Alpine-CDM-7871RM-7872RB-7874RB-Service-Manual 电路图 维修手册.pdf

LPINE SERVICE ALPl-00725 UAL FM/AM Compact Disc Receiver II0.,.,.4,._. CDlll:caWlt CIIU-7178 :oi- lfi .,;:;,-; (CDM-787 4RB) Qoi DIGITAL AUDIO CDM-7B74RB/CDM-7B72RB/ CDM-7B71 R/CDM-7B71 RM/ CDE-7B60R The following cautions will prevent accidents in the workplace and will ensure safe products. eThe symbols indicate caution is needed to prevent injuries and damage to property. The symbols and their meanings follow. Warning If you ignore this symbol and handle the product incorrectly or unsafely, serious injury or death may result. Caution If you ignore this symbol and handle the product incorrectly or unsafely, injury or only material damage may result. eThe followine: svmbols indicate two levels of cautions. When you see this symbol, you have to be very careful. 0 When you see this symbol, you have to follow the instructions there. A Warning Do not look squarely into the laser light coming from the pickup. You may loose you sie:ht. A Caution Do not allow wiring to be caught in the screw/ chassis. If wiring is caught in the screw/chassis, it may cause a short circuit, resulting in a fire. High Temperature Caution Touching the heat sink may cause severe bums. Reverse Power Supply Connections or Misconnections Caution Reverse power supply connections or misconnections mav cause ie:nition problems and smoke may result. Soldering Caution Hot solder from solder splash may cause severe burns. 0 0 0 0 0 -2- Fuse Caution Always use a designated fuse. Use of an incorrect fuse may result in a fire. Battery Caution Use the designated battery. Confirm the correct polarity and seat of the battery. An incorrect battery or an improperly connected or seated batterv mav result in a fire. Designated Parts Caution Look up the part list and ensure that only designated parts are used to prevent problems or accidents. Wiring Caution Ensure that the wiring is correct when rewiring to prevent problems with ignition/breakdown. Wear Gloves Wear gloves to prevent electrical shocks or injury from the end face of the metal. CDM-7874RB/CDM-7872RB/CDM-7871 R CDM-7871 RM/CDE-7860R Contents Packing Assembly Parts List . . . . . . . . . . . 4 Packing Method View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Specifications . . . . . . . . . . . . . 5, 6 Adjustment Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7, 8 Extension Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 Parts Layout on P.W.Boards and Wiring Diagram . 11-20 Schematic Diagram . _. 21-36 Terminal Voltage of IC/TR . 27-32 Description of IC Terminal . 33-35 Electrical Parts List . 36-43 Cabinet Assembly Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Exploded View (Cabinet) . 45, 46 Exploded View (CD Deck Mechanism) (DP23S2A0) . 47, 48 CD Deck Mechanism Assembly Parts List . . . . . . . . . . . . . . . 49 NOTE : Due to continuing product improvement, specifications and designs are subject to change without notice. -3- CDM-7874RB/CDM-7872RB/CDM-7871 R CDM-7871 RM/CDE-7860R Packing Assembly Parts List Symbol Part No. Description Symbol No. No. 101-1 03S72235F13 SCR,MCH M5X8 FLAT 0 104 101-2 01T15394Y02 ANT.JASO-ISO 104 101-3 36A11113W01 CAP,RUBBER(A) b. 104 101-4 03A11112W01 BOL T,HEX.MS(A) . 104 102 15D00529K02 CASE.INNER 104 103 15D01798K01 CARRYING.CASE 105 Part No. Description 01T15359Y10 ASSY,WIRE PWR 7874R 01T15359Y10 ASSY,WIRE PWR 7874R 01T15359Y11 ASSY,WIRE PWR 7871R 01T15359Y11 ASSY,WIRE PWR 7871R 01T15359Y 11 ASSY,WIRE PWR 7871 R 68P01434K85 O/M AOEU AODN NOTE: 0: For CDM-7874RB Model Only, e: For CDM-7872RB Model Only, L:,.: For CDM-7871 R Model Only, : For CDM-7871 RM Model Only, 0: For CDE-7860R Model Only, Others: Common. Packing Method View -4- 8-1 8-2 X4 1 8-3 c=Jx1 Specifications CDM-787 4RB/CDM-7872RB/CDM-7871 R CDM-7872RM/CDE-7860R Intermediate Frequency . 10.70.1 MHz Frequency Range . 87.5-108MHz Usable Sensitivity (Mono, 30d8 S/N, at 98.1 MHz) . 20.2dBf -3d8 Limiting Sensitivity (at 98.1 MHz) . 20.2dBf Residual Noise (Ref. 400Hz (WID), at 98.1MHz) . 2510dB S/N Ratio (at 98.1 MHz) . Stereo : 50dB Mono: 55dB Image Rejection (at 106.1 MHz) . 40dB IF Rejection (at 90.1 MHz) . 60dB Distortion (Input 60d8, at 98.1 MHz) . 1 % Frequency Response (Ref. 400Hz, at 98.1 MHz) . 1 OOHz: 03dB 10kHz: -123dB Stereo Separation (1 kHz, at 98.1 MHz) . 20dB 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 603kHz) . 40dB IF Rejection (at 603kHz) . 50dB Distortion (at 999kHz) . . 1.5% Frequency Response (Ref. 400Hz, at 999kHz) . 100Hz :-3:4dB Intermediate Frequency 4kHz : -12-+4, -8dB 1st. : 10.7MHz 2nd. :450kHz Frequency Range . 153-28 1 kHz Usable Sensitivity (20d8 S/N, at 216kHz) . :38dB S/N Ratio (at 216kHz) . 45dB Image Rejection (at 270kHz) . 40d_B IF Rejection (at 162kHz) . !:iOdB Distortion (at 216kHz) 1.5% Frequency Response (Ref. 400Hz, at 216kHz) . 100Hz :-3:4dB 4kHz : -12,4, -8d8 -5- CDM-7874RB/CDM-7872RB/CDM-7871 R CDM-7872RM/CDE-7860R System . Optical (Compact Disc System) Quantizing Bit Number . -. 16bit Linear system Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Channels Channel Balance (1kHz, TCD-782) . 03dB Distortion (1 kHz, TVD-782) . 0.1 % Frequency Response (Ref. 1 kHz, TCD-782) . 17Hz : 03dB 127Hz : 02dB 10.007kHz : 02dB 19.997kHz: 04dB S/N Ratio TCD-782) . . . . . . . . . . . . . . . . . . . . . . . . . . 95dB Separation (1kHz, TCD-782) . 55dB De-Emphasis (Ref. 1 kHz, TCD-782) . 4kHz : -203dB 16kHz : -203dB Wave Length . . . . . . . . . . . . . . . . . . . . . 795nm Laser Power CLASS I Power Supply . DC14.4V Power Output (Ref. FM Mode/SP-OUT, T.H.D. 10%) /Impedance . 16W/ch/4ohm Pre Output (TCD-782 (0dB, 1kHz), T.H.D. 1%, SUB-W OFF Mode: Rear Pre-Out Mode) /Impedance . 2V2.5dBV/ch/1Dkohm SUB-W Output (TCD-782 (0dB, 1kHz), T.H.D. 1%, SUB-W STEP+15) /Impedance . 4V2.5dBV/ch/10kohm (0) Dimensions (WXHXD) . Chassis: 178X50X158mm Nose: 188X58X24.4mm (0) Nose: 188X58X20.6mm (e.t.A.0) Weight . . . . . . . . . . . . . . . . . . . . . . . . . . 1 .5kg NOTES : Due to Continuing product improvement, specifications and designs are subject to change without nolce. 0: For CDM-7874RB Model Only, e: For CDM-7872RB Model Only, b.: For CDM-7871R Model Only, A: For CDM-7871 RM Model Only,: For CDE-7860R Model Only, Others: Common. -6- CDM-787 4RB/CDM-7872RB/CDM-7871 R CDM-7871 RM/CDE-7860R Adjustment Procedures 1. FM/AM SECTION (1) Dummy Antenna Circuit (2) Connections 0 0 FM Signal Generator 0 0 AM Signal Generator (3) Control Settings : 1 Dohm 45ohm : I I I_ -J For 50 ohm FM Signal Generator Figure 1 : 30ohm 15pF : I I 0-Wv-41 10 Input 65pF , Output 6 Io I I ,_ -J For 50 ohm AM Signal Generator Antenna Receptacle FM Dummy Antenna Figure 2 ACVTVM TP001 1- TP608 0 GND 1-1-1-0 Unit Under Test * . Figure 3 Antenna Receptacle AM Dummy Antenna GND short for 0.5 sec. ACVTVM TP001 1- TP608 0 GND 1-1-1-0 Unit Under Test * GND short for 0.5 sec. Figure 4 Power Switch . . . . ON Band Switch . FM/AM (MW/LW) Fader Control . Center Position LOUD/SUB-W . OFF Balance Control . . . . Center Position Others . OFF -7- CDM-787 4RB/CDM-7872RB/CDM-7871 R CDM-7871 RM/CDE-7860R (4) Adjustment Procedures Step Description Connection Signal Generator Dial Control FM Seek Stop 87.5MHz, 26dB 1 Auto Figure 3 87.5MHz Adjustment (Mod. OFF) MM Seek Stop 999kHz, 34dB 2 Auto Figure 4 (Mod.OFF) 999kHz Adjustment LM Seek Stop 216kHz,34dB 3 Auto Figure4 (Mod.OFF) 216kHz Adjustment -8- Test Point/ P.W.Board Adjustment Coordinates TP001 Auto Adjustment : (1-C) After setting up of Signal Genarator, short GND and TP608 (Pull-Down) TP608 for 1 seconds. (4-B) (SPEC) 1.50.1V TP001 Auto Adjustment : (1-C) After setting up of Signal Genarator, TP608 short GND and TP608 (Pull-Down) for 1 seconds. (4-B) (SPEC) 1.00.1V TP001 Auto Adjustment : (1-C) After setting up of Signal Genarator, TP608 short GND and TP608 (Pull-Down) for 1 seconds. (4-B) (SPEC) 1.00.1V Extension Cable CDM-7874RB/CDM-7872RB/CDM-7871 R CDM-7871 RM/CDE-7860R When repairing or measuring the voltage of this unit, co