Safety precaution
Disassembly method
Adjustment method
Description of major ICs
COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.
1- 2
1- 3
1-12
1-15~23
No.49677
Feb. 2002
KS-FX611
Safety precaution
!
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.
1-2
Disassembly method
<Main body>
Removing the front panel assembly
(See Fig.1)
1.
Press the eject button in the lower right part of the
front panel. Remove the front panel assembly from
the body.
Removing the front chassis assembly
(See Fig.2 and 3)
KS-FX611
Front panel assembly
Eject button
Fig.1
Tab a
Prior to performing the following procedure, remove
the front panel assembly.
1.
Release the four joint tabs a on both sides of the
front chassis assembly and remove the front chassis
assembly toward the front.
Tab a
Front chassis assembly
Heat sink
Fig.2
Tab a
Tab a
Front chassis
assembly
Fig.3
1-3
KS-FX611
Removing the heat sink (See Fig.4)
1.
Remove the three screws A on the left side of the
body.
Removing the bottom cover
(See Fig.5 and 6)
Prior to performing the following procedure, remove
the front panel assembly, the front chassis assembly
and the heat sink.
1.
Turn over the body and unjoint the five joints b with
the bottom cover and the body using a screwdriver.
Joint b
A
Joints b
Bottom cover
Heat sink
Fig.4
Rear panel
Fig.5
A
Bottom cover
Joints b
Joints b
1-4
Joints b
Joint b
Rear panel
Fig.6
KS-FX611
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 and the bottom cover.
1.
Remove the screw B, the five screws C and the two
screws D attaching the rear bracket on the back of
the body. Remove the rear panel.
2.
Remove the two screws E attaching the main board
on the bottom of the body. Disconnect connector
CP701 on the main board in the direction of the
arrow.
D
E
C
Rear panel
Fig.7
C
Main board
B
C
D
E
Removing the cassette mechanism section
(See Fig.9)
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.
1.
Remove the four screws F attaching the cassette
mechanism section on the back of the top chassis.
Fig.8
Cassette mechanism section
F
F
Fig.9
CP701
F
F
Top chassis
1-5
KS-FX611
Removing the control switch board
(See Fig.10 to 12)
Prior to performing the following procedure, remove
the front panel assembly.
1.
Remove the four screws G attaching the rear cover
on the back of the front panel assembly.
2.
Unjoint the eleven joints c with the front panel and
the rear cover.
3.
Remove the control switch board on the back of the
front panel.
G
Front panel
G
Rear cover
Joints c
G
G
Fig.10
Joints c
Joints c
Rear cover
Front panel
Joints c
Fig.11
Control switch board
Fig.12
1-6
<Removal of the cassette mechanism>
KS-FX611
Cassette mechanism ass’y
Removing the head amplifier board.
(See Fig.1 and 2)
1.
For the 6pin wire extending from connector CN402
on the head amplifier board, disconnect it from the
head relay board.
2.
Disconnect the card wire from connector CN403 on
the head amplifier board.
3.
Remove the screw A attaching the head amplifier
board.
4.
Move the tab a as shown in Fig.2 and remove the
head amplifier board while moving it in the direction
of the arrow.
Removing the cassette mechanism
assembly (See Fig.1 to 3)
1.
Disconnect the 6pin wire from connector CN402 and
the card wire from CN403 on the head amplifier
board (Refer to Fig.1 and 2).
Head relay
board
6pin
wire
CN402
A
CN403
CN402
Fig.1
CN403
Head amplifier board
Fig.2
Head amplifier board
Tab a
2.
Remove the four screws B on the bottom of the
cassette mechanism.
Head amplifier board
B
Cassette mechanism ass’y
B
Fig.3
1-7
KS-FX611
Removing the head relay board
(See Fig.4)
1.
Unsolder the soldering b on the head relay board.
2.
Remove the screw C attaching the head relay board.
3.
Remove the head relay board in the direction of the
arrow while releasing the two joints c.
Removing the load arm (See Fig.5)
1.
Remove the E washer attaching the load arm using
a pincette or something like that and remove the
spring d.
2.
Move the part of the load arm marked upwards to
release it from the axis of rotation. Then rotate the
load arm in the direction of the arrow to remove it
from the cach.
Fig.4
Cach
Load arm
Fig.5
Head relay board
Soldering b
C
E washer
Joint c
Spring d
Removing the sub chassis (See Fig.6)
Prior to performing the following procedure, remove
the head relay board.
1.
Remove the screw D attaching the sub chassis.
2.
Push the tab e in the direction of the arrow to detach
the one side of the sub chassis. Then release the
sub chassis from the tab f.
Removing the cassette holder and the
holder arm in the eject mode
(See Fig.7 and 8)
Prior to performing the following procedure, remove
the head relay board, the load arm and the sub
chassis.
1.
Remove the screw E attaching the reinforce bracket.
2.
Remove the reinforce bracket.
Tab f
Sub chassis
Head relay
board
D
Cassette mecha chassis
Cassette holder
Fig.6
Head relay board
Tab e
Reinforce bracket
E
Reinforce
bracket
tab g
3.
Push the tab g fixing the cassette holder in the
direction of the arrow and open the cassette holder
and the holder arm upward until they stop at an
angle of 45 degrees. Move the two joints h to the
side and remove the cassette holder and the holder
arm from the shaft.
1-8
Joint h
Load arm
Holder arm
Fig.7
Joint h
Removing the play head (See Fig.9)
Prior to performing the following procedure, remove
the head relay board and the sub chassis.
1.
Remove the two screws F attaching the play head
(The spring under the play head comes off at the
same time).
Shaft
Joint h
Pinch roller ass’y
Fig.8
Play head
KS-FX611
Cassette holder
and holder arm
Joint h
Shaft
Pinch roller ass’y
Removing the pinch roller ass’y
(See Fig.9)
Prior to performing the following procedure, remove
the head relay board and the sub chassis.
1.
Push each tab i in the direction of the arrow and pull
out the pinch rollers on both sides.
Removing the reel disc board
(See Fig.10)
1.
Unsolder the soldering j on the reel disc board.
2.
Push the seven tabs k on the bottom of the cassette
mechanism assembly in the direction of the arrow.
Removing the motor and the sub motor
(See Fig.10 and 11)
Tab i
Tab i
Soldering j
G
Motor
F
Pinch roller ass’y
Fig.9
Reel disc board
Tabs k
Tabs k
G
Tab i
Spring
Tab i
Cassette mechanism ass’y
Flyhwheel
Belt
Fig.10
1.
Unsolder the two soldering l of the motor and the sub
motor.
2.
Release the sub motor from the three tabs m. Push
the sub motor upward and pull out it.
3.
Remove the belt on the bottom of the cassette
mechanism assembly and remove the two screws G
attaching the motor.
ATTENTION:
The motors can be detached before
removing the load arm.
Sub motor
Tab m
Load arm
Soldering j
Tab m
Soldering l
Tab m
Soldering l
Motor
Fig.11
1-9
KS-FX611
Removing the flywheel
(See Fig.10 and 12)
1.
Prior to performing the following procedure, remove
the head relay board, the load arm, the sub chassis,
the cassette holder, the holder arm and the reel disc
board.
2.
Remove the belt on the bottom of the cassette
mechanism ass’y.
3.
Remove the slit washer attaching the flywheel on the
upper side of the cassette mechanism ass’y and pull
out the flywheel downward. Then remove another
flywheel in the same way.
ATTENTION:
When reassembling, make sure to use
a new slit washer.
Removing the reel disc ass’y( )
(See Fig.12 to 14)
Soldering j
G
Motor
Plate
Reel disc board
G
Slit washer
Tab k
Tab o
Cassette mechanism ass’y
Tab k
Belt
Fig.10
Reel driver
The part n
Tabs o
Flyhwheel
Reel disc
ass’y( )
Push aside
the gear
Prior to performing the following procedure, remove
the head relay board, the load arm, the sub chassis,
the cassette holder and the holder arm.
1.
Disengage the part n inside of the reel driver which
engages with the shaft, using a pincette or
something like that. Then remove the reel driver from
the shaft.
2.
Remove the reel driver spring and the reel table.
The part n
Slit washer
Shaft
Fig.13
The part n
Reel driver
Fig.12
Reel driver
Reel driver spring
Reel disc ass’y( )
1-10
Reel table
Fig.14
KS-FX611
Removing the reel disc ass’y( )
(See Fig.12 to 15)
ATTENTION:
1.
Release the plate from the three tabs o.
2.
Push aside the gear over the reel table using a
pincette or something like that.
3.
Remove the reel disc ass’y ( ) as with the reel disc
ass’y ( ).
ATTENTION:
Prior to performing the following
procedure, remove the reel disc ( ).
Do not break the front panel tab fitted
to the metal cover.
Push aside the gear and reattach the reel disc Ass’y( ).
Reel disc ass’y( )
Fig.15
1-11
KS-FX611
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
VT739
VT712
VT703
6.Torque gauge
For playback frequency measurement
For wow flutter & tape speed measurement
for DOLBY level measurement
For head azimuth measurement
Cassette type for CTG-N
(mechanism adjustment)
Measuring conditions(Amplifier section)
Power supply voltage
Load impedance
Line out
DC14.4V(10.5~16V)
4 (2Speakers connection)
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 applied in this
working standard.
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 receiving.
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).
Arrangement of Adjusting
Cassette Mechanism Section
Capstan motor
Cassette mechanism
(Surface)
Azimuth screw
(Forward side)
Playback head
Tape speed adjust
1-12
Azimuth screw
(Reverse side)
Arrangment of adjusting
Head amplifier board section (Reverse side)
VR402:Rch
(Dolby NR level adj)
KS-FX611
VR401:Rch
(Dolby NR Frequency response adj)
B402
E
Q401
D401
B401
CP401
1
R420
1
R423
R421
R422
Q402
B409
Q403
D402
B408
FSMW1101A
VR402
C417
D403
C418
R424
IC402
R425
C419
C414
B403
B410
B404
C410
C412
C411
R413
1
C415
R416
R415
C416
R418
R419
CP403
C409
R411
B415
C413
1
11
B411
IC401
B412
17
VR401
B416
R412
R410
C405
R408
31
B406
C407
21
R417
B413
B414
R409
C408
C406
R414
R407
1
B405
TPP
C404
CP402
1
R402
C401
2
R404
R405
C403
R401
R406
R403
C402
B407
Information for using a car audio service jig
1. 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 : EXTKSRT002-18P ( 18 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 CP701 connector when installing the front panel.
Cassette mechanism
to Cassette mechanism
EXTKSRT002-18P
Extension cord
EXTKSRT002-18P
to Main board
1-13
KS-FX611
Item
Head
1.
azimuth
adjustment
Conditions
Test tape:
SCC-1659
VT703(10kHz)
Adjustment and Confirmation methods
Head height adjustment
Adjust the azimuth directly. When you
adjust the height using a mirror tape,
remove the cassette housing from the
mechanism chassis. After installing the
cassette housing, perform the azimuth
adjustment.
Load the SCC-1659 mirror tape. Adjust with
1.
height adjustment screw 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.
After switching from REV to FWD then to
2.
REV, check that the head position set in
procedure 1 is not changed. (If the position
has shifted, adjust again and check.)
Adjust with azimuth adjustment screw B so
3.
that line B of the mirror tape runs in the
center between Lch and Rch in the forward
play mode.
Head azimuth adjustment
Load VTT724 (VT724) (1kHz) and play it
1.
back in the reverse play mode. Set the Rch
output level to max.
Load VTT703 (VT703) (10kHz) and play it
2.
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 be within 45 .
Engage the reverse mode and adjust the
3.
output level to max, with azimuth
adjustment screw C.
(The phase difference should be 45 or
more.)
When switching between forward and
4.
reverse modes, the difference between
channels should be within 3dB. (Between
FWD L and R, REV L and R.)
S.ValuesAdjust
A line
Head shield
The head is at low position
during.
B line
Head shield
The head is at High position
during REV.
Output
level:
Maximum
PBHead
FWD Adj B
REV Adj C
(0 )(45 )
HEIGHT Adj A
phase
2.
3.
1-14
Tape speed
and wow
flutter
confirmation
Play back
frequency
response
confiramation
When VTT721 (VT721) (315Hz) is played
5.
back, the level difference between channels
should be within 1.5dB.
Test tape: VTT712
(3kHz)
Test tape: VTT724
(1kHz)
VTT739
(63Hz / 1kHz / 10kHz)
The tuner section is of an adjustment-freedesign. In case the tuner is in trouble, replace the tuner pack.
Check to see if the reading of the F, counter /
1.
wow flutter meter is within 3015 3045(FWD
/ REV), and less than 0.35% (JIS RMS).
In case of out of specification, adjust the
2.
motor with a built-in volume resistor.
Play test tape VTT724, and set the volume
1.
position at 2V.
Play test tape VTT739 and confirm.
2.
1kHz / 10kHz: -1 3dB,
1kHz / 63Hz: 0 3dB,
When 10kHz is out of specification, it will be
3.
necessary to read adjust the azimuth.
Tape speed:
3015
3045Hz
Wow
flutter: less
than 0.35%
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
Segment output pins used to display data transferred
Function
by serial data input.
O
Common driver output pins. The frame frequency is given
by : t0=(fosc/384)Hz.
--
Power supply connection. Provide a voltage of between
4.5 and 6.0V.
I
Display turning off input pin.
INT="L" (Vss) ----- off (S1 to S52, COM1 to COM3="L"
INT="H" (VDD)----- on
Serial data can be transferred in display off mode.
I
Used for applying the LCD drive 2/3 bias voltage
externally.
Must be connected to VDD2 when a 1/2 bias drive scheme
is used.
I
Used for applying the LCD drive 1/3 bias voltage
externally.
Must be connected to VDD1 when a 1/2 bias drive scheme
is used.
--
Power supply connection. Connect to GND.
I/O
Oscillator connection.
An oscillator circuit is formed by connecting an external
resistor and capacitor at this pin.
Serial data CE : Chip enable
interface connection
I
to the controller. CL : Sync clock
1-22
64
DI
DI : Transfer data
TEA6320T-X (IC161) : E.volume
1.Pin layout
2.Block diagram
10897 6
KS-FX611
5
12
SDA
1
GND
2
OUTLR
OUTLF
MUTE
TL
B2L
B1L
IVL
ILL
QSL
IDL
ICL
IMD
IBL
IAL
3
4
5
6
7
8
9
10
11
12
13
14
15
16
3.Pin functions
Pin
Symbol
No.
SDA
1
SCL
32
VCC
31
OUTRR
30
OUTRF
29
TR
28
B2R
27
B1R
26
IVR
25
ILR
24
QSR
23
IDR
22
Vref
21
ICR
CD-CH
TAPE
TUNER
20
19
18
17
CAP
IBR
IAR
I/O
Serial data input/output.
I/O
MUTE
21
31
2
19
16
15
13
11
14
22
20
18
17
FunctionsFunctions
POWER
SUPPLY
SOURCE
SELECTOR
23252426 2728
VOLUME 1
+20 to -31 dB
LOUDNESS
LEFT
VOLUME 1
+20 to -31 dB
LOUDNESS
RIGHT
Pin
No.
17
Symbol
IAR
BASS
LEFT
+15 dB
LOGIC
BASS
RIGHT
+15 dB
I/O
I
Input A right source.
TREBLE
LEFT
+12 dB
TREBLE
RIGHT
+12 dB
FUNCTION
ZERO CROSS
DETECTOR
VOLUME 2
0 to 55 dB
BALANCE
FENDER REAR
VOLUME 2
0 to 55 dB
BALANCE
FENDER FRONT
HC BUS
REC
VOLUME 2
0 to -55dB
BALANCE
FENDER FRONT
VOLUME 2
0 to -55dB
BALANCE
FENDER REAR
3
4
32
1
29
30
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
GND
OUTLR
OUTLF
TL
B2L
B1L
IVL
ILL
QSL
IDL
MUTE
ICL
IMO
IBL
IAL
Ground.
-
output left rear.
O
output left front.
O
Treble control capacitor left channel or
I
input from an external equalizer.
Bass control capacitor left channel or
-
output to an external equalizer.
Bass control capacitor left channel.
-
Input volume 1. left control part.
I
Input loudness. left control part.
I
Output source selector. left channel.
O
Not used
-
Not used
-
Input C left source.
I
Not used
-
Input B left source.
I
Input A left source.
I
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
IBR
CAP
ICR
Vref
IDR
QSR
ILR
IVR
B1R
B2R
TR
OUTRF
OUTRR
Vcc
SCL
I
Input B right source.
-
Electronic filtering for supply.
I
Input C right source.
-
Reference voltage (0.5Vcc)
-
Not used
O
Output source selector right channel.
I
Input loudness right channel.
I
Input volume 1. right control part.
-
Bass control capacitor right channel
Bass control capacitor right channel or
O
output to an external equalizer.
Treble control capacitor right channel or
I
input from an external equalizer.
O
Output right front.
O
Output right rear.
-
Supply voltage.
I
Serial clock input.
1-23
KS-FX611
VICTOR COMPANY OF JAPAN, LIMITED
MOBILE ELECTRONICS DIVISION
PERSONAL & MOBILE NETWORK BUSINESS UNIT. 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan
(No.49677)
200202
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