JVC MX-K30R User manual
Flow of functional
operation until TOC read
Maintenance of laser pickup
Replacement of laser pickup
Description of major ICs
Safety precautions
Important for laser products
Preventin static electricity
Disassembly method
Adjustment method
Contents
1- 2
1- 3
1- 4
1- 5
1-19
1-21
1-22
1-22
1-23
No.21138
Dec.2002
MX-K10R/K30R/K15R
SERVICE MANUAL
COMPACT COMPONENT SYSTEM
MX-K10R/K30R/K15R
COPYRIGHT © 2002VICTOR COMPANY OF JAPAN, LTD.
Are Suffix
E .................. Continetal Europe
EN ................. Northern Europe
B .................. U.K.
EV ................. E. Europe/Russia
CD-R/RWPLAYBACK
3-CD
PLAY& EXCHANGE
ACTIVE
BASSEX.
EJECT EJECT
REC / PLAY
B
CD SYNCHRO R ECORDING
PLAY
A
FULL - LOGI C CONT ROL
AUX CD TAPE
FM
/ A M
CD
3
CD
2
CD
1
COMPACT COMPONENT SYSTEM
MX-K30R
1BIT
DUAL D/A
CONVERTER
PROGRAM
SOUND
MODE
REPEAT
PANDOM
PRESET
TUNING
ST
CANCEL
PHONES
RECSTART
/STOP CD
REC START DUBBING
SET
ANDBY/ON
ECO
STANDBY
/DEMO
V
O
L
U
M
E
DISCSKIP
R
O
C
K
I
C
L
A
S
S
C
P
O
P
CLOCK
/TIMER TAPE
A / B
SELECT
PTY
/
EON
DISPLAYMODE
FMMODE
FM /AM
AUX
SLEEP
STANDBY/ON
CD
1
CD
2
CD
3
SOUND
SELECT PTY/EON MODE
DISPLAY
MODE
ACTIVE
BASS EX. FADE
MUTING
VOLUME
PROGRAM
/RANDOM
REPEAT
TAPE
A/B
TAPE
CD
BASS-REFLEX BASS-REFLEX
CD-R/RWPLAYBACK
3-CD
PLAY& EXCHANGE
ACTIVE
BASS EX.
EJECT EJECT
REC / PLAY
B
CDSYNCHRO RECORDING
PLAY
A
FULL -L OGI C C ONT ROL
AUX CD TAPE
FM
/ A M
CD
3
CD
2
CD
1
COMPACT COMPONENT SYSTEM
MX-K15R
1BIT
DUAL D/A
CONVERTER
PROGRAM
SOUND
MODE
REPEAT
PANDOM
PRESET
TUNING
ST
CANCEL
PHONES
RECSTART
/STOP CD
REC START DUBBING
SET
ANDBY/ON
ECO
STANDBY
/DEMO
V
O
L
U
M
E
DISCSKIP
R
O
C
K
I
C
L
A
S
S
C
P
O
P
CLOCK
/TIMER TAPE
A / B
SELECT
PTY
/
EON
DISPLAYMODE
FMMODE
FM /AM
AUX
SLEEP
STANDBY/ON
CD
1
CD
2
CD
3
SOUND
SELECT PTY/EON MODE
DISPLAY
MODE
ACTIVE
BASSEX. FADE
MUTING
VOLUME
PROGRAM
/RANDOM
REPEAT
TAPE
A/B
TAPE
CD
BASS-REFLEX BASS-REFLEX
CD-R/RWPLAYBACK
3-CD
PLAY& EXCHANGE
ACTIVE
BASSEX.
EJECT EJECT
REC/ PLAY
B
CDSYNCHRO RECORDING
PLAY
A
FULL - LOGI C CONT ROL
AUX CD TAPE
FM
/ A M
CD
3
CD
2
CD
1
COMPACT COMPONENT SYSTEM
MX-K10R
1BIT
DUAL D/A
CONVERTER
PROGRAM
SOUND
MODE
REPEAT
PANDOM
PRESET
TUNING
ST
CANCEL
PHONES
RECSTART
/STOP CD
REC START DUBBING
SET
ANDBY/ON
ECO
STANDBY
/DEMO
V
O
L
U
M
E
DISCSKIP
R
O
C
K
I
C
L
A
S
S
C
P
O
P
CLOCK
/TIMER TAPE
A / B
SELECT
PTY
/
EON
DISPLAYMODE
FMMODE
FM /AM
AUX
SLEEP
STANDBY/ON
CD
1
CD
2
CD
3
SOUND
SELECT PTY/EON MODE
DISPLAY
MODE
ACTIVE
BASSEX. FADE
MUTING
VOLUME
PROGRAM
/RANDOM
REPEAT
TAPE
A/B
TAPE
CD
SP-MXK10 CA-MXK10R SP-MXK10 SP-MXK15 CA-MXK15R SP-MXK15
SP-MXK30 CA-MXK30R SP-MXK30
MX-K30R
MX-K10R
E .................. Continetal Europe
EN ................. Northern Europe
EV ................. E. Europe/Russia
MX-K15R
EV ................. E. Europe/Russia
1-2
Safety Precautions
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)
Warning
1.Thisequipment hasbeendesignedandmanufacturedtomeetinternationalsafetystandards.
2.It isthe legalresponsibility ofthe repairerto ensure thatthese safetystandards aremaintained.
3.Repairs must bemade in accordance withthe relevantsafety standards.
4.It is essential that safety critical components are replacedby approved parts.
5.If mainsvoltage selector is provided, check settingfor localvoltage.
!CAUTION
!
1. This design of this product contains special hardware and many circuits and components specially or
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.
l 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 0.5mAAC (r.m.s.)
l 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. Con-
nect 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 each exposed
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 andrepeat 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.).
!
Burrs formed during molding may be
left over on some parts of the
chassis. Therefore, pay attention to
such burrs in the case of preforming
repair of this system.
1-3
Important for laser products
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
laser radiation and is equipped with safety switches
which prevent emission of radiation when the drawer
is open and the safety interlocks have failed or are
defeated. It is dangerous to defeat the safety
switches.
5.CAUTION : If safety switches malfunction, the laser
is able to function.
6.CAUTION : Use of controls, adjustments or perfor-
mance of procedures other than those specified
herein may result in hazardous radiation exposure.
REPRODUCTION ANDPOSITIONOFLABELS
WARNING LABEL
! CAUTION Please use enough caution not
to see the beam directly or touch
it in case of an adjustment or
operation check.
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.
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.
1-4
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.
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 ad-
justs the laser power. Do not turn it.
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
Cn601on 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.
1-5
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
nTop cover
nCD changer unit
nFront panel assembly
nChassis unit
nCD changer unit
nRemoving the main PCB
nRemoving the CD changer mechanism assembly
nRemoving the CD pickup
nReplacing the loading motor and belt of the CD changer tray
nReplacing the CD tray rotor belt of CD changer, and removing the motor
nFront panel assembly
nRemoving the cassette deck mechanism
nRemoving the earphone jack PCB
nRemoving the control/FL PCB
nRemoving the switch PCB and ACTIVE BASS EX. switch PCB
nRemoving the cassette deck main motor, and replacing the main belts
nRemoving the leaf switches of the cassette deck mechanism
nRemoving the cassette deck heads
nChassis unit
nRemoving the 3-pin regulator
nRemoving the power amp and supply PCB and the Power Trans PCB
nRemoving the sub power PCB
1-6
<Disassemblyofthe mainblocksof thisset>
Replacement of the fuses and the power IC
nReplacing the fuses (See Fig.1, Fig.4)
n Prior to performing the following procedure, remove
the left side BOARDand remove tuner PCB (Fig.4,BB)
1. Replace the fuses inside.
[Caution] Besure touse fuseswiththe specifiedratings.
nReplacing the power IC (See Fig.2 to 3)
n Prior to performing the following procedure, remove
the top cover.
1. Remove the two screws "A" from the heat sinkbetween
the power IC.
2. Remove the solder fixing the power IC.
Fuse (F952)
T1.6AL250V FW981 Fuse(F981)
T1AL 250V CN981
For CA-MXK10R/15R Fig.1(A)
ComponentSIDE
Fuse(F952)
T1.6AL 250V Fuse (F981)
T2AL 250V CN981
For CA-MXK30R Fig.1(B)
ComponentSIDE
WA
For CA-MXK10R/15R Fig.2
wA
For CA-MXK30R Fig.3
CN981 CAUTION
(don’t remove
thesafetysheet
cover )
Fuse(F981)
T1AL 250V Fuse(F952)
T1.6AL 250V
For CA-MXK10R/15R Fig.1(A)
BOTTOMSIDE
FW981
CN981 CAUTION
(don’t remove
thesafetysheet
cover )
Fuse(F952)
Fuse Hole
HOLE
FW951
For CA-MXK30R Fig.1(B)
BOTTOMSIDE
Fuse (F981)
T2AL 250V
1-7
nReplacing the heat sink cover
1. Remove the six screws "B" from the back panel.
2. Pull the heat sink cover outward.
nRemoving the top cover and two sides BOARD
(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 eight screws "C" and "D" that retain the top from
the two sides of the body.
3. Remove the top cover from the body by lifting it toward the
rear.
BB
B
For CA-MXK30R Fig.4
For CA-MXK10R/K30R Fig.6(A)
For CA-MXK15R Fig.5(B)
For CA-MXK10R/K30R Fig.5(A)
1-8
nRemoving the CD changer unit
(See Fig.7 to 10)
n Prior to performing the following procedures, remove
the top cover and both sides BOARD.
[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 sec-
tions marked with arrows and pull out the CD tray
toward the front.
b. Remove the CDtray panel by pushing both of its ex-
tremities upward in the direction of the arrows.
c. Push the CD tray deep into the set.
1. Disconnect the card wires from the CD PCB CN703
and CN203.
2. From the rear of the set, remove the two screws "E"
and two serews "G" on the front panel left and right
side.
3. Handle the CDchanger unit rear, take out unit.
For CA-MXK15R Fig.6(B)
1-9
For CA-MXK10R/30R Fig.9(A)
For CA-MXK15R Fig.9(B)
1-10
nRemoving the front panel assembly
(See Fig.11 and 12)
n Prior to performing the following procedures, remove
the top cover and both sides board.
n Also remove the CDchanger unit.
1. Disconnect the parallel wire and card wire from the
connectors CN702,CN701,CN101on the power amp
and supply PCB.
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 then GNDlug "b" that
comes from the power amp and supply PCB.
4. Disengage the claws "c" on both sides at the bottom
of the front panel assembly and then remove the
assembly.
This manual suits for next models
8
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