JVC KS-FX460R User manual

SERVICE MANUAL
CASSETTE RECEIVER
No.49632
Mar. 2001
COPYRIGHT 2000 VICTOR COMPANY OF JAPAN, LTD.
KS-FX460R /KS-FX463R
KS-FX460R/KS-FX463R
Area Suffix
EX Central Europe
This model is KS-FX460R/KS-FX463R EX that is added to the preceding model,
theKS-FX460R/KS-FX463R E . Therefore the service manual for this model is
consisting of Parts list only.
For others, please refer to the service manual of KS-FX460R/KS-FX463R E
(issue No.49578).

KS-FX460R/KS-FX463R
VICTOR COMPANY OF JAPAN, LIMITED
MOBILE ELECTRONICS DIVISION
PERSONAL & MOBILE NETWORK BUSINESS UNIT. 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan
(No.49632) 200103
E Version Q'ty
EX Version
Parts number
Block No.M4MM
Iten Parts name
A 2
A 3
INST.BOOK
(LANGUAGE)
INSTALL.MANUAL
(LANGUAGE)
GET0039-002A
(SPA,ITA,SWE,FIN)
GET0039-005A
(SWE,FIN)
-----------------------
---------------------------
Parts list (Accessories)
1
1
A
P3-15
E Version EX Version
Parts number
Block No.M3MM
Iten Parts name
P1 POLY BAG FSPG4002-001
(Q'TY 2)
FSPG4002-001
(Q'TY 1)
Parts list (Packing)
A
P3-15

SERVICE MANUAL
CASSETTE RECEIVER
No.49578
Dec. 2000
COPYRIGHT 2000 VICTOR COMPANY OF JAPAN, LTD.
KS-FX460R / KS-FX463R
KS-FX460R/KS-FX463R
Area Suffix
E Continental Europe
Contents
Safety precaution
Disassembly method
Adjustment method
Description of major ICs
1-2
1-3
1-13
1-17~22
KS-FX460R
GREEN
GREEN
Difference point
LCD
LED (without
power button)
KS-FX463R
AMBER
AMBER

KS-FX460R/KS-FX463R
1-2
!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

KS-FX460R/KS-FX463R
1-3
Press the eject button in the lower right part of the
front panel. Remove the front panel assembly from
the body.
1.
Removing the front panel assembly
(See Fig.1)
Prior to performing the following procedure, remove
the front panel assembly.
Release the four joint tabs aon both sides of the
front chassis assembly and remove the front chassis
assembly toward the front.
1.
Removing the front chassis assembly
(See Fig.2 and 3)
Disassembly method
<Main body>
Fig.1
Fig.2
Fig.3
Front panel assembly
Eject button
Tab a
Tab a
Front chassis assembly
Front chassis
assembly
Heat sink Tab a
Tab a

KS-FX460R/KS-FX463R
1-4
Remove the three screws Aon the left side of the
body.
1.
Removing the heat sink (See Fig.4)
Prior to performing the following procedure, remove
the front panel assembly, the front chassis assembly
and the heat sink.
Turn over the body and unjoint the five joints bwith
the bottom cover and the body using a screwdriver.
1.
Removing the bottom cover
(See Fig.5 and 6)
Fig.4
Fig.5
Fig.6
Heat sink
AA
Joints b
Joints b
Joint b
Joints b
Joints b
Joint b
Bottom cover
Bottom cover
Rear panel
Rear panel

KS-FX460R/KS-FX463R
1-5
Prior to performing the following procedure, remove
the front panel assembly, the front chassis assembly,
the heat sink and the bottom cover.
Remove the screw B, the two screws C and the two
screws Dattaching the rear bracket on the back of
the body. Remove the rear bracket.
Remove the two screws Eattaching the main board
on the bottom of the body. Disconnect connector
CN901 and CN902 on the main board in the
direction of the arrow.
1.
2.
Removing the main board
(See Fig.7 and 8)
Prior to performing the following procedure, remove
the front panel assembly, the front chassis assembly,
the heat sink, the bottom cover and the main board.
Remove the four screws Fattaching the cassette
mechanism section on the back of the top chassis.
1.
Removing the cassette mechanism section
(See Fig.9)
Fig.7
Fig.8
Fig.9
Rear bracket
B
D
D
C
C
Main board
E
E
CN902
CN901
Cassette mechanism section
F
F
FF
Top chassis

KS-FX460R/KS-FX463R
1-6
Prior to performing the following procedure, remove
the cassette mechanism section.
Disconnect the wire from connector CJ901 on the
head amplifier board.
Remove the screw G and slide the head amplifier
board in the direction of the arrow to unjoint the two
joints cwith the mechanism bracket.
1.
2.
Removing the head amplifier board
(See Fig.10)
Prior to performing the following procedure, remove
the cassette mechanism section.
Disconnect the wire from connector CJ902 on the
motor board.
Remove the screw Hand slide the motor board in
the direction of the arrow to unjoint the joint dwith
the mechanism bracket.
1.
2.
Removing the motor board (See Fig.11)
Prior to performing the following procedure, remove
the cassette mechanism section, the head amplifier
board and the motor board.
Remove the four screws Ion the bottom of the
cassette mechanism section.
1.
Removing the cassette mechanism assembly
(See Fig.12)
Fig.10
Fig.11
Fig.12
G
Joint c
Joint c
Head amplifier board
CJ901
Motor board
CJ902
Joint d
H
Mechanism bracket
I
I
I

KS-FX460R/KS-FX463R
1-7
Prior to performing the following procedure, remove
the front panel assembly.
Remove the four screws Jattaching the rear cover
on the back of the front panel assembly.
Unjoint the six joints ewith the front panel and the
rear cover.
Remove the control switch board on the back of the
front panel.
1.
2.
3.
Removing the control switch board
(See Fig.13 to 15)
Fig.13
Fig.14
Fig.15
J
JJ
J
Rear cover
Joints e
Joints e
Front panel
Rear cover
Cntrol switch board
Front panel

KS-FX460R/KS-FX463R
1-8
Prior to performing the following procedures, remove
the head amplifier board, the relay board and the
mechanism bracket.
<Cassette mechanism assembly>
Unsolder the three wires aon the direction switch
board.
Remove the one screw Aattaching the direction
switch board.
1.
2.
Removing the direction switch board
(See Fig.1)
Remove the screw Battaching the FF / REW lever
assembly on the back of the cassette mechanism
assembly.
Remove the screw Con the upper side of the FF /
REW lever assembly.
Lift and pull forward the FF / REW lever assembly to
disengage the joints b, c, dand e.
1.
2.
3.
Removing the FF / REW lever assembly
(See Fig.1)
Reattach the FF / REW lever assembly to the joint c
on the back of the chassis.
Reattach the pinch-roller shaft e, the change lever d
and the return link eto the chassis.
1.
2.
Reattaching the FF / REW lever assembly
(See Fig.1)
C
FF / REW lever assembly
Joint c
Joint b
B
A
Direction switch board
Joint d
Joint e
Solding a
Fig.1

KS-FX460R/KS-FX463R
1-9
Prior to performing the following procedure, remove
the direction switch board and the FF / REW lever
assembly.
Remove the screw Dattaching the playback head.
Remove the C washer and pull out the FF roller.
Remove the S support plate, the A arm spring (a)
and (b), the playback head.
1.
2.
3.
Removing the playback head (See Fig.2)
The A arm spring (a) differs from the A
arm spring (b).
ATTENTION:
Prior to performing the following procedure, remove
the direction switch board and the FF / REW lever
assembly.
Remove the P arm spring (f) in the pinch-roller (F)
assembly from the chassis.
Remove the P arm spring (r) in the pinch-roller (R)
assembly from the chassis.
Draw out the pinch roller (F) and (R) assembly from
the shaft.
1.
2.
3.
Removing the pinch-roller (R) and (F)
assembly (See Fig.2)
The P arm spring (f) differs from the P
arm spring (r).
ATTENTION:
The pinch roller (F) assembly differs
from the pinch roller (R) assembly.
ATTENTION:
A arm spring (b) A arm spring (a)
Pinch-roller (R) assembly Pinch-roller (F) assembly
Shaft Shaft
S support plate
D
C washer
P arm spring (f)
P arm spring (r)
Remove the P arm spring (f)
from the chassis.
Remove the P arm spring (r)
from the chassis.
Playback head
FF roller
Fig.2

KS-FX460R/KS-FX463R
1-10
Prior to performing the following procedure, remove
the FF / REW lever assembly.
From the rear of the unit, bend the two tabs f
outwards and disengage the two joints gin the
direction of the arrow.
Push the eject lever and remove the cassette holder
from the playback head. Disengage the two joints h
of the cassette hanger / cassette holder and the eject
lever in the direction of the arrow.
Lift the cassette hanger / cassette holder and disengage
the joint iof the return link and the eject lever.
1.
2.
3.
Removing the cassette hanger / cassette
holder (See Fig.3)
Unsolder the two wires jon the motor assembly.
1.
Turn over the cassette mechanism assembly and
remove the main belt and the sub-belt from the
motor pulley.
2.
Remove the two screws Gattaching the motor
assembly.
3.
Removing the motor assembly
(See Fig.5)
To replace the sub-belt, remove the
main belt and the sub-belt from the
motor pulley. Then remove the three
screws Eand one screw F. Replace
with a new sub-belt while lifting the reel
base assembly slightly.
ATTENTION:
Prior to performing the following procedure, remove
the FF / REW lever assembly and the cassette
hanger / cassette holder.
Remove the C washer and pull out reel disc assembly.
1.
Removing the reel disc assembly
(See Fig.4)
Replace with a new C washer when
reattaching.
ATTENTION:
The main belt can now be removed.
ATTENTION:
Cassette holder
Cassette hanger
Return link
Joint i
Eject lever
Joint h
Joint h
Joint g
Joint g Tab f
Tab f
Reel disc assembly
Flywheel (BF)
Flywheel (BR)
E
E
E
F
G
G
Main-belt
Reel base assembly
Sub-belt
Motor assembly
Motor pulley
Solding j
Fig.3
Fig.4
Fig.5
C washer
C washer
Chassis

KS-FX460R/KS-FX463R
1-11
Raise the part kof the reel base assembly slightly
and remove the selector link (B) on the front side of
the cassette mechanism assembly by turning it as
shown in Fig.10.
Remove the three screws Eand the one screw F
on the underside of the cassette mechanism
assembly.
1.
2.
Removing the reel base assembly
(See Fig.5 and 6)
Prior to performing the following procedure, remove
the cassette hanger / cassette holder.
From the upper side of the cassette mechanism
assembly, remove the C washer from each shaft of
the flywheel (BF) and (BR).
Turn over the cassette mechanism assembly and
remove the main belt. Pull out the flywheel (BF) and
(BR) downward respectively.
1.
2.
Removing the Flywheel (BF) and (BR)
assembly (See Fig.4 and 5)
The reel base assembly is not
repairable. Handle with care.
ATTENTION:
Selector link (B).
Inside of the reel base assembly
Reel disc assembly
Flywheel (BF)
Flywheel (BR)
E
E
E
F
G
G
Main-belt
Reel base assembly
Sub-belt
Motor assembly
Motor pulley
Solding j
Fig.4
Fig.5
Fig.6Fig.7
C washer
C washer
Pinch-roller (R) assembly
Turn the selector link (B).
k

KS-FX460R/KS-FX463R
1-12
Unsolder the two wires lon the mute switch board on
the back of the cassette mechanism assembly.
Remove the screw Hattaching the mute switch
board.
1.
2.
Removing the mute switch board
(See Fig.8)
Prior to performing the following procedure, remove
the motor assembly.
Unsolder the two wires mon the power switch on the
side of the cassette mechanism assembly.
Remove the screw Iattaching the power switch.
1.
2.
Removing the power switch (See Fig.9)
Cassette mechanism assembly
Solding l
HMute
switch board
Solding m
IRower switch
Cassette mechanism assembly
Rower switch
Motor assembly
Fig.8
Fig.9

KS-FX460R/KS-FX463R
1-13
Adjustment method
Test Instruments reqired for adjustment
1. Digital osclloscope(100MHz)
2. Frequency Counter meter
3. Electric voltmeter
4. Wow & flutter meter
5. Test Tapes
VT724 ....................... for DOLBY level measurement
VT739 ............ For playback frequency measurement
VT712 ....For wow flutter & tape speed measurement
VT703 ..................... For head azimuth measurement
6. Torque gauge .................... Cassette type for CTG-N
(mechanism adjustment)
Measuring conditions(Amplifier section)
Power supply voltage .............. DC14.4V (10.5 - 16V)
Load impedance ........... 4 (2Speakers connection)
Line out............................................................ 20k
Standard volume position
Balance and Bass,Treble volume .Fader
:Center(Indication"0")
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 recieving.
FM mono mode 97.9MHz/66dB,INT/400Hz,22.5kHz
deviation pilot off mono
FM stereo mode 1kHz,67.5kHz dev. pilot7.5kHz dev.
Output level 0dB(1 V,50 /open terminal)

KS-FX460R/KS-FX463R
1-14
Playback head
Head azimuth screw
Fixed screw
Height adjusting screw c
Height adjusting screw b
Height adjusting screw a
Arrangement of adjusting & test points
Head section view
Cassette mechanism
(Surface)
Tape speed adjust
Motor assembly
Playback head
Azimuth screw

KS-FX460R/KS-FX463R
1-15
Extension cord
: EXTKSRT002-6P
EXTKSRT002-6P
Front panel assembly
Main board
Cassette mechanism
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.
3. Extension cord : EXTKSRT002-6P ( 6 pin extension cord ) For connection between mechanism assembly
and main board assembly.
Check for mechanism driving section such as motor ,etc..
Disassembly method
1. Remove the bottom cover.
2. Remove the front panel assembly.
3. Remove the top cover .
4. Install the front panel.
5. Confirm that current is being carried by connecting
an extension cord jig.
Note
Available to connect to the CN701 connector when in-
stalling the front panel.

KS-FX460R/KS-FX463R
1-16
Mechanism adjustment section
Item Adjusting & Confirmation Methods Adjust Std. Value
"Head Height Adjustment"
Note
Adjust the azimuth directly. When you adjust the height us-
ing a mirror tape, remove the cassette housing from the
mechanism chassis.
After installing the cassette housing, perform the azimuth
adjustment.
1.load the mirror tape ( SCC-1659 ). Adjust with height
adjustmentscrew (a) and azimuth adjustment screw (b) so
that line "A" of the mirror tape runs in the center between
Lch and Rch in the reverse play mode.
2.After switching from REV to FWD then to REV, check that
the head position set in procedure "1" is not changed.
*If the position has shifted, adjust again and check.
3.Adjust the azimuth screw (b) so that line "B" of the mirror
tape runs in the center between Lch and Rch in the forward
play mode.
"Head Azimuth Adjustment"
1.Load the test tape ( VT724: 1kHz ) and play it back in the
reverse play mode. set the Rch output level to maximum.
2.Load the test tape ( VT703: 10kHz ) and play it back in the
forward play mode. Adjust the Rch and Lch output levels
tomaximum, with azimuth adjustment screw (b).
In this case, the phase difference should be within 45 .
3.Engage the reverse mode and adjust the output level to
maximum, with azimuth adjustment screw (c).
*The phase difference should be 45_Kor more.
4.When switching between forward and reverse modes, the
difference between channels should be within 3dB.
*Between FWD Lch and Rch, REV Lch and Rch.
5.When the test tape ( VT721 : 315Hz ) is played back, the
level difference between channels should be within 1.5dB.
1.Check to see if the reading of the frequency counter & Wow
flutter meter is within 2940-3090 Hz( FWD/REV ), and less
than 0.35% ( JIS RMS ).
2.In case of out of specification, adjust the motor with a built-
in volume resistor.
1.Play the test tape ( VT724 : 1kHz ) back and set the volume
position at 2V.
2.Play the test tape ( VT739 )back and confirm 0 +3dB at1kHz/
-
8kHz and -4+2dB at 1kHz/125Hz.
3.When 8kHz is out of specification, it will be necessary to
read adjust the azimuth.
Head shield
Head shield
The head is at low position
during FWD.
The head is at height position
during REV.
A Line
B Line
Phase
screw (c) screw (a)
screw (b)
Head azimuth
screw Fixed screw
045
Built-in
volume resistor Tape Speed
2940-3090Hz
Wow&Flutter
Less than
0.35%
(JIS RMS)
Speaker out
1kHz/8kHz
: 0dB_}3dB,
125Hz/1kHz
: -4dB+2dB,
1.Head azimuth
2.Tape Speed and
Wow & Flutter
3.Playback
Frequency
response

KS-FX460R/KS-FX463R
1-17
AN80T05LF (IC961) : Regulator
1.Terminal layout & Block diagram
2.Pin function
Pre
Drive
Thermal
Protection
Reference Voltage
Pre
Drive
AMP
Out
ASO & Peak
Current Protection
AMP
Out
Pre
Drive Pre Drive Pre
Drive
1 2 3 4 5 6 7 8 9 10 11 12
ILL
10V MODE2 MODE1 STB VDD 5.6V AMP VCC ANT COM 8.7V AM 8.7V FM 8.7V GND
1
2
3
4
5
6
7
8
9
10
11
12
ILL
MODE2
MODE1
STB
VDD
AMP
VCC
ANT
COM
AM
FM
GND
10V power supply for illumination.
When 5V is input,becomes AM. and the antenna output is turned on.
When 5V is input,becomes AM. and the output of FM is switched.
When 5V is input, outputs to ILL,COM,and AMP. It is 0V usually.
5.6V power supply.
Power supply supply to remote amplifier
Back up. connects with ACC with it.
Power supply supply to auto antenna.
8.7V power supply.
The power supply of 8.7V to AM.
The power supply of 8.7V to FM.
Ground
Pin
No.
Symbol Function
Description of major ICs

KS-FX460R/KS-FX463R
1-18
HA13158A (IC941) : Power amp
1. Pin layout
2. Block diagram
IN1
IN2
IN3
IN4
STBY
2
1
11
13
23
10
TAB
PROTECTOR (ASO
SURGE, TSD)
INPUTBUFFER1
INPUTBUFFER2
INPUTBUFFER3
INPUTBUFFER4
AMP1
AMP2
AMP3
AMP4
MUTE
PVCC1PVCC2
INVCC
+
-
+
-
+
-
+
-
12 22
14 18 6
3
4
5
7
8
9
15
16
17
19
20
21
1 ~ 23