Jvc-KDG-544-UI-Service-Manual(1) 电路图 维修手册.pdf

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1、SERVICE MANUAL COPYRIGHT 2007 Victor Company of Japan, Limited No.MA384 2007/12 CD RECEIVER MA384200712SERVICE MANUAL KD-G541E, KD-G541EX, KD-G541EY, KD-G541EU, KD-G544UI, KD-G545U, KD-G545UN, KD-G545UT, KD-G545UH, KD-G546U, KD-G546UN, KD-G546UT, KD-G546UH, KD-G547EE COPYRIGHT 2007 Victor Company of

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

3、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . .

5、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25 only for KD-G547 only for KD-G541 KD-G547 RadioFans.CN 收音机爱 好者资料库 1-2 (No.MA384) SPECIFICATION KD-G541 Design and specifications are subject to change without notice. AUDIO AMPLIFIER SECTION Maximum Power OutputFront/R

6、ear50 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) Tone Control RangeBass12 dB at 60 Hz Middle12 dB at 1 kHz Treble12 dB at 7.5 kHz Frequency Response40 Hz to 20 000

7、Hz Signal-to-Noise-Ratio70 dB 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) Other TerminalCD changer jack AUX (auxiliary) input jack Steering wheel remote input TUNER SECTION Frequency RangeFM87.5 MHz to 108.0 MHz A

8、M(MW) 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 ) Alternate Channel Selectivity (400 kHz)65 dB Frequency Response40 Hz to 15 000 Hz Stereo Separation30 dB MW TunerSensitivity/Selectivity20 V/35 dB LW Tuner

9、Sensitivity50 V 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-to-Noise Ratio98 dB Wow and FlutterLess than measurable limit MP3 Deco

10、ding Format (MPEG1/2 Audio Layer 3) Max. Bit Rate320 kbps WMA (Windows Media Audio) Decoding Format Max. Bit Rate320 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) (approx

11、.)Installation Size182 mm 52 mm 160 mm Panel Size188 mm 58 mm 13 mm Mass1.4 kg (excluding accessories) RadioFans.CN 收音机爱 好者资料库 (No.MA384)1-3 KD-G544/KD-G545/KD-G546 Design and specifications are subject to change without notice. AUDIO AMPLIFIER SECTION Maximum Power OutputFront/Rear50 W per channel

12、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) Tone Control RangeBass12 dB at 60 Hz Middle12 dB at 1 kHz Treble12 dB at 7.5 kHz Frequency Response40 Hz to 20 000 Hz Signal-to-Noise-R

13、atio70 dB Line-Out Level/Impedance2.5 V/20 k load (full scale) Subwoofer-Out Level/Impedance2.5 V/20 k load (full scale) Output Impedance1 k Other TerminalCD changer jack, AUX (auxiliary) input jack TUNER SECTION Frequency RangeFM87.5 MHz to 108.0 MHz AM531 kHz to 1 602 kHz FM TunerUsable Sensitivit

14、y:11.3 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 AM TunerSensitivity20 V Selectivity35 dB CD PLAYER SECTION TypeCompact disc player Signal Detection SystemNon-contact optical

15、 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 MP3 Decoding Format (MPEG1/2 Audio Layer 3) Max. Bit Rate320 kbps WMA (Windows Media Audio) Decoding Format

16、Max. Bit Rate320 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) (approx.)Installation Size182 mm 52 mm 160 mm Panel Size188 mm 58 mm 6 mm Mass1.4 kg (excluding accessories

17、) RadioFans.CN 收音机爱 好者资料库 1-4 (No.MA384) KD-G547 Design and specifications are subject to change without notice. AUDIO AMPLIFIER SECTION Maximum Power OutputFront/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 harmoni

18、c distortion. Load Impedance4 (4 to 8 allowance) Tone Control RangeBass12 dB at 60 Hz Middle12 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/Impedance2.5 V/20 k load (full scale) Output Impedance1 k Subwoofer-Out Level/Impedance2.5

19、V/20 k load (full scale) Other TerminalAUX (auxiliary) input jack TUNER SECTION Frequency RangeFM1/FM287.5 MHz to 108.0 MHz FM365.00 MHz to 74.00 MHz AM(MW) 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 ) Alte

20、rnate 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 Channels2

21、 channels (stereo) Frequency Response5 Hz to 20 000 Hz Dynamic Range96 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 Rate320 kbps GENERAL Power RequirementOp

22、erating VoltageDC 14.4 V (11 V to 16 V allowance) Grounding SystemNegative ground Allowable Operating Temperature0C to + 40C Dimensions (W H D) (approx.)Installation Size182 mm 52 mm 160 mm Panel Size188 mm 58 mm 13 mm Mass1.4 kg (excluding accessories) (No.MA384)1-5 SECTION 1 PRECAUTION 1.1Safety P

23、recautions ! Burrs formed 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. 1-6 (No.MA

24、384) 1.2Preventing static 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 d

25、amage by static electricity Static electricity in 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 materia

26、l (such as a conductive sheet) 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 a

27、nd before installation, both 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

28、 power source can easily 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 opti

29、cal pickup. For specific 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 f

30、orce. (4) It is not possible 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 pickup unit. Apply solder to the short land before the card wire is disconnected from the

31、 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-static wrist strap Conductive material (conduc

32、tive sheet) or iron plate Wires Push switch Pickup Base board Pickup Connector Flexible wire Frame CD mechanism assembly (No.MA384)1-7 1.5Important for laser products 1.CLASS 1 LASER PRODUCT 2.CAUTION : (For U.S.A.) Visible and/or invisible class II laser radiation when open. Do not stare into beam.

33、 (Others) Visible and/or invisible class 1M laser radiation when open. Do not view directly with optical instruments. 3.CAUTION : Visible and/or invisible laser radiation when open and inter lock failed or defeated. Avoid direct exposure to beam. 4.CAUTION : This laser product uses visible and/or in

34、visible laser radiation and is equipped with safety switches which prevent emission of radiation when 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.

35、CAUTION : Use of controls, adjustments or performance of procedures other than those specified here in may result in hazardous radiation exposure. REPRODUCTION AND POSITION OF LABELS and PRINT ! Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation

36、check. WARNING LABEL and PRINT 1-8 (No.MA384) SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. SECTION 3 DISASSEMBLY 3.1Main body (used figure is KD-G343) 3.1.1Removing the FRONT CHASSIS assembly (See Fig.1, 2) (1) Remove the two screws A a

37、ttaching the FRONT CHASSIS assembly. (See Fig.1) (2) Remove the two screws B attaching the both side of the FRONT CHASSIS assembly.(See Fig.2) (3) Disengage the four hooks a engaged the both side of the FRONT CHASSIS assembly. (See Fig.2) Fig.1 Fig.2 3.1.2Removing the HEAT SINK (See Fig.3, 4) (1) Re

38、move the four screws C and the two screws D attaching the HEAT SINK. (See Fig.3) (2) Remove the two screws E and the one screw F attaching the HEAT SINK. (See Fig.4) Fig.3 Fig.4 A hook a B C D E F (No.MA384)1-9 3.1.3Removing the BOTTOM COVER (See Fig.5) (1) Remove the one screw G attaching the BOTTO

39、M COVER. (2) Slide the BOTTOM COVER to backward. Fig.5 3.1.4Removing the MAIN BOARD assembly (See Fig.6, 7) (1) Remove the two screws H and the two screws J attaching the MAIN BOARD assembly. (See Fig.6, 7) (2) Disconnect the connector CN501 connected to MAIN BOARD assembly and CD MECHANISM assembly

40、. (See Fig.7) Fig.6 Fig.7 3.1.5Removing the CD MECHANISM assembly (See Fig.8) (1) Remove the three screws K attaching the CD MECHANISM assembly. Fig.8 G H J CN501 K K 1-10 (No.MA384) 3.1.6Removing the SWITCH BOARD assembly (See Fig.9, 10 ) (1) Remove the VOLUME KNOB. (2) Remove the one screw L and t

41、he four screws M attaching the REAR COVER. (See Fig.9, 10) (3) Disengage the nine hooks b engaged the REAR COVER. (See Fig.10) Fig.9 Fig.10 L hook b hook b M M M (No.MA384)1-11 3.2CD mechanism assembly 3.2.1Removing the top cover (See Figs.1 and 2) (1) From the both side of the CD mechanism assembly

42、, remove the four screws A attaching the top cover. (See Fig.1.) (2) Lift the front side of the top cover and move the top cover backward to release the two joints a. (See Figs.1 and 2.) Fig.1 Fig.2 A A A a Top cover A a Top cover 1-12 (No.MA384) 3.2.2Removing the push switch (See Figs.3) (1) From t

43、he bottom side of the CD mechanism assembly, remove the screw B attaching the push switch. (2) Take out the push switch from the CD mechanism assembly. Reference: Remove the wires from soldered sections b of the push switch as required. 3.2.3Removing the base board (See Figs.3 and 4) Caution: Solder

44、 the short land c before the flexible wire is disconnected from the connector on the pickup. If the flexible wire is disconnected without applying solder, the pickup may be destroyed by static electricity. (See Fig.3.) (1) From the bottom side of the CD mechanism assembly, remove the screw C attachi

45、ng the base board. (See Figs.3 and 4.) (2) Solder the short land c on the pickup. (See Fig.3.) (3) Disconnect the flexible wire from the connector on the pickup. (See Fig.3.) (4) Remove the base board from the joints d of the frame in the direction of the arrow. (See Figs.3 and 4.) Reference: Remove

46、 the wires from the soldered sections e on the base board as required. (See Fig.3.) Caution: When reattaching the base board, be sure to remove solder from the short land c after connecting the flexible wire. (See Fig.3.) Fig.3 Fig.4 B b Wires Push switch Pickup e C Base board d Pickup c Connector F

47、lexible wire Frame CD mechanism assembly C Base board Flexible wire Frame d (No.MA384)1-13 3.2.4Removing the chassis unit (See Figs.5 and 6) Remove the top cover and base board. (1) From the top side of the CD mechanism assembly, remove the front suspension springs and rear suspension springs attach

48、ing the chassis unit to the frame. (See Fig.5.) (2) Remove the chassis unit from the dampers on the frame in an upward direction. (See Fig.6.) Note: Pay attention to misuse and loss of each spring. (See Fig.5.) When reassembling, make sure that the three shafts on the underside of the chassis unit a

49、re inserted to the dampers certainly. (See Fig.6.) Fig.5 Fig.6 Front suspension spring Rear suspension springRear suspension spring Front suspension spring Chassis unit Frame Chassis unit Shaft Shaft Shaft Damper R Damper F Damper F Frame 1-14 (No.MA384) 3.2.5Removing the clamper assembly (See Figs.7 and 8) Remove the top cover. Move the clamper assembly in the direction of the arrow to release the joints f from the chassis unit. Fig.7 Fig.8 ff Clamper assembly Chassis unit f f Clamper assembly Chassis unit (No.