOR > D121 8-719-072-82 LED SELU5E20C-STP15 (MULTI CHANNEL DECODING) C102 1-162-306-11 CERAMIC 0.01uF D130 8-719-911-19 DIODE 1SS133T-72 (AEP, UK) C103 1-162-306-11 CERAMIC 0.01uF D132 8-719-911-19 DIODE 1SS133T-72 (E, AUS, CH) C104 1-126-967-11 ELECT 47uF...
  • Page 72 DISPLAY Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 0 R107 1-249-385-11 CARBON 1/6W F R190 1-249-409-11 CARBON 1/4W 0 R108 1-249-385-11 CARBON 1/6W F R109 1-249-429-11 CARBON 1/4W R191 1-249-409-11 CARBON 1/4W R110 1-249-429-11 CARBON 1/4W R192 1-249-409-11 CARBON...
  • Page 73 DISPLAY JOINT (1) (Q) JOINT (2) (Q) MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark X101 1-781-356-21 VIBRATOR, CERAMIC (16NHz) C311 1-128-858-11 ELECT 22uF (EXCEPT DB940: AEP, UK) ************************************************************** C312 1-164-159-11 CERAMIC 0.1uF 1-677-011-11 H.P BOARD C313 1-164-159-11 CERAMIC 0.1uF...
  • Page 74 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C404 1-128-809-11 CERAMIC 100PF C496 1-119-804-21 ELECT 1000uF C410 1-119-825-41 ELECT 22uF (DB940: AEP, UK) (DB940: AEP, UK) C496 1-127-731-51 ELECT MELF 1000uF C410 1-128-858-11 ELECT 22uF (EXCEPT DB940: AEP, UK) (EXCEPT DB940: AEP, UK) C497...
  • Page 75 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C603 1-102-233-00 CERAMIC 33PF 500V C605 1-119-779-11 ELECT 220uF CNP603 1-784-921-11 PIN, CONNECTOR 4P (DB940: AEP, UK) CNP611 1-784-921-11 PIN, CONNECTOR 4P C605 1-128-832-11 ELECT 220uF CNP711 1-784-921-11 PIN, CONNECTOR 4P (EXCEPT DB940: AEP, UK) CNP751 1-779-978-21 PIN, CONNECTOR 3P CNP761 1-784-921-11 PIN, CONNECTOR 4P...
  • Page 76 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark D799 8-719-911-19 DIODE 1SS133T-72 Q556 8-749-010-25 IC MN2488-OPY-M (DB840) Q557 8-729-051-93 TRANSISTOR 2SB1647 (DB940) < IC > Q557 8-749-010-26 IC MP1620-OPY-M (DB840) Q558 8-729-140-82 TRANSISTOR 2SA988TP-PAFAEA IC301 8-759-582-64 IC TC9273N-004 IC302 8-759-636-74 IC M5218AP-22...
  • Page 77 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 0 R315 1-249-393-11 CARBON 1/4W F (DB940) (DB940) R396 1-249-417-11 CARBON 1/4W R316 1-249-421-11 CARBON 2.2K 1/4W R398 1-249-417-11 CARBON 1/4W R317 1-249-417-11 CARBON 1/4W R399 1-249-441-11 CARBON 100K 1/4W R318...
  • Page 78 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 0 R534 1-249-389-11 CARBON 1/4W F R631 1-249-433-11 CARBON 1/4W R535 1-249-431-11 CARBON 1/4W R632 1-249-437-11 CARBON 1/4W R539 1-249-427-11 CARBON 6.8K 1/4W R540 1-249-417-11 CARBON 1/4W 0 R633 1-249-393-11 CARBON 1/4W F...
  • Page 79 MAIN MUTING Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R751 1-249-417-11 CARBON 1/4W A-4428-858-A OSD BOARD, COMPLETE (DB940: US, CND) R752 1-249-439-11 CARBON 1/4W A-4428-859-A OSD BOARD, COMPLETE R753 1-249-439-11 CARBON 1/4W (DB940: AEP, UK, E, AUS, CH) R754 1-249-418-11 CARBON 1.2K...
  • Page 80 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C2050 1-126-916-11 ELECT 1000uF 6.3V < COIL > C2051 1-126-964-11 ELECT 10uF L2001 1-410-973-11 INDUCTOR 22uH C2052 1-164-159-11 CERAMIC 0.1uF C2053 1-127-868-11 CERAMIC 2200PF < TRANSISTOR > C2054 1-126-960-11 ELECT C2055 1-164-159-11 CERAMIC...
  • Page 81 POWER Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark X2002 1-781-821-21 VIBRATOR, CRYSTAL (14MHz) JJ102 1-785-298-11 JACK, PIN 1P (CENTER) (DB940) ************************************************************** < COIL > 1-677-007-11 POWER BOARD L601 1-411-906-11 COIL, AIR-CORE ************* L701 1-411-906-11 COIL, AIR-CORE <...
  • Page 82 S-VIDEO Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark D115 8-719-032-98 LED SEL5820A-TP15 (SET UP) S132 1-762-875-21 SWITCH, KEYBOARD (SHIFT) S133 1-762-875-21 SWITCH, KEYBOARD (PRESET TUNING -) < RESISTOR > S141 1-762-875-21 SWITCH, KEYBOARD (A) R112 1-249-411-11 CARBON 1/4W S142...
  • Page 83 S-VIDEO VIDEO VIDEO 3 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C202 1-126-964-11 ELECT 10uF < IC > C203 1-126-964-11 ELECT 10uF C204 1-126-964-11 ELECT 10uF IC251 8-759-529-20 IC NJM2296D C205 1-128-805-11 CERAMIC 47PF IC252 8-759-529-20 IC NJM2296D IC253 8-759-666-33 IC NJM2145D (US, CND)
  • Page 84 VIDEO 3 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < EARTH TERMINAL > ************** HARDWARE LIST * EB702 1-537-738-21 TERMINAL, EARTH ************** < JACK > 7-685-646-79 SCREW +BVTP 3X8 TYPE2 IT-3 7-685-853-04 SCREW +BVTT 2X6 (S) J809 1-784-808-11 TERMINAL, S (VIDEO 3 INPUT) 7-685-645-79 SCREW +BVTP 3X6 TYPE2 IT-3...
  • Page 85 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 4-978-977-01 LID, BATTERY CASE (for RM-PP404) 8-917-423-90 REMOTE COMMANDER RM-PP404 (DB840: AEP, UK)
  • Page 86 STR-DB840/DB940 Sony Corporation 9-929-215-11 2000D0585-1 Audio Entertainment Group Printed in Japan C 2000. 4 Published by HA Quality Assurance Dept.

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