Jvc-KDAR-260-Service-Manual(1) 电路图 维修手册.pdf

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1、SERVICE MANUAL COPYRIGHT 2004 Victor Company of Japan, Limited No.MA111 2004/11 CD RECEIVER MA111200411 KD-AR260,KD-G210 TABLE OF CONTENTS 1PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 2S

2、PECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 4

3、ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、 . . 1-25 SOUND VOLVOL SOURCERF U D ATT SOUND VOLVOL SOURCERF U D ATT Area suffix J - Northern America RadioFans.CN 收音机爱 好者资料库 1-2 (No.MA111) SPECIFICATION Design and specifications are subject to change without notice. AUDIO AMPLIFIER SECTION Power Output18 W RMS 4 Channels at 4 and or = 1 % THD +

5、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 to 20 000 Hz Line-Out Level/Impedance2.5 V/20 k load (full scale) Output Impedance1 k TUNER SECTION Frequency RangeFM87.5 MHz

6、to 107.9 MHz AM530 kHz to 1 710 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

7、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 GENERAL Power RequirementOp

8、erating 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 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

9、.)1.3 kg (2.9 lbs) (excluding accessories) RadioFans.CN 收音机爱 好者资料库 (No.MA111)1-3 SECTION 1 PRECAUTIONS 1.1Safety Precautions ! 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 u

10、se 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.MA111) 1.2Preventing static electricity Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can dest

11、roy 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 (laser diode) in devices such as CD players. Be careful to use prop

12、er 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 pickup) on it. (2) Ground yourself Use an anti-static wrist strap to

13、 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 shorted. After replacement, return the shorted parts to their original con

14、dition. (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) (1) Do not subject the traverse unit (optical pickup) to strong shock

15、s, 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-static pin when replacing the traverse unit. Be careful not to take

16、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 not turn it. 1.4Attention when traverse unit is decomposed *Please ref

17、er 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 CD pickup unit. (If the flexible wire is disconnected without applying solder, the CD pickup may be destroyed by static electricity.) In the

18、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.MA111)1-5 SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service

19、 manual does not describe SPECIFIC SERVICE INSTRUCTIONS. 1-6 (No.MA111) SECTION 3 DISASSEMBLY 3.1Main body 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 bo

20、ttom cover (See Fig.2) (1) Turn the main body up side 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. CAUTION: When releasing t

21、he joints using a screwdriver, do not damage the main board. Fig.2 3.1.3Removing the front chassis assembly (See Fig.3) Prior to performing the following procedures, remove the front panel assembly and bottom cover. (1) Remove the screw A on the both sides of the main body. (2) Release the two joint

22、s d and two joints e on the both sides of the main body, then remove the front chassis assembly toward the front. Fig.3 Front panel assembly Detach button Bottom cover Joint b Joint b Joint c Joint a Joint a Joint d Front chassis assembly A Joint e Joint dJoint e (No.MA111)1-7 3.1.4Removing the side

23、 panel (See Fig.4) Prior to performing the following procedure, remove the front panel assembly as required. (1) Remove the screw B and two screws C attaching the side panel on the left side of the main body, and remove the side panel. Fig.4 3.1.5Removing the rear bracket (See Fig.5) Prior to perfor

24、ming the following procedure, remove the bottom cover. (1) Remove the three screws D, three screws E and two screws F attaching the rear bracket on the back side of the main body. (2) Remove the rear bracket. Fig.5 3.1.6Removing the main board (See Fig.6) Prior to performing the following procedure,

25、 remove the front panel assembly, front chassis assembly, side panel, bottom cover and rear bracket. (1) Remove the two screws G attaching the main board. (2) Disconnect the connector CN501 and remove the main board. Fig.6 Side panel BCC EF D D E Rear bracket F Main board G G CN501 1-8 (No.MA111) 3.

26、1.7Removing the CD mechanism assembly (See Fig. 7) Prior to performing the following procedure, remove the front panel assembly, front chassis assembly, side panel, bottom cover, rear bracket, main board and CD mechanism board. (1) Remove the three screws H attaching the top chassis. (2) Take out th

27、e CD mechanism assembly. Fig.7 3.1.8Removing the front board (See Figs.8 to 10) Prior to performing the following procedure, remove the front panel assembly. (1) Remove the four screws J on the back side of the front pan- el assembly. (See Fig.8.) (2) Release the ten joints f. (See Fig.9.) (3) Relea

28、se the joint g and take out the front board. (See Fig.10.) Fig.8 Fig.9 Fig.10 H H CD mechanism assembly Top chassis J J J Joints f Joint fJoints f Joints f Joints f Joint f Front board Joint gFront panel assembly (No.MA111)1-9 3.2CD Mechanism Assembly 3.2.1Removing the top cover (See Figs.1 and 2) (

29、1) Remove the two screws A on the both side of the body. (2) Lift the front 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 1-10 (No.MA111) 3.2.2Removing the connector board (See Figs.3 to 5) CAUTION: Before di

30、sconnecting the flexible wire from the pickup, solder the short-circuit point 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 w

31、ire from the pickup. (4) Move the connector board in the direction of the 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

32、 Wires Pickup Short-circuit point (Soldering) Flexible wire B Flexible wire Connector board Frame (No.MA111)1-11 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 Connec

33、tor board DET switch Pickup DET switch Tab c Tab c DET switch wire Feed sw. holder 1-12 (No.MA111) 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

34、chassis unit to the frame. CAUTION: The shape of the suspension spring (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 sprin

35、g (L) Suspension spring (R) Suspension spring (R) Chassis unit Frame Chassis unit Frame Shafts Shaft Damper Damper Damper (No.MA111)1-13 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) M

36、ove 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 assembly 1-14 (No.MA111) 3.2.6Removing the loading / feed mot

37、or assembly (See Figs.12 and 13) Prior to performing the following procedure, remove the top cover, connector board and chassis unit. (1) Remove the screw C and move the loading / feed motor assembly in the direction of the arrow to remove it from the chassis rivet assembly. (2) Disconnect the wire

38、from the loading / feed motor assembly if necessary. CAUTION: When reassembling, connect the wire from the loading / feed motor assembly to the flame as shown in Fig.12. Fig.12 Fig.13 Loading / feed motor assembly Loading / feed motor assembly C (No.MA111)1-15 3.2.7Removing the pickup unit (See Figs

39、.14 to 18) Prior to performing the following procedure, remove the top cover, connector board and chassis unit. (1) Remove the screw D and pull out the pu. shaft holder from the pu. shaft. (2) Remove the screw E attaching the feed sw. holder. (3) Move the part e of the pickup unit upward with the pu

40、. shaft and the feed sw. holder, then release the joint f of the feed sw. holder in the direction of the arrow. The joint g of the pickup unit and the feed rack is released, and the feed sw. holder comes off. (4) Remove the pu. shaft from the pickup unit. (5) Remove the screw F attaching the feed ra

41、ck to the pickup unit. 3.2.8Reattaching the pickup unit (See Figs.14 to 17) (1) Reattach the feed rack to the pickup unit using the screw F. (2) Reattach the feed sw. holder to the feed rack while setting the joint g to the slot of the feed rack and setting the part f of the feed rack to the switch

42、of the feed sw. holder correct- ly. (3) As the feed sw. holder is temporarily attached to the pickup unit, set to the gear of the joint g and to the bending part of the chassis (joint h) at a time. CAUTION: Make sure that the part i on the underside of the feed rack is certainly inserted to the slot

43、 j of the change lock lever. (4) Reattach the feed sw. holder using the screw E. (5) Reattach the pu. shaft to the pickup unit. Reattach the pu. shaft holder to the pu. shaft using the screw D. Fig.14 Fig.15 Fig.16 Fig.17 Fig.18 Feed sw. holder E D Joint g Joint f Part e Pickup unit Pu. shaft holder

44、 Pu. shaft Feed sw. holder Part e Pickup unit Feed rack Feed sw. holder D E Joint f Pu. shaft holder Pu. shaft Pickup unit Joint h Part i Slot j Joint g FFeed rack Pickup unit Joint f Joint g Feed rack Pickup unit Feed sw. holder 1-16 (No.MA111) 3.2.9Removing the trigger arm (See Figs.19 and 20) Pri

45、or to performing the following procedure, remove the top cover, connector board and clamper unit. (1) Turn the trigger arm in the direction of the arrow to release the joint k and pull out upward. CAUTION: When reassembling, insert the part m and n of the trigger arm into the part p and q at the slo

46、t of the chassis rivet assembly respectively and join the joint k at a time. Fig.19 Fig.20 3.2.10 Removing the top plate assembly (See Fig.21) Prior to performing the following procedure, remove the top cover, connector board, chassis unit, and clamper assembly. (1) Remove the screw H. (2) Move the

47、top plate assembly in the direction of the arrow to release the two joints r. (3) Unsolder the wire marked s if necessary. Fig.21 Joint k Trigger arm Chassis rivet assembly Trigger arm Chassis rivet assembly Part p Part m Part n Part q Top plate assembly Joints r s H (No.MA111)1-17 3.2.11 Removing t

48、he mode sw. / select lock arm (See Figs.22 and 23) Prior to performing the following procedure, remove the top plate assembly. (1) Bring up the mode sw. to release from the link plate (joint t) and turn in the direction of the arrow to release the joint u. (2) Unsolder the wire of the mode sw. marke

49、d s if necessary. (3) Turn the select lock arm in the direction of the arrow to re- lease the two joints v. (4) The select lock arm spring comes off the select lock arm at the same time. Fig.22 Fig.23 Mode sw. Select lock arm Joint tLink plate Joint u s Top plate Top plate Select lock arm Select lock arm spring Select lock arm Link plate Joints v Hook w 1-18 (No.MA111) 3.2.12 Reassembling the mode sw. / select lock arm (See Figs.24 to 26) REFERENCE: Reverse the above removing procedure. (1) Reattach the select lock arm spri