Jvc-KDG-417-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.MA202 2005/7 CD RECEIVER MA20220057 KD-G417 Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) TABLE OF CONTENTS 1PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

3、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . .

4、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26 Area suffix EE - Russian Federation RadioFans.CN 收音机爱 好者资料库 1-2 (No.MA202) SPECIFICATION Design and specifications are subject to change without notice. AUDIO AMPLIFIER SECTION Maximum Power OutputFront50 W per c

5、hannel 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 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) Tone Control

6、 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/Impedance2.5 V/20 k load (full scale) Output Impedance1 k 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

7、) 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 Capture Ratio1.5 dB MW TunerSensitivity20 V Selectivity35 dB LW TunerSensitivit

8、y50 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 Forma

9、tMPEG1/2 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 SystemNegative ground Allowable Operating Temperature0C to +40C Dimensions (W H D)Installation Size (

10、approx.)182 mm 52 mm 150 mm Panel Size (approx.)188 mm 58 mm 11 mm Mass (approx.)1.3 kg (excluding accessories) RadioFans.CN 收音机爱 好者资料库 (No.MA202)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 part of th

11、e 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 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

12、 main body, then remove the bottom cover from the main body. Note: When releasing the joints using a screwdriver, do not damage the main 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 o

13、f 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 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 dJo

14、int e RadioFans.CN 收音机爱 好者资料库 1-8 (No.MA202) 3.1.4Removing the side panel (See Fig.4) Reference: 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. (2) Remove the side panel from the main body. Fig.4 3.1.5R

15、emoving the rear bracket (See Fig.5) Remove the bottom cover. (1) Remove the three screws D, one screw E and two screws F attaching the rear bracket on the back 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

16、 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 of 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 mai

17、n 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 3.1.5 Removing the rear bracket.) Fig.5 Fig.6 Side panel CBC DD E Rear bracket FF Main board G G CN501 Rear bracket (No.MA202)1-9 3.1.7Re

18、moving the CD mechanism assembly (See Fig. 7) Remove the front panel assembly, bottom cover, side panel, rear bracket and main board. Reference: Remove the front chassis assembly as required. (1) Remove the three screws H attaching the CD mechanism assembly on the top chassis. (2) Take out the CD me

19、chanism assembly. Fig.7 3.1.8Removing the switch board (See Figs.8 to 10) Remove the front panel assembly. (1) Remove the five screws J on the back side of the front pan- el assembly. (See Fig.8.) (2) Release the twelve joints f and remove the rear cover. (See Fig.9.) (3) Release the joint g and tak

20、e out the switch board from the front panel assembly. (See Fig.10.) Note: When removing the rear cover assembly and switch board, be careful not to lose the spring. Fig.8 Fig.9 Fig.10 H H CD mechanism assembly Top chassis J JJ Joints f Joints f Joints fJoints f Rear cover Switch board Joint g Front

21、panel assembly 1-10 (No.MA202) 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 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 J

22、oints a Top cover (No.MA202)1-11 3.2.2Removing the connector board (See Figs.3 to 5) CAUTION: Before disconnecting 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 co

23、nnector 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 arrow to release the two joints b. (5) Unsolder the wire on the connector board if necessary. CAUTION: Unsolder the short-c

24、ircuit 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 wire Connector board Frame 1-12 (No.MA202) 3.2.3Removing the DET switch (See Figs.6 and 7) (1) Extend the two tabs c of the fe

25、ed 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 sw. holder (No.MA202)1-13 3.2.4Removing the chassis unit (See Figs.8 and 9) Prior to performing the following procedure, rem

26、ove 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 (L) and (R) are dif- ferent. Handle them with care. When reassembling, make sure that the three shafts on the underside of the

27、 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 Chassis unit Frame Shafts Shaft Damper Damper Damper 1-14 (No.MA202) 3.2.5Removing the clamper assembly (See Figs.10 and 11) Pri

28、or 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 Clam

29、per assembly Joint d Joint d Chassis rivet assembly (No.MA202)1-15 3.2.6Removing the loading / feed motor 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 assemb

30、ly in the direction of the arrow to remove it from the chassis rivet assembly. (2) Disconnect the wire 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 / fee

31、d motor assembly Loading / feed motor assembly C 1-16 (No.MA202) 3.2.7Removing the pickup unit (See Figs.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) Rem

32、ove the screw E attaching the feed sw. holder. (3) Move the part e of the pickup unit upward with the pu. 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. holde

33、r comes off. (4) Remove the pu. shaft from the pickup unit. (5) Remove the screw F attaching the feed rack 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

34、 setting the joint g to the slot of the feed rack and setting the part f of the feed rack to the switch 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

35、. CAUTION: Make sure that the part i on the underside of the feed rack is certainly inserted to the slot 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. Fi

36、g.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 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

37、 rack Pickup unit Feed sw. holder (No.MA202)1-17 3.2.9Removing the trigger arm (See Figs.19 and 20) Prior 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.

38、CAUTION: When reassembling, insert the part m and n of the trigger arm into the part p and q at the slot 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 th

39、e top cover, connector board, chassis unit, and clamper assembly. (1) Remove the screw H. (2) Move the 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 rive

40、t assembly Part p Part m Part n Part q Top plate assembly Joints r s H 1-18 (No.MA202) 3.2.11 Removing the 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) an

41、d turn in the direction of the arrow to release the joint u. (2) Unsolder the wire of the mode sw. marked 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 Fi

42、g.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 (No.MA202)1-19 3.2.12 Reassembling the mode sw. / select lock arm (See Figs.24 to 26) REFERENCE: Reverse the above removing procedure. (1) R

43、eattach the select lock arm spring to the top plate and set the shorter end of the select lock arm spring to the hook w on the top plate. (2) Set the other longer end of the select lock arm spring to the boss x on the underside of the select lock arm, and join the select lock arm to the slots (joint

44、 v). Turn the select lock arm as shown in the figure. (3) Reattach the mode sw. while setting the part t to the first peak of the link plate gear, and join the joint u. CAUTION: When reattaching the mode sw., check if the points y and z are correctly fitted and if each part operates properly. Fig.24

45、 Fig.25 Fig.26 Select lock arm Hook w Boss x Select lock arm spring Joint v Joint v Link plate Joint t Point z Point y Select lock arm Mode sw. Joint t Joint u Link plate 1-20 (No.MA202) 3.2.13 Removing the select arm R / link plate (See Figs.27 and 28) Prior to performing the following procedure, r

46、emove the top plate assembly. (1) Bring up the select arm R to release from the link plate (joint a) and turn as shown in the figure to release the two joints b and joint c. (2) Move the link plate in the direction of the arrow to release the joint d. Remove the link plate spring at the same time. R

47、EFERENCE: Before removing the link plate, remove the mode sw. Fig.27 Fig.28 3.2.14 Reattaching the Select arm R / link plate (See Figs.29 and 30) REFERENCE: Reverse the above removing procedure. (1) Reattach the link plate spring. (2) Reattach the link plate to the link plate spring while joining th

48、em at joint d. (3) Reattach the joint a of the select arm R to the first peak of the link plate while joining the two joints b with the slots. Then turn the select arm R as shown in the figure. The top plate is joined to the joint c. CAUTION: When reattaching the select arm R, check if the points e

49、and f are correctly fitted and if each part operates prop- erly. Fig.29 Fig.30 Joint rLink plate Joint b Joint b Joint c Select arm R Joint a Top plate Link plate Link plate spring Joint d Select arm R Joint c Joint d Link plate spring Joint b Joint b Joint a Link plate Joint a Point e Point f (No.MA202)1-21 3.2.15 Removing the loading roller assembly (See Figs.31 to 33) Prior to performing the following procedure, remove the clamper assembly and top plate assembly. (1) Push inward the loading roller assembly on the gear side and detach it up