JVC KS-FX381 Service Manual Download Page 19 | Manualshive

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SCHEMATIC DIAGRAMS

CASSETTE RECEIVER

No.MA132SCH

2005/4

KS-FX381

Area suffix

UF ------------------------ Chaina

Printed circuit boards

2-1
2-2

Block diagram
Standard schematic diagrams

2-5 to 6

COPYRIGHT 2005 Victor Company of Japan, Limited.

CD-ROM No.SML200504

www. xiaoyu163. com

QQ 376315150

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TEL 13942296513

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TEL 13942296513 QQ 376315150 892498299

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

http://www.xiaoyu163.com

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Summary of Contents for KS-FX381

Page 1: ...N 1 3 2 SPECIFIC SERVICE INSTRUCTIONS 1 4 3 DISASSEMBLY 1 5 4 ADJUSTMENT 1 13 5 TROUBLESHOOTING 1 17 Area suffix UF China www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 2: ...3 dBf 1 0 µV 75 Ω 50 dB Quieting Sensitivity 16 3 dBf 1 8 µV 75 Ω Alternate Channel Selectivity 400 kHz 65 dB Frequency Response 40 Hz to 15 000 Hz Stereo Separation 35 dB Capture Ratio 2 0 dB AM Tuner Sensitivity 20 µV Selectivity 35 dB CASSETTE DECK SECTION Wow Flutter 0 15 WRMS Fast Wind Time 190 sec C 60 Frequency Response 50 Hz to 14 000 Hz Normal tape Signal to Noise Ratio 52 dB Stereo Separ...

Page 3: ...e chassis Therefore pay attention to such burrs in the case of preforming repair of this system www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 4: ...does not describe SPECIFIC SERVICE INSTRUCTIONS www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 5: ... When releasing the joints using a screwdriver do not damage the main board Fig 2 3 1 3 Removing the front chassis assembly See Fig 3 Prior to performing the following procedures remove the front panel assembly and bottom cover 1 Remove the two screws A on both side of 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 assembl...

Page 6: ...e rear bracket Fig 5 3 1 6 Removing the main board See Fig 6 Prior to performing the following procedures remove the front panel assembly bottom cover front chassis assembly side panel and rear bracket 1 Remove the two screws G attaching the main board on the top chassis 2 Disconnect the two connectors CN901 and CN721 on the main board from the cassette mechanism assembly and take out the main boa...

Page 7: ...ove the head amplifier board in the direction of the arrow to release the two joints f the head amplifier board can be removed Fig 8 3 1 9 Removing the relay board See Fig 9 Prior to performing the following procedures remove the front panel assembly bottom cover front chassis assembly side panel rear bracket main board and cassette mechanism as sembly 1 Disconnect the wire from CP722 on the relay...

Page 8: ... front panel assembly 1 Remove the four screws N on the back side of the front panel assembly See Fig 11 2 Release the nine joints h and remove the rear cover See Fig 12 3 Take out the switch board from the front panel assembly See Fig 13 Note When removing the rear cover assembly and switch board be careful not to lose the spring Fig 11 Fig 12 Fig 13 Mecha bracket M M M M N Front panel assembly N...

Page 9: ...emove the C washer and pull out the FF roller 3 Remove the S support plate the A arm spring a and b the playback head ATTENTION The A arm spring a differs from the A arm spring b 3 2 5 Removing the pinch roller R and F assembly See Fig 2 Prior to performing the following procedure remove the direc tion switch board and the FF REW lever assembly 1 Remove the P arm spring f in the pinch roller F ass...

Page 10: ...assette hold er 1 Remove the C washer and pull out reel disc assembly ATTENTION Replace with a new C washer when reattaching Fig 4 3 2 8 Removing the motor assembly See Fig 5 1 Unsolder the two wires j on the motor assembly 2 Turn over the cassette mechanism assembly and remove the main belt and the sub belt from the motor pulley ATTENTION The main belt can now be removed 3 Remove the two screws G...

Page 11: ...or link B on the front side of the cassette mechanism assembly by turning it as shown in Fig 6 2 Remove the three screws E and the one screw F on the underside of the cassette mechanism assembly ATTENTION The reel base assembly is not repairable Handle with care Fig 6 Fig 7 Reel disc assembly C washer C washer Flywheel BF Flywheel BR E E E F G G Main belt Reel base assembly Sub belt Motor assembly...

Page 12: ...ssembly 1 Unsolder the two wires m on the power switch on the side of the cassette mechanism assembly 2 Remove the screw I attaching the power switch Fig 9 Cassette mechanism assembly Soldering l H Mute switch board Rower switch Motor assembly Soldering m I Power switch Cassette mechanism assembly www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q...

Page 13: ... NR Sound Cruise Off Volume position is about 2V at speaker output with following conditions Playback the test tape VT721 Measuring conditions Amplifier section 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 stereo mode 1kHz 67 5kHz dev pilot 7 5kHz dev Output level 0dB 1µV 50Ω open terminal Power supply volta...

Page 14: ... 3 Remove the front chassis assembly 4 Remove the heat sink 5 Remove the main board 6 Reattach the heat sink with the screw B Refer to Disassembly method 7 Reattach the front panel assembly 8 Confirm that current is being carried by connecting an extension cord jig NOTE Available to connect to the CJ721 connector when installing the front panel CAUTION Be sure to attach the heat sink on the power ...

Page 15: ...ght adjusting screw a Head section view Cassette mechanism Surface Tape speed adjust Motor assembly Playback head Azimuth screw www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 16: ... and confirm 1kHz 10kHz 1 3dB 1kHz 63Hz 0 3dB When 10kHz is out of specification it will be necessary to read adjust the azimuth 1 2 3 Load VT724 1kHz and play it back in the reverse play mode Set the Rch output level to max Load VT703 10kHz and play it back in the forward play mode Adjust the Rch and Lch output levels to max with azimuth adjustment screw B In this case the phase difference should...

Page 17: ... B2 B3 B4 A1 A2 A3 A4 NC NC NC NC YL BL WH RD BK B1 B2 B3 B4 A1 A2 A3 A4 VI GY WH GN VI BK GY BK WH BK GN BK ACC 7 RD B4 16 YL A2 MEMORY 5 BL WH REMOTE B3 8 BK GND A4 2 VI B1 RR 10 VI BK A1 RR 1 GY B2 FR 9 GY BK A2 FR 4 WH B3 FL 12 WH BK A3 FL 3 GN B4 RL 11 GN BK A4 RL REMOTE Remote out MEMORY YL Yellow www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6...

Page 18: ...y 371 8543 Japan Victor Company of Japan Limited VPT Printed in Japan www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 19: ... Standard schematic diagrams 2 5 to 6 COPYRIGHT 2005 Victor Company of Japan Limited CD ROM No SML200504 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 20: ...such burrs in the case of preforming repair of this system Safety precaution www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 21: ...K ST MONO SD ST S METER FM OSC EO BAND IFC C IF C DI CL CE TAPEIN PROG Main amplifier section CP721 Relay board CP722 CN721 CP981 CJ921 LFO LFO RFO RFO LRO RRO CN901 CP901 CJ901 HEAD CJ701 CP701 LCD SO LCD SCK LCD CE KEY0 to KEY2 DETACH TO CD CHANGER CP751 CD LCH CD RCH IC751 BUS SCK SI SO BUS SCK BUS INT BUS SO BUS SI BUS I O L1 Block diagram w w w x i a o y u 1 6 3 c o m Q Q 3 7 6 3 1 5 1 5 0 9 ...

Page 22: ...RC102M T 47K 3 3K KRC102M T 1K QAU0394 001 27K 27K 0 QMFZ047 150 T 2SA1706 ST T KTA1267 YG T KTC3199 GL T KTC3199 GL T 2 2 50 0 001 1K 10K 1 5K 1K 0 1 2200 16 1N5401 TM 0 1 1K 100 100 1K 2SD2144S VW T 1SS119 041 T2 2SD2144S VW T 2 2K 2 2K 1SS119 041 T2 1SS119 041 T2 10 16 1SS119 041 T2 1 50 1 50 QGZ1601J1 15 4 7u 47u 47u 47u PT2319 L X 1SS119 041 T2 0 22 0 22 0 22 0 1 4 7K 0 1 47K 10K QAX0406 001Z...

Page 23: ... 330k QGB1214K1 06S 820p 820p 0 47 50 0 47 50 100 100 47 6 3 47 6 3 15k 15k 0 01 0 01 100 10 100 SHEET 1 SHEET 1 Head amplifier section w w w x i a o y u 1 6 3 c o m Q Q 3 7 6 3 1 5 1 5 0 9 9 2 8 9 4 2 9 8 T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 24: ... 270 SML 310LT MN X QLL0075 001 1 2K 1 2K 820 820 10k 10k 10k 220 QLL0075 001 S32 S31 S30 S29 S28 S27 S26 S25 S24 S23 S22 S21 S20 S19 COM1 COM2 COM3 S18 S17 CE S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 CLOCK S13 ACC5V S14 KEY0 S15 S16 S43 S42 S41 S40 S39 S38 S37 S36 S35 S34 S33 S47 S46 S45 S44 5V GND S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 10V S15 S16 S17 S18 S19 DATA S20 S21 S22 S23 S24 S25 S26 S27 S28 S29 ...

Page 25: ...991 C943 R263 R264 R265 Q989 R702 R703 CN901 R707 R708 R709 R710 R712 R713 R714 C709 R715 C710 R718 R719 R720 R721 R722 CJ921 R724 R725 R726 R727 R751 R752 R753 R754 R755 R756 R757 R758 R759 R760 R761 R762 R763 R764 R771 R772 R773 R774 R797 R783 R784 R785 R786 R789 R790 L981 R795 R796 R931 R973 R971 C12 R787 X701 CJ701 IC931 R10 D961 R996 R997 R998 R999 C712 C988 D990 R16 D3 C987 C10 D786 D785 R78...

Page 26: ...8 R639 R640 R641 R642 R643 R644 R645 R646 R647 R648 R649 R650 R651 R652 R653 R661 R662 R663 PL603 PL601 CP901 IC901 C104 C204 R103 R203 C105 C205 C101 C201 R104 R204 C103 C203 R101 R201 C102 C202 C901 R901 CJ901 CP721 CP722 Relay board Head amplifier board Reverse side Forward side Mechanism control board Switch board www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 ...

Page 27: ...yu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 28: ...tari machi Maebashi city 371 8543 Japan Victor Company of Japan Limited www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 29: ...embly and parts list Block No MP Electrical parts list Block No 01 03 Packing materials and accessories parts list Block No M3 3 2 3 5 3 10 3 14 Area suffix UF China MA132 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 30: ...board 37 38 38 48 30 31 28 57 26 25 24 29 59 23 22 35 36 34 32 33 28 58 27 39 46 42 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 31: ... 17 20 21 4 16 18 19 15 4 8 38 39 46 42 41 47 40 7 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 32: ...SPRING x3 29 FSJK3014 001 LIGHT LENS 30 GE20161 001A PRESET BUTTON 31 FSYH4036 031 SHEET 32 GE31024 005A UP DOWN BTN 33 GE31028 003A SSM BTN 34 GE31025 001A SEARCH BTN 35 GE31032 004A DETACH BTN 36 GE40202 003A COMPRESSION SPRING 37 GE10094 001A REAR COVER 38 VKZ4777 010 MINI SCREW x4 39 GE31348 001A LCD CASE 40 GE31349 001A LENS CASE 41 GE31350 001A LCD LENS 42 GE40232 001A LIGHTING SHEET 43 GE30...

Page 33: ...25 68 61 19 109 20 22 62 83 76 71 107 121 53 107 21 78 79 35 97 117 7 77 105 116 93 114 115 50 48 82 101 95 117 85 80 86 87 106 26 94 122 38 106 37 107 41 39 44 63 109 54 42 70 107 9 74 117 4 43 73 40 10 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoy...

Page 34: ...LER 57 1 0363 3007S HP ROLLER A 58 1 0363 3011S PROGRAM ROLLER 61 1 0036 4001S FF REW LEVER SP 62 1 0036 4002S LOCK LEVER SPG 63 1 0036 4003S GEAR LOCK ARM S 65 1 0036 4006S HEAD PLATE SPG 66 1 0036 4007S EJ CAM LOCK SPG 67 1 0036 4008S PROGRAM ARM SPG 68 1 0036 4010S ADJUST ARM SP A 69 1 0036 4011S ADJUST ARM SP B 70 1 0036 4015S DASH SPG 71 1 0036 4017S CHANGING ARM SP 72 1 0036 4023S CENTER PLT...

Page 35: ...0 2 1032 0025 C2S SCREW x2 121 2 1012 0040 C2S SCREW 122 2 1012 0030 F2S SCREW 123 1 0138 5002S AZIMUTH SCREW x3 Symbol No Part No Part Name Description Local www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 36: ...oint 1 2 Reverse side A 2 72 24 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 37: ...39 37 42 43 4 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 38: ...23Z MF CAPACITOR 0 082uF 50V J C236 QFV61HJ 823Z MF CAPACITOR 0 082uF 50V J C237 QFV61HJ 154Z MF CAPACITOR 0 15uF 50V J C238 QFV61HJ 154Z MF CAPACITOR 0 15uF 50V J C250 QERF1HM 225Z E CAPACITOR 2 2uF 50V M C260 QERF1HM 225Z E CAPACITOR 2 2uF 50V M C701 QDUB1HJ 270Y C CAPACITOR 27pF 50V J C702 QDCB1HJ 220Y C CAPACITOR 22pF 50V J C703 QERF0JM 107Z E CAPACITOR 100uF 6 3V M C704 QFV61HJ 224Z MF CAPACI...

Page 39: ...Y C RESISTOR 100Ω 1 4W J R788 QRE141J 242Y C RESISTOR 2 4kΩ 1 4W J R789 QRE141J 104Y C RESISTOR 100kΩ 1 4W J R790 QRE141J 474Y C RESISTOR 470kΩ 1 4W J R792 QRE141J 6R8Y C RESISTOR 6 8Ω 1 4W J R795 QRE141J 183Y C RESISTOR 18kΩ 1 4W J R796 QRE141J 473Y C RESISTOR 47kΩ 1 4W J R797 QRE141J 123Y C RESISTOR 12kΩ 1 4W J R931 QRE141J 100Y C RESISTOR 10Ω 1 4W J R941 QRE141J 332Y C RESISTOR 3 3kΩ 1 4W J R97...

Page 40: ... 001X TACT SWITCH S611 NSW0206 001X TACT SWITCH S612 NSW0206 001X TACT SWITCH S613 NSW0206 001X TACT SWITCH S614 NSW0206 001X TACT SWITCH S615 NSW0206 001X TACT SWITCH S616 NSW0206 001X TACT SWITCH S617 NSW0206 001X TACT SWITCH S618 NSW0206 001X TACT SWITCH Symbol No Part No Part Name Description Local IC901 UPC1228HA IC C101 QDGB1HK 821Y C CAPACITOR 820pF 50V K C102 QEKJ1HM 474Z E CAPACITOR 0 47u...

Page 41: ...yu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 42: ...RDs are available P2 A3 A4 A5 A6 A7 A8 P7 P6 P1 P6 A1 A2 P3 P5 A15 A9 A10 A11 A12 A13 P4 A14 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 43: ... 12 QYWWS53A008ZA WASHER 0mm 5 3mm x A 13 GE40130 202A HOOK x2 A 14 FSJB3002 00C HARD CASE A 15 QAM0089 002 16P CORD ASSY KIT SRW 5088UF SCREW PART KIT A9 A10 A11 A12 A13 P 1 QPC03004315P POLY BAG 30cm x 43cm P 2 FSPG4002 001 POLY BAG P 3 QPA00801205 POLY BAG 8cm x 12cm P 4 FSYH4036 068 SHEET P 5 QPA01003003 POLY BAG 10cm x 30cm P 6 GE10070 203A EPS CUSHION P 7 GE31625 001A INNER CARTON www xiaoyu...

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