Kenwood-DVK-751-Service-Manual 电路图 维修手册.pdf

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1、In compliance with Federal Regulations, following are reproduc- tions of labels on, or inside the product relating to laser product safety. KENWOOD-Crop. certifies this equipment conforms to DHHS Regulations No. 21 DFR 1040. 10, Chapter 1, Subchapter J. DANGER : Laser radiation when open and interlo

2、ck defeated. AVOID DIRECT EXPOSURE TO BEAM Caution : No connection of ground line if disassemble the unit. Please connect the ground line on rear panel, PCBs, Chassis and some others. NOTE : Please replace the mechanism PCB (W02-266x-05) with new one, if it is malfunction. CD/VIDEO-CD/DVD PLAYER DV-

3、K751/S701 SERVICE MANUAL 1998-8/B51-5468-00 (K/K) 3547 Illust. is DV-K751. * Refer to parts list on page 33. 73 ? ? 4 ? ? 1 MIC 2MIC 1 POWER - ON OFF ON / STANDBY SHUTTLE 0 w? ? 8/ MIC LEVEL MIC 1MIC 2 FL DISPLAY (PCM/BIT STREAM) COAXIALOPTICAL DIGITAL OUTPUT CENTER S VIDEO OUTPUT VIDEO OUTPUT MIX L

4、INE OUTPUT SUB WOOFER SURROUNDFRONT 6CH. OUTPUT L R 1 2 SYSTEM CONTROL Knob (K29-6835-22) Indicator (B12-0311-04) AC power cord * (E30-) Phono jack (E63-1064-05) Phono jack (E63-1052-05) Power cord bushing (J42-0083-05) Phono jack (E11-0366-05) Knob (K27-2249-04) Knob (K29-6835-22) Phono jack (E63-0

5、128-05) Phono jack (E63-0122-05) Cylindrical receptacle (E56-0014-05) Oscillating module (W02-1114-05) Dressing panel (A21-3728-03) Knob (K29-6677-03) Panel * (A60-) Dressing panel (A21-3627-12) Miniature phone jack (E11-0188-05) Knob (K29-6679-03) Front glass (B10-2386-12) Knob (K29-6835-22) Knob (

6、K29-6945-04) DV-K751(K) COVER1,1( 98.12.12 15:04 yW 2 RadioFans.CN 收音机爱 好者资料库 Audio (E30-0505-05)(E30-1427-05) (E30-2365-05) (E30-2733-05) cord (Red, White) . (3) Remote (A70-1231-05): RC-D0703: M2T1E1 (A70-1243-05): RC-D0704: K (A70-1244-05): RC-D0706: M1C1 Battery cover (A09-1105-05) control unit.

7、 (1)Batteries (R6/AA) . (2) Digital cord (Orange). (1) Video cord (Yellow). (1) System control cord . (1) AC (E03-0115-05) plug adaptor . (1) Use to adapt the plug on the power cord to the shape of the wall outlet. (Accessory only for regions where use is necessary.) DV-K751/S701 2 CONTENTS / ACCESS

8、ORIES CONTENTS / ACCESSORIES .2 CAUTIONS.3 CONTROLS .4 BLOCK DIAGRAM .8 CIRCUIT DESCRIPTION.9 ADJUSTMENT. 10 PARTS DESCRIPTIONS .12 PC BOARD .13 SCHEMATIC DIAGRAM .17 EXPLODED VIEW .30 PARTS LIST.33 SPECIFICATIONS .43 Contents Accessories DV-K751(K) COVER1,1( 98.12.12 15:04 yW 3 RadioFans.CN 收音机爱 好者

9、资料库 DV-K751/S701 3 CAUTIONS Operation to reset The microprocessor may fall into malfunction (impossibility to operate erroneous display, etc.) when the power cord is unplugged while power is ON or due to an external factor. In this case, execute the following procedure to reset the microprocessor an

10、d return it to normal condi- tion. Please note that resetting the microprocessor clears the contents stored in, it returns the microprocessor to the condition when it left the factory. Perform the following operation. 1 Press the POWER key to the ON position. 2 Press the ON/STANDBY () key to ON. 3 W

11、ait for a few seconds to ensure that the display shows “NO DISC”. 4 While holding the 7 key, press and hold the ON/STANDBY () key until “INITIAL OK!” appears. N OD I S C Note related to transportation and move- ment Before transporting or moving this unit, be sure to remove any disc from it and carr

12、y out the following operation. 1. Press the POWER key to the ON position. 2. Press the ON/STANDBY () key to ON. 3. Wait a few seconds and verify that the display shown appears. 4. Set the POWER key to OFF. Operation to reset The microprocessor may fall into malfunction (impossibility to operate erro

13、neous display, etc.) when the power cord is unplugged while power is ON or due to an external factor. In this case, execute the following procedure to reset the microprocessor and return it to normal condi- tion. Please note that resetting the microprocessor clears the contents stored in, it returns

14、 the microprocessor to the condition when it left the factory. Perform the following operation. 1 Press the MAIN POWER key to the ON position. 2 Press the REMOTE POWER key to ON. 3 Wait for a few seconds to ensure that the display shows “NO DISC”. 4 While holding the 7 key, press and hold the REMOTE

15、 POWER key until “INITIAL OK!” appears. N OD I S C Note related to transportation and move- ment Before transporting or moving this unit, be sure to remove any disc from it and carry out the following operation. 1. Press the MAIN POWER key to the ON position. 2. Press the REMOTE POWER key to ON. 3.

16、Wait a few seconds and verify that the display shown appears. 4. Set the MAIN POWER key to OFF. WITH ON/STANDBY KEY WITH REMOTE POWER KEY DV-K751(K) COVER1,1( 98.12.12 15:04 yW 6 RadioFans.CN 收音机爱 好者资料库 DV-K751/S701 4 CONTROLS 73 4 1 MIC 2MIC 1 POWER - ON OFF ON / STANDBY SHUTTLE 0 w8/ MIC LEVEL MIC

17、 1MIC 2 FL DISPLAY 16832457 0!#$% DVD VCDCD P.B.C.DOLBYDIGITALRANDOMPROG.STEREO ANGLE PCM REPEAT ALL LR TITLE CHAPTER TRACKAB ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? KARAOKE 9 POWER - ON OFF Display / Main unit (DV-K751) L, STEREO, R indicators Character information display Opera

18、tion indicators 3 :Play 8 :Pause DVD, VCD, CD indicators Special playback related indicators Display VCD and CD related indicators DVD related indicators 1 ON/STANDBY () key Press to turn power of the unit from on to standby or vice versa. 2 Standby indicator 3 Remote control sensor 4 FL DISPLAY key

19、 5 DVD indicator Lights when a DVD disc is played. 6 Disc tray 7 Open/Close (0) key 8 SHUTTLE (1, ) keys 9 POWER (POWER) key Press to turn the power of the unit between the standby and off modes. 0 MIC 1 and MIC 2 jacks ! MIC 1 level up: down : MIC 2 level up: down : # Skip down (4) / up () keys $ S

20、till/Pause () key % Stop (7) key Play (3) key * The panel indications are variable depending on the area where the nuit is marketed. About the standby mode While the standby indicator is lit, a small amount of power is supplied to the system to back up the memory. This is called th standby mode. Und

21、er that condition, the system can be turned ON by the remote control unit. 73 4 1 POWER - ON OFF ON / STANDBY SHUTTLE 0 w8/ TEXT DISPLAY ALL INFO. TITLE SEARCH REPEAT FL DISPLAY 16832457 $% 44.1, 48 kHz) 4 fs (Sampling frequency; 96 kHz) Audio section Frequency response Sampling frequency; 44.1 kHz

22、(CD only).4 Hz 20 kHz Sampling frequency; 48 kHz .4 Hz 22 kHz Sampling frequency; 96 kHz .4 Hz 44 kHz Signal to noise ratio (CD only) .More than 105 dB Dynamic range (CD only) .More than 97 dB Total harmonic distortion (CD only) .Less than 0.003 % (1 kHz) Channel separation (CD only) . More than 90

23、dB (1 kHz, MIX LINE OUTPUT) Wow and flutter (CD only) . Below measurable limit (0.001 % W. PEAK) Analog output level/impedance 2ch . 1.2 Vrms / 330 (mic on:1.2 Vrms / 330 ) 5.1ch . 1.2 Vrms / 330 (compression off:max 3.4 Vrms) Digital output level/impedance COAXIAL . 0.5 Vp-p / 75 OPTICAL. -21 dBm -

24、15 dBm (Wave length 660 nm) Microphone Input sensitivity/impedance . 6 mV / 24 k (MIC 1, 2) Video Section Video output format. NTSC/PAL Video compression VCD. MPEG-1 DVD. MPEG-2 Composite video output level . 1 Vp-p (75 load, sync. negative) S-video output level (Y-signal). 1 Vp-p (75 load, sync. ne

25、gative) (C-signal) NTSC . 0.286 Vp-p (75 ) PAL . 0.300 Vp-p (75 ) Horizontal resolution .More than 500 lines Video signal to noise ratio.More than 62 dB General Power consumption . 35 W Dimensions. W: 400 mm(15-3/4”) H: 106 mm(4-3/16”) D: 377 mm (14-13/16”) Weight (net). 4.5 kg (9.9 lb) Type System.

26、 DVD video player system Signal read system . Semiconductor laser D/A Conversion Section D/A conversion. 24 Bit Oversampling . 8 fs (Sampling frequency; 44.1, 48 kHz) 4 fs (Sampling frequency; 96 kHz) Audio section Frequency response Sampling frequency; 44.1 kHz (CD only) . 4 Hz 20 kHz Sampling freq

27、uency; 48 kHz. 4 Hz 22 kHz Sampling frequency; 96 kHz. 4 Hz 44 kHz Signal to noise ratio (CD only) . More than 105 dB Dynamic range (CD only) . More than 97 dB Total harmonic distortion (CD only) .Less than 0.003 % (1 kHz) Channel separation (CD only) . More than 90 dB (1 kHz, MIX LINE OUTPUT) Wow a

28、nd flutter (CD only) . Below measurable limit (0.001 % W. PEAK) Analog output level/impedance 2ch . 1.2 Vrms / 330 Digital output level/impedance COAXIAL . 0.5 Vp-p / 75 OPTICAL . -21 dBm -15 dBm (Wave length 660 nm) Video Section Video output format . NTSC Video compression VCD. MPEG-1 DVD . MPEG-2

29、 Composite video output level . 1 Vp-p (75 load, sync. negative) S-video output level (Y-signal) . 1 Vp-p (75 load, sync. negative) (C-signal) NTSC . 0.286 Vp-p (75 ) Horizontal resolution . More than 500 lines Video signal to noise ratio . More than 62 dB General Power consumption. 35 W Dimensions

30、. W:400 mm(15-3/4”) H: 106 mm(4-3/16”) D: 377 mm (14-13/16”) Weight (net) . 4.5 kg (9.9 lb) DV-K751(En/M) DV-S701(En/K) DV-K751(K) COVER1,1( 98.12.12 15:04 yW 4 DV-K751/S701 SPECIFICATIONS 14-6,Dogenzaka 1-chome, Shibuya-ku, Tokyo, 150-8501 Japan KENWOOD SERVICE CORPORATION P.O BOX 22745, 2201 East

31、Dominguez St., Long Beach, CA 90801-5745, U.S.A. KENWOOD ELECTRONICS CANADA INC. 6070 Kestrel Road, Mississauga, Ontario, Canada L5T 1S8 KENWOOD ELECTRONICS LATIN AMERICA S.A. P.O BOX 55-2791, Piso 6 plaza Chase, Cl. 47 y Aquilino de la Guardia Panama, Republic de Panama KENWOOD ELECTRONICS BRASIL L

32、TDA. Av Indianpolis, 628, 04062-001 Planalto Paullsta So Paulo-SP-Brasil KENWOOD ELECTRONICS U.K. LIMITED KENWOOD House, Dwight Road, Watford, Herts., WD1 8EB., United Kingdom KENWOOD ELECTRONICS BELGUM N.V. Meachelsesteenweg 418, B-1930 Zaventem, Belgium KENWOOD ELECTRONICS DEUTSCHLAND GMBH Rembrck

33、er Str. 15, 63150 Heusenstamm, Germany KENWOOD ELECTRONICS FRANCE S.A. 13 Boulevard Ney, 75018 Paris, France KENWOOD ELECTRONICS ITALIA S.p.A. Via G. Sirtori, 7/9 20129, Milano, ltaly KENWOOD IBRICA S.A. Bolivia, 239-08020 Barcelona, Spain KENWOOD ELECTRONICS AUSTRALIA PTY. LTD. (A.C.N. 001499 074)

34、P.O Box 504, 8 Figtree Drive, Australia Centre, Homebush, N.S.W. 2140, Australia KENWOOD 44.1, 48 kHz) 4 fs (Sampling frequency; 96 kHz) Audio section Frequency response Sampling frequency; 44.1 kHz (CD only) . 4 Hz 20 kHz Sampling frequency; 48 kHz. 4 Hz 22 kHz Sampling frequency; 96 kHz. 4 Hz 44 k

35、Hz Signal to noise ratio (CD only) . More than 105 dB Dynamic range (CD only) . More than 97 dB Total harmonic distortion (CD only) .Less than 0.003 % (1 kHz) Channel separation (CD only) . More than 90 dB (1 kHz, MIX LINE OUTPUT) Wow and flutter (CD only) . Below measurable limit (0.001 % W. PEAK)

36、Analog output level/impedance 2ch . 1.2 Vrms / 330 5.1ch . 1.2 Vrms / 330 (compression off:max 3.4 Vrms) Digital output level/impedance COAXIAL . 0.5 Vp-p / 75 OPTICAL . -21 dBm -15 dBm (Wave length 660 nm) Video Section Video output format . PAL Video compression VCD. MPEG-1 DVD . MPEG-2 Composite

37、video output level . 1 Vp-p (75 load, sync. negative) S-video output level (Y-signal) . 1 Vp-p (75 load, sync. negative) (C-signal) PAL . 0.300 Vp-p (75 ) Horizontal resolution . More than 500 lines Video signal to noise ratio. More than 62 dB General Power consumption. 35 W Dimensions . W:400 mm(15-3/4”) H: 106 mm(4-3/16”) D: 377 mm (14-13/16”) Weight (net) . 4.5 kg (9.9 lb) KENWOOD follows a poli