Page 1
SERVICE MANUAL
COMPACT COMPONENT SYSTEM
MX-K3
MX-K3
Contents
RM-SMXK3U REMOTE CONTROL
1 2 3
4 5 6
7 8 9
10 +10
CD1CD2CD3CD
PROGRAM
REPEAT TAPE A/B
/RANDOM
KARAOKE
SOUND
MODE
ACTIVE
VOLUME
BASS EX.
FM MODE
COMPU PLAY
CONTROL
3-CD
STANDBY/ON
SLEEP
AUX
FM /AM
TAPE
ECHO
FADE
MUTING
COMPACT COMPONENT SYSTEM
STANDBY
PHONES
MIC MIC
STANDBY/ON
AUX
REPEAT PROGRAM RANDOM
VOL
MAXMIN
EJECT
PLAY
A
PLAY & EXCHANGE
MX-K3
CANCEL SET
/ DEMO
M
D
TUNNIG
C
/A
APE
T
M
F
REC START
CD
/STOP REC START DUBBING
CLOCK
/TIMER
COMPU PLAY CONTROL
ACTIVE BASS EXTENSION
FULL - LOGIC CONTROL CD SYNCHRO RECORDING
TAPE
A/B
CD-R/RW PLAYBACK
1 BIT
DUAL D/A
ACTIVE
CONVERTER
BASS EX.
PRESET
E
M
U
L
O
V
P
K
O
C
P
O
R
SOUND
MODE
C
C
L
I
A
S
S
DISC SKIP
CD CONTROL
1
2
3
D
D
D
C
C
C
EJECT
REC/PLAY
B
CA-MXK3SP-MXK3 SP-MXK3
Area Suffix
UJ US military
US
UT
UW
UX
UY
Brazil, Mexico, Peru
Singapore
Taiwan
Saudi Arabia
Argentina
Safety precautions
Important for laser products
Preventing static electricity
Disassembly method
Adjustment method
COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD.
1-2
1-3
1-4
1-5
1-19
Flow of functional
operation until TOC read
Maintenance of laser pickup
Replacement of laser pickup
Description of major ICs
Wiring connections
1-21
1-22
1-22
1-23
1-33
No.20994
Jun. 2001
Page 2
MX-K3
1. This design of this product contains special hardware and many circuits and components specially for safety
purposes. For continued protection, no changes should be made to the original design unless authorized in
writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Services
should be performed by qualified personnel only.
2. Alterations of the design or circuitry of the product should not be made. Any design alterations of the product
should not be made. Any design alterations or additions will void the manufacturer`s warranty and will further
relieve the manufacture of responsibility for personal injury or property damage resulting therefrom.
3. Many electrical and mechanical parts in the products have special safety-related characteristics. These
characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily
be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which
have these special safety characteristics are identified in the Parts List of Service Manual. Electrical
components having such features are identified by shading on the schematics and by ( ) on the Parts List in
the Service Manual. The use of a substitute replacement which does not have the same safety characteristics
as the recommended replacement parts shown in the Parts List of Service Manual may create shock, fire, or
other hazards.
4. The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the like to be
separated from live parts, high temperature parts, moving parts and/or sharp edges for the prevention of
electric shock and fire hazard. When service is required, the original lead routing and dress should be
observed, and it should be confirmed that they have been returned to normal, after re-assembling.
5. Leakage currnet check (Electrical shock hazard testing)
After re-assembling the product, always perform an isolation check on the exposed metal parts of the product
(antenna terminals, knobs, metal cabinet, screw heads, headphone jack, control shafts, etc.) to be sure the
product is safe to operate without danger of electrical shock.
Do not use a line isolation transformer during this check.
Plug the AC line cord directly into the AC outlet. Using a "Leakage Current Tester", measure the leakage
current from each exposed metal parts of the cabinet, particularly any exposed metal part having a return
path to the chassis, to a known good earth ground. Any leakage current must not exceed 0.5mA AC (r.m.s.).
Alternate check method
Plug the AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000 ohms per volt or more
sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by a 0.15 F AC-type capacitor
between an exposed metal part and a known good earth ground.
Measure the AC voltage across the resistor with the AC
voltmeter.
Move the resistor connection to eachexposed metal part,
particularly any exposed metal part having a return path to
the chassis, and meausre the AC voltage across the resistor.
Now, reverse the plug in the AC outlet and repeat each
measurement. Voltage measured any must not exceed 0.75 V
AC (r.m.s.). This corresponds to 0.5 mA AC (r.m.s.).
0.15 F AC TYPE
1500 10W
Good earth ground
AC VOLTMETER
(Having 1000
ohms/volts,
or more sensitivity)
Place this
probe on
each exposed
metal part.
!
1. This equipment has been designed and manufactured to meet international safety standards.
2. It is the legal responsibility of the repairer to ensure that these safety standards are maintained.
3. Repairs must be made in accordance with the relevant safety standards.
4. It is essential that safety critical components are replaced by approved parts.
5. If mains voltage selector is provided, check setting for local voltage.
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.
In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the
parts that are printed over with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the " "
mark nearby are critical for safety.
When replacing them, be sure to use the parts of the same type and rating as specified by the manufacturer.
(Except the J and C version)
1-2
Page 3
Important for laser products
MX-K3
1.CLASS 1 LASER PRODUCT
2.DANGER : Invisible laser radiation when open and inter
lock failed or defeated. Avoid direct exposure to beam.
3.CAUTION : There are no serviceable parts inside the
Laser Unit. Do not disassemble the Laser Unit. Replace
the complete Laser Unit if it malfunctions.
4.CAUTION : The compact disc player uses invisible
laserradiation and is equipped with safety switches
whichprevent emission of radiation when the drawer is
open and the safety interlocks have failed or are de
feated. It is dangerous to defeat the safety switches.
VARNING : Osynlig laserstrålning är denna del är öppnad
och spårren är urkopplad. Betrakta ej strålen.
VARO : Avattaessa ja suojalukitus ohitettaessa olet
alttiina näkymättömälle lasersäteilylle.Älä katso
säteeseen.
5.CAUTION : If safety switches malfunction, the laser is able
to function.
6.CAUTION : Use of controls, adjustments or performance of
procedures other than those specified herein may result in
hazardous radiation exposure.
CAUTION
!
Please use enough caution not to
see the beam directly or touch it
in case of an adjustment or operation
check.
ADVARSEL : Usynlig laserstråling ved åbning , når
sikkerhedsafbrydere er ude af funktion. Undgå
udsættelse for stråling.
ADVARSEL : Usynlig laserstråling ved åpning,når
sikkerhetsbryteren er avslott. unngå utsettelse
for stråling.
REPRODUCTION AND POSITION OF LABELS
WARNING LABEL
DANGER : Invisibie laser radiation
when open and interlock or
defeated.
AVOID DIRECT EXPOSURE TO
BEAM (e)
VARO : Avattaessa ja suojalukitus
ohitettaessa olet alttiina
näkymättömälle lasersäteilylle.Älä
katso säteeseen. (d)
CLASS 1
LASER PRODUCT
VARNING : Osynlig laserstrålning är
denna del är öppnad och spårren är
urkopplad. Betrakta ej strålen. (s)
ADVARSEL :Usynlig laserstråling
ved åbning , når
sikkerhedsafbrydere er ude af
funktion. Undgå udsættelse for
stråling. (f)
1-3
Page 4
MX-K3
Preventing static electricity
1. Grounding to prevent damage by static electricity
Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged,
can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.
2. About the earth processing for the destruction prevention by static electricity
In the equipment which uses optical pick-up (laser diode), optical pick-up is destroyed by the static electricity of
the work environment.
Be careful to use proper grounding in the area where repairs are being performed.
2-1 Ground the workbench
Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over
it before placing the traverse unit (optical pickup) on it.
2-2 Ground yourself
Use an anti-static wrist strap to release any static electricity built up in your body.
(caption)
Anti-static wrist strap
Conductive material
(conductive sheet) or iron plate
3. Handling the optical pickup
1. In order to maintain quality during transport and before installation, both sides of the laser diode on the
replacement optical pickup are shorted. After replacement, return the shorted parts to their original condition.
(Refer to the text.)
2. Do not use a tester to check the condition of the laser diode in the optical pickup. The tester's internal power
source can easily destroy the laser diode.
4. Handling the CD changer unit (optical pickup)
1. Do not subject the CD changer unit (optical pickup) to strong shocks, as it is a sensitive, complex unit.
2. Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific
details, refer to the replacement procedure in the text. Remove the anti-static pin when replacing the CD changer
unit. Be careful not to take too long a time when attaching it to the connector.
3. Handle the flexible cable carefully as it may break when subjected to strong force.
4. It is not possible to adjust the semi-fixed resistor that adjusts the laser power.
Do not turn it
CD changer
unit
CD changer
mechanism
assembly
Attention when traverse unit is decomposed
*Please refer to "Disassembly method" in the text for pick-up and how to
detach the CD changer mechanism.
1. Remove the CD changer unit.
2. Disconnect the harness from connector on the CD motor board.
3. Solder is put up before the card wire is removed from connector CN601
on the main board as shown in Fig.1 and Fig. 2.
(When the wire is removed without putting up solder, the CD pick-up
assembly might destroy.)
4. Please remove solder after connecting the card wire with CN601 when
you install picking up in the substrate.
1-4
Flexible cable
Fig.1
Soldering
Fig.2
Page 5
MX-K3
Disassembly method
Commence disassembly of this set by removing the main units and then proceed to the components and
assemblies inside the units.
Replacement of the fuses and the power IC 1-6
Top cover 1-7
CD changer unit 1-8
Front panel assembly 1-9
Chassis unit 1-17
CD changer unit 1-8
Removing the main board 1-10
Removing the CD changer mechanism assembly 1-11
Removing the CD pickup 1-12
Replacing the loading motor and belt of the CD changer tray 1-12
Replacing the CD tray rotor belt of CD changer, and removing the motor 1-12
Front panel assembly 1-9
Removing the cassette deck mechanism 1-13
Removing the earphone jack board 1-13
Removing the mic amp. board 1-14
Removing the control/FL board 1-14
Removing the key switch board and ACTIVE BASS EX. switch board 1-15
Removing the cassette deck main motor, and replacing the main belts 1-16
Removing the leaf switches of the cassette deck mechanism 1-16
Removing the cassette deck heads 1-17
Chassis unit 1-17
Removing the 3-pin regulator 1-17
Removing the amp. board, the voltage selector board and AC power board 1-18
1-5
Page 6
MX-K3
<Disassembly of the main blocks of this set>
Replacement of the fuses and the power IC
Fuse (F953)
1.25A 250V
Replacing the fuses (See Fig.1)
Prior to performing the following procedure, remove
the top cover.
1.
Replace the fuses inside.
[Caution] Be sure to use fuses with the specified
ratings.
Replacing the power IC (See Fig.2 to 4)
Prior to performing the following procedure, remove
the top cover.
1.
Remove the two screws "A" that attach the heat
sink cover to the rear panel.
2.
Pull the heat sink cover outward.
3.
Remove the two screws "B" from the bracket that
retains the power IC.
4.
Remove the solder fixing the power IC.
Fuse (F951)
2.0A 250V
Power trans board
Fuse (F952)
1.6A 250V
Chassis
Fig.1
Rear panel
A
Rear panel
B
Heat sink
Heat sink cover
Fig.2
Amp. board
Rear
Power IC
soldering part
Fig.3
1-6
Fig.4
Page 7
Removing the top cover
(See Fig.5 and 6)
1.
Remove the six screws "C" that retain the top cover
from the rear of the body.
2.
Remove the two screws "D" and two screws "E"
retain the top cover from the two sides of the body.
3.
Remove the top cover from the body by lifting it
toward the rear.
Top cover
MX-K3
C
CC
Fig.5
Front panel assembly
D
E
Fig.6
1-7
Page 8
MX-K3
Removing the CD changer unit
(See Fig.7 to 10)
Prior to performing the following procedures,
remove the top cover.
[Caution] Although the CD mechanism unit can be
removed without removing the CD tray
panel, it is still recommended to remove it
in order to prevent damage.
a.
From the front panel side of this set, push in the
sections marked with arrows and pull out the CD
tray toward the front.
b.
Remove the CD tray panel by pushing both of its
extremities upward in the direction of the arrows.
c.
Push the CD tray deep into the set.
1.
Disconnect the cassette head wires from the
connectors CN307 and CN308 on the main board,
which is located below the CD changer unit.
2.
Disconnect the card wires from the connectors
CN301, CN302, CN305 and CN306 on the main
board.
3.
Disconnect the parallel wires from the connectors
CN902A, CN902B and CN902C on the power amp
and supply board.
4.
From the rear of the set, remove the two screws "F"
retaining the CD changer unit, then remove the four
screws "G" retaining the ANTENNA terminal and
the AUX IN terminal.
5.
Push down and disengage the two claws "a"
holding the CD changer unit at the bottom of its
front panel and then remove the CD changer unit
(Fig. 10).
CD tray panel
Fig.7
AUX IN
terminal
G
Fig.9
1-8
F
Antenna
terminal
CD tray panel
Fig.8
CD changer
unit
Claw a
Fig.10
Page 9
Removing the front panel assembly
(See Fig.11 and 12)
Prior to performing the following procedures,
remove the top cover.
Also remove the CD changer unit.
1.
Disconnect the parallel wire and card wire from the
connectors CN1101,CN901,CN951A and CN951B
on the amp. board.
2.
Remove the two screws "H" retaining the front
panel assembly onto the bottom of the body.
3.
Remove the screw "I" retaining the cassette deck
mechanism and then remove the GND lug "b" that
comes from the amp. board.
4.
Disengage the claws "c" on both sides at the
bottom of the front panel assembly and then
remove the assembly.
MX-K3
H
Claw c
GND lug b
Fig.11
Control/FL board
Amp. board
I
Fig.12
1-9
Page 10
MX-K3
<Disassembly of units and assembly
inside this set>
Removing the main board
(See Fig.13 and 14)
Prior to performing the following procedures,
remove the top cover.
Also remove the CD changer unit.
1.
Disconnect the wires from CN602 and CN603 on
the main board, which is located on the backside of
the CD changer unit.
2.
Disconnect the card wire from connector CN604 of
the main board at the back of the CD changer unit.
3.
The three screws "J" and the screw with the
washer "K" that retain the main board should be
removed.
4.
Remove the main board by pulling it toward the
side where the CN601 is located.
5.
Using solder, short the CD pickup to connect to
short round.
[Caution]
After re-connecting the wires, be sure to
remove the shorting solder from the GND
connection.
Main board
J
CN604
CN603CN602
CN601
J
K
Fig.13
6.
Disconnect the card wire from the connector
CN601 on the main board and then remove the
main board.
Main board
CN601
Short round
Fig.14
1-10
Page 11
Removing the CD changer mechanism
assembly (See Fig.15 to 17)
Prior to performing the following procedures,
remove the top cover.
Also remove the CD changer unit.
1.
Remove the spring "d" from the front surface of the
CD changer mechanism unit.
2.
Turn the CD changer mechanism unit upside down,
and remove the spring "e" connecting the unit to
the CD changer mechanism assembly.
[Note] When re-assembling after the disassembly
work, apply bonding agent on the spring to
prevent it from slipping off.
3.
Remove the two screws with the washer "L"
retaining the CD changer mechanism assembly.
[Caution] When replacing the CD changer
mechanism assembly, be sure not to
mistake the positions of the red and blue
dampers.
MX-K3
[Note]
Spring d
CD changer
unit
CD changer
mechanism
assembly
L
Red Red
Fig.15
[Note]
Spring e
CD changer
mechanism
assembly
Fig.16
BlueBlue
Fig.17
1-11
Page 12
MX-K3
Removing the CD pickup (See Fig.18)
Prior to performing the following procedures,
remove the top cover.
Also remove the CD changer unit.
Also remove the CD changer mechanism
1.2.Widen the section "f ".
While keeping the section "f" wide open, push the
section "g" in the direction of the arrow to remove
the shaft, and then remove the CD pickup.
Replacing the loading motor and belt
of the CD changer tray (See Fig.19)
Prior to performing the following procedure,
remove the top cover.
1.
Pull out the CD changer tray.
2.
Remove the belt from the pulley.
3.
Remove the two screws "M" retaining the CD
changer tray loading motor.
[Caution] When pushing in the CD changer tray, be
sure to lower the CD changer mechanism
assembly by manually turning the UD
cam gear in the direction of the arrow.
Replacing the CD tray rotor belt of the
CD changer, and removing the motor
(See Fig.20 and 21)
Pulley
Belt
CD pickup
gf
Shaft
M
Fig.18
UD cam gear
Prior to performing the following procedures,
remove the top cover.
Also remove the CD changer unit.
1.
Remove the two screws "N" retaining the stopper
brackets on both sides of the CD changer unit.
2.
Remove the stopper brackets from both sides of
the CD changer unit.
3.
Pull out the CD tray from the CD changer unit, all
the way and then lift the tray upward to remove.
4.
Turn the CD tray upside down and remove the tray
rotor belt from the pulley.
5.
Turn the CD tray upside down and disconnect the
card wire from the connector CN605 on the CD
tray rotor motor assembly.
6.
Remove the two screws "O" retaining the CD tray
rotor motor, and then remove the CD tray rotor
motor.
CD changer
tray
Fig.19
CD tray
rotor belt
Stopper bracket
Fig.20 Fig.21
1-12
N
CN605
Pulley
O
Page 13
MX-K3
k
Removing the cassette deck mechanism
(See Fig.22)
Prior to performing the following procedure, remove
the top cover.
Also remove the CD changer unit.
Also remove the front panel assembly.
1.Remove the five screws "P" retaining the cassette
deck mechanism and then remove the wire clamp
lug "h" that comes from the back of the front panel
assembly.
Front panel
assembly
P
Wire clamp
lug "h"
P
Fig.22
Removing the earphone jack board
(See Fig.23)
Prior to performing the following procedure, remove
the top cover
Also remove the CD changer unit.
Also remove the front panel assembly.
Remove the screw with the washer, "Q" that retains
1.
the earphone jack board from the back of the front
panel assembly.
Front panel
assembly
Earphone jac
board
Q
Fig.23
1-13
Page 14
MX-K3
Removing the mic amp. board
(See Fig.24 and 25)
Prior to performing the following procedure, remove
the top cover
Also remove the CD changer unit.
Also remove the front panel assembly.
Pull out the mic level knob from the front of the
1.
front panel assembly.
Remove the screw with the washer, "R" that retains
2.
the mic amp. board.
Front panel assembly
Mic level knob
Fig.24
Front panel
assembly
Removing the control/FL board
(See Fig.26)
Prior to performing the following procedure, remove
the top cover.
Also remove the CD changer unit.
1.Remove the three screws "S" that retain the
control/FL board from the back of the front panel
assembly.
Braket
Mic amp
R
Fig.25
Front panel
assembly
S
Control/FL
board
1-14
Fig.26
Page 15
Removing the key switch board and
ACTIVE BASS EX. switch board
(See Fig.26 to 29)
Prior to performing the following procedures,
remove the top cover.
Also remove the CD changer unit.
Also remove the front panel assembly.
1.
Pull out the volume control knob from the front of
the front panel assembly.
2.
Remove the nut and washer retaining the volume
knob shaft.
3.
Remove the three screws "S" retaining the
control/FL board from the back of the front panel
assembly.
4.
Remove the control/FL board.
5.
Remove the eleven screws "T" retaining the key
switch board.
6.
Remove the two screws "U" retaining the ACTIVE
BASS EX. switch board.
MX-K3
Front panel assembly
Volume knob
Fig.27
Front panel
assembly
Nut
Volume shaft
Washer
Fig.28
U
T
ACTIVE BASS EX. switch board
Key switch
board
Fig.29
T
1-15
Page 16
MX-K3
Removing the cassette deck main
motor, and replacing the main belts
(See Fig.22, 30 and 31)
Prior to performing the following procedures,
remove the top cover.
Also remove the CD changer unit.
Also remove the front panel assembly.
1.
Remove the five screws "P" retaining the cassette
deck mechanism.
2.
Remove the cassette deck mechanism.
3.
Remove the two screws "V" retaining the main
motor from the front side of the cassette deck.
[Caution]
4.
From the backside of the cassette deck, remove
the main motor and two main belts.
After attaching the main motor, check the
orientation of the motor and the polarity of
the wires.
Cassette deck mechanism
(Front side)
Fig.30
Cassette deck mechanism
(Back side)
V
Cassette deck main motor
[Caution]
The lengths of the cassette A (playback
only) and cassette B (record/play) main
belts are different. When attaching the
main belts, use the longer belt for
cassette A.
Removing the leaf switches of the
cassette deck mechanism
(See Fig.22 and 32)
Prior to performing the following procedures,
remove the top cover.
Also remove the CD changer unit.
Also remove the front panel assembly.
1.
Remove the five screws "P" that retain the cassette
deck mechanism.
2.
Remove the cassette deck mechanism.
3.
Turn the cassette deck mechanism upside down.
4.
Remove the solder from around the leaf switches.
5.
Pull out the leaf switches from the front side of the
cassette deck mechanism.
Main belt
(For B cassette)
Main belt
(For A cassette)
Fig.31
Solder side of leaf switch
Cassette deck mechanism
(Back side)
Fig.32
1-16
Page 17
MX-K3
Removing the cassette deck heads
(See Fig.22 and 33)
Prior to performing the following procedures,
remove the top cover.
Also remove the CD changer unit.
Also remove the front panel assembly.
1.
Remove the five screws "P" that retain the cassette
deck mechanism.
2.
Remove the cassette deck mechanism and place it
so that the front side faces up.
3.
Remove the solder from the bottom side of the
head terminal and disconnect the wire.
4.
Remove the screw "W" that retains the head.
5.
Loosen the screw "X" that retains the head.
6.
Hold the head and slide it in the direction of the
arrow to remove it.
Removing the 3-pin regulator
(See Fig.2, 34 and 35)
Prior to performing the following procedures,
remove the top cover.
1.
Remove the two screws "A" connecting the heat
sink cover to the rear panel.
2.
Pull the heat sink cover foward you.
3.
Remove the screw "Y" that retains the bracket
holding the 3-pin terminal regulator.
4.
Remove the solder fixing the 3-pin regulator.
Cassette deck mechanism
(Front side)
PB Head
XW
Fig.33
Heat sink
REC/PB Head
XW
Rear panel
Y
Fig.34
Amp. board
Rear
Solder on the
3-pin regulator
Fig.35
1-17
Page 18
MX-K3
Removing the amp. board, the voltage
selector board and the AC power board
(See Fig.2, 3, 34, 36 to 39)
Prior to performing the following procedures,
remove the top cover.
Also remove the CD changer unit.
1.
Remove the two screws "A" connecting the heat
sink cover to the rear panel.
2.
Pull out the heat sink cover toward you.
3.
Remove the two screws "B" that retain the bracket
supporting the power IC.
4.
Remove the screw "Y" that retain the bracket
holding the 3-pin terminal regulator.
5.
Remove the two screws "Z" that retain the
SPEAKERS terminals.
6.
Remove the screw "AA" that retains the rear
panel, and then remove the rear panel.
7.
Remove the screw "AB" that retain the voltage
selector board.(Except UP/UY)
8.
Disconnect the parallel wires from the connectors
CN951A and CN951B on the amp. board.
9.
Remove the screw "AC" that retain the amp. board
and then remove the assembly.
Remove the solders "j" connecting the six wires.
10.
Remove the four screws "AD" that retain the AC
11.
power board and then remove the assembly.
Speaker
terminal
Z
Rear panel
Fig.36
Rear panel
Amp. board
CN951B
AB
(Except UP/UX)
Voltage
selector
AA
Amp. board
Voltage selector
board
AD
CN951A
Chassis
Fig.37
Chassis
(Top view)
AC power board
AD
Chassis AC
Fig.38
1-18
j
j
Clamp
AC power cord
Fig.39
Page 19
Adjustment method
Measurement instruments required
for adjustment
1. Low frequency oscillator,
This oscillator should have a capacity to output 0dB
to 600ohm at an oscillation frequency of 50Hz-20kHz.
2. Attenuator impedance : 600ohm
3. Electronic voltmeter
4. Frequency counter
5. Wow flutter meter
6. Test tape
VT712 : For Tape speed and wow flutter ( 3kHz)
VT703 : For Head angle(10kHz),Play back frequency
VT724 : For reference signal test(1kHz)
VT739 : For frequency response test(63Hz,1kHz,10kHz)
7. Blank tape
TAPE : AC-225, TAPE : AC-514
8. Torque gauge : For play and back tension
Forward ; TW2111A, Reverse ; TW2121A
Fast Forward and Rewind ; TW2231A
9. Test disc
: CTS-1000(12cm),GRG-1211(8cm)
10. Jitter meter
MX-K3
Radio input signal
AM modulation frequency : 400Hz
Modulation factor : 30%
FM modulation frequency : 400Hz
Frequency displacement : 22.5kHz
Frequency Range
AM 522kHz~1629kHz (at 9kHz channel space)
FM 87.5MHz~108MHz
Standard measurement positions of volume
and switch
Power : Standby (Light STANDBY Indicator)
A.BUSS switch: OFF
Sound mode : OFF
Main VOL. maximum
Travers mecha set position : Disc 1
Mic MIX VOL : MAX
ECHO : OFF
Measurement conditions
Power supply voltage
AC110/127/220/230-240V (50Hz/60Hz) : US/UT/UX
AC220V (60Hz) : UY
Measurement
output terminal : Speaker out
: TP101(Measuring for TUNER/DECK/CD)
: Dummy load 6ohm
Precautions for measurement
1. Apply 30pF and 33kohm to the IF sweeper output
side and 0.082 F and 100kohm in series to
the sweeper input side.
2. The IF sweeper output level should be made as
low as possible within the adjustable range.
3. Since the IF sweeper is a fixed device, there is
no need to adjust this sweeper.
4. Since a ceramic oscillator is used, there is no need
to perform any MPX adjustment.
5. Since a fixed coil is used, there is no need to adjust
the FM tracking.
6. The input and output earth systems are separated.
In case of simultaneously measuring the voltage
in both of the input and output systems with an
electronic voltmeter for two channels, therefore,
the earth should be connected particularly.
7. In the case of BTL connection amplifier, the minus
terminal of speaker is not for earthing. Therefore,
be sure not to connect any other earth terminal
to this terminal. This system is of an OTL system.
1-19
Page 20
MX-K3
Arrangement of adjusting positions
Cassette deck mechanism
(Front side)
PB Head
(Deck-A)
Head azimuth screw
(Forward side)
Head screw Head screw
Head azimuth screw
Tape recorder section
Items
Cassette Head
Azimuth Alignments
Measurement
conditions
Test tape
: VT703 (10kHz)
Measurement output
terminal
: Left and Right
speaker output
(6-ohm loaded)
or
Headphone Output
(32-ohm loaded)
(Forward side)
1. Playback the test tape VT703 (10KHz) or equivalent.
2. Adjust the head azimuth screw to obtain maximum
output and both output of L / R is in 3dB.
3. Put on the screw lock paint after alignments.
REC/PB Head
(Deck-B)
Measurement method
Antenna coil
CN308
8-Pin
L301
FM VT voltage
measurement point
R6
R3
L2
T1
AM VT voltage
measurement point
Main board Ass'y
OSC coil
Standard
values
Maximum output
Adjusting
positions
Head azimuth
screw
Adjust the head
azimuth screw only
when the head has
been changed.
Recording Bias
Frequency Alignment
Tuner section
Items
AM Tracking
Alignments
AM IFT Alignments
Recording tape
: TYPE AC-514
Measurement output
terminal
: Erase head terminal
(CN308 8-Pin)
Measurement
conditions
Input signal
: 530kHz
Measurement point
: Resistor R3 (AM)
Resistor R6 (FM)
Input signal
: 603kHz
Input signal
: 531kHz
1. Insert the recording tape in deck-B.
2. Starting the recording.
3. Adjust the oscillation frequency to 80KHz+/-3KHz by
core of Oscillation coil of L301.
Measurement method
OSC coil adjustment
1.Set the Signal Generator signal to 530KHz the feed to
Loop Antenna.
2.Receiving the signal and the adjust the OSC coil (L2)
obtain the V.T is 1.40V +/-0.05V.
Antenna coil check or adjustment
1.Change the receiving frequency to 603KHz.
2.Adjust the Antenna coil ( L2 ) obtain maximum sensitivity.
(Adjust the SSG output to out of AGC range.)
1. Set the receiving frequency to 531KHz.
2. Feed the 450KHz signal to AM IF input.
3.Adjust the IFT Block T1 obtain to maximum output.
(Adjust the SSG output to out of AGC range.)
80kHz+/-3kHz
Standard
values
V. T
: 1.40V+/-0.05V
Maximum
sensitivity
Maximum output
Bias coil: L301
Use the HighImpedance Probe for
Frequency counter
input.
Adjusting
positions
OSC/Antenna coil
: L2
Adjust the OSC coil
only when the AM coil
block has been
changed.
IFT (T1)
Adjust the IFT only
when the IFT block has
been changed.
Note: The adjustment of CD section is not required.
1-20
Page 21
Flow of functional operation until TOC read
Power ON
Play Key
Slider turns REST
SW ON.
Automatic tuning
of TE offset
Confirm that the voltage at the pin5
of CN602 is "H"\"L"\"H".
MX-K3
Check Point
Tracking error waveform at TOC reading
Approx.3sec
Tracking
servo
off states
Automatic measurement
of TE amplitude and
automatic tuning of
TE balance
VREF
pin 20 of
IC611(TE)
Approx
1.8V
Disc states
to rotate
Tracking
servo
on states
Disc to be
braked to stop
TOC reading
finishes
500mv/div
2ms/div
Fig.1
Laser ON
Detection of disc
Automatic tuning of
Focus offset
Automatic measurement of
Focus S-curve amplitude
Disc is rotated
Focus servo ON
(Tracking servo ON)
Automatic measurement of
Tracking error amplitude
Automatic tuning of
Tracking error balance
Check that the voltage at the
pin40 of IC601 is + 5V?
Confirm that the Focus error
S-cuve signal at the pin32 of
IC601 is approx.2Vp-p
Confirm that the signal from
pin24 IC601 is 0V as a
accelerated pulse during
approx.400ms.
Confirm the waveform of
the Tracking error signal.
at the pin 20 of IC611 (R643)
(See fig-1)
Automatic tuning of
Focus error balance
Automatic tuning of
Focus error gain
Automatic tuning of
Tracking error gain
TOC reading
Play a disc
Confirm the eys-pattern
at the lead of TP3
1-21
Page 22
MX-K3
Maintenance of laser pickup
(1) Cleaning the pick up lens
Before you replace the pick up, please try to
clean the lens with a alcohol soaked cotton
swab.
(2) Life of the laser diode
When the life of the laser diode has expired,
the following symptoms will appear.
1. The level of RF output (EFM output:ampli
tude of eye pattern) will below.
Is the level of
RFOUT under
1.25V 0.22Vp-p?
YES
O.K
NO
Replace it.
Replacement of laser pickup
Turn off the power switch and,disconnect the
power cord from the AC OUTLET.
Replace the pickup with a normal one.(Refer
to "Pickup Removal" on the previous page)
Plug the power cord in,and turn the power on.
At this time,check that the laser emits for
about 3seconds and the objective lens moves
up and down.
Note: Do not observe the laser beam directly.
Play a disc.
Check the eye-pattern at TP3.
Finish.
(3) Semi-fixed resistor on the APC PC board
The semi-fixed resistor on the APC printed circuit board which is
attached to the pickup is used to adjust the laser power.Since this adjustment should be performed to match the
characteristics of the whole optical block, do not touch the semi-fixed resistor.
If the laser power is lower than the specified value,the laser diode is almost worn out, and the laser pickup should
be replaced.
If the semi-fixed resistor would be adjusted when the pickup operates normally,the laser pickup may be damaged
due to excessive current.
1-22
Page 23
Description of major ICs
AN22000A (IC611) : CD-DA Head Amp.
1. Terminal layout
2. Pin function
MX-K3
132
16 17
3. Block diagram
624754 8
RFOUT
RF_EQ
RFIN
AGC
Pin
Symbol
No.
1 PD I APC Amp. input terminal
2 LD O APC Amp. output terminal
3 VCC - Power supply terminal
4 RFN I RF adder Amp. inverting input
5 RFOUT O RF adder Amp. output terminal
6 RFIN I AGC input terminal
7 CAGC I Input terminal for AGC loop
8 ARF O AGC output terminal
9 CBA I Capacitor connecting terminal
10 3TOUT O 3 TENV output terminal
11 CBOO I Capacitor connecting terminal
12 BDO O BDO output terminal
13 COFTR I Capacitor connecting terminal
14 OFTR O OFTR output terminal
11 12
BDO
I/O
terminal
filter capacitor
for HPF-Amp.
for envelope detection on the
darkness side
for envelope detection on the
light side
13 14
OFTR
9
Function
Pin
Symbol
No.
15 NRFDET O NRFDET output terminal
16 GND - Ground
17 VREF O VREF output terminal
18 VDET O VDET output terminal
19 TEBPF I VDET output terminal
20 TEOUT O TE Amp. output terminal
21 TEN I TE Amp. inverting input
22 FEN I FE Amp. inverting input
23 FEOUT O FE Amp. output terminal
24 GCTL O GCTL & APC terminal
25 FBAL O FBAL control terminal
26 TBAL O TBAL control terminal
27 E I Tracking signal input terminal 1
28 F I Tracking signal input terminal 2
29 D I Focus signal input terminal 4
30 B I Focus signal input terminal 3
31 C I Focus signal input terminal 2
32 A I Focus signal input terminal 1
I/O
terminal
terminal
Function
32
31
30
29
27
28
NRFDET
AMP
AMP
AMP
AMP17GCA BCA
+
-
GCA BCA
GCA BCA
GCA BCA
SUBT
SUBT
3TENV
+
+
VDET
+
10
15
22
23
21
20
19
18
2
LD
GCTL26TBAL
FBAL
25 16 3
PD
1
1-23
Page 24
MX-K3
BA15218 (IC102) : Dual low noise operational amp.
1. Terminal layout
OUT1
- IN1
+-
+IN1
VEE
Vcc
OUT2
- IN2
-+
+IN2
BA5936S (IC621) : 6 channel BTL driver
1. Block diagram
32
31
30
29
x2
x2
D
D
x3/828x3/8
LEVEL SHIFT
LEVEL SHIFT
LEVEL SHIFT
D
D DDDD
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
27 26 25 24 23 22 21
MUTE
T. S. D
13.3k
-+
BIAS
100
BIAS
-+
13.3k
100
DETECTION
OF REG-OUT
Vcc Vcc
CURRENT
BIAS
Vcc 100
13.3k
100
+-
13.3k
10k
+-
10k
BIAS
20
BIAS
D
+-
LEVEL SHIFT
LEVEL SHIFT
x3/8x3/8
19
D
18 17
D D
LEVEL SHIFT
x2x2
2. Pin function
Pin
No.
Symbol
I/O
1 OUT1- O CH1 negative output
2 OUT1+ O CH1 positive output
3 OUT2- O CH2 negative output
4 OUT2+ O CH2 positive output
5 IN2 I CH2 input
6 IN1 I CH1 input
7 VCC - Power supply terminal
8 VCC - Power supply terminal
9 REG-I I Regulator current detection terminal
10 REG-B O
Connect to base terminal of external transistor
11 REG-OUT O Constant voltage output (Connect to
collector terminal of external transistor)
12 IN3-R I CH3 reverse input
13 IN3-F I CH3 forward input
14 OUT3+ O CH3 positive output
15 OUT3- O CH3 negative output
16 GND - Ground
Function
1-24
Pin
No.
Symbol
I/O
Function
17 OUT4- O CH4 negative output
18 OUT4+ O CH4 positive output
19 OUT5- O CH5 negative output
20 OUT5+ O CH5 positive output
21 IN5 I CH5 input
22 IN4 I CH4 input
23 VCC - Power supply terminal
24 BIAS IN I Bias input terminal
25 GND - Ground
26 GND - Ground
27 MUTE IN I Mute input terminal
28 IN6-R I CH6 reverse input
29 IN6-F I CH6 forward input
30 OUT6+ O CH6 positive output
31 OUT6- O CH6 negative output
32 GND - Ground
Page 25
LA1823 (IC1) : 1chip AM/FM, MPX tuner system
1. Block diagram
MX-K3
24
FM
RF
AM
RF
1 2 4 5 10 11 126 7 8 93
23
GND2
REG VCC1 GND1
22
AM
MIX
AM
OSC
21
VCC2
OSC
BUFFER
FM
OSC
FM
MIX
2. Pin function
Pin
No.
Symbol
I/O
1 AM_RFIN I AMRF signal input
2 REG. 3 AM_OSC - AM local oscillation circuit
4 VCC_1 - Power supply terminal
FM_MIXOUT
5
O Output terminal for FM mixer
6 GND_1 - Ground
IF_BUFFER
7
O IF buffer output
8 ST_IND O Stereo indicator output
AM_MIXOUT
9
O Output terminal for AM mixer
10 FM_IF IN I Input of FMIF signal
11 AM_IF IN I Input of AMIF signal
12 AGC I AGC voltage input terminal
Function
20
MUTE
IF
BUFFER
ST SW
Pin
No.
17 16
DECODER
VCO FF FF
TRIG
STSD
Symbol
15
PHASE
COMP
FM
S-METERAMDET
FM
IF
I/O
14
PILOT
DET
FF
AM
IF
1319 18
FM
DET
AGC
Function
13 FM_DET O FM detection signal output
ST/MON_SW
14
AM/FM_SW
15
I Stereo/Monaural switching signal input
I AM/FM switching signal input
16 L_OUT O Output L-channel
17 R_OUT O Output R-channel
18 MPX_IN I Multiplex signal input
19 DET_OUT O AM/FM detection output
20 FM_OSC - FM local oscillation circuit
21 VCC_2 - Power supply terminal
22
FM_RFOUT
O Output of FMRF signal
23 GND_2 - Ground
24 FM_RFIN I Input of FMRF signal
1-25
Page 26
MX-K3
LC72136 (IC2) : PLL Frequency synthesizer
1.Terminal layout
1
CLOCK
VCOSTOP
AM/FM
MW
SDIN
2. Block diagram
XTI
FM
CE
DI
DO
LW
2
3
4
5
6
7
8
9
10
11
22
21
20
19
18
17
16
15
14
13
12
XT
GND
LPFI
LPFO
PD
VCC
FMIN
AMIN
NC
IFCNT
IFIN
1
22
16
15
3
4
5
6
17
21
1/2
C
2
B
I/F
Powe r
on
Reset
Reference
Driver
Swallow Counter
Swallow Counter
1/16,1/17 4bit
1/16,1/17 4bit
12bit
Programmable
DriverS
Data Shift Register & Latch
7821113
3. Pin function
Pin
No.
10
11
1
2
3
4
5
6
7
8
9
Symbol
XTI
FM
CE
DI
CLOCK
DO
VCOSTOP
AM/FM
LW
MW
SDIN
Function
I/O
X'tal oscillator connect (75KHz)
I
LOW:FM mode
O
When data output/input for 4pin(input) and
I
6pin(output): H
Input for receive the serial data from
I
controller
Sync signal input use
I
Data output for Controller
O
Output port
"Low": MW mode
O
Open state after the power on reset
O
Input/output port
O
Input/output port
O
Data input/output
I/O
1-26
Phase
Detector
Charge Pump
Unlock
Detector
Universal
Counter
Pin
No.
12
13
14
15
16
17
18
19
20
21
22
Symbol
IFIN
IFCNT
NC
AMIN
FMIN
VCC
PD
LPFO
LPFI
GND
XT
18
19
20
12
I/O
Function
IF counter signal input
I
IF signal output
O
Not use
-
AM Local OSC signal output
I
FM Local OSC signal input
I
Power supply(VDD=4.5 5.5V)
When power ON:Reset circuit move
PLL charge pump output(H: Local OSC
O
frequency Height than Reference frequency.
L: Low Agreement: Height impedance)
Output for active lowpassfilter of PLL
O
Input for active lowpassfilter of PLL
I
Connected to GND
X'tal oscillator(75KHz)
I
Page 27
TA8189 (IC401) : REC/PB amp.
1. Terminal layout 2. Block diagram
MX-K3
NF1
EQ1
GND
1
24
23
22
21
20
19
18
17
16
15
14
13
CH2_A
CH2_B
NF2
EQ2
PREOUT2
A/B_SW
VCC
CG
REC_OUT2
REC_NF2
REC_IN2
ALC
23CH2_B
24CH2_A
1CH1_A
2CH1_B
2
3
4
5
6
7
8
9
10
11
12
CH1_A
CH1_B
PREOUT1
MIX_OUT
GND1
EQSW
REC_OUT1
REC_NF1
REC_IN1
3. Pin function
Pin
No.
Symbol
I/O
1 CH1_A I Input for playback amp. (Ch1): A cassette
(PB)
2 CH1_B I Input for playback amp. (Ch1): B cassette
(REC/PB)
3 NF1 I NF terminal for playback amp.
4 EQ1 O Metal output for playback amp.
5 PREOUT1 O Output terminal for playback amp.
6 MIX_OUT O Mixing output
7 GND1 - Ground
8 EQSW I Metal/Normal mode select switch
REC_OUT1
9
O Output for recording amp.
10 REC_NF1 I NF terminal for recording amp.
11 REC_IN1 I Input for recording amp.
12 GND1 - Ground terminal
Function
NF2
22
3 54 6 7 8
NF1
Ch2
+
+
Ch1
-
Pin
No.
EQ2
EQ1
Symbol
PREOUT2
2021 19
A/B
PREOUT1
A/B_SW
ref1
V
MIX_OUT
I/O
18
I
VCC
ref
GND1
13 ALC I ALC filter terminal
14 REC_IN2 I Input for recording amp.
15 REC_NF2 I NF terminal for recording amp.
16
REC_OUT2
O Output for recording amp.
17 CG O Charge detection terminal
18 VCC - Power supply terminal
19 A/B_SW I REC amp. Select switch (A cassette/B
cassette)
20 PREOUT2 O Output terminal for playback amp.
21 EQ2 O Metal output for playback amp.
22 NF2 I NF terminal for playback amp.
23 CH2_B I Input for playback amp. (Ch2): B cassette
(REC/PB)
24 CH2_A I Input for playback amp. (Ch2): A cassette
(PB)
M/N
CG
17
ref2
V
EQSW
REC_OUT2
16
9
REC_OUT1
-
Ch2
+
+
Ch1
-
Function
REC_NF2
15
14 REC_IN2
13 ALC
ALC
12 GND
11 REC_IN1
10
REC_NF1
1-27
Page 28
MX-K3
TC74HC4094 (IC402) : 8-bit shift and store resister
1. Terminal layout
ST
CK
Q1
Q2
Q3
Q4
GND
1
2
SI
3
4
5
6
7
8
16
V
CC
OE
15
Q5
14
Q6
13
Q7
12
Q8
11
Q'S
10
QS
9
2. Block diagram
2
SI D Q
F/F
ØØ
QD
F/F
ØØ
DQ
F/F
DQ
F/F
DQ
F/F
DQ
F/F
Ø
Ø
DQ
F/F
9
10
DQ
F/F
Q
S
Q'
S
CK
OE
Ø Ø
3
1
ST
15
Q
D
ØS
ØS
LATCH
ØS ØS
4
Q1
Ø Ø
LATCH
ØS ØS
Q
D
Q
5
Q2
Ø Ø
LATCH
ØS ØS
Q
D
Q
6
Q3
Ø Ø
LATCH
ØS ØS
Q
D
Q
7
Q4
Ø Ø
LATCH
ØS ØS
Q
D
Q
14
Q5
Ø Ø
LATCH
ØS ØS
Q
D
Q
13
Q6
Ø Ø
LATCH
ØS ØS
Q
D
Q
12
Q7
Ø
Ø
LATCH
ØS ØS
Q
Ø
Ø
D
Q
11
Q8
1-28
Page 29
TDA7440D (IC101) : Audio processor
1. Terminal layout
MX-K3
2. Block diagram
4
LIN1
5
LIN2
6
LIN3
7
LIN4
3
RIN1
2
RIN2
1
RIN3
28
RIN4
RIN3
RIN2
RIN1
LIN1
LIN2 VS
LIN3
LIN4
MUXO-L
IN(L)
MUXO-R
IN(R)
BIN(R)
BOUT(R)
BIN(L)
100K
100K
100K
100K
100K
100K
100K
100K
1
2
3
4
5
6
7
8
9
10
11
12
13
14
G
0/30dB
2dB STEP
G
INPUT MULTIPLEXER
+ GAIN
MUXO-L IN(L)
MUXO-R IN(R)
28
RIN4
LOUT
27
26
ROUT
25
AGND
24
CREF23
SDA
22
SCL
21
DGND
20
TRE(R)
19
18
TRE(L)
17
N.C.
16
N.C.
15
BOUT(L)
BASS
BASS
R
R
B
B
BOUT(L)
BOUT(R)BIN(R)
SPKR ATT
LEFT
SPKR ATT
RIGHT
V
REF
SUPPLY
CREF
TRE(L)
8 9 18 14 15
VOLUME
VOLUME
10 11 19 12 13 23
TREBLE
2
CBUS DECODER + LATCHES
I
TREBLE
TRE(R)
BIN(L)
27
LOUT
21
SCL
22
SDA
20
DGND
26
ROUT
24
VS
25
AGND
1-29
Page 30
MX-K3
BA3837 (IC301) : MIC Mixer
1.Block diagram
C
16
B
15
14
A
ROUT
13
LP
12
LP
11
LP
10
RIN
9
1
VCC
2.Pin function
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
LOGIC
+
-
2
MIC
Symbol
VCC
MIC
LOUT
FK
TK
LIN
BIAS
GND
RIN
LP
LP
LP
ROUT
A
B
C
-
+
3
LOUT
-
SW2 SW1
4
FK
I/O
Power supply
Microphone mixing input
I
O
O
O
O
O
Channel L output
Non connect
Non connect
Channel L input
I
Signal bias
I
Connect to GND
Channel R input
I
Connects to LPF time constant element
Connects to LPF time constant element
LPF outpout
Channel R output
Mode select input A
I
Mode select input B
I
Mode select input C
I
-
+
+
-
+
R
L-R
L+R
-
+
+
L
+
-
TK
5
6
LIN
7
BIAS
8
GND
Description
1-30
Page 31
BU9253FS (IC851) : KARAOKE echo
1.Terminal layout & block diagram
1
GND
ECHO VR
BIAS
DAINO
2
3
4
OSC
COUNTER
16
15
14
13
MX-K3
CR
MUTE
VCC
ADINTI
DAINTI
DALPFI
DALPFO
MIXO
2.Pin function
Pin No. Symbol
1
2
ECHO VR
3
4
5
6
7
DALPFO
8
9
10
11
ADLPFO
12
13
14
15
16
5
6
- +
7
8
GND
BIAS
DINTO
DINTI
DALPFI
MIXO
MIXI
ADLPFI
ADINTO
ADINTI
VCC
MUTE
CR
D/A
MIX
SRAM
I/O
I
I
O
I
O
O
I
I
O
O
I
-
I
-
A/D
12
ADINTO
11
ADLPFO
- +
10
ADLPFI
9
MIXI
Description
Connect GND
Echo level control
Analog part DC bias
DA side integrator output
DA side integrator intput
DA side LPF input
DA side LPF output
Mix AMP output for original tone& echo tone
Mix AMP input pin for original tone
AD side LPF input
AD side LPF output
AD side integrator output
AD side integrator input
Power supply
Mute control signal input
CR pin for oscillator
1-31
Page 32
MX-K3
MN662748RPM (IC601) : Digital servo & digital signal processor
1. Terminal layout
80~61
1
60
20
41
21~40
2. Pin function
Pin
No
10 SENSE
11 FLOCK
12 TLOCK
13 BLKCK
14 SQCK
15 SUBQ
16 DMUTE
17 STAT
18 RST
19 SMCK
20 PMCK
21 TRV
22 TVD
23 PC
24 ECM
25 ECS
26 KICK
27 TRD
28 FOD
29 VREF
30 FBAL
31 TBAL
32 FE
33 TE
34 RFENV
35 VDET
36 OFT
37 TRCRS
38 /RFDET
39 BDO
40 LDON
Symbol Function
1 BCLK
2 LRCK
3 SRDATA
4 DVDDI
5 DVSSI
6TX
7 MCLK
8 M D ATA
9 MLD
I/O I/O
-
-
-
-
-
I
I
I
-
-
-
O
I
O
I
O
I
-
-
O
O
-
O
O
O
O
O
I
O
O
I
I
I
I
I
I
I
I
O
Not use
Not use
Not use
Power supply for digital circuit
GND for digital circuit
Not use
Micro computer command
clock signal input
Micro computer command
data input
Micro computer command
load signal input (L: Load)
Not use, connect to TP7
Not use, connect to TP6
Not use, connect to TP5
Sub code block clock
signal output
External clock input for sub
code Q register input
Sub code Q data output
Muting input (H: Mute)
Status signal input
Reset signal input (L: Reset)
Not use
Not use, connect to TP8
Traverse enforced output
Traverse drive output
Not used
Spindle motor drive signal
(Enforced mode output)
Spindle motor drive signal
(Servo error signal output)
Kick pulse output
Tracking drive output
Focus drive output
Reference voltage
for D/A output block
Focus balance adjust
signal output
Tracking balance adjust
signal output
Focus error signal input
(Analog input)
Tracking error signal input
(Analog input)
RF envelope signal input
(Analog input)
Vibration detect signal
input (H:Detect)
Off track signal input
(H:Off track)
Track cross signal input
RF detect signal input
(L:Detect)
Drop out signal input
(H:Drop out)
Laser on signal output
(H:ON)
1-32
Pin
No
41 PLLF2
42 TOFS
43 WVEL
44 ARF
45 IREF
46 DRF
47 DSLF
48 PLLF
49 VCOF
50 AVDD2
51 AVSS2
52 EFM
53 PCK
54 VCOF2
55 SUBC
56 SBCK
57 VSS
58 X1
59 X2
60 VDD
61 BYTCK/TRVSTP
62 CLDCK
63 FCLK
64 IPFLAG
65 FLAG
66 CLVS
67 CRC
68 DEMPH
69 RESY
70 IOSEL
71 /TEST
72 AVDD1
73 OUTL
74 AVSS1
75 OUTR
76 RSEL
77 CSEL
78 PSEL
79 MSEL
80 SSEL
Symbol Function
-
Not use
Not use
Not use
RF signal input
I
Reference current input
I
Bias pin for DSL
I
Loop filter pin for DSL
I/O
Loop filter pin for PLL
I/O
Loop filter pin for VCO
I/O
Power supply for analog
circuit
GND for analog circuit
Not use, connect to TP12
Clock output for PLL
O
Loop filter pin for Digital
I/O
servo VCO
Not use
Not use
GND for crystal oscillation
circuit
Input for crystal oscillation
I
circuit (f=16.9344MHz)
Output for crystal oscillation
O
circuit (f=16.9344MHz)
Power supply for crystal
oscillation circuit
Not use
Sub code frame clock
O
signal output
Not used
Interpolation flag signal
O
output, Connect to TP11
Flag signal output,
O
Connect to TP10
Not use
Not use
De-emphasis detect signal
O
output, Connect to TP9
Not use
Mode select pin, Connect
I
to DVDD1 (H fix)
Test pin, Connect to
I
DVDD1 (H fix)
Power supply for analog
circuit
L-channel audio output
O
GND for analog circuit
R-channel audio output
O
RF signal polarity setting pin,
I
Connect to DVDD1 (H fix)
Oscillation frequency setting
I
pin, Connect to GND (L fix)
IOSEL=H, Test pin,
I
Connect to GND (L fix)
IOSEL=H, SMCK output,
I
Frequency select pin
IOSEL=H, SMCK output,
I
SUBQ output mode select pin
Page 33
Wiring connections
MX-K3
Tray SW board Ass'y
1
W603
1
Pick up SW board Ass'y
9/2
9/699/0
3-5311-027-01-07
Key switch board Ass'y
1
3-5310-020-02-07
1
FW701 FW701
FL TUBE
1
Disc count board Ass'y
Parallel wire
W606
3-5303-018-01-07
W606
1
9/4
Active bass EX. Switch board Ass'y
1
1
FW702-2
CN701
1
1
CN703
1
CN702
W607
Turn table motor board Ass'y
3-5302-012-02-07
+
9
9/2
3-5400-593-01-00
FW702-1
3-5321-018-01-07
3-5302-010-01-07
Parallel wire
94002
Card wire
3-5320-018-01-07
1
CN605
1
W608
W607
1
1
8
Tray motor
Table pos board Ass'y
9/299/6
3-5400-538-01-00
8
W608
9/4
CN603
CN305
CN301
1
CN302
1
CN308
0
9
Turn Table motor
3-5305-030-01-07
1
1
9
9/0
9/2
1
CN604
1
CN307
L301
902
2
3-5400-595-01-00
3-5311-019-01-07
Card wire
1
CN303
3-5313-017-01-07
CN306
1
Card wire
+
-
1
Amp. board Ass'y
4
6
1
CN602
1
3-5400-594-01-00
CN902B
CN902A
3-5304-037-01-07
T1
1
-
+
CN902C
Main board Ass'y
1
1
CN901
CN101
1
FW1051
1
CN601
L2
IC304
Parallel wire
CN951B
POWER IC
A
2 4 9 2 0
9
1
GND
CASS.
1
CN951A
board Ass'y
Head phone
3-5400-569-01-00
Card wire
Spindle motor
0
1
3-5309-019-01-07
A
For US/UX/UT
()
Voltage selector
board Ass'y
6
4
CD Pick up UNIT
1
1
FW951
4326
Feed motor
10
CD
Pick up
3-5315-010-01-07
1
FW952
TRANS
TB902
Mic amp.
TB901
board Ass'y
AC power board Ass'y
6
1
AC
INPUT
Control/FL board Ass'y
Card wire
main motor
Cassette deck
Cass board Ass'y
Cassette Mechanism
1
0 29
P.B. HEAD bottom sideA REC/P.B. HEAD bottom sideB
1 Brown
2 Red
3 Orange
4 Yellow
5 Green
6 Blue
7 Violet
8Gray
9 White
0 Black
Color codes are shown below.
1-33
Page 34
MX-K3
VICTOR COMPANY OF JAPAN, LIMITED
AUDIO & COMMUNICATION BUSINESS DIVISION
PERSONAL & MOBILE NETWORK B.U. 10-1,1Chome,Ohwatari-machi,maebashi-city,371-8543,Japan
No.20994
200106(S)
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