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SERVICE MANUAL
COMPACT COMPONENT SYSTEM
5
2004
MB160
MX-GB6, MX-GB5
Area suffix
J ----------------------------- U.S.A.
C -------------------------- Canada
SP-MXGB6 CA-MXGB6 SP-MXGB6
SP-MXGB5 CA-MXGB5 SP-MXGB5
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36
COPYRIGHT © 2004 VICTOR COMPANY OF JAPAN, LIMITED No.MB160
2004/5
SPECIFICATION
Amplifier section-CA-MXGB6
Output Power SUBWOOFERS 170 W per channel, min. RMS, driven into 6 at 63 Hz with no more than
10% total harmonic distortion.
MAIN SPEAKERS 80 W per channel, min. RMS, driven into 4 at 1 kHz with no more than
10% total harmonic distortion.
Audio input sensitivity/Impedance AUX:400 mV/50 k
(at 1 kHz, measured at MAIN SPEAKERS)
Speakers/Impedance Subwoofers 6 - 16
Main speakers 4-8
Tuner FM tuning range 87.50 MHz - 108.00 MHz
AM tuning range 530 kHz - 1 710 kHz
CD player CD Capacity 3 CDs
Dynamic range 85 dB
Signal-to-noise ratio 85 dB
Cassette deck Frequency response Normal (type I) 50 Hz - 14 000 Hz
Wow and flutter 0.15% (WRMS)
General Power requirement AC 120 V , 60 Hz
Power consumption 230 W (at operation)
23.8 W (on standby)
Dimensions (approx.) 270 mm × 317 mm × 480 mm (W/H/D)
(10 11/16 in. × 12 1/2 in. × 18 15/16 in.)
Mass (approx.) 10.5 kg (23.2 lbs)
Speaker section-SP-MXGB6
Type 3-way bass-reflex type
Speaker units Subwoofer 20 cm (7 7/8 in.) cone × 1
Main Woofer 12 cm (4 3/4 in.) cone × 1
Tweeter 5 cm (2 in.) cone × 1
Power handling capacity Subwoofer 170 W
Main speaker 80 W
Impedance Subwoofer 6
Main speaker 4
Frequency range Subwoofer 25 Hz - 100 Hz
Main speaker 100 Hz - 20 000 Hz
Sound pressure level Subwoofer 75 dB/W·m
Main speaker 82 dB/W·m
Dimensions (approx.) 233 mm × 456 mm × 360 mm (W/H/D)
(9 3/16 in. × 18 in. × 14 3/16 in.)
Mass (approx.) 6.6 kg (14.6 lbs) each
Design and specifications are subject to change without notice.
1-2 (No.MB160)
Amplifier section-CA-MXGB5
Output Power SUBWOOFERS 160 W per channel, min. RMS, driven into 6 at 63 Hz with no more than
10% total harmonic distortion.
MAIN SPEAKERS 70 W per channel, min. RMS, driven into 4 at 1 kHz with no more than
10% total harmonic distortion.
Audio input sensitivity/Impedance AUX:400 mV/50 k
(at 1 kHz, measured at MAIN SPEAKERS)
Speakers/Impedance Subwoofers 6 - 16
Main speakers 4-8
Tuner FM tuning range 87.50 MHz - 108.00 MHz
AM tuning range 530 kHz - 1 710 kHz
CD player CD Capacity 3 CDs
Dynamic range 85 dB
Signal-to-noise ratio 85 dB
Cassette deck Frequency response Normal (type I) 50 Hz - 14 000 Hz
Wow and flutter 0.15% (WRMS)
General Power requirement AC 120 V , 60 Hz
Power consumption 220 W (at operation)
23.3 W (on standby)
Dimensions (approx.) 270 mm × 317 mm × 480 mm (W/H/D)
(10 11/16 in. × 12 1/2 in. × 18 15/16 in.)
Mass (approx.) 10 kg (22.1 lbs)
Speaker section-SP-MXGB5
Type 4-way bass-reflex type
Speaker units Subwoofer 16 cm (6 5/16 in.) cone × 1
Main Woofer 16 cm (6 5/16 in.) cone × 1
Tweeter 2 cm (13/16 in.) dome × 1
Midrange 5 cm (2 in.) cone × 1
Tweeter 2 cm (13/16 in.) dome × 1
Power handling capacity Subwoofer 160 W
Main speaker 70 W
Impedance Subwoofer 6
Main speaker 4
Frequency range Subwoofer 25 Hz - 90 Hz
Main speaker 90 Hz - 20 000 Hz
Sound pressure level Subwoofer 75 dB/W·m
Main speaker 86 dB/W·m
Dimensions (approx.) 302.5 mm × 325.5 mm × 345 mm (W/H/D)
(11 15/16 in. × 12 7/8 in. × 13 5/8 in.)
Mass (approx.) 6.6 kg (14.6 lbs) each
Design and specifications are subject to change without notice.
(No.MB160)1-3
SECTION 1
PRECAUTION
1.1 Safety Precautions
(1) This design of this product contains special hardware and voltmeter.
many circuits and components specially for safety purpos- Move the resistor connection to each exposed metal
es. For continued protection, no changes should be made part, particularly any exposed metal part having a return
to the original design unless authorized in writing by the path to the chassis, and measure the AC voltage across
manufacturer. Replacement parts must be identical to the resistor. Now, reverse the plug in the AC outlet and
those used in the original circuits. Services should be per- repeat each measurement. Voltage measured any must
formed by qualified personnel only. not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5
mA AC (r.m.s.).
(2) Alterations of the design or circuitry of the product should AC VOLTMETER
not be made. Any design alterations of the product should (Having 1000
not be made. Any design alterations or additions will void ohms/volts,
the manufacturers warranty and will further relieve the or more sensitivity)
manufacture of responsibility for personal injury or property
damage resulting therefrom. 0.15 F AC TYPE
Place this
(3) Many electrical and mechanical parts in the products have probe on
special safety-related characteristics. These characteris- each exposed
tics are often not evident from visual inspection nor can the 1500 10W metal part.
protection afforded by them necessarily be obtained by us-
Good earth ground
ing replacement components rated for higher voltage, watt-
age, etc. Replacement parts which have these special
safety characteristics are identified in the Parts List of Ser- 1.2 Warning
vice Manual. Electrical components having such features
are identified by shading on the schematics and by ( ) on (1) This equipment has been designed and manufactured to
the Parts List in the Service Manual. The use of a substitute meet international safety standards.
replacement which does not have the same safety charac- (2) It is the legal responsibility of the repairer to ensure that
teristics as the recommended replacement parts shown in these safety standards are maintained.
the Parts List of Service Manual may create shock, fire, or (3) Repairs must be made in accordance with the relevant
other hazards. safety standards.
(4) It is essential that safety critical components are replaced
(4) The leads in the products are routed and dressed with ties, by approved parts.
clamps, tubings, barriers and the like to be separated from (5) If mains voltage selector is provided, check setting for local
live parts, high temperature parts, moving parts and/or voltage.
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 1.3 Caution
that they have been returned to normal, after reassem- Burrs formed during molding may be left over on some parts
bling. of the chassis.
Therefore, pay attention to such burrs in the case of pre-
(5) Leakage shock hazard testing forming repair of this system.
After reassembling the product, always perform an isola-
tion check on the exposed metal parts of the product (an-
tenna terminals, knobs, metal cabinet, screw heads, 1.4 Critical parts for safety
headphone jack, control shafts, etc.) to be sure the product
In regard with component parts appearing on the silk-screen
is safe to operate without danger of electrical shock.Do not
printed side (parts side) of the PWB diagrams, the parts that are
use a line isolation transformer during this check.
printed over with black such as the resistor ( ), diode ( )
· Plug the AC line cord directly into the AC outlet. Using a
and ICP ( ) or identified by the " " mark nearby are critical
"Leakage Current Tester", measure the leakage current
for safety. When replacing them, be sure to use the parts of the
from each exposed metal parts of the cabinet, particular-
same type and rating as specified by the manufacturer.
ly any exposed metal part having a return path to the
(This regulation dose not Except the J and C version)
chassis, to a known good earth ground. Any leakage cur-
rent 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 per volt or more sensitivity
in the following manner. Connect a 1,500 10W resistor
paralleled by a 0.15µF AC-type capacitor between an
exposed metal part and a known good earth ground.
Measure the AC voltage across the resistor with the AC
1-4 (No.MB160)
1.5 Preventing 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.
1.5.1 Grounding to prevent damage by static electricity
Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as laser products.
Be careful to use proper grounding in the area where repairs are being performed.
(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) Ground yourself
Use an anti-static wrist strap to release any static electricity built up in your body.
(caption)
Anti-static wrist strap
1M
Conductive material
(conductive sheet) or iron palate
(3) Handling the optical pickup
· 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.)
· 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.
1.6 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) I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.
1.7 Attention when traverse unit is decomposed
*Please refer to "Disassembly method" in the text for the pickup unit.
· Apply solder to the short land sections before the flexible wire is disconnected from the connecto on the servo board. (If the flexible
wire is disconnected without applying solder, the pickup may be destroyed by static electricity.)
· In the assembly, be sure to remove solder from the short land sections after connecting the flexible wire.
Card wire
Pickup
Card wire
Pickup unit
connector
Short land section Pickup unit connector
(No.MB160)1-5
1.8 Importance administering point on the safety
Caution: For continued protection against risk of
fire, replace only with same type 5 A/250 V[GB5]
(6.3 A/250 V[GB6]) for RFS2, 6.3 A/250 V[GB5]
(8 A/250 V[GB6]) for RFS5 and RFS6, 8 A/250 V
for RFS7 and RFS8, 5 A/250 V for RFS9.
This symbol specifies type of fast operating fuse.
Precaution: Pour eviter risques de feux, remplacez
le fusible de surete de RFS2 comme le meme type
que 5 A/250 V[GB5](6.3 A/250 V[GB6]),
6,3 A/250 V[GB5](8 A/250 V[GB6]) pour RFS5 et
RFS6, 8 A/250 V pour RFS7 et RFS8, et
5 A/250 V pour RFS9.
^
Ce sont des fusibles suretes qui functionnes rapide.
1-6 (No.MB160)
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.
(No.MB160)1-7
SECTION 3
DISASSEMBLY
3.1 Main body section
3.1.1 Removing the top cabinet
(See Figs.1 to 3)
(1) From the back side of the main body, remove the three
Top cabinet
screws A attaching the top cabinet. (See Fig.1.) A
(2) From the both sides of the main body, remove the six
screws B attaching the top cabinet. (See Figs.2 and 3.)
(3) Remove the top cabinet from the main body while lifting the
rear section of the top cabinet in the direction of the arrow. A A
(See Figs.2 and 3.)
Fig.1
B Top cabinet
B
Fig.2
Top cabinet B
B
Fig.3
1-8 (No.MB160)
3.1.2 Removing the CD changer mechanism assembly
(See Figs.4 to 10)
· Prior to performing the following procedures, remove the top
CD changer mechanism assembly
cabinet.
(1) From the bottom side of the CD changer mechanism as- Gear cam
sembly, turn the gear cam in the direction of the arrow and
draw the tray disc out of the CD changer mechanism as-
sembly in the direction of the arrow 1. (See Figs.4 and 5.)
(2) Remove the CD door assembly from the tray disc in the di-
rection of the arrow 2 and push in the tray disc. (See Fig.5.)
(3) From the left side of the main body, remove the spacers fix-
ing the wire. (See Fig.5.)
(4) From the right side of the main body, disconnect the wire
from the connector CW104 on the main board. (See Fig.6.)
(5) Disconnect the card wire from the connector CW105 on the
CD sub board. (See Fig.6.)
(6) From the back side of the main body, remove the five
screws C attaching the heat sink cover. (See Fig.7.)
Reference:
It is not necessary to disconnect the wire of the fan mo-
tor. (See Fig.8.)
(7) Remove the two screws D attaching the CD changer mech- Fig.4
anism assembly. (See Fig.8.) CD changer mechanism assembly
(8) From the both sides of the main body, remove the two
CD door assembly
screws E attaching the CD changer mechanism assembly.
(See Figs.9 and 10.) Tray disc
(9) Take out the CD changer mechanism assembly in the di- Spacers
rection of the arrow 2 while extending the rear cabinet in 2
the direction of the arrow 1. (See Figs.9 and 10.)
1
Wire
Fig.5
CD sub board
Card wire
CW105
Wire
CW104 Main board
Fig.6
(No.MB160)1-9
Heat sink cover CD changer mechanism assembly
C
2
E
C 1
Rear cabinet
C Fig.10
Fig.7
D
Wire
Fig.8
CD changer mechanism assembly
2
E
1
Rear cabinet
Fig.9
1-10 (No.MB160)
3.1.3 Removing the front cabinet assembly
(See Figs.11 to 14)
· Prior to performing the following procedures, remove the top
Front cabinet assembly
cabinet and CD changer mechanism assembly.
(1) From the forward side of the main board, disconnect the
card wire from the connector CW101. (See Fig.11.)
(2) Disconnect the wires from the connectors (CW01A,
CW108, CW109, CW111, CW112) on the main board.
(See Fig.11.)
(3) From the top side of the main body, remove the screw F at- H
taching the earth wire. (See Fig.12.)
(4) From the both sides of the main body, remove the two
screws G attaching the front cabinet assembly. (See
Figs.12 and 13.)
(5) From the left side of the main body, remove the screw H at-
taching the front cabinet assembly. (See Fig.13.)
(6) From the bottom side of the main body, remove the screw
J attaching the front cabinet assembly. (See Fig.14.)
(7) Release the two joints a and two joints b, remove the front
cabinet assembly in the direction of the arrow. (See Figs.12 G a
to 14.) Fig.13
CW101 Front cabinet assembly
Card wire CW01A Main board
Wire
Wire
CW112
b J
CW109 Wire Wire CW108 Wire CW111 Fig.14
Fig.11
Front cabinet assembly
a
G F
Earth wire
Fig.12
(No.MB160)1-11
3.1.4 Removing the rear cabinet
(See Figs.15 to 17.)
· Prior to performing the following procedures, remove the top
Rear cabinet
cabinet.
(1) From the right side of the main body, disconnect the wires L
from the connector ACW3 on the amplifier board. (See
Fig.15.)
(2) From the back side of the main body, remove the five
screws K attaching the heat sink cover. (See Fig.16.)
(3) Remove the thirteen screws L attaching the rear cabinet.
(See Fig.17.)
3.1.5 Removing the fan motor
(See Figs.15, 16 and 18)
· Prior to performing the following procedures, remove the top L
cabinet.
(1) From the right side of the main body, disconnect the wires
from the connector ACW3 on the amplifier board. (See
Fig.15.)
(2) From the back side of the main body, remove the five
screws K attaching the heat sink cover. (See Fig.16.)
(3) From the back side of the heat sink cover, remove the two L
screws M attaching the fan motor. (See Fig.18.)
Amplifier board
L
Fig.17
M Fan motor
Wire
ACW3
Fig.15
K
Heat sink cover
Fig.18
K
K Heat sink cover
Fig.16
1-12 (No.MB160)
3.1.6 Removing the amplifier board
(See Figs.19 and 20)
· Prior to performing the following procedures, remove the top
Amplifier board ACW2
cabinet and CD changer mechanism assembly.
(1) From the top side of the main body, disconnect the wires ACW3
from the connectors (ACW2, ACW3, ACW4) on the ampli- ACW4 Wire
Wire
fier board. (See Fig.19.)
ACW1
Reference:
After connecting the wires to the connectors (ACW2,
ACW3), fix the wires with the wire holders as before.
(See Fig.19.)
(2) Disconnect the card wire from the connector ACW1 on the
amplifier board. (See Fig.19.)
(3) From the back side of the main body, remove the six
screws N attaching the amplifier board. (See Fig.20.)
(4) Release the claws (c, d) from the rear cabinet and take out
the amplifier board from the inside of the main body. (See
Fig.20.) Wire Cord wire
Wire holders
Fig.19
Amplifier board
c
N
d
N
N Rear cabinet
Fig.20
(No.MB160)1-13
3.1.7 Removing the heat sink
(See Figs.21 to 23)
· Prior to performing the following procedures, remove the top
Amplifier board
cabinet, CD changer mechanism assembly and amplifier
board.
(1) From the reverse side of the amplifier board, remove the
two screws P attaching the heat sink. (See Fig.21.)
(2) From the forward side of the amplifier board, remove the
four screws Q attaching the power amplifier IC on the heat
sink. (See Fig.22.)
(3) From the bottom side of the heat sink, remove the four
P P
screws R attaching the brackets on the heat sink. (See
Fig.23.)
Heat sink
Fig.21
Power amplifier IC
Amplifier board
Q
Fig.22
Bracket Bracket
Heat sink
R R
Fig.23
1-14 (No.MB160)
3.1.8 Removing the tuner
(See Figs.24 and 25)
· Prior to performing the following procedures, remove the top
Tuner
cabinet.
(1) From the back side of the main body, remove the two
screws S attaching the tuner. (See Fig.24.)
(2) From the left side of the main body, take out the tuner.
(3) From the forward side of the tuner, disconnect the card wire
from the connector CON01. (See Fig.25.)
S
Fig.24
Card wire
CON01
Tuner
Fig.25
(No.MB160)1-15
3.1.9 Removing the main board
(See Figs.26 to 28)
· Prior to performing the following procedures, remove the top
CW101 Wires Main board
cabinet, CD changer mechanism assembly and amplifier Card wire
board. Card wire CW01A CW112
(1) From the forward side of the main board, disconnect the
card wires from the connectors (CW101, CW102). (See CW109 CW102
Fig.26.)
(2) Disconnect the wires from the connectors (CW01A, Wires
CW108, CW109, CW111, CW112) on the main board.
(See Fig.26.)
(3) Disconnect the wire from the connector PCW1 on the pow-
er supply board. (See Fig.26.)
(4) From the left side of the main body, remove the screw T at-
taching the main board. (See Fig.27.)
(5) From the top side of the main body, remove the two screws
U attaching the main board. (See Fig.28.)
(6) Take out the main board from the main body.
Wires
Reference:
Insert the main board in the slot e before attaching the main
board to the bottom chassis. (See Fig.28.) CW108 PCW1 CW111
Power supply board
3.1.10 Removing the power supply board
Fig.26
(See Figs.26 and 28)
· Prior to performing the following procedures, remove the top
cabinet, CD changer mechanism assembly and amplifier
board.
(1) From the forward side of the power supply board, discon-
nect the wire from the connector PCW1. (See Fig.26.) T
(2) Disconnect the power cord from the connector PW101 on
the power supply board. (See Fig.28.)
(3) From the top side of the main body, remove the four screws
V attaching the power supply board. (See Fig.28.)
(4) Take out the power supply board from the main body.
Main board
Fig.27
V V Power supply board
Power cord
PW101
e
U Main board
Fig.28
1-16 (No.MB160)
3.1.11 Removing the CD board
(See Fig.29)
· Prior to performing the following procedures, remove the top
CD board
cabinet, CD changer mechanism assembly and front cabinet W W
assembly. f g
(1) From the inside of the front cabinet assembly, disconnect
the wire from the connector UCW05 on the VFD board. Wier
(2) Remove the four screws W attaching the CD board. h
Reference:
When attaching the CD board, align the projections (f, g) of the UCW05
front cabinet assembly in the holes of the CD board.
X X
3.1.12 Removing the VFD board
(See Fig.29) UCW7
· Prior to performing the following procedures, remove the top
cabinet, CD changer mechanism assembly and front cabinet
assembly.
(1) From the inside of the front cabinet assembly, disconnect
the wire from the connector UCW05 on the VFD board.
(2) Remove the three screws X attaching the VFD board.
(3) Take out the VFD board while releasing the claw h in the
direction of the arrow.
(4) From the forward side of the VFD board, disconnect the Card wire
card wire from the connector UCW7. VFD board
Fig.29
(No.MB160)1-17
3.1.13 Removing the front board
(See Figs.30 and 31)
· Prior to performing the following procedures, remove the top
Front cabinet assembly
cabinet, CD changer mechanism assembly, front cabinet as-
sembly and VFD board.
(1) From the outside of the front cabinet assembly, pull out the
volume knob. (See Fig.30.)
(2) From the inside of the front cabinet assembly, remove the
thirteen screws Y attaching the front board. (See Fig.31.) Volume knob
(3) Take out the front board while releasing the claw i in the di-
rection of the arrow. (See Fig.31.)
(4) From the forward side of the front board, disconnect the
card wire from the connector UCW06. (See Fig.31.)
Reference:
When attaching the front board, align the projections (j, k) of
the front cabinet assembly in the holes of the front board.
Fig.30
Front cabinet assembly
Y
i
Y Y
j
UCW06
Cord wire k
Y Front board
Fig.31
1-18 (No.MB160)
3.1.14 Removing the AUX IN board
(See Fig.32)
· Prior to performing the following procedures, remove the top
Holder Holder
cabinet, CD changer mechanism assembly, front cabinet as-
sembly, VFD board and front board.
(1) From the inside of the front cabinet assembly, remove the
two screws Z attaching the holder.
(2) Take out the AUX IN board from the front cabinet assem-
bly.
3.1.15 Removing the phone board
(See Fig.32)
· Prior to performing the following procedures, remove the top
cabinet, CD changer mechanism assembly, front cabinet as-
Z AA
sembly, VFD board and front board.
(1) From the inside of the front cabinet assembly, remove the
two screws AA attaching the holder.
(2) Take out the phone board from the front cabinet assembly.
AUX IN board Phone board
Fig.32
3.1.16 Removing the cassette deck mechanism assembly
(See Fig.33)
· Prior to performing the following procedure, remove the top
Front cabinet assembly
cabinet, CD changer mechanism assembly and front cabinet
assembly.
(1) From the inside of the front cabinet assembly, disconnect Mechanism board
the card wire from the connector on the mechanism board. Connector Card wire
(2) Remove the five screws AB and screw AB' attaching the
cassette deck mechanism assembly.
Reference:
When attaching the screw AB', attach the earth wire with it.
AB
AB'
Earth wire
AB
Cassette deck mechanism assembly
Fig.33
(No.MB160)1-19
3.2 CD changer mechanism assembly section
· Prior to performing the following procedures, remove the CD changer mechanism assembly. (See "3.1.2 Removing the CD changer
mechanism assembly".)
3.2.1 Removing the tray disc
(See Figs.1 and 2)
(1) Turn the gear cam on the bottom side of the CD changer
Gear cam
mechanism assembly in the direction of the arrow and
draw the tray disc toward the front until it stops. (See Figs.1 CD sub board
Tray disc
and 2.)
(2) Disconnect the card wire from the connector CW103 on the
CD sub board. (See Figs.1 and 2.)
(3) Push down the two tray stoppers and pull out the tray disc.
(See Fig.2.)
CW103
Fig.1
Tray stopper
Tray disc
Tray stopper
CW103
(on the CD sub board)
Fig.2
1-20 (No.MB160)
3.2.2 Reinstall the tray disc
(See Figs.3 and 4)
(1) Align the gear cam with the gear tray and then mount the
Gear cam
tray disc. (See Fig.3.)
(2) When assembling the tray disc, take extreme care not en-
Gear convertor Gear tray
gage with gear synchro. (See Fig.4.)
Gear tray
Gear convertor Gear cam Gear tray
timing point
Fig.3
Gear synchro
Tray disc
Fig.4
(No.MB160)1-21
3.2.3 Removing the sensor board
(See Fig.5)
· Prior to performing the following procedures, remove the tray
Tray disc (reverse side)
disc.
(1) Remove the screw A attaching the sensor board on the
tray disc.
(2) Remove the sensor board releasing the two tabs a.
(3) Disconnect the wire from the connector CW1 on the sensor
board.
CW1
Tab a
Sensor board
A
Fig.5
3.2.4 Removing the loading motor
(See Figs.6 and 7)
· Prior to performing the following procedures, remove the tray
Tray roulette
disc and sensor board.
(1) Remove the screw B attaching the tray roulette and re-
move the tray roulette from the base tray. (See Fig.6.)
(2) Release the tabs b attaching the loading motor on the base
tray in the direction of the arrow and remove the loading
motor. (See Fig.7.)
Reference:
Base tray + Tray roulette = Tray disc
Base tray
B
Fig.6
Loading motor
Base tray (upper side)
Tabs b
Fig.7
1-22 (No.MB160)
3.2.5 Removing the belt load, CD sub board and switch board
(See Figs.8 and 9)
· Prior to performing the following procedures, remove the tray
Belt load
disc.
(1) Remove the belt load from the pulley on the top side of the
CD changer mechanism assembly. (See Fig.8.)
Note:
Do not strain the belt load with grease.
(2) Disconnect the card wire from the pickup unit connector on
the bottom side of the CD changer mechanism assembly.
(See Fig.9.)
Attention:
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 sol- CD changer mechanism assembly
der, the pickup unit might destroy.) (See Fig.9.) Fig.8
(3) Disconnect the wire from the connector on the CD mecha- CD sub board
nism board. (See Fig.9.)
(4) Remove the two screws C attaching the CD sub board.
(See Fig.9.) Tabs d
(5) Release the two tabs c and two tabs d attaching the motor D
and then remove the CD sub board. (See Fig.9.) Soldered parts
C
Reference: Tabs e
If the tabs c and d are hard to release, it is recommend- Motor
able to unsolder the two soldered parts on the motor ter- C
Tabs c
minal of the CD sub board.
Wire
(6) Remove the two screws D attaching the switch board and
take out the switch board while releasing the two tabs e at- Connector
taching the switch board outward. (See Fig.9.)
Switch board
CD mechanism
board
Card wire
Pickup unit connector
Card wire
Soldering
Pickup unit
connector
Fig.9
(No.MB160)1-23
3.2.6 Removing the CD mechanism holder assembly (mechanism included)
(See Figs.9 to 13)
(1) Disconnect the wire from the connector on the CD mecha-
Lift up slide shaft
nism board in the CD mechanism holder assembly on the
bottom side of the CD changer mechanism assembly. (See
Fig.10.)
Attention:
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 sol-
der, the pickup unit might destroy.) (See Fig.9.)
(2) Disconnect the card wire from the pickup unit connector.
(See Fig.10.)
(3) Remove the screw E attaching the shaft on the right side of
the CD mechanism holder assembly. (See fig.11.)
(4) 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. (See Figs.11 and 12.) CD mechanism holder assembly
(5) Turn the CD mechanism holder assembly half around the Fig.12
lift up slide shaft of the CD mechanism holder assembly un-
Lift up slide shaft
til the turntable is reversed, and pull out the CD mechanism
holder assembly. (See Figs.12 and 13.)
CD changer mechanism assembly
Wire
Connecter
CD mechanism holder assembly
Fig.13
Card wire
CD mechanism board
Pickup unit connecter
CD mechanism holder assembly
Fig.10
CD mechanism holder assembly
E
Stopper
Fig.11
1-24 (No.MB160)
3.3 CD mechanism section
· Prior to performing the following procedures, remove the CD mechanism holder assembly from the CD changer mechanism assem-
bly. (See "3.2.6 Removing the CD mechanism holder assembly".)
3.3.1 Removing the pickup unit
(See Fig.1)
(1) Remove the cut-washer on the feed gear sleeve and pull
Pickup unit Pickup shaft
out the feed gear.
(2) Remove the two screws A fixing the pickup shaft.
(3) Remove the pickup unit.
3.3.2 Removing the motor board
(See Fig.2.)
(1) Unsolder the motor terminal on the motor board.
(2) Remove the motor board.
A A
3.3.3 Removing the feed motor
(See Fig.1.)
· Prior to performing the following procedures, remove the CD
motor board. B
(1) Remove the two screws B and remove the feed motor.
(2) From the bottom side of the CD mechanism holder assem- Cut-washer
bly, take out the feed motor. Feed Gear
Feed motor
3.3.4 Removing the spindle motor Fig.1
(See Fig.2.) Motor board Unsolder Feed motor
Reference:
The spindle motor cannot be removed as a single unit.
When removing the spindle motor, change the chassis and
turntable together as a unit.
Spindle motor
Unsolder
Fig.2
(No.MB160)1-25
3.4 Cassette mechanism section
· Prior to performing the following procedures, remove the cassette deck mechanism assembly. (See "3.1.16 Removing the cassette
deck mechanism assembly".)
3.4.1 Removing the R/P head
(See Figs.1 and 2)
(1) Remove the screw A attaching the R/P head.
R/P Head
(2) Remove the screw B attaching the R/P head.
Note:
After attaching the R/P head, perform the electrical adjust-
ment. (See "ADJUSTMENT" section.)
3.4.2 Removing the erase head
(See Fig.1)
Remove the screw C attaching the erase head.
CB A
Erase head
Fig.1
A B
Spring
R/P Head
Fig.2
3.4.3 Removing the pinch roller
(See Fig.3)
(1) Pull out the pinch roller stopper.
Pinch roller stopper
(2) Pull out the pinch roller.
Pinch roller
Fig.3
1-26 (No.MB160)
3.4.4 Removing the motor
(See Figs.4 to 6)
(1) Slide the plastic cover in the direction of the arrow and re-
Plastic cover
move the three claws a to remove the plastic cover.
(2) Remove the two screws D fixing the motor.
D
Note:
Be careful to grease's splash when the drive belt comes
off.
(3) Unsolder the motor terminal.
3.4.5 Removing the mechanism board
(See Fig.5)
(1) Unsolder the four solder parts b and four solder parts c.
(2) Remove the two screws E attaching the mechanism board.
Claws a
Fig.4
Mechanism board
Motor terminal
Solder parts c
Solder parts b Solder parts c
E E
Motor
Drive belt Drive belt
Fig.5
Drive belt
Motor
Drive belt
Fig.6
(No.MB160)1-27
3.4.6 Removing the flywheel
(See Figs.7 to 9)
(1) Remove the cut-washer from the capstan shaft.
Capstan shaft
(2) Remove the flywheel from the back side of the cassette
deck mechanism assembly.
Reference:
When reassembling the flywheel, be sure to use the new
washers as they cannot be reused.
Cut-washer
Fig.7
Flywheel
FR belt
Fig.8
Washer
Cassette deck
Cut-washer mechanism assembly
(Front side)
Cassette deck
Washer mechanism assembly
(Back side)
Flywheel FR belt
Fig.9
1-28 (No.MB160)
3.5 Speaker section [MX-GB5]
3.5.1 Removing the side panel
(See Fig.1)
Remove the five screws A attaching the side panel and remove
the side panel. A
A
Side panel
A
Fig.1
3.5.2 Removing the sub woofer
(See Figs.2 and 3)
· Prior to performing the following procedures, remove the side
panel.
(1) Remove the four screws B attaching the sub woofer. (See
Fig.2.)
(2) Take out the sub woofer from the speaker main body and
disconnect the wires (red and red/black) from the speaker
terminal. (See Fig.3.)
B
Sub woofer
B
Fig.2
Red/Black wire Red wire
Speaker terminal