sony_MDX-C8970R_service_manual 维修电路图.pdf
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1、SERVICE MANUAL MDX-C8970R SUPPLEMENT-1 File this supplement with the service manual. AEP Model UK Model Subject: Main/Display/Relay Boards Modification CONTENTS 1.DISCRIMINATION.2 2.DIAGRAMS 2-1.Note for Printed Wiring Boards and Schematic Diagrams .3 2-2.Schematic Diagram MAIN Board (1/5) .5 2-3.Sc
2、hematic Diagram MAIN Board (2/5) .6 2-4.Schematic Diagram MAIN Board (3/5) .7 2-5.Schematic Diagram MAIN Board (4/5) .8 2-6.Schematic Diagram MAIN Board (5/5) .9 2-7.Printed Wiring Board MAIN Board (Component Side) . 10 2-8.Printed Wiring Board MAIN Board (Conductor Side) . 11 2-9.Printed Wiring Boa
3、rd DISPLAY Board . 12 2-10. Schematic Diagram DISPLAY Board . 13 2-11. Printed Wiring Board RELAY Board . 14 2-12. Schematic Diagram RELAY Board . 15 3.ELECTRICAL PARTS LIST. 16 (ECN-CSB00896) 收音机爱好者资料库 Ra d i o Fa n s .CN 2 1.DISCRIMINATION Former :1-674-589-11 New:1-674-589-12 Former :1-674-590-11
4、 New:1-674-590-12 Former :1-674-591-11 New:1-674-591-12 MAIN BOARD (Component Side) RELAY BOARD (Component Side) DISPLAY BOARD (Conductor Side) 收音机爱好者资料库 Ra d i o Fa n s .CN 3 2.DIAGRAMS 2-1.NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS (In addition to this, the necessary note is printed in
5、each block) Caution: Pattern face side:Parts on the pattern face side seen from (Conductor Side)the pattern face are indicated. Parts face side:Parts on the parts face side seen from (Component Side)the parts face are indicated. Note on Printed Wiring Boards: X : parts extracted from the component s
6、ide. Y : parts extracted from the conductor side. f: internal component. b : Pattern from the side which enables seeing. (The other layers patterns are not indicated.) Note on Schematic Diagrams: All capacitors are in F unless otherwise noted. pF: F 50 WV or less are not indicated except for electro
7、lytics and tantalums. All resistors are in and 1/4 W or less unless otherwise specified. f: internal component. C : panel designation. U : B+ Line. H : adjustment for repair. Power voltage is dc 14.4V and fed with regulated dc power supply from ACC and BATT cords. Voltages are taken with a VOM (Inpu
8、t impedance 10 M). Voltage variations may be noted due to normal produc- tion tolerances. Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal produc- tion tolerances. Circled numbers refer to waveforms. Signal path. F: FM f: MW/LW E: MD Model Identification The des
9、tination is expressed with the model according to the language of Program Rom mounted in the set. How to identify the model is described below. POWER BOARD (Component Side) Note: The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number spe
10、cified. IC803 MSM534001E-49TSKFDR3 (TYPE C: ENGLISH, FRENCH) MSM534001E-50TSKFDR3 (TYPE A: ENGLISH, SPANISH) MSM534001E-51TSKFDR3 (TYPE B: ENGLISH, GERMAN) 收音机爱好者资料库 Ra d i o Fa n s .CN 4 55 MDX-C8970R 2-2.SCHEMATIC DIAGRAM MAIN Board (1/5) Note on Schematic Diagram: Voltages and waveforms are dc wi
11、th respect to ground under no-signal (detuned) conditions. no mark : FM (Page 9) (Page 7) (Page 8) (Page 6) 66 MDX-C8970R 2-3.SCHEMATIC DIAGRAM MAIN Board (2/5) Note on Schematic Diagram: Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : FM (Page 5)
12、 (Page 7) (Page 8) 77 MDX-C8970R 2-4.SCHEMATIC DIAGRAM MAIN Board (3/5) Note on Schematic Diagram: Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : FM () : MW : LW : MD PLAY (Page 5) (Page 9) (Page 9) (Page 8) (Page 6) 88 MDX-C8970R 2-5.SCHEMATIC D
13、IAGRAM MAIN Board (4/5) Note on Schematic Diagram: Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : FM : MD PLAY (Page 5) (Page 7) (Page 6) (Page 15) 99 MDX-C8970R 2-6.SCHEMATIC DIAGRAM MAIN Board (5/5) Note on Schematic Diagram: Voltages and wavef
14、orms are dc with respect to ground under no-signal (detuned) conditions. no mark : FM () : MW : LW : MD PLAY (Page 7) (Page 5) 1010 MDX-C8970R IC151E-3 IC271C-13 IC300H-6 IC404E-10 IC421E-12 IC500J-6 IC506H-5 IC602D-7 IC632D-6 IC691G-8 IC701H-12 IC702J-11 IC901J-3 IC951H-3 IC952I-3 Q130I-2 Q131I-2 Q
15、132I-2 Q133G-1 Q134I-2 Q180B-2 Q181B-2 Q182C-2 Q183C-2 Q185D-3 Q251J-9 Q252J-10 Q253I-9 Q254J-10 Q255J-9 Q256J-9 Q271C-13 Q272C-12 Q275B-13 Q421D-11 Q422D-11 Q423E-11 Q424E-11 Q441F-9 Q451D-10 Q461D-9 Q462E-10 Q471C-8 Q472D-8 Q473C-8 Q474D-8 Q501H-5 Q523J-8 Q691G-8 Q751F-2 Q752G-2 Q754F-2 D131J-2 D2
16、O4J-11 D251K-12 D252K-12 D253K-12 D254K-11 D255K-13 D256K-13 D257K-12 D258K-12 D259K-12 D260K-12 D261K-13 D262K-11 D263K-11 D264K-11 D265K-11 D271D-13 D279B-14 D280A-14 D282A-14 D283B-13 D291B-3 D421E-11 D422E-12 D423D-12 D424D-12 D441E-9 D442E-9 D461C-10 D462C-10 D463C-10 D464C-9 D466C-9 D467D-10 D
17、468D-9 D471C-8 D472D-8 D481B-7 D482B-7 D483B-6 D484B-6 D485B-7 D486B-8 D487B-8 D488B-8 D491B-6 D546K-3 D601B-5 D631B-4 D661A-1 D701H-11 2-7.PRINTED WIRING BOARD MAIN Board (Component Side) Ref. No.LocationRef. No.Location Semiconductor Location 1111 MDX-C8970R 2-8.PRINTED WIRING BOARD MAIN Board (Co
18、nductor Side) D181C-2 D272B-12 D273B-12 D274B-12 D275C-12 D276B-12 D277B-13 D278B-13 D403F-13 D431D-9 D432D-9 D477B-13 D489A-7 D527I-9 D555J-7 D702I-12 D751F-2 IC131J-2 IC351H-6 IC401E-9 IC402E-10 IC403D-10 IC481A-7 IC601F-7 Ref. No.LocationRef. No.Location Semiconductor Location IC603D-7 IC604C-6 I
19、C631F-6 IC633D-6 IC634C-4 IC661E-5 IC663B-2 IC752G-2 IC771F-3 Q273B-13 Q274B-13 Q401F-9 Q402F-12 Q403F-10 Q431D-8 Q504J-5 Q601B-5 Q602B-5 Q631B-4 Q632B-4 Q661B-2 Q662A-2 Q753F-2 Q901J-2 (Page 14) 1212 MDX-C8970R 2-9.PRINTED WIRING BOARD DISPLAY Board Semiconductor Location (Component Side) Ref. No.L
20、ocation Semiconductor Location (Conductor Side) IC910C-4 LED900C-4 LED901B-4 LED902A-3 LED903A-2 LED904C-2 LED905C-2 LED906B-2 LED907B-2 LED971A-5 LED972B-5 LED973C-12 LED974C-5 LED975A-12 LED976B-12 D901B-5 D902B-4 D903A-8 D905B-8 D971B-4 IC900B-6 IC920B-9 IC921B-8 Q900B-5 Q901B-5 Q902A-5 Q903B-5 Q
21、904B-4 Q971B-4 Q972B-4 Ref. No.Location (Page 14) 1313 MDX-C8970R 2-10.SCHEMATIC DIAGRAM DISPLAY Board Note on Schematic Diagram: Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : FM (Page 15) 1414 MDX-C8970R 2-11.PRINTED WIRING BOARD RELAY Board (P
22、age 11) (Page 12) 15 MDX-C8970R 2-12.SCHEMATIC DIAGRAM RELAY Board (Page 13) (Page 8) 16 DISPLAY Ref. No.Part No.DescriptionRemarkRef. No.Part No.DescriptionRemark NOTE: Due to standardization, replacements in the parts list may be different from the parts speci- fied in the diagrams or the componen
23、ts used on the set. -XX and -X mean standardized parts, so they may have some difference from the original one. RESISTORS All resistors are in ohms. METAL: Metal-film resistor. METAL OXIDE: Metal oxide-film resistor. F: nonflammable Items marked “*” are not stocked since they are seldom required for
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