JVC MX-K6 User manual

SP-MXK5 SP-MXK5
CA-MXK5
PLAY& EXCHANGE
DISC CHANGE
SOUND
MODE
ACTIVE BASS
EX.LEVEL
CD-R / RW PLAYBACK
COMPACT
DIGITALAUDIO
COMPACT COMPONENT SYSTEM
MX-K5
CLOCK
/ TIMER DISPLAY
PHONES
REPEAT PROGRAM
REC START
/STOP
CD
REC START DUBBING TAPE A
TUNING
SET
TAPE B
RANDOM
EJECT
PLAY
FULL - LOGIC CONTROL
A
EJECT
REC/PLAY
CD SYNCHRO RECORDING
B
CANCEL
/DEMO
PRESET
COMPU PLAY CONTROL
ACTIV E BASS EXTENSION
STANDBY/ON
STANDBY
DISC SKIP
VOLUME
VOLUME
+
–
STANDBY/ON
123
456
789
10
+10
SLEEP ACTIVEBASS
EX.LEVEL
SOUND
MODE
FM MODE
TAPE A/B FADE
MUTING
FM/AM
AUX
/
CD
TAPE
RM–SMXK5AREMOTE CONTROL
SERVICE MANUAL
COMPACT COMPONENT SYSTEM
No.20928
Mar. 2001
COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD.
MX-K5 / MX-K6
MX-K5/MX-K6
Area Suffix
Area Suffix
J
C
C
U.S.A.
Canada
Canada
Contents
Safety Precautions
Important for laser products
Preventing static electricity
Disassembly method
Wiring connection
Adjustment method
Flow of functional operating
until TOC read
Maintenance of laser pickup
Replacement of laser pickup
Trouble shooting
Description of major ICs
1-2
1-3
1-4
1-5
1-19
1-20
1-24
1-25
1-25
1-26
1-29
MX-K5
MX-K6
CA-MXK5
CA-MXK6
SP-MXK5
SP-MXK6
MX-K5
MX-K6
Each difference points
CD/DECK/
RECEIVER Speaker
Color
POWER / SUB / CD EJECT /
DISK CHANGER bottom
SILVER
METALLIC LIGHT GRAY
VOLUME RING
ornament CD fitting
MODEL

MX-K5/MX-K6
1-2
Safety Precautions
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 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 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.).
Warning
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.
Good earth ground
Place this
probe on
each exposed
metal part.
AC VOLTMETER
(Having 1000
ohms/volts,
or more sensitivity)
1500 10W
0.15 F AC TYPE
!
CAUTION
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.

MX-K5/MX-K6
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
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.
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.
REPRODUCTION AND
POSITION OF LABELS FUSE CAUTION
WARNING LABEL
FUSE CAUTION LABEL
!
CAUTION
Please use enough caution not to
see the beam directly or touch it
in case of an adjustment or operation
check.
Power transformer
Bottom shassis

MX-K5/MX-K6
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 traverse unit (optical pickup)
1. Do not subject the traverse 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 traverse
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
Conductive material
(conductive sheet) or iron plate
(caption)
Anti-static wrist strap
Attention when CD mechanism assembly is decomposed
1. Remove the CD changer unit.
2. Remove the CD changer mechanism.
3. Solder is put up before the card wire is removed from the pickup unit
connector on the CD mechanism assembly.
(When the card wire is removed without putting up solder, the CD pick-up
assembly might destroy.)
4. Please remove solder after connecting the card wire with the pickup unit
connector when you install picking up in the substrate.
*Please refer to "Disassembly method" in the text for pick-up and how to
detach the CD mechanism assembly.
Soldering
Fig.1
Fig.2
Card wire
Card wire
Picup unit
connector
Picup unit
connector
CD changer unit
CD changer
mechanism

MX-K5/MX-K6
Remove the three screws Aattaching the metal
cover on the back of the body.
Remove the six screws Battaching the metal cover
on both sides of the body.
Remove the metal cover from the body by lifting the
rear part of the cover.
1.
2.
3.
Disassembly method
<Main body>
Removing the metal cover
(See Fig.1 to 3)
Do not break the front panel tab fitted
to the metal cover.
ATTENTION: Fig.1
Fig.2
Fig.3
Metal cover
A
AA
Metal cover
B
Metal cover B
B
B

MX-K5/MX-K6
1-6
Prior to performing the following procedure, remove
the metal cover.
Press the POWER button. Press the OPEN/CLOSE
button to eject the CD tray.
After drawing the lower part of the tray fitting toward
the front, remove the five claws a. Then, while
moving the tray fitting upward, remove it.
Press the OPEN/CLOSE button to insert the tray.
1.
2.
3.
Removing the CD Tray fitting (1)
(See Fig. 4 to 6)
Turn the black loading pulley gear marked bfrom the
back of the CD changer unit as shown in Fig.7 and
draw the CD tray toward the front.
After drawing the lower part of the tray fitting toward
the front, remove the five claws a. Then, while
moving the tray fitting upward, remove it.
Push and insert the CD tray manually.
1.
2.
3.
Removing the CD Tray fitting (2)
(See Fig. 5 to 7)
- How to eject the CD tray without turning on power -
Fig.4
Fig.5
Fig.6
Fig.7
POWER button
OPEN/CLOSE button
CD tray
Joint
Claw a
CD tray fitting
(See Fig. 24)
CD tray
This slot of the board.
b
(Loading pulley gear)

MX-K5/MX-K6
Prior to performing the following procedure, remove
the metal cover.
Disconnect the card wire which is attached with
adhesive to the left side of the CD changer unit.
Disconnect the card wire from connector CW105 of
the CD servo board on the back of the CD changer
unit.
Disconnect the harness from connector RCW6 on
the inner side of the main board in the body.
Remove the two screws C attaching the CD changer
unit on the back of the body.
Remove the two screws Dattaching the CD changer
unit on the both side of the body.
Draw the CD changer unit upward from behind while
pulling the rear panel outward.
1.
2.
3.
4.
5.
6.
Removing the CD changer unit
(See Fig.8 to 10)
Fig.8
Fig.9
Fig.10 aFig.10 b
CW105
CD servo board
CD changer unit
Main board RCW6
Rear panel
C
D
D
Rear panel Rear panel
Front panel assembly
Adhesive card wire strap
CD changer unit
CD changer unit

MX-K5/MX-K6
1-8
Prior to performing the following procedure, remove
the metal cover and the CD changer unit.
Disconnect the card wire from connector FCW3 and
the harness from connector JCW1, JCW2 and
HCW3 on the inner side of the main board in the
body.
Remove the two screws Eattaching the front panel
assembly on both sides of the body.
Remove the screw Fattaching the earth terminal
extending from the cassette mechanism assembly.
Remove the screw Gattaching the front panel
assembly and main board.
Remove the screw Hattaching the front panel
assembly on the bottom of the body.
Release the two joints con both sides and two joints
don the bottom of the body using a screwdriver.
1.
2.
3.
4.
5.
6.
Removing the front panel assembly
(See Fig.11 to 13)
Fig.11
Fig.12
Fig.13
Main board
FCW3
JCW2
JCW1
HCW3
ACW1
ACW2
Front panel assembly
Joint c
earth wire
EF
Front panel assembly
G
E
Main board
HJoint d
Joint d
Joint c
Bottom side

MX-K5/MX-K6
Prior to performing the following procedure, remove
the metal cover and the CD changer unit.
Remove the four screws Iattaching the heat sink
cover on the back of the body. Remove the heat sink
cover.
Remove the four screws Jattaching the heat sink &
AMP board to the rear panel on the back of the body.
Remove the two screws Kattaching the speaker
terminal to the rear panel on the back of the body.
Disconnect the card wire from connector ACW1 &
the harness from connector ACW2 on the AMP
board. (See Fig.11)
After moving the heat sink upward, remove the
claws. Then pull out the heat sink & AMP board
1.
2.
3.
4.
5.
Removing the heat sink & AMP board
(See Fig.14 and 15)
Prior to performing the following procedure, remove
the metal cover and CD changer unit.
Disconnect the card wire from connector CON01 on
the tuner board.
Remove the two screws L attaching the tuner pack.
1.
2.
Removing the tuner pack
(See Fig.15 and 16)
Prior to performing the following procedure, remove
the metal cover, CD changer unit, heat sink & AMP
board and tuner pack.
Remove the four screws M attaching the rear panel.
1.
Removing the rear cover
(See Fig.17)
Fig.14
Fig.15
Fig.16
Fig.17
Rear panel
Heat sink
cover
Heat sink
Speaker terminal
Tuner terminal
K
L
I
I
Main board
Tuner board
CON01
J
J
M
M

MX-K5/MX-K6
1-10
Prior to performing the following procedure, remove
the metal cover CD changer unit and heat sink &
AMP board.
Remove the two screws Pattaching the power IC to
the heat sink.
Unsolder the power IC solder point.
1.
2.
Removing the power IC
(See Fig.19 and 20)
Prior to performing the following procedure, remove
the metal cover, CD changer unit.
Disconnect the card wire from connector FCW3 and
the harness from connector JCW1, JCW2 and
HCW3 on the main board.
Disconnect the harness from connector PCW1 on
the power transformer board.
Remove the screw Gattaching the main board
holder. (See Fig.12)
Remove the two screws N attaching the heat sink
and bottom chassis.
1.
2.
3.
4.
Removing the main Board
(See Fig. 18)
Prior to performing the following procedure, remove
the metal cover, heat sink & AMP board, tuner pack
and rear cover.
Disconnect the power cord from connector RCW2 of
the power transformer board.
Disconnect the harness from connector PCW1 of the
power transformer board.
Remove the four screws Rattaching the power
transformer and the screw Sattaching the earth.
1.
2.
3.
Removing the power transformer
(See Fig .21)
Fig.21
Fig.20
Fig.19
Fig.18
Transformer board
N
RRS
P
Heat sink
AMP board
FCW3 JCW2 JCW1 HCW3
PCW1
Heat sink
Power cord
Power transformer
Power ICs solder point
Main board
RCW2
PCW1

MX-K5/MX-K6
Disconnect the card wire from the connector UCW3,
UCW4,UCW5 and UCW6 on the FL & system control
board.
Remove the five screws U attaching the FL & system
board.
Disconnect the card wire from the connector UCW2
on the FL & system control board.
1.
2.
3.
Removing the FL display & system
control board
(See Fig.22 and 23)
Disconnect the card wire from connector UCW1 on
the power / CD switch board.
Remove the five screws Tattaching the power / CD
switch board and release the tab e.
1.
2.
Prior to performing the following procedure, remove
the metal cover, the CD changer unit and the front
panel assembly.
Removing the power / CD switch board
(See Fig.22)
Prior to performing the following procedure, remove
the FLdisplay & system control board.
Pull out the VOLUME knob, ACTIVE BASS EX.
LEVEL knob and SOUND MODE nob from front
side.
Remove the ten screws V attaching the front board
and release the two tabs fout ward.
1.
2.
Removing the front board (See Fig.24)
<Front panel assembly>
Prior to performing the following procedure remove
the FLdisplay & system control board.
You can pull out the headphone board.
1.
Removing the headphone board
(See Fig.24)
Disconnect the card wire xfrom the mechanism
board on the cassette mechanism assembly.
Remove the six screws Wattaching the cassette
mechanism assembly.
1.
2.
Removing the cassette mechanism
assembly (See Fig.24)
Fig.22
Fig.23
Fig.24
Headphone
board
Tab e
Cassette mechanism assembly
T
Power / CD switch board
V
V
U
U
FLdiplay & system
control board
W
Front board
Card wire x
Sound mode knob
Volume knob
Subwoofer knob
f
V
UCW2
UCW3
UCW4
UCW5
UCW6
UCW1

MX-K5/MX-K6
1-12
Turn the black loading pulley gear on the under side
of the CD changer unit in the direction of the arrow
and draw the CD tray toward the front until it stops.
Disconnect the card wire from connector CW103 of
the CD servo board on the upper side of the CD
changer unit.
Push down the two tray stoppers marked gand pull
out the CD tray.
1.
2.
3.
Align the gear-cam with the gear-tray as shown
fig.27, then mount the CD tray.
When assembling the CD tray, take extreme care not
engage with gear - synchro.
1.
2.
Prior to performing the following procedure, remove
the CD changer unit.
Removing the CD tray (See Fig.25 to 27)
Reinstall the CD tray (See Fig.28 to 29)
<CD changer unit>
Fig.26
Fig.25
Fig.27
Fig.28 Fig.29
Loading pulley gear CD tray
CD tray
CD tray
Gear-convert
Gear-convert
Gear-cam
Gear-tray
Gear-synchro
Gear-tray
Gear-tray
Gear-cam
timing point
CD tray
CD servo board
CW103
g
(Tray stopper)
g (Tray stopper)

MX-K5/MX-K6
Prior to performing the following procedure, remove
the CD tray.
Remove the screw X attaching the sensor board and
release the two tabs hattaching the sensor board on
the under side of the CD tray.
Disconnect the harness from connector CW1 on the
sensor board and release the harness from the two
hooks i. Remove the sensor board.
Remove the screw Yattaching the turn table. Detach
the turn table from the tray.
Pull outward the tab marked jattaching the turn table
motor assembly on the upper side of the tray and
detach the turn table motor assembly from the tray.
1.
2.
3.
4.
Removing the sensor board / the turn
table motor assembly (See Fig.30 to 32)
Fig.31
Fig.30
Fig.32
h
h
iSensor board
CW1
Turn table
Tray
Y
Turn table motor assembly
j
X

MX-K5/MX-K6
1-14
Prior to performing the following procedure, remove
the CD tray.
Detach the belt from the pulley on the upper side of
the CD changer unit (Do not stain the belt with
grease).
Disconnect the card wire from the pickup unit
connector on the under side of the CD changer unit.
Attention : Solder is put up before the card wire is
removed from the pick-up unit
connector on the CD mechanism
assembly.
(When the card wire is removed without
putting up solder, the CD pick-up unit
assembly might destroy.)
Disconnect the motor wire harness from connector
on the CD servo board.
Remove the screw Zattaching the switch board and
release the two tabs kattaching the switch board
outward and detach the switch board.
Remove the two screws A' attaching the CD servo
board and . First release the nside of the two tabs l
and two tabs mattaching the CD servo board motor
to raise the CD servo board slightly, then release the
CD servo board.
If the tabs land mare hard to release, it is
recommendable to unsolder the two soldered parts
on the motor terminal of the CD servo board.
1.
2.
3.
4.
5.
Removing the belt, the CD servo board
and the switch board (See Fig.33 and 34)
Soldering
Card wire
Pickup unit
connector
Fig.34
Fig.33
Belt
CD changer unit
A' CD servo board
Tabs m
Tabs l
Soldered parts
Motor
Switch board
Z
CW3
Tabs k
CD mechanism board
motor connector
Pickup unit connector

MX-K5/MX-K6
Disconnect the harness from connector on the CD
mechanism board in the CD mechanism assembly
on the under side of the CD changer unit. Disconnect
the card wire from the pickup unit connector.
Attention : Solder is put up before the card wire is
removed from the pick-up unit
connector on the CD mechanism
assembly. (Refer to Fig. 33)
(When the card wire is removed without
putting up solder, the CD pick-up unit
assembly might destroy.)
Remove the screw B' attaching the shaft on the right
side of the CD mechanism holder assembly. Pull
outward the stopper fixing the shaft on the left side
and remove the CD mechanism holder assembly
from behind in the direction of the arrow.
Turn the CD mechanism holder assembly half
around the lift up slide shaft nof the CD mechanism
holder assembly until the turn table is reversed, and
pull out the CD mechanism holder assembly.
1.
2.
3.
Removing the CD mechanism holder
assembly (mechanism included)
(See Fig.35 to 38)
Fig.35
Fig.36
Fig.37
Fig.38
Motor connector
CD mechanism holder assembly
CD changer unit
Pickup unit connector
B'
CD mechanism holder assembly Stopper
CD mechanism holder assembly
Lift up slide shaft n
Lift up slide shaft
CD mechanism holder assembly
y

MX-K5/MX-K6
1-16
Fig.2
Fig.1
Cut washer
Unsolder
<CD mechanism section>
•
Removing the CD mechanism holder from the CD
chager unit.
(Refer to "Removing the CD mechanism holder
assembly" )
Removing the pickup unit. ( See Fig.1)
1. Removing the cut washer con the feed gear
sleeve and pull out the feed gear.
2. Remove the two screws Afixing the pickup
shaft.
3. Removing the pickup unit.
Removing the feed motor. (See Fig.1)
Remove the two motor fixing screws at Band
removing the feed motor.
Removing the spindle motor.
The spindle motor cannot be removed as a single unit.
When removing the spindle motor, change the chasis
and turntable together as aunit.
A
A
B
Shaft
Feed Gear
Shutter
Pickup unit
Motor board Unsolder Feed motor
Spindle motor
Removing the motor board. (See Fig.2)
1. Unsolder the motor terminal on the motor board.
2. Remove the moter board.

MX-K5/MX-K6
<Cassette mechanism section>
Removing the record/playback mechanism.
Removing the R/P head.
1. Remove the screw Aon the right side of the
R/P head.(Fig.1, Fig.2)
2. Remove the screw Bon the left side of the
R/P head.(Fig.1, Fig.2)
Remove the erase head.
Remove the screw Cfixing the erase head.(Fig.1)
Removing the pinch roller.
1. Pull out the pinch roller by opening the pinch
roller stopper outward to unlock .(Fig.3)
2. When reassembling the pinch roller, refer to
fig. 4 to hook up the spring.
Fig.1
Fig.2
Fig.3
Fig.4
R/P Head
R/P Head
E. Head
Spring
Stoppsr
Pinch roller
assembly
A
A
B
B
C
Pinch roller Pinch roller
stopper
Pinch roller Pinch roller spring
Return spring
Return spring
Return spring

MX-K5/MX-K6
1-18
Fig.5
Drive belt
Drive belt
Drive belt (Flat)
D
D
EE
abb
a
Motor
Motor
terminal
Motor
c
d
FR belt
FR belt
Washer
Capstan
washer
Flywheel
Flywheel
Flywheel
Capstan
washer
Mecha.
board
Fig.6
Fig.7
Fig.8Fig.9
Sleeve
Sleeve
Removing the motor.
1. Remove the two screws Dfixing the motor.
Be careful to grease's splash when the
drive belt comes off.(Fig.5, Fig.6)
2. Unsolder the motor terminal.(Fig.5)
Removing the mechanism board.
1. Unsolder the four parts aon the solenoid
coil terminal.(Fig.5)
2. Remove the two screws Efixing the board.(Fig.5)
3. Unhook the three parts bfrom the board.(Fig.5)
4. Remove the mechanism board.(Fig.5)
Removing the flywheel.
Remove the cut-washers at c and dfrom the
capstan shaft, then remove the flywheel.
When reassembling the flywheel,
be sure to use new washers as they
cannot be reused.(Fig.8, Fig.9)

MX-K5/MX-K6
09
0
0
92
0
09
90
9
0
9
0
009
9
9
882
00
0
0
0
2
22
8
8
999
9
09
0
0
2
2
90
0
9
0
0
9
09
JW1
FCW3
JCW2
FCW3
JCW1
RCW6
FCW1
FCW2
HCW3
RW1 RW2
HCW2
Cassette mechanism
UCW1
UCW7
UCW2
UCW3
UCW4
UCW6
UCW5
CW3
CW101
CW104
CW102 CW103
CW106
CW107
CW105
CW2 CW1
CW3
AAN1
CD mechanism
RCW2
RFS2
Power transformer
RFS5 RFS6 RFS7 RFS8
PCW1
ACW1
ACW2
Front / Display board
3708-000122
3708-000258 3809-001228
AH39-20002D
AH39-00022A
AH39-00247A
AH39-20025S
3809-001185
AH39-00249A
AH39-00254A
3809-001224
AH39-20561P
3809-001121
16634-502-610
3809-001034
Amp board
CD key switch board
Front key switch board
Tuner board
Main board
E.phone J.board
Color codes are shown below.
1 Brown
2 Red
3 Orange
4 Yellow
5 Green
6 Blue
7 Violet
8Gray
9 White
0 Black
Wiring connection

MX-K5/MX-K6
1-20
* Adjustment Location of Tuner PCB
AM(MW) OSC
Adjustment
Output 1~7.0 0.5V
Received FREQ.
Adjustment
point
530~1710 KHz
MO
AM(MW) RF
Adjustment
ITEAM
594 KHz
MA
Maximum
Output(Fig1-4)
TESTER
MAIN
PCB VT GND
Fig 1-4 OSC Voltage
LW OSC
Adjustment
(Except for J/C)
146~290 KHz
LO
2~7.0 0.5V
AM(MW) RF
Adjustment
150 KHz
LA
Maximum
Output(Fig1-4)
Adjustment method
1. Tuner