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-FX280
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 Joints b Rear panel
Fig.5
Joints b Bottom cover
Joint b Joints b Rear panel
Fig.6
1-4
KS-FX280
Removing the main board (See Fig.7 and 8)
Prior to performing the following procedure, remove the front panel assembly, the front chassis assembly, the heat sink and the bottom cover. 1. Remove the screw B, the five screws C and the two screws D attaching the rear bracket on the back of the body. Remove the rear panel. 2. Remove the two screws E attaching the main board on the bottom of the body. Disconnect connector CN701 on the main board in the direction of the arrow.
C
B
C
D
Rear panel
D C
Fig.7
Main board
E
E
CN701
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-FX280
Removing the control switch board (See Fig.10 to 12)
Prior to performing the following procedure, remove the front panel assembly. 1. Remove the four screws G attaching the rear cover on the back of the front panel assembly. 2. Unjoint the eleven joints c with the front panel and the rear cover. 3. Remove the control switch board on the back of the front panel.
G
G
G
Rear cover
G
Fig.10
Joints c
Front panel
Joints c
Joints c Rear cover Joints c
Fig.11
Front panel
Control switch board
Fig.12
1-6
KS-FX280
REFERENCE: Prior to performing the following procedures, turn the mode gear on the bottom of the body until the respective part comes to the EJECT position (Refer to Fig.1).
Removing the reinforce bracket (See Fig.1 and 2)
1. Remove the screw A attaching the reinforce bracket on the bottom of the body. 2. To release joint a, turn and detach the reinforce bracket from the side bracket assembly as shown in Fig.2
Mode gear
Reinforce bracket
A
Fig.1
Removing the cassette guide (See Fig.3)
1. Turn the mode gear to set to RVS play or subsequent mode. 2. Remove the cassette guide from the main chassis while releasing each two joint tabs b in the direction of the arrow.
Joint a
Reinforce bracket
Removing the head board (See Fig.4)
1. Remove the screw B on the upper side. Unsolder the wires on the under side of the head board, if necessary. REFERENCE: When reassembling, twist the wires by turning the head board twice remarked c and pass through the notch d as shown in Fig.4.
Fig.2
Head board
Soldering
B
Cassette guide
Head board notch d
Tab b
Tab b
c
Fig.3
Fig.4
1-7
KS-FX280 Removing the load arm (See Fig.5)
1. Remove the E-washer attaching the load arm. 2. Move the load arm in the direction of the arrow and release the joint e on the cassette catch.
E-washer Load arm
Joint e
Fig.5
Cassette holder assembly
Removing the cassette hanger assembly / cassette holder (See Fig.6 to 9)
1. Check the mode is set to EJECT. Push down the front part of the cassette holder and move in the direction of the arrow to release the joint f. 2. Move the rear part of the cassette hanger assembly in the direction of the arrow to release it from the two joint bosses g. 3. Release the holder stabilizer spring from the hooks h and i, then pull out from the cassette hanger assembly. 4. Bring up the rear side of the cassette hanger assembly to release the joint j and k. 5. Pull out the cassette catch from the cassette hanger assembly.
Side bracket
Boss g
Cassette hanger assembly Boss g
Joints f
Cassette holder assembly
Fig.6
Cassette hanger assembly Cassette stabilizer spring
Hook i Hook h
Fig.7
Cassette hanger assembly
Cassette holder assembly
Cassette catch
Cassette holder assembly
Cassette hanger assembly Hook j Hook k
Fig.8
Fig.9
1-8
KS-FX280
Removing the side bracket assembly (See Fig.10 to 12)
1. Remove the screw C assembly. attaching the side bracket
Joint m
Side bracket assembly Joint l
2. Detach the front side of the side bracket assembly upward and pull out forward to release the joint l and m in the rear. CAUTION: When reassembling, make sure that the boss n of the main chassis is set in the notch of the load rack under the side bracket assembly. Do not reattach the load rack on the boss n.
C
Side bracket assembly
Fig.10 CAUTION: After reattaching the side bracket assembly, confirm operation.
Side bracket assembly Joint l Joint m
Load rack
Boss n Boss n Load rack
Fig.11
Fig.12
1-9
KS-FX280
Removing the pinch arm (F) assembly (See Fig.13 and 14)
1. Remove the polywasher and pull out the pinch arm (F) assembly. 2. Remove the compulsion spring.
Polywasher Pinch arm (R) assembly Pinch arm (F) assembly Polywasher
Removing the pinch arm (R) assembly (See Fig.13 and 15)
1. Remove the polywasher and pull out the pinch arm (R) assembly.
Polywasher
Fig.13
Pinch arm (F) assembly
Compulsion spring
Removing the slide chassis assembly (See Fig.16 and 17)
REFERENCE: It is not necessary to remove the head and the tape guide. 1. Move the slide chassis assembly in the direction of the arrow to release the two joints o and remove from the main chassis. 2. Remove the rack link. CAUTION: When reassembling, first reattach the rack link, and next fit the boss p and hook q of the slide chassis assembly to the hole of the main chassis, and engage the two joints o.
Pinch arm (R) assembly
Polywasher
Fig.14
Fig.15
Head Tape guide Boss p
Rack link Hook q
Joint o Joint o
Slide chassis assembly
Fig.16
Fig.17
1-10
KS-FX280
Removing the head / tape guide (See Fig.18 and 19)
REFERENCE: It is not necessary to remove the slide chassis assembly. 1. Remove the band attaching the wire to the head. 2. Remove the two screws D, the head and the head support spring. 3. Remove the pinch arm spring from the tape guide. 4. Remove the tape guide and the pinch spring arm. CAUTION: When reattaching the pinch arm spring, set both end of it to the pinch spring arm ( remarked r).
D
Slide chassis assembly
Head Tape guide
Fig.18
D
Pinch arm spring
Head Head support spring
CAUTION: When reattaching the head, set the wires into the groove of the tape guide (Fig.18).
Tape guide r
Removing the flywheel assembly (F) & (R) (See Fig.20 and 21)
REFERENCE: It is not necessary to remove the slide chassis assembly. 1. Remove the belt at the bottom. 2. Remove the two polywashers on the upper side. 3. Pull out each flywheel assembly downward.
Pinch spring arm
r
Slid chassis assembly
Fig.19
Polywasher
Flywheel assembly (F)
Belt
Polywasher
Flywheel assembly (F)
Flywheel assembly (R)
Fig.20
Fig.21
Flywheel assembly (R)
1-11
KS-FX280
Disassembling the flywheel assembly (F) (See Fig.22 and 23)
1. Push and turn counterclockwise the spring holder (F) to release the three joints s on the bottom of the flywheel. 2. The spring holder (F), the TU spring and the friction gear play come off.
Joints s Flywheel assembly (F) Flywheel assembly (R)
3. Remove the polywasher and felt.
Joints t
Disassembling the flywheel assembly (R) (See Fig.22 and 24)
1. Push and turn clockwise the spring holder (R) to release the three joints t on the bottom of the flywheel. 2. The spring holder (R), the FF spring and the friction gear FF come off. 3. Remove the polywasher and the felt.
Joint t Joint s
Fig.22
Polywasher Polywasher Spring holder (R) Spring holder (F) TU spring FF spring
Removing the reel board (See Fig.25 and 26)
1. Remove the two screws E attaching the reel board.
Friction gear FF
2. Move the reel board in the direction of the arrow to release the joint u. 3. Unsolder the wires if necessary. CAUTION: When reattaching, confirm operation of the MODE switch and the ST-BY switch.
Friction gear play
Felt
Felt
Flywheel assembly (F)
The mode position between EJECT and ST-BY is optimum for reattaching. Connect the card wire extending from the reel board to the FFC pad before reattaching the reel board.
FFC pad
Flywheel assembly (R)
Fig.23
Fig.24
FFC pad
CT-1 switch
E
Joint u MODE switch
Reel board
Soldering ST-BY switch
E
Fig.25 Fig.26
1-12
KS-FX280
Removing the gear base arm / gear base link assembly (See Fig.27 to 29)
1. Move the gear base arm in the direction of the arrow. 2. Insert a slotted screwdriver to the gear base spring under the gear base arm, and release the gear base arm upward from the boss on the gear base assembly. 3. Remove the gear base arm from the main chassis while releasing the two joints v. 4. Move the gear base link assemby in the direction of the arrow to release the two joints w.
Gear base link assembly
Joint w
Gear base arm Joints v
Hook x FFC pad Hook x
Joint w
Fig.27 REFERENCE: When reattaching the gear base arm, make sure that the boss on the gear base assembly is inside the gear base Gear base spring spring.
Gear base arm Screwdriver
Removing the FFC pad (See Fig.27 and 29)
1. Push each joint hook x of the FFC pad and remove toward the bottom. Fig.28
Gear base link assembly
Gear base arm
FFC pad
Fig.29
1-13
KS-FX280
Removing the mode gear (See Fig.30 and 33)
1. Remove the polywasher on the bottom and pull out the mode gear.
Mode switch actuator
Mode gear
Removing the mode switch actuator (See Fig.30, 31 and 33)
1. Pull out the mode switch actuator at the bottom.
Direction plate Direction link
Polywasher
REFERENCE: When reattaching the mode switch actuator to the main chassis, make sure to set on the shaft and insert y into the slot z.
Fig.30
Direction plate Slot z Mode rack assembly
Removing the direction link / direction plate (See Fig.31 to 33)
1. Remove the polywasher attaching the direction link. 2. Bring up the direction link to release the three joints a', b' and c' at a time. 3. Move the direction plate in the direction of the arrow to release the two joints d'. REFERENCE: When reattaching the direction plate, engage the two joints d' and move in the direction of the arrow (See Fig.32). REFERENCE: When reattaching the direction link, move the direction plate in the direction of the arrow and engage the three joint a', b' and c' at a time (See Fig.33).
Joints d' Joints d'
Joint c' Direction link
Joint b' Joint a' Polywasher
Fig.31
Direction plate Mode rack assembly Joint k' Joint k'
Joint l'
Removing the mode rack assembly (See Fig.31 and 32)
1. Move the mode rack assembly in the direction of the arrow to release the two joints k' and the joint l'. REFERENCE: When reattaching, set the two k' on the bottom of the mode rack assembly into the slots of the main chassis and move in the direction of the arrow (See Fig.32).
Fig.32
Direction link Mode switch actuator Polywasher
y Mode gear
Direction plate Mode rack assembly
Fig.33
1-14
KS-FX280
Removing the gear base assembly / take up gear / reflector gear (See Fig.34 to 36)
1. Push in the pin e' of the gear base assembly on the upper side of the body and move the reflector gear toward the bottom, then pull out. 2. Remove the polywasher on the bottom and pull out Gear base assembly Pin e' the take up gear. 3. Move the gear base assembly in the direction of the arrow to release it from the two slots f' of the main chassis. REFERENCE: The parts are damaged when removed. Please replace with new ones. Fig.34
Slot f'
Slot f'
Polywasher Take up gear
Reflector gear
Fig.35
Removing the reel driver / reel spindle (See Fig.36)
Reel driver Reel driver Reel driver spring Reel spindle Gear base assembly
1. Draw out the reel driver from the shaft on the main chassis and remove the reel driver spring and the Reel driver spring reel spindle respectively. CAUTION: The reel driver is damaged when removed. Please replace with a new one.
Reel spindle
Slots f' Main chassis
Take up gear Reflector gear Polywasher
Fig.36
1-15
KS-FX280
Removing the side bracket assembly (See Fig.37 to 41)
1. Remove the eject cam plate spring. 2. Push the joint g` through the slot to remove the load rack downward.
Joint g'
3. Move the eject cam limiter in the direction of the arrow to release it from the boss h' of the side bracket assembly and from the two joints i'. 4. Move the eject cam plate in the direction of the arrow to release the joint j'. CAUTION: When reassembling, confirm operation of each part before reattaching the eject cam plate spring.
Eject cam plate spring Side bracket assembly Boss h' Eject cam limiter Boss h' Joint i' Joint i' Side bracket assembly Eject cam limiter
Load rack
Fig.37
Joint g'
Joint i'
Eject cam plate
Joint i'
Fig.39
Load rack
Side bracket assembly
Fig.38
Side bracket assembly Boss h'
Eject cam plate Joint j' Eject cam plate Joint j'
Fig.40
Fig.41
1-16
KS-FX280
Removing the main motor assembly / sub motor assembly (See Fig.42 to 44)
1. Remove the belt at the bottom. 2. Remove the polywasher and pull out the mode gear. 3. Pull out the reduction gear (B). 4. Remove the polywasher and pull out the reduction gear (A). 5. Remove the two screws F attaching the main motor assembly. 6. Remove the two screws G attaching the sub motor assembly. 7. Unsolder the wires on the reel board if necessary. CAUTION: When reassembling, adjust the length of the wires extending from the sub motor asswmbly by attaching them to the side of the sub motor assembly with the wires extending from the main motor assembly using a spacer.
F
Belt Reduction gear (B)
Main motor assembly Reduction gear (A) Polywasher Sub motor assembly
G
Mode gear Polywasher
Fig.42
Reduction gear (B) Polywasher
G
Reduction gear (A)
F
Spacer Main motor assembly Sub motor assembly
Fig.43
Main motor assembly
Sub motor assembly
Spacer
Fig.44
1-17
KS-FX280
Adjustment method
Test Instruments reqired for adjustment 1.Digital osclloscope(100MHz) 2.Frequency Counter meter 3.Electric voltmeter 4.Wow & flutter meter 5.Test Tapes VT724 for DOLBY level measurement Tuner area Band range FM : 87.5MHz to 107.9MHz AM : 530kHz to 1710kHz DUMMY LOAD
Exclusive dummy load should be used for AM and FM dummy load,there is a loss of 6dB VT739 For playback frequency measurement between SSG output and antenna input. The VT712 For wow flutter & tape speed measurement loss of 6dB need not be considered since VT703 For head azimuth measurement direct reading of figures are applied in this working standard. Cassette type for CTG-N 6.Torque gauge (mechanism adjustment) Measuring conditions(Amplifier section) Power supply voltage Load impedance Line out 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). Playback head Arrangement of Adjusting Cassette Mechanism Section Capstan motor Cassette mechanism (Surface) Tape speed adjust DC14.4V(10.5~16V) 4 (2Speakers connection) 20k
Azimuth screw (Forward side)
Azimuth screw (Reverse side)
1-18
KS-FX280
Arrangment of adjusting
Head amplifier board section (Reverse side)
C413
VR402:Rch (Dolby NR level adj)
C419 C414 C421 R415 C416 C418 R412
VR401:Rch (Dolby NR Frequency response adj)
11
R411
R410
R416
C422
R414
C412 VR401 1
Q401 1
B407
VR402
B410 B411
R418 21 R413
C410
R408 B401
R420
R417
B402
1
R401
T11 FSMW1093A
B408
Q403
C424
C417
R423
R407 C402 C408 R403 C407 R402 C403 C401 R404
2
C411
C405 C406 R406 R405 C404
R422
31
R424
C423
R426
B406
B403
B404
B412
2
CJ403
B405
B409
C409
IC401
D401
C425
IC402 R425
D402
C415
CJ401 B413 1
1
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
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 CP701 connector when installing the front panel. Extension cord EXTKSRT002-18P 1. 2. 3. 4. 5.
to Cassette mechanism
Main board to Main board
EXTKSRT002-18P
Front panel assembly
Q402
1-19
KS-FX280
Item
1. Head azimuth adjustment
Conditions
Test tape: SCC-1659 VT703(10kHz)
Adjustment and Confirmation methods S.Values
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.
Adjust
A line
1. Load the SCC-1659 mirror tape. Adjust with height adjustment screw A and azimuth Head shield adjustment screw B so that line A of the The head is at low position mirror tape runs in the center between Lch during. and Rch in the reverse play mode. 2. After switching from REV to FWD then to REV, check that the head position set in procedure 1 is not changed. (If the position has shifted, adjust again and check.) 3. Adjust with azimuth adjustment screw B so that line B of the mirror tape runs in the center between Lch and Rch in the forward play mode. Head azimuth adjustment 1. Load VT724 (1kHz) and play it back in the reverse play mode. Set the Rch output level to max. 2. Load VT703 (10kHz) and play it 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 . 3. Engage the reverse mode and adjust the output level to max, with azimuth adjustment screw C. (The phase difference should be 45 or more.) (0 ) 4. When switching between forward and reverse modes, the difference between channels should be within 3dB. (Between FWD L and R, REV L and R.) 5. When VT721 (315Hz) is played back, the level difference between channels should be within 1.5dB. 2. Tape speed Test tape: VT712 and wow (3kHz) flutter confirmation 1. Check to see if the reading of the F, counter / Tape speed: Built-in volume resistor wow flutter meter is within 3015 3045(FWD 3015 3045Hz / REV), and less than 0.35% (JIS RMS). Wow 2. In case of out of specification, adjust the flutter: less than 0.35% motor with a built-in volume resistor. Speaker out 1kHz / 63Hz :0 3db 1kHz / 10kHz : -1 3db B line
Head shield The head is at High position during REV. Output level: Maximum PBHead FWD Adj B
REV Adj C
HEIGHT Adj A
phase
(45 )
3. Play back 1. Play test tape VT724, and set the volume Test tape: VT724 position at 2V. frequency (1kHz) response VT739 confiramation (63Hz / 1kHz / 10kHz) 2. Play test tape VT739 and confirm. 1kHz / 10kHz: -1 3dB, 1kHz / 63Hz: 0 3dB, 3. When 10kHz is out of specification, it will be necessary to read adjust the azimuth.
The tuner section is of an adjustment-freedesign. In case the tuner is in trouble, replace the tuner pack.
1-20
KS-FX280
Description major of Ics
PT6523LQ (IC651) : LCD driver
1.Pin layout
48 ~ 33 49 64 1 ~ 16 32 17
2.Block daiagram
COM1 COM2 COM3 SG52 SG5 SG4 SG3 SG2 SG1
VDD1 VDD2 INH
COMMON DRIVER
EGMENT DRIVER & LATCH
OSC
CLOCK GENERATOR SHIFT REGISTER
DI CLK CE VDD VSS
ADDRESS DETECTOR
3.Pin function Pin No. 1 ~ 52 53 ~ 55 56 57 Pin Name SG1 ~ SG52 COM1 ~ COM3 VDD I/O O O I Description Segment output pins Common driver output pins Power supply Display OFF control input pin. When this pin is "LOW", the display is forciblyturned OFF. (SG! to SG52, COM1 to COM3 are set to "LOW"). When this pin is set to "High", the display is ON. (See Note 1*) Used for the 2/3 bias voltage when the bias voltages are provided externally. Connect to VDD2 when 1/2 bias is used. Used for 1/3 bias voltage when the bias voltages are provided externally. Connect to VDD1 when 1/2 bias used. Ground pin Oscillation Input/Output pin Chip enable pin Synchronization clock Transfer data pin
INH
58
VDD1
I
59
VDD2
I
60 61 62 63 64
VSS OSC CE CLK DI
I/O I I I
*Note 1: When INH="LOW" : Serial data transfers can be performed when the display is forcibly OFF.
1-21
KS-FX280 LC72366-9A74 (IC701) : System CPU
1. Pin layout 25 24 ~ ~ 1 80 ~ ~ 64 65 Function Crystal oscillator input port Connect to GND Data input for J-BUS information Data output for J-BUS information Clock output for J-BUS information Switching signal output for J-BUS information I/O, H:Out L:In None connection Data output for LCD driver Information clock output for LCD driver data Chip enable output for LCD driver None connection Data output for electrical volume 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 Diode matrix output port for initial establishing Diode matrix output port for initial establishing Diode matrix output port for initial establishing Non connection Diode matrix output port for initial establishing 5V power supply port (+B) Turn on all light indicator of LCD, L: All light a LED indicator FF/REW mode select signal output H:Auto seek, L: Stop Use both as IF count REQ and Seek/Stop Forced monaural output port, H:Turn on Forced monaural Non connection Non connection "H" : Turn on power Non connection Non connection
40 41 2. Pin function
Pin No. Symbol I/O I 1 XIN 2 GND I 3 J-BUS SI O 4 J-BUS SO O 5 J-BUS SCK O 6 J-BUS I/O 7 NC O 8 LCD SO O 9 LCD SCK O 10 LCD CE 11 DIMMER IN O 12 EVOL SO O 13 EVOL SCK 14 NC 15 TUNER ILLUM 16 TAPE ILLUM 17 CD ILLUM 18 DIMMER OUT 19 NC 20 OPEN 21 NC 22 NC 23 NC 24 NC 25 KS1 O 26 KS0 I 27 K3 I 28 K2 29 K1 I 30 K0 31 Vdd I 32 TEST 33 FF/REW MODE O 34 SEEK/STOP O O 35 MONO 36 RADIO/TAPE 37 BEEP LEVEL O 38 PWR-CNT 39 ACC 40 KICK
1-22
KS-FX280
LC72366-9A74(2/2)
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 MOTOR SUBMO+ SUBMOBEEP TAPE IN STANDBY REEL MODE F/R MS SD/ST DETACH NC NC J-BUS INT REMOCON FM/AM DOLBY NC MUTE MEM DET LEVELMETER S.METER KEY2 KEY1 KEY0 ACCDET SENSE AM IF COUNT FM IF COUNT NC NC Vdd AM OSC FM OSC VSS NC E0 TEST1 XOUT
I/O O O O I I I I I I I O I I O O O I I I I I I I I I I I O O
Function Main motor output, H:Transport L: Stop Sub-motor output(+), Loading direction to transport output Sub-motor output(-), Eject direction to transport output Non connection Switch for detecting to input cassette, L: Cassette in Switch for detecting standby position Switch for detecting tape end position Detecting mode position input Switch for detecting forward/reverse , H:FWD L:REV MS input port, Station detector, Stereo signal input, H:SD Front panel detect Non connection Non connection Cut in signal detecting port from J-Bus information Remocon input FM/AM mode switching signal port, H:FM L:AM Dolby NR control Non connection Mute output port, L:Mute Back-up power supply detecting port, H:input L:no input Pressure voice level voltage input for level meter. S meter voltage input Key 2 input port Key 1 input port Key 0 input port Hold port for Acc detecting, L: Hold mode Voltage sensor port Non connection FM frequency detecting Non connection Non connection 5V power supply (+B) Non connection FM limited signal input Ground port for power supply Non connection Error signal output port for PLL Test port for LSI, To connect ground 4.5MHz crystal oscillator output
1-23
KS-FX280
AN80T05 (IC901) : 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
1-24
KS-FX280
CXA2559Q (IC401) : Playback equalizer amplifier with music sensor
30 29 28 27 26 25 24 23 22
1.Pin layout
2.Blockdiagram
31
100k 7k/12k
24dB
+ -
21
20 19 18 17 16
MS ON/ OFF
1
30
32 33
300k X1 F2 + + -
T2
BIAS MUTE TAPE EQ
MS MODE
10
21
34 35
45k
30k
36
30k
FWD/RVS
15 14 13 12
37
F1
LPF
X1 T1 100k
Vcc + F3
DET
38
300k
39
7k/12k
+ -
40
24dB
11
3.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 Symbol PBTC1 PBOUT1 OUTREF1 TAPEIN1 Vcc NC LINEOUT1 NC MSLPF G2FB GI1FB MSTC MSOUT NC MUTESW TAPESW DRSW MSMODE MSSW NC LINEOUT2 DIREF GND TAPEIN2 OUTREF2 PBOUT2 PBTC2 PBFB2 PNRIN2 PBGND PBFIN2 VCT PBREF PBFIN1 PBGND PBRIN1 PBFB1 I/O O O I O O I I I I I O I O O I I I O O I I I
Function Terminal of capacity of reproduction equalizer reproduction Equalizer output terminal Output standard terminal Tape input terminal Power supply terminal Non connection Line-out output terminal 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 Detection output terminal between tunes Non connection Mute function control terminal Reproduction equalizer control terminal Head change control terminal Detection mode control terminal between tunes Detection function control terminal between tunes Non connection Line-out output terminal Resistance connection terminal for standard current setting Earth terminal Tape input terminal Output standard terminal Reproduction equalizer output terminal Terminal of capacity of reproduction equalizer Reproduction equalizer return terminal Reproduction equalizer input terminal Reproduction equalizer system earth terminal Reproduction equalizer input terminal Middle point terminal Reproduction equalizer standard terminal Reproduction equalizer input terminal Reproduction equalizer system earth terminal Reproduction equalizer input terminal Reproduction equalizer return terminal
10
1
2
3
4
5
6
7
8
9
1-25
KS-FX280
HD74HC126P (IC801) : Changer control
1.Pin arrangement 2. Pin function
1C 1A 1Y 2C 2A 2Y GND
1 2 3 4 5 6 7
14 13 12 11 10 9 8
Vcc 4C 4A 4Y 3C 3A 3Y C L H H
Input A X L H
Output Y Z L H
( TOP VIEW ) 3. Block diagram 1A 1Y 1C
2A 2Y 2C
3A 3Y 3C
4A 4Y 4C
1-26
KS-FX280 TEA6320T-X (IC161) : 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
1-27
KS-FX280
LA4743K (IC301) : Power amp
1.Block diagram
+ Vcc 1/2 Vcc 3/4 2200 F 0.022 F
6
20
+ 0.22 F
11
+
TAB
1
Protective circuit PWR GND1
IN 2 + 0.22 F
ST BY
4
+5V ST ON
Stand by Switch Mute 10K
R.F 47 F
+
10
Ripple Filter
Mute circuit
+ 0.22 F
15
+
N.C
25
PWR GND3 Protective circuit
PRE GND
IN 4 + 0.22 F Muting & ON Time Control Circuit
ON TIME C 22 F
+
16
1-28
-
14
+
+
13
+
IN 3
-
12
+
+ + -
IN 1
9 7 8 5 3
OUT 1+
OUT 1-
OUT 2+
OUT 2-
2
PWR GND2
22
3.3 F
+
Low Level Mute ON
17 19 18 21 23
OUT 3+
OUT 3-
OUT 4+
OUT 4-
PWR GND4
24
KS-FX280
2.Terminal layout
3.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 Symbol TAB GND RFOSTBY RFO+ VCC1/2 RROGND RRO+ VREF RRIN RFIN SGND LFIN LRIN ONTIME LRO+ GND LROVCC3/4 LFO+ MUTE LFO-GND NC Function 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 No connection
LA4743K
1-29
KS-FX280
KIA7810PI (IC902) : Regulator
1.Pin layout 2.Block diagram 1 INPUT
R8 R9 R13
R4
R18
Q8
Q9 Q16 R21 Q14 Q15 Q17 R12
123
Q12 Q10 R5 Q13 Q5 R15 Z1 R6 R1 Q7 Q4 R7 Q1 R10 R3 Q2 R14 Q3 R2 C1 R16 Q6
R17
R11
3 OUTPUT
R20 Q11
R19
2 GND
LB1641 (IC402) : DC motor driver
1. Pin layout 2. Pin function
Input IN1 IN2 Output OUT1 OUT2 Mode Brake CLOCKWISE COUNTER-CLOCKWISE Brake
0 1
1 2 3 4 VZ 5 IN1 6 7 8 9
10
0 0 1 1
0 1 0 0
0 0 1 0
0 1
GND OUT1 P1
IN2 VCC1 VCC2 P2
OUT2
RPM6938-SV4 (IC652) : Remote sensor
1.Block diagram
Vcc AGC AMP
I/V conversion
Vcc 22k
Comp BPF Detector
Rout
PD
fo trimming circuit
magnetic
shield
GND
1-30
KS-FX280
VICTOR COMPANY OF JAPAN, LIMITED MOBILE ELECTRONICS DIVISION PERSONAL & MOBILE NETWORK BUSINESS UNIT. 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan
200201
(No.49674)