B ------------------------------ U.K.
E ---------- Continental Europe
EN ----------- Northern Europe
EV ------------- Eastern Europe
EE -------- Russian Federation
CA-UXGD7SP-UXGD7SP-UXGD7
Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
Dimensions (approx.)165 mm × 286 mm × 237 mm(W/H/D)
Mass (approx.)2.8 kg each
Design and specifications are subject to change without notice.
1-2 (No.MB422)
Page 4
SECTION 1
PRECAUTIONS
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.MB422)1-3
Page 5
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.MB422)
Page 6
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.
(No.MB422)1-5
Page 7
SECTION 3
DISASSEMBLY
3.1Disassembly of the main blocks of the set
Replacement of the fuses and the power IC.
3.1.1 Replacing the fuses
(See Fig. C)
• 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.
FUSE
(Location:F901)
Value: T1.25AL 250V
3.1.2 Replacing the power IC
(See Fig. D)
• Prior to performing the following procedure, remove the rear
cover.
(1) Remove the two screws H from the heat sink between the
power IC.
(2) Remove the solder fixing the power IC.
Fig.C
H
Fig.D
1-6 (No.MB422)
Page 8
3.2MAIN BODY
A
A
A
3.2.1 Removing the Metal Side Left and the Metal Side Right
(See Fig. 1-1, Fig. 1-2 and Fig. 1-3)
(1) Unscrew the 10 screws A from the Rear Panel, the Top
Cover and the Chassis Main.
(2) Remove the Metal Side Left and the Metal Side Right.
Fig.1-1
Fig.1-2
Fig.1-3
(No.MB422)1-7
Page 9
3.2.2 Removing the Top Cover
(See Fig. 2-1, Fig. 2-2 and Fig. 2-3)
(1) Unscrew the 2 Screws B and 2 Screws C.
(2) Removing the Top Cover.
B
Fig.2-1
B
C
Fig.2-2
Fig.2-3
1-8 (No.MB422)
Page 10
3.2.3 Removing the Cabinet Front
r
(See Fig. 3-1, Fig. 3-2, Fig. 3-3 and Fig. 3-4)
(1) Unscrew the 3 Screws D from the Chassis Main.
(2) Pulling out the 3 cable connectors from the Main Board unit
and the AMP Board unit then removing the Cabinet Front.
D
Fig.3-1
D
Fig.3-3
Connector
Fig.3-2
Connector
Connecto
Fig.3-4
D
(No.MB422)1-9
Page 11
3.2.4 Removing the Cover Heat Sink and the Fan
(See Fig.4-1, Fig.4-2 and Fig.4-3)
(1) Unscrew the 5 Screws E from the Chassis Main and the
Rear Panel.
(2) Pulling out the cable connector from the AMP Board then
removing the Cover Heat Sink and the Fan.
(3) Unscrew the 4 Screws M from the Fan.
(4) Removing the Fan.
E
E
E
E
E
Fig.4-1
CONNECTOR
1-10 (No.MB422)
Fig.4-2
M
Fig.4-3
Page 12
3.2.5 Removing the Rear Panel the Tuner and the Speaker Board
(See Fig.5-1, Fig.5-2 and Fig.5-3)
(1) Unscrew the 15 screws C from the Main Board unit, the
Tuner, the Heat Sink, the Chassis Main and the scart
Board unit.
(2) Pulling out the 2 cable connectors from the AMP Board unit
and the Power Board unit then removing the Panel Rear,
the Tuner and the Speaker Board.
C
C
Fig.5-1
CONNECTOR
Fig.5-2
Fig.5-3
CONNECTOR
(No.MB422)1-11
Page 13
3.3CABINET FRONTCHASSIS MAIN ASSEMBLY
3.3.1 Removing the Knob Volume, the Display Board and the USB Board
(See Fig.6-1 and Fig.6-2)
• Prior to performing the following procedure before removing
the Display Board.
(1) Pulling out the Knob Volume from the Display Board.
(2) Unscrew the 15 screws F from the Cabinet Front, then tak-
ing out the Display Board and the USB Board.
KNOB VOLUME
Fig.6-1
Fig.6-2
F
1-12 (No.MB422)
Page 14
3.3.2 Removing the Main Board and the Power Board
(See Fig.7-1, Fig.7-2, Fig.7-3 and Fig.7-4)
(1) Pulling out the 5 cable connectors from Main Board unit
and the Power Board unit.
(2) Unscrew the 4 screws G from the Mechanism Holder.
(3) Separating the Main Board and the Power Board from the
AMP Board vertically.
CONNECTOR
G
Fig.7-3
Fig.7-1
CONNECTOR
Fig.7-2
G
Fig.7-4
(No.MB422)1-13
Page 15
3.3.3 Removing the AMP Board and the Main Heat Sink
(See Fig.8-1 and Fig.8-2)
(1) Unscrew the 3 screws G and 1 screw C from the Mecha-
nism Holder, then removing the AMP Board.
(2) Unscrew the 2 screws H then removing the Main Heat Sink.
G
C
Fig.8-1
1-14 (No.MB422)
HH
Fig.8-2
Page 16
3.3.4 Removing the Mechanism Holder
(See Fig.9-1 and Fig.9-2)
(1) Unscrew the 4 screws I from the Mechanism Holder.
(2) Removing the Mechanism Holder.
II
Fig.9-1
II
Fig.9-2
(No.MB422)1-15
Page 17
3.3.5 Removing the DVD Mechanism
(See Fig.10-1, Fig.10-2 and Fig.10-3)
Caution:
The DVD Mechanism may be taken out only when the Rear
Panel, the Tuner, the Speaker
Board, the Main Board, the Power Board, the AMP Board, the
Mechanism Front Holder and the Mechanism Back Holder
have been taken away.
(1) Unscrew the 4 screws J from the Chassis Main.
(2) Separating the DVD Mechanism, the Mechanism Front
Holder and the Mechanism Back Holder from the Chassis
Main vertically.
(3) Unscrew the 4 screws K from the Mechanism, then remov-
ing the Mechanism Front Holder and the Mechanism Back
Holder.
JJ
Fig.10-1
K
K
JJ
3.3.6 Removing the Transformer
(See Fig.11)
(1) Unscrew the 4 screws L from the Chassis Main.
(2) Taking out the Bushing then removing the Silicon Steel
Sheet and the Transformer.
Fig.10-2
CD MECH Assembly
KK
Fig.10-3
1-16 (No.MB422)
L
LL
Fig.11
L
Page 18
SECTION 4
ADJUSTMENT
4.1Measurement instruments required for adjustment
(1) Low frequency oscillator.
This oscillator should have a capacity to output 0dB to
600Ω at an oscillation frequency of 50Hz-20kHz.
(2) Attenuator impedance : 600Ω
(3) Electronic voltmeter
(4) Frequency counter
(5) Wow flutter meter
(6) Test tape
VT712 : For Tape speed and wow flutter (3kHz)
VT703 : For Head angle (10kHz)
(7) Blank tape
TAPE l : AC-225 TAPE II : AC-514
(8) Torque gauge : For play and back tension forward:
TW2111A, Reverse: TW2121A Fast Forward and Rewind:
TW2231A
(9) Test disc: CTS-1000(12cm),GRG-1211(8cm)
(10) Jitter meter
4.2Measurement conditions
Power supply voltage :AC 230V (50Hz)
Measurement output
terminal
4.3Radio input signal
AM modulation frequency :400Hz
Modulation factor:30%
FM modulation frequency :1kHz
Frequency displacement :22.5kHz
:Speaker out
:TP101(Measuring for TUNER/DECK/CD)
:Dummy load 6Ω
4.4Frequency Range
AM 522kHz to 1629kHz
FM 87.5MHz to 108MHz
4.5Standard measurement positions of volume and
switch
Power:Standby (Light STANDBY Indicator)
Sound Turbo ll / BASS/ TREBLE OFF
AHB PRO:OFF
Main VOL.:0 Minimum
Travers mecha set position :Disc 1
4.6Precautions for measurement
(1) Apply 30pF and 33kΩ to the IF sweeper output side and
0.082 F and 100kΩ in series to the sweeper input side.
(2) The IF sweeper output level should be made as low as pos-
sible within the adjustable range.
(3) Since the IF sweeper is a fixed device, there is no need to
adjust this sweeper.
(4) Since a ceramic oscillator is used, there is no need to per-
form any MPX adjustment.
(5) Since a fixed coil is used, there is no need to adjust the FM
tracking.
(6) The input and output earth systems are separated.
In case of simultaneously measuring the voltage in both of
the input and output systems with an electronic voltmeter
for two channels, therefore, the earth should be connected
particularly.
(7) In the case of BTL connection amplifier, the minus terminal
of speaker is not for earthing. Therefore, be sure not to connect any other earth terminal to this terminal. This system
is of an OTL system.
SECTION 5
TROUBLESHOOTING
This service manual does not describe TROUBLESHOOTING.
(No.MB422)1-17
Page 19
Victor Company of Japan, Limited
AV & MULTIMEDIA COMPANY AUDIO/VIDEO SYSTEMS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan
(No.MB422)
Printed in Japan
VPT
Page 20
PARTS LIST
[ UX-GD7 ]
* All printed circuit boards and its assemblies are not available as service parts.
Area suffix
B ------------------------------- U.K.
E ----------- Continental Europe
EN ------------ Northern Europe
EV -------------- Eastern Europe
EE --------- Russian Federation
MB422
- Contents -
Exploded view of general assembly and parts list (Block No.M1)
Electrical parts list (Block No.01~05)
Packing materials and accessories parts list (Block No.M3)
28P for MAIN
CN501 to DVD
10P for MAIN
CN502 to DVD
11P fo r MA IN
CN401 to Tuner
20P for MAIN
CN601 to FRONT
CN801
Block No. [0][5]
L901BI2601102VLINE FILTERWIRE
CN901BI12S200691VCONNECTOR2P
CN902BI12S200691VCONNECTOR2P
3-11
Page 31
Packing materials and accessories parts list
No additional / supplemental order of WARRANTY CARDs are available.
P5
Block No.
M
3
M
M
P8
P11
A1 A2
A3
P4
A4 A5
A6
P12
P10
A7
P9
P13
P2
P3
P6
A8
P7
3-12
P1
Page 32
Packing and Accessories
Symbol No.Part No.Part NameDescriptionLocal
A 1BI440001541000INST BOOKENG LVT1348-003AB
A 1BI440001543000INST BOOKGER FRE DUT LVT1348-004AE
A 1BI440001579000INST BOOKRUS LVT1348-007AEE
A 1BI440001577000INST BOOKSWE FIN DAN GER FRE SPA ITA LVT1348-005A EN
A 1BI440001582000INST BOOKCZE POL HUN LVT1348-006AEV
A 2------------WARRANTY CARDBT-54027-1
A 3BI400083291001REGIST CARD
A 4------------BATTERY(x2)
A 5BIAN01031VAM LOOP ANT
A 6BIAN01022VFM ANT WIRE
A 7BI600GD702SV0REMOTE CONTROL
A 8BI644FSGD7202SSPEAKER BOX(x2)
P 1BI430001905000CARTONEE
P 1BI430001860000CARTONB,E,EN,EV
P 2BI420011041000CARTON SPACER
P 3BI420011042000CARTON SPACER
P 4BI470011031001POLY BAG
P 5BI470011057001POLY BAG
P 6BI450012010000POLY FOAMTop
P 7BI450012011000POLY FOAMBottom
P 8BI450012025000POLY FOAMFront
P 9BI450012026000POLY FOAMRear
P 10BI4005355POLY BAGfor Remote control
P 11BI450032001000PROTECT SHEET
P 12BI450011134001SHEET CROTH
P 13BI470011067001POLY BAGFOR AC CORD
Block No. [M][3][M][M]
3-13
Page 33
SCHEMATIC DIAGRAMS
MICRO COMPONENT SYSTEM
UX-GD7
CD-ROM No.SML200508
CA-UXGD7SP-UXGD7SP-UXGD7
Area suffix
B ------------------------------ U.K.
E ---------- Continental Europe
EN ----------- Northern Europe
EV ------------- Eastern Europe
EE -------- Russian Federation
Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
Contents
Block diagram
Standard schematic diagrams
Printed circuit boards
COPYRIGHT 2005 Victor Company of Japan, Limited.
2-1
2-2
2-8 to 11
No.MB422SCH
2005/8
Page 34
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.
Page 35
Block diagram
2-1
Page 36
Standard schematic diagrams
Power supply section
2-2
Parts are safety assurance parts.
When replacing those parts make
sure to use the specified one.
Page 37
Amp section
2-3
Page 38
Function section
2-4
Page 39
Video section
2-5
Page 40
Micon section
2-6
Page 41
Front section
2-7
Page 42
Printed circuit boards
Main board
Forward side
Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
2-8
Page 43
Main board
Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
Reverse side
2-9
Page 44
Amp board
Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
Forward sideReverse side
2-10
Page 45
Trans board
Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
2-11
Page 46
Victor Company of Japan, Limited
AV & MULTIMEDIA COMPANY AUDIO/VIDEO SYSTEMS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan
(No.MB422SCH)
Printed in Japan
VPT
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