JVC KS-FX12 Service Manual
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JVC KS-FX12 Service Manual

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Download this manual See also: Service Manual, Instruction Manual
SERVICE MANUAL
Contents
Safety precaution ------------------------------------- 1-2
Instructions --------------------------------------------- 1-3 - 11
Disassembly method -------------------------------- 2-1
Adjustment method ---------------------------------- 2-8
Description of major ICs ---------------------------- 2-12
CASSETTE RECEIVER
KS-FX12
KS-F150
COPYRIGHT
2000 VICTOR COMPANY OF JAPAN, LTD.
U ............... Other Areas
Block diagram ----------------------------------------- 2-18
Standard schematic diagrams -------------------- 2-19
Printed circuit boards -------------------------------- 2-22
Parts list ------------------------------------------------- 3-1 - 11
KS-F150
KS-FX12
SYSTEM CPU
LC72362N
HEAD AMP
UPC1228HA
PLAYBACK HEAD
1-0036-7016S
Area Suffix
No.49552
Mar. 2000

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  • Page 1 KS-F150 KS-FX12 SERVICE MANUAL CASSETTE RECEIVER KS-FX12 KS-F150 SYSTEM CPU LC72362N HEAD AMP UPC1228HA PLAYBACK HEAD 1-0036-7016S Area Suffix U ....Other Areas Contents Safety precaution ------------------------------------- 1-2 Block diagram ----------------------------------------- 2-18 Instructions --------------------------------------------- 1-3 - 11 Standard schematic diagrams -------------------- 2-19...
  • Page 2 KS-F150 KS-FX12 Safety Precaution ! CAUTION 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. Feature Check List Model KS-FX12...

  • Page 3: Table Of Contents

    This section is extracted from Instructions KS-FX12 instraction manual. Thank you for purchasing a JVC product. Please read all instructions carefully before operation, to ensure your complete understanding and to obtain the best possible performance from the unit. CONTENTS BASIC OPERATIONS ............ 3...

  • Page 4: Storing Stations In Memory

    KS-F150 KS-FX12 Manual preset Storing stations in memory You can preset up to 6 stations in each band (FM1, FM2, FM3 and AM) manually. You can use one of the following two methods to store broadcasting stations in memory. Example: Storing an FM station of 88.3 MHz into the preset number 1 of the FM1 band.

  • Page 5: Tape Operations

    KS-F150 KS-FX12 TAPE OPERATIONS SOUND ADJUSTMENTS Listening to a tape Turning on/off the loudness function The human ear is less sensitive to low and high frequencies at low volumes. The loudness function can boost these frequencies to produce a well-balanced sound at low volume levels.

  • Page 6: Other Main Functions

    To fast forward or reverse the track We recommend that you use one of the CH-X series with your unit. If you have another CD automatic changer, consult your JVC car audio dealer for connections. ¢, while playing a CD, to fast forward the track.

  • Page 7: Selecting Cd Playback Modes

    KS-F150 KS-FX12 MAINTENANCE To extend the lifetime of the unit Selecting CD playback modes This unit requires very little attention, but you will be able to extend the life of the unit if you follow the instructions below. To clean the heads •...
  • Page 8 !"#$%&'()*+,-%./0 123.45 car. If you have any questions or require information regarding !"#$%&JVC !"#$%&'()*+,- installation kits, consult your JVC car audio dealer or a company supplying kits. !" !"#$% & !"#$ Before mounting: Press (Control Panel Release button) to detach the control panel.
  • Page 9 KS-F150 KS-FX12 • When installing the unit without using the sleeve • When using the optional stay !"#$%&'($ • • !"# • • • • In a Toyota for example, first remove the car radio and install the unit in its place.

  • Page 10: Electrical Connections

    !./0123 • • • Replace the fuse with one of the specified rating. If the fuse !"#$%&' blows frequently, consult your JVC car audio dealer. !"#$ • • • If noise is a problem... This unit incorporates a noise filter in the power circuit. However, !"#$%&'()*+,-./0 12345067...

  • Page 11: Troubleshooting

    KS-F150 KS-FX12 !"#$%&'()* PRECAUTIONS on power supply and speaker connections: !"#$%&'&()*+,-./0123456 • • • DO NOT connect the speaker leads of the power cord to !"#$%&"' !"#$ !" • • • the car battery; otherwise, the unit will be seriously ! 12V !"#$...
  • Page 12 KS-F150 KS-FX12 << M E M O >> 1-12...
  • Page 13 KS-F150 KS-FX12 Disassembly Method Detaching the Front Panel Unit Front panel unit ( See Fig.1 ) Push the Release button in the direction of arrow to detach the front panel unit. Push the release button Fig. 1 Bottom cover Front chassis Removing the Front Chassis ( See Fig.
  • Page 14 KS-F150 KS-FX12 Removing the Heat Sink ( See Fig. 5 ) Heat sink 1. Removing the front chassis. 2. Removing the bottom cover. 3. Remove the three screws ( 1 and 1` ) retaining the heat sink. Fig. 5 Removing the Main Board Assembly ( See Fig.
  • Page 15 KS-F150 KS-FX12 Cassette mechanism Removing the Cassette Mechanism assembly ( See Fig. 8 ) 1. Removing the front chassis. 2. Removing the bottom cover. 3. Removing the heat sink. 4. Removing the main board assembly. 5. Remove the four screws ( 4 ) retaining the cassette mechanism.
  • Page 16 KS-F150 KS-FX12 Head amplifier board Removing the Head Amplifier Board ( See Fig. 12 ) 1. Removing the front chassis. CJ901 2. Removing the bottom cover. 3. Removing the heat sink. 4. Removing the main board assembly. 5. Removing the cassette mechanism.
  • Page 17 KS-F150 KS-FX12 <Cassette Mechanism Sections> Reel base assembly Cassette hanger Center plate Motor assembly Sub-belt Direction switch board FF Lever Main belt Flywheel Flywheel Cassette holder assembly(F) assembly(B) REW Lever Fig. 1 Fig. 2 Removing the Main Parts of Cassette Mechanism 1.
  • Page 18 KS-F150 KS-FX12 Note : The reel disk and capstan can now be replaced. C Washer 1-1 Remove the C washer at the top of the reel disk Reel disk to remove the reel disk. Capstan caution : Replace with a new C washer after E Washer repairing.
  • Page 19 KS-F150 KS-FX12 Pinch-roller (R) Pinch-roller (F) E Washer E Washer assembly assembly S. support plate A.arm A.arm spring(B) spring(A) Pinch-roller shaft Pinch-roller shaft FF Roller P. arm spring(F) P. arm spring(R) Remove the P. arm spring (F) from the chassis.
  • Page 20 KS-F150 KS-FX12 Adjustment Method Test Instruments reqired for adjustment Standard volume position 1. Digital osclloscope(100MHz) Balance and Bass,Treble volume .Fader 2. Frequency Counter meter :Center(Indication"0") 3. Electric voltmeter Loudness,Dolby NR,Sound,Cruise:Off 4. Wow & flutter meter Volume position is about 2V at speaker output with 5.
  • Page 21 KS-F150 KS-FX12 Arrangement of Adjusting & Test points Cassette mechanism (Surface) Motor assembly Tape speed adjust Playback head Azimuth screw Head section view Fixed screw Head azimuth screw Playback head Height adjusting screw a Height adjusting screw c Height adjusting screw b...
  • Page 22 KS-F150 KS-FX12 Information for using a Car Audio Service Jig 1. For 1995 and 1996 , we're advancing efforts to make our extension cords common for all car audio products. Please use this type of extension cord as follows. 2. As a U-shape type top cover is employed, this type of extension cord is needed to check operation of the mechanism assembly after disassembly.
  • Page 23 KS-F150 KS-FX12 Mechanism Adjustment Section Item Adjusting & Confirmation Methods Adjust Std. Value 1.Head azimuth "Head Height Adjustment" Note Adjust the azimuth directly. When you adjust the height us- A Line ing a mirror tape, remove the cassette housing from the mechanism chassis.
  • Page 24 KS-F150 KS-FX12 Description of major ICs UPC1228HA (IC901) : Head Amplifier HA13158 (IC981) : BTL Amplifier ANP1 NFB1 OUT1 OUT2 NFB2 ANP2 UPC1228HA 2-12...
  • Page 25 KS-F150 KS-FX12 LC72362N-9595 (IC701) : System Controller 1.Terminal Layout 24 - 1 41 - 64 2.Description Symbol Function Function Symbol Crystal oscillator Non connect To GND Non connect J BUS SI Bus serial data input from CP751 Non connect J BUS SO...

  • Page 26: Block Diagram

    KS-F150 KS-FX12 TEA6320T (IC931) : E.volume 1.Terminal Layout OUTRR OUTLR OUTRF OUTLF Vref MUTE CD-CH TAPE TUNER 2.Block Diagram MUTE VOLUME 2 FUNCTION 0 to 55 dB ZERO CROSS BALANCE DETECTOR FENDER REAR POWER SUPPLY VOLUME 1 BASS TREBLE +20 to -31 dB...
  • Page 27 KS-F150 KS-FX12 3.Pin Functions Symbol Functions Serial data input/output. Ground. OUTLR output left rear. OUTLF output left front. Treble control capacitor left channel or input from an external equalizer. Bass control capacitor leftchannel or output to an external equalizer. Bass control capacitor left channel.
  • Page 28 KS-F150 KS-FX12 AN80T05 (IC781) : Regulator 1.Block Diagram NC TUNER FM/AM POWER 5V REMOTE MEMORY NC 2.Pin Functions Symbol Functions Not used Output selector of AM and ANT. TUNER Output selector for AM or FM or both outputs is off.
  • Page 29 KS-F150 KS-FX12 LC75823W (IC651) : LCD Driver 1.Terminal Layout 2.Block Diagram 48 - 33 1 - 16 3.Pin Function Functions Symbol 1 - 9 NOT USED S10 - S52 10 - 52 Segment outputs that display data transferred from serial data.
  • Page 30 KS-F150 KS-FX12 Block Diagram 2-18...
  • Page 31 KS-F150 KS-FX12 Stndard Schematic Diagrams Head amplifier circuit section Tape PB/Main Signal 2-19...
  • Page 32 KS-F150 KS-FX12 Receiver & System control circuit section FM Radio Signal AM Radio Signal CD Signal Tape PB/Main Signal 2-20...
  • Page 33 KS-F150 KS-FX12 LCD driver & Operation switch circuit section 2-21...
  • Page 34 KS-F150 KS-FX12 Printed Circuit Boards Main boards : No. 0 2-22...
  • Page 35 KS-F150 KS-FX12 LCD Driver & Operation switch board : No. (Solder side) (Parts side) 2-23...
  • Page 36 KS-F150 KS-FX12 Cassette mchanism boards : No. Mute Board Direction swith Board 2-24...

  • Page 37: Parts List

    KS-F150 KS-FX12 PARTS LIST [ KS-FX12 ] [ KS-F150 ] * All printed circuit boards and its assemblies are not available as service parts. Area Suffix U ....Other Areas - Contents - 3 - 2 Exploded view of general assembly and parts list ------------------------------------------...
  • Page 38 KS-F150 KS-FX12 Exploded view of general assembly and parts list Block: No. M 1 M M...
  • Page 39 Block No. M1MM Parts number Parts name Q'ty Description Item Area FSJC3013-01A F.PANEL ASSY 1 KS-F150 FSJC3013-01B F.PANEL ASSY 1 KS-FX12 ZCKSFX12J-FB FRONT CHAS.ASSY 1 KS-FX12 ZCKSF150J-FB FRONT CHAS.ASSY 1 KS-F150 FSJC1055-001 FRONT SHASSIS FSJC4003-029 CASSETTE LID 1 KS-F150 FSJC4003-027...
  • Page 40 KS-F150 KS-FX12 Cassette mechanism assembly and parts list VDL3650-201M Block: No. M 2 M M Grease SW-522B SW-902 FG-84M CFD-409 EP-56 SW-522B SW-522B SW-522B CFD-409 SW-522B FG-84M FG-84M SW-902 SW-522B FG-84M SW-522B EP-56 SW-522B EP-56 SW-522B CFD-409 SW-902 SW-902 SW-522B...
  • Page 41 KS-F150 KS-FX12 Parts list (Cassette mechanism) Block No. M2MM Parts number Parts name Q'ty Description Item Area X-0036-1001S MAIN CHASSIS AS X-0036-6082S HEAD PLATE ASSY X-0036-1009S REEL BASE ASS'Y X-0036-1010S FR CHANGE ARM A X-0036-1019S EJ.CAM LOCK ASY X-0036-6077S LEVER BKT ASS'Y...
  • Page 42 HEAD 1 P-7542-CF-0358 1-0058-7013S POWER SW 1 MQS-4S 1-0036-7007S SLIDE SW 1-0138-7002S MUTE PWB 1-0138-7087S MUTE SW 1-0036-7088S 5P WIRE ASY(JVC 1-0036-7089S 6P WIRE ASY(JVC 2-1711-5040-16S E RING 3 1.5 2-1711-6032-96S E RING 2 1.6X3.2 2-1712-0050-16S E RING 2-1712-5060-16S E RING 3 2.5...

  • Page 43: Electrical Parts List

    KS-F150 KS-FX12 Electrical parts list Main board Block No. Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area QDX11EK-223Z C CAPACITOR C 933 QER41AM-107 E CAPACITOR 100MF 20% 10V C 934 QER41CM-476 E CAPACITOR 47MF 20% 16V...
  • Page 44 KS-F150 KS-FX12 Main board Block No. Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area KRC102M-T D.TRANSISTOR R 712 QRE141J-332Y C RESISTOR KEY2 Q 161 2SD2144S/VW/-T TRANSISTOR REAR R 713 QRE141J-332Y C RESISTOR KEY1 Q 261...
  • Page 45 KS-F150 KS-FX12 LCD / switch board Block No. Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area C 651 NCB21EK-104X C CAPACITOR S 606 NSW0066-001X TACT SWITCH C 652 NBE20JM-475X TS E CAPACITOR S 607...
  • Page 46 KS-F150 KS-FX12 Packing materials and accessories parts list Block: No. M 3 M M A1 , A2 Block: No. M 4 M M A5 ~ A9 3-10...
  • Page 47 ENG / SPA / CHI / ARA / POR FSUN3096-T181 INSTALL MANUAL (KS-F150) ENG / SPA / CHI / ARA / POR FSUN3098-T181 INSTALL MANUAL (KS-FX12) ENG / SPA / CHI / ARA / POR VKZ4027-202 PLUG NUT VKH4871-001SS MOUNT BOLT...
  • Page 48 KS-F150 KS-FX12 VICTOR COMPANY OF JAPAN, LIMITED MOBILE ELECTRONICS DIVISION,10-1,1chome,Ohwatari-machi,Maebashi-city371-8543,Japan Printed in Japan (No.49552) 200003(M)

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