1. Press the eject button in the lower right part of the front panel. Remove the front panel assembly from the body.
Front panel assembly Eject button
Fig.1
Tab a
Removing the front chassis assembly (See Fig.2 and 3)
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
Fig.2
Heat sink
Tab a
Tab a
Front chassis assembly
Fig.3
1-3
KS-FX473R/KS-FX470R
Removing the heat sink (See Fig.4)
1. Remove the three screws A on the left side of the body.
A
Heat sink
A
Fig.4
Joints b Bottom cover
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 Rear panel
Joints b
Fig.5
Joints b Bottom cover
Joint b Joints b Rear panel
Fig.6
1-4
KS-FX473R/KS-FX470R
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 two screws C and the two screws D attaching the rear bracket on the back of the body. Remove the rear bracket. 2. Remove the two screws E attaching the main board on the bottom of the body. Disconnect connector CN901 and CN902 on the main board in the direction of the arrow.
B
C
D
Rear bracket
D C
Fig.7
CN902
Main board
E
E
CN901
Fig.8
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.
Cassette mechanism section
F
F
Top chassis
F
Fig.9
F
1-5
KS-FX473R/KS-FX470R
Removing the head amplifier board (See Fig.10)
Prior to performing the following procedure, remove the cassette mechanism section. 1. Disconnect the wire from connector CJ901 on the head amplifier board. 2. Remove the screw G and slide the head amplifier board in the direction of the arrow to unjoint the two joints c with the mechanism bracket.
Head amplifier board CJ901 Joint c
Joint c
G
Fig.10
Removing the motor board (See Fig.11)
Prior to performing the following procedure, remove the cassette mechanism section. 1. Disconnect the wire from connector CJ902 on the motor board. 2. Remove the screw H and slide the motor board in the direction of the arrow to unjoint the joint d with the mechanism bracket.
Joint d Motor board CJ902
H
Fig.11
Removing the cassette mechanism assembly (See Fig.12)
Prior to performing the following procedure, remove the cassette mechanism section, the head amplifier board and the motor board. 1. Remove the four screws I on the bottom of the cassette mechanism section.
Mechanism bracket
I
I
I
Fig.12
1-6
KS-FX473R/KS-FX470R
Removing the control switch board (See Fig.13 to 15)
Prior to performing the following procedure, remove the front panel assembly. 1. Remove the four screws J attaching the rear cover on the back of the front panel assembly. 2. Unjoint the nine joints e with the front panel and the rear cover. 3. Remove the control switch board on the back of the front panel.
J
J
J
Rear cover
J
Fig.13
Joints e
Front panel Joints e
Joints e
Rear cover
Joints e
Fig.14
Front panel
Control switch board
Fig.15
1-7
KS-FX473R/KS-FX470R
Prior to performing the following procedures, remove the head amplifier board, the relay board and the mechanism bracket.
C
FF / REW lever assembly Joint c
Removing the direction switch board (See Fig.1)
1. Unsolder the three wires a on the direction switch board. 2. Remove the one screw A switch board. attaching the direction
Joint e
Joint d
A
Soldering a
Joint b
B
Removing the FF / REW lever assembly (See Fig.1)
1. Remove the screw B attaching the FF / REW lever assembly on the back of the cassette mechanism assembly. 2. Remove the screw C on the upper side of the FF / REW lever assembly. 3. Lift and pull forward the FF / REW lever assembly to disengage the joints b, c, d and e.
Direction switch board
Fig.1
Reattaching the FF / REW lever assembly (See Fig.1)
1. Reattach the FF / REW lever assembly to the joint c on the back of the chassis. 2. Reattach the pinch-roller shaft e, the change lever d and the return link e to the chassis.
1-8
KS-FX473R/KS-FX470R
Pinch-roller (R) assembly S support plate C washer A arm spring (b) Shaft Pinch-roller (F) assembly
D
A arm spring (a) Shaft
FF roller
Playback head
Remove the P arm spring (r) from the chassis.
Remove the P arm spring (f) from the chassis.
P arm spring (r)
P arm spring (f)
Fig.2
Removing the playback head (See Fig.2)
Prior to performing the following procedure, remove the direction switch board and the FF / REW lever assembly. 1. Remove the screw D attaching the playback head. 2. Remove the C washer and pull out the FF roller. 3. Remove the S support plate, the A arm spring (a) and (b), the playback head. ATTENTION: The A arm spring (a) differs from the A arm spring (b).
Removing the pinch-roller (R) and (F) assembly (See Fig.2)
Prior to performing the following procedure, remove the direction switch board and the FF / REW lever assembly. 1. Remove the P arm spring (f) in the pinch-roller (F) assembly from the chassis. 2. Remove the P arm spring (r) in the pinch-roller (R) assembly from the chassis. 3. Draw out the pinch roller (F) and (R) assembly from the shaft. ATTENTION: 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.
1-9
KS-FX473R/KS-FX470R
Removing the cassette hanger / cassette holder (See Fig.3)
Prior to performing the following procedure, remove the FF / REW lever assembly. 1. From the rear of the unit, bend the two tabs f outwards and disengage the two joints g in the direction of the arrow. 2. 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. 3. Lift the cassette hanger / cassette holder and disengage the joint i of the return link and the eject lever.
Joint g Tab f
Cassette holder Return link Joint i Cassette hanger Eject lever
Joint h Chassis Joint h
Tab f Joint g
Fig.3
Removing the reel disc assembly (See Fig.4)
Prior to performing the following procedure, remove the FF / REW lever assembly and the cassette hanger / cassette holder. 1. Remove the C washer and pull out reel disc assembly.
C washer
Reel disc assembly
ATTENTION: Replace with a new C washer when reattaching.
Removing the motor assembly (See Fig.5)
1. Unsolder the two wires j on the motor assembly. ATTENTION: To replace the sub-belt, remove the main belt and the sub-belt from the motor pulley. Then remove the three screws E and one screw F. Replace with a new sub-belt while lifting the reel base assembly slightly. 2. Turn over the cassette mechanism assembly and remove the main belt and the sub-belt from the motor pulley. ATTENTION: The main belt can now be removed. 3. Remove the two screws G assembly. attaching the motor
C washer
Fig.4
Main-belt Flywheel (BF)
Motor assembly
Sub-belt
E
G
Motor pulley
G E F
Flywheel (BR) Soldering j
E
Reel base assembly
Fig.5
1-10
KS-FX473R/KS-FX470R Removing the Flywheel (BF) and (BR) assembly (See Fig.4 and 5)
Prior to performing the following procedure, remove the cassette hanger / cassette holder. 1. From the upper side of the cassette mechanism assembly, remove the C washer from each shaft of the flywheel (BF) and (BR). 2. Turn over the cassette mechanism assembly and remove the main belt. Pull out the flywheel (BF) and (BR) downward respectively.
C washer
Reel disc assembly
C washer
Fig.4
Removing the reel base assembly (See Fig.5 and 6)
1. Raise the part k of 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. 2. Remove the three screws E and the one screw F on the underside of the cassette mechanism assembly. ATTENTION: The reel base assembly is not repairable. Handle with care.
Flywheel (BF)
Main-belt
Motor assembly
Sub-belt
E
G
Motor pulley
G E F
Flywheel (BR) Soldering j
E
Reel base assembly
Fig.5
Inside of the reel base assembly
Pinch-roller (R) assembly
k
Selector link (B). Turn the selector link (B).
Fig.7
Fig.6 1-11
KS-FX473R/KS-FX470R Removing the mute switch board (See Fig.8)
1. Unsolder the two wires l on the mute switch board on the back of the cassette mechanism assembly. 2. Remove the screw H board. attaching the mute switch
Cassette mechanism assembly Soldering l Rower switch Motor assembly
H
Fig.8
Mute switch board
Soldering m
Cassette mechanism assembly
Removing the power switch (See Fig.9)
Prior to performing the following procedure, remove the motor assembly. 1. Unsolder the two wires m on the power switch on the side of the cassette mechanism assembly. 2. Remove the screw I attaching the power switch.
I
Power switch
Fig.9
1-12
KS-FX473R/KS-FX470R
Adjustment method
Test instruments reqired for adjustment
1. Digital oscilloscoe(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)
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.
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.pilot 7.5kHz dev Output level 0dB(1 V,50 /open terminal)
AM mode
Measuring conditions(Amplifier section)
Power supply voltage.............. DC14.4V(11V - 16V allowance) Load impedance............ 4 (4 to 8 allowance) Line out level/Impedance..............1.0V/20k load (250 nWb/m)
Frequenc Frequency band
FM: 87.5 MHz to 108.0 MHz Band AM : 522 kHz to 1620 kHz(MW) 144 kHz to 279 kHz(LW)
1-13
KS-FX473R/KS-FX470R
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 l
Remove the bottom cover. Remove the front panel assembly. Remove the top cover . Install the front panel. Confirm that current is being carried by connecting an extension cord jig. Note Available to connect to the CN701 connector when installing the front panel. 1. 2. 3. 4. 5.
Cassette mechanism
Extension cord : EXTKSRT002-6P
Main board
Front panel assembly
EXTKSRT002-6P
1-14
KS-FX473R/KS-FX470R
Arrangement of adjusting & test points
Cassette mechanism (Surface)
Motor assembly
Tape speed adjust
Playback head
Azimuth screw
Head section view Head azimuth screw
Fixed screw
Playback head
Height adjusting screw c
Height adjusting screw a
Height adjusting screw b
1-15
KS-FX473R/KS-FX470R
Mechanism adjustment section
Item 1.Head azimuth Adjusting & Confirmation Methods "Head Height Adjustment" Note 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. Adjust Std. Value
A Line
Head shield
1.Load the mirror tape ( SCC-1659 ). Adjust with height The head is at low position adjustment screw (a) and azimuth adjustment screw (b) so during FWD. 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 B Line 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 Head shield play mode. The head is at height position "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 to maximum, 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 or 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.
during REV.
Head azimuth screw Fixed screw
screw (a) screw (c) screw (b) 0 Phase 45
2.Tape Speed and Wow & Flutter
1.Check to see if the reading of the frequency counter & Wow Built-in Tape Speed flutter meter is within 2940-3090 Hz( FWD/REV ), and less volume resistor 2940-3090Hz than 0.35% ( JIS RMS ). Wow&Flutter 2.In case of out of specification, adjust the motor with a builtLess than in volume resistor. 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/ 8kHz and -4+2dB at 1kHz/125Hz. 3.When 8kHz is out of specification, it will be necessary to readjust the azimuth.
Speaker out 1kHz/8kHz : 0dB_}3dB, 125Hz/1kHz : -4dB+2dB,
1-16
KS-FX473R/KS-FX470R
Description of major ICs
AN80T05LF (IC961) : Regulator
1.Terminal layout & Block diagram
Reference Voltage ASO & Peak Current Protection
Thermal Protection
Pre Drive
Pre Drive
AMP Out
Pre Drive
Pre Drive Pre Drive
AMP Out
1 ILL 10V
2
3
4 STB
5 VDD 5.6V
6 AMP
7 VCC
8 ANT
9 COM 8.7V
10 AM 8.7V
11 FM 8.7V
12 GND
MODE2 MODE1
2.Pin function
Pin No.
1 2 3 4 5 6 7 8 9 10 11 12
Symbol ILL MODE2 MODE1 STB VDD AMP VCC ANT COM AM FM GND
Function 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
1-17
KS-FX473R/KS-FX470R UPD178018AGC555 (IC701) : CPU
1. Pin layout
80 1 ~ ~ 61 60 ~ 41 21 ~ 40
20
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 Port Name KEY 0 KEY 1 KEY 2 LEVEL SM SQ LCDCE LCDDA LCDSCK BUSI/O UNLOCK BUSSI BUSSO BUSSCK NC NC NC NC NC NC GNDPORT VDDPORT AM AFCK MONO FM SEEK/STOP NC IFC VDDPLL FMOSC AMOSC GNDPLL AMEO FMEO IC SD/ST STAGE0 NC F/R I/O I I I I I I O O O I I O I/O O O O O O I I O O I I O Descriptions 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 Non connect 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 Non connect 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
KS-FX473R/KS-FX470R
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 NC NC TELMUTE TAPEIN I2CCLK I2CDAO I2CDAI NC NC T-MUTE NC NC NC NC TAPE TUNER CD NC NC MUTE POWER NC NC NC NC NC ON STOP RDSCK RDSDA REMOCON DETACH BUSINT REGCPU GND X2 X1 REGOSC VDD NC I/O O I O O I I O O I O I I I I I I Descriptions Non connect Non connect Telephone mute signal detection input TAPE input I2C information clock output I2C information data output I2C information clock input Non connect Non connect Telephone mute signal detection input Non connect Non connect Non connect Non connect Non connect Non connect Non connect Non connect Non connect Mute output Power ON /OFF switching output , H : power on Non connect Non connect Non connect Non connect Non connect CPU power supply STOP signal output terminal 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 with 0.1 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
1-19
KS-FX473R/KS-FX470R
SAA6579T-X(IC761):RDS
1.Pin layout
QUAL RDDA Vref MUX VODA VSSA CIN SCOUT 1 2 3 4 5 6 7 8 16 RDCL 15 T57 14 OSCO 13 OSCI 12 V0DD 11 VSSD 10 TEST 9 MODE
2.Block diagram
13 14 12
4
ANTIALIASING FILTER
57 kHz BANDPASS (8th ORDER)
RECONSTRUCTION FILTER
OSCILATOR AND DIVIDER
QUALITY BIT GENERATOR
1
8
7
CLOCKED COMPARATOR
COSTAS LOOP VARIABLE AND FIXED DIVIDER
BIPHASE SYMBOL DECODER
DIFFERENTIAL 2 DECODER 15
5
VP1
3
REFERENCE VOLTAGE
CLOCK REGERATION AND SYNC
TEST LOGIC AND OUTPUT SELECTOR SWITCH
15
6
9
10
11
3.Pin function
Pin No.
Symbol
QUAL RDDA Vref MUX VDDA VSSA CIN SCOUT MODE TEST VSSD VDDD OSCI OSCO T57 RDCL
Description
Quality indication output RDS data output Reference voltage output (0.5VDDA) Multiolex signal input +5V supply voltage for analog part Ground for analog part (0V) Subcarrier input to comparator Subcarrier output of reconstruction filter Oscllator mode / test control input Test enable input Ground for digital part (0V) +5V supply voltage for digital part Oscillator input Oscillator output 57 kHz clock signal output RDS clock output
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
1-20
KS-FX473R/KS-FX470R TEA6320T-X (IC911) : E.volume
1.Pin layout 2.Block diagram
10 8 9 7 6 5 12
SDA GND OUTLR OUTLF TL B2L B1L IVL ILL QSL IDL MUTE ICL IMD IBL IAL
1 2 3 4 5 6 7 8 9 10 11 12 13 CD-CH 14 15 TAPE 16 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
21 31 2 19
POWER SUPPLY
MUTE FUNCTION ZERO CROSS DETECTOR VOLUME 1 +20 to -31 dB LOUDNESS LEFT BASS LEFT +15 dB TREBLE LEFT +12 dB
VOLUME 2 0 to 55 dB BALANCE FENDER REAR
3
VOLUME 2 0 to 55 dB BALANCE FENDER FRONT
4
16 15 13 11 14 22 20 18 17
LOGIC
SOURCE SELECTOR VOLUME 1 +20 to -31 dB LOUDNESS RIGHT BASS RIGHT +15 dB TREBLE RIGHT +12 dB
HC BUS REC
32 1
VOLUME 2 0 to -55dB BALANCE FENDER FRONT
29
VOLUME 2 0 to -55dB BALANCE FENDER REAR
30
23
25
24
26 27
28
3.Pin functions Pin No. Symbol I/O 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
SDA GND OUTLR OUTLF TL B2L B1L IVL ILL QSL IDL MUTE ICL IMO IBL IAL
Functions
Pin No. Symbol I/O 17 18 19 20 21 22 23 24 25 26 27 28
IAR IBR CAP ICR Vref IDR QSR ILR IVR B1R B2R TR I I I O I I O I
Functions
Input A right source. Input B right source. Electronic filtering for supply. Input C right source. Reference voltage (0.5Vcc) Not used Output source selector right channel. Input loudness right channel. Input volume 1. right control part. Bass control capacitor right channel Bass control capacitor right channel or output to an external equalizer. Treble control capacitor right channel or input from an external equalizer. Output right front. Output right rear. Supply voltage. Serial clock input.
I/O Serial data input/output. O O I I I O I I I Ground. output left rear. output left front. Treble control capacitor left channel or 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. Input loudness. left control part. Output source selector. left channel. Not used Not used Input C left source. Not used Input B left source. Input A left source.
29 OUTRF O 30 OUTRR O 31 32
Vcc SCL I
1-21
KS-FX473R/KS-FX470R
HA13158A (IC941) : Power amp
1. Pin layout
1
~
23
2. Block diagram
14 2 18 6
INVCC STBY
PVCC2
PVCC1 +
3 4 5 7
IN1
1
INPUTBUFFER1
AMP1 -
+ IN2
11
INPUTBUFFER2
AMP2 -
8 9 15
+ IN3
13
INPUTBUFFER3
AMP3 -
16 17 19
+ IN4
23 10
INPUTBUFFER4
AMP4 -
20 21
MUTE
PROTECTOR (ASO SURGE, TSD)
12 22
TAB
UPC1228HA(IC901):Head amp
IN1 NFB1 OUT1 VCC GND OUT2 NFB2 IN2
1 ANP1 2
3
4
5
6
7 ANP2 8
UPC1228HA
1-22
KS-FX473R/KS-FX470R
LC75823W (IC651) : LCD driver
DI CL CE OSC Vss VDD2 VDD1 INH VDD COM3 COM2 COM1 S52 S51 S50 S49
1. Pin Layout & Symbol
S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15 S16
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 1 48 2 47 3 46 4 45 5 44 6 43 7 42 8 41 9 40 10 39 11 38 12 37 13 36 14 35 15 34 16 33 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
S48 S47 S46 S45 S44 S43 S42 S41 S40 S39 S38 S37 S36 S35 S34 S33
2. Pin Function I/O Function O Segment output pins used to display data transferred by serial data input. 53 to 55 COM1 to COM3 O Common driver output pins. The frame frequency is given by : t0=(fosc/384)Hz. VDD 56 -- Power supply connection. Provide a voltage of between 4.5 and 6.0V. INH 57 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. VDD1 58 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. VDD2 59 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. Vss 60 -- Power supply connection. Connect to GND. OSC 61 I/O Oscillator connection. An oscillator circuit is formed by connecting an external resistor and capacitor at this pin. Serial data CE : Chip enable 62 CE interface connection CL CL : Sync clock 63 I to the controller. 64 DI DI : Transfer data Pin No. 1 to 52 Symbol S1 to S52
S17 S18 S19 S20 S21 S22 S23 S24 S25 S26 S27 S28 S29 S30 S31 S32
1-23
KS-FX473R/KS-FX470R
HD74HC126FP-X (IC751) : Buffer
1.Terminal layout
1C 1A 1Y 2C 2A 2Y GND
3.Pin function 14 13 12 11 10 9 8
VU 4C 4A 4Y 3C 3A 3Y
1 2 3 4 5 6 7
Input C A L X H L H H
Output Y Z H L
Note) H:High level L:Low level X:Irrelevant Z:Off(High-impedance) State a 3-state input
2.Block diagram Vcc
Vcc
1k 1A 2A 3A 4A 1C 2C 3C 4C
Output
1Y 2Y CL
S1
Input
See Function Table
1k
2Y 3Y
Output
Sample as Load Circuit 1
Output
Sample as Load Circuit 1
Output
4Y
Sample as Load Circuit 1
Note) CL includes probe and jig capacitance
1-24
KS-FX473R/KS-FX470R
< MEMO >
1-25
KS-FX473R/KS-FX470R
VICTOR COMPANY OF JAPAN, LIMITED MOBILE ELECTRONICS DIVISION PERSONAL & MOBILE NETWORK BUSINESS UNIT. 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan
200202
(No.49689)
KS-FX473R/KS-FX470R
Block diagram
5
J1 ANT TU1 FM/AM TUNER
MUX TU-L,TU-R
IC911 E.VOLUME
4
FED-L FWD-R REV-L REV-R
IC761 RDS DETECTOR
SM SQ AFCK MONO FM SEEK/STOP IFC FMOSC AMOSC AMEO FMEO SD/ST
TAPE-L TAPE-R
OUTFL OUTFR OUTRL OUTRR
IC941 POWER AMP
FLOUT+ FLOUTFROUT+ FROUTRLOUT+ RLOUTRROUT+ RROUT-
P.B. HEAD
IC901 HEAD AMP
CN901
CP901
3
MOTOR MUTE SWITCH RADIO/TAPE SWITCH
CJ901
TAPE-L TAPE-R
F/R RDSCK RDSDA
I2CSCK I2CDAO REAR-L REAR-R
MOTOR
CN902
CP902
CJ902
T-MUTE
MOTOR T-MUTE TAPEIN
TAPEIN
IC701 CPU
SI BUS INT SO SCK I/O CH-L CH-R
IC961 REGULATOR
2
LCD
COM1 COM2 COM3 S8~S52
IC651 LCD DRIVER
IC751 JVC BUS
LCDDA LCDCK LCDCE KEY0 KEY1 KEY2 LCDCE LCDCK LCDDA
BUS SCK BUS SI/SO
J751 CD-CH J931 LINE OUT CP961 SPK BATT
CP701
CJ701
KEY MATRIX S601~S620
KEY0~KEY2
1
A
B
C
D
E
F
G
2-1
KS-FX473R/KS-FX470R
KS-FX473R/KS-FX470R
Standard schematic diagrams
Main amp section
TU1 QAU0222-001 IC941 HA13158A
5
J1 QNZ0009-001 L1 4.7U D1 1SS119-041 D2 1SS119-041 C29 10p C761 C251 1/50 R151 0.0015 0.015 22k 1/50 10k 0.022 R251 10k 0.0015 22k C253 C153 1/50 1/50 R113 R117 10k R112 R911 22k C117 0.0056 270 2.2k C114 0.15
R141 15k
R32
R144 39k
DTC114EKA-X
0.015
C1 Q2
C144 C143
4.7/25
C151 0.1/50
R143 39k
R142 15k
470p 470p
0
C942 0.1
C943 0.1
2SC2412K/R/-X Q3
C944 0.1
C154
C152
C254
R252 C252
R152
R244 39k
R243 39k
C119 C118
1/50 1/50
Q4 DTA114EKA-X
C18 0.22/50
C17
150P
C111 1/50
C113 0.0082
C24 0.047
R153
R253
4.7k
C25
Q151 2SC2412K/R/-X 4.7k
R3
Q251 2SC2412K/R/-X 0.1 4.7k CH.L TAPE.L
0.22/50 C116 0.033
R136 1k
R236 1k
R242 15K
R9 1k R10 C6
R26 10k R27 1k C20 0.001 Q12 R29 1.5k R12 1k Q11 C21 2.2/50 Q6 2SA1037AK/RS/-X R8 4.7k Q1 DTC114EKA-X 10K R303 R301 47K R305 15K R7 47k C30 47p D3 MA152WK-X
47k
R4
2SA1037AK/RS/-X
D5 1SS119-041
D951 1SS133-T2
Q951 DTA114EKA-X Q961 2SA1037AK/RS/-X R959 2.2K Q959 DTC114EKA-X C218 1/50 C215 0.22/50 C212 1/50 C211 1/50 27K R960 IC911 TEA6320T-X C762 560P
3.9k 0.056 C7 0.012 Q10 Q7
R235 R135 D931 R132 MA152WA-X 2.2k R232 2.2k
100 100
Q131 2SC2412K/R/-X C969 Q231 2SC2412K/R/-X C961 D961 0.047 2200/16 1N5401-TU-15
4
C766 47/16 C767 0.01
C978 4.7/25
Q5
R116 22k
C112 1/50
C115
R24 R25
1k 1k
R241 15K
C243 470p C244 470p
C945
R212 C213 0.0082
R216 8.2 22K 3.3k C765 47p TAPE.R R761 2.2k C763 2.2/50 R763 CH.R 22k
D6 R14 470 MTZJ9.1C-T2 C9 220/10
R306 470 Q302 C305 2.2/50
C219 1/50 100/16 R912 270 Q960 2SA1037AK/RS/-X
R30
R34
R302 47K C301 330p R5
C217
0.0056
X761 QAX0263-001Z
2SD601A/R/-X C304 2SD601A/R/-X Q301 0.01 C302 0.1 R307 10K R304 2.2K
C214 0.15 C216
TELMUTE MA152WA-X R980 1K D980 DTC114EKA-X Q980
R962 R977 180 R978 47K R941 4.7k 6.8K
R961 47
R217 10k
R762
22k
2.2k
C911 47/16
R963 12K
C912 100/16
C303
R213 2.2k
0.1
R913
10/16
C962
IC761 SAA6579T-X
2.2k
C764 82p
C913
10
L961 QQRO528-002
0.033
Q978 DTC114EKA-X D977 MA152WK-X
R743 10K
0.047 C970 C932
C980 0.047
0.22
C979 10/16
C941 0.1
DTA114EKA-X
DTA114EKA-X
D981 MA152WA-X CN901 QGB1214J1-06S 9V F/R TAPE-L 4.7k TAPE-R TAPE-IN 4.7k Q13 DTC114EKA-X R736 Q965 DTC114EKA-X R975 24K R974 12K 9V D982 MA152WK-X R749 10K
Q979
Q981 QMFZ047-100-T
D978 MTZ11BT-77
C984 220/6.3
C977 220/6.3 C981 100/6.3
!
J931
R733
R734
10K
3
D776 DSK10C-T1 T-MUTE
IC961 Q967 2SA1037AK/RS/-X
AN80T05LF
2SC2412K/R/-X Q701 TAPEIN R737 47K
TAPE-IN
TELMUTE
T-MUTE
TAPEIN
CN902 QGB1214J1-06S R701 R702 R703 R704 270 270 270 270
F/R
L701 47u R740 R979 R750 47k 47K 47k Q963 2SA1037AK/RS/-X R966 47k D963 MA152WA-X C982 10/16 D966 220/6.3 DSK10C-T1 C971 0.1 D965 DSK10C-T1 10/16
KEY0 KEY1 KEY2 LCDCE LCDCK LCDDA R708 100k R713 10k R709 100k
TUNER SIGNAL TAPE SIGNAL CD CHANGER SIGNAL FRONT SIGNAL REAR SIGNAL
C966
R967
2.2k
10/16
2
RB721Q-T2 D701
R746 R738 R747
47K 47k 47K
R710 4.7K C707 0.1 C708 220/10 47K R705
2SB1322/RS/-T Q962 R969 2.2K R970
Q966
10/16
C963
C967
Q964 DTC114EKA-X
C965 220/10
D744 DSK10C-T1
R748
47K
C964
DTC114EKA-X
C705 0.001 C703 C701 27P C702 27P R755 R756 100k R773 47k SO I/O R757 100k R758 100 SCK QAX0406-002Z KEY0 C709 100/6.3 10k SI KEY2 KEY1 C704 0.1 R706 47K R720 4.7k R719 4.7k R718 4.7k R715 R716 R717 R712 10k 10k 10k 10k 0.1
X701 R711 390
IC701
4.7k
C751 0.1
R727
R759
330k
J751 QNZ0095-001
B
R752
C
SI SO SCK
I/0
R754 100
330k
IC751 HD74HC126FP-X
LCDCE LCDDA LCDCK
R724 R725 R726
4.7k 4.7k 4.7k
R753 22k
R721 R722 R723
1
4.7k 4.7k 4.7k
2-2
D
10k
Parts are safety assurance parts. When replacing those parts make sure to use the specified one.
E
G
QAM0158-001
1 3 4 2 5
LCD & Key control section
A
R640 R632 R634 D622 820 820 R642 820 R633 R631 820 820 R643 D603 820 D620 R644 820 5 R64 D623 D602 D616 D615 R646 820 R647 820 D613 D611 D601 R648 820 R649 D624 D610 D609 820 D612 D614 820 D619 D618 D621 330 330 R641
B
R651 D605 D604 510 510 R650 PL601 QLL0092-001 PL603 QLL0092-001 R621 R622 R623 10K 10K 10K
VMC0335-001 CP701
C
D655 MA152WK-X D654 MA152WK-X D653 MA152WA-X S614 S607 270 270 S601 150k D652 MA152WA-X 270 R601 R606
QLD0145-001
D
R612 S615 R613 330 S616 R614 390 S609 S608 330 390
LCD1
S8 S9 C653 C652 C651 R662 1.5k R661
S602 R602 330
0.1
47k
680p
4.7/6.3
R607 S603 R608
R603 390
E
S604 S617 R615 470 S618 R616 560 S619 S612 S611 R610 560 LC75823W S610 R609 470 S605 R605 560 S606 IC651 R604 470
S10 S11 S12 S13 S14 S15 S16 S17 S18 S19 S20 S21 S22 S23 S24 S25 S26 S27 S28 S29 S30 S31 S32 S33 S34 S35 S36 S37 S38 S39 S40 S41 S42 S43 S44 S45 S46 S47 S48 S49 S50 S51 S52 COM1 COM2 COM3
F G
2-3
R617 820 S620 S613
R611 820
KS-FX473R/KS-FX470R
KS-FX473R/KS-FX470R
KS-FX473R/KS-FX470R
Head amp & Mecha control section
5
CJ901 QGA2002C1-05
4
IC901 UPC1228HA
C203 100p
R204 330k
R104 330k
C103 100p
R201
CJ902 QGA2002F1-06
R101 100/10
C202
C205 0.01
15k
3
0.47/50
15k
C901
C105 0.01
C102 100 C101
R203
100
R901 120
R103
C201 820p
C204
47/6.3
C104 47/6.3
820p
0.47/50
2
TAPE SIGNAL
CP902 QGB1214K1-06S CP901 QGB1214K1-06S
1
A
B
C
2-4
D
E
F
G
KS-FX473R/KS-FX470R
Printed circuit boards
C105 C101
R103
Main board
1 FSMW1075B
C104
C102
1
FSMW1075C
C204
CJ901
R101
R104
C103
CJ902
C901
5
B913
C205 C203 R204 8 1
R203
C201
IC901
R901
CP902
C202
J1
R135
R136
B774 Q131
D961
J931
C932
R S.GND L GND F/R 9V
5
CP901 6
R201
R235
R970 C965 Q231 CN901
Q962
R969
Q966 C980
R963
T02 L2
C2
R236
C111
1 2
B5
C979
Q960
R959
B773
C971
R132
R232
C941
L1 B750 1
R24
R9
C966
C9
C970 1 R14 IC961 B6 C963 C967 R112
Q961 R960
Q7
R10
D966
B747
C211
C962
D965
C28
R962 Q959
D931
R961
C143 R143
D6
C7
C6
5
Q5
R5 R4
D1
C17
R8
R12
Q1
D5
B751
R142
C243 R242
C113
C112
C114
C29
R27
B772
10 R32 D3 Q13
1 Q6
B717
C153
Q11 Q12
B712
C216
B711
C219
R25
C119
R913
C20
B742
IC911
C942
C24
C118
R7
C21 B708
B72
C116
B74
C115
R26
C117
B87
R141
R244 R241 C944
B776 C913
R978 R941
C30
C18
B707
C911
C212
C253
C218
R29
R252
C215
C214
R152
15
R749 C151
C252
C217
C912
C213
B716
B770 B19
Q965 R911 R709 R977 B759 C961 C969 R974 B775 R980
R967
R212
C154
R213
R979 R740
R302
R34 C301
R966
C251
R251
R912
C152
R746
B724
R733 Q701
R736
R151
B706
Q967
R748
R734
B752
B744
R738
C302
B20
C254
R747
40
L701 Q963
R975 D776 Q964 C945
B768
C710
R712
Q3 R153 C764
Q151
R750
B757
B702
B715
C303 R304 R307
Q4 R3 Q951
B771
D951
B703
Q251
R737
Q980
R253
R728
D980 B753
Q978 C978
B745
B754
C1
C705
C761
R762
C765
B746
R705
R751
3
R301
C25
C304
R761
Q2
20
B755
21
R730
B769
D981
2
B741
Q302
C708
X761
B767
61
B720
R306
B714
C707
R714 R743 B758
D982 B722 D977 B11
CN902
Q301
60
1 R710
Q979
R771
C767
B756
B704
D744
R303 R305
IC761
R721
R711 1 R706 80
C701
D701
B766
R754 B29 B30 R755 R723 14 R753 Q981
C305
C763
B740
C703
1
C766
C704
X701
R726
R715
R716
C968
R702
R703 R704
R763
C762
R724
R701
R725
C702
R757
D740
R720
R727
R773 IC751
R752
C984
D978
R719
R718
R717
R758
D731
C768
15 1 2 14
C712
D734
D739 R713
R708 D741
R759
R722
1
7 C981
R707
D738
B701 [REMOCON]
R756
C751
C964 C977
D742
D732
D733
D735
D736
2
S601
D623 D653
C711
R601 R640 R641 R643 R642 S602 D618 R606 D621 S03
R644
R648
D655 D609
R616
R617 D610 R646 S619 R647
D619 R603
R602
S607
PL601 R604
PL603
R615
D622
S604
D624
R605
R607
D604
D605
LCD1 R608 S609
D615
S616
S606
S603
FSMW1077A
S608
S610
S611
S613
S612
S614
S615
D613
T03
C651
R661
D652
R631
Front board (Reverse side)
C652 PL603 33 17 R662 C653 CP701 PL601 49 R650 R651
R633
1
D654
R623
R663
S617
D603
D602
D601 R609
R610
D614
R611
D616
R612
D611
R613
D612
S618
D620
S605
S620
Front board (Forward side)
R645 R649
C943
4
D2
Q10
C144 D963 B16 R144 C244 R243
R30
R113
2-5