KS-FX915R/KS-FX815
SERVICE MANUAL
CASSETTE RECEIVER
KS-FX915R/KS-FX815
KS-FX915R
KS-FX815
Difference point
KS-FX915R
KS-FX815
DISPDISP
TP TP
RDSRDS
PTYPTY
LOUDLOUD
DISPDISP
SCANSCAN
8 9 10 11 127
8 9 10 11 127
RDS
O
X
Dimmer
O
X
KS-FX915R
KS-FX815
Beep
O
X
DAB
MO
MO
Area Suffix
Russian Federation
O
X
LCD
Color
Nega
EE
Remocon
Contents
Safety precaution 1- 2
Location of main parts 1- 3
Disassembly method 1- 4
Adjustment method
Description of major ICs 1-14
COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD.
1-11
No.49613
Feb. 2001
KS-FX915R/KS-FX815
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
Location of main parts
Control unit
Display
Main unit
Main board
Changer control
I/O connector
Control unit
connector
KS-FX915R/KS-FX815
RCA jack
Antenna
jack
Cassette mechanism
Cassette mechanism
C.motor assembly
Mechanism control board assembly
Power IC
Head relay board
Main board assembly
Main board assembly
Connector to controller
Connector to controller
Mechanism control board assembly
Capstan motor assembly
Tuner
pack
Cassette housing
Head
Flywheel assembly
Reel board
1-3
KS-FX915R/KS-FX815
Disassembly method
Removing the front chassis (See Fig.1)
1. Remove two screws A and insert a screwdriver to the
joints a on the side of the front chassis and two joints b
on the right side, then detach the front chassis toward the
front side.
Removing the heat sink (See
1. Remove the three screws B attaching the heat sink on
the left side of the body, and remove the heat sink.
Fig.2 )
A
B
A
a
a
Front chassis
Fig.1
b
b
B
Removing the bottom cover (See
1.2.Turn the body upside down.
Insert a screwdriver to the two joints c and two joints d on
both sides of the body and the joint e on the back of the
body, then detach the bottom cover from the body.
Fig.3 )
Heat sink
B
Fig.2
c
Regulator board
e
d
Fig. 3
1-4
Removing the main amplifier board assembly
(See Fig.4 and 5)
1.
Remove the front chassis.
2.
Remove the bottom cover.
3.
Remove the two screws C attaching the main amplifier
board assembly on the bottom of the body.
KS-FX915R/KS-FX815
CP401
Main amplifier board
4.
Remove the three screws D attaching the main amplifier
board assembly on the back of the body.
5.
Disconnect connector CP401 on the main amplifier board
assembly from the cassette mechanism assembly.
Removing the Cassette mechanism assembly
(See
Fig.6 )
Remove the front chassis.
1.
Remove the bottom cover.
2.
Remove the main amplifier board assembly.
3.
Remove the four screws E attaching the Cassette
4.
mechanism assembly from the top cover.
D
C
C
Fig.4
D
Fig. 5
E
Removing the control switch board
Fig.7 and 8 )
(See
1.
Remove the front chassis.
2.
Remove the four screws F attaching the rear cover on the
back of the front panel unit.
Remove the control switch board from the front panel
3.
unit.
Fig. 6
F
F
Fig. 7
Control switch board
Fig. 8
E
F
F
1-5
KS-FX915R/KS-FX815
<Removal of the cassette mechanism>
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
1-6
KS-FX915R/KS-FX815
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.
Joint h
Load arm
Holder arm
Fig.7
Joint h
1-7
KS-FX915R/KS-FX815
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
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.
1-8
Sub motor
Tab m
Load arm
Soldering j
Tab m
Soldering l
Tab m
Soldering l
Motor
Fig.11
KS-FX915R/KS-FX815
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 spring
Reel disc ass’y( )
Reel driver
Reel table
Fig.14
1-9
KS-FX915R/KS-FX815
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
1-10
Adjustment method
KS-FX915R/KS-FX815
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
Power supply voltage
Load impedance
Line out
For playback frequency measurement
For wow flutter & tape speed measurement
Measuring conditions(Amplifier section)
for DOLBY level measurement
For head azimuth measurement
Cassette type for CTG-N
(mechanism adjustment)
DC14.4V(10.5~16V)
4 (2Speakers connection)
20k
Tuner section
BAND STEP
FM : 100kHz (Seek), 50kHz (Manual)
AM : 9kHz step
Preset Memory Initialization
Band
FM(MHz)
AM(kHz)
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.
M1
87.5
153
Preset Memory
M2
M3
89.9
97.9
216
603
M4
105.9
999
M5
108.0
1404
M6
87.5
1620
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
Azimuth screw
(Reverse side)
1-11
KS-FX915R/KS-FX815
Main board
Arrangment of adjusting
Head amplifier board section (Reverse side)
VR402:Rch
(Dolby NR level adj)
VR401:Rch
(Dolby NR Frequency response adj)
B402
E
Q401
D401
B401
CP401
1
R420
B408
1
R423
R421
R422
Q402
B409
Q403
D402
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
C407
21
C408
R417
R414
B413
R404
B406
B414
R409
C406
R407
1
B405
TPP
C404
CP402
1
R402
C401
2
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..
Cassette mechanism
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
to Cassette mechanism
EXTKSRT002-18P
1-12
Main board
Front panel assembly
to Main board
KS-FX915R/KS-FX815
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.Values Adjust
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
Tape speed
2.
and wow
flutter
confirmation
Play back
3.
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%
Speaker out
1kHz / 63Hz
: 0 3db
1kHz / 10kHz
: -1 3db
Built-in volume
resistor
1-13
KS-FX915R/KS-FX815
Descrption of major ICs
TEA6320T-X (IC161) : E.volume
1.Pin layout
2.Block diagram
10 8 9 7 6
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
Functions Functions
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
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.
1-14
SAA6579T-X(IC71):RDS Detector
KS-FX915R/KS-FX815
1.Terminal Layout
QUAL
RDDA
MUX
VDDA
GND
SCOUT
Vref
CIN
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
RDCL
T75
OSCO
OSC1
VDD
GND
TEST
MODE
2.Pin Function
Pin
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
QUAL
RDDA
Vref
MUX
VDDA
GND
CIN
SCOUT
MODE
TEST
GND
VDD
OSC1
OSC0
T75
RDCL
FunctionI/OSymbol
Non connect
RDS data output
O
Reference voltage output
O
Multiplex signal input
I
+5V Supply voltage for analog
Ground for analog part (0V)
Sub carrier output of reconstruction filter
I
Ground for digital part (0V)
O
Ground for digital part (0V)
Ground for digital part (0V)
Ground for digital part (0V)
+5V supply voltage for digital part
Oscillator input
I
Oscillator output
O
Non connect
RDS clock output
O
3.Block Diagram
4
8
7
5
3
ANI-
ALLUDING
FILTER
CLOCKED
COMPARATOR
REFERENCE
VOLTAGE
1413
5kHz
BAND PASS
(8th ORDER)
COSTAS LOOP
VARIABLE AND
FIXWD DIVIDER
CLOCK
REGENERATION
AND SYNC
6
RECONSTRUCTION
FILTER
BIPHASE
SYMBOL
DECODER
TEST LOGIC AND OUTPUT
OSCILLATOR
AND
DIVIDER
SELECTOR SWITCH
9
10
12
DUALITY BIT
GENERATOR
DIFFERENTIAL
DECODER
11
1
2
16
15
1-15
KS-FX915R/KS-FX815
LA4743K(IC301):Power AMP
1.Block diagram
IN 1
TA B
IN 2
+
2.2 F
+
2.2 F
11
1
12
Vcc 1/2 Vcc 3/4
6 20
-
+
Protective
circuit
-
+
2200 F 0.047 F
+
9
-
7
+
OUT 1+
OUT 1-
PWR GND1
8
+
OUT 2+
5
-
OUT 2-
3
PWR GND2
2
ST BY
R.F
47 F
IN 3
PRE GND
IN 4
+5V
ST ON
+
2.2 F
N.C
+
2.2 F
4
Stand by
Switch
Mute
10
+
Ripple
Filter
Mute
22
circuit
4.7 F
+
15
-
+
-
17
19
4.7K
+
OUT 3+
OUT 3-
Low Level
Mute ON
25
18
21
23
PWR GND3
OUT 4+
OUT 4-
13
14
Protective
circuit
-
+
+
-
1-16
ON TIME C
22 F
Muting &
16
+
ON Time Control
Circuit
PWR GND4
24
2.Terminal layout
3.Pin function
KS-FX915R/KS-FX815
SymbolPin No. 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
TA B
GND
OUTRRSTBY
OUTRR+
VCC1/2
OUTRFGND
OUTRF+
RIPPLE
INRF
INRR
SGND
INLR
INLF
ONTIME
OUTLF+
GND
OUTLFVCC3/4
OUTLR+
MUTE
OUTLRGND
NC
Header of IC
Power GND
Outpur(-) for front Rch
Stand by input
Output (+) for front Rch
Power input
Output (-) for rear Rch
Power GND
Output (+) for rear Rch
Ripple filter
Rear Rch input
Front Rch input
Signal GND
Front Lch input
Rear Lch input
Power on time control
Output (+) for rear Lch
Power GND
Output (-) for rear Lch
Power input
Output (+) for front
Muting control input
Output (-) for front
Power GND
Non connection
1-17
KS-FX915R/KS-FX815
UPD178018AGC-586 (IC701) : Main system control CPU
UPD178018AGC-604 (IC701) : Main system control CPU
1. Pin layout
80 ~ 61
1
60
2. Pin function
Pin No.
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
~
20
21 ~ 40
~
41
Port Name I/O Descriptions
KEY 0
KEY 1
KEY 2
LEVEL
SM
SQ
LCDCE
LCDDA
LCDSCK
BUSI/O
OPEN
BUSSI
BUSSO
BUSSCK
NC
NC
NC
NC
INLOCK
NC
GNDPORT
VDDPORT
NC
AFCK
MONO
FM/AM
SEEK/STP
NC
IFC
VDDPLL
FMOSC
NC
GNDPLL
AMEO
FMEO
IC
SD/ST
STAGE0
NC
MOTOR
I
I
I
I
I
I
O
O
O
I
I
I
O
I/O
-
-
-
-
-
-
-
O
O
O
O
O
I
I
-
I
-
O
O
-
I
I
O
Key input 0
Key input 1
Key input 2
Level meter input
S.meter level input
S.Quality level input
CE output to LCD driver
Data output to LCD driver
Clock output to LCD driver
I/O selector output for J-BUS, H : OUT, L: INPUT
Door open detect input
J-BUS Data input
J-BUS Data output
J-BUS Clock in/output
Non connect
Non connect
Non connect
Non connect
Non connect
Non connect
Port GND
Port Vdd
Non connect
AF check output, L: AF check
Monaural on /off selecting output, H:mono on
FM/AM switching output L : FM H : AM
Auto seek /stop selecting output, H: Seek, L:Stop
Pulse signal input port for Cruise control
FM/AM midle frequency counter input
PLL Vdd
FM/AM limited generator frequency input
None connect
PLL GND
AM error out output
FM error out output
GND
Station detector, Stereo signal input, H:Find Station, L:Stereo
Pull up
Non connect
Main motor output
1-18
UPD178018AGC-551 (IC701) : Main system control CPU
UPD178018AGC-551 (IC701) : Main system control CPU
Pin No.
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
Port Name I/O Descriptions
FF/REW
F/R
DOLBY
MSIN
I2CCLK
I2CDAO
I2CDAI
REEL
SUBMO1
SUBMO2
MODE
TAPEIN
STANDBY
NC
NC
NC
NC
NC
BEEP
MUTE
PCNT
TELMUTE
DIMIN
DIMOUT
ENC1
ENC2
ACCDET
POWER
RDSSCK
RDSDA
REMOCON
DETACH
J-BUSINT
REGCPU
GND
X2
X1
REGOSC
VDD
RESET
I
O
O
I
O
O
I
O
I
O
O
O
I
-
-
-
-
O
O
O
I
I
O
I
I
I
O
I
I
I
I
I
-
-
-
I
-
-
-
Output for input signal level switching for MS L : FF,REW H : PLAY
FWD,REV running direction switch signal input
Dolby on "H" output
MS input
I2C information clock output
I2C information data output
I2C information clock input
Switch for detecting tape end position
Sub motor clock direction input
Sub motor clock opposite detection drive output
Mechanism mode position detection input
Cassette in detection input H : cassette in L : cassette out
Standby position detection input H : eject side L : operation side
Non connect
Non connect
Non connect
Non connect
Non connect
Touch tone output
Mute output , L : mute on
Power ON /OFF switching output , H : power on
Telephone mute signal detection input
Dimmer signal detection input L : dimmer
Dimmer control output , Dimmer off L output
Rotary volume signal 1 input Power save : L
Rotary volume signal 2 input
Power save 1 Working togethe ACC Power save : L
Power save 2, Working together Back up by H input, stop mode
Clock input for RDS
RDS data input
Remocom input
Detach signal input H : Power save
Cut-in input for J-BUS signal
Regulator for CPU power supply, Connect the GND with0.1 F.
Ground
Connecting the crystal oscillator for system clock
Connecting the crystal oscillator for system clock
Regulator for oscillator circuit.Connect the GND with 0.1 F.
Vdd
Pull up
KS-FX915R/KS-FX815
1-19
KS-FX915R/KS-FX815
HD74HC126FP-X (IC801) : Buffer
1.Terminal layout
1
2
3
4
5
6
7
2.Block diagram
Input
14
13
12
11
10
9
8
Vcc Vcc
1A
2A
3A
4A
1C
2C
3C
See Function Table
4C
3.Pin function
Output
1Y
2Y
Output
2Y
Output
3Y
Output
4Y
Input Outout
C
A
L
X
H
L
H
H
1k
CL
Sample as Load Circuit 1
Sample as Load Circuit 1
Sample as Load Circuit 1
Y
Z
H
L
S1
1k
1-20
HA13164(IC901):REGULATOR
1.Terminal layout
123456789101112131415
KS-FX915R/KS-FX815
2.Block diagram
ANT OUT
C3
0.1u
EXT OUT
C4
0.1u
ANT CTRL
CTRL
CD OUT
C5
0.1u
AUDIO OUT
C6
10u
11
12
10
BATT.DET OUT
9
COMPOUT
6
VDD OUT
4
SW5VOUT
5
14
UNIT R:
+B
ACC
ILMOUT
R1
C7
0.1u
0.1u
C8
C1
100u
VCC ACC
8
2
1
7
Surge Protector
BIAS TSD
15
3
note1) TAB (header of IC)
connected to GND
ILM AJGND
13
C2
0.1u
C:F
3.Pin function
Pin No. Symbol Function
1
2
EXTOUT
ANTOUT
Output voltage is VCC-1 V when M or H level applied to CTRL pin.
Output voltage is VCC-1 V when M or H level to CTRL pin and H level
to ANT-CTRL.
3
4
5
6
7
8
9
10
11
12
13
14
15
ACCIN
VDDOUT
SW5VOUT
COMPOUT
ANT CTRL
VCC
BATT DET
AUDIO OUT
CTRL
CD OUT
ILM AJ
ILM OUT
GND
Connected to ACC.
Regular 5.7V.
Output voltage is 5V when M or H level applies to CTRL pin.
Output for ACC detector.
L:ANT output OFF , H:ANT output ON
Connected to VCC.
Low battery detect.
Output voltage is 9V when M or H level applied to CTRL pin.
L:BIAS OFF, M:BIAS ON, H:CD ON
Output voltage is 8V when H level applied to CTRL pin.
Adjustment pin for ILM output voltage.
Output voltage is 10V when M or H level applies to CTRL pin.
Connected to GND.
1-21
KS-FX915R/KS-FX815
VICTOR COMPANY OF JAPAN, LIMITED
MOBILE ELECTRONICS DIVISION
PERSONAL & MOBILE NETWORK BUSINESS UNIT. 10-1,1Chome,Ohwatari-machi,Maebashi-city,Japan
(No.49613)
200102(V)
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