Page 1
SERVICE MANUAL
COLOUR TELEVISION
YA00720039
AV-29FT1BUG,
AV-29FT1SUG
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LIMITED
No.YA007
2003/9
Page 2
SPECIFICATION
Items
Dimensions ( W × H × D ) 81.2cm × 60.1cm × 52.2cm
Mass 43kg
TV RF System CCIR (B/G, D/K, I , L/L')
Colour System PAL / SECAM / NTSC (Only in EXT mode)
Stereo System A2 (B/G, D/K) / NICAM (B/G, I, D/K, L)
Teletext System Fastext (UK system)
TOP (German system)
WST(World standard system)
Receiving
Frequency
Intermediate
Frequency
Colour Sub
Carrier Frequency
Power Input AC220V ~ AC240V, 50Hz
Power Consumption 72W, standby : 3W
Aerial Input Terminal 75Ω unbalanced, coaxial
Picture Tube Visible size : 68cm (Measured diagonally)
Audio Power Output 7W + 7W
EXT-1 / EXT-2 (Input / Output) 21-pin Euro connector (SCART socket × 2)
EXT-3 (Input) Video 1V(p-p) 75Ω (RCA pin jack × 1)
Headphone Jack Stereo mini jack (Ø3.5mm) × 1
Remote Control Unit RM-C1514B (AAA/R03 dry battery × 2) RM-C1514 (AAA/R03 dry battery × 2)
VHF 47MHz ~ 470MHz
UHF 470MHz ~ 862MHz
French CATV 116MHz ~ 172MHz / 220MHz ~ 469MHz
VIF Carrier 38.9MHz (B/G, D/K, I , L) / 33.95MHz (L')
SIF Carrier 33.4MHz (5.5MHz:B/G)
/ 32.9MHz (6.0MHz:I)
/ 32.4MHz (6.5MHz:L, D/K)
/ 40.45MHz (6.5MHz:L')
PAL 4.43MHz
SECAM 4.40625MHz / 4.25MHz
NTSC 3.58MHz / 4.43MHz
Audio (L/R) 500mV(rms) (-4dBs), High impedance (RCA pin jack × 2)
AV-29FT1BUG AV-29FT1SUG
Contents
Design & specifications are subject to change without notice.
1-2 (No.YA007)
Page 3
SECTION 1
PRECAUTION
1.1 SAFETY PRECAUTIONS
(1) The design of this product contains special hardware,
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. Service should be
performed by qualified personnel only.
(2) Alterations of the design or circuitry of the products should
not be made. Any design alterations or additions will void
the manufacturer's warranty and will further relieve the
manufacturer 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 Service
manual. The use of a substitute replacement which does
not have the same safety characteristics as the
recommended replacement part shown in the parts list of
Service manual may cause shock, fire, or other hazards.
(4) Don't short between the LIVE side ground and
ISOLATED (NEUTRAL) side ground or EARTH side
ground when repairing.
Some model's power circuit is partly different in the GND.
The difference of the GND is shown by the LIVE : ( ) side
GND, the ISOLATED (NEUTRAL) : ( ) side GND and
EARTH : ( ) side GND.
Don't short between the LIVE side GND and ISOLATED
(NEUTRAL) side GND or EARTH side GND and never
measure the LIVE side GND and ISOLATED (NEUTRAL)
side GND or EARTH side GND at the same time with a
measuring apparatus (oscilloscope etc.). If above note will
not be kept, a fuse or any parts will be broken.
(5) If any repair has been made to the chassis, it is
recommended that the B1 setting should be checked or
adjusted (See B1 POWER SUPPLY check).
(6) The high voltage appli ed to the picture tube must confo rm
with that specified in Service manual. Excessive high
voltage can cause an increase in X-Ray emission, arcing
and possible component damage, therefore operation
under excessive high voltage conditions should be kept to
a minimum, or should be prevented. If severe arcing
occurs, remove the AC power immediately and determine
the cause by visual inspection (incorrect installation,
cracked or melted high voltage harness, poor soldering,
etc.). To maintain the proper minimum level of soft X-Ray
emission, components in the high voltage circuitry
including the picture tube must be the exact replacements
or alternatives approved by the manufacturer of the
complete product.
(7) Do not check high voltage by d rawing an arc. Use a high
voltage meter or a high voltage probe with a VTVM.
Discharge the picture tube before attempting meter
connection, by connecting a clip lead to the gr ound frame
and connecting the other end of the lead through a 10kΩ
2W resistor to the anode button.
(8) When service is required, obse rve the original lead dress.
Extra precaution should be given to assure correct lead
dress in the high voltage circuit area. Where a short circuit
has occurred, those components that indicate evidence of
overheating should be replaced. Always use the
manufacturer's replacement components.
(9) Isolation Check (Safety for Electrical Shock Hazard)
After re-assembling the product, always perform an
isolation check on the exposed metal parts of the cabinet
(antenna terminals, video/audio input and output terminals,
Control knobs, metal cabinet, screw heads, earphone jack,
control shafts, etc.) to be sure the product is safe to operate
without danger of electrical shock.
a) Dielectric Strength Test
The isolation between the AC primary circuit and all metal
parts exposed to the user, particularly any exposed metal
part having a return path to the chassis should withstand a
voltage of 3000V AC (r.m.s.) for a period of one second. (.
. . . Withstand a voltage of 1100V AC (r.m.s.) to an
appliance rated up to 120V, and 3000V AC (r.m.s.) to an
appliance rated 200V or more, for a period of one second.)
This method of test requires a test equipment not generally
found in the service trade.
b) Leakage Current Chec k
Plug the AC line cord directly into the AC outlet (do not use
a line isolation transformer during this check.). Using a
"Leakage Current Tester", measure the leakage current
from each exposed metal part of the cabinet, particularly
any exposed metal part having a return path to the chassis,
to a known good earth ground (water pipe, etc.). Any
leakage current must not exceed 0.5mA AC (r.m.s.).
However, in tropical area, this must not exceed 0.2mA AC
(r.m.s.).
Alternate Check Method
Plug the AC line cord directly into the AC outlet (do not
use a line isolation transformer during this check.). Use
an AC voltmeter having 1000Ω per volt or more
sensitivity in the following manner. Connect a 1500Ω
10W resistor paralleled by a 0.15µF AC-type capacitor
between an exposed metal part and a known good earth
ground (water pipe, etc.). 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 ac ross the
resistor. Now, reverse the plug in the AC outlet and
repeat each measurement. Any voltage measured must
not exceed 0.75V AC (r.m.s.). This corresponds to
0.5mA AC (r.m.s.).
However, in tropical area, this must not exceed 0.3V AC
(r.m.s.). This corresponds to 0.2mA AC (r.m.s.).
AC VOLTMETER
(HAVING 1000 /V,
OR MORE SENSITIVITY)
0.15 F AC-TYPE
PLACE THIS PROBE
1500 10W
GOOD EARTH GROUND
ON EACH EXPOSED
METAL PART
(No.YA007)1-3
Page 4
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
2.1 21-pin Euro connector (SCART) : EXT-1/EXT-2 Pin No. Signal designation Matching value EXT-1 EXT-2
1 AUDIO R output 500mV(rms) (Nominal), Low impedance Used (TV OUT) Used (LINE OUT)
2 AUDIO R input 500mV(rms) (Nominal), High impedance Used (R1) Used (R2)
3 AUDIO L output 500mV(rms) (Nominal), Low impedance Used (TV OUT) Used (LINE OUT)
4 AUDIO GND --- Used Used
5 GND (B) --- Used Used
6 AUDIO L input 500mV(rms) (Nominal), High impedance Used (L1) Used (L2)
7 B input 700mV
8 FUNCTION SW (SLOW SW) Low : 0V-3V, High : 8V-12V, High impedance Used Used
9 GND (G) --- Used NC
10 SCL / T-V LINK --- Not used NC
11 G input 700mV(B-W), 75 Ω Used NC
12 SDA --- Not used NC
13 GND (R) --- Used Used
14 GND (YS) --- Used Used
15 R / C input R : 700mV
C : 300mV
16 Ys input (FAST SW) Low : 0V-0.4V, High : 1V-3V, 75 Ω Used NC
17 GND (VIDEO output) --- Used Used
18 GND (VIDEO input) --- Used Used
19 VIDEO output 1V
20 VIDEO / Y input 1V
(P-P)
(P-P)
21 COMMON GND --- Used Used
, 75 Ω Used NC
(B-W)
(B-W)
(P-P)
, 75 Ω
, 75 Ω
Used (R) Used (C)
(Negative sync), 75 Ω Used (TV OUT) Used (LINE OUT)
(Negative sync), 75 Ω Used Used
(P-P= Peak to Peak, B-W= Blanking to white peak)
[Pin assignment]
20 18 16 14 12 10 8 6 4 2
21 19 17 15 13 11 9 7 5 3 1
1-4 (No.YA007)
Page 5
SECTION 3
DISASSEMBLY
3.1 DISASSEMBLY PROCEDURE
3.1.1 REMOVING THE REAR COVER
(1) Unplug the power cord.
(2) Remove the 8 screws [A].
(3) Remove the 1 screw [B].
(4) Withdraw the REAR COVER toward you.
3.1.2 REMOVING THE SIDE SPEAKER
• Remove the REAR COVER.
(1) Remove the 4 screws [C], attaching the SPEAKER.
(2) Follow the same steps when removing the other hand
SPEAKER.
3.1.3 REMOVING THE MAIN PWB
• Remove the REAR COVER.
(1) Slightly raise the both sides of th e MAIN PWB by hand and
withdraw the MAIN PWB backward.
(If necessary, take off the wire clamp, connectors etc.)
3.1.4 CHECKING THE PW BOARD
• To check the back side of the PW Board.
(1) Pull out the MAIN PWB. (Refer to REMOVING THE MAIN
PWB).
(2) Erect the MAIN PWB vertically so that you can easily check
the back side of the PW Board.
3.1.5 CAUTION
• When erecting the MAIN PWB, be careful so that there will be
no contacting with other PW Board.
• Before turning on power, make sure that the wire connector is
properly connected.
• When conducting a check with power supplied, be sure to confirm that the CRT EARTH WIRE (BRAIDED ASS'Y) is connected to the CRT SOCKET PW board.
3.1.6 WIRE CLAMPING AND CABLE TYING
(1) Be sure to clamp the wire.
(2) Never remove the cable tie used for tying the wires
together.
Should it be inadvertently removed, be sure to tie the wires
with a new cable tie.
SPEAKER
FRONT CABINET
C
SPEAKER
CRT SOCKET
PWB
MAIN PWB
C
FBT
POWER CORD
REAR COVER
B
A
(No.YA007)1-5
Page 6
3.2 REPLACEMENT OF MEMORY IC
3.2.1 MEMORY IC
This TV use memory IC. In the memory IC, there are memorized data for correctly operating th e video and deflection circuits. Wh en
replacing memory IC with a blanking memory IC, the set is automatically memorized following SERVICE MANU initial data.
3.2.2 SERVICE MENU ADJUSTMENT ITEMS
There are 22 SERVICE ADJUSTMENT ITEMS. After replacing
memory IC, automatically memorized following initial data.
No. Adjustment item
1 PARABOLA
2HOR WIDTH
3 CORNER
4 HOR PARAL
5 V. LINEAR
6 EW TRAPEZ
7 S CORRECT
8H BOW
9 VERT SIZE
10 VERT CENT
11 RED GAIN
12 GRN GAIN
13 BLUE GAIN
14 RED BIAS
15 GRN BIAS
16 HOR CEN
17 AGC LEVEL
18 G2-SCREEN
19 AFT
20 OPTION1
21 OPTION2
22 MAX VOL
3.2.3 FACTORY SETTING
3.2.3.1 FRONT BUTTON SETTING AND INITIAL SEETING
Item Value
MAIN POWER OFF(SUB POWER ON)
PR POSITION 01
INPUT MODE TV
3.2.3.2 USER MENU SETTING
Item Value
PICTURE
BRIGHTNESS Center
CONTRAST Center
COLOUR Center
SHARPNESS Center
SOUND
VOLUME 18
BASS Center
TREBLE Center
BALANCE Center
FEATURES
LANGUAGE GB
CHILD LOCK OFF
CLOCK --:-WAKE TIME OFF
WAKE PR 01
NOISE RED. ON
INSTALL
ATSS GB
EDIT
SYSTEM GB
CHANNEL C 38
FREQUENCY 607. 25
NAME ----PROGRAM 05
STORE TO 05
1-6 (No.YA007)
Page 7
3.3 REPLACEMENT OF CHIP COMPONENT
3.3.1 CAUTIONS
(1) Avoid heating for more than 3 seconds.
(2) Do not rub the electrodes and th e resist parts of the pattern.
(3) When removing a chip part, melt the solder adequately.
(4) Do not reuse a chip part after removing it.
3.3.2 SOLDERING IRON
(1) Use a high insulation soldering iron with a thin pointed end of it.
(2) A 30w soldering iron is recommended for easil y removing parts.
3.3.3 REPLACEMENT STEPS
1. How to remove Chip parts
2. How to install Chip parts
[Resistors, capacitors, etc.]
(1) As shown in the figu re, push the part with tweezers and
alternately melt the solder at each end.
(2) Shift with the tweezers and remove the chip part.
[Transistors, diodes, variable resistors, etc.]
(1) Apply extra solder to each lead.
SOLDER
SOLDER
[Resistors, capacitors, etc.]
(1) Apply solder to the pattern as indicated in the figure.
(2) Grasp the chip part with tweezers and place it on the
solder. Then heat and melt the solder at both ends of the
chip part.
[Transistors, diodes, variable resistors, etc.]
(1) Apply solder to the pattern as indicated in the figure.
(2) Grasp the chip part with tweezers and place it on the
solder.
(3) First solder lead A as indicated in the figure.
(2) As shown in the figu re, push the part with tweezers and
alternately melt the solder at each lead. Shift and remove
the chip part.
NOTE :
After removing the part, remove remaining solder from the
pattern.
A
B
C
(4) Then solder leads B and C.
A
B
C
(No.YA007)1-7
Page 8
SECTION 4
ADJUSTMENT
4.1 ADJUSTMENT PREPARATION
(1) There are 2 ways of adjusting this TV : One is with the REMOTE C ONTROL UNIT and the other i s the conventional method
using adjustment parts and components.
(2) Make sure that connection is correctly made AC to AC power source.
(3) Turn on the power of the TV and measuring instruments for warning up for at least 30 minutes before starting adjustments.
(4) If the receive or input signal is not specified, use the most appropriate signal for adjustment.
(5) Never touch the parts (such as variable resistors, transformers and condensers) not shown in the adjustment items of this service
adjustment.
4.2 MEASURING INSTRUMENT AND FIXTURES
(1) DC voltmeter (or digital voltmeter)
(2) Signal generator (Pattern generator : PAL / SECAM / NTSC)
(3) Remote control unit.
4.3 BASIC OPERATION OF SERVICE MENU
4.3.1 TOOL OF SERVICE MENU OPERATION
Operate the SERVICE MENU with the REMOTE CONTROL UNIT.
4.3.2 SERVICE ADJUSTMENT ITEMS
There are 22 adjustment items.
No. Adjustment item No. Adjustment item
1 PARABOLA 12 GRN GAIN
2 HOR WIDTH 13 BLUE GAIN
3 CORNER 14 RED BIAS
4 HOR PARAL 15 GRN BIAS
5 V. LINEAR 16 HOR CEN
6 EW TRAPEZ 17 AGC LEVEL
7 S CORRECT 18 G2-SCREEN
8H BOW 19AFT
9 VERT SIZE 20 OPTION1
10 VERT CENT 21 OPTION2
11 RED GAIN 22 MAX VOL
4.3.3 HOW TO ENTER SERVICE MENU
(1) Press [ i ](Information) key and [ ](Muting) key same time
then enter SERVICE MENU.
4.3.4 SELECTION OF MENU SCREEN
(1) Press [] / [] keys of the REMOTE CONTROL UNIT and
select adjustment item.
SERVICE Ver0.67 : 20/05/03
+00360
GRN GAIN
Setting item
Setting value
SERVICE MENU SCREEN
Muting key
132
465
798
0
ZOOM
PICTURE/OK
P
To Enter
Information
MENUAV
P
?
DVD
VCR
key
RM-C1514
TV
/
(Select item)
MENU
(To exit)
/
(Setting data)
4.3.5 SETTING VALUE OF ADJUSTMENT ITEMS
(1) Press [] / [] keys of the REMOTE CONTROL UNIT and
setting value of adjustment items.
4.3.6 HOW TO EXIT SERVICE MENU
(1) Press [MENU] key, then exit SERVICE MENU.
1-8 (No.YA007)
REMOTE CONTROL UNIT
Page 9
4.4 ADJUSTMENT PROCEDURE
4.4.1 AGC
Item
AGC
adjustment
Measuring
instrument
Signal
generator
Remote
control unit
Test point Adjustme nt par t Description
AGC
(1) Receive a colour bar pattern signal.
(2) Select < AGC >.
AGC VR : (RB10)
[MAIN PWB]
(3) Adjust the AGC VR (RB10) to bring the cursor to
central position : 32.
I501
I101
RB10
I601
I702
TUNER
4.4.2 FOCUS ADJUSTMENT
Item
FOCUS
adjustment
Measuring
instrument
Signal
generator
Remote
control unit
SERVICE VO. 31A TPU19
+00057 AGC LEVEL
MAIN PWB
FBT
Test point Adjustme nt par t Description
FOCUS VR
[On FBT]
(1) Receive a cross-hatch signal.
(2) Adjust the FOCUS volume on the FBT to have the
best resolution on the screen.
Cursor
FBT
FOCUS
SCREEN
(No.YA007)1-9
Page 10
4.4.3 SCREEN ADJUSTMENT
Item
SCREEN
adjustment
4.4.4 WHITE BALANCE ADJUSTMENT
Item
WHITE
BALANCE
adjustment
4.4.5 DEFLECTION CIRCUIT ADJUSTMENT
Measuring
instrument
Signal
generator
Remote
control unit
Measuring
instrument
Signal
generator
Remote
control unit
Test point Adjustment part Description
Test point Adjustment part Description
G2-SCREEN
SCREEN VR
[On FBT]
RED BIAS
GRN BIAS
RED GAIN
GRN GAIN
BLUE GAIN
(1) Receive a colour bar pattern signal.
(2) Select < G2-SCREEN >.
(3) Adjust the SCREEN VR on the FBT to bring the
cursor to central position.
(1) Receive a black and white pattern signal (colour off).
(2) Select < RED BIAS >, < GRN BIAS > and adjust the
screen until the black portion in the screen becomes
black.
(3) Select < RED GAIN >, < GRN GAIN >, < BLUE GAIN >
and adjust the screen until the white portion in the
screen become white.
Item
VERTICAL
GEOMETORY
adjustment
HORIZONTAL
POSITION
adjustment
Measuring
instrument
Signal
generator
Remote
control unit
Signal
generator
Remote
control unit
Test point Adjustment part Description
V. LINEAR
S CORRECT
VERT SIZE
VERT CENT
HOR CEN (1) Receive a circle pattern signal.
(1) Receive a circle pattern signal.
(2) Select < V. LINEAR >(Veretical linearity), < S
CORRECT > (S correction), < VERT SIZE >(Vertical
size), < VERT CENT >(Vertical center) respectively.
(3) Adjust to compensate for vertical distortion.
(2) Select < HOR CEN >(Horizontal center).
(3) Adjust to have the picture in the center of the screen.
1-10 (No.YA007)
Page 11
Item
HORIZONTAL
GEOMETORY
adjustment
Measuring
instrument
Signal
generator
Remote
control unit
Test point Adjustme nt par t Description
PARABOLA
HOR WIDTH
CORNER
HOR PARAL
EW TRAPEZ
H BOW
(1) Receive a cross-hatch pattern signal.
(2) Select < PALABOLA >(Side pin), < HOR WIDTH >
(Horizontal width), < CORNER >(Top/bottom
corner), < HOR PARAL >(Horizontal parallel), < EW
TRAPEZ >(Trapezium), < H BOW > (Horizontal
bow).
(3) Adjust these items to compensate for geometrical
distortion.
PARABOLA
HOR WIDTH
CORNER
HOR PARAL
EW TRAPEZ
H BOW
(No.YA007)1-11
Page 12
SECTION 5
TROUBLESHOOTING
This service manual does not describe TROUBLESHOOTING.
1-12 (No.YA007)
Page 13
VICTOR COMPANY OF JAPAN, LIMITED
AV & MULTIMEDIA COMPANY VIDEO DISPLAY CATEGORY 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan
(No.YA007)
Printed in Japan
WPC
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