Aiwa-CX-LFA500-Service-Manual 电路图 维修手册.pdf

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1、CX-LFA500 AEP Model UK Model E Model Australian Model SERVICE MANUAL MICRO HI-FI COMPONENT SYSTEM Sony Corporation Personal Audio Division Published by Sony Engineering Corporation 9-877-166-05 2005J16-1 2005.10 CX-LFA500 is the Amplifier, CD player, Tape Deck and Tuner section in XR-FA500. SPECIFIC

2、ATIONS Ver. 1.4 2005. 10 Model Name Using Similar MechanismNEW CD CD Mechanism TypeCDM55A-K6BD44B Section Base Unit NameBU-K1BD44B Optical Pick-up NameKSM-213D TAPE Model Name Using Similar MechanismNEW Section Tape Transport Mechanism TypeCMAL1Z222B TUNER FM tuning range87.5 MHz to 108 MHz (50 kHz

3、step) FM usable sensitivity (IHF)16.8 dBf FM antenna terminal75 ? (unbalanced) AM tuning range AM usable sensitivity350 V/m AM antennaLoop antenna AMPLIFIER Power outputRated: 16 W + 16 W(6 ohms, T.H.D. 1 %, 1 kHz/DIN 45500) Reference: 20 W + 20 W(6 ohms, T.H.D. 10 %, 1 kHz/DIN 45324) MUSIC POWER 40

4、 W + 40 W InputAUX IN: 500 mV OutputsSPEAKERS: 6 ohms or more PHONES: 32 ohms or more European model:531-1,602 kHz (with the tuning interval set at 9 kHz) Other models:530-1,710 kHz (with the tuning interval set at 10 kHz) 531-1,602 kHz (with the tuning interval set at 9 kHz) CASSETTE DECK Track for

5、mat4 tracks, 2 channels stereo Frequency response50 Hz 10000 Hz Recording systemAC bias HeadsRecording/playback 1, erase 1 CD PLAYER LaserSemiconductor laser (? = 780 nm) Emission duration: continuous D/A converter1 bit dual Signal-to-noise ratio80 dB (1 kHz, 0 dB) Wow and flutterUnmeasurable Contin

6、ued on next page RadioFans.CN 收音机爱 好者资料库 2 CX-LFA500 1. SERVICING NOTES3 2. GENERAL5 3. DISASSEMBLY 3-1. Top Cabinet, Rear Panel7 3-2. Front Panel Assy 8 3-3. CONTROL Board, Single Cassette Mechanism 8 3-4. CD Mechanism Deck (CDM55A-K6BD44B) 9 3-5. MAIN Board, POWER Board 9 3-6. LOADING Board 10 3-7

7、. CD Board 10 3-8. Tray (CDM55D) 11 3-9. Optical Pick-up (KSM-213D), Holder (C213) 11 4. MECHANICAL ADJUSTMENTS 13 5. ELECTRICAL ADJUSTMENTS 14 6. DIAGRAMS 17 6-1. Block Diagram CD Section 18 6-2. Block Diagram Main Section 19 6-3. Printed Wiring Board CD Section 20 6-4. Schematic Diagram CD Section

8、 21 6-5. Printed Wiring Boards Main Section 22 6-6. Schematic Diagram Main Section 23 6-7. Printed Wiring Board Control Section 24 6-8. Schematic Diagram Control Section 25 6-9. Printed Wiring Board Power Section 26 6-10. Schematic Diagram Power Section 26 6-11. IC Pin Function Description 30 7. EXP

9、LODED VIEWS 7-1. Overall Section 32 7-2. Front Section 33 7-3. Chassis Section 34 7-4. CD Mechanism Deck Section 35 7-5. Optical Pick-up Section (KSM-213D) 36 8. ELECTRICAL PARTS LIST 37 TABLE OF CONTENTS Ver 1.2 2003.11 GENERAL Power requirements European model: Singaporeand Australian models: Kore

10、an model: Taiwan model: Other models: Power consumption European model: Other models: 230 V AC, 50/60 Hz Power consumption in standby mode with ECO mode on: 0.3 W with ECO mode off: 10 W Dimensions (w/h/d)Approx. 190 250 284 mm MassApprox. 3.7 kg Supplied accessories:FM antenna (1) AM antenna (1) Sp

11、eaker cords (2) Remote commander (1) Batteries (2) Specifications and external appearance are subject to change without notice. 220-240 V AC, 50/60 Hz 220 V AC, 60 Hz 110-120 V AC, 50/60 Hz 110-120 V/220-240 V AC, 50/60 Hz 52W 60W 220 V + 240 V AC, 50/60 Hz RadioFans.CN 收音机爱 好者资料库 3 CX-LFA500 SECTIO

12、N 1 SERVICING NOTES 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 APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENT

13、S PUBLISHED BY SONY. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. This appliance is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT MARKING is located on the exterior. Laser componen

14、t in this product is capable of emitting radiation exceeding the limit for Class 1. The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pa

15、y attention to electrostatic break-down and also use the procedure in the printed matter which is included in the repair parts. The flexible board is easily 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 o

16、n the disc reflective surface by the objective lens in the optical pick- up block. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objective lens. LASER DIODE AND FOCUS SEARCH OPERATION CHECK Carry out the “S curve check” in “CD section adjustment” and c

17、heck that the S curve waveforms is output three times. NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT 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. Flexible Circuit Board Repairing

18、 Keep the temperature of the soldering iron around 270 C during repairing. Do not touch the soldering iron on the same conductor of the circuit board (within 3 times). Be careful not to apply force on the conductor when soldering or unsoldering. RadioFans.CN 收音机爱 好者资料库 4 CX-LFA500 Service Position o

19、f the CD Mechanism Deck Service Position of the Tape Cassette Mechanism Deck 5 CX-LFA500 SECTION 2 GENERALThis section is extracted from instruction manual. 5 PARTS AND CONTROLS Main unit: front Refer to the pages indicated in parentheses for details. 1 4 2 3 6 7 8 9 5 1 POWER 6STANDBY/ON (7) Switch

20、es the unit on and off (standby). ECO (7) Sets the ECO mode on or off. RDS (10-12) Activates RDS features. 2 PHONES jack Plug in optional headphones set with a stereo mini plug (3.5 mm). Speaker output is cancelled. 3 SYNCHRO REC (15) Starts recording and CD play simultaneously. wREC START/REC PAUSE

21、 (15) Starts and pauses recording. 4 BASS (13) Adjusts the bass level. TREBLE (13) Adjusts the treble level. 5 ECD (7-9) Starts and pauses CD play. TUNER/BAND (7, 10) Selects tuner function and the tuner band. dTAPE (REC MUTING) (7, 14, 15) Starts playback and changes the playback side. Also used to

22、 enter 4-second blank spaces during recording. AUX (7) Selects the function of external equipment connected to AUX IN jacks. 6 zOPEN/CLOSE (8) Opens or closes the disc compartment. 7 sSTOP (8, 9, 14, 15) CD and Tape: stops playback. f/r-, +t/g (8, 10, 12-14, 16, 17) CD: skips to a previous or a succ

23、eeding track when pressed, searches a track in fast forward or reverse playback when held down. Tape: rewinds or fast forwards the tape. Tuner: manually tunes up or down within the band. 8 zPUSH EJECT (14, 15) Opens or closes the cassette holder. 9 VOLUME (13, 16) Adjusts the volume. Main unit: rear

24、 Refer to the pages indicated in parentheses for details. 1 2 3 4 5 1 AM LOOP terminal and FM 75 terminal (4) Plug in the supplied AM and FM antennas. 2 AUX IN jacks Accept analogue sound signals from external equipment. Connect external equipment using an optional connecting cable with RCA phono pl

25、ugs (red plug to R jack, white plug to L jack). Refer also to the operating instructions for your equipment. To switch function to external input, press AUX. To change a source name in the display of the AUX function. Hold down AUX and press POWER while the power is on. AUXVIDEOTV 3 SUB WOOFER3 jack

26、 Connect optional powered sub woofer with a built-in amplifier to the jack. 4 SPEAKERS3 terminals (4) Connect the speaker cords of the supplied speakers. 5 AC power cord (4) 6 Remote commander Refer to the pages indicated in parentheses for details. 1 4 5 6 7 9 8 ! # 0 2 3 Buttons with the same or s

27、imilar names on the main unit basically have the same function. 1 POWER (7) 2 110/0, 10 (8, 10) CD: selects a track of the specified number. Tuner: tunes in the station with the specified preset number. The numbered buttons take on these functions when pressed with SHIFT held down: CLOCK (7) Selects

28、 clock mode. TIMER (16) Selects timer mode. TUNER MODE (13) Switches between stereo or monaural FM reception. REV MODE (14, 15) Selects a reverse mode. 3 SHUFFLE/PROGRAM (8, 9) Selects shuffle or programmed CD playback mode. REPEAT (8) Selects repeat CD playback mode. 4 PRESETN,M (10) f/r,t/g (8, 10

29、, 12-14, 16, 17) ENTER (7, 10, 16, 17) Determines the mode. Stores the received station to preset. 5 ECD (7-9) TUNER/BAND (7, 10) dTAPE (7, 12) AUX (7) 6 DISPLAY (8) Changes the display in CD playback mode. DIMMER (7) Adjusts the display window brightness. SLEEP (16) Selects sleep-timer mode. 7 SHIF

30、T Hold down when pressing a numbered button to change its function to that printed above the number. 8 MUTING (13) To turn off the sound temporarily. 9 CLEAR (9, 10, 17) CD: Clears a CD program Tuner: Clears a preset station. 0 TREBLE (13) BASS (13) ! s (8, 9, 14, 15) FUNCTION (15) Switches the acti

31、ve function among TAPE, TUNER, AUX (VIDEO or TV) and CD. # VOLUME +,- (13) 6 CX-LFA500 7 ADJUSTMENTS BEFORE OPERATION ECO CLOCK POWER DIMMER SHIFT ECD, TUNER/ BAND, dTAPE, AUX f,g POWER 6STANDBY/ON ECD, TUNER/ BAND, dTAPE, AUX ENTER f,g ECO mode Reduces power consumption in standby mode with the fol

32、lowing operations. Press ECO. Each press of the button changes the mode as follows; ECO ON: Power economizing mode is activated. When the unit turns off, everything in the display disappears and only the red indicator above POWER lights to show that the power is being supplied. ECO OFF: Power econom

33、izing mode is cancelled. When the unit turns off, the clock display appears. Initial mode is ECO OFF. Standby power consumption ECO ON: 0.3 W ECO OFF: 10 W Setting the clock 1In stop mode, hold down SHIFT and press CLOCK on the remote. Go to step 3 when the hour of the clock display flashes. 2Within

34、 6 seconds, press ENTER. The hour flashes in the display. 3Press f or g to set the hour, then press ENTER. 4Press f or g to set the minute. Each press changes the time in 1-minute steps. 5Press ENTER. The time display stops flashing and the clock starts from 00 seconds. To display the time while the

35、 power is on Hold down SHIFT and press CLOCK on the remote. The time will be displayed for 6 seconds. Tip: AM 12:00 indicates midnight and PM12:00 noon. If - -:- - appears when the unit is turned off There has been a power interruption. Reset the clock. Power Turning the unit on Press POWER 6STANDBY

36、/ON (POWER on the remote ). Alternatively, press dTAPE, TUNER/BAND, AUX or ECD. Playback will start automatically if a disc or tape is loaded. Turning the unit off Press POWER 6STANDBY/ON again. The unit goes into standby. Dimmer The display window brightness can be selected. Press DIMMER on the rem

37、ote repeatedly. Each press of the button changes the following three levels: DIMMER 1, DIMMER 2 and DIMMER 0. DIMMER 0 is brightest. 7 CX-LFA500 SECTION 3 DISASSEMBLY Note: Follow the disassembly procedure in the numerical order given. This set can be disassembled in the order shown below. SET MAIN

38、BOARD, POWER BOARD LOADING BOARDCD BOARDTRAY (CDM55D) OPTICAL PICK-UP (KSM-213D), HOLDER (C213) CD MECHANISM DECK (CDM55A-K6BD44B) CONTROL BOARD, SINGLE CASSETTE MECHANISM FRONT PANEL ASSY TOP CABINET, REAR PANEL 3-1. Top Cabinet, Rear Panel 1three screws (+KTP 3 12) 2three screws (+KTP 3 12) 3six s

39、crews (+BVTP 3 10) 7two screws (+BVTP 3 10) 8three screws (+BVTP 3 10) 5top cabinet 4 qarear panel q;tuner (FM/AM) 6wire (flat type) 15p a a b b 9three screws (+BVTP 3 10) Ver 1.2 2003.11 8 CX-LFA500 3-2. Front Panel Assy 1two screws (+KTP 3 12) 2four screws (+BVTP 3 10) 3wire (flat type) 12p (CN305

40、) 4wire (flat type) 25p (CN302) 8front panel assy 5connector 5p (CN1) 6connector 6p 7connector 5p (CN201) 3-3. CONTROL Board, Single Cassette Mechanism 7single cassette mechanism (CMAL1Z222B) 5CONTROL board 1twelve screws (+BVTP 3 10) 6four screws (+BVTP 3 10) 2wire (flat type) 25p (CN601) 3wire (fl

41、at type) 12p (CN602) 4wire (flat type) 8p (CN603) 9 CX-LFA500 3-4. CD Mechanism Deck (CDM55A-K6BD44B) 1screw (+BVTP 3 10) 5CD holder 4 3screw (+BVTP 3 10) 6CD door assy 7CD mechanism deck (CDM55A-K6BD44B) 2wire (flat type) 21p (CN303) 3-5. MAIN Board, POWER Board 2two screws (+BVTP 3 10) 3two screws

42、 (+BVTP 3 10) 7four screws (+BVTP 3 10) 4six screws (+BVTP 3 10) 5heat sink assy 6MAIN board 9POWER board 1connector 7p (CN801) 8power transformer 10 CX-LFA500 3-6. LOADING Board 5 LOADING board 2two screws (+BTP 2.6 6) 4motor (LD) assy (M901) 1Remove the belt. 3Remove soldering from the two points.

43、 3-7. CD Board 2Remove soldering from the four points. 3 wire (flat type) 16p 5 CD board 4 wire (flat type) 21p (CN101) 1screw(+P 2.6 5) 11 CX-LFA500 3-8. Tray (CDM55D) 2tray 1While pressing the two protrusions A and B to unlock the two claws as shown, pull the tray in the direction of the arrow C.

44、(Be careful of the claws.) claw claw C A B 3-9. Optical Pick-up (KSM-213D), Holder (C213) 1two floating screws (+PTPWH M2.6) qffloating screws (+PTPWH M2.6) qgholder (C213) 5screw (+PTTP M2.6) 6stopper (BU) 2two compression spring (T213) 7compression spring (T213) 3insulator 8insulator9 screw (+PTTP

45、 M2.6) q;stopper (BU) qacompression spring (T213) qsinsulator qdoptical pick-up (KSM-213D) 4insulator Ver 1.2 2003.11 12 CX-LFA500 MEMO 13 CX-LFA500 2.94 7.84 mN m (30 to 79 g cm) (0.42 1.11 oz inch) 0.15 0.59 mN m (2 to 6 g cm) (0.03 0.08 oz inch) 0.15 0.59 mN m (2 to 6 g cm) (0.03 0.08 oz inch) 0.

46、15 0.59 mN m (2 to 6 g cm) (0.03 0.08 oz inch) 6.86 17.64 mN m (70 to 179 g cm) (0.98 2.49 oz inch) 9.8 mN m or more (100 g cm or more) (1.4 oz inch or more) 9.8 mN m or more (100 g cm or more) (1.4 oz inch or more) CQ-102C CQ-102C CQ-102RC CQ-102RC CQ-201B CQ-403A CQ-403R Precaution 1.Clean the fol

47、lowing parts with a denatured alcohol-moistened swab: record/playback headspinch rollers erase headrubber belts capstanidlers 2.Demagnetize the record/playback head with a head demag- netizer. 3.Do not use a magnetized screwdriver for the adjustments. 4.After the adjustments, apply suitable locking

48、compound to the parts adjusted. 5.The adjustments should be performed with the rated power supply voltage unless otherwise noted. Torque Measurement SECTION 4 MECHANICAL ADJUSTMENTS Mode FWD FWD back tension REV REV back tension FF/REW FWD tension REV tension Torque meterMeter reading 14 CX-LFA500 S

49、ECTION 5 ELECTRICAL ADJUSTMENTS Record/Playback Head Azimuth Adjustment Procedure: 1.Mode : Playback 2.Turn the adjustment screw and check output peaks. If the peaks do not match for L-CH and R-CH, turn the adjustment screw so that outputs match within 1 dB of peak. test tape P-4-A100 (10kHz, 10dB) MAIN board J203 speaker terminal level meter set+ L-CH peak R-CH peak screw position output level within 1 dB L-CH peak R-CH peak screw positio