Aiwa-CDC-R237-Service-Manual 电路图 维修手册.pdf

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1、1 Ver 1.0 2003. 02 Model Name Using Similar MechanismNEW CD Drive Mechanism TypeMG-930B-185 Optical Pick-up NameOPTIMA-752B2 SERVICE MANUALAEP Model UK Model CDC-R237 RADIO SECTION (FM) Frequency Range: 87.5 MHz 108 MHz Intermediate frequency: 10.7 MHz Usable Sensitivity: 12.7 dBf 50 dB Quieting Sen

2、sitivity: 17.2 dBf IF Rejection: 100 dB Frequency Response: 30 Hz 15,000 Hz S/N Ratio: 67 dB Stereo Separation: 35 dB at 1 kHz Alternate Channel Selectivity: 98 dB Capture Ratio: 3 dB (MW) Frequency Range: 531 kHz 1,602 kHz Intermediate frequency: 10.71 MHz/450 kHz Usable Sensitivity: 30 V (30 dB) (

3、LW) Frequency Range: 144 kHz 288 kHz (1 kHz/9 kHz step) Intermediate frequency: 10.71 MHz/450 kHz Usable Sensitivity: 30 V (30 dB) SPECIFICATIONS CD SECTION Frequency Response: 17 Hz 20 kHz +0/3 dB Dynamic Range: More than 92 dB Channel Separation: More than 60 dB S/N Ratio: More than 92 dB Wow/Flut

4、ter: Unmeasurable AUDIO SECTION Max. Power Output: 45 W 4 channels AUX Input Input sensitivity (load impedance) AUX: 300 mV (10 k) The CD section have no adjustment. Sony Corporation e Vehicle Company Published by Sony Engineering Corporation 9-877-041-01 2003B0400-1 2003. 02 Continued on next page

5、FM/MW/LW COMPACT DISC PLAYER RadioFans.CN 收音机爱 好者资料库 2 CDC-R237 SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APP

6、EAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. GENERAL Power-Supply Voltage: 14.4 V (11 to 16 V allowable), DC, negative ground Load Impedance: 4 Tone Control: Bass 10 dB at 100 Hz, Treble 10 dB at 10 kHz Preamp Output Voltage (load impedance): 2.2 V (10 k) Installed size: 182 (W)

7、53 (H) 155 (D) mm Supplied Accessory: Carrying case (1) Specifications and external appearance are subject to change without notice due to product improvement. SERVICE NOTES NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT The laser diode in the optical pick-up block may suffer electrostatic

8、 breakdown because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic breakdown and also use the procedure in the printed matter which is included in the repair parts. The flexible board is easil

9、y damaged and should be handled with care. NOTES ON LASER DIODE EMISSION CHECK The laser beam on this model is concentrated so as to be focused on the disc reflective surface by the objective lens in the optical pick- up block. Therefore, when checking the laser diode emission, ob- serve from more t

10、han 30 cm away from the objective lens. Notes on Chip Component Replacement Never reuse a disconnected chip component. Notice that the minus side of a tantalum capacitor may be dam- aged by heat. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein ma

11、y result in hazardous radiation exposure. This compact disc player is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT label is located on the exterior. RadioFans.CN 收音机爱 好者资料库 3 TABLE OF CONTENTS 1. GENERAL Connections . 4 2. DISASSEMBLY 2-1. Sub Panel Assy . 7 2-2. CD Mechanism Blo

12、ck . 7 2-3. Main Board Section . 8 2-4. Main Board . 8 2-5. Heat Sink (CT) . 9 2-6. Sub Board. 9 2-7. Servo Board. 10 2-8. Floating Block Assy . 10 2-9. Lever Assy (CD Up Holder). 11 2-10. Lever (CD Roller) Sub Assy . 11 2-11. Lever Assy (CD Holder) . 12 2-12. Motor (Sled) Sub Assy . 12 2-13. Pick-u

13、p Sub Assy . 13 3. ELECTRICAL ADJUSTMENT. 14 4. DIAGRAMS 4-1. IC Pin Descriptions . 15 4-2. Block Diagram CD Section. 19 4-3. Block Diagram Main Section. 20 4-4. Block Diagram Front Section. 21 4-5. Circuit Boards Location . 21 4-6. Printed Wiring Boards CD Mechanism Section. 22 4-7. Schematic Diagr

14、am CD Mechanism Section. 24 4-8. Printed Wiring Board Main Section . 25 4-9. Schematic Diagram Main Section (1/2). 26 4-10. Schematic Diagram Main Section (2/2). 27 4-11. Printed Wiring Boards Front Section . 28 4-12. Schematic Diagram Front Section . 29 4-13. IC Block Diagrams. 30 5. EXPLODED VIEWS

15、 5-1. Chassis Section . 32 5-2. Front panel Section . 33 5-3. CD Mechanism Section (1). 34 5-4. CD Mechanism Section (2). 35 6. ELECTRICAL PARTS LIST. 36 CDC-R237 RadioFans.CN 收音机爱 好者资料库 4 CDC-R237 SECTION 1 GENERAL This section is extracted from instruction manual. 5 CDC-R237 6 CDC-R237 SECTION 2 D

16、ISASSEMBLY Note : This set can be disassemble according to the following sequence. 2-1.SUB PANEL ASSY (Page 7) 2-2.CD MECHANISM BLOCK (Page 7) 2-6.SUB BOARD (Page 9) 2-7.SERVO BOARD (Page 10) SET 2-13. PICK-UP SUB ASSY (Page 13) 2-4.MAIN BOARD (Page 8) 2-5.HEAT SINK (CT) (Page 9) 2-3.MAIN BOARD SECT

17、ION (Page 8) 2-8.FLOATING BLOCK ASSY (Page 10) 2-9.LEVER ASSY (CD UP HOLDER) (Page 11) 2-10. LEVER (CD ROLLER) SUB SSY (Page 11) 2-11. LEVER ASSY (CD HOLDER) (Page 12) 2-12. MOTOR (SLED) SUB ASSY (Page 12) 7 CDC-R237 2-2. CD MECHANISM BLOCK Note : Follow the disassembly procedure in the numerical or

18、der given. 2-1. SUB PANEL ASSY 4 sub panel assy 3 claws 2 claws 1 B 2.6x6 3 CON701 6 CD mechanism block 5 holder (CD mecha) 1 PTT 2.6x6 2 PTT 2.6x6 4 P 2.6x4 8 CDC-R237 2-4. MAIN BOARD 2-3. MAIN BOARD SECTION 2 cover 3 insulation sheet 4 Removal the solder. 7 MAIN board section 5 Removal the solder.

19、 6 Removal the solder. 1 PTP 2.6x4 0 MAIN board 1 PTT 2.6x6 4 PTT 2.6x6 6 side chassis (L) 8 side chassis (R) 9 front chassis 5 PTT 2.6x6 3 PTT 2.6x6 7 PTT 2.6x6 2 PTT 2.6x6 9 CDC-R237 2-5. HEAT SINK (CT) 2-6. SUB BOARD 4 heat sink (CT) 1 screw (2.6x8) 2 P 3x12 3 PTT 2.6x8 3 SUB board 1 Removal the

20、solders. 2 P 1.4x2 orange yellow green 10 CDC-R237 2-8. FLOATING BLOCK ASSY 2-7. SERVO BOARD 2 PTT 2x3 3 screws (M1.7x5) 4 SERVO board 5 PIC2 FLEXIBLE board 1 Removal the solders. red brawn orange blue black red yellow green 1 tension spring 2 tension spring 3 tension spring qd floating block aasy 4

21、 tension spring 5 tension spring 6 claw 7 claw 8 claw qa oil damper qs oil damper 9 0 11 CDC-R237 2-9. LEVER ASSY (CD UP HOLDER) 2-10. LEVER (CD ROLLER) SUB ASSY 1 P 1.4x2 3 special screw 4 tension spring 5 lever assy (CD up holder) 2 leaf spring (roller) 3 lever (CD roller) sub assy 1 2 12 CDC-R237

22、 2-11. LEVER ASSY (CD HOLDER) 2-12. MOTOR (SLED) SUB ASSY 2 special screw 1 torsion spring 4 lever assy (CD holder) 3 1 P 1.7x2 2 motor (sled) sub assy 13 CDC-R237 2-13. PICK-UP SUB ASSY 1 B 1.4x5 2 leaf spring 3 pick-up sub assy 14 CDC-R237 RDS Adjustment Setting:98 MHz 31 dBV (EMF) 1 kHz (Modulati

23、on Frequency) 45 kHz DEV Check point: S.METER test point Adjustment location: SFR101 Specification: 2.00.1 V Procedure: Set to FM98.0 MHz and adjust SFR101 so that the test point is 2.00.2 V. Adjustment Location: SECTION 3 ELECTRICAL ADJUSTMENT IC401 TU101 MAIN BOARD (CONDUCTOR SIDE) IC901 IC151 CON

24、702 TP16 S.METER SFR101 RDS Adjustment 15 CDC-R237 4-1. IC PIN DESCRIPTIONS IC241 TC94A09F-303 (DIGITAL SIGNAL SERVO PROCESSOR) (SERVO BOARD) Pin No.Pin NameI/OPin Description 1 9S1 9 (OT5 13)OLCD segment signal output/Output port Not used. (Open) 10S10 (OT14/ZDET)OLCD segment signal output/Output p

25、ort/CD signal Not used. (Open) 11S11 (OT15/CLCK)OLCD segment signal output/Output port/CD signal Not used. (Open) 12S12 (OT16/DATA)OLCD segment signal output/Output port/CD signal Not used. (Open) 13S13 (OT17/SFSY)OLCD segment signal output/Output port/CD signal Not used. (Open) 14S14 (DT18/LRCK)OLC

26、D segment signal output/Output port/CD signal Not used. (Open) 15P8-0 (S15/BCK)I/OI/O port/LCD segment signal output/CD signal Not used. (Open) 16P8-1 (S16/AOUT)I/OI/O port/LCD segment signal output/CD signal Not used. (Open) 17P8-2 (S17/MBOV)I/OI/O port/LCD segment signal output/CD signal Not used.

27、 (Open) 18P8-3 (S18/IPF)I/OI/O port/LCD segment signal output/CD signal Not used. (Open) 19MVDD1Power supply pin (+5 V) 20MVSSGround pin 21LMT SWILimit switch signal input 22P1-1 (K1)IKey signal input 23P1-2 (K2)IKey signal input 24SW3IKey signal input 25SRQICDS SRQ signal input 26LM CONTOLoading mo

28、tor speed control signal output 27P3-2 (ADIN2)I/OI/O port/AD analog voltage signal input Not used. (Open) 28P3-3 (ADIN3)OMute signal output 29P4-0 (BUZR/AD4)I/OI/O port/AD analog voltage signal input/buzzer signal output Not used. (Open) 30DATA INICDS serial data signal input 31DATA OUTOCDS serial d

29、ata signal output 32CLOCKI/OCDS serial clock signal input/output 33P2-0/EMPHI/OEmphasis signal input/output 34P2-1/HSOI/OI/O port/1 bit DAC input Not used. (Open) 35P2-2/LRCKI/OI/O port/1 bit DAC input Not used. (Open) 36P2-3/DATAI/OI/O port/1 bit DAC input Not used. (Open) 37IN1/BCKIInput port/1 bi

30、t DAC input Connect to ground. 38TESTCITest mode control input Not used. (Open) 39DT19 (/HSO)OOutput port/CD control signal output Not used. (Open) 40DT20 (SPCK)OOutput port/CD control signal output Not used. (Open) 41DT21 (SPDA)OOutput port/CD control signal output Not used. (Open) 42DT22 (COFS)OOu

31、tput port/CD control signal output Not used. (Open) 43DOUTODigital out signal output Not used. (Open) 44SBSYOSub code block sync signal output Not used. (Open) 45SBOKOSub code Q data signal output Not used. (Open) 46VDD1Power supply pin (+5 V) 47VSS1Ground pin 48P2VREFPLL 2 voltage reference pin 49P

32、DOIEFM/PLCK signal difference error signal input 50TMAXITMAX detect signal input 51LPFNIInversion signal input of amplifier for lowpass filter 52LPFOOSignal output of amplifier for lowpass filter 53PVREFIPLL voltage reference input 54VCOFOVCO filter signal output 55AVSSGround pin 56SLCOODAC signal o

33、utput 57RFIIRF signal input 58AVDDPower supply pin 59RFCTIRFRP signal center level input SECTION 4 DIAGRAMS 16 CDC-R237 Pin No.Pin NameI/OPin Description 60RFZIIRFRP zero-closs signal input 61RFRPIRFRP ripple signal input 62FEIIFocus error signal input 63SBADISub beam addition signal input 64TEIITra

34、cking error signal input 65TEZIITracking error zero-closs signal input 66FOOOFocus equalizer signal output 67TROOTracking equalizer signal output 68VREFAnalog reference power supply pin 69RFGCORF amplitude adjustment control signal output 70TEBCOTracking balance control signal output 71FMOOFocus equ

35、alizer signal output 72DMOODisc equalizer signal output 732VREFAnalog reference power supply pin 74SELOAPC circuit on/off signal output 75VDD2Power supply pin (+5 V) 76, 77VSS2, XVSSGround pin 78XIICrystal oscillator input for CD 79XOOCrystal oscillator output for CD 80XVDDPower supply pin (+5 V) 81

36、DVSRGround pin 82ROOR channel data clock wise signal output 83DVRRR channel reference voltage pin 84DVDDPower supply pin 85DVRLL channel reference voltage pin 86LOOL channel data clock wise signal output 87DVSLGround pin 88TESTMIGround pin 89IN2/(VPP)IGround pin 90RESETISystem reset signal input 91/

37、HOLDIHold mode control signal input 92CSIExternal interruption signal input 93MXOONot used. (Open) 94MXIIGround pin 95MVSS2Ground pin 96MVDD2Power supply pin (+5 V) 97 100COM1 4 (OT1 4)ONot used. (Open) 17 CDC-R237 IC901 PD178078GF-589-3BA (SYSTEM CONTROL) (MAIN BOARD) Pin No.Pin NameI/OPin Descript

38、ion 1BATT INIBattery signal input 2DFP INIFront panel with/without detect signal input 3LCD DIILCD serial data signal input 4LCD DOOLCD serial data signal output 5LCD CLOOLCD sync clock signal output 6LCD CEOLCD driver CE signal output 7BBE1ONot used. (Open) 8CDS DIICDS serial data signal input 9CDS

39、 DOOCDS serial data signal output 10CDS CLOOCDS sync clock signal output 11 15NCONot used. (Open) 16BBE2ONot used. (Open) 17NCONot used. (Open) 18EVOL CLOOClock signal output to electronic volume 19EVOL DOOSerial data signal output to electronic volume 20EVOL CEOCE signal output to electronic volume

40、 21LOC/DXOLOC/DX select signal output 22DSSA CONTODSSA control signal output “H”: DSSA L/R 23ACC DETECTORIPower supply overvoltage detect signal input 24PHONE MUTEIExternal mute control signal input 25LEVELINDILevel signal input 26TESTCDS test mode pin 27AVDDPower supply pin (+5 V) 28 30NCINot used.

41、 (Connect to ground.) 31FM/AM S METERIRDS AF signal input/FM/AM S meter signal input 32AVSSGround pin 33REGCPURegulator for CPU power supply 34VDDPower supply pin (+5 V) 35REGOSCRegulator for oscillator circuit 36, 37X2, X1System clock oscillator pin (6.3 MHz) 38GNDGround pin 39IF REQOIF count signa

42、l request output 40GNDGround pin 41AM IFIAM IF count signal input 42FM IFIFM IF count signal input 43VDD PLLPower supply pin for PLL (+5 V) 44FM OSCIFM local oscillator signal input 45AM OSCIAM local oscillator signal input 46GND PLLGround pin for PLL 47EO 0OError out signal output from charge pomp

43、48EO 1OError out signal output from charge pomp 49ICNot used. (Connect to ground.) 50RESETISystem reset signal input 51RDS CLK INIRDS clock signal input 52ACC INIACC on/off detect signal input 53NCINot used. 54ST IND/SD INIFM receive stereo signal input 55NCONot used. (Open) 56ST BY MUTEOST-BY mute

44、control signal output to power IC 57POWER CONTOPower control signal output 58RDS DIIRDS serial data signal input 59BEEPOBeep signal output 18 CDC-R237 Pin No.Pin NameI/OPin Description 60AF MUTEOAudio mute control signal output 61 63NCONot used. (Open) 64RDS MODEORDS mode signal output “H”: RDS AF 65POWER MUTEOMute control signal output to power IC 66FMOBand (FM) select signal output 67AMOBand (AM) select sig