Aiwa-XRHG7MD-cs-sm维修电路原理图.pdf

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1、SERVICE MANUALDATAXR-HG7MDRC-ZAS18SYSTEMMD/CDCASSEIVERREMOTE CONTROLLERCX-NHG7MDMD/CDSTEREO SYSTEMBASIC TAPE MECHANISM : AZM-1 A1BASIC CD MECHANISM : AZG-1 SB3RNMDBASIC MD MECHANISM : AZG-TD XR-HG7MDEZ,KS/M Code No. 09-008-349-4R1If requiring information about the CD mechanism, see Service Manual of

2、 AZG-1(S/M Code No. 09-001-335-3NE). If requiring information about the MD mechanism, see Service Manual of AZG-T(S/M Code No. 09-007-348-1N2). SPEAKERSX-WNH81REVISIONThis Service Manual is the Revision Publishing and replaces Simple Manual(S/M Code No. 09-008-349-4T1).RadioFans.CN 收音机爱 好者资料库2Main u

3、nit CX-NHG7MDFM tuner sectionTuning range87.5 MHz to 108 MHzUsable sensitivity (IHF)16.8 dBfAntenna terminal75 ohms (unbalanced)AM (MW) tuner sectionTuning range531 kHz to 1602 kHz (9 kHz step)530 kHz to 1710 kHz (10 kHz step)Usable sensitivity350 V/mAntennaLoop antennaLW tuner sectionTuning range14

4、4 kHz to 290 kHzUsable sensitivity1400 V/mAntennaLoop antennaAmplifier sectionMid-high frequency amplifier Power outputRated: 20 W + 20 W (8 ohms,T.H.D. 1 %, 1 kHz/DIN 45500)Reference : 25 W + 25 W (8 ohms,T.H.D. 10 %, 1 kHz/DIN 45324)DIN MUSIC POWER: 40 W + 40 W Total harmonic distortion0.1 % (10 W

5、, 1 kHz, 8 ohms, DINAUDIO)Low frequency amplifier Power outputRated: 60 W + 60 W (6 ohms,T.H.D. 1 %, 130 Hz/DIN 45500)Reference : 75 W + 75 W (6 ohms,T.H.D. 10 %, 130 Hz/DIN 45324)DIN MUSIC POWER: 130 W + 130 W Total harmonic distortion0.1 % (30W, 130 Hz, 6 ohms, DINAUDIO)InputsVIDEO/AUX: 316 mVDIGI

6、TAL IN (OPTICAL)OutputsSPEAKERS LOW FREQ:accept speakers of 6 ohms or moreSPEAKERS HIGH FREQ:accept speakers of 8 ohms or moreSURROUND SPEAKERS:accept speakers of 8 ohms to 16ohmsPHONES (stereo jack): acceptsheadphones of 32 ohms or moreCD DIGITAL OUT (OPTICAL) jackSPECIFICATIONSCompact disc player

7、sectionLaserSemiconductor laser ( = 780 nm)D-A converter1 bit dualSignal-to-noise ratio85 dB (1 kHz, 0 dB)Harmonic distortion0.05 % (1 kHz, 0 dB)Wow and flutterUnmeasurableMD recorder sectionScanningmethodNon-contact optical scanner(Semiconductor laser application)Recording systemMagnetic polarity m

8、odulationoverwrite systemRotation speedApprox. 400 - 900 rpm (CLV)Sampling frequency44.1 kHzNo. of channelsStereo: 2 channelsMonaural: 1 channelA-D, D-A converter1-bitFrequency20 to 20000 Hz + 0.5 - 1.5 dBWow & FlutterUnmeasurableCassette deck sectionTrack format4 tracks, 2 channels stereoFrequency

9、response50 Hz 15000 HzRecording systemAC biasHeadsRecording/playback head x 1,erase head x 1GeneralPower requirements230 V AC, 50 HzPower consumption160 WPower consumption in standby modeIf the power-economizing mode isECO OFF: 22 WIf the power-economizing mode isECO ON or ECO AUTO: 0.9 WDimensions

10、of main unit260 x 324 x 394 mm(W x H x D)Weight of main unit11 kgSpeaker system SX-WNH81Speaker system3 way, Built-in subwoofer (magneticshielded type)Speaker unitsSubwoofer: 200 mm cone typeFull range: 120 mm cone typeSuper tweeter: 20 mm ceramic typeImpedance6 ohms/8 ohmsSensitvity87 dB/W/mDimensi

11、ons (W x H x D)240 x 324 x 285 mmWeight5.7 kgREF. NOPART NO.KANRIDESCRIPTIONNO.ACCESSORIES LIST 1 8A-DB6-915-010 IB,K(E)I 1 8A-DB6-916-010 IB,EZ(9L)I 2 8Z-NB5-703-010 RC UNIT,RC-ZAS18 3 87-006-225-010 ANT,LOOP ANT NC2 4 87-A90-118-010 ANT,WIRE FM(Z)!5 87-099-811-010 PLUG,ADPTR CONV(K) Design and spe

12、cifications are subject to change without notice. The word “BBE” and the “BBE symbol” are trademarks of BBESound, Inc. Under license from BBE Sound, Inc.RadioFans.CN 收音机爱 好者资料库3PROTECTION OF EYES FROM LASER BEAM DURING SERVICINGVAROITUS!Laiteen Kyttminen muulla kuin tss kyttohjeessa mainit-ulla tava

13、lla saattaa altistaa kyt-tjn turvallisuusluokan 1 ylit-tvlle nkymttmlle lasersteilylle.VARNING!Om apparaten anvnds p annat stt n vad som specificeras idenna bruksanvising, kan anvndaren utsttas fr osynlinglaserstrlning, som verskrider grnsen fr laserklass 1.Caution: Invisible laser radiation whenope

14、n and interlocks defeated avoid expo-sure to beam.Advarsel:Usynling laserstling ved bning,nr sikkerhedsafbrydere er ude af funktion.Undg udsttelse for strling.CAUTIONUse of controls or adjustments or performance of proceduresother than those specified herein may result in hazardousradiation exposure

15、.ATTENTIONLutilisation de commandes, rglages ou procdures autres queceux spcifis peut entraner une dangereuse exposition auxradiations.ADVARSEL!Usynlig laserstling ved bning, nr sikkerhedsafbrydereer udeaf funktion. Undg udsttelse for strling.This Compact Disc player is classified as a CLASS 1 LASER

16、product.The CLASS 1 LASER PRODUCT label is located on the rearexterior.This set employs laser. Therefore, be sure to follow carefully theinstructions below when servicing.WARNING!WHEN SERVICING, DO NOT APPROACH THE LASER EXITWITH THE EYE TOO CLOSELY. IN CASE IT IS NECESSARY TOCONFIRM LASER BEAM EMIS

17、SION. BE SURE TO OBSERVEFROM A DISTANCE OF MORE THAN 30cm FROM THESURFACE OF THE OBJECTIVE LENS ON THE OPTICALPICK-UP BLOCK.CLASS 1KLASSE 1LUOKAN 1KLASS 1LASER PRODUCTLASER PRODUKTLASER LAITELASER APPARATPrecaution to replace Optical block(KSS-213F)1) After the connection, remove solder shown inthe

18、right figure.Body or clothes electrostatic potential could ruinlaser diode in the optical block. Be sure groundbody and workbench, and use care the clothesdo not touch the diode.RadioFans.CN 收音机爱 好者资料库4CD service positionRemove the CABI, STEEL.Remove the five screws (BVT2+3-10) A.Turn over the unit

19、and remove the CABI, BOTTOM.Remove the two FFCs (13P and 6P) the CD block from the hook of the CABI, BOTTOM.Loosen the two screws (QT2+3-12) B of the AZG-1 CABI, FR. (The screws are used at the both sides.)NOTE ON BEFORE STARTING REPAIRAABRadioFans.CN 收音机爱 好者资料库5Remove the hooks in the direction of

20、the arrow. (The hooks are used at the both sides.) Pull the CABI, BOTTOM up to the diagonallytop right and remove it.Lay down the unit and remove the 3ZG-2 mechanism.Extend the 3ZG-2 mechanism using the respective extension jigs.Service positionHOOKRadioFans.CN 收音机爱 好者资料库6TEST MODE RadioFans.CN 收音机爱

21、 好者资料库71. Starting up the MD Test ModeWhile pressing the MD function button, insert the AC plug into the outlet.Notes: 1) Mechanical abnormalities are ignored while the test mode is starting up.If any abnormality occurs, disconnect the plug immediately.2) During test mode operation, playback and rec

22、ording are not possible.2. Checking the MD Test ModeIndicationAbout five seconds after the test mode starts, characters are displayed as shown below on the display and the test mode becomesusable.3. Canceling the MD Test Mode1)Keep pressing the MD EJECT button to eject the disk.2)Disconnect the AC p

23、lug.*If the MD test mode is canceled by procedures other than the above, the unit sometimes run incorrectly when the power is turnedon again. If this happens, disconnect the AC plug.4. Switching to the Servo Standby ModeAfter starting up the test mode, press the STOP button to switch to the servo st

24、andby mode. (Indication: ALL SVoFF)Change from the this mode to other modes.When the STOP button is pressed in each mode, the display returns to “ALL SVoFF”.4-1. Audio System Output CheckThe signal of 1 kHz, -17 dBV (140 mV) can be checked using the MD board AOUTL, AOUTR in the test mode.5. Checking

25、 the Sled Feed Operation1)Press the CD 1MD REC button to load the mechanism.2)Press the F.SKIP button in the “ALL SVoFF” state to move the pickup to the outer circumference.Then “T.SLED fwd” is displayed.3)Press the B.SKIP button in the “ALL SVoFF” state to move the pickup to the inner circumference

26、.Then “T.SLED rvs” is displayed. Turn on the INSIDE LIMIT switch to turn on the graphic equalizer “CLASSIC”.4)After checking, press the B.SKIP button to move the pickup to the innermost circumference (CLASSIC lights) and press the MDEJECT button to unload the mechanism.6. Checking the Laser Power1)E

27、very time the EDIT button is pressed in the “ALL SVoFF” state, the laser power is switched. The display is switched as shownbelow.2)After checking, press the STOP button to return the display to “ALL SVoFF”.MD TEST MODELA 1/2LA READLA WRITEALL SVoFFRadioFans.CN 收音机爱 好者资料库87. Checking the Loading Mec

28、hanism and OWHTo check the operations of the loading mechanism and OWH, follow the procedure given below.Method 1: Insert the MO disk into the desired slot of magazines 1 to 3 and press the MD DISC DIRECT PLAY button of the slot.After loading, confirm that the OWH moves up.Method 2: Press CD 1MD but

29、ton in the “ALL SVoFF” state. The mechanism is loaded regardless of whether a disk is inserted.To load the disk, insert the disk into the slot at the position where the elevator stops.Every time the CD 1MD REC button or MD EJECT button is pressed during loading, the OWH moves up or down.CD 1MD. The

30、OWH moves down.MD EJECT button. The OWH moves up and is unloaded.Note: Even if the MD DISC DIRECT PLAY button is pressed when a disk is not inserted into the slot, loading is not performed.8. Display IndicationThe state of the circuits, selected disk and switches can be checked on the display.9. Che

31、cking the Servo Operation9-1. Checking the Focus Search and Spindle Kick 1 (checking the S-curve)1) When the RANDOM/REPEAT button of the remote control is pressed in the “ALL SVoFF” state, the focus search isperformed. Then “FOCUS CHK” is displayed. These operations are repeated regardless of whethe

32、r a disk is installed.Therefore, the S-curve can be checked with the disk inserted.2) After checking, press the STOP button to return the display to “ALL SVoFF”.9-2. Checking the Focus Search and Spindle Kick 21) When the PLAY button is pressed in the “ALL SVoFF” state without inserting a disk, the

33、search and spindle kick areperformed at the same time. Then “FOCUS SCH” is displayed.2) After checking, press the STOP button to return the display to “ALL SVoFF”.9-3. Checking the Focus Servo1) Insert a disk.2) Press the MODE button and set the servo mode according to the inserted disk as shown bel

34、ow. MO disk .Indication “SEL GRV” appears and “TIME MARK” lights. PIT disk .Indication “SEL PIT” appears and “AUTO MARK” lights.3) Press the PLAY button.If the focus servo is normal, “FOCUS SRCH” appears and “FOCUS ON!” appears.4) After checking, press the STOP button to return the display to “ALL S

35、VoFF”.9-4. Checking the All Servo ON1) When the ENTER button is pressed in the “FOCUS ON!” state, the tracking sled servo is turned on and all servos run. If theservos are all normal, “ALL SV ON” is displayed.2) After checking, press the STOP button to return the display to “ALL SVoFF”.FunctionDispl

36、ayPict indicationDuring pict onDuring pict off1Laser powerLA READ-1/2-WRITET-BASSDisplayed using the three-step level meter2Disk typeSEL GRVAUTO MARKMO DISC (for recording and playback)SEL PITTIME MARKPIT DISC (for playback)3REC PROTECT SWROCKREC is possibleREC protect4REFLECT SWPOPPIT DISCMO DISC5I

37、NSIDE LIMIT SWCLASSICSW ONSW OFF(innermost circumference)2 DISC TYPE1 LASER POWER3 REC PROTECT SW4 REFLECT SW5 INSIDE LIMIT SWRadioFans.CN 收音机爱 好者资料库9All the adjustments and checks of the MD block are performed in the test mode.When “No Adjust” appears on the display, follow sections 1 through 3 to

38、adjust.1. Temperature Compensation Adjustment*Normally, do not perform the temperature compensation adjustment.If the adjustment value is extensively different, perform the adjustment as given below in a suitable environment for measuringthe correct temperature near the unit. Test point: Check the t

39、est point on the display. Tool: Thermometer1)After the MD test mode starts up, press the STOP button to display “ALL SVoFF”.2)Press the DISPLAY button to display “TEMP = $*”.3)Press the PAUSE button to display “T + *C :+ 00”.4)Put the thermometer near the MD mechanism to measure the room temperature

40、.5)Check the values of the thermometer and press the B.SKIP button and the F.SKIP button until the value is the same as * of thedisplay. Press the ENTER button to store the value.6)After adjustment, press the STOP button to return the display to “ALL SVoFF”.*When “No Adjust” is displayed, perform 1)

41、 to 3) and press the ENTER button without changing the adjustment value using theB/F.SKIP button.2. Laser Power Adjustment Test point: Check the display/Pickup laser output Tool: Laser power meter (meters that can measure up to 10 mW)2-1. Playback Laser Power Adjustment1) Press the EDIT button in th

42、e “ALL SVoFF” state to change the display to “LA READ”.2) Press the PAUSE button once to display “LASER = $*”.3) Adjust “LASER=$11” using the B.SKIP and F.SKIP buttons and press the ENTER button.4) Measure the pickup laser output using the laser power meter and check that it is about 0.68mW.5) After

43、 adjustment, press the STOP button to change the display to “ALL SVoFF”.2-2. Record Laser Power Adjustment1) Press the EDIT button three times in the “ALL SVoFF” state to change the display to “LA WRITE”.2) Press the PAUSE button once to display “LASER = $*”.3) Adjust “LASER=$9F” using the B.SKIP an

44、d F.SKIP buttons and press the ENTER button.4) Measure the pickup laser output using the laser power meter and check that it is about 6.8mW.5) After adjustment, press the STOP button to return the display to “ALL SVoFF”.Note: If the laser power exceeds 7.0 mW, the pickup may be damaged.3. Automatic

45、Sequence Adjustment (EFB/IVR/FOCUS AGC/TRACKING AGC adjustment) Test point: Check the test point on the display. Test disk: MDW-74, TGYS-1 or equivalent3-1. Adjusting the MO Disk1) Load the MDW-74.2) Press the MODE button to display “SEL GRV”.3) Press the MD function button to display “AUTO ADJ”. Af

46、ter adjustment, “DONE” is displayed.(If the adjustment failed, “FAILED” appears.)4) Then, press the STOP button to return the display to “ALL SVoFF”.3-2. IVR, EFB, Focus/Tracking/Sled Gain Check of MO Disk1) Move the pickup to the center of the disk using the B.SKIP button and F.SKIP button.2) Press

47、 the PLAY button to display “FOCUS ON!”.3) Press the ENTER button to display “ALL SV ON”.4) Press the STOP button and press the DISPLAY button twice. Confirm that the values of “I$*: E$” are within the rangeshown below. (hexadecimal)I$“*” .03 to 0AE$ “” .09 to 15ELECTRICAL ADJUSTMENTIVREFBRadioFans.

48、CN 收音机爱 好者资料库105) Press the DISPLAY once again.Confirm that the values of “f*t#s33” are within the range shown below. (hexadecimal)f “*” .1A to 40t “#”.0C to 30s “33” .0C to 306) After adjustment, press the STOP button to return the display to “ALL SVoFF”.3-3. Adjusting the PIT Disk1) Insert the TGY

49、S-1.2) Press the MODE button to display “SEL PIT”.3) Press the MD function button to display “AUTO ADJ”. After adjustment, “DONE” is displayed. (If the adjustment failed,“FAILED” appears.)4) Then, press the STOP button to return the display to “ALL SVoFF”.3-4. IVR, EFB, Focus/Tracking/Sled Gain Chec

50、k of PIT Disk1) Move the pickup to the center of the disk using the B.SKIP button and F.SKIP button.2) Press the PLAY button to display “FOCUS ON!.3) Press the ENTER button to display “ALL SV ON”.4) Press the STOP button and press the DISPLAY button twice. Confirm that the values of “I$*: E$” are wi