Aiwa-XRHG7MD-cs-sm 电路图 维修手册.pdf

《Aiwa-XRHG7MD-cs-sm 电路图 维修手册.pdf》由会员分享，可在线阅读，更多相关《Aiwa-XRHG7MD-cs-sm 电路图 维修手册.pdf（50页珍藏版）》请在收音机爱好者资料库上搜索。

1、SERVICE MANUAL DATA XR-HG7MDRC-ZAS18 SYSTEM MD/CD CASSEIVER REMOTE CONTROLLER CX-NHG7MD MD/CD STEREO SYSTEM BASIC TAPE MECHANISM : AZM-1 A1 BASIC CD MECHANISM : AZG-1 SB3RNMD BASIC MD MECHANISM : AZG-TD XR-HG7MDEZ,K S/M Code No. 09-008-349-4R1 If requiring information about the CD mechanism, see Ser

2、vice Manual of 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). SPEAKER SX-WNH81 REVISION This Service Manual is the Revision Publishing and replaces Simple Manual (S/M Code No. 09-008-349-4T1). RadioFans

3、.CN 收音机爱 好者资料库 2 Main unit CX-NHG7MD FM tuner section Tuning range87.5 MHz to 108 MHz Usable sensitivity (IHF)16.8 dBf Antenna terminal75 ohms (unbalanced) AM (MW) tuner section Tuning range531 kHz to 1602 kHz (9 kHz step) 530 kHz to 1710 kHz (10 kHz step) Usable sensitivity350 V/m AntennaLoop anten

4、na LW tuner section Tuning range144 kHz to 290 kHz Usable sensitivity1400 V/m AntennaLoop antenna Amplifier section Mid-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 +

5、 40 W Total harmonic distortion0.1 % (10 W, 1 kHz, 8 ohms, DIN AUDIO) 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

6、Hz, 6 ohms, DIN AUDIO) InputsVIDEO/AUX: 316 mV DIGITAL IN (OPTICAL) OutputsSPEAKERS LOW FREQ: accept speakers of 6 ohms or more SPEAKERS HIGH FREQ: accept speakers of 8 ohms or more SURROUND SPEAKERS: accept speakers of 8 ohms to 16 ohms PHONES (stereo jack): accepts headphones of 32 ohms or more CD

7、 DIGITAL OUT (OPTICAL) jack SPECIFICATIONS Compact disc player section LaserSemiconductor laser ( = 780 nm) D-A converter1 bit dual Signal-to-noise ratio85 dB (1 kHz, 0 dB) Harmonic distortion0.05 % (1 kHz, 0 dB) Wow and flutterUnmeasurable MD recorder section ScanningmethodNon-contact optical scann

8、er (Semiconductor laser application) Recording systemMagnetic polarity modulation overwrite system Rotation speedApprox. 400 - 900 rpm (CLV) Sampling frequency44.1 kHz No. of channelsStereo: 2 channels Monaural: 1 channel A-D, D-A converter1-bit Frequency20 to 20000 Hz + 0.5 - 1.5 dB Wow & FlutterUn

9、measurable Cassette deck section Track format4 tracks, 2 channels stereo Frequency response50 Hz 15000 Hz Recording systemAC bias HeadsRecording/playback head x 1, erase head x 1 General Power requirements230 V AC, 50 Hz Power consumption160 W Power consumption in standby mode If the power-economizi

10、ng mode is ECO OFF: 22 W If the power-economizing mode is ECO ON or ECO AUTO: 0.9 W Dimensions of main unit260 x 324 x 394 mm (W x H x D) Weight of main unit11 kg Speaker system SX-WNH81 Speaker system3 way, Built-in subwoofer (magnetic shielded type) Speaker unitsSubwoofer: 200 mm cone type Full ra

11、nge: 120 mm cone type Super tweeter: 20 mm ceramic type Impedance6 ohms/8 ohms Sensitvity87 dB/W/m Dimensions (W x H x D)240 x 324 x 285 mm Weight5.7 kg REF. NOPART NO.KANRIDESCRIPTION NO. 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 87-0

12、06-225-010 ANT,LOOP ANT NC2 4 87-A90-118-010 ANT,WIRE FM(Z) !5 87-099-811-010 PLUG,ADPTR CONV(K) Design and specifications are subject to change without notice. The word “BBE” and the “BBE symbol” are trademarks of BBE Sound, Inc. Under license from BBE Sound, Inc. RadioFans.CN 收音机爱 好者资料库 3 PROTECTI

13、ON OF EYES FROM LASER BEAM DURING SERVICING VAROITUS! Laiteen Kyttminen muulla kuin tss kyttohjeessa mainit- ulla tavalla saattaa altistaa kyt-tjn turvallisuusluokan 1 ylit- tvlle nkymttmlle lasersteilylle. VARNING! Om apparaten anvnds p annat stt n vad som specificeras i denna bruksanvising, kan an

14、vndaren utsttas fr osynling laserstrlning, som verskrider grnsen fr laserklass 1. Caution: Invisible laser radiation when open and interlocks defeated avoid expo- sure to beam. Advarsel:Usynling laserstling ved bning, nr sikkerhedsafbrydere er ude af funktion. Undg udsttelse for strling. CAUTION Use

15、 of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. ATTENTION Lutilisation de commandes, rglages ou procdures autres que ceux spcifis peut entraner une dangereuse exposition aux radiations. ADVARSEL! Usynlig laserstli

16、ng ved bning, nr sikkerhedsafbrydereer ude af funktion. Undg udsttelse for strling. This Compact Disc player is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT label is located on the rear exterior. This set employs laser. Therefore, be sure to follow carefully the instructions belo

17、w when servicing. WARNING! WHEN SERVICING, DO NOT APPROACH THE LASER EXIT WITH THE EYE TOO CLOSELY. IN CASE IT IS NECESSARY TO CONFIRM LASER BEAM EMISSION. BE SURE TO OBSERVE FROM A DISTANCE OF MORE THAN 30cm FROM THE SURFACE OF THE OBJECTIVE LENS ON THE OPTICAL PICK-UP BLOCK. CLASS 1 KLASSE 1 LUOKA

18、N 1 KLASS 1 LASER PRODUCT LASER PRODUKT LASER LAITE LASER APPARAT Precaution to replace Optical block (KSS-213F) 1) After the connection, remove solder shown in the right figure. Body or clothes electrostatic potential could ruin laser diode in the optical block. Be sure ground body and workbench, a

19、nd use care the clothes do not touch the diode. RadioFans.CN 收音机爱 好者资料库 4 CD service position Remove the CABI, STEEL. Remove the five screws (BVT2+3-10) A. Turn over the unit 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

20、screws (QT2+3-12) B of the AZG-1 CABI, FR. (The screws are used at the both sides.) NOTE ON BEFORE STARTING REPAIR A A B 5 Remove the hooks in the direction of the arrow. (The hooks are used at the both sides.) Pull the CABI, BOTTOM up to the diagonally top right and remove it. Lay down the unit and

21、 remove the 3ZG-2 mechanism. Extend the 3ZG-2 mechanism using the respective extension jigs. Service position HOOK 6 TEST MODE 7 1. Starting up the MD Test Mode While pressing the MD function button, insert the AC plug into the outlet. Notes: 1) Mechanical abnormalities are ignored while the test mo

22、de is starting up. If any abnormality occurs, disconnect the plug immediately. 2) During test mode operation, playback and recording are not possible. 2. Checking the MD Test Mode Indication About five seconds after the test mode starts, characters are displayed as shown below on the display and the

23、 test mode becomes usable. 3. Canceling the MD Test Mode 1)Keep pressing the MD EJECT button to eject the disk. 2)Disconnect the AC plug. *If the MD test mode is canceled by procedures other than the above, the unit sometimes run incorrectly when the power is turned on again. If this happens, discon

24、nect the AC plug. 4. Switching to the Servo Standby Mode After starting up the test mode, press the STOP button to switch to the servo standby 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

25、. Audio System Output Check The signal of 1 kHz, -17 dBV (140 mV) can be checked using the MD board AOUTL, AOUTR in the test mode. 5. Checking the Sled Feed Operation 1)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 out

26、er 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. 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

27、 move the pickup to the innermost circumference (CLASSIC lights) and press the MD EJECT button to unload the mechanism. 6. Checking the Laser Power 1)Every time the EDIT button is pressed in the “ALL SVoFF” state, the laser power is switched. The display is switched as shown below. 2)After checking,

28、 press the STOP button to return the display to “ALL SVoFF”. MD TEST MODE LA 1/2 LA READLA WRITE ALL SVoFF 8 7. Checking the Loading Mechanism and OWH To 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 mag

29、azines 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 button 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

30、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 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 t

31、he slot, loading is not performed. 8. Display Indication The state of the circuits, selected disk and switches can be checked on the display. 9. Checking the Servo Operation 9-1. Checking the Focus Search and Spindle Kick 1 (checking the S-curve) 1) When the RANDOM/REPEAT button of the remote contro

32、l is pressed in the “ALL SVoFF” state, the focus search is performed. Then “FOCUS CHK” is displayed. These operations are repeated regardless of whether 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 t

33、o “ALL SVoFF”. 9-2. Checking the Focus Search and Spindle Kick 2 1) When the PLAY button is pressed in the “ALL SVoFF” state without inserting a disk, the search and spindle kick are performed at the same time. Then “FOCUS SCH” is displayed. 2) After checking, press the STOP button to return the dis

34、play to “ALL SVoFF”. 9-3. Checking the Focus Servo 1) Insert a disk. 2) Press the MODE button and set the servo mode according to the inserted disk as shown below. MO disk .Indication “SEL GRV” appears and “TIME MARK” lights. PIT disk .Indication “SEL PIT” appears and “AUTO MARK” lights. 3) Press th

35、e 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 SVoFF”. 9-4. Checking the All Servo ON 1) When the ENTER button is pressed in the “FOCUS ON!” state, the tracking sled servo is turned on

36、and all servos run. If the servos are all normal, “ALL SV ON” is displayed. 2) After checking, press the STOP button to return the display to “ALL SVoFF”. FunctionDisplayPict indicationDuring pict onDuring pict off 1Laser powerLA READ-1/2-WRITET-BASSDisplayed using the three-step level meter 2Disk t

37、ypeSEL GRVAUTO MARKMO DISC (for recording and playback) SEL PITTIME MARKPIT DISC (for playback) 3REC PROTECT SWROCKREC is possibleREC protect 4REFLECT SWPOPPIT DISCMO DISC 5INSIDE LIMIT SWCLASSICSW ONSW OFF (innermost circumference) 2 DISC TYPE 1 LASER POWER 3 REC PROTECT SW 4 REFLECT SW 5 INSIDE LI

38、MIT SW 9 All 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 adjust. 1. Temperature Compensation Adjustment *Normally, do not perform the temperature compensation adjustment. If the adjustment value is

39、 extensively different, perform the adjustment as given below in a suitable environment for measuring the correct temperature near the unit. Test point: Check the test point on the display. Tool: Thermometer 1)After the MD test mode starts up, press the STOP button to display “ALL SVoFF”. 2)Press th

40、e 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. 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 the di

41、splay. 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) to 3) and press the ENTER button without changing the adjustment value using the B/F.SKIP button. 2. Laser Power Adjustment Tes

42、t point: Check the display/Pickup laser output Tool: Laser power meter (meters that can measure up to 10 mW) 2-1. Playback Laser Power Adjustment 1) Press the EDIT button in the “ALL SVoFF” state to change the display to “LA READ”. 2) Press the PAUSE button once to display “LASER = $*”. 3) Adjust “L

43、ASER=$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 adjustment, press the STOP button to change the display to “ALL SVoFF”. 2-2. Record Laser Power Adjustment 1) Press the

44、 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 and F.SKIP buttons and press the ENTER button. 4) Measure the pickup laser output using the laser power meter and chec

45、k 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 Sequence Adjustment (EFB/IVR/FOCUS AGC/TRACKING AGC adjustment) Test point: Check the test point on the display.

46、 Test disk: MDW-74, TGYS-1 or equivalent 3-1. Adjusting the MO Disk 1) Load the MDW-74. 2) Press the MODE button to display “SEL GRV”. 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 b

47、utton to return the display to “ALL SVoFF”. 3-2. IVR, EFB, Focus/Tracking/Sled Gain Check of MO Disk 1) 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

48、 STOP button and press the DISPLAY button twice. Confirm that the values of “I$*: E$” are within the range shown below. (hexadecimal) I$“*” .03 to 0A E$ “” .09 to 15 ELECTRICAL ADJUSTMENT IVREFB 10 5) Press the DISPLAY once again. Confirm that the values of “f*t#s33” are within the range shown below

49、. (hexadecimal) f “*” .1A to 40 t “#”.0C to 30 s “33” .0C to 30 6) After adjustment, press the STOP button to return the display to “ALL SVoFF”. 3-3. Adjusting the PIT Disk 1) Insert the TGYS-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” app