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Sony STR-DE225 Service Manual
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Sony STR-DE225 Service Manual

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STR-DE225/DE325
QQ
3 7 63 1515 0
SERVICE MANUAL
Manufactured under license from Dolby Laboratories
Licensing Corporation.
"DOLBY", "PRO LOGIC" and the double-D symbol are
trademarks of Dolby Laboratories Licensing Corporation.
TE
L 13942296513
Amplifier section
Power output
Stereo mode
(DIN 1 kHz, 4 ohms)
STR-DE325: 90 W + 90 W
STR-DE225: 40 W + 40 W
Surround
(DIN 1 kHz, 4 ohms)
mode
Front: STR-DE325: 90W/ch
STR-DE225: 40W/ch
Centre: STR-DE325: 90W
STR-DE225: 40W
(only in PRO LOG IC MODE)
REAR: STR-DE325:
(DIN 1 kHz, 4ohms) 90 W
STR-DE225: (DIN 1 kHz,
4ohms) 40 W
5.1/DVD
Front: 90 W/ch
INPUT * mode
(DIN 1 kHz, 4 ohms)
Centre: 90 W
(DIN 1 kHz, 4 ohms)
Rear: 45 W/ch
(DIN 1 kHz, 8 ohms)
(except STR-DE225)
Frequency
PHONO: RIAA(except STR-DE225)
response
equalization curve ±0.5 dB
TV / LD, CD, TAPE / MD,
VIDEO, 5.1/DVD INPUT*:
10Hz - 50kHz ±1dB
www
.
MICROFILM
http://www.xiaoyu163.com
Photo : STR-DE225
Input
PHONO
(STR-DE325)
(MM)
CD,
5.1/DVD
INPUT*
TAPE/MD,
TV/LD,
VIDEO
Outputs
Muting
BASS BOOST
TONE
x
ao
u163
y
i
http://www.xiaoyu163.com
2 9
8
SPECIFICATIONS
Q Q
3
6 7
1 3
1 5
Sensitivity Impedance S/N
(Weighting
network,
input level)
50
74 dB
2.5mV kilohms
72 dB**
(A, 2.5 mV)
200 mV
50
82 dB
kilohms
82 dB**
**'78IHF
TAPE/MD REC OUT:
Voltage: 150 mV,
Impedance: 10 kilohms
VIDEO AUDIO OUT:
Voltage: 150 mV,
Impedance: 10 kilohms
WOOFER/MIX AUDIO
OUT: Voltage: 2V
Impedance: 10 kilohms
PHONES: Accepts low and high
impedance headphones
Full mute
+10dB at 70 Hz
±8dB at 100 Hz and 10 kHz
FM STEREO/FM-AM RECEIVER
co
.
9 4
2 8
AEP Model
Canadian Model
STR-DE225/DE325
US Model
E Model
Australian Model
Chinese Model
UK Model
0 5
8
2 9
9 4
2 8
FM tuner section
Tuning range
87.5 – 108.0 MHz
Aerial terminals
75 ohms, unbalanced
Sensitivity
Mono: 18.3 dBf, 2.2µV /75 ohms
Stereo: 38.3 dBf, 22.5µV /75
ohms
Usable sensitivity 11.2 dBf, 1V /75 ohms (IHF)
S/N
Mono: 76 dB
Stereo: 70dB
Harmonic
Mono: 0.3 %
distortion at
Stereo: 0.5 %
1 kHz
Separation
45dB at 1 kHz
Frequency
30 Hz – 15kHz
+0.5
–2
response
Selectivity
60 dB at 400 kHz
AM tuner section
Tuning range
531 – 1602 kHz
Aerial
Loop aerial
Usable sensitivity 50 dB/m (at 999 kHz)
S/N
54 dB(at 50 mV/m)
Harmonic
0.5%(50 mV/m, 400Hz)
distortion
Selectivity
35 dB
— Continued on next page —
m
9 9
STR-DE325
STR-DE225
9 9
dB

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Summary of Contents for Sony STR-DE225

  • Page 1 (DIN 1 kHz, 4 ohms) (Weighting Sensitivity Mono: 18.3 dBf, 2.2µV /75 ohms STR-DE325: 90 W + 90 W network, Stereo: 38.3 dBf, 22.5µV /75 STR-DE225: 40 W + 40 W input level) ohms Surround (DIN 1 kHz, 4 ohms) PHONO 74 dB Usable sensitivity 11.2 dBf, 1V /75 ohms (IHF)

  • Page 2: Table Of Contents

    DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE Earth Ground REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU Fig. A. Using an AC voltmeter to check AC leakage.
  • Page 3 !§ !∞ !¢ !£ !™ !¡ !º Photo : STR-DE225 1 POWER switch (I/u) !¶ CD FUNCTION button 2 CENTER LEVEL +, – buttons !• VIDEO FUNCTION button 3 REAR LEVEL +, – buttons !ª TV/LD FUNCTION button 4 PRO LOGIC, C.STUDIO, HALL indicators @º...

  • Page 4: Test Mode

    http://www.xiaoyu163.com SECTION 2 TEST MODE 3 7 63 1515 0 INITIALIZATION MODE AM CHANNEL STEP 9 kHz/10 kHz * All preset contents are cleared when this mode is activated. Use SELECTION MODE this mode before returning the product to clients upon completion * Either the 9 kHz step or 10 kHz step can be selected for the AM of repair.

  • Page 5: Diagrams

    http://www.xiaoyu163.com SECTION 3 DIAGRAMS 3 7 63 1515 0 3-1. CIRCUIT BOARDS LOCATION SECONDARY board PRIMARY board STAND BY board DISPLAY board MIX-OUT board SP-SW board SP-SW-A board MAIN board SP-SW-B board 10 KEY board VOLUME board L 13942296513 VR-TONE board u163 —...
  • Page 6 http://www.xiaoyu163.com 3 7 63 1515 0 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. pF: µµF •...

  • Page 7: Block Diagram

    STR-DE225/DE325 3 7 6 3 1 5 1 5 0 3-2. BLOCK DIAGRAM TUNER BLOCK AUDIO SELECTOR SURROUND IC401 PROCESSOR IC300 BASS TREBLE RV422 RV421 FM ANT POWER AMP L OUT LT IN L OUT (75Ω) IC701 MUTE AM ANT...

  • Page 8: Schematic Diagram - Display Section

    STR-DE225/DE325 3-3. SCHEMATIC DIAGRAM — DISPLAY SECTION — 3 7 6 3 1 5 1 5 0 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 — 9 — — 10 —...

  • Page 9: Printed Wiring Boards - Display Section

    STR-DE225/DE325 3-4. PRINTED WIRING BOARDS — DISPLAY SECTION — 3 7 6 3 1 5 1 5 0 DISPLAY BOARD DE225:CND DE325:EXCEPT AEP,G,EE MODEL DE225:AEP,G,EE,UK DE325:AEP,G,EE MODEL 34 35 FL201 DE325:E,EA,CH (PRO LOGIC) CENTER AUS,SP,MY MODEL LEVEL (C.STUDIO) DE225:AEP,G,EE,UK...

  • Page 10: Schematic Diagram - Power Section

    STR-DE225/DE325 3-5. SCHEMATIC DIAGRAM — POWER SECTION — 3 7 6 3 1 5 1 5 0 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 — 13 — — 14 —...

  • Page 11: Printed Wiring Boards - Power Section

    STR-DE225/DE325 3-6. PRINTED WIRING BOARDS — POWER SECTION — 3 7 6 3 1 5 1 5 0 EXCEPT DE325:E,EA MODEL • Semiconductor SP-SW BOARD PRIMARY BOARD SECONDARY BOARD Location Ref. No. Location J741 PHONES D816 T901 F901 POWER...

  • Page 12: Printed Wiring Boards - Main Section

    STR-DE225/DE325 3-7. PRINTED WIRING BOARDS — MAIN SECTION — 3 7 6 3 1 5 1 5 0 • Semiconductor EXCEPT Location DE325:AEP,G,EE J402 J403 MODEL Ref. No. Location DE325:AEP,G,EE J401 J402 J403 TM601 TM701 D610 MODEL TAPE MD...

  • Page 13: Schematic Diagram - Main Section (2/3)

    STR-DE225/DE325 3-8. SCHEMATIC DIAGRAM — MAIN SECTION (1/3) — 3 7 6 3 1 5 1 5 0 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 — 19 —...

  • Page 14: Schematic Diagram - Main Section (3/3)

    STR-DE225/DE325 3-9. SCHEMATIC DIAGRAM — MAIN SECTION (2/3) — 3 7 6 3 1 5 1 5 0 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 — 21 —...
  • Page 15 STR-DE225/DE325 3-10. SCHEMATIC DIAGRAM — MAIN SECTION (3/3) — 3 7 6 3 1 5 1 5 0 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 — 23 —...

  • Page 16: Ic Pin Function Description

    http://www.xiaoyu163.com 3-11. IC PIN FUNCTION DESCPIRTION 3 7 63 1515 0 • IC201 µPD78044FGF-112-3B9 Pin No. Pin Name Description DIG7 DIG6 DIG5 DIG4 Fluorescent indicator tube drive. DIG3 DIG2 DIG1 — Power supply (+5V). S. CLK System clock. S. DATA System data.
  • Page 17 http://www.xiaoyu163.com 3 7 63 1515 0 Pin No. Pin Name Description VOLUME UP Volume up. VOLUME DOWN Volume down. STANDBY Standby LED drive. SYS. POWER System power ON/OFF. RDS. DATA. IN RDS data input. RDS. CLK. IN RDS clock input. STOP Stop signal input from NJM2103D (IC950).

  • Page 18: Ic Block Diagrams

    http://www.xiaoyu163.com 3 7 63 1515 0 3-12. IC BLOCK DIAGRAMS • IC BLOCK DIAGRAMS BU1922 TEST LOGIC AND OUTPUT SELECTOR SWITCH 57kHz ANTI- OSCILLATOR QUALITY BIT RECONSTRUCTION BANDPASS ALIASING GENERATOR FILTER (8th ORDER) DIVIDER FILTER BIPHASE CONTAS LOOP DEFFERENTIAL CLOCKED SYMBOL VARIABLE AND DECODER...
  • Page 19 http://www.xiaoyu163.com 3 7 63 1515 0 IC202 BA6208 MOTOR SWITCH DRIVE MOTOR SWITCH DRIVE IC950 NJM2103D RESET – + VREF + – L 13942296513 OUTC VSB/SESIN – – u163 — 28 — http://www.xiaoyu163.com...

  • Page 20: Exploded Views

    A-4407-515-A DISPLAY BOARD, COMPLETE (DE325:AUS) (EXCEPT US,CND) A-4407-518-A DISPLAY BOARD, COMPLETE (DE325:E,EA,CH) 4-977-358-11 CUSHION A-4407-521-A DISPLAY BOARD, COMPLETE (DE325:AEP,G,EE) 4-951-620-01 SCREW (2.6 × 8), +BVTP 4-996-698-01 EMBLEM, SONY 4-998-189-01 BUTTON (P-T) * 11 A-4407-436-A VR-TONE BOARD, COMPLETE X-4949-628-1 FRONT PANEL ASSY (DE325:US,CND) (DE225:CND/DE325:EXCEPT AEP,G,EE)

  • Page 21: Chassis Section

    http://www.xiaoyu163.com 3 7 63 1515 0 4-2. CHASSIS SECTION US,CND MODEL AUS MODEL UK MODEL EXCEPT US, CND, AUS MODEL E, EA, CH MODEL CNJ902 Transistor T901 not supplied not supplied L 13942296513 not supplied Ref. No. Part No. Description Remarks Ref.

  • Page 22: Electrical Parts List

    http://www.xiaoyu163.com SECTION 5 DISPLAY ELECTRICAL PARTS LIST 3 7 63 1515 0 NOTE: • -XX, -X mean standardized parts, so they may • COILS When indicating parts by reference number, have some difference from the original one. uH: µH please include the board name. •...
  • Page 23 http://www.xiaoyu163.com DISPLAY MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R270 1-247-807-31 CARBON 1/4W < SWITCH > R280 1-249-419-11 CARBON 1.5K 1/4W F (DE325:AEP,G,EE) S200 1-762-751-11 SWITCH, TACTILE (POEWR) R281 1-249-421-11 CARBON 2.2K 1/4W F...
  • Page 24 http://www.xiaoyu163.com MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks 1-126-960-11 ELECT C402 1-126-962-11 ELECT 3.3uF (DE225:AEP,G,EE,UK/DE325:AEP,G,EE) (DE325:AEP,G,EE) C302 1-126-934-11 ELECT 220uF C403 1-126-966-11 ELECT 33uF C303 1-130-494-11 MYLAR 0.082uF (DE325:AEP,G,EE) C304 1-137-367-11 FILM 0.0033uF 5%...
  • Page 25 http://www.xiaoyu163.com MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks C740 1-128-560-11 ELECT 22uF 100V CC02 1-162-282-31 CERAMIC 100PF C741 1-128-560-11 ELECT 22uF 100V (DE225:AEP,G,EE,UK/DE325:AEP,G,EE) C742 1-126-925-11 ELECT 470uF CC03 1-162-282-31 CERAMIC 100PF C743 1-126-925-11 ELECT...
  • Page 26 http://www.xiaoyu163.com MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks D815 8-719-911-19 DIODE 1SS119 Q701 8-729-119-76 TRANSISTOR 2SA1175-HFE D817 8-719-936-61 DIODE GL-9HY35 Q702 8-729-141-30 TRANSISTOR 2SC3623A-LK D818 8-719-911-19 DIODE 1SS119 Q703 8-749-010-25 IC MN2488-OPY-M D820 8-719-200-82 DIODE 11ES2...
  • Page 27 http://www.xiaoyu163.com MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R361 1-249-429-11 CARBON 1/4W R602 1-249-439-11 CARBON 1/4W R362 1-249-429-11 CARBON 1/4W R603 1-249-416-11 CARBON 1/4W F R363 1-249-411-11 CARBON 1/4W (DE225:AEP,G,EE,UK) R401 1-249-411-11 CARBON...
  • Page 28 http://www.xiaoyu163.com MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks ! R664 1-249-409-11 CARBON 1/4W F R734 1-249-429-11 CARBON 1/4W (DE225:AEP,G,EE,UK/DE325:AEP,G,EE) ! R740 1-249-393-11 CARBON 1/4W F ! R664 1-249-408-11 CARBON 1/4W F ! R741 1-249-393-11 CARBON...
  • Page 29 http://www.xiaoyu163.com MAIN MIX-OUT PRIMARY SECONDARY SP-SW 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R825 1-249-407-11 CARBON 1/4W F 1-669-267-11 PRIMARY BOARD ! R830 1-249-405-11 CARBON 1/4W F ************* (DE225:AEP,G,EE,UK/DE325:EXCEPT CND) ! R830 1-249-402-11 CARBON 1/4W F...
  • Page 30 http://www.xiaoyu163.com SP-SW SP-SW-A SP-SW-B STAND BY VOL-SEL VR-TONE 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < SWITCH > < CONNECTOR > S701 1-762-319-11 SWITCH, PUSH (2 KEY)(SPEAKER A/B) * CNP907 1-565-395-11 PIN, CONNECTOR 3P CNP908 1-564-321-00 PIN, CONNECTOR 2P ************************************************************ * CNP910 1-564-687-11 PIN, CONNECTOR 3P...
  • Page 31 http://www.xiaoyu163.com VR-TONE 10 KEY 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < CONNECTOR > < VARIABLE RESISTOR > CNP202 1-770-391-11 PIN, CONNECTOR (PC BOARD) 7P RV404 1-225-229-11 RES, VAR, CARBON 100KX4 CNS402 1-568-439-11 SOCKET, CONNECTOR 7P (MASTER VOLUME) CNS403 1-568-442-11 SOCKET, CONNECTOR 9P...
  • Page 32 http://www.xiaoyu163.com 10 KEY 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks S232 1-554-303-21 SWITCH, TACTILE (DIRECT TUNING) ACCESSORIES & PACKING MATERIALS S233 1-554-303-21 SWITCH, TACTILE (1) ******************************* S234 1-554-303-21 SWITCH, TACTILE (2) S235 1-554-303-21 SWITCH, TACTILE (3) 1-475-042-11 ADAPTOR...
  • Page 33 STR-DE225/DE325 3 7 63 1515 0 L 13942296513 u163 Sony Corporation 98C1690-1 Printed in Japan © 1998.3 Home A&V Products Company 9-922-812-11 Published by General Engineering Dept. — 42 — (Shibaura) http://www.xiaoyu163.com...

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