Page 1
SERVICE MANUAL
MICRO COMPONENT SYSTEM
MB21020046
UX-H100
Area suffix
B ------------------------------ U.K.
E ---------- Continental Europe
EN ----------- Northern Europe
EV ------------- Eastern Europe
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19
COPYRIGHT © 2004 Victor Company of Japan, Limited
No.MB210
2004/6
Page 2
SPECIFICATION
Amplifier Section-CA-UXH100
Output Power 10 W per channel, min. RMS, driven into 6 Ω at 1 kHz, with no more than 10% total
harmonic distortion (IEC 268-3)
Speakers/Impedance 6 Ω - 16 Ω
Tuner FM tuning range 87.50 MHz-108.00 MHz
AM (MW) tuning range 522 kHz-1 629 kHz
CD player Dynamic range 85 dB
Signal-to-noise ratio 85 dB
Wow and flutter Immeasurable
Cassette deck Frequency response Normal (type I):100 Hz-10 000 Hz
Wow and flutter 0.35 % (WRMS)
General Power requirement AC 230 V , 50 Hz
Power consumption 38 W (at operation) 2 W (on standby)
Dimensions (W/H/D) (approx.) 144 mm × 255 mm × 277 mm
Mass (approx.) 2.9 kg
Speaker Section-SP-UXH100
Type Full range Bass-reflex type
Speakers 10 cm cone × 1
Power handling capacity 10 W
Impedance 6 Ω
Frequency range 100 Hz to 15 kHz
Dimensions (W/H/D) (approx.) 130 mm × 257 mm × 151 mm
Mass (approx.) 1.5 kg each
Designs & specifications are subject to change without notice.
1-2 (No.MB210)
Page 3
SECTION 1
PRECAUTION
1.1 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 manufacturers 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 reassembling.
(5) Leakage shock hazard testing
After reassembling 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, 1,000Ω per volt or more sensitivity
in the following manner. Connect a 1,500Ω 10W resistor
paralleled by a 0.15µF AC-type capacitor between an ex-
posed 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 measure 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.).
AC VOLTMETER
(Having 1000
ohms/volts,
or more sensitivity)
0.15 F AC TYPE
Place this
probe on
1500 10W
Good earth ground
1.2 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.
1.3 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.
1.4 Critical parts for safety
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.
(This regulation dose not Except the J and C version)
each exposed
metal part.
(No.MB210)1-3
Page 4
1.5 Safety Precautions (U.K only)
(1) This design of this product contains special hardware and many circuits and components specially for safety purposes. For con-
tinued 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.
(2) Any unauthorised design alterations or additions will void the manufacturer's guarantee; furthermore the manufacturer cannot
accept responsibility for personal injury or property damage resulting therefrom.
(3) Essential safety critical components are identified by ( ) on the Parts List and by shading on the schematics, and must never
be replaced by parts other than those listed in the manual. Please note however that many electrical and mechanical parts in
the product have special safety related characteristics. These characteristics are often not evident from visual inspection. Parts
other than specified by the manufacturer may not have the same safety characteristics as the recommended replacement parts
shown in the Parts List of the Service Manual and 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.
1.5.1 Warning
(1) Service should be performed by qualified personnel only.
(2) This equipment has been designed and manufactured to meet international safety standards.
(3) It is the legal responsibility of the repairer to ensure that these safety standards are maintained.
(4) Repairs must be made in accordance with the relevant safety standards.
(5) It is essential that safety critical components are replaced by approved parts.
(6) 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.
1-4 (No.MB210)
Page 5
1.6 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.
1.6.1 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.
1.7 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.
1.8 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.
CD changer
unit
Flexible cable
Soldering
(No.MB210)1-5
Page 6
1.9 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 CD,MD and DVD 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 performance of
procedures other than those specified here in may result in
hazardous radiation exposure.
Please use enough caution not to
see the beam directly or touch it
in case of an adjustment or operation
check.
REPRODUCTION AND POSITION OF LABELS
WARNING LABEL
CAUTION : Visible and Invisible
laser radiation when open and
interlock failed or defeated.
AVOID DIRECT EXPOSURE TO
BEAM. (e)
CLASS 1
LASER PRODUCT
ADVARSEL : Synlig og usynlig
laserstråling når maskinen er
åben eller interlocken fejeler.
Undgå direkte eksponering til
stråling. (d)
CAUTION : Visible and Invisible
laser radiation when open and
interlock failed or defeated.
AVOID DIRECT EXPOSURE TO
BEAM. (e)
VARNING : Synlig och
osynling laserstrålning när
den öppnas och spärren är
urkopplad. Betrakta ej
strålen. (s)
VARNING : Synlig och
osynling laserstrålning när
den öppnas och spärren är
urkopplad. Betrakta ej
strålen. (s)
VARO : Avattaessa ja suojalukitus
ohitettuna tai viallisena olet alttiina
näkyvälle ja näkymättömälle
lasersäteilylle. Vältä säteen
kohdistumista suoraan itseesi. (f)
ADVARSEL : Synlig og usynlig
laserstråling når maskinen er
åben eller interlocken fejeler.
Undgå direkte eksponering til
stråling. (d)
VARO : Avattaessa ja suojalukitus
ohitettuna tai viallisena olet alttiina
näkyvälle ja näkymättömälle
lasersäteilylle. Vältä säteen
kohdistumista suoraan itseesi. (f)
1-6 (No.MB210)
Page 7
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.
(No.MB210)1-7
Page 8
SECTION 3
DISASSEMBLY
3.1 Replacing the fuses (See Fig.1)
• Prior to performing the following procedure, remove the rear
cover.
(1) Replace the fuses inside.
Caution:
Be sure to use fuses with the specified ratings.
3.2 Replacing the power IC (See Fig.2)
• Prior to performing the following procedure, remove the rear
cover.
(1) Remove the two screws A from the heat sink between the
power IC.
(2) Remove the solder fixing the power IC.
Fuse (F901)
T315MAL 250V
Fig.1
Fig.2
A
1-8 (No.MB210)
Page 9
3.3 Removing the rear cover
r
(See Fig.3 and 4)
(1) Remove the seven screws C that retain the rear cover from
the back of the body.
(2) Remove the eight screws D that retain the rear cover from
the two sides of the body.
(3) Remove the rear cover from the body by pulling it toward
the back.
Caution:
The FM terminal wire (inside) must be pulled out, while removing the rear cover.
C
Rear cove
C
C
Fig.3
D
D
D
Fig.4
(No.MB210)1-9
Page 10
3.4 Removing the CD chassis assembly (See Fig.5 to 8)
• Prior to performing the following procedures, remove the rear
cover.
(1) Remove a screw E retaining the main board onto the CD
chassis.
(2) Disconnect the two FFC cables X1, X2 from the connectors
, CN703 on the CD board.
CN704
(3) Disengage the claws F on both sides of the body, while
moving the CD chassis assembly downward and backward.
(4) Before you take away the CD chassis assembly, you must
disconnect the wire from the connector CN204
board. (Fig.8)
Caution:
You must ensure that the two claws of the CD chassis's top G
are disengaged, while moving the CD chassis assembly.
on the main
EF
G
Fig.7
Cassette mechanism
X2
Fig.5
X1
Fig.8
Fig.6
1-10 (No.MB210)
Page 11
3.5 Removing the CD mechanism
Y
(See Fig.9 to 13)
• Prior to performing the following procedures, remove the rear
cover.
• Also remove the CD chassis assembly.
(1) Remove the three screws Y1 retaining the CD board.
(2) Disconnect the FFC cable Y2 from the connector CN701
(3) Disconnect the two parallel wires Y3 from the connector.
(4) Remove the four screws Y4 with washers retaining the CD
mechanism.
Y3
.
Fig.11
1
Fig.9
Y3
Y2
Fig.12
Y4
Fig.10
Fig.13
(No.MB210)1-11
Page 12
3.6 Removing the bottom base assembly (See Fig.14 to 18)
• Prior to performing the following procedures, remove the rear
cover.
• Also remove the CD chassis assembly.
(1) Remove the two screws H retaining the front panel assem-
bly.
(2) Disengage the wire Q that fix the cassette deck wire.
(3) Disconnect the cassette head wire Z1 and the cassette mo-
tor wire Z2 of power supply from the connectors CN202
, and then disconnect the AUX IN connecting wire
CN203
Z3 from the connector TP1.
(4) Disengage the claws I on both sides of the front cabinet as-
sembly and then move the bottom base assembly toward
the back.
Caution:
You must ensure that the 30 pin connector CN201
nected (See Fig.15).
is discon-
Q
,
H
Fig.16
Front panel
Circuit board
CN201
Fig.14
Fig.15
Z1
Z2
I
Fig.17
Z3
1-12 (No.MB210)
Fig.18
Page 13
3.7 Removing the main board (See Fig.19 to 20)
• Prior to performing the following procedures, remove the rear
cover.
• Also remove the CD chassis assembly.
• Also remove the bottom base assembly.
(1) Disengage the wire M and then disconnect the parallel wire
from the connectors CN902
(2) Removing the screw N retaining the main board onto the
bottom base.
(See Fig.20).
Main board
Bottom base
N
Fig.19
M
3.8 Replacing the 3-pin regulator (See Fig.21)
• Prior to performing the following procedures, remove the rear
cover.
• Also remove the CD chassis assembly.
• Also remove the main board assembly.
(1) Remove the two screws P retaining 3-pin regulator.
(2) Remove the solder fixing the 3-pin regulator Q216
, IC205.
Fig.20
P
Fig.21
(No.MB210)1-13
Page 14
3.9 Removing the cassette deck mechanism (See Fig.22 to 23)
• Prior to performing the following procedures, remove the rear
cover.
• Also remove the CD chassis assembly.
• Also remove the bottom base assembly.
(1) Remove the four screws J retaining the cassette deck
mechanism from the back of the front cabinet assembly.
Caution:
You must press the eject key before you remove the cassette
deck mechanism.
J
Fig.22
J
Fig.23
1-14 (No.MB210)
Page 15
3.10 Removing the display/control board assembly
y
(See Fig.24 to 25)
• Prior to performing the following procedures, remove the rear
cover.
• Also remove the CD chassis assembly.
(1) Remove the eleven screws K retaining the display/control
board assembly from the back of the front cabinet assembly.
Caution:
The display/control board may be taken out when the volume
knob has been taken away.
K
K
Fig.24
Front panel assembl
Volume knob
Fig.25
(No.MB210)1-15
Page 16
3.11 Removing the cassette deck main motor, and replacing the main belt (See Fig.26 to 27)
• Prior to performing the following procedures, remove the rear
cover.
• Also remove the CD chassis assembly.
• Also remove the bottom base assembly.
(1) Remove the four screws J retaining the cassette deck
mechanism. (See Fig.22)
(2) Remove the cassette deck mechanism.
(3) Remove the two screws L retaining the main motor from
the back side of the cassette deck and the top side of the
cassette deck.
Caution:
After attaching the main motor, check the orientation of
the motor and the polarity of the wires.
(4) Form the backside of the cassette deck, remove the main
motor and the main belt.
L
Fig.26
Fig.27
L
1-16 (No.MB210)
Page 17
3.12 Removing the cassette deck head (See Fig.28)
• Prior to performing the following procedures, remove the rear
cover.
• Also remove the CD chassis assembly.
• Also remove the bottom base assembly.
(1) Remove the four screws J that retain the cassette deck
mechanism. (See Fig.22)
(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 termi-
nal and disconnect the wire.
(4) Remove the screw U that retains the head.
(5) Remove the screw W that retains the head.
(6) Hold the head and slide it in the direction of the arrow to re-
move it.
W U
Fig.28
(No.MB210)1-17
Page 18
4.1 Arrangement of adjusting positions
SECTION 4
ADJUSTMENT
4.2 Tape recorder section
Items
Cassette Head
Azimuth
Alignments
Measurement
Test tape
: VT703 (10kHz)
Measurement
output terminal
: Left and Right
speaker output
(6-ohm loaded)
or
Headphone Output
(32-ohm loaded)
conditions
Cassette deck mechanism
Head azimuth screw
(Forward side)
Measurement method
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.
(Front side)
REC/PB Head
(Deck-B)
Head azimuth screw
(Reverse side)
Standard
values
Maximum
output
Adjusting
positions
Adjust the
head azimuth
screw only
when the head
has been
changed.
Recording Bias
Frequency
Alignment
4.3 Tuner section
Items
AM Tracking
Alignments
AM IFT
Alignments
Test tape
: TYPE I AC-514
Measurement
output terminal
: Erase head
terminal
(CN202 2 th Pin)
Measurement
conditions
Input signal
: 1629kHz
600kHz
Adjustment point
: Antenna coil (T2)
Input signal
: 522kHz
Adjustment point
: IFT (T101)
1.Insert the recording tape in deck-B.
2.Starting the recording.
3.Adjust the oscillation frequency to
82KHz+/-3KHz by core of Oscillation coil
of T201.
Measurement method
1.Set the Signal Generator signal to 1629KHz
the feedto Loop Antenna.
2.Receiving the signal and the adjust the OSC
coil (404) obtain the. VT is 4.7V +/-0.05V.
3.Change the receiving frequency to 603KHz.
4.Adjust the Antenna coil ( L102 ) obtain
maximum sensitivity
(Adjust the SSG output to out of AGC range.)
1.Set the receiving frequency to 522KHz.
2.Feed the 450KHz signal to AM antenna input.
3.Adjust the IFT BlockT1 obtain to maximum
output.
(Adjust the SSG output to out of AGC range.)
82kHz+/-3kHz
Standard
values
V.T
: 4.7V+/-0.05V
Maximum
sensitivity
Maximum
output
Use the HighImpedance
Probe or
Frequency
counter input.
Adjusting
positions
Adjust the OSC
coil only when
the AM coil block
has been
changed.
Adjust the IFT
only when the
IFT block has
been changed.
Note: The adjustment of CD section is not required.
1-18 (No.MB210)
Page 19
SECTION 5
TROUBLESHOOTING
This service manual does not describe TROUBLESHOOTING.
(No.MB210)1-19
Page 20
Victor Company of Japan, Limited
AV & MULTIMEDIA COMPANY AUDIO/VIDEO SYSTEMS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan
(No.MB210)
Printed in Japan
WPC
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