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)