SERVICE MANUAL
CASSETTE RECEIVER
KS-FX7
KS-FX7
Contents
LOUD
DISP
SCAN
CD CHANGER CONTROL
Multi
Music
Scan
MO789101112
Area Suffix
UN -------- Asean
Safety precaution
Disassembly method
Adjustment method
Description of major ICs
COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD.
1-2
1-3
1-12
1-16
No.49647
Aug. 2001
KS-FX7
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-FX7
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-FX7
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
Heat sink
Fig.4
Rear panel
A
Bottom cover
Joints b
Bottom cover
Joints b
Fig.5
Joints b
Joint b
Rear panel
Fig.6
1-4
KS-FX7
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.
(KS-FX601U / KS-FX701U)
1.
Remove the screw B, the four screws C and the two
screws D attaching the rear bracket on the back of
the body. Remove the rear panel. (KS-FX501U)
2.
Remove the two screws E attaching the main board
on the bottom of the body. Disconnect connector
CN701 on the main board in the direction of the
arrow.
D
E
C
Rear panel
Fig.7
Main board
C
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
CN701
F
F
Top chassis
1-5
KS-FX7
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 twelve joints c with the front panel and
the rear cover.
3.
Remove the control switch board on the back of the
front panel.
Front panel
G
G
Joint c
Rear cover
Joints c
Fig.10
Joints c
G
G
Joint c
Joint c
Joint c
Rear cover
Joints c
Fig.11
Front panel
Control switch board
Fig.12
1-6
<Removal of the cassette mechanism>
KS-FX7
Cassette mechanism ass’y
Removing the head amplifier P.W.B.
(See Fig.1 and 2)
1.
For the 6pin harness extending from connector
CN402 on the head amplifier P.W.B, disconnect it
from the head relay P.W.B.
2.
Disconnect the card wire from connector CN403 on
the head amplifier P.W.B.
3.
Remove the screw A attaching the head amplifier
P.W.B.
4.
Move the tab a as shown in Fig.2 and remove the
head amplifier P.W.B. while moving it in the direction
of the arrow.
Removing the cassette mechanism
assembly (See Fig.1 to 3)
1.
Disconnect the 6pin harness from connector CN402
and the card wire from CN403 on the head amplifier
P.W.B. (Refer to Fig.1 and 2).
Head relay
P.W.B.
6pin
harness
CN403
CN402
CN402
CN403
Head amplifier P.W.B.
A
Head amplifier P.W.B.
Fig.1
Tab a
Fig.2
2.
Remove the four screws B on the bottom of the
cassette mechanism.
B
Head amplifier P.W.B.
Cassette mechanism ass’y
B
Fig.3
1-7
KS-FX7
Removing the head relay P.W.B.
(See Fig.4)
1.
Unsolder the soldering b on the head relay P.W.B.
2.
Remove the screw C attaching the head relay P.W.B.
3.
Remove the head relay P.W.B. 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 P.W.B.
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 P.W.B.
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 P.W.B., 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
P.W.B.
D
Cassette mecha chassis
Cassette holder
Fig.6
Head relay P.W.B.
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 P.W.B.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-FX7
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 P.W.B.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 P.W.B.
(See Fig.10)
1.
Unsolder the soldering j on the reel disc P.W.B.
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 P.W.B.
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-FX7
Removing the flywheel
(See Fig.10 and 12)
1.
Prior to performing the following procedure, remove
the head relay P.W.B, the load arm, the sub chassis,
the cassette holder, the holder arm and the reel disc
P.W.B.
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 P.W.B.
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 P.W.B, 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-FX7
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-FX7
Adjustment method
Test instruments reqired for adjustment
1. Digital osclloscope(100MHz)
2. Frequency Counter meter
3. Electric voltmeter
4. Wow & flutter meter
5. T est T apes
MC-109C
VT724.......................
VT739............For playback frequency measurement
VT712....For wow flutter & tape speed measurement
VT703..................... For head azimuth measurement
6. T orque gauge .................... Cassette type for CTG-N
...................
for TAPA CURL confirmation
(without Padd type)
for DOLBY level measurement
(mechanism adjustment)
Frequency Range
FM: 87.5 MHz to 108.0 MHz
AM: 531 kHz to 1602 kHz
Measuring conditions(Amplifier section)
Power supply voltage.............. DC14.4V (11V - 16V allowance)
Load impedance ........... 4 (4 to 8 allowance)
Line out level/Impedance............ 2.0V/20k load
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.
1-12
Arrangement of adjusting & test points
Cassette mechanism
(Surface)
Motor assembly
KS-FX7
Tape speed adjust
Head section view
Azimuth screw A
(Forward)
Playback head
Azimuth screw B
(Reverse)
Azimuth screw B
(Reverse)
Azimuth screw A
(Forward)
Playback Head
1-13
KS-FX7
Main board
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.
Extension cord
EXTKSRT002-18P
Cassette mechanism
to Cassette mechanism
EXTKSRT002-18P
Main board
Front panel assembly
to Main board
1-14
Mechanism adjustment section
Item Adjusting & Confirmation Methods Adjust Std. Value
1. Tape running
adjustment
2. Azimuth
adjustment
confirmation
a) At Forward playmode, using mirror tape, make adjustment
with Azimuth screw A and Azimuth screw B, without curl of 4
parts of head tape guide.
b) At Reverse play mode, using mirror tape, make adjustment
with Azimuth screw A and Azimuth screw B, without tape
curl of 4 parts of head guide.
c) At Forward / Reverse play mode, make confirmation of no
tape curl of 4 parts of head tape guide.
a) At forward play mode, make adjustment of peak of Lch / Rch
output with Azimuth screw A.
* For Oscilloscope litharge corrugation, set 45 as standard.
b) At Reverse play mode, make adjustment of peak of Lch / Rch
output with Azimuth screw B.
* For Oscilloscope litharge corrugation, set 45 as standard.
c) With AC volt meter confirm the difference of output for 4ch
between Lch / Rch at forward play mode and Lch / Rch
Reverse play mode being within 3.0dB.
d) After operation, make confirmation of Lch / Rch azimuth
output being within 1.0dB from adjustment value.
KS-FX7
Azimuth
screw A
Azimuth
screw B
2.T ape Speed and
Wow & Flutter
HEAD
Tape guide
OK
HEAD TAPE
1.Check to see if the reading of the frequency counter & W ow
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 builtin volume resistor .
Tape curl NG
0
Phase
Built-in
volume resistor
45
T ape Speed
2940-3090Hz
Wow&Flutter
Less than
0.35%
(JIS RMS)
3.Playback
Frequency
response
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/
10kHz and -4+2dB at 1kHz/63Hz.
3.When 10kHz is out of specification, it will be necessary to
read adjust the azimuth.
Speaker out
1kHz/10kHz
: 0dB 3dB,
63Hz/1kHz
: -4dB+2dB,
1-15
KS-FX7
Description of major ICs
TEA6320T-X (IC161) : E.volume
1.Pin layout
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
CD-CH
TAPE
TUNER
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
SCL
VCC
OUTRR
OUTRF
TR
B2R
B1R
IVR
ILR
QSR
IDR
Vref
ICR
CAP
IBR
IAR
2.Block diagram
10 8 9 7 6
21
31
2
19
16
15
13
11
14
22
20
18
17
POWER
SUPPLY
SOURCE
SELECTOR
23 25 24 26 27 28
VOLUME 1
+20 to -31 dB
LOUDNESS
LEFT
VOLUME 1
+20 to -31 dB
LOUDNESS
RIGHT
BASS
LEFT
+15 dB
LOGIC
BASS
RIGHT
+15 dB
5
TREBLE
LEFT
+12 dB
TREBLE
RIGHT
+12 dB
12
MUTE
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
Pin
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Symbol
SDA
GND
OUTLR
OUTLF
TL
B2L
B1L
IVL
ILL
QSL
IDL
MUTE
ICL
IMO
I/O
Serial data input/output.
I/O
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
-
Functions Functions
Pin
No.
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Symbol
IAR
IBR
CAP
ICR
Vref
IDR
QSR
ILR
IVR
B1R
B2R
TR
OUTRF
OUTRR
I/O
I
Input A right source.
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.
1-16
15
16
IBL
IAL
Input B left source.
I
Input A left source.
I
31
32
Vcc
SCL
-
Supply voltage.
I
Serial clock input.
AN80T05LF (IC901) : Regulator
1.Terminal layout & Block diagram
Reference V oltage
Thermal
Protection
Current Protection
KS-FX7
ASO & Peak
Pre
Drive
1 2 3 4 5 6 7 8 9 10 11 12
ILL
10V
2.Pin function
Pin
No.
1
2
3
4
5
6
7
8
9
10
11
12
Pre
Drive
MODE2 MODE1 STB VDD
5.6V
AMP
Out
AMP VCC ANT COM
Symbol Function
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
AMP
Out
Pre
Drive
Pre
Drive
8.7VAM8.7VFM8.7V
Pre
Drive
GND
1-17
KS-FX7
CXA2559Q(IC401):Head amp.
1.Pin layout
40 31
1
30
10
11 20
2.Blockdiagram
PBFB2
PBRIN2
PNGND
PNFIN2
VCT
PBREF
PBFIN1
PBGND
PBRIN1
PBFB1
21
31
32
33
34
35
36
37
38
39
40
45k
PBTC2
30
7k/12k
300k
F2
30k
30k
F1
300k
7k/12k
PBOUT2
OUTREF2
29
28
+
+
-
TAPEIN2
27
100k
70 /12070 /120
T2
X1
X1
T1
100k
GND
26
TAPE EQ
FWD/RVS
LPF
DIREF
25
+
BIAS
MUTE
Vcc
+
-
F3
+
LINEOUT2NCNC
24
23
22
24dB
-
MS MODE
DET
-
24dB
MSSW
21
MS ON/
OFF
20
19
18
17
16
15
14
13
12
11
MSMODE
DRSW
TAPESW
MUTESW
NC
NC
MSOUT
MSTC
G1FB
G2FB
1-18
1
2
PBTC1
PBOUT1
3
4
TAPEIN1
OUTREF1
5
NC
6
NC
7
8
NC
LINEOUT1
9
NC
10
MSLPF
KS-FX7
3.Pin function
Pin No.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
1
2
3
4
5
6
7
8
9
Symbol
PBTC1
PBOUT1
OUTREF1
TAPEIN1
Vcc
NC
LINEOUT1
NC
NC
MSLPF
G2FB
GI1FB
MSTC
MSOUT
NC
NC
MUTESW
TAPESW
DRSW
MSMODE
MSSW
NC
NC
LINEOUT2
DIREF
GND
TAPEIN2
OUTREF2
PBOUT2
PBTC2
PBFB2
PNRIN2
PBGND
PBFIN2
VCT
PBREF
PBFIN1
PBGND
PBRIN1
PBFB1
I/O
Function
-
Terminal of capacity of reproduction equalizer reproduction
O
Equalizer output terminal
O
Output standard terminal
I
Tape input terminal
-
Power supply terminal
-
Non connection
O
Line-out output terminal
-
Non connection
-
Non connection
-
Detection LPF terminal between tunes
-
Detection level set terminal between tunes
-
Detection level set terminal between tunes
-
Time constant connection terminal for the detection between tunes
O
Detection output terminal between tunes
-
Non connection
-
Non connection
I
Mute function control terminal
I
Reproduction equalizer control terminal
I
Head change control terminal
I
Detection mode control terminal between tunes
Detection function control terminal between tunes
I
Non connection
Non connection
Line-out output terminal
O
Resistance connection terminal for standard current setting
Earth terminal
Tape input terminal
I
Output standard terminal
O
Reproduction equalizer output terminal
O
Terminal of capacity of reproduction equalizer
Reproduction equalizer return terminal
I
Reproduction equalizer input terminal
I
Reproduction equalizer system earth terminal
Reproduction equalizer input terminal
I
Middle point terminal
O
Reproduction equalizer standard terminal
O
Reproduction equalizer input terminal
I
Reproduction equalizer system earth terminal
Reproduction equalizer input terminal
I
Reproduction equalizer return terminal
I
CXA2559Q 2/2
1-19
KS-FX7
LC72366-9985 (IC701) : SYSTEM CPU
1. Pin layout
25
~
40
2. Pin function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
J-BUS SCK
DIMMER IN
TUNER ILLUM
TAPE ILLUM
FF/REW MODE
SEEK/STOP
RADIO/TAPE
BEEP LEVEL
24 ~ 1
41 ~ 64
Symbol FunctionPin No.
XIN
GND
J-BUS SI
J-BUS SO
J-BUS I/O
NC
LCD SO
LCD SCK
LCD CE
EVOL SO
EVOL SCK
NC
CD ILLUM
DEMERIT
NC
OPEN
NC
NC
NC
NC
KS1
KS0
K3
K2
K1
K0
Vdd
TEST
MONO
PWR-CNT
ACC
KICK
80
65
~
I/O
I
Crystal oscillator input port
-
Connect to GND
I
Data input for J-BUS information
O
Data output for J-BUS information
O
Clock output for J-BUS information
O
Switching signal output for J-BUS information I/O, H:Out L:In
-
None connection
O
Data output for LCD driver
O
Information clock output for LCD driver data
O
Chip enable output for LCD driver
-
None connection
O
Data output for electrical volume
O
Clock output for electrical volume information
-
Non connection
-
Non connection
-
Non connection
-
Non connection
-
Non connection
-
Non connection
-
Non connection
-
Non connection
-
Non connection
-
Non connection
-
Non connection
-
Non connection
O
Diode matrix output port for initial establishing
I
Diode matrix output port for initial establishing
I
Diode matrix output port for initial establishing
-
Non connection
I
Diode matrix output port for initial establishing
-
5V power supply port (+B)
I
Turn on all light indicator of LCD, L: All light a LED indicator
O
FF/REW mode select signal output
O
H:Auto seek, L: Stop Use both as IF count REQ and Seek/Stop
O
Forced monaural output port, H:Turn on Forced monaural
-
Non connection
-
Non connection
O
"H" : Turn on power
-
Non connection
-
Non connection
1-20
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
REMOCON
57
58
59
60
61
62
LEVELMETER
63
64
65
66
67
68
69
AM IF COUNT
70
FM IF COUNT
71
72
73
74
75
76
77
78
79
80
MOTOR
SUBMO+
SUBMO-
BEEP
TAPE IN
STANDBY
REEL
MODE
F/R
MS
SD/ST
DETACH
ENC1
ENC2
J-BUS INT
FM/AM
DOLBY
NC
MUTE
MEM DET
S.METER
KEY2
KEY1
KEY0
ACCDET
SENSE
NC
NC
Vdd
AM OSC
FM OSC
VSS
NC
E0
TEST1
XOUT
I/OPort Name FunctionPin No.
Main motor output, H:Transport L: Stop
O
Sub-motor output(+), Loading direction to transport output
O
Sub-motor output(-), Eject direction to transport output
O
Non connection
Switch for detecting to input cassette, L: Cassette in
I
Switch for detecting standby position
I
Switch for detecting tape end position
I
Detecting mode position input
I
Switch for detecting forward/reverse , H:FWD L:REV
I
MS input port,
I
Station detector, Stereo signal input, H:SD
I
Front panel detect
O
Connect to encoder 1
I
Connect to encoder 2
I
Cut in signal detecting port from J-Bus information
I
Non connection
FM/AM mode switching signal port, H:FM L:AM
O
Non connection
Non connection
Mute output port, L:Mute
O
Back-up power supply detecting port, H:input L:no input
I
Pressure voice level voltage input for level meter.
I
S meter voltage input
I
Key 2 input port
I
Key 1 input port
I
Key 0 input port
I
Hold port for Acc detecting, L: Hold mode
I
Voltage sensor port
I
Non connection
FM frequency detecting
I
Non connection
Non connection
5V power supply (+B)
Non connection
I
FM limited signal input
I
Ground port for power supply
Non connection
Error signal output port for PLL
O
Test port for LSI, To connect ground
-
4.5MHz crystal oscillator output
O
KS-FX7
LC72366-9985(2/2)
1-21
KS-FX7
HA13158A (IC301) : Power amp
1. Pin layout
1 ~ 23
2. Block diagram
INVCC
IN1
2
STBY
1
14 18 6
PVCC1PVCC2
INPUTBUFFER1
AMP1
+
3
4
-
5
IN2
IN3
IN4
11
13
23
10
MUTE
INPUTBUFFER2
INPUTBUFFER3
INPUTBUFFER4
PROTECTOR (ASO
SURGE, TSD)
12 22
AMP2
AMP3
AMP4
TAB
7
+
8
-
9
15
+
16
-
17
19
+
20
-
21
1-22
LC75823W (IC651) : LCD driver
1. Pin Layout & Symbol
KS-FX7
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
S13
S14
S15
S16
DICLCE
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
S17
S18
S19
OSC
S20
Vss
S21
VDD2
VDD1
S22
S23
INH
S24
VDD
S25
COM3
COM2
S26
S27
COM1
S52
S28
S29
S51
S30
S50
S31
S49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
S32
S48
S47
S46
S45
S44
S43
S42
S41
S40
S39
S38
S37
S36
S35
S34
S33
2. Pin Function
Pin No.
1 to 52
53 to 55
S1 to S52
COM1 to COM3
56
57
58
59
60
61
62
63
Symbol
VDD
INH
VDDD1
VDD2
Vss
OSC
CE
CL
I/O
O
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
64
DI
DI : Transfer data
1-23
KS-FX7
KIA7810PI (IC902) : Regulator
1.Pin layout 2.Block diagram
1 INPUT
1 2 3
R4 R18
Q12
R5
Z1
R6
R7
R1
Q1
Q13
R10 R3
Q8
Q10
Q5
Q7
R8
R2
Q6
Q2
R15
Q14
C1
R14
Q4
Q9
R16
R9
Q15
Q3
Q11
R13
R21
R17
Q16
R12
Q17
R11
3 OUTPUT
R20
R19
2 GND
LB1641 (IC402) : DC motor driver
1. Pin layout
2. Pin function
1-24
1 2 3 4 5 6 7 8 9
GNDOUT1 P1
Input Output
IN1 IN2 OUT1 OUT2
VZ IN1 IN2
VCC1
VCC2 P2
0 0 0 0
1 0 1 0
0 1 0 1
1 1 0 0
10
OUT2
Mode
Brake
CLOCKWISE
COUNTER-CLOCKWISE
Brake
RPM6938-SV4(IC652) : Remote Censor
1.Block diagram
KS-FX7
AMP
I/V
conversion
PD
magnetic shield
BPF
fo
trimming
circuit
HD74HC126P (IC801) : Bus buffer
AGC
Detector
Vcc
Comp
Vcc
22k
Rout
GND
OE1
A1
Y1
OE2
A2
Y2
Vss
1
2
3
4
5
6
7
HD74HC126
14
13
12
11
10
9
8
Vcc
OE4
A4
Y4
OE3
A3
Y3
1-25
KS-FX7
VICTOR COMPANY OF JAPAN, LIMITED
MOBILE ELECTRONICS DIVISION
PERSONAL & MOBILE NETWORK BUSINESS UNIT. 10-1,1Chome,Ohwatari-machi,Maebashi-city,Japan
(No.49647)
Printed in Japan
200108(V)
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