Alpine-CDA-7990-R-Service-Manual 电路图 维修手册.pdf

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1、LPINE SERVICE MANUAL Tuner / CD Player The model is component system unit of CD Unit and DC/DC CONVERTER Unit. - MY DC/DC CONVERTER :l:16V High Voltage Pre Outputs TIJNER/CO PAViR coA-7990R O FUNC Qom DIGITAL AUDIO CDA-7990R CDA-7990R Contents Packing Assembly Parts List . . . . . . . . . . . . . .

2、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Packing Method View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、 . . . . . . . . . . . . . . . . . . . . . . . 4, 5 Extension Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Adju

5、stment Procedures . ,. 7-9 Adjustment Locations . . . . . . . . . . 9 Block Diagram . . . . . . . . . . . . . . . . 1 O, 11 e CD Unit Parts Layout on P.W.Boards and Wiring Diagram 13-26 Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6、. . . . . . . . . . . . . . . . . . . . . . . . . . . 27 -43 Terminal Voltage of IC/TR . 44-54 Description of IC Terminal . 55-62 Electrical Parts List . . . . . . . . . . . . 63-77 Exploded View (Cabinet) . . . . . . . . 78, 79 Cabinet Assembly Parts List . . . . . . . . . . . . 80 CD Deck Mechanis

7、m Assembly Parts List . 81 Exploded View (CD Deck Mechanism) (DP26T010) . 82, 83 e DC/DC CONVERTER Unit Parts Layout on P.W.Board and Wiring Diagram 85,86 Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87, 88 Terminal Voltage of IC/TR . 89 Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9、 . . . . . . . . . . . . . . . 90 Cabinet Assembly Parts List . . . . . 91 Exploded View (Cabinet) . . . . . . . 92 NOTE : Due to continuing product improvement, specifications and designs are subject to change without notice; -2- CDA-7990R Packing Assembly Parts List Symbol Part No. Description Sym

10、bol Part No. Description No. No. 101-1 03S72235F68 SCR,MCH M5X6 F CU 103 15B40489Y01 CARRYING.CASE 101-2 36A11113W01 CAP,RUBBER(A) 104 01T45096Y01 ASSY,WIRE PWR 101-3 03A 11112W02 SOLT HEX M5A) 105 68P30540Y84 0/MAOEU 101-4 01 T1 5394Y02 ANT.JASO-ISO 102 15D80814F01 CASE,INNER Packing Method View -3

11、- CDA-7990R Specifications Intermediate Frequency . 10. 7 0.1 MHz Frequency Range . 87.5108MHz Usable Sensitivity (Mono, 30dB S/N, at 98.1 MHz) . . . . . . . . . . . . . . . . . . . . . . . . . 17 .2dBf -3dB Limiting Sensitivity (at 98.1 MHz) . 21.2dBf Residual Noise (Ref. 400Hz (narrow), at 98.1 MH

12、z) . 25 1 0dB S/N Ratio (at 98.1 MHz) . Mono : 60dB Stereo : 55dB Image Rejection (at 106.1MHz) . 40dB IF Rejection (at 90.1 MHz) . 60dB Distortion (Input 60dB, at 98.1 MHz) . 1 % Frequency Response (Ref. 400Hz, at 98.1 MHz) . 1 00Hz : 03dB 10kHz: -123dB Stereo Separation (1 kHz, at 98.1 MHz) . 20dB

13、 PS Sensitivity (at 98.1 MHz) . 36.2dBf Intermediate Frequency 1st: 10.7MHz 2nd: 450kHz Frequency Range . 531 1,602kHz Usable Sensitivity (20dB S/N, at 999kHz) . 34dB S/N Ratio (at 999kHz) . 44dB Image Rejection (at 1,404kHz) . 50dB IF Rejection (at 603kHz) . 60dB Distortion (at 999kHz) . 1.5% Frequ

14、ency Response (Ref. 400Hz, at 999kHz) . 1 00Hz : -34dB Intermediate Frequency 4kHz: -11 +6, -12dB 1st: 10.7MHz 2nd: 450kHz Frequency Range . 153281 kHz Usable Sensitivity (20dB S/N, at 216kHz) . 42dB S/N Ratio (at 216kHz) . 44dB Image Rejection (at 270kHz) . 50dB IF Rejection (at 162kHz) . 60dB Dist

15、ortion (at 216kHz) . 1.5% Frequency Response (Ref. 400Hz, at 216kHz) . 1 00Hz : -34dB 4kHz: -11+6, -12dB -4- System CDA-7990R Optical (Compact Disc System) Quantizing Bit Number . 16bit Linear system Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

16、 . . . . . . . . . 2 Channels Channel Balance (TCD-782, 1kHz) . 03d8 Distortion TCD-782, 1 kHz) . 0.01 % Frequency Response (TCD-782, Ref. 1 kHz) . 17Hz : 03d8 127Hz : 02d8 10.007kHz : 02d8 19.997kHz: 04d8 S/N Ratio TCD-782) . 95d8 Separation (TCD-782, 1 kHz) . . 85d8 De-Emphasis (TCD-782, Ref. 1kHz

17、) . 4kHz: -203d8 16kHz : -203d8 Power Supply . DC14.4V Pre Output (VOL. MAX, TCD-782 (0dB, 1kHz) /Impedance . 131d8V/10k ohm Dimensions (WXHXD) . (CD Unit) Chassis: 178X50X166.5mm Nose : 188X58X30.8mm (DC/DC CONVERTER Unit) 180X44X124mm Weight . (CD Unit) 1.5kg (DC/DC CONVERTER Unit) 1,060g NOTES :

18、Due to Continuing product improvement, specifications and designs are subject to change without notice. -5- CDA-7990R Extension Cable When repairing or measuring the voltage of this unit, connect with the Extension Cable as shown in below. CD Deck Mechanism Extension Cable (01 E31653S01) Main P.W.Bo

19、ard -6- CDA-7990R Adjustment Procedures 1. FM/MW/LW SECTION (1) Dummy Antenna Circuit (2) Connections 0 0 + FM Signal Generator 0 0 FM Signal Generator FM Stereo Modulator ,- 10ohm 45ohm : I I _ ) For 50 ohm FM Signal Generator Figure 1 ,- 30ohm 15pF , c;-1VVH I l 6 Input 65 F I p IQUtpUt 6 I ,r-o I

20、 I _ J For 5o ohm MW/LW Signal Generator Figure 2 DC Volt Meter TP008 1- FM Dummy Antenna 0 0 -+-I-, 0 l.:=T=P007g-.J., Unit Under Test - Antenna Receptacle Figure 3 DC Volt Meter FM Dummy Antenna FM Signal Generator FM Dummy Antenna Antenna Receptacle TP005,1t- 0 0 TP503 0 L=GND:!.J-t-1.r o Unit Un

21、der Test - 0 :., * Pull-Down Figure 4 ACVTVM Audio Output e GND 0 Unit Under Test Antenna Receptacle Figure 5 DC Volt Meter MW/LWDummy Antenna TP005 t- TP503 o + 0 L=GND-+-o 0 Unit Under Test ._ _ .:Jo * Pull-Down Figure 6 CDA-7990R (3) Control Settings Power Switch FADER/BALANCE Control ON ELECTRIC

22、AL CENTER Position TREBLE/BASS Control . ELECTRICAL CENTER Position Others . OFF (4) Adjustment Procedures Test Point/ Step Description Connection Signal Generator Dial Control PW.Board Coordinates TP007 1 IF Figure 3 98.1 MHz, 72dB 98.1MHz (1-D) Adjustment (Mod. OFF) TP008 (1-C) TP00S 98.1 MHz, 51d

23、B (1-D) (1) (Mod. OFF) 98.1MHz TP503 (1-C) Signal Meter 2 Adjustment Figure 4 (FM) 98.1MHz, TPOOS (2) 48-46dB 98.1MHz (1-D) TP503 (Mod. OFF) (1-C) TP00S (3) 98.1 MHz, 51 dB 98.1MHz (1-D) (Mod. OFF) TP503 (1-C) 98.1 MHz, 72dB (1) (Stereo, 1 kHz, 98.1MHz Audio Output Separation Leh Only) 3 Adjustment

24、Figure 5 (FM) 98.1 MHz, 72dB (2) (Stereo, 1 kHz, 98.1MHz Audio Output Reh Only) TP00S 999kHz, 32dB (1-D) (1) (Mod. OFF) 999kHz TP503 (1-C) Signal Meter 4 Adjustment Figure 6 (MW) 999kHz, TP00S (2) 27-29dB 999kHz (1-D) (Mod. OFF) TP503 (1-C) TP005 (3) 999kHz, 32dB 999kHz (1-D) (Mod. OFF) TP503 (1-C)

25、-8- Adjustment Adjust 2:lto 030mV. Auto Adjustment : After setting up of Signal Generator, short GND and TP503 (Pull-Down). (SPEC) TP00S: 30.1V-+ OK (SPEC) TP00S: others 30.1V-+ NG NOTE : NG : Proceed same Auto Adjustment of step ( 1 ) under step (2). Proceed same Auto Adjustment of step (1) under s

26、tep (2). Proceed same Auto Adjustment of step (1) under step (3). Adjust VR201 for Reh output to be minimum and confirm Leh and Reh output level difference maximum. Proceed same adjustment under step (1) by alternating Leh and Reh. Auto Adjustment : After setting up of Signal Generator, short GND an

27、d TP503 (Pull-Down). (SPEC) TP00S : 1.40.1V-+ OK (SPEC) TP00S: others 1.40.1V-+ NG NOTE : NG : Proceed same Auto Adjustment of step ( 1) under step (2). Proceed same Auto Adjustment of step (1) under step (2). Proceed same Auto Adjustment of step (1) under step (3). CDA-7990R Test Point/ Step Descri

28、ption Connection Signal Generator Dial Control P.W.Board Adjustment Coordinates Auto Adjustment : After setting up of Signal Generator, short GND and TP00S TP503 (Pull-Down). 216kHz, 32dB (1-0) (SPEC) TP00S: 1.4i-0.1V-+ OK (1) (Mod.OFF) 216kHz TP503 (SPEC) TP00S: others 1.4i-0.1V-+ NG (1-C) NOTE : N

29、G : Proceed same Auto Signal Meter Adjustment of step (1) 5 Adjustment Figure 6 under step (2). (LW) 216kHz, TP00S (2) 27-29dB 216kHz (1-D) Proceed same Auto Adjustment of step (Mod. OFF) TP503 (1) under step (2). (1-C) TP00S (3) 216kHz, 32dB 216kHz (1-0) Proceed same Auto Adjustment of step (Mod. OFF) TP503 (1) under step (3). (1-C) Adjustment Locations (Rear Side View) NOTE: For the Adjustment Parts and Test Points, refer to the Parts Layout on P.W.Boards and Wi