Jvc-KDG-244-UI-Service-Manual(1) 电路图 维修手册.pdf

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1、SERVICE MANUAL COPYRIGHT 2008 Victor Company of Japan, Limited No.MA372 2008/5 CD RECEIVER MA37220085 SERVICE MANUAL KD-G140J, KD-G240J, KD-G244UI, KD-G245U, KD-G245UN, KD-G245UT, KD-G245UH, KD-G248UF, KD-G341E, KD-G341EX, KD-G341EY, KD-G341EU, KD-G342E, KD-G342EX, KD-G342EY,KD-G342EU, KD-G343E, KD-

2、G343EX, KD-G343EY, KD-G343EU, KD-G347SEE, KD-G347BEE, KD-G394UI, KD-G395U, KD-G395UN,KD-G395UT, KD-G395UH, KD-G396U, KD-G396UN, KD-G396UT, KD-G396UH, KD-G398UF,KD-G396SUI, KD-G299UR COPYRIGHT 2008 Victor Company of Japan, Limited Lead free solder used in the board (material : Sn-Ag-Cu, melting point

3、 : 219 Centigrade) Lead free solder used in the board (material : Sn-Cu, melting point : 230 Centigrade) TABLE OF CONTENTS 1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8 2SPECIFIC SERVIC

4、E INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12 4ADJUSTMENT . . .

5、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25 KD-G14

6、0/KD-G240 KD-G140 KD-G240 KD-G299 only for only for only for only for KD-G240/KD-G341/KD-G342 KD-G394/KD-G395 KD-G347 only for KD-G347KD-G396/KD-G398 KD-G299 KD-G299 KD-G341 KD-G342 KD-G343 KD-G343/KD-G347/KD-G394 KD-G395/KD-G396/KD-G398 RadioFans.CN 收音机爱 好者资料库 1-2 (No.MA372) SPECIFICATION KD-G140/K

7、D-G240 Design and specifications are subject to change without notice. Audio amplifier section Power Output20 W RMS 4 Channels at 4 and or = 1% THD+N Signal to Noise Ratio80 dBA (reference: 1 W into 4 ) Load Impedance4 (4 to 8 allowance) Tone Control RangeBass12 dB at 60 Hz Mid-range12 dB at 1 kHz T

8、reble12 dB at 7.5 kHz Frequency Response40 Hz to 20 000 Hz Line-Out Level/Impedance2.5 V/20 k load (full scale) Output Impedance1 k Subwoofer-Out Level/Impedance2.5 V/20 k load (full scale) Tuner section Frequency RangeFM87.5 MHz to 107.9 MHz (with channel interval set to 100 kHz or 200 kHz) 87.5 MH

9、z to 108.0 MHz (with channel interval set to 50 kHz) AM530 kHz to 1 710 kHz (with channel interval set to 10 kHz) 531 kHz to 1 602 kHz (with channel interval set to 9 kHz) FM TunerUsable Sensitivity11.3 dBf (1.0 V/75 ) 50 dB Quieting Sensitivity16.3 dBf (1.8 V/75 ) Alternate Channel Selectivity (400

10、 kHz) 65 dB Frequency Response40 Hz to 15 000 Hz Stereo Separation35 dB AM TunerSensitivity/Selectivity20 V/35 dB CD player section TypeCompact disc player Signal Detection SystemNon-contact optical pickup (semiconductor laser) Number of channels2 channels (stereo) Frequency Response5 Hz to 20 000 H

11、z Dynamic Range93 dB Signal-to-Noise Ratio98 dB Wow and FlutterLess than measurable limit MP3 Decoding Format (for KD-G240)Max. Bit Rate MPEG1/2 Audio Layer 3 320 kbps WMA (Windows Media Audio) Decoding Format (for KD-G240) Max. Bit Rate192 kbps General Power RequirementOperating VoltageDC 14.4 V (1

12、1 V to 16 V allowance) Grounding SystemNegative ground Allowable Operating Temperature0C to +40C (32F to 104F) Dimensions (W H D)Installation Size (approx.)182 mm 52 mm 160 mm (7-3/16” 2-1/16” 6-5/16”) Panel Size (approx.)188 mm 58 mm 5 mm (7-7/16” 2-5/16” 1/4”) Mass (approx.)1.3 kg (2.9 lbs) (exclu

13、ding accessories) RadioFans.CN 收音机爱 好者资料库 (No.MA372)1-3 KD-G244/KD-G245/KD-G248/KD-G394/KD-G395/KD-G396/KD-G398 Design and specifications are subject to change without notice. Audio amplifier section Maximum Power Output: Front/Rear50 W per channel Continuous Power Output (RMS): Front/Rear19 W per c

14、hannel into 4 40 Hz to 20 000 Hz at no more than 0.8% total harmonic distortion. Load Impedance4 (4 to 8 allowance) Tone Control RangeBass12 dB at 60 Hz Mid-range12 dB at 1 kHz Treble12 dB at 7.5 kHz Frequency Response40 Hz to 20 000 Hz Signal-to-Noise Ratio70 dB Line-Out Level/Impedance (for KD-G39

15、5/KD-G396/KD-G398) 2.5 V/20 k load (full scale) Output Impedance (for KD-G395/KD-G396/KD-G398)1 k Other Terminal (except for KD-G248/KD-G398)AUX (auxiliary) input jack Tuner section Frequency RangeFM87.5 MHz to 108.0 MHz AM531 kHz to 1 602 kHz FM TunerUsable Sensitivity11.3 dBf (1.0 V/75 ) 50 dB Qui

16、eting Sensitivity16.3 dBf (1.8 V/75 ) Alternate Channel Selectivity (400 kHz) 65 dB Frequency Response40 Hz to 15 000 Hz Stereo Separation(for KD-G244/KD-G394) 35 dB (for others) 30 dB AM TunerSensitivity/Selectivity20 V/35 dB CD player section TypeCompact disc player Signal Detection SystemNon-cont

17、act optical pickup (semiconductor laser) Number of channels2 channels (stereo) Frequency Response5 Hz to 20 000 Hz Dynamic Range93 dB Signal-to-Noise Ratio98 dB Wow and FlutterLess than measurable limit MP3 Decoding Format (MPEG1/ 2 Audio Layer 3) (for KD-G395/ KD-G396/KD-G398) Max. Bit Rate320 kbps

18、 WMA (Windows Media Audio) Decoding Format (for KD-G395/ KD-G396/KD-G398) Max. Bit Rate192 kbps General Power RequirementOperating VoltageDC 14.4 V (11 V to 16 V allowance) Grounding SystemNegative ground Allowable Operating Temperature0C to +40C Dimensions (W H D)Installation Size (approx.)182 mm 5

19、2 mm 160 mm Panel Size (approx.)188 mm 58 mm 5 mm Mass (approx.)1.3 kg (excluding accessories) RadioFans.CN 收音机爱 好者资料库 1-4 (No.MA372) KD-G341/KD-G342/KD-G343 Design and specifications are subject to change without notice. Audio amplifier section Maximum Power Output: Front/Rear50 W per channel Conti

20、nuous Power Output (RMS): Front/Rear19 W per channel into 4 40 Hz to 20 000 Hz at no more than 0.8% total harmonic distortion. Load Impedance4 (4 to 8 allowance) Tone Control RangeBass12 dB at 100 Hz Treble12 dB at 10 kHz Frequency Response40 Hz to 20 000 Hz Signal-to-Noise Ratio70 dB Line-Out Level

21、/Impedance2.5 V/20 k load (full scale) Output Impedance1 k Other TerminalAUX (auxiliary) input jack Tuner section Frequency RangeFM87.5 MHz to 108.0 MHz AMMW: 522 kHz to 1 620 kHz LW: 144 kHz to 279 kHz FM TunerUsable Sensitivity11.3 dBf (1.0 V/75 ) 50 dB Quieting Sensitivity16.3 dBf (1.8 V/75 ) Alt

22、ernate Channel Selectivity (400 kHz) 65 dB Frequency Response40 Hz to 15 000 Hz Stereo Separation30 dB MW TunerSensitivity/Selectivity20 V/35 dB LW TunerSensitivity50 V CD player section TypeCompact disc player Signal Detection SystemNon-contact optical pickup (semiconductor laser) Number of channel

23、s2 channels (stereo) Frequency Response5 Hz to 20 000 Hz Dynamic Range93 dB Signal-to-Noise Ratio98 dB Wow and FlutterLess than measurable limit MP3 Decoding Format (MPEG1/2 Audio Layer 3) Max. Bit Rate320 kbps WMA (Windows Media Audio) Decoding Format Max. Bit Rate192 kbps General Power Requirement

24、Operating VoltageDC 14.4 V (11 V to 16 V allowance) Grounding SystemNegative ground Allowable Operating Temperature0C to +40C Dimensions (W H D)Installation Size (approx.)182 mm 52 mm 160 mm Panel Size (approx.)188 mm 58 mm 13 mm Mass (approx.)1.3 kg (excluding accessories) (No.MA372)1-5 KD-G347 Des

25、ign and specifications are subject to change without notice. Audio amplifier section Maximum Power Output: Front/Rear50 W per channel Continuous Power Output (RMS): Front/Rear19 W per channel into 4 40 Hz to 20 000 Hz at no more than 0.8% total harmonic distortion. Load Impedance4 (4 to 8 allowance)

26、 Tone Control RangeBass12 dB at 100 Hz Treble12 dB at 10 kHz Frequency Response40 Hz to 20 000 Hz Signal-to-Noise Ratio70 dB Other TerminalAUX (auxiliary) input jack Tuner section Frequency RangeFM1/287.5 MHz to 108.0 MHz FM365.00 MHz to 74.00 MHz AMMW: 522 kHz to 1 620 kHz LW: 144 kHz to 279 kHz FM

27、 TunerUsable Sensitivity11.3 dBf (1.0 V/75 ) 50 dB Quieting Sensitivity16.3 dBf (1.8 V/75 ) Alternate Channel Selectivity (400 kHz) 65 dB Frequency Response40 Hz to 15 000 Hz Stereo Separation30 dB MW TunerSensitivity/Selectivity20 V/35 dB LW TunerSensitivity50 V CD player section TypeCompact disc p

28、layer Signal Detection SystemNon-contact optical pickup (semiconductor laser) Number of channels2 channels (stereo) Frequency Response5 Hz to 20 000 Hz Dynamic Range93 dB Signal-to-Noise Ratio98 dB Wow and FlutterLess than measurable limit MP3 Decoding Format (MPEG1/2 Audio Layer 3) Max. Bit Rate320

29、 kbps WMA (Windows Media Audio) Decoding Format Max. Bit Rate192 kbps General Power RequirementOperating VoltageDC 14.4 V (11 V to 16 V allowance) Grounding SystemNegative ground Allowable Operating Temperature0C to +40C Dimensions (W H D)Installation Size (approx.)182 mm 52 mm 160 mm Panel Size (ap

30、prox.)188 mm 58 mm 13 mm Mass (approx.)1.3 kg (excluding accessories) 1-6 (No.MA372) KD-G396 Design and specifications are subject to change without notice. AUDIO AMPLIFIER SECTION Maximum Power Output Front/Rear 50 W per channel Continuous Power Output (RMS) Front/Rear 19 W per channel into 4 40 Hz

31、 to 20 000 Hz at no more than 0.8% total harmonic distortion. Load Impedance 4 (4 to 8 allowance) Tone Control Range Bass 12 dB at 60 Hz Mid-range 12 dB at 1 kHz Treble 12 dB at 7.5 kHz Frequency Response 40 Hz to 20 000 Hz Signal-to-Noise Ratio 70 dB Line-Out Level/Impedance 2.5 V/20 k load (full s

32、cale) Output Impedance 1 k Other Terminal AUX (auxiliary) input jack TUNER SECTION Frequency Range FM 87.5 MHz to 108.0 MHz AM 531 kHz to 1 602 kHz FM TunerUsable Sensitivity 11.3 dBf (1.0 V/75 ) 50 dB Quieting Sensitivity 16.3 dBf (1.8 V/75 ) Alternate Channel Selectivity (400 kHz) 65 dB Frequency

33、Response 40 Hz to 15 000 Hz Stereo Separation 30 dB AM TunerSensitivity/Selectivity 20 V/35 dB CD PLAYER SECTION Type Compact disc player Signal Detection System Non-contact optical pickup (semiconductor laser) Number of Channels 2 channels (stereo) Frequency Response 5 Hz to 20 000 Hz Dynamic Range

34、 93 dB Signal-to-Noise Ratio 98 dB Wow and Flutter Less than measurable limit MP3 Decoding Format (MPEG1/2 Audio Layer 3)Max. Bit Rate: 320 kbps WMA (Windows Media Audio) Decoding Format Max. Bit Rate: 192 kbps GENERAL Power Requirement Operating Voltage DC 14.4 V (11 V to 16 V allowance) Grounding

35、System Negative ground Allowable Operating Temperature 0C to +40C Dimensions (W H D) (approx.) Installation Size 178 mm 50 mm 160 mm Panel Size 178 mm 50 mm 17 mm Mass 1.3 kg (excluding accessories) (No.MA372)1-7 KD-G299 Design and specifications are subject to change without notice. Audio amplifier

36、 section Power Output20 W RMS 4 Channels at 4 and or = 1% THD+N Signal to Noise Ratio80 dBA (reference: 1 W into 4 ) Load Impedance4 (4 to 8 allowance) Tone Control RangeBass12 dB at 60 Hz Mid-range12 dB at 1 kHz Treble12 dB at 7.5 kHz Frequency Response40 Hz to 20 000 Hz Line-Out Level/Impedance2.5

37、 V/20 k load (full scale) Output Impedance1 k Subwoofer-Out Level/Impedance2.5 V/20 k load (full scale) Tuner section Frequency RangeFM87.5 MHz to 107.9 MHz (with channel interval set to 100 kHz or 200 kHz) 87.5 MHz to 108.0 MHz (with channel interval set to 50 kHz) AM530 kHz to 1 710 kHz (with chan

38、nel interval set to 10 kHz) 531 kHz to 1 602 kHz (with channel interval set to 9 kHz) FM TunerUsable Sensitivity11.3 dBf (1.0 V/75 ) 50 dB Quieting Sensitivity16.3 dBf (1.8 V/75 ) Alternate Channel Selectivity (400 kHz) 65 dB Frequency Response40 Hz to 15 000 Hz Stereo Separation35 dB AM TunerSensit

39、ivity/Selectivity20 V/35 dB CD player section TypeCompact disc player Signal Detection SystemNon-contact optical pickup (semiconductor laser) Number of channels2 channels (stereo) Frequency Response5 Hz to 20 000 Hz Dynamic Range93 dB Signal-to-Noise Ratio98 dB Wow and FlutterLess than measurable li

40、mit MP3 Decoding Format Max. Bit Rate MPEG1/2 Audio Layer 3 320 kbps WMA (Windows Media Audio) Decoding Format Max. Bit Rate192 kbps General Power RequirementOperating VoltageDC 14.4 V (11 V to 16 V allowance) Grounding SystemNegative ground Allowable Operating Temperature0C to +40C (32F to 104F) Di

41、mensions (W H D)Installation Size (approx.)182 mm 52 mm 160 mm (7-3/16” 2-1/16” 6-5/16”) Panel Size (approx.)188 mm 58 mm 5 mm (7-7/16” 2-5/16” 1/4”) Mass (approx.)1.3 kg (2.9 lbs) (excluding accessories) 1-8 (No.MA372) SECTION 1 PRECAUTION 1.1Safety Precautions ! Burrs formed during molding may be

42、left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of preforming repair of this system. ! Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check. (No.MA372)1-9 1.2Preventing static electricity Electrostat

43、ic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs. 1.2.1 Grounding to prevent damage by static electricity Static electricity in

44、 the work area can destroy the optical pickup (laser diode) in devices such as laser products. Be careful to use proper grounding in the area where repairs are being performed. (1) Ground the workbench Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate o

45、ver it before placing the traverse unit (optical pickup) on it. (2) Ground yourself Use an anti-static wrist strap to release any static electricity built up in your body. (3) Handling the optical pickup In order to maintain quality during transport and before installation, both sides of the laser d

46、iode on the replacement optical pickup are shorted. After replacement, return the shorted parts to their original condition. (Refer to the text.) Do not use a tester to check the condition of the laser diode in the optical pickup. The testers internal power source can easily destroy the laser diode.

47、 1.3Handling the traverse unit (optical pickup) (1) Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit. (2) Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to the re

48、placement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long a time when attaching it to the connector. (3) Handle the flexible cable carefully as it may break when subjected to strong force. (4) It is not possible to adjust the semi-f

49、ixed resistor that adjusts the laser power. Do not turn it. 1.4Attention when traverse unit is decomposed *Please refer to Disassembly method in the text for the pickup unit. Apply solder to the short land before the card wire is disconnected from the connector on the pickup unit. (If the card wire is disconnected without applying solder, the pickup may be destroyed by static electricity.) In the assembly, be sure to remove solder from the short land after connecting the card wire. 1M (caption) Anti-sta