ملخص المحتوى في الصفحة رقم 1
STR-DE845/DE945
SERVICE MANUAL US Model
Canadian Model
STR-DE845/DE945
E Model
Australian Model
Chinese Model
PX Model
STR-DE845
Photo: STR-DE945
Manufactured under license from Dolby labora-
tories. “Dolby”, “AC-3”, “Pro Logic” and the double-
D symbol ; are trademarks of Dolby Laborato-
ries.
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 Digi-
tal Theater Sy
ملخص المحتوى في الصفحة رقم 2
Models of area code E AC outlets FM tuner section General With 10-kHz tuning Models of area code U, Tuning range 87.5 - 108.0 MHz System Tuner section: scale: CA 6) PLL quartz-locked 530 – 1610 kHz 2 switched, Antenna terminals digital synthesizer With 9-kHz tuning total 120 W/1A 75 ohms, unbalanced system scale: Models of area code Preamplifier section: 6) 531 – 1602 kHz AU, SP Sensitivity Mono: 18.3 dBf, Low-noise NF type 1 switched, 2.2 µ V/75 ohms equalizer Antenna Loop antenna total 100 W
ملخص المحتوى في الصفحة رقم 3
SAFETY CHECK-OUT TABLE OF CONTENTS After correcting the original service problem, perform the follow- ing safety check before releasing the set to the customer: 1. GENERAL ................................................................... 4 Check the antenna terminals, metal trim, “metallized” knobs, screws, and all other exposed metal parts for AC leakage. 2. DISASSEMBLY ......................................................... 6 Check leakage as described below. 3. TEST MODE .............
ملخص المحتوى في الصفحة رقم 4
SECTION 1 GENERAL Location of controls – Front view – (STR-DE945 only) (STR-DE845 only) 12 34 4 5 MULTI CHANNEL DECODING PRESET –+ SHIFT TUNING DIMMER DISPLAY –+ TUNING MEMORY EQUALIZER BASS BOOST FM/AM FM MODE 2ND AUDIO INPUT MODE 5.1CH INPUT MASTER VOLUME SPEAKERS A OFF B – + 5.1CH BASS A+B VIDEO 1 VIDEO 2 VIDEO 3 DVD/LD TV/SAT INPUT CINEMA STUDIO EX. LEVEL SET UP MUTING EQUALIZER BOOST AB C SUR NAME SOUND FIELD TAPE MD/DAT CD TUNER PHONO VIDEO 3 INPUT PHONES A.F.D. 2CH MODE EQ ENTER 010 VIDE
ملخص المحتوى في الصفحة رقم 5
– Rear View – 1 23 4 5 6 FRONT REAR CENTER OPTICAL COAX SPEAKERS AUDIO OUT ANTENNA RL MD/DAT MD/DAT TV/SAT DVD/LD DVD/LD BA L IN OUT IN IN IN + + + + AM R RL RL SUB – – WOOFER 5.1CH INPUT DIGITAL SUB WOOFER U RL FRONT – – 4 Ω 8 Ω COAXIAL CTRL S S-VIDEO CTRL S S-VIDEO S-VIDEO CTRL S CTRL S S-VIDEO S-VIDEO FRONT REAR CENTER FM IN OUT STATUS IN IN IN OUT OUT OUT IN IMPEDANCE SELECTOR 75Ω IMPEDANCE USE 4 – 16Ω 8 – 16Ω VIDEO OUT AC OUTLET SIGNAL GND U MONITOR CONTROL A1 VIDEO IN VIDEO IN VIDE
ملخص المحتوى في الصفحة رقم 6
SECTION 2 DISASSEMBLY Note: Follow the disassembly procedure in the numerical order given. CASE 3 case 1 two screws 1 two screws 2 2 1 two screws 5.1 IN BOARD, AU SW BOARD, TUNER 5 5.1 IN board, AU SW board 1 wire (flat type) (15 core) 2 connector (CN1) (CNP10) 4 tuner 3 four screws (BVTP 3X8 ) 6
ملخص المحتوى في الصفحة رقم 7
VIDEO/OSD/JOINT (1) (H)/OSD JOINT (H)/ S-VIDEO/DIGITAL BOARD 3 screw (BVTP 3X8 ) 1 wire (flat type) (21 core) (CN55) 1 wire (flat type) (15 core) (CN51) 4 DIGITAL board 8 VIDEO board (DE845)/OSD board (DE945), JOINT (1) (H) board (DE845)/OSD JOINT (H) board (DE945) S-VIDEO board 5 bracket (digital) 2 three screws DE945 (BVTP 3X8 ) 6 connector (CNS213) 7 seven screws (BVTP 3X8 ) HEAT SINK 5 heat sink 4 screw (BVTP 3X8 ) 4 screw (BVTP 3X8 ) 3 two screws (BVTP 3X6) 1 five connectors 2 ten screws
ملخص المحتوى في الصفحة رقم 8
VOL BOARD, MAIN BOARD DE945 6 connector (CNS305) 7 three screws (BVTP 3X8 ) 8 MAIN board 5 four screws (BVTP 3X8 ) 1 wire (flat type) (23 core) (CNS111) 4 VOL board 3 washer 2 knob 8
ملخص المحتوى في الصفحة رقم 9
SECTION 3 TEST MODE Fluorescent Indicator Tube Test Mode AM Channel Step 9 kHz/10 kHz All fluorescent segments are tested. When this test is activated, Selection Mode (US, Canadian, and E Models) 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. channel step. Procedure: Procedure: 1. While depressing, the [A.F.D] and the [DIMMER] buttons si- 1. Set the FUNCTION to AM. Turn off the main power. mu
ملخص المحتوى في الصفحة رقم 10
MEMO 10
ملخص المحتوى في الصفحة رقم 11
STR-DE845/DE945 SECTION 4 DIAGRAMS (DE945) 4-1. BLOCK DIAGRAM – MAIN Section (1/2) – SELECTOR IC309 IC330 J306 L 2ND 26 TUNER COM 26 TM301 AUDIO TUNER UNIT 27 CD COM 27 R OUT R CH 25 MD COM 25 Q301 RY301 TAPE 23 RELAY TM301 15 14 16 DRIVE (ANTENNA) (DE945) SELECTOR IC1502 FM FM 75Ω AUDIO SELECT 19 2CH L IC301 SELECTOR AM AM 18 CDL IC1510 IC303 IC304 J305 L OUT AUDIO CODEC L 10 3 20 S.1-L 17 FRONT L L OUT TV/SAT INPUT L 27 IC1504 IC1504 IC1503 R OUT R CH 12 MUTE 4 23 S.1-LS REAR L DVD/LD INPUT
ملخص المحتوى في الصفحة رقم 12
STR-DE845/DE945 4-2. BLOCK DIAGRAM – MAIN Section (2/2) – (DE945) VIDEO SELECT IC2005 J299-2 VIDEO 3 7 V3 VCC 16 +5V VIDEO INPUT VEE 8 –5V J2003 TV/SAT VIDEO IN 3 TV SW1 14 77 VIDEO (SW1) DVD/LD VIDEO IN 5 LD SW2 10 76 VIDEO (SW2) SYSTEM CONTROLLER VIDEO OUT 11 V2 OUT SW3 4 75 VIDEO (SW3) IC1201 (2/2) VIDEO 2 SW4 6 72 VIDEO (SW4) J2002 D2003 D2004 VIDEO IN 9 V2 IN VIDEO OUT 15 V1 OUT SW5 2 VIDEO 1 VIDEO IN 13 V1 IN3 M OUT 1 Y SWITCH IC252 3 V1 OUT 15 TV Y Y J252-2 14 J253-1 SW1 VIDEO 1 5 LD
ملخص المحتوى في الصفحة رقم 13
STR-DE845/DE945 4-3. BLOCK DIAGRAM – DISPLAY/POWER SUPPLY Section – POWER AMP (L) R CH IC501 J701 PHONES +B 13 VCC RY602 BOOSTER +VE 12 14 VCC RELAY VOLUME Q506 DRIVE RV401 VOL CONT –B 15 VEE Q601 TM501 IC408 IC414 L 31 Q505 IN 9 3 OUT 2 8 IN NF L BIAS DATA A 9 DATA Q511 CLK R 8 CLK AF DETECTOR FRONT 1 MUT LAT Q509,510 BOOSTER CUR DET 10 LAT 11 L –VE Q507 Q508 B RY501 • SIGNAL PATH IC409 VOL CONT R CH R RELAY POWER AMP (C/W) (1/2) IC415 C DRIVE IC601 31 : FM IN Q546 3 OUT 2 SPEAKERS +B 13 VC
ملخص المحتوى في الصفحة رقم 14
4-4. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS • Circuit Boards Location Note on Schematic Diagram: Note on Printed Wiring Board: • All capacitors are in µF unless otherwise noted. pF: µµF •X : parts extracted from the component side. 50 WV or less are not indicated except for electrolytics SP board DC (2) board •Y : parts extracted from the conductor side. and tantalums. • a : Through hole. f • : internal component. •b : Pattern from the side which enables seeing. AC board •
ملخص المحتوى في الصفحة رقم 15
STR-DE845/DE945 4-5. SCHEMATIC DIAGRAM – DIGITAL Board (1/3) –• See page 42 for Waveform. • See page 42 for IC Block Diagram. (Page 16) (Page 17) PIN FUNCTION (Page 39) (Page 27) (Page 29) (Page 32) (Page 29) 15 15
ملخص المحتوى في الصفحة رقم 16
STR-DE845/DE945 4-6. SCHEMATIC DIAGRAM – DIGITAL Board (2/3) –• See page 42 for Waveform. • See page 42 for IC Block Diagrams. PIN FUNCTION (Page 17) (Page 15) 16 16
ملخص المحتوى في الصفحة رقم 17
STR-DE845/DE945 4-7. SCHEMATIC DIAGRAM – DIGITAL Board (3/3) –• See page 42 for Waveform. • See page 42 for IC Block Diagrams. (Page 16) PIN FUNCTION PIN FUNCTION (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. critiques pour la sécurité. Ne les remplacer que Replace only with part number specified. par une pièce portant le numéro spécifié. 17 17
ملخص المحتوى في الصفحة رقم 18
STR-DE845/DE945 4-8. PRINTED WIRING BOARD – DIGITAL Board (Component Side) –• See page 14 for Circuit Boards Location. • Semiconductor Location Ref. No. Location Ref. No. Location D1001 I-2 IC1201 D-4 D1101 F-3 IC1202 F-5 D1201 B-3 IC1301 H-5 D1202 D-2 IC1401 G-8 D1203 D-5 IC1402 I-8 D1204 G-12 IC1403 J-7 D1205 G-12 IC1404 I-4 D1208 F-15 IC1503 I-11 D1209 F-2 IC1504 H-12 D1210 D-4 IC1554 G-11 D1211 G-16 D1212 B-1 Q1201 E-6 Q1202 E-6 IC1005 I-2 Q1203 E-2 IC1007 I-1 Q1204 E-2 IC1101 H-3 18 18
ملخص المحتوى في الصفحة رقم 19
STR-DE845/DE945 4-9. PRINTED WIRING BOARD – DIGITAL Board (Conductor Side) –• See page 14 for Circuit Boards Location. (Page 28) (Page 26) (Page 28) (Page 30) (Page 38) (Page 24) • Semiconductor Location Ref. No. Location Ref. No. Location D1206 F-14 IC1204 J-17 D1207 F-13 IC1205 F-14 D1502 I-11 IC1206 H-16 D1503 I-11 IC1207 H-14 IC1208 G-13 IC1001 F-1 IC1501 J-15 IC1002 E-1 IC1511 B-6 IC1003 D-1 IC1004 C-1 Q1205 G-17 IC1203 J-14 19 19
ملخص المحتوى في الصفحة رقم 20
STR-DE845/DE945 4-10. PRINTED WIRING BOARDS – VIDEO/JOINT (1) (H) Boards (DE845) –• See page 14 for Circuit Boards Location. (Page 26) TO VIDEO BOARD TO JOINT (1) (H) BOARD 20 20
