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STR-DE375
SERVICE MANUAL Canadian Model
AEP Model
Ver 1.0 2001. 04
UK Model
E Model
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
Amplifier section Front: 50 W/ch Muting Full mute
Center: 50 W
Rated Power
Surround: 50 W/ch TONE ±6 dB at 100 Hz and
Output at Stereo
Canadian model:
10 kHz
Mode
(8 ohms 40 Hz - 20 kHz,
Frequency TV/SAT, CD, MD/T
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STR-DE375 Separation 45 dB at 1 kHz * You can change the AM tuning interval Power Canadian model: between 9 kHz and 10 kHz. Turn off the consumption 240 VA +0.5 Frequency 30 Hz - 15 kHz dB receiver and press ?/1 (power) for more Standby mode: 0.5 W –2 response than 4 seconds until “INITIAL” appears. 1) After tuning in any AM station, turn Malaysia, Singapore model Selectivity 60 dB at 400 kHz off the receiver. 175 W 2) Hold down PRESET TUNING + Standby mode: 0.5 W AM tuner section button and
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STR-DE375 TABLE OF CONTENTS SAFETY CHECK-OUT 1. GENERAL ·········································································· 4 After correcting the original service problem, perform the following safety checks before releasing the set to the customer: 2. TEST MODE ······································································ 6 Check the antenna terminals, metal trim, “metallized” knobs, screws, and all other exposed metal parts for AC leakage. Check leakage as 3. DIAGRAMS des
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STR-DE375 SECTION 1 GENERAL Front Panel 6 78 9 q; 1 2 3 4 5q qas qd qf qg qh qj < > 1?/1(POWER) button 6 SET UP button and indicator qa MENU , buttons + – 2 DISPLAY button 7 NAME button and indicator qs MENU , buttons 3 DIMMER button 8 LEVEL button and indicator qd ENTER button 4 PHONES jack 9 SUR button and indicator qf SOUND FIELD ON/OFF + – 5 PRESET/PTY SELECT , buttons q; VIDEO button (and indicator), + – + – TUNING , buttons TV/SAT button MODE , buttons + – MEM
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STR-DE375 This section is extracted from instruction manual. Rear Panel qa 1 qs 8 9 q; 2 34567 1 ANTENNA (AM/FM) qa VOLTAGE SELECTOR 6 VIDEO 2 DVD/MULTI CH 7 SUB WOOFER (except Singapore, Malaysia and 3 CD 8 SPEAKERS SURROUND Canada models) 4 MD/TAPE 9 SPEAKERS CENTER qs AC power cord 5 TV/SAT q; SPEAKERS FRONT 5
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STR-DE375 SECTION 2 TEST MODE FACTORY SET MODE AM CHANNEL STEP 9 kHz/10 kHz * All preset contents are reset to the default setting. SELECTION MODE * Procedure: * Either the 9 kHz step or 10 kHz step can be selected for the AM While depressing the VIDEO and the CD buttons simultaneously, channel step. press the power ?/1 button to turn on the main power. The * Procedure: message “FACTORY” appears and the present contents are reset Set the FUNCTION to AM. Turn off the main power. to the de
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STR-DE375 SECTION 3 DIAGRAMS 3-1. CIRCUIT BOARDS LOCATION SECONDARY board VOL-SEL board (E model) STANDBY board PRIMARY board (except E model) POWER SWITCH board HEADPHONE board DISPLAY board MAIN board • WAVEFORMS – MAIN BOARD – 1 IC1 qf 2.2Vp-p 230ns – DISPLAY BOARD – 2 IC103 qa 5.0Vp-p 200ns 7
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STR-DE375 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 µ F unless otherwise noted. pF: µµ F •X : parts extracted from the component side. 50 WV or less are not indicated except for electrolytics • : Pattern from the side which enables seeing. and tantalums. 1 • All resistors are in Ω and /4 W or less unless otherwise spe
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STR-DE375 3-2. BLOCK DIAGRAM R-CH J200 POWER AMP IC701 PHONES RY791 BOOSTER +V OUT1 2 RELAY Q703 DRIVE Q791 LIMITER AUDIO SELECT TUNER UNIT Q701 IC201 TM602 L OUT 66 IN F2 L CH OUT 49 6 IN1 NF1 5 L RY710 SPEAKERS FM FM Q707 OVER LOAD D706 D731 RELAY FRONT R OUT R-CH 71 IN A2 MUTE LIMITER R-CH R DETECT DRIVE Q361 Q702 Q708,709 Q730 AM AM DET OUT 61 REC OUT 2A CURRENT BOOSTER -V OUT1 3 DETECT PLL DATA Q704 DATA OUT 70 IN B2 Q705,706 S DATA S DATA 61 REC OUT 2B S CLK S CLK S CE SLAT 63 IN G2 BOOST
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STR-DE375 3-3. PRINTED WIRING BOARD – MAIN SECTION – IC 805 IC 1 IC 401 IC 807 IC 201 IC 202 TO TUNER UNIT IC 803 IC 802 IC 801 IC 501 IC 701 IC 804 • Semiconductor Location Ref. No. Location Ref. No. Location Ref. No. Location Ref. No. Location Ref. No. Location Ref. No. Location TO DISPLAY BOARD D301 D-1 D727 F-5 IC1 C-1 Q365 D-7 Q610 C-9 Q709 F-6 (Page 14) D470 C-8 D728 F-6 IC201 D-5 Q366 D-8 Q651 F-6 Q715 E-10 D505 F-4 D731 C-10 IC202 D-3 Q470 C-8 Q652 G-7 Q722 D-11 D506 F-4 D732 D-11 IC40
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STR-DE375 3-4. SCHEMATIC DIAGRAM – MAIN SECTION(1/3) – IC B/D IC B/D IC B/D 11 11
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STR-DE375 3-5. SCHEMATIC DIAGRAM – MAIN SECTION(2/3) – 1.7uH 1.7uH 1.7uH 1.7uH 1.7uH 12 12
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STR-DE375 3-6. SCHEMATIC DIAGRAM – MAIN SECTION(3/3) – IC B/D 13 13
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STR-DE375 3-7. PRINTED WIRING BOARD – PANEL SECTION – CNS 204 DVD/MULTI CH TV/SAT IC 203 IC 103 (Page 10) PRESET/ PTY SELECT SOUND CONTROL FM MODE PTY FM/AM • Semiconductor Location Ref. No. Location S 200 D201 B-12 D202 B-13 D203 C-11 D204 B-6 D210 C-9 D211 C-8 D212 D-7 D213 D-6 D215 D-6 IC103 B-10 IC203 B-13 Q201 B-7 Q202 B-6 Q210 D-3 Q211 D-3 Q212 D-3 Q213 D-3 Q215 D-3 14 14
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STR-DE375 3-8. SCHEMATIC DIAGRAM – PANEL SECTION – DVD/MULTI CH TV/SAT S231 PRESET/ FM MODE MUTING PTY PTY SELECT + FM/AM PRESET/ PTY SELECT – 15 15
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STR-DE375 3-9. PRINTED WIRING BOARD – POWER SECTION – CND MODEL ONLY 4 16 16 IC 950
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STR-DE375 3-10. SCHEMATIC DIAGRAM – POWER SECTION – IC B/D 17 17
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STR-DE375 3-11. IC BLOCK DIAGRAMS 3-12. IC PIN FUNCTION DESCRIPTION IC103 µ PD780206GF-092-3BA (DISPLAY BOARD) IC1 BU1924 (MAIN BAORD) Pin No. Pin Name I/O Description 1 VDD +5V I Power supply to µ -com 2 S1 O Control Video IC switching (Not used) 16 15 14 13 12 11 10 9 3 S2 O Control Video IC switching (Not used) CLOCK TEST 4 IC.MUTE O Control mute of Video IC (Not used) 5 P34 — Not used 6 P33 — Not used DEFFERENTIAL BIPHASE PLL PLL 57KHz 7 S.DATA (M61501FP) O Volume IC data DECODER DECODER
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STR-DE375 Pin No. Pin Name I/O Description 51 REAR-RY O Control rear relay on/off 52 CTR-RY O Control center relay 53 FRONT-RY O Control speaker relay 54 H/P-RY O Control Headphone relay 55 WOOFER RY O Control Woofer relay 56 SYS.POWER I Detect power switch key 57 P115 — Not used 58 P114 — Not used 59 FUNC.MUTE O Control muting circuit 60 P112 — Not used 61 HP SW I Detect headphone insert 62 P110 — Not used 63 SET UP LED O Control Setup LED 64 NAME LED O Control Name LED 65 LEVEL LED O Control L
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STR-DE375 SECTION 4 EXPLODED VIEWS NOTE: • -XX, -X mean standardized parts, so they may • Color Indication of Appearance Parts Example: The components identified by mark 0 or have some differences from the original one. KNOB, BALANCE (WHITE) . . . (RED) dotted line with mark 0 are critical for safety. ↑ ↑ • Items marked “*” are not stocked since they Replace only with part number specified. Parts of Color Cabinet’s Color are seldom required for routine service. Some Les composants identifiés pa
