Kenwood-DMCJ-7-R-Service-Manual 电路图 维修手册.pdf

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1、 General Power sourceDC . . . . . . 3.6 V (rechargeable lithium-ion battery NB-L10A x 1) DC 5 V (AC adaptor) AC 230 V, 50 Hz DC 3 V Separately available battery case (commercially available, AA size, alkaline battery x 2) DC 4.0 V : Separately available car adaptor, DC-C70 (for cars with a 12-24 V D

2、C negative earth electrical system) Power consumption7 W (AC adaptor) Output powerRMS; 20 mW (10 mW + 10 mW) (0.2 % T.H.D.) Charging timeApprox. 3.0 hours (When using the AC adaptor included with the unit) Battery life Note: The battery case is only sold in certain areas. For more details, please as

3、k your dealer. The continuous recording time is for analogue input when the volume level is set to VOL 0. The continuous play time shows the value when the volume level is set to VOL 15. The above values are the standard values when the unit is charged and used at an ambient temperature of 20 oC. Th

4、e operating time when using alkaline batteries may be different, depending on the type and manufacturer of the batteries, and on the operating temperature. Input sensitivity Output level DimensionsWidth: 87.0 mm (3-7/16) Height: 29.4 mm (1-3/16) Depth: 81.5 mm (3-7/32) Weight219 g (0.49 lbs.) with r

5、echargeable battery Input socketLine/optical digital, microphone (powered by the main unit) Output socketHeadphones (impedance: 32 ohms)/remote control unit MiniDisc Recorder TypePortable MiniDisc recorder Signal readoutNon-contact, 3-beam semi-coductor laser pick-up Audio channelsStereo 2 channels/

6、monaural (long- play mode) 1 channel Frequency response20 - 20,000 Hz ( 3 dB) Rotation speedApprox 400 - 900 rpm Error correctionACIRC (Advanced Cross Interleave Reed-Solomon Code) CodingATRAC (Adaptive Transform Acoustic Coding), 24-bit computed type Recording methodMagnetic modulation overwrite me

7、thod Sampling frequency44.1 kHz (32 kHz and 48 kHz signals are converted to 44.1 kHz, and then recorded.) Wow and flutterUnmeasurable (less than 0.001% W.peek) Continuous recording: Approx. 4.5 hours Continuous recording: Approx. 4 hours Continuous recording: Approx. 8.5 hours Continuous play: Appro

8、x. 6.5 hours Continuous play: Approx. 8 hours Continuous play: Approx. 14.5 hours Headphones10 mW +32 ohms10 mW LINE300mV (-12dB)50 k ohms Maximum output level Specified output Recording levelReference input levelInput impedance MIC H0.25 mV10 k ohms MIC L2.5 mV10 k ohms LINE100 mV20 k ohms Load imp

9、edance When using two, commercially available, high capacity, AA size, alkaline batteries (in the separately available battery case) When using the recharge- able battery NB-L10A (fully charged) included with the unit When using two, commercially available, high capacity, AA size batteries with the

10、rechargeable battery (fully charged) . . . . . . . . . . . . . . DIGITAL EDIT Adjustment item out of range, focus ON failure, and adjustment error When the PLAY button is pressed while ADJ. OK is displayed, AUTO2 is executed. Operation in each TEST mode 2. AUTO2 Mode When the STOP button is pressed

11、while the AUTO2 menu appears or during automatic adjustment, the mode changes to the TEST mode stop state. At this time the adjustment value is not output. Adjustment NG; Adjustment item out of range, and adjustment error 3. MANUAL2 Mode Adjustment item to be made in AUTO2 mode is performed manually

12、. When the VOL UP button is pressed during adjustment, the setting increases, and the new setting is output. If the VOL DOWN button is pressed during adjustment, the setting decreases and the new setting is output. If the VOLUP/DOWN button is held down, the setting changes continuously with 100 ms c

13、ycle. If the setting is within the allowable range, the RANDOM display lights. When the STOP button is pressed during MANUAL2 MENU or measurement or adjustment, the state is changed to the TEST mode stop state. When the PLAY button is pressed in B-ATT set state, the mode is changed to the continuous

14、 playback mode. As for operation during continuous playback refer to TEST-PLAY mode explanation. 4. TEST-PLAY Mode When the STOP button is pressed while the TEST-PLAY menu appears, or in TEST-PLAY or continuous playback mode, the mode changes to the TEST mode stop state. When the PLAY button is pres

15、sed while the TEST-PLAY menu appears,continuous playback is initiated from the current pickup position. Whenever the DISP button is pressed in the TEST-PLAY mode, the address changes as follows. 0050 03C0 0700 08A0 0050 Whenever the BASS key is pressed in the TEST-PLAY mode, the digit which is chang

16、ed by the SKIP UP/DOWN button changes as follows. 0050 0050 0050 0050 0050 When the SKIP UP button is pressed in the TEST-PLAY mode, the digit of address specified by the BASS button is set to +1h. (0 to F) When the SKIP DOWN button is pressed in the TEST-PLAY mode, the digit of address specified by

17、 the BASS button is set to -1h. (0 to F) * When the SKIP UP/DOWN button is held down, the setting changes continuously, one cycle being 100 ms. When the BASS button is pressed in the continuous playback mode, the number of jump lines changes as follows. 1 10 400 1 * After the number of jump lines is

18、 indicated for one second, the address indication is restored. T R _ When the SKIP UP button is pressed in the continuous playback mode, the specified number of lines is jumped in the FWD direction. When the SKIP DOWN button is pressed in the continuous playback mode, the specified number of lines i

19、s jumped in the REV direction. * When the SKIP UP/DOWN button is held down, jump is repeated every approx. 100 ms. When the STOP button is pressed while the TEST-REC menu appears, or in the TEST-REC mode or continuous record mode, the mode changes to the TEST mode stop state. When the PLAY button is

20、 pressed while the TEST-REC menu appears, the continuous record is initiated from the current pickup position. Whenever the DISP button is pressed in the TEST-REC mode, the address changes as follows. 0050 03C0 0700 08A0 0050 Whenever the BASS button is pressed in the TEST-REC mode, the digit which

21、is changed by the SKIP UP/DOWN button changes as follows. 0050 0050 0050 0050 0050 When the SKIP UP button s pressed in the TEST-REC mode, the digit of address specified by the BASS button is set to +1h.(0 to F) When the SKIP DOWN button is pressed in the TEST-REC mode, the digit of address specifie

22、d by the BASS button is set to -1h. (0 to F) * When the SKIP UP/DOWN button is held down, the setting changes continuously, one cycle being 100 ms. When the VOL UP/DOWN button is pressed in the TEST-REC mode or continuous record mode, the laser record power changes. (Servo gain changes also accordin

23、g to record power.) * After the laser record power is indicated for one second, the address indication is restored. R P W : Address : Laser power cord Operation is disabled if the premastered disc or disc is in miserase-protected state. 5. TEST-REC Mode Whenever the DISP button is pressed in the con

24、tinuous playback mode, the indication changes as follows. * Pit section Continuous playback (SUBQ address indication) S Q | Continuous playback (C1 error indication) C E | Continuous playback (SUBQ address indication) S Q * Groove section Continuous playback (ADIP address indication) A P | Continuou

25、s playback (C1 error indication) C E | Continuous playback (ADIP error indication) A E | Continuous playback (ADIP address indication) A P TROUBLE SHOOTING 10 6. Error data display Mode Reversing when SKIP DOWN button is pressed When the STOP button is pressed while the error data indication menu ap

26、pears or during error data indication, the mode changes to the TEST mode stop state. Error data 0 is the latest error. Error which occurred in the TEST mode is also stored in the memory. When the DISP button is pressed while the error data indication menu appears, the error data is initialized. C L

27、E A R _ : Error Code Explanation of error history code 12h : RF side FG, TG, and TCRS adjustment termination failure 13h : Adjustment servo retraction excessive retrial 17h : A, B, E, F, and TCRSO offset measurement value out of tolerable range 21h : Focus retraction completion allowable time-over 2

28、3h : Track search completion allowable time-over 32h : P-TOC read failure 42h : U-TOC read failure 44h : U-TOC write data write disabled/read check error 52h : SD write data write disabled 71h : Pickup position initialization time-over 72h : EEPROM data read check sum error 73h : Record head drive d

29、isabled (by EJECT lever) 82h : Power overvoltage detection 91h : Ambient temperature is higher that the allowable temperature. DMC-J7R(K) COVER1,1P( 98.11.30 1:45 PM yW 25 DMC-J7R 11 TROUBLE SHOOTING : Test Mode STOP : Pre-autoadjustment menu : ATT autoadjustment menu : Pre-manual adjustment menu :

30、ATT manual adjustment menu : Preadjustment value check menu : ATT adjustment value check menu : Continuous record menu (record/playback machine only) : Test mode normal playback menu : Error history display menu : EEPROM setting menu : INNER switch position measurement menu BASS T E S T Slide extern

31、al periphery move Slide internal periphery move Tset Mode Menu Test Mode Change Chart A U T O 1 A U T O 2 SKIP UPSKIP DOWN SKIP DOWN M A N U 1 SKIP UPSKIP DOWN M A N U 2 SKIP UPSKIP DOWN R S L T 1 SKIP UPSKIP DOWN R S L T 2 SKIP UPSKIP DOWN T R E C SKIP UPSKIP DOWN : Continuous playback menu T P L A

32、 Y SKIP UPSKIP DOWN N O R M A L SKIP UPSKIP DOWN E D A T A SKIP UPSKIP DOWN : Digital input signal monitor menu (record/playback machine only) D i n M o n SKIP UPSKIP DOWN E E P R O M SKIP UPSKIP DOWN I N N E R SKIP UP SKIP UP SKIP DOWN SKIP DOWNSKIP UP * When the STOP button is pressed in specific

33、menu, the TEST MODE STOP state is set. : Preautomatic Adjustment menu : Preadjustment error (adjustment value output) : During preadjustment adjustment Adjustment error Normal end : Preadjustment normal end (adjustment value output) : During ATT automatic adjustment PLAY PLAY A U T O 1 Preautomatic

34、Adjustment A D J . O K A D J . N G A T 2 A T 1 * When the STOP button is pressed in specific menu, the TEST MODE STOP state is set. * represent the adjustment number as follows. 0 0 : Innermost periphery move 0 2 : ABEF offset tentative measurement 0 4 : RF side focus gain coarse adjustment 0 5 : Fo

35、cus ATT tentative setting 0 6 : RF side bit section tracking gain adjustment 0 7 : COUT level setting for pit section adjustment 0 8 : External periphery move 0 9 : RF side groove section tracking gain adjustment 1 0 : COUT level setting for groove section adjustment 1 1 : RF side TCRS gain adjustme

36、nt 1 2 : Tracking ATT initial setting 1 3 : RF side focus gain minor adjustment 1 4 : Focus ATT initial setting 1 5 : S gain High ABEF offset measurement 1 6 : TCRS offset measurement 1 7 : S gain Low ABEF offset measurement DMC-J7R(K) COVER1,1P( 98.11.30 1:44 PM yW 18 DMC-J7R 12 TROUBLE SHOOTING :

37、ATT Autoadjustment menu : ATT adjustment error (adjustment value output) : During ATT autoadjustment Adjustment error Normal end : ATT adjustment normal end (adjustment value output) : Continuous playback (high reflection) : Continuous playback (low reflection) PLAY PLAY A U T O 2 ATT Autoadjustment

38、 A D J . O K A D J . N G S Q # # # # A P # # # # A T 2 * When the STOP button is pressed in specific menu, the TEST MODE STOP state is set. * represent the adjustment number as follows. 0 0 : Innermost periphery move 0 3 : Pit section tracking ATT setting 0 4 : Pit section focus ATT setting 0 6 : Ex

39、ternal periphery move(low reflection only) 0 7 : TCRS ATT setting (low reflection only) 0 8 : Groove section tracking ATT setting (low reflection only) 0 9 : Groove section focus ATT setting(low reflection only) : Temperature code displayATT manual adjustment menu : Temperature code display $ $ : Te

40、mperature code : Laser ON (Play Power) PLAY M A N U 2 ATT Manual Adjustment T M P $ $ L O N P L O N P L O N R SKIP UPS approx: 0.58mWapprox: 8.0mWapprox: 5.6mW KIP DOWN * In laser ON state (without disc) the laser power is changed as follows if the BASS key is pressed (record/playback machine only).

41、 L O N M Play powerMax. power BASSBASS BASS Record power : Continuous playback menu : Continuous playback (pit section) : Continuous playback (groove section) # # # # : Address : Continuous playback (pit section) : Continuous playback (groove section) # # # # : Address PLAY T P L A Y Continuous Play

42、back S Q # # # # A P # # # # : Continuous playback (pit section) : Continuous playback (groove section) # # # # : Address : High reflection pit section B-ATT (focus) setting : High reflection groovesection B-ATT (focus) setting : ATT setting P-MODE S Q # # # # A P # # # # H B L B * When the STOP but

43、ton is pressed in specific menu, the TEST MODE STOP state is set. * In the start address set state the start address changes as follows when the DISP key is pressed. 0 0 5 0 H (initial value)0 3 C 0 H0 7 0 0 H0 8 A 0 H A d 0 0 5 0A d 0 3 C 0 DISP DISP A d 0 7 9 0 DISPDISP A d 0 8 A 0 * In the start

44、address setting state the start address change digit changes when the BASS key is pressed. 1st digit (initial value)2nd digit3rd digit A d 0 0 5 0A d 0 0 5 0 BASS BASS A d 0 0 5 0 BASS * In the continuous playback state the number of jump lines changes as follows shown the BASS key is pressed. 1 (in

45、itial value)10400 1 T R 1 0 T R BASS BASS 4 0 0 T R BASS Continuous playback from current pickup position : Continuous playback menu : Start address setting DISP T P L A Y A d 0 0 5 0 PLAY S Q # # # # A P # # # # Continuous playback from any address * In the start address set state the value of sele

46、ction digit changes in the range of 0h to Fh when the SKIP UP/DOWN key is pressed. * In the continuous playback state the state is changed to ATT manual adjustment B-ATT setting state when the P-MODE key is pressed. * In the continuous playback state, jump ocurs in the specified number external peri

47、phery direction. If the key is held down, jump occurs continuously with 100 ms period. DMC-J7R(K) COVER1,1P( 98.11.30 1:44 PM yW 19 DMC-J7R 13 TROUBLE SHOOTING : Error history display menu : Error history 0 display : Error code : Error history 1 display : Error code : Error history 2 display : Error code : Error history 3 display : Error code : Error history 4 display : Error code : Error history 5 display : Error code : Error history 6 display : Error code : Error history 7 display : Error code : Error history 8 display : Error code : Error history 9 display : Error co