Jvc-KSLX-200-R-Service-Manual(1) 电路图 维修手册.pdf

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1、1-1 KS-LX200R SERVICE MANUAL No.49573 Oct. 2000 COPYRIGHT 2000 VICTOR COMPANY OF JAPAN, LTD. KS-LX200R This service manual is printed on 100% recycled paper. CASSETTE RECEIVER KS-LX200R Area Suffix E EX Continental Europe Central Europe KS-LX200R 107891112OFFSEL Contents Safety precaution1-2 Disasse

2、mbly method1-3 Adjustment method1-13 Description of major ICs1-17 RadioFans.CN 收音机爱 好者资料库 1-2 KS-LX200R ! 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. Safety precaution RadioFans.CN

3、收音机爱 好者资料库 1-3 KS-LX200R Remove the two screws A attaching the bottom cover to the top chassis on the bottom of the body. Remove the two screws B attaching the top chassis on both sides of the body. Remove the screw C and the three screws D attaching the heat sink on the left side of the body. Remov

4、e the two screws E and the screw F on the back of the body. Remove the two screws G on the upper side of the body. Move the top chassis upward and disconnect the cassette mechanism connector from the main board connector by pulling it. Remove the top chassis from the body. 1. 2. 3. 4. 5. 6. Disassem

5、bly method Removing the top chassis (See Fig.1 to 5) Fig.1 Fig.2 Fig.3 Fig.4Fig.5 Bottom cover A A B Top chassis Top chassis Heat sink C D B E F Top chassis G G RadioFans.CN 收音机爱 好者资料库 1-4 KS-LX200R Prior to performing the following procedure, remove the top chassis. Remove the screw S attaching the

6、 bracket (L). Disconnect the flexible harness from connector CN701, the card wire from CN702 on the main board and the harness from CN503 and CN504 respectively. Remove the three screws H attaching the main board assembly to the bottom cover on the upper side of the body. Remove the screw I attachin

7、g the rear panel and the bottom cover on the back of the body. Move the main board in the direction of the arrow and release the two joints a. (At this point, the main board can be removed with the rear panel and the rear heat sink.) Remove the screw J and the two screws K attaching the rear heat si

8、nk on the back of the body. Remove the two screws L and the screw M attaching the rear panel. Now, the main board assembly will be removed. 1. 2. 3. 4. 5. 6. Removing the main board assembly (See Fig.6 to 8) When reassembling, correctly engage the switch S561 and S562 on the main board with the part

9、 e of the operation assembly (Refer to Fig.7, 18 and 19). ATTENTION: Fig.6 Fig.8 Fig.7 H H CN504 S CN701 Front panel assembly Main board assembly CN702 CN503 H S652 Main board S651 J IK L M Rear panel Rear heat sink L Joint a Joint a e Bracket (L) 1-5 KS-LX200R Prior to performing the following proc

10、edure, remove the top chassis assembly. Disconnect the flexible harness from connector CN701 on the main board assembly. Remove the four screws N attaching the front panel assembly on both sides of the body. Remove the front panel toward the front. 1. 2. Removing the front panel assembly (See Fig.9

11、to 11) Prior to performing the following procedure, remove the top chassis assembly and the front panel assembly. Remove the four screws O attaching the front board on the back of the front panel assembly and release the eight joints b. 1. Removing the Front Board (See Fig.12) Fig.9 Fig.10Fig.11 Fig

12、.12 CN701 Front panel assembly Main board assembly CN701 Front panel assembly NN Front panel assembly O O Joints b Joints b 1-6 KS-LX200R Prior to performing the following procedure, remove the top chassis assembly and the front panel assembly. Disconnect the harness from connector CN503 and CN504 o

13、n the main board. Remove the four screws P and detach the lifter unit from the bottom cover. 1. 2. Removing the lifter unit (See Fig.13) Prior to performing the following procedure, remove the lifter unit. Remove the washer attaching the clutch assembly and detach the clutch assembly from the shaft

14、of the lifter unit. Remove the two screws Q attaching the feed motor (L). 1. 2. Removing the feed motor (L) (See Fig.14) Prior to performing the following procedure, remove the lifter unit. Remove the washer attaching the clutch assembly and detach the clutch assembly from the shaft of the lifter un

15、it. Remove the two screws R attaching the feed motor (R). 1. 2. Removing the feed motor (R) (See Fig.15) Clutch assembly Fig.13 P Lifter unit assembly CN504 CN503 P Fig.14 Fig.15 Lifter unit assembly Feed motor (L) assembly Washer Q R Clutch assembly Washer Feed motor (R) assembly Lifter unit assemb

16、ly 1-7 KS-LX200R Prior to performing the following procedure, remove the top chassis assembly, the front panel assembly and the lifer unit. Remove the three screws S attaching the right and left brackets which fix gears on both sides of the operation assembly. Remove the springs 5 and 6 from the ope

17、ration assembly. Disconnect the card wire from connector CN702 on the main board and remove the operation assembly. 1. 2. 3. Removing the operation assembly (See Fig.16 to 19) When reassembling, correctly engage the switch S561 and S562 on the main board and the right gear with the part c of the ope

18、ration assembly. ATTENTION: Fig.16 Fig.17 Fig.18Fig.19 S Spring 6CN702 Operation assembly Spring 5 S Operation assembly c S652 S651 Operation assembly c Operation assembly c S652S651 Bracket (R) Bracket (L) Bracket (R) 1-8 KS-LX200R Prior to performing the following procedure, remove the operation a

19、ssembly. Remove the six screws T attaching the button panel on the operation assembly. Pull out the operation switch board from inside of the button panel. 1. 2. Removing the operation switch board (See Fig.20 and 21) Prior to performing the following procedure, remove the top chassis. Remove the fo

20、ur screws U and the cassette mechanism assembly from the top chassis. 1. Removing the cassette mechanism assembly (See Fig.22) Button panel Operation switch board Button panel CD mechanism assembly Fig.20 Fig.21 Fig.22 TT UU UU 1-9 KS-LX200R Disconnect the wire from connector CP401 on the head ampli

21、fier board. Remove the screw A. Remove the head amplifier board in the direction of the arrow to unhook two joints a. Disconnect connector CP402 on the head amplifier board from the connector board. 1. 2. 3. 4. Disassembly method Removing the head amplifier board (See Fig.1) Unsolder soldering b and

22、 c on the connector board. Remove the three screws C. Remove the connector board in the direction of the arrow to unhook joint d. 1. 2. 3. Removing the connector board (See Fig.3) Prior to performing the following procedure, remove the head amplifier board and the mechanism bracket. Prior to perform

23、ing the following procedure, remove the head amplifier board. Remove the four screws B on the underside of the cassette mechanism assembly. 1. Removing the mechanism bracket (See Fig.2) Connector board Head amplifier board Joints a A Fig.1 Fig.2 Fig.3 B B B Mechanism bracket C Soldering b Soldering

24、c C C Joint d Connector board 1-10 KS-LX200R Prior to performing the following procedure, remove the connector board. Remove the slit washer e retaining the load arm assembly. Remove the spring g in the load arm assembly marked joint f. Draw out the load arm assembly from the shaft and rotate in the

25、 direction of the arrow to remove it from the cach. 1. 2. 3. Removing the load arm assembly (See Fig.4) Prior to performing the following procedure, remove the connector board and the load arm assembly. Remove the two screws D attaching the sub chassis. Draw out the sub chassis from the holder arm s

26、haft in the direction of the arrow (marked joint h). Remove the sub chassis from the main chassis upwards. 1. 2. Removing the sub chassis (See Fig.4) Prior to performing the following procedure, remove the connector board and the load arm assembly. Remove the screw E attaching the cassette holder /

27、holder arm. Draw out the holder arm shaft from the sub chassis in the direction of the arrow (marked joint h). Disengage two joints i and remove the cassette holder / holder arm. 1. 2. 3. Removing the cassette holder / holder arm (See Fig.5) The spring g comes off as the load arm assembly is drawn o

28、ut from the shaft. ATTENTION: Load arm assembly Holder arm Load arm assembly Joint h Joint f Slit washer e Load arm assembly Spring g Sub chassis Cassette holder Main chassis Worm gear Fig.4 Fig.5 D D E Joint h Sub chassis Cassette holder Main chassis Joints i Holder arm Cach 1-11 KS-LX200R Prior to

29、 performing the following procedure, remove the connector board and the load arm assembly. Remove the slit washer j and the worm gear. Remove the two screws F. 1. 2. Removing the sub motor (See Fig.4 and 6) Prior to performing the following procedure, remove the connector board, the load arm assembl

30、y and the sub chassis. Remove the spring K retaining the play head assembly and pull out the play head assembly. Remove the two screws G. Remove the two slit washers l attaching the pinch roller assembly (twin set). Pull out each pinch roller assembly. 1. 2. 3. Removing the play head / pinch roller

31、assembly (twin set) (See Fig.7) Worm gear Slit washer j Sub motor F Fig.6 Fig.7 Slit washer l Spring k Pinch roller assembly Spring k ? ? Play head Pinch roller assembly Slit washer l G 1-12 KS-LX200R Prior to performing the following procedure, remove the connector board, the load arm assembly, the

32、 sub chassis and the cassette holder / holder arm. Remove the two slit washers m while pushing down the reel driver on the two reel disc assemblies. Pull out the two screws I from the shaft with the reel driver and the spring respectively. 1. 2. Removing the reel disc assembly (twin set) (See Fig.8

33、to 10) Prior to performing the following procedure, remove the connector board, the load arm assembly, the sub chassis and the cassette holder / holder arm. Remove the belt from the underside of the mechanism assembly. Remove the two slit washers on the upper side of the mechanism assembly. Pull out

34、 the flywheel assembly (F) and (R) from underside of the mechanism assembly. 1. 2. 3. Removing the flywheel assembly (F) and (R) (See Fig.8 and 11) From the underside of the mechanism assembly, unsolder soldering o on the reel disc board. Unbend the joint hook p retaining the reel disc board. Remove

35、 the screw H. 1. 2. 3. Removing the reel disc board (See Fig.11) Unsolder soldering q on the motor. Remove the belt from the underside of the mechanism assembly. Remove the two screws I from the underside of the mechanism assembly. 1. 2. 3. Removing the motor (See Fig.8and 11) Reel disc assembly Sli

36、t washers n Soldering q Reel driver Motor Slit washers m Reel driver Reel disc assembly Fig.8 Fig.9 Fig.10 Fig.11 Reel driver Slit washer m Reel driver Reel disc Spring Flywheel (F) Flywheel (R) Belt Soldering o Reel disc board Joint hook p MotorH I I Reel disc board Tab 1-13 KS-LX200R Adjustment me

37、thod 1.Digital osclloscope(100MHz) 2.Frequency Counter meter 3.Electric voltmeter 4.Wow & flutter meter 5.Test Tapes VT724 VT739 VT712 VT703 6.Torque gauge Measuring conditions(Amplifier section) Power supply voltage Load impedance Line out Standard volume position Balance and Bass,Treble volume .Fa

38、der :Center(Indication0) Loudness,Dolby NR,Sound,Cruise:Off Volume position is about 2V at speaker output with following conditions.Playback the test tape VT721. AM mode 999kHz/62dB,INT/400Hz,30% modulation signal on receiving. FM mono mode 97.9MHz/66dB,INT/400Hz,22.5kHz deviation pilot off mono. FM

39、 stereo mode 1kHz,67.5kHz dev. pilot7.5kHz dev. Output level 0dB(1 V,50 /open terminal). for DOLBY level measurement For playback frequency measurement For wow flutter & tape speed measurement For head azimuth measurement Cassette type for CTG-N (mechanism adjustment) DC14.4V(10.516V) 4 (2Speakers c

40、onnection) 20k Tuner section BAND STEP FM : 100kHz (Seek), 50kHz (Manual) AM : 9kHz step DUMMY LOAD Exclusive dummy load should be used for AM and FM dummy load,there is a loss of 6dB between SSG output and antenna input. The loss of 6dB need not be considered since direct reading of figures are app

41、lied in this working standard. Arrangement of Adjusting Cassette Mechanism Section Preset Memory Initialization Preset Memory Band M1 87.5 153 M2 89.9 216 M3 97.9 603 M4 105.9 999 M5 108.0 1404 M6 87.5 1620 FM(MHz) AM(kHz) Azimuth screw (Forward side) Azimuth screw (Reverse side) Playback head Tape

42、speed adjust Capstan motor Cassette mechanism (Surface) Test Instruments reqired for adjustment 1-14 KS-LX200R 1 C401 C402 C403 C404 C405 C406 C407 C408 C409 C410 C411 C412 C413 C414 C415 C416 C417 C418 C419 CP401 CP402 CP403 D401 D402 D403 IC401 IC402 Q401 Q402 Q403 R401 R402 R403 R404 R405 R406 R4

43、07 R408 R409 R410 R411 R412 R413 R414 R415 R416 R417 R418 R419 R420 R421 R422 R423 R424 R425 VR402 VR401 B403 B415 B413 B407 B416 B406 B414 B405 B412 B404 B410 B402 B408 B401 B409 B411 1 11 21 1 17 1 2 E 1 1 FSMW1101A 31 TPP We are advancing efforts to make our extension cords comman for all Car Ste

44、reo products. Please use this type of extension cord as follows. As a U -shape type top cover is employed,this type of extension cord needed to check operation of the mechanism assembly after disassembly. Extension cords VR402:Rch (Dolby NR level adj) VR401:Rch (Dolby NR Frequency response adj) Info

45、rmation for using a Car Stereo service jig (for adjustment and checking) EXT-KSRT002-18P(18 pin extension cord) For connection between mechanism assembly and main board assembly. Check for mechanism-driving section such as moter ,etc. Arrangment of adjusting Head amplifier board section (Reverse sid

46、e) Disassembly method. (Refer to mthod to remove main parts) 1.Remove the bottom cover. 2.Remove the front panel assembly. 3.Remove the top cover. (Remove the screws at each side of heat sink and rear panel) 4.Install the front panel (whose assembly was removed in step 2) to the main unit. 5.Confirm

47、 that current is being is carried by connecting an extension cord jig. Connection diagram EXTLX001-2P EXTLX001-6PC EXTLX001-6PF EXTLX001-16PF EXTLX002-4P EXTLX002-SWPWB EXTLX002-16PC EXTLX001-2P EXT-KSRT002-18P 1-15 KS-LX200R EXTGS004-26P EXTLX001-2P EXTLX001-6PC EXTLX001-6PF EXTLX001-16PF EXTLX002-

48、4P EXTLX002-SWPWB EXTLX002-16PC EXTLX001-2P Extension cord list EXTLX002-JIG : Kit including the following 8 extension parts. 1 2 3 4 5 6 7 2 1 1 1 1 1 1 2Pin, 30cm extension cord 6Pin, 30cm flat wire 6Pin x 2, interlocking connector 16Pin flat wire 16Pin, interlocking connector 3 switch PWB 4Pin, 3

49、0cm extension cord EXTLX001-2P EXTLX001-6PF EXTLX001-6PC EXTLX002-16PF EXTLX002-16PC EXTLX002-SWPWB EXTLX002-4P No.Parts numberQuantityDescription Besides the above kit, we offer the conventional extension cord for CASSETTE mechanism which are not essential to operation check or service. The mechanism should be directly connected to the board using the extension wire. EXT-KSRT002-18P 1-16 KS-LX200R ItemConditionsAdjustment and Confirmation methodsS.ValuesAdjust Head azimuth adjustment Head heigh