Cassette deckFrequency response Normal (type I)100 Hz-10 000 Hz
GeneralPower requirementAC 230 V , 50 Hz
Speaker Section
SP-UXG1
Output Power (IEC 268-3)10 W (5 W + 5 W) at 4 Ω (10% THD)
Speakers/Impedance4 Ω - 16 Ω
AM (MW) tuning range522 kHz-1 629 kHz
Signal-to-noise ratio85 dB
Wow and flutterImmeasurable
Wow and flutter0.35 % (WRMS)
Power consumption22 W (at operation)
3.0 W (on standby)
Dimensions (W/H/D) (approx.)145 mm × 209 mm × 226 mm
Mass (approx.)2.8 kg
TypeFull range Bass-reflex type
Speakers10 cm cone × 1
Power handling capacity5 W
Impedance4 Ω
Frequency range100 Hz to 15 kHz
Dimensions (W/H/D) (approx.)135 mm × 209 mm × 152 mm
Mass (approx.)1.3 kg each
Design and specifications are subject to change without notice.
1-2 (No.MB359)
Page 3
SECTION 1
PRECAUTION
1.1Safety 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, 1,000
in the following manner. Connect a 1,500
paralleled by a 0.15
exposed metal part and a known good earth ground.
Measure the AC voltage across the resistor with the AC
Ω per volt or more sensitivity
Ω 10W resistor
µF AC-type capacitor between an
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
1.2Warning
(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.
1.3Caution
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.
1.4Critical 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.MB359)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.MB359)
Page 5
1.6Preventing 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.
1.7Handling 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.
1.8Attention 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 pickup board
Short-circuit point
Card wire
(No.MB359)1-5
Page 6
1.9Important 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.MB359)
Page 7
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.
(No.MB359)1-7
Page 8
SECTION 3
DISASSEMBLY
3.1Main body
3.1.1 Removing the Rear cover assembly
(See Fig.1 to 5)
(1) Remove the two screws A , the two screws B and the tow
screws C on the back of the body.
(2) Remove the four screws D on each side of the body.
(3) Remove the two screws E on the bottom of the body.
(4) Move the front panel assembly in the direction of the arrow
and remove. Disconnect the wire from connector CN901
on the transformer board.
Caution:
When reassembling, set the tab a on the right and left side to
the groove, and move.
CD mechanism assembly
A
Front panel assembly
E
Fig.3
CD mechanism assembly
Fig.1
Front panel assembly
D
B
C
Joint a
Front panel
assembly
Joint a
Rear cover assembly
Fig.4
Rear cover assembly
Front panel assembly
CN901
1-8 (No.MB359)
Fig.2
Fig.5
Page 9
3.1.2 Removing the Main board
(See Fig.6 , 7)
• Prior to performing the following procedure, remove the rear
cover assembly.
(1) Disconnect the wire from all connectors on the main board.
(2) Cut off the band setting the wire.
(3) Remove the two screws F and release the joint b.
Front panel
assembly
CN401
CN301
Band
CN370
CN402
CN260
CD mechanism
assembly
CN850
CN851
Joint b
CD mechanism
assembly
CN801
Main board
Fig.6
Front panel assembly
F
Main board
Fig.7
(No.MB359)1-9
Page 10
3.1.3 Removing the CD mechanism assembly and the Switch board
(See Fig.8 to 10)
• Prior to performing the following procedure, remove the rear
cover assembly and the main board.
(1) Cut off the four bands setting the wires.
(2) Disconnect the wire from connector on the CD open switch
and CN603
(3) Remove the two screws G on the front panel assembly.
(4) Release the joint d of the CD mechanism assembly.
(5) Remove the five screws H attaching the switch board to the
CD mechanism assembly.
(6) Unsolder the switch board, if necessary.
, CN606 on the CD mechanism board.
Front panel
assembly
Band
G
Open switch
connecter
Band
CD mechanism
assembly
CN603
CN606
G
Joint d
Front panel assembly
Fig.8
Fig.9
Band
CD mechanism
assembly
Front panel
assembly
1-10 (No.MB359)
H
H
Fig.10
Solder point
Switch board
CD mechanism
assembly
Page 11
3.1.4 Removing the CD mechanism board, CD mechanism
(See Fig.11 to 14)
• Prior to performing the following procedure, remove the rear
cover assembly, the main board and the CD mechanism assembly.
Caution:
Make sure to solder the short-circuit point on the CD pickup
board before disconnecting the card wire from connector
on the CD mechanism board and from the CD pickup
CN601
board. If you do not follow this instruction, the pickup may be
damaged.
(1) Remove the four screws J on the CD mechanism assem-
bly.
(2) Disconnect the wire from connector of the CD motor board.
(3) Solder the short-circuit point on the CD pickup board, and
disconnect the wire from the CD pickup board.
Caution:
To reattach the CD mechanism board, connect the card
wire to connector CN601
and to the CD pickup board, then unsolder the short-circuit point.
(4) Remove the screw K attaching the wire on the CD mecha-
nism board.
Caution:
The metal washer and nut come off.
(5) Remove the four screws L attaching the CD mechanism.
on the CD mechanism board
Short-circuit point
CD pickup board
Card wire
Fig.12
CD mechanism assembly
Front panel
CD mechanism
board
Switch board
JJ
Connecter
CD mechanism
assembly
Fig.11
CD motor board
Connecter
CD mechanism
assembly
LL
Nut
CD mechanism board
K
Fig.13
CD mechanism
Fig.14
(No.MB359)1-11
Page 12
3.1.5 Removing the Headphone board
(See Fig.15)
• Prior to performing the following procedure, remove the rear
cover assembly, the main board and the CD mechanism assembly.
(1) Remove the screw M on the bracket and pull out the head-
phone board.
3.1.6 Removing the LCD board
(See Fig.16)
• Prior to performing the following procedure, remove the rear
cover assembly, the main board and the CD mechanism assembly.
(1) Remove the ten screws N and the two screws P on the
Front panel assembly.
CD mechanism
assembly
Switch board
Head phones
board
Head phones
bracket
M
Fig.15
N
3.1.7 Removing the Cassette mechanism
(See Fig.17)
• Prior to performing the following procedure, remove the rear
cover assembly and the main board.
(1) Remove the four screws Q on the front panel assembly and
press the eject button on the front side to remove the cassette mechanism assembly.
N
N
Front panel
assembly
P
LCD board
Fig.16
1-12 (No.MB359)
QQ
Cassette mechanism
assembly.
Fig.17
Page 13
3.1.8 Removing the transformer board
(See Fig.18 to 20)
• Prior to performing the following procedure, remove the rear
cover assembly.
(1) From the rear cover assembly, remove the screw R attach-
ing the transformer board support.
(2) Remove the four screws S attaching the transformer.
(3) Remove the two screws T setting the power cord.
(4) Remove the transformer board and the transformer from
the rear panel assembly in the direction of the arrow.
(5) From the transformer board, remove the screw U attaching
the transformer board support.
(6) Remove the tap attaching the transformer board cover.
(7) Unsolder the eight points on the wire on the transformer as-
sembly.
3.1.9 Removing the transformer
(See Fig. 18 to 20)
• Prior to performing the following procedure, remove the rear
cover assembly.
(1) From the rear cover assembly, remove the screw R attach-
ing the transformer board support.
(2) Remove the four screws S attaching the transformer.
(3) Remove the two screws T setting the power cord.
(4) Remove the transformer board and the transformer from
the rear panel assembly in the direction of the arrow.
(5) From the transformer board, remove the screw U attaching
the transformer board support.
(6) Remove the tap attaching the transformer board cover.
(7) Unsolder the six points on the wire extending from the
transformer.
T
Transformer
Transformer board support
R
R
S
S
Fig.18
Solder point
Solder point
Solder
point
Transformer board
Fig.19
Transformer board cover
U
Solder point
Ta p
Transformer board
Solder point
Fig.20
(No.MB359)1-13
Page 14
SECTION 4
ADJUSTMENT
4.1Measuring instructions required for adjustment
• AM signal generator
• FM signal generator
• Inter medicate frequency sweep generator
• FM stereo signal generator
• Low-frequensy oscillator (osillation frequency 50 Hz - 20 kHz, 0 dB output with 600 Ω impedance)
ItemMeasuring conditionCheck and adjustment procedureStandard valueAdjusting part
Head azimuth
adjustment
Tape speed
and
wow/flutter
check and
adjustment
PB frequency
responce
check
Bias frequency
check
REC and PB
frequency
responce
adjustment
Test tape : VT703
Signal output terminal :
PHONES
(with 32 ohm load)
Test tape : VT712
Signal output terminal :
PHONES
(with 32 ohm load)
Test tape : VT738
Signal output terminal :
PHONES
(with 32 ohm load)
Test tape : normal
Signal output terminal :
Casssette R/P head
Test tape : AC225
Signal input : FM 22.5
dev, 60dBu with
emphasis
Signal output terminal :
PHONES
(with 32 ohm load)
4.7Tuner section
1.Plyback the test tape VT703.
2.Adjust the head azimuth adjusting screw
so that the phase difference between the
R and L channels is minimized at an
output level that is within +/- 2dB of the
maximum output level.
After this adjustment, lock the head
azimuth adjusting screw with screw
sealant to cover more than a half of the
screw head.
3.When the head azimuth is maladjusted,
correct it with the head azimuth adjusting
screw.
1.Plyback the test tape VT712 by the end
of position.
2.Connect a frequency counter and check
that it reads between 2940 and 3090 Hz.
If not, adjust the frequenct with the motor
semifixed resistor.
3.Check that the wow / flutter is 0.38%
(unweighted).
Playback the test tape VT738 while confirming that deviation between the 1 kHz
signal and 8 kHz signal should be
0 (+3 to -6) dB.
Set the TUNER or CD function and with
TAPE to record. Check to see if the
frequency at the measuring point (R335 or
R336) is 60 kHz +/-1 kHz if not adjust T360
until the frequency counter indicates
60 kHz +/- 1 kHz.
At TUNER, set the BAND to the FM
position, and record the reference 1 kHz
signal and 8 kHz signal altemately
repeatedly. While playing back the
recorded signal differ from that of the 1 kHz
signal by within 0 (+3 to 6) dB.
Output level :
within +/-2dB
of maximum
output level
Phase defference
L and R channels:
minimum
2940 to 3090 Hz
within 0.38%
(unweighted)
deviation between
1 kHz and 8 kHz :
0 (+3 to -6) dB.
Level difference
between REC and
PB : within 0
(+3 to 6) dB
Head azimuth
adjusting screw
(to be used only
after head replacement)
Tape speed :
motor semifixed
resistor
check only
L203
ItemMeasuring conditionCheck and adjustment procedureStandard valueAdjusting part
AM IF
adjustment
AM tracking
adjustment
Tuner 114 kHz
filter the waves
adjustment
Signal input : Loop
antenna
Signal output : IC201
pin 18
Signal input : Loop
antenna
Signal output : PHONES
(with 32 ohm load)
Signal input : IC101
pin 19
Signal output : IC101
pin 18
1.Set the intermediate frequency sweep
generator to AM 450 kHz.
2.Adjust the T203 from maximum and
center output.
1.Set the TUNER at 522 kHz adjust T201
until the test pin of R245 voltage at
1.55 V +/- 0.1 V.
2.Set the TUNER at 1629 kHz, check the
pin of R245 voltage at 8.4 V +/- 6V.
3.Set the TUNER ang S/G at 612 kHz,
adjust T202 for maximum output.
4.Set the TUNER and S/G at 1404 kHz,
adjust T201 for maximum output.
5.Repwat the above step 3 and 4.
1.Set the unit in standby mode. Input 114
kHz signal to IC101 pin 19.
2.Adjust the T204 for output voltage
minimum.
T203
T201
R245
TC201
T204
(No.MB359)1-15
Page 16
4.8Location of adjusting parts
Cassette mechanism section
Main board assembly
(AM RF)
T202
Tape speed adj.
(AM IF)
T203
-
+
CASSETTE
MOTOR
TC201
R245
(AM VT)
(AM RF)
T201
(AM OSC)
T204
(114 kHz)
1-16 (No.MB359)
T360
(BIAS FREQUENCY)
Page 17
SECTION 5
TROUBLESHOOTING
This service manual does not describe TROUBLESHOOTING.
(No.MB359)1-17
Page 18
Victor Company of Japan, Limited
AV & MULTIMEDIA COMPANY AUDIO/VIDEO SYSTEMS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan
(No.MB359)
Printed in Japan
VPT
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