Jvc-KDG-161-Service-Manual(1) 电路图 维修手册.pdf

《Jvc-KDG-161-Service-Manual(1) 电路图 维修手册.pdf》由会员分享，可在线阅读，更多相关《Jvc-KDG-161-Service-Manual(1) 电路图 维修手册.pdf（68页珍藏版）》请在收音机爱好者资料库上搜索。

1、SERVICE MANUAL COPYRIGHT 2005 Victor Company of Japan, Limited No.MA233 2005/12 CD RECEIVER MA233200512 KD-G120,KD-G120R,KD-G123, KD-G124,KD-G125,KD-G126, KD-G161,KD-G162 Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) TABLE OF CONTENTS 1PRECAUTIONS . . . . .

2、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9 3DISASSEMBLY . . . .

3、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13 5TRO

4、UBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14 Area suffix J - Northern America KD-G120,KD-G120R Area suffix E - Southern Europe EX - Northern Europe EY - Eastern Europe EU - Turkey KD-G161,KD-G162 A

5、rea suffix UI - India KD-G123,KG-G124 Area suffix UT - Taiwan UH - Thailand UN - Indonesia U - Other Areas KD-G125,KD-G126 KD-G125 KD-G126 KD-G120RKD-G120 KD-G123KD-G124 KD-G125KD-G126 KD-G161KD-G162 KD-G162KD-G161 RadioFans.CN 收音机爱 好者资料库 1-2 (No.MA233) SPECIFICATION KD-G120R/KD-G120 Design and spec

6、ifications are subject to change without notice. AUDIO AMPLIFIER SECTION Power Output17 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 RangeBass10 dB at 100 Hz Treble10 dB at 10 kHz Frequency Response40 Hz

7、to 20 000 Hz Line-Out Level/Impedance2.0 V/20 k load (full scale) Output Impedance1 k Subwoofer-Out Level/Impedance2.0 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 5

8、0 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 kHz) 65 dB Frequency Response40 Hz to 15 000

9、Hz Stereo Separation35 dB Capture Ratio1.5 dB AM TunerSensitivity20 V Selectivity35 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 Range96 dB Signal

10、-to-Noise Ratio98 dB Wow and FlutterLess than measurable limit GENERAL Power RequirementOperating VoltageDC 14.4 V (11 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 150 mm (7-3/16

11、 2-1/16 5-15/16) Panel Size (approx.)188 mm 58 mm 11 mm (7-7/16 2-5/16 7/16) Mass (approx.)1.2 kg (2.6 lbs) (excluding accessories) RadioFans.CN 收音机爱 好者资料库 (No.MA233)1-3 KD-G124/KD-G123 Design and specifications are subject to change without notice. AUDIO AMPLIFIER SECTION Maximum Power OutputFront5

12、0 W per channel Rear50 W per channel Continuous Power Output (RMS) Front19 W per channel into 4 , 40 Hz to 20 000 Hz at no more than 0.8% total har- monic distortion. Rear19 W per channel into 4 , 40 Hz to 20 000 Hz at no more than 0.8% total har- monic distortion. Load Impedance4 (4 to 8 allowance)

13、 Tone Control RangeBass10 dB at 100 Hz Treble10 dB at 10 kHz Frequency Response40 Hz to 20 000 Hz Signal to Noise Ratio70 dB Line-Out Level/Impedance2.0 V/20 k load (full scale) Output Impedance1 k Subwoofer-Out Level/Impedance2.0 V/20 k load (full scale) TUNER SECTION Frequency RangeFM87.5 MHz to 1

14、08.0 MHz AM531 kHz to 1 602 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 Capture Ratio1.5 dB AM TunerSensitivity20 V Selectivity35 dB CD PLAY

15、ER 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 Range96 dB Signal-to-Noise Ratio98 dB Wow and FlutterWow and Flutter: Less than measurable limit GENERAL Power

16、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 150 mm Panel Size (approx.)188 mm 58 mm 11 mm Mass (approx.)1.2 kg (excluding accessories) RadioFans.CN 收

17、音机爱 好者资料库 1-4 (No.MA233) KD-G126/KD-G125 Design and specifications are subject to change without notice. AUDIO AMPLIFIER SECTION Maximum Power OutputFront50 W per channel Rear50 W per channel Continuous Power Output (RMS) Front19 W per channel into 4 , 40 Hz to 20 000 Hz at no more than 0.8% total h

18、ar- monic distortion. Rear19 W per channel into 4 , 40 Hz to 20 000 Hz at no more than 0.8% total har- monic distortion. Load Impedance4 (4 to 8 allowance) Tone Control RangeBass10 dB at 100 Hz Treble10 dB at 10 kHz Frequency Response40 Hz to 20 000 Hz Signal to Noise Ratio70 dB Line-Out Level/Imped

19、ance2.0 V/20 k load (full scale) Output Impedance1 k Subwoofer-Out Level/Impedance2.0 V/20 k load (full scale) 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 Quieting Sensitivity16.3 dBf (1.8 V/75 ) Alternate Channel S

20、electivity (400 kHz) 65 dB Frequency Response40 Hz to 15 000 Hz Stereo Separation35 dB Capture Ratio1.5 dB AM TunerSensitivity20 V Selectivity35 dB CD PLAYER SECTION TypeCompact disc player Signal Detection SystemNon-contact optical pickup (semiconductor laser) Number of channels2 channels (stereo)

21、Frequency Response5 Hz to 20 000 Hz Dynamic Range96 dB Signal-to-Noise Ratio98 dB Wow and FlutterLess than measurable limit 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)Install

22、ation Size (approx.)182 mm 52 mm 150 mm Panel Size (approx.)188 mm 58 mm 11 mm Mass (approx.)1.2 kg (excluding accessories) (No.MA233)1-5 KD-G162/KD-G161 Design and specifications are subject to change without notice. AUDIO AMPLIFIER SECTION Maximum Power OutputFront45 W per channel Rear45 W per cha

23、nnel Continuous Power Output (RMS) Front17 W per channel into 4 , 40 Hz to 20 000 Hz at no more than 0.8% total har- monic distortion. Rear17 W per channel into 4 , 40 Hz to 20 000 Hz at no more than 0.8% total har- monic distortion. Load Impedance4 (4 to 8 allowance) Tone Control RangeBass10 dB at

24、100 Hz Treble10 dB at 10 kHz Frequency Response40 Hz to 20 000 Hz Signal-to-Noise Ratio70 dB Line-Out Level/Impedance2.0 V/20 k load (full scale) Output Impedance1 k TUNER SECTION Frequency RangeFM87.5 MHz to 108.0 MHz AM(MW) 522 kHz to 1 620 kHz (LW) 144 kHz to 279 kHz FM TunerUsable Sensitivity11.

25、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 Capture Ratio1.5 dB MW TunerSensitivity20 V Selectivity35 dB LW TunerSensitivity50 V CD PLAYER SECTION TypeCompact disc player Si

26、gnal Detection SystemNon-contact optical pickup (semiconductor laser) Number of Channels2 channels (stereo) Frequency Response5 Hz to 20 000 Hz Dynamic Range96 dB Signal-to-Noise Ratio98 dB Wow and FlutterLess than measurable limit GENERAL Power RequirementOperating VoltageDC 14.4 V (11 V to 16 V al

27、lowance) Grounding SystemNegative ground Allowable Operating Temperature0C to +40C Dimensions (W H D)Installation Size (approx.)182 mm 52 mm 150 mm Panel Size (approx.)188 mm 58 mm 11 mm Mass (approx.)1.2 kg (excluding accessories) 1-6 (No.MA233) SECTION 1 PRECAUTIONS 1.1Safety Precautions ! Burrs f

28、ormed during molding may be 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.MA233)1-7 1.2Preventing st

29、atic electricity Electrostatic 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 elect

30、ricity Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as CD players. 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 s

31、heet) or an iron plate over 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, b

32、oth sides of the laser diode 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

33、destroy the laser diode. 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

34、details, refer to the replacement 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 possi

35、ble to adjust the semi-fixed 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 CD pickup unit. Apply solder to the short land before the flexible wire is disconnected from the connector on the

36、CD pickup unit. (If the flexible wire is disconnected without applying solder, the CD pickup may be destroyed by static electricity.) In the assembly, be sure to remove solder from the short land after connecting the flexible wire. 1M (caption) Anti-static wrist strap Conductive material (conductive

37、 sheet) or iron plate Wires Push switch Pickup Base board Pickup Connector Flexible wire Frame CD mechanism assembly 1-8 (No.MA233) 1.5Important for laser products 1.CLASS 1 LASER PRODUCT 2.DANGER : Invisible laser radiation when open and inter lock failed or defeated. Avoid direct exposure to beam.

38、 3.CAUTION : There are no serviceable parts inside the Laser Unit. Do not disassemble the Laser Unit. Replace the complete Laser Unit if it malfunctions. 4.CAUTION : The CD,MD and DVD player uses invisible laser radiation and is equipped with safety switches which prevent emission of radiation when

39、the drawer is open and the safety interlocks have failed or are defeated. It is dangerous to defeat the safety switches. 5.CAUTION : If safety switches malfunction, the laser is able to function. 6.CAUTION : Use of controls, adjustments or performance of procedures other than those specified here in

40、 may result in hazardous radiation exposure. REPRODUCTION AND POSITION OF LABELS ! Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check. WARNING LABEL CAUTION : Visible and Invisible laser radiation when open and interlock failed or defeated.

41、 AVOID DIRECT EXPOSURE TO BEAM. (e) VARNING : Synlig och osynling laserstrlning nr den ppnas och sprren r urkopplad. Betrakta ej strlen. (s) VARO : Avattaessa ja suojalukitus ohitettuna tai viallisena olet alttiina nkyvlle ja nkymttmlle lasersteilylle. Vlt steen kohdistumista suoraan itseesi. (f) AD

42、VARSEL : Synlig og usynlig laserstrling nr maskinen er ben eller interlocken fejeler. Undg direkte eksponering til strling. (d) CLASS 1 LASER PRODUCT (No.MA233)1-9 SECTION 2 SPECIFIC SERVICE INSTRUCTIONS 2.1CD mechanism For the CD mechanism, please refer mechanism manual TN2007-1001 (No. MY003). 1-1

43、0 (No.MA233) SECTION 3 DISASSEMBLY 3.1Main body section 3.1.1Removing the front panel assembly (See Fig.1) (1) Push the detach button in the lower right part of the front panel assembly and remove the front panel assembly. Fig.1 3.1.2Removing the bottom cover (See Fig.2) (1) Turn the main body up si

44、de down. (2) Insert a screwdriver under the joints to release the two joints a on the left side, two joints b on the right side and joint c on the back side of the main body, then remove the bottom cover from the main body. Note: When releasing the joints using a screwdriver, do not damage the main

45、board. Fig.2 3.1.3Removing the front chassis assembly (See Fig.3) Remove the front panel assembly and bottom cover. (1) Remove the two screws A on the both sides of the main body. (2) Release the two joints d and two joints e on the both sides of the main body, then remove the front chassis assembly

46、 toward the front. Fig.3 Detach button Front panel assembly Bottom cover Joint b Joint b Joint c Joint a Joint a Joint d Front chassis assembly A Joint e Joint dJoint e (No.MA233)1-11 3.1.4Removing the side panel (See Fig.4) Reference: Remove the front panel assembly as required. (1) Remove the scre

47、w B and two screws C attaching the side panel on the left side of the main body. (2) Remove the side panel from the main body. Fig.4 3.1.5Removing the rear bracket (See Fig.5) Remove the bottom cover. (1) Remove the three screws D, three screws E and two screws F attaching the rear bracket on the ba

48、ck side of the main body. (2) Remove the rear bracket. 3.1.6Removing the main board (See Figs.5 and 6) Remove the front panel assembly, bottom cover and side pan- el. Reference: Remove the front chassis assembly as required. (1) Remove the three screws D attaching the rear bracket on the back side o

49、f the main body. (See Fig.5.) (2) Remove the two screws G attaching the main board. (See Fig.6.) (3) Disconnect the connector CN501 on the main board from the main body and take out the main board with the rear bracket. (See Fig.6.) Reference: Remove the rear bracket from the main body as required. (See