Aiwa-CX-LDB10-LDB20-Service-Manual 电路图 维修手册.pdf

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1、SERVICE MANUAL Sony Corporation Personal Audio Group Published by Sony Engineering Corporation AEP Model E Model CX-LDB10/LDB20 Australian Model CX-LDB10 MICRO HI-FI COMPONENT SYSTEM 9-879-549-01 2005C1678-1 2005.03 Ver. 1.0 2005.03 SPECIFICATIONS CX-LDB10/LDB20 Model Name Using Similar MechanismHCD

2、-NE5 CD Base Unit NameBU-K7BD81B Section Optical Pick-up NameKSM-213EDP/C2NP Tape deckModel Name Using Similar MechanismHCD-NE5 SectionTape Transport Mechanism TypeCMAL5Z220A CX-LDB10/LDB20 are the Amplifier, CD player, Tape Deck and Tuner section in XR-DB10/DB20. Continued on next page Amplifier se

3、ction CX-LDB20 DIN power output (rated): 35 + 35 W (6 ohms at 1 kHz, DIN) Continuous RMS power output (reference): 40 + 40 W (6 ohms at 1 kHz, 10% THD) Music power output (reference): 62 + 62 W Inputs AUDIO IN:Sensitivity 700 mV, impedance 47 kilohms Outputs PHONES:Accepts headphones with an impedan

4、ce of 8 ohms or more SPEAKER:Accepts impedance of 6 to 16 ohms. CX-LDB10 DIN power output (rated): 20 + 20 W (6 ohms at 1 kHz, DIN) Continuous RMS power output (reference): 22.5 + 22.5 W (6 ohms at 1 kHz, 10% THD) Music power output (reference): 38 + 38 W Inputs AUDIO IN:Sensitivity 700 mV, impedanc

5、e 47 kilohms Outputs PHONES:Accepts headphones with an impedance of 8 ohms or more SPEAKER:Accepts impedance of 6 to 16 ohms. CD player section Laser Diode PropertiesEmission duration: continuous Laser Output*: Less than 44.6 W * This output is the value measurement at a distance of 200 mm from the

6、objective lens surface on the Optical Pick-up Block with 7 mm aperture) Frequency response20 Hz 20 kHz Tape deck section Recording system4-track 2-channel, stereo Frequency response50 13,000 Hz (3 dB), using Sony TYPE I cassettes Tuner section FM stereo, FM/AM superheterodyne tuner FM tuner section

7、Tuning range87.5 108.0 MHz AntennaFM lead antenna Antenna terminals75 ohms unbalanced Intermediate frequency10.7 MHz AM tuner section Pan-American model:530 1,710 kHz (with the tuning interval set at 10 kHz) 531 1,710 kHz (with the tuning interval set at 9 kHz) European model:531 1,602 kHz (with the

8、 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) AntennaAM loop antenna, external antenna terminal Intermediate frequency450 kHz Photo : CX-LDB20 RadioFans.CN 收音机爱 好者资料库 2 CX-LDB10/LDB20 Notes on

9、chip component replacement Never reuse a disconnected chip component. Notice that the minus side of a tantalum capacitor may be damaged by heat. Flexible Circuit Board Repairing Keep the temperature of the soldering iron around 270 C during repairing. Do not touch the soldering iron on the same cond

10、uctor of the circuit board (within 3 times). Be careful not to apply force on the conductor when soldering or unsoldering. 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. REPL

11、ACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. UNLEADED SOLDER Boards requiri

12、ng use of unleaded solder are printed with the lead- free mark (LF) indicating the solder contains no lead. (Caution: Some printed circuit boards may not come printed with the lead free mark due to their particular size) : LEAD FREE MARK Unleaded solder has the following characteristics. Unleaded so

13、lder melts at a temperature about 40 C higher than ordinary solder. Ordinary soldering irons can be used but the iron tip has to be applied to the solder joint for a slightly longer time. Soldering irons using a temperature regulator should be set to about 350 C. Caution: The printed pattern (copper

14、 foil) may peel away if the heated tip is applied for too long, so be careful! Strong viscosity Unleaded solder is more viscou-s (sticky, less prone to flow) than ordinary solder so use caution not to let solder bridges occur such as on IC pins, etc. Usable with ordinary solder It is best to use onl

15、y unleaded solder but unleaded solder may also be added to ordinary solder. This appliance is classified as a CLASS 1 LASER product. This label is located on the rear exterior. General Power requirements European model:AC 230 V, 50/60 Hz Korean model:AC 220 V, 60 Hz Australian model:AC 230 240 V, 50

16、/60 Hz Mexican model:AC 120 V, 60 Hz Argentine model:AC 220 V, 50/60 Hz Other models:AC 110 120 V or 220 240 V, 50/60 Hz Adjustable with voltage selector Power consumption CX-LDB20:95 W 0.3 W (in Power Saving Mode) CX-LDB10:65 W 0.3 W (in Power Saving Mode) Dimensions (w/h/d) excl. speakers Approx.

17、160 230 255 mm Mass excl. speakers CX-LDB20:Approx. 4.0 kg CX-LDB10:Approx. 3.8 kg Design and specifications are subject to change without notice. RadioFans.CN 收音机爱 好者资料库 3 CX-LDB10/LDB20 TABLE OF CONTENTS 1.SERVICING NOTES.4 2.GENERAL.5 3.DISASSEMBLY 3-1.Disassembly Flow .7 3-2.Rear Cabinet .7 3-3.

18、Top Panel Assy, Front Panel Assy .8 3-4.Base Unit (BU-K7BD81B) .8 3-5.Mechanical Deck (CMAL5Z220A) .9 3-6.CONTROL Board .9 3-7.MAIN Board, Power Transformer. 10 3-8.Lid (Cassette) . 10 4.TEST MODE. 11 5.MECHANICAL ADJUSTMENTS. 12 6.ELECTRICAL ADJUSTMENTS. 12 7.DIAGRAMS. 15 7-1.Block Diagram CD Secti

19、on . 16 7-2.Block Diagram MAIN Section . 17 7-3.Printed Wiring Board CD Board . 18 7-4.Schematic Diagram CD Board . 19 7-5.Printed Wiring Board MAIN Section (1/2) . 20 7-6.Printed Wiring Board MAIN Section (2/2) . 21 7-7.Schematic Diagram MAIN Section (1/3) . 22 7-8.Schematic Diagram MAIN Section (2

20、/3) . 23 7-9.Schematic Diagram MAIN Section (3/3) . 24 7-10. Printed Wiring Board CONTROL Board (1/2) . 25 7-11. Printed Wiring Board CONTROL Board (2/2) . 26 7-12. Schematic Diagram CONTROL Board . 27 7-13. Printed Wiring Board POWER Board . 28 7-14. Schematic Diagram POWER Board . 29 7-15. Printed

21、 Wiring Board AUX Section . 30 7-16. Schematic Diagram AUX Section . 30 8.EXPLODED VIEWS 8-1.Overall Section . 36 8-2.Front Panel Section . 37 8-3.Chassis Section. 38 8-4.Top Panel Assy . 39 9.ELECTRICAL PARTS LIST. 40 RadioFans.CN 收音机爱 好者资料库 4 CX-LDB10/LDB20 SECTION 1 SERVICING NOTES NOTES ON HANDL

22、ING THE OPTICAL PICK-UP BLOCK OR BASE UNIT 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, pay attention to electrostatic break-down a

23、nd 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 on the disc reflective surface by the obje

24、ctive 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 check that the S curve waveforms is output

25、 three times. MODEL IDENTIFICATION Back Panel Model NamePower Voltage Indication Mexican model120 V AC, 60 Hz AEP, Russian models230 V AC, 50/60 Hz Korean model220 V AC, 50/60 Hz Australian model230 240 V AC, 50/60 Hz Other models 110 120 V or (E51, Singapore, Malaysia and 220 240 V AC, 50/60Hz Arge

26、ntine models) Power voltage indication 5 CX-LDB10/LDB20 SECTION 2 GENERAL This section is extracted from instruction manual. Main unit AUDIO IN 8 (16, 22) AUDIO IN jack qg (18, 22) BASS/TREBLE q; (17) Cassette compartment qj CD SYNC wa (16) DISPLAY 9 (14, 20) Display window 5 FOLDER +/ qk (10, 11, 1

27、6) i-Bass 6 (17) OPEN (CD open/close) 7 (10) PHONES jack qh Remote sensor 2 STANDBY indicator ws (20, 23) TUNER/BAND qa (12, 13) TUNING +/ qd (12, 13, 17) VOLUME 4 (18, 22, 23, 25) ?/1 (power) 1 (7, 18, 19, 25) z REC PAUSE/START 3 (16) x (stop) qs (10, 16, 25) .m/M (skip back/ skip forward, rewind/f

28、ast forward) qd (10, 11, 15) Z PUSH OPEN (tape open/close) qf (15) TAPE/N (play) ql (15) CD/NX (play/pause) w; (10, 11, 24) List of button locations and reference pages How to use this page Use this page to find the location of buttons and other parts of the system that are mentioned in the text. Il

29、lustration number r DISPLAY9 (14, 20) RR Name of button/partReference page ALPHABETICAL ORDER A H I Z BUTTON DESCRIPTIONS 1234 567 8 9 q; qa qs qd qf qgqh qj qk ql w; wa ws 6 CX-LDB10/LDB20 Remote control CD qh (9, 11) CLEAR qd (11) CLOCK/TIMER SELECT 2 (18, 19, 23) CLOCK/TIMER SET 3 (8, 18, 19) DIS

30、PLAY ql (14, 20) ENTER 9 (8, 11, 12, 18, 19) EQ qs (17) FM MODE 4 (14, 24) FOLDER +/ qa (10, 11, 16) FUNCTION 6 (22, 25) PLAY MODE qk (9, 11, 24) REPEAT 4 (10) SLEEP w; (17) TAPE qg (15) TUNER/BAND 5 (12, 13) TUNER MEMORY qj (12) TUNING MODE qk (12, 13) VOLUME +/ 0 (18, 23) ?/1 (power) 1 (7, 18, 19,

31、 25) m/M (rewind/fast forward) 7 (10, 15) x (stop) 8 (10, 16, 25) X (pause) 8 (10, 15) N (play) 8 (9, 11, 19) +/ (tuning) qf (12, 13) ./ (go back/go forward) qf (8, 10, 11, 18, 19) ALPHABETICAL ORDER A OP Z BUTTON DESCRIPTIONS 4 5 6 7 8 9 0 3 2 1 qa qd qs ql qk qj qh qg qf w; Use buttons on the remo

32、te for the operation. 1Press ?/1 to turn on the system. 2Press CLOCK/TIMER SET. 3Press . or repeatedly to set the hour. 4Press ENTER. 5Press . or repeatedly to set the minute. 6Press ENTER. The clock starts working. To adjust the clock 1Press CLOCK/TIMER SET. 2Press . or until “CLOCK” appears, then

33、press ENTER. 3Do the same procedures as step 3 to 6 above. Note The clock is not displayed in Power Saving Mode (page 20). Setting the clock 7 CX-LDB10/LDB20 SECTION 3 DISASSEMBLY This set can be disassembled in the order shown below. 3-1.DISASSEMBLY FLOW Note: Follow the disassembly procedure in th

34、e numerical order given. 3-2.REAR CABINET 3-2.REAR CABINET (Page 7) 3-8.LID (CASSETTE) (Page 10) 3-5.MECHANICAL DECK (CMAL5Z220A) (Page 9) 3-7.MAIN BOARD, POWER TRANSFORMER (Page 10) 3-6.CONTROL BOARD (Page 9) 3-4.BASE UNIT (BU-K7BD81B) (Page 8) 3-3.TOP PANEL ASSY, FRONT PANEL ASSY (Page 8) SET 8DC

35、fan 9rear cabinet 5two screws (BVTP3 8) 6two screws (BVTP3 8) 7two claws 2four screws (BVTP3 8) 0screw (BVTP3 8) 1four screws (BVTP3 8) 4four screws (BVTP3 8) 3three screws (BVTP3 8) qaAM/FM tuner 8 CX-LDB10/LDB20 3-3.TOP PANEL ASSY, FRONT PANEL ASSY 3-4.BASE UNIT (BU-K7BD81B) 5screw (BVTP3 8) qascr

36、ew (BVTP3 8) qftwo screws (BVTP3 8) qgclaw qhclaw qjfront panel assy 6two earth wires qsearth wire 2 wire (flat type) (27core) (CN004) 7 wire (flat type) (17core) (CN003) 4 wire (flat type) (11core) q; wire (flat type) (23core) 3 top panel assy 1connector (2P) 8connector (7P)(CN102) 9connector (3P)(

37、CN101) qdconnector (6P) 1two screws (+PSW2.6 10) 4two vibration proof rubbers (GRN) 5base unit (BU-K7BD81B) 3two vibration proof rubbers (PNK) 2two screws (+PSW2.6 10) 9 CX-LDB10/LDB20 3-5.MECHANICAL DECK (CMAL5Z220A) 3-6.CONTROL BOARD 2four screws (BVTP3 8) 3coating clip 4two earth wires 1 wire (fl

38、at type) (7core) 5 plate (shield cassette) 6 mechanical deck (CMAL5Z220A) 8CONTROL board 2three screws (BVTP2.6 8) 3seven screws (BVTP2.6 8) 1knob (VOL) 4 wire (flat type) (17core) (CN401) 5 wire (flat type) (23core) (CN403) 6 wire (flat type) (7core) (CN404) 7 wire (flat type) (11core) (CN402) 10 C

39、X-LDB10/LDB20 3-7.MAIN BOARD, POWER TRANSFORMER 3-8.LID (CASSETTE) 2screw (BVTP3 8) 3two sumitite screws (B3) 5two tapping screws (B3) 9four screws 7two claws 8holder (pwb PT) 6shield cover 4MAIN board 1connector (13P)(CN902) q;power transformer 1Open the lid cassette. 3lid cassette claw two hooks 2

40、 2 11 CX-LDB10/LDB20 SECTION 4 TEST MODE COLD RESET The cold reset clears all data including preset data stored in the RAM to initial conditions. Execute this mode when returning the set to the customers. Procedure: 1.Press the ?/1 button to turn the set ON. 2.Press three buttons x , ?/1 and VOLUME

41、down simulta- neously. 3.The message “RESET” is displayed and the set is reset. TUNER STEP CHANGE A step of AM channels can be changed over between 9 kHz and 10 kHz. Procedure: 1.Press the ?/1 button to turn the set ON. 2.Select the function “TUNER”, and press TUNER/BAND button to select the BAND “A

42、M”. 3.Press the ?/1 button to turn the set OFF. 4.Press the and ?/1 buttons simultaneously, and thus the channel step is changed over. SHIP RESET Procedure: 1.Press the ?/1 button to turn the set ON. 2.Press the CD u button to select “CD” 3.Remove the disc. 4.The message “NO DISC” is displayed. 5.Pr

43、ess three buttons x , CD u and VOLUME down si- multaneously. 6.The message “SHIP RESET” is displayed and the set is reset. The CD function is activated. 7.To exit from this mode, press the ?/1 button and pull out the AC plug. PANEL TEST MODE This mode is used to check the software version, LCD, LED

44、and keyboard. Procedure: 1.Press the ?/1 button to turn the set ON. 2.Press the CD u button to select “CD” 3.Press three bottons DISPLAY , ?/1 and VOLUME down simultaneously. 4.When the panel test mode is activated, all segments are turned on. VERSION DISPLAY This mode is used check the model, desti

45、nation, software version. Procedure: 1.When the panel test mode is activated, press the button BASS/TREBLE, the model and destination are displayed. KEY TEST MODE Procedure: 1.When the panel test mode is activated, press the H button, to select the key test mode. 2.To enter the KEY test mode, the fluorescent indicator displays “K0 VO”. Each time a button is pressed, “KEY” value increases. However, once a button is pressed, it is n