Jvc-KDG-701-Service-Manual(1) 电路图 维修手册.pdf

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1、SERVICE MANUAL COPYRIGHT 2005 VICTOR COMPANY OF JAPAN, LIMITED No.MA057B 2005/3 CD RECEIVER MA057B20053 KD-G701 TABLE OF CONTENTS 1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 2SPECIFIC

2、 SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 4ADJUSTM

3、ENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-

4、28 Area suffix E - Continental Europe EX - Central Europe KD-G701 SOUND VOLVOL SOURCERF U D ATT RadioFans.CN 收音机爱 好者资料库 1-2 (No.MA057B) SPECIFICATION Design and specifications are subject to change without notice. AUDIO AMPLIFIER SECTION Maximum Power OutputFront50 W per channel Rear50 W per channel

5、 Continuous Power Output (RMS) Front19 W per channel into 4 , 40 Hz to 20 000 Hz at no more than 0.8% total harmonic distortion. 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) Equalizer Control RangeLow12 dB (60 Hz,

6、 80 Hz, 100 Hz, 120 Hz) Mid12 dB High12 dB (8 kHz, 10 kHz, 12 kHz, 15 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) 14

7、4 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 Capture Ratio1.5 dB MW TunerSensitivity20 V Selectivity35 dB LW TunerSensitivity50

8、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 decoding formatMPE

9、G1/2 Audio Layer 3 Max. Bit Rate:320 Kbps WMA (Windows Media Audio) decoding formatMax. Bit Rate:192 Kbps GENERAL Power RequirementOperating VoltageDC 14.4 V (11 V to 16 V allowance) Grounding System:Negative ground Allowable Operating Temperature0C to +40C Dimensions (W H D)Installation Size (appro

10、x.)182 mm 52 mm 159 mm Panel Size (approx.)188 mm 58 mm 12 mm Mass (approx.)1.5 kg (excluding accessories) RadioFans.CN 收音机爱 好者资料库 (No.MA057B)1-3 SECTION 1 PRECAUTION 1.1Safety Precautions ! Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such b

11、urrs 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. RadioFans.CN 收音机爱 好者资料库 1-4 (No.MA057B) 1.2Preventing static electricity Electrostatic discharge (ESD), which occurs when static ele

12、ctricity 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 the work area can destroy the optical pickup (l

13、aser 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 over it before placing the traverse unit (optical

14、 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 diode on the replacement optical pickup are short

15、ed. 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. 1.3Handling the traverse unit (optical pickup)

16、(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 replacement procedure in the text. Remove the anti

17、-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-fixed resistor that adjusts the laser power. Do n

18、ot 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 flexible wire is disconnected from the connector on the pickup unit. (If the flexible wire is disconnected without applying solder,

19、 the 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 sheet) or iron plate Pickup Short-circuit point (Soldering) Flexible wire (No.MA

20、057B)1-5 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. 3.CAUTION : There are no serviceable parts inside the Laser Unit. Do not disassemble the Laser Unit. Replace the complete

21、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 the drawer is open and the safety interlocks have failed or are defeated. It is dangerous to defeat the safety switches. 5.

22、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 may result in hazardous radiation exposure. REPRODUCTION AND POSITION OF LABELS ! Please use enough caution not to see the

23、 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. AVOID DIRECT EXPOSURE TO BEAM. (e) VARNING : Synlig och osynling laserstrlning nr den ppnas och sprren r urkopplad. Betrak

24、ta ej strlen. (s) VARO : Avattaessa ja suojalukitus ohitettuna tai viallisena olet alttiina nkyvlle ja nkymttmlle lasersteilylle. Vlt steen kohdistumista suoraan itseesi. (f) ADVARSEL : Synlig og usynlig laserstrling nr maskinen er ben eller interlocken fejeler. Undg direkte eksponering til strling.

25、 (d) CLASS 1 LASER PRODUCT 1-6 (No.MA057B) SECTION 2 SPECIFIC SERVICE INSTRUCTIONS 2.1HOW TO IDENTIFY MODELS 2.1.1NAME PLATE Discernment sign (No.MA057B)1-7 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 par

26、t of the front panel assembly. (2) Remove the front panel assembly. Fig.1 3.1.2Removing the heat sink (See Fig.2) (1) From the left side of the main body, remove the two screws A, two screws B and screw C attaching the heat sink. Fig.2 Front panel assembly Detach button Heat sink AACB 1-8 (No.MA057B

27、) 3.1.3Removing the top chassis assembly (See Figs.3 to 6) Prior to performing the following procedures, remove the heat sink. Reference: Remove the front panel assembly as required. (1) From the bottom side of the main body, remove the two screws D attaching the top chassis assembly to the bottom c

28、hassis assembly. (See Fig.3.) (2) From the both and rear sides of the main body, remove the four screws E attaching the top chassis assembly to the bottom chassis assembly. (See Figs.4 to 6.) (3) Lift the top chassis assembly in the direction of the arrow, disconnect the connector CN501 on the main

29、board. (See Figs.5 and 6.) (4) Take out the top chassis assembly from the bottom chassis assembly. Fig.3 Fig.4 Fig.5 Fig.6 Top chassis assembly D D Bottom chassis assembly Bottom chassis assembly Top chassis assembly E Top chassis assembly E Bottom chassis assembly CD mechanism assembly Main board C

30、N501 Top chassis assembly Bottom chassis assembly E E (No.MA057B)1-9 3.1.4Removing the front chassis (See Figs.7 and 8) Prior to performing the following procedure, remove the front panel assembly, heat sink and top chassis assembly. (1) From the both sides of the top chassis assembly, remove the tw

31、o screws F attaching the front chassis. Fig.7 Fig.8 3.1.5Removing the CD mechanism assembly (See Fig.9) Prior to performing the following procedures, remove the front panel assembly, heat sink and top chassis assembly. (1) From the inside of the top chassis assembly, remove the three screws G attach

32、ing the CD mechanism assembly. (2) Take out the CD mechanism assembly from the top chassis. Fig.9 Top chassis assembly Front chassis F Top chassis assembly Front chassis F Top chassis G GG CD mechanism assembly 1-10 (No.MA057B) 3.1.6Removing the main board (See Figs.10 and 11) Prior to performing th

33、e following procedures, remove the front panel assembly, heat sink and top chassis assembly. (1) From the rear side of the bottom chassis assembly, remove the two screws H attaching the rear bracket to the bottom chassis assembly. (See Fig.10.) (2) From the top side of the bottom chassis assembly, r

34、emove the two screws J attaching the main board to the bottom chassis assembly. (See Fig.11.) (3) Release the stopper of the connector CN701 on the main board in an upward direction, disconnect the card wire from the connector CN701. (See Fig.11.) (4) Disconnect the wire from the connector of the ge

35、ar bracket unit. (See Fig.11.) (5) Disconnect the wire from the connector CN702 and connector CN951 on the main board. (See Fig.11.) Reference: After connecting the wires, fix the wire with the wire holders. (6) Take out the main board from the bottom chassis assembly. Fig.10 Fig.11 3.1.7Removing th

36、e rear bracket (See Fig.12) Prior to performing the following procedures, remove the front panel assembly, heat sink, top chassis assembly and main board. (1) Remove the screw K and screw L attaching the rear bracket to the main board. Reference: During reassembly, before fixing the rear bracket ont

37、o the main body, insert the steering remote into the slot. Fig.12 Rear bracket HBottom chassis assembly Connector Wire holder Wire holder CN701 Stopper Bottom chassis assembly J J CN951 CN702 Wires Main board Card wire Gear bracket unit Rear bracket L K Insert the steering remote into the slot. (No.

38、MA057B)1-11 3.1.8Removing the front door mechanism assembly (See Fig.13.) Prior to performing the following procedures, remove the front panel assembly, heat sink, top chassis assembly and main board. (1) From the top side of the bottom chassis assembly, remove the screw M attaching the FPC guide to

39、 the bottom chassis. (2) Remove the five screws N attaching the gear bracket unit to the bottom chassis. Reference: When attaching the screws M and N, apply a locking agent them. (3) Take out the front door mechanism assembly from the bottom chassis. Fig.13 3.1.9Removing the front board (See Figs.14

40、 to 16) Prior to performing the following procedures, remove the front panel assembly. (1) From the rear side of the front panel assembly, remove the four screws P attaching the rear cover assembly to the front panel assembly. (See Fig.14.) (2) Release the twelve joints a of the front panel assembly

41、 and remove the rear cover assembly. (See Fig.15.) (3) Take out the front board from the front panel assembly. (See Fig.16.) Note: When removing the rear cover assembly and front board, be careful not to lose the comp. spring. (See Fig.16.) Fig.14 Fig.15 Fig.16 Bottom chassis N N M FPC guide Gear br

42、acket unit P Rear cover assembly P P Rear cover assembly joints ajoints a joints ajoints a Front board Front panel assembly Comp. spring 1-12 (No.MA057B) 3.2CD Mechanism Assembly 3.2.1Removing the top cover (See Figs.1 and 2) (1) Remove the two screws A on the both side of the body. (2) Lift the fro

43、nt side of the top cover and move the top cover backward to release the two joints a. Fig.1 Fig.2 A A A Joints aTop cover Joints a Top cover (No.MA057B)1-13 3.2.2Removing the connector board (See Figs.3 to 5) CAUTION: Before disconnecting the flexible wire from the pickup, solder the short-circuit p

44、oint on the pickup. No observance of this in- struction may cause damage of the pickup. (1) Remove the screw B fixing the connector board. (2) Solder the short-circuit point on the connector board. (3) Disconnect the flexible wire from the pickup. (4) Move the connector board in the direction of the

45、 arrow to release the two joints b. (5) Unsolder the wire on the connector board if necessary. CAUTION: Unsolder the short-circuit point after reassembling. Fig.3 Fig.4 Fig.5 B Connector board PickupShort-circuit point Joints b Wires Pickup Short-circuit point (Soldering) Flexible wire B Flexible wi

46、re Connector board Frame 1-14 (No.MA057B) 3.2.3Removing the DET switch (See Figs.6 and 7) (1) Extend the two tabs c of the feed sw. holder and pull out the switch. (2) Unsolder the DET switch wire if necessary. Fig.6 Fig.7 Connector board DET switch Pickup DET switch Tab c Tab c DET switch wire Feed

47、 sw. holder (No.MA057B)1-15 3.2.4Removing the chassis unit (See Figs.8 and 9) Prior to performing the following procedure, remove the top cover and connector board. (1) Remove the two suspension springs (L) and (R) attaching the chassis unit to the frame. CAUTION: The shape of the suspension spring

48、(L) and (R) are dif- ferent. Handle them with care. When reassembling, make sure that the three shafts on the underside of the chassis unit are inserted to the dampers certainly. Fig.8 Fig.9 Suspension spring (L) Suspension spring (L) Suspension spring (R) Suspension spring (R) Chassis unit Frame Ch

49、assis unit Frame Shafts Shaft Damper Damper Damper 1-16 (No.MA057B) 3.2.5Removing the clamper assembly (See Figs.10 and 11) Prior to performing the following procedure, remove the top cover. (1) Remove the clamper arm spring. (2) Move the clamper assembly in the direction of the arrow to release the two joints d. Fig.10 Fig.11 Clamper arm spring Chassis rivet assembly Joint d Joint d Clamper assembly Clamper arm spring Clamper assembly Joint d Joint d Chassis rivet assemb