JVC AV-29VT11/P User manual

SERVICE MANUAL
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD. No.52195
2003/10
FLAT COLOR TELEVISION
AV-29VT11 / P
AV-29VT31 /P
AV-29VT11 /T
TABLE OF CONTENTS
1 PRECAUTION ......................................................................................................................................................... 1-3
2 SPECIFIC SERVICE INSTRUCTIONS ..................................................................................................................... 1-4
3 DISASSEMBLY ....................................................................................................................................................... 1-7
4 ADJUSTMENT ...................................................................................................................................................... 1-14
5 TROUBLESHOOTING ........................................................................................................................................... 1-31
RM-C1330-1H
[AV-29VT31
/P ]
RM-C1331-1H
[AV-29VT11 /P ]
[AV-29VT11
/T ]
MUTING
OFF
TIMER
ECO
SENSOR
PICTURE
MODE
CHANNEL
SCAN
MENU
CHANNEL
RETURN+
POWER
DISPLAY
TV/VIDEO
VOLUME
123
456
789
0
CINEMA
SURROUND
COLOR
SYSTEM
CLOSED
CAPTION
100+
TV
RM-C1331
FAVORITE CH
MUTING
OFF
TIMER
ECO
SENSOR
PICTURE
MODE
CHANNEL
SCAN
MENU
CHANNEL
RETURN+
POWER
DISPLAY
TV/VIDEO
VOLUME
123
456
789
0
CINEMA
SURROUND
COLOR
SYSTEM BASS
CLOSED
CAPTION
100+
TV
RM-C1330
FAVORITE CH
BASIC CHASSIS
CH3

1-2 (No. 52195)
Design & specifications are subject to change without notice.
Dimentions (W x H x D)
Mass
TV RF System
Color System TV Mode
Video Mode
Stereo System
Receiving Frequency VHF Low
VHF High
UHF
CATV
Intermediate Frequency VIF
SIF
Color Sub Carrier Frequency
Aerial Input Terminal
Power Input
Power Consumption
Picture Tube
High Voltage
Speaker
Audio Output
Video / Audio Input S-Video (1)
(1/2/3)
Video (1/2/3)
Audio (1/2/3)
Component (2)
Video / Audio Output Video
Audio
Headphone
Remote Control Unit
SPECIFICATION
Items Contents
AV-29VT11/P AV-29VT31/P AV-29VT11/T
81.2cm x 58.4cm x 52.1cm
43.5kg 43.5kg 43.5kg
2.4kg (Bass Blaster Unit)
M
NTSC3.58
NTSC3.58 / NTSC4.43 / PAL
MTS (Multi-Channel Television Sound)
46.25 MHz ~ 140.25MHz (AS0 ~ S6)
147.25MHz ~ 423.25MHz (S7 ~ S36)
431.25MHz ~ 863.25MHz (S37 ~ CHINA57)
Mid : X ~ Z, S1 ~ S10
Super : S11 ~ S20
Hyper : S21 ~ S41
38.0MHz
33.5MHz(4.5MHz)
3.58MHz/4.43MHz(NTSC), 4.43MHz(PAL)
75 Ω unbalanced
AC110V ~ AC240V, 50Hz/60Hz
190W(Max.)/145W(Avg.) 212W(Max.)/145W(Avg.) 190W(Max.)/145W(Avg.)
Vi sible size: 67.6cm (Diagonal) / 54.1cm x 40.6cm (H x V)
32kV -1.5kV / +1.0kV (at zero beam current)
6.5cm x 13cm, Oval t ype x 2 6.5cm x 13cm, Oval type x 2 6.5cm x 13cm, Oval type x 2
Ø 13cm (Bass Blaster Unit)
10W + 10W 7W + 7W +13W 10W + 10W
Mini-DIN 4pin x 1
Y : 1V(p-p), positive (negative sync provided), 75 Ω
C : 0.286V(p-p) (Burst signal), 75 Ω
1V(p-p), negative sync, 75 Ω , RCA pin jack x 3
500mV(rms) (-4dBs), high impedance, RCA pin jack x 6
RCA pin jack x 3
Y : 1V(p-p), positive (negative sync), 75 Ω
C B /C R : 0.7V(p-p), 75 Ω
1V(p-p), 75 Ω , RCA pin jack x 1
500mV(rms) (-4dBs), Low inpedance (400Hz when modulated 100%), RCA pin jack x 2
3.5mm stereo mini jack x 1
RM-C1331-1H RM-C1330-1H RM-C1331-1H
(AA/R06/UM-3 battery x 2) (AA/R06/UM-3 battery x 2) (AA/R06/UM-3 battery x 2)

(No. 52195) 1-3
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 ADJUSTMENT OF B1 POWER SUPPLY).
(6) The high voltage applied to the picture tube must conform
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 drawing 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 ground frame
and connecting the other end of the lead through a 10kΩ
2W resistor to the anode button.
(8) When service is required, observe 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 Check
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 1000 ohms per volt or
more sensitivity in the following manner. Connect a
1500Ω10W 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 across
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 1000Ω/V,
OR MORE SENSITIVITY)
PLACE THIS PROBE
ON EACH EXPOSED
METAL PART
1500Ω10W
0.15µF AC-TYPE
GOOD EARTH GROUND
SECTION 1
PRECAUTION

1-4 (No. 52195)
2.1 FEATURES
•New chassis design enables use of an interactive on-screen control.
•Pure flat CRT produces fine textured picture in every detail.
•Wide range voltage (110V ~ 240V) for AC power input.
•With AUDIO/VIDEO/S-VIDEO/COMPONENT input terminals.
•I 2C bus control utilizes single chip ICs.
•By means of AUTO PROGRAM, the TV stations can be selected automatically and the TV channels can also be rearranged
automatically.
•Built-in DIGITAL ECO MODE (ECONOMY, ECOLOGY).
In accordance with the brightness in a room, the brightness and/or contrast of the picture can be adjusted automatically to
make the optimum picture which is easy on the eye.
•Built-in OFF TIMER & RETURN +.
2.2 MAIN DIFFERENCE LIST
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
!Items AV-29VT11/P AV-29VT31/P AV-29VT11/T
!MAIN PWB ASS’Y SCH-1176A-H2 SCH-1178A-H2 SCH-1177A-H2
!CRT SOCKET PWB ASS’Y SCH-3006A-H2 ←SCH-3009A-H2
BASS BLASTER None BASS BLASTER UNIT None
AUDIO OUTPUT 10W + 10W 7W + 7W + 13W 10W + 10W
REMOTE CONTROL UNIT RM-C1331-1H RM-C1330-1H RM-C1331-1H
QMPR380-165-K2 QMPR520-170-JC
!POWER CORD ←
POWER CONSUMPTION 190W(Max.) / 145W(Avg.) 212W(Max.) / 145W(Avg.) 190W(Max.) / 145W(Avg.)

(No. 52195) 1-5
2.3 FUNCTIONS
!REMOTE CONTROL UNIT
RM-C1331-1H [AV-29VT11/P, AV-29VT11/T]
1
2
3
4
5
6
7
8
9
10
11
12
MUTING key
COLOR SYSTEM key
DISPLAY key
MENU (/, /) keys
CLOSED CAPTION key
TV/VIDEO key
OFF TIMER key
PICTURE MODE key
CHANNEL SCAN key
RETURN + key
CHANNEL (-/+) keys
FAVORITE CH keys
13
14
15
16
17
18
POWER key
CINEMA SURROUND key
ECO SENSOR key
Number keys
100+ key
VOLUME (-/+) keys
MUTING
OFF
TIMER
ECO
SENSOR
PICTURE
MODE
CHANNEL
SCAN
MENU
CHANNEL
RETURN+
POWER
DISPLAY
TV/VIDEO
VOLUME
123
456
789
0
CINEMA
SURROUND
COLOR
SYSTEM
CLOSED
CAPTION
100+
TV
RM-C1331
FAVORITE CH
3
2
1
4
5
6
7
8
9
11
10
12
13
14
15
16
17
18
RM-C1330-1H [AV-29VT31/P]
1
2
3
4
5
6
7
8
9
10
11
12
13
14
MUTING key
COLOR SYSTEM key
BASS key
DISPLAY key
MENU (/, /) keys
CLOSED CAPTION key
TV/VIDEO key
OFF TIMER key
PICTURE MODE key
CHANNEL SCAN key
RETERN + key
CHANNEL (-/+) keys
FAVORITE CH keys
15
16
17
18
19
POWER key
CINEMA SURROUND key
ECO SENSOR key
Number keys
100+ key
VOLUME (-/+) keys
MUTING
OFF
TIMER
ECO
SENSOR
PICTURE
MODE
CHANNEL
SCAN
MENU
CHANNEL
RETURN+
POWER
DISPLAY
TV/VIDEO
VOLUME
123
456
789
0
CINEMA
SURROUND
COLOR
SYSTEM BASS
CLOSED
CAPTION
100+
TV
RM-C1330
FAVORITE CH
3
2
1
5
4
8
6
7
9
10
12
11
13
14
15
16
17
18
19

1-6 (No. 52195)
!FRONT PANEL CONTROLS
4
3
2
156 7 8910 11 12
1
2
3
4
5
6
7
8
9
10
11
12
HEADPHONE jack
IN (VIDEO-3) : VIDEO
IN (VIDEO-3) : AUDIO L/MONO
IN (VIDEO-3) : AUDIO R
MENU () button
CHANNEL (-/+) buttons
VOLUME (-/+) buttons
TV/VIDEO buttons
Remote control sensor
ECO sensor
POWER lamp
MAIN POWER button
BASS
BASS
SPEAKER
SPEAKER
OUT
OUT
2
3
4
VIDEO-1 INPUT TERMINAL
VIDEO
AUDIO L/MONO
AUDIO R
S-VIDEO
15
6
7
8
9
COMPONENT (VIDEO-2) INPUT TERMINAL
Y/VIDEO
C
B
C R
AUDIO L/MONO
AUDIO R
13 Antenna socket
10
11
12
OUTPUT TERMINAL
VIDEO
AUDIO L
AUDIO R
7
4
3
212 13
1
9
5 6 10 118
14 BASS SPEAKER OUT
[AV-29VT11/P,AV-29VT11/T] [AV-29VT31/P]
7
4
3
2
12 13
1
9
5 6 10 118
14
!REAR TERMINAL

(No. 52195) 1-7
3.1 DISASSEMBLY PROCEDURE
3.1.1 REMOVING THE TWIN PORT BASS BLASTER UNIT
[AV-29VT31/P]
•Unplug the power supply cord.
(1) Disconnect the TWIN PORT BASS BLASTER UNIT's
cord from the rear of the TV set.
(2) Remove the TWIN PORT BASS BLASTER UNIT by
pulling it upwards.
NOTE:
After removing the TWIN PORT BASS BLASTER UNIT,
proceed to the following procedure.
3.1.2 REMOVING THE REAR COVER
•Unplug the power cord.
(1) Remove the 16 screws [A] as shown in Fig.1.
(2) Withdraw the REAR COVER toward you.
CAUTION:
When reinstalling the rear cover, carefully push it inward
after inserting the MAIN PWB into the REAR COVER groove.
3.1.3 REMOVING THE CHASSIS (CHASSIS BASE AND
CONTROL BASE)
•Remove the REAR COVER.
(1) Slightly raise the both sides of the CHASSIS by hand
and remove the 2 claws [B] under the CHASSIS from
the front cabinet as shown in Fig.1.
(2) Withdraw the CHASSIS backward.
(If necessary, take off the wire clamp, connector's etc.)
NOTE:
When conducting a check with power supplied, be sure to
confirm that the CRT earth wire is connected to the CRT
SOCKET PWB and the MAIN PWB.
3.1.4 REMOVING THE AV TERMINAL BOARD
•Remove the REAR COVER.
(1) Remove the 4 screws [C] as shown in Fig.1.
(2) When you pull out the AV TERMINAL BOARD in the
direction of arrow [D] as shown in Fig.1, it can be
removed.
3.1.5 REMOVING THE CONTROL BASE
•Remove the REAR COVER.
•Remove the CHASSIS.
(1) While pushing down the 2 claws [E] as shown in Fig.
2 and pull out the CONTROL BASE in the direction of
arrow [F] as shown in Fig. 2, the control base can be
removed.
(If necessary, take off the wire, connector's etc.)
3.1.6 REMOVINGTHESPEAKER
•Remove the REAR COVER.
(1) Remove the 2 screws [G] as shown in Fig.1.
(2) Withdraw the SPEAKER backward.
(3) Follow the same steps when removing the other hand
SPEAKER.
3.1.7 CHECKING THE MAIN PW BOARD
•To check the back side of the MAIN PWB.
(1) Pull out the CHASSIS. (Refer to REMOVING THE
CHASSIS).
(2) Erect the CHASSIS vertically so that you can easily
check the back side of the MAIN PWB.
CAUTIONS:
•When erecting the chassis, be careful so that there will be
no contacting with other PW Board.
•Before turning on power, make sure that the CRT earth
wire and other connectors are properly connected.
•When repairing, connect the DEG. COIL to the DEG.
connector on the MAIN PWB.
3.1.8 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.
SECTION 3
DISASSEMBLY

1-8 (No. 52195)
Fig.2
Fig.2
Fig. 1
CLAW B
CLAW B
(under side)
(under side)
(X2)
G
SPEAKER
(X2)
G
SPEAKER
CRT
SOCKET PWB
FRONT CONTROL
PWB (1/2)
FRONT CONTROL PWB (2/2)
MAIN PWB
CHASSIS
BASE
CONTROL BASE
(×4)
PICTURE TUBE
D
C
AV TERMINAL
BOARD
FRONT CABINET
CHASSIS
BASE
CONTROL BASE
[FRONT SIDE]
E
F
REAR COVER
BASS SPEAKER OUT JACK
[AV-29VT31/P]
TWIN PORT
BASS BLASTER UNIT
[AV-29VT31/P]
(×16)
A

(No. 52195) 1-9
3.2 REPLACEMENT OF MEMORY IC
3.2.1 MEMORY IC
This TV uses the following memory IC.
Memory IC: IC1702 on MAIN PW Board
The memory IC memorizes data for correctly operating the
video and deflection circuits. When replacing the memory
IC, be sure to use the same type IC written with the initial
values of data. In other words, use the specific IC listed in
“PRINTED WIRING BOARD PARTS LIST”. For its mounting
location, refer to “ADJUSTMENT LOCATIONS”.
3.2.2 PROCEDURE FOR REPLACING MEMORY IC
1. Power off
Switch the power off and unplug the power cord from
the wall outlet.
2. Replacing the memory IC
Replace the memory IC with new one. Be sure to use
the memory IC written with the initial data values.
3. Power on
Plug the power cord into the wall outlet and switch the
power on.
4. Check and setting of SYSTEM CONSTANT SET:
(1) Press the [DISPLAY] key and the [PICTURE MODE]
key on the remote control unit simultaneously.
The SERVICE MENU screen will be displayed.(See
Fig.1.)
(2) In the SERVICE MENU, press the [DISPLAY] key and
[PICTURE MODE] key simultaneously. Then, the
SYSTEM CONSTANT SET screen will be
displayed.(See Fig.2.)
(3) Check whether the setting values of the SYSTEM
CONSTANT SET are the same as those indicated
in Table1.
If the value is different, select the setting item with
the MENU [!]/["] key, and set the correct value
with the MENU
[#] / [$] key.
(4) Press the [DISPLAY] key twice to return to the normal
screen.
5. Receive channel setting
Refer to the OPERATING INSTRUCTIONS and set the
receive channels (channels preset).
6. User setting
Check the user setting values in Table 2 and Table 3. If
setting value is different, set the correct value.
For setting, refer to the OPERATING INSTRUCTIONS.
7. Setting of SERVICE MENU
Verify the setting for each setting item in the SERVICE
MENU.(See Table 4.) If readjustment is necessary,
perform adjustment referring to “ADJUSTMENTS
PROCEDURE”.
1. IF
3. DEF
5. PRESET 6. AUDIO
7. PLUG & PLAY (ON)
2. VC
4. VSM PRESET
SERVICE MENU
1-7 : SELECT DISPLAY : EXIT
SERVICE MENU
******* **** ***** *****
**** **** *** ***
Fig. 1
MENU
MENU
MENU
DISPLAY
MENU 
PICTURE
MODE
NAME OF REMOTE CONTROL KEYS
SYSTEM CONSTANT-1
: SEL - + : OPE
COMB
TILT
NTSC
YES
NTSC
SUPER BASS NO
LANGUAGE E/S/P
SYSTEM CONSTANT SET 1
COLOR SYSTEM
DISP : EXIT
SYSTEM CONSTANT-2
: SEL - + : OPE
B / B SOUND
YES
NO
TUNER MU
COLOR AUTO NO
SYSTEM CONSTANT SET 2
MSP
DISP : EXIT
SYSTEM CONSTANT-3
: SEL - + : OPE
: 001
: 002
SYSTEM CONSTANT SET 3
LOCK LONG WAIT
SHORT WAIT
: YES
3D SURROUND
: NO
AMP TUNER
DISP : EXIT
SYSTEM CONSTANT-4
: SEL - + : OPE
SYSTEM CONSTANT SET 4
YESCOMPONENT
YES16 : 9
YESM.L. delete
DISP : EXIT
Fig. 2

1-10 (No. 52195)
3.2.3 FACTORY SETTING VALUE
COLOR SYSTEM NTSC ←
COMB NTSC ←
TILT YES ←
SUPER BASS NO NO
LANGUAGE E/S/P E
MSP YES ←
B/B SOUND NO ←
TUNER MU ←
COLOR AUTO NO ←
LOCK LONG WAIT 001 ←
SHORT WAIT 002 ←
3D SURROUND YES ←
AMP TUNER NO ←
COMPONENT YES ←
16 : 9 YES ←
M.L. delete YES ←
←
←
←
YES
←
←
←
←
←
←
←
←
←
←
←
←
Table 1
SETTING OF SYSTEM CONSTANT SET
Setting item Setting content Setting value
AV-29VT31/PAV-29VT11/P AV-29VT11/T
NTSC NO
YES NO
YES NO
000 255
000 255
YES NO
YES NO
YES NO
MU MA
YES NO
YES NO
YES NO
YES NO
YES NO
TRIPLE NTSC
E/S/P E

(No. 52195) 1-11
Setting item Setting value
POWER Off
SUB POWER On
VOLUME 15
COLOR SYSTEM NTSC
SOUND SYSTEM M
PICTURE MODE (VSM) BRIGHT
CINEMA SURROUND OFF
SUPER BASS ON [AV-29VT31/P]
CLOSED CAPTION OFF (CC1/T1)
OFF TIMER 00
CHANNEL POSITION CH-02
%SETTING OF SWITCHES ON FRONT PANEL AND REMOTE CONTROL UNIT
Setting item Setting value
INPUT TV
VNR OFF
COMPRESS (16:9) OFF
PICTURE TILT 00
AUTO SHUTOFF OFF
CHILD LOCK OFF
BLUE BACK ON
VIDEO-2 SET VIDEO
AUTO CH PRESET Refer to OPERATING INSTRUCTIONS
MANUAL CH PRESET Refer to OPERATING INSTRUCTIONS
LANGUAGE ENG
TINT Center
COLOR Center
BRIGHT Center
PICTURE Maximum
DETAIL Center
BASS Center
TREBLE Center
BALANCE Center
AI VOLUME ON
FAVORITE CH RED PR1
FAVORITE CH GREEN PR2
FAVORITE CH YELLOW PR3
FAVORITE CH BLUE PR4
AI ECO SENSOR OFF
AI ECO DISPLAY ON
%SETTING OF MENU SCREEN
Table 2
Table 3

1-12 (No. 52195)
1. IF 1. VCO
2. DELAY POINT
2. VC 1. CUTOFF(R/G)
2. DRIVE(R/G/B)
3. BRIGHT
4. PICTURE
5. COLOR
6. TINT
7. DETAIL
8. YDELAY [Do not adjust]
9.
AMP T. SHARP
3. DEF 1. VER. SLOPE
2. VER. HEIGHT
3. VER. POSITION
4. VER. SCURVE
5. HOR. POSITION
6. HOR. WIDTH
7. EW-PIN
8. EW-TRAPEZ
9. UP CORNER
10. DW CORNER
11. HOR. PARALL
12. HOR. BOW
13. V. ZOOM
4. VSM PRESET 1. TINT
(BRIGHT/STANDARD/SOFT) 2. COLOR
[Do not adjust] 3. BRIGHT
4. PICTURE
5. DETAIL
Service menu Setting item
%SERVICE MENU SETTING ITEMS
Service menu Setting item
5. PRESET 1. PSNS
[Do not adjust] 2. ACL
3. MUS
4. MAT
5. FCO
6. BPS
7. IFLH
8. VID
9. STM
10. AFCW
11. VSW
12. FFI
13. AGC
14. CL
15. AKB
16. HBL
17. BKS
18. READ STATUS
19. VNR
20. PEAK
21. IVG
22. WPL
23. SOFT CLIPPER
24. IF PLL OFFSET
25. OVERSHOOT
26. HCO
27. HP2
28. AI VOLUME ADN
29. SUB BASS
30. SUB TREBLE
31. SUB TRIMMER
31. CCC LOOP
32. OSD BRIGHTNESS
6. AUDIO 1. STATUS
[Do not adjust] 2. STANDARD SELECTION
3. FM PRESCALE
7. PLUG & PLAY (ON)
[Do not adjust]
Table 4

(No. 52195) 1-13
2. How to install Chip parts
[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.
(4) Then solder leads B and C.
3.3.3 REPLACEMENT STEPS
1. How to remove Chip parts
[Resistors, capacitors, etc.]
(1) As shown in the figure, push the part with tweezers and
alternately melt the solder at each end.
(2) Shift with tweezers and remove the chip part.
[Transistors, diodes, variable resistors, etc.]
(1) Apply extra solder to each lead.
(2) As shown in the figure, 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.
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 the 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 easily removing parts.
SOLDER SOLDER
A
B
C
A
B
C

1-14 (No. 52195)
4.1 ADJUSTMENTPREPARATION
(1) You can make the necessary adjustments for this unit with either the remote control unit or with the adjustment
equipment and parts as given below.
(2) Adjustment with the remote control unit is made on the basis of the initial setting values, however, the new setting
values which set the screen to its optimum condition may differ from the initial settings.
(3) Make sure that AC power is turned on correctly.
(4) Turn on the power for the set and test equipment before use, and start the adjustment procedures after waiting at least 30
minutes.
(5) Unless otherwise specified, prepare the most suitable reception or input signal for adjustment.
(6) Never touch any adjustment parts, which are not specified in the list for this variable resistors, transformers, trimmer
capacitors, etc.
(7) Presetting before adjustment.
Unless otherwise specified in the adjustment instructions, preset the following functions with the remote control unit.
Setting item Setting value
PICTURE MODE (VSM) BRIGHT
TINT, COLOR, BRIGHT, DETAIL Center
PICTURE Maximum
VNR OFF
AI ECO SENSOR OFF
BASS, TREBLE, BALANCE Center
4.2 MEASURING INSTRUMENT AND FIXTURES
(1) DC voltmeter (or Digital voltmeter)
(2) Oscilloscope
(3) Signal generator (Pattern generator) [PAL/SECAM/NTSC]
(4) Remote control unit
4.3 ADJUSTMENT ITEMS
!B1 POWER SUPPLY
!FOCUS ADJUSTMENT
!IF CIRCUIT ADJUSTMENTS
•IF VCO adjustment
•DELAY POINT (AGC TAKE-OVER) adjustment
!VIDEO CIRCUIT ADJUSTMENTS
•WHITE BALANCE (Low light) adjustment
•WHITE BALANCE (High light) adjustment
•SUB BRIGHT adjustment
•SUB CONTRAST adjustment
•SUB COLOR 1 adjustment
•SUB COLOR 2 adjustment
•SUB TINT 1 adjustment
•SUB TINT 2 adjustment
!User mode setting position
!DEFLECTION CIRCUIT ADJUSTMENTS
•V.SLOPE adjustment
•V.POSITION adjustment
•V.HEIGHT adjustment
•H.POSITION adjustment
•H. WIDTH adjustment
•SIDE PIN adjustment
•TRAPEZIUM adjustment
•V.S-CURVE adjustment
•CORNER adjustment
•H. PARALLEL adjustment
•H.BOW adjustment
!VSM PRESET SETTING
!PRESET SETTING
!AUDIO SETTEING
SECTION 4
ADJUSTMENT

(No. 52195) 1-15
4.4 ADJUSTMENT LOCATIONS
E1
TOP
CRT EARTH
(BRAIDED ASS'Y)
CRT EARTH
(BRAIDED ASS'Y)
U
TP-47B
TP-47G
E3
HV
61
GND B1
UPPER : FOCUS
IC702
CRT SOCKET PWB ASS’Y
(SOLDER SIDE)
T
61
16
FRONT
FRONT
FRONT
HVT
MAIN PWB ASS’Y
FRONT CONTROL PWB ASS’Y (1/2) FRONT CONTROL PWB ASS’Y (2/2)
J304 J303 J302
S804
S805
S806 S802
S803S801 J801
CN003
CN002
A
CN001
CN002
PW
POWER
SW.
W
A
R
S901
S801 : CH UP +
S802 : CH DOWN –
S803 : MENU
S804 : TV/VIDEO
S805 : VOL UP+
S806 : VOL DOWN –
1
1
6
16
5
S
U
LOWER : SCREEN
TU001
J804J801J805 J802 J803
IC701
Z
CN001
W
T
DEG
TP-E

1-16 (No. 52195)
4.5 BASIC OPERATION IN SERVICE MENU
4.5.1 TOOL OF SERVICE MENU OPERATIO
N
Operate the SERVICE MENU with the remote control unit.
4.5.2 SERVICE MENU ITEMS
With the SERVICE MENU,various settings (adjustments) can be made,and they are broadly classified in the following items
of settings:
4.5.3 BASIC OPERATION IN SERVICE MENU
1. HOW TO ENTER SERVICE MENU
Press the [DISPLAY] key and the [PICTURE MODE] key on the remote control unit simultaneously.
The SERVICE MENU screen will be displayed. (See Fig. 1 on the next page.)
2. SELECTION OF SUB MENU SCREEN
Press one of the keys 1 to 6 on the remote control unit,and select the SUB MENU SCREEN from the SERVICE MENU. (See
Fig.1 on the next page.)
SERVICE MENU → SUB MENU
1. IF
2. VC
3. DEF
4. VSM PRESET
5. PRESET
6. AUDIO
7. PLUG & PLAY (ON)
3. METHOD OF SETTING
NOTES:
•Once the setting values are set, they are memorized automatically.
•It must not adjust without inputting a signal.
(1) 1. IF
[1.VCO ] : Under normal conditions, no adjustment is required.
[2.DELAY POINT ]
(2) 2. VC, 3. DEF, 4. VSM PRESET, 5. PRESET and 6. AUDIO
(3) 7. PLUG & PLAY (ON)
This is not used for service.
4. Release of SERVICE MENU
After completing the setting, return to the SERVICE MENU by pressing the [DISPLAY] key, then again press the [DISPLAY]
key to return to the normal screen.
1. IF For entering/adjusting the setting values (adjustment values) of the IF circuit.
2. VC For entering/adjusting the setting values (adjustment values) of the VIDEO circuit.
3. DEF For entering/adjusting the setting values (adjustment values) of the DEFLECTION circuit.
4. VSM PRESET For setting the values of STANDARD,SOFT and BRIGHT.
(VSM:video status memory)
5. PRESET For setting the values of the preset.
6. AUDIO For entering/adjusting the setting values (adjustment values) of the multi-sound circuit
7.
PLUG & PLAY (ON) This is not used for service.
(a) [1] key Select 1. IF.
(b) [1] key Select 1. VCO.
(c) [DISPLAY] key When this is pressed twice, you will return to the SERVICE MENU.
(a) [1] key Select 1. IF.
(b) [2] key Select 2. DELAY POINT.
(c) MENU [ " ]/[ # ] key Adjust the setting value.
(d) [DISPLAY] key When this is pressed twice, you will return to the SERVICE MENU.
(a) [2] ~[6] keys Select one from 2. VC, 3. DEF, 4. VSM PRESET, 5. PRESET and 6. AUDIO
(b) MENU [ $ ]/[ % ] key Select setting items.
(c) MENU[ " ]/[ # ] key Adjust the setting values of the setting items.
Use the number keys on the remote control unit for setting of WHITE BALANCE.
For the setting, refer to each item concerned.
(d) [DISPLAY] key When this is pressed, you will return to the SERVICE MENU.

(No. 52195) 1-17
1-2 : SELECT DISPLAY : EXIT
SUB MENU 1. IF
SERVICE MENU
1. VCO
2. DELAY POINT
IF VCO (CW)
*****
MHz
DISPLAY : EXIT
TOO HIGH
ABOVE REFERENCE
BELOW REFERENCE
TOO LOW
DELAY POINT VHF
AGC TAKE-OVER
**
- /+: OPERATE DISPLAY : EXIT
SUB MENU 2. VC
60 Hz
Setting item
1. CUTOFF (R/G)
2. DRIVE (R/G/B)
3. BRIGHT
4. PICTURE
5. COLOR
6. TINT
7. DETAIL
8. YDELAY
9. AMP T.SHARP
4 : 3 / 16 : 9
1. VER. SLOPE
2. VER. HEIGHT
3. VER. POSITION
4. VER. SCURVE
5. HOR. POSITION
6. HOR. WIDTH
Setting item
7. EW-PIN
8. EW-TRAPEZ
9. UP CORNER
10. DW CORNER
11. HOR. PARALL
12. HOR. BOW
13. V. ZOOM
MENU


: SELECT
MENU
- /+: OPERATE DISPLAY : EXIT
SUB MENU 3. DEF
60Hz
NTSC 3.58
1. CUTOFF (R)
(G)
**
**
V/C
NTSC 3.58
1. VER. SLOPE
**
DEF 4 : 3
MENU


: SELECT
MENU - /+: OPERATE DISPLAY : EXIT
SUB MENU 5. PRESET
NTSC 3.58
1. PSNS
*
PRESET 60Hz
MENU


: SELECT
MENU
- /+: OPERATE DISPLAY : EXIT
SUB MENU 4. VSM PRESET
TINT
**
COLOR
**
BRIGHT
**
PICTURE
**
DETAIL
**
STANDARD
MENU


: SELECT
MENU
- /+: OPERATE DISPLAY : EXIT
1. PSNS
2. ACL
3. MUS
4. MAT
5. FCO
6. BPS
7. IFLH
8. VID
9. STM
Setting item
10. AFCW
11. VSW
12. FFI
13. AGC
14. CL
15. AKB
16. HBL
17. BKS
18. READ STATUS
19. VNR
20. PEAK
21. IVG
22. WPL
23. SOFT CLIPPER
24. IF PLL OFFSET
25. OVERSHOOT
26. HCO
27. HP2
28. AI VOLUME ADN
29. SUB BASS
30. SUB TREBLE
31. SUB TRIMMER
31. CCC LOOP
32. OSD BRIGHTNESS
BRIGHT / STANDARD / SOFT
TINT
COLOR
BRIGHT
PICTURE
DETAIL
Setting item
1. IF
3. DEF
5. PRESET 6. AUDIO
7. PLUG & PLAY (ON)
2. VC
4. VSM PRESET
SERVICE MENU
1-7 : SELECT DISPLAY : EXIT
******* **** ***** *****
**** **** *** ***
Fig. 1
SUB MENU 6. AUDIO
1. STATUS ******* *********
2. STANDARD SELECTION
*****
3. FM PRESCALE
STEREO
** ***
SAP
** ***
MONO
** ***
*****
MHzAUDIO
MENU


: SELECT
MENU
- /+: OPERATE DISPLAY : EXIT
4.5.4 SERVICE MENU FLOW CHART

1-18 (No. 52195)
4.6 ADJUSTMENT PROCEDURE
4.6.1 B1 POWER SUPPLY
Item Measuring
instrument Test point Adjustment part Description
B1 POWER
SUPPLY
check
Signal
generator
DC voltmeter
B1 (pin 1)
GND (pin 5)
[CN00S
connector
in MAIN
PWB]
(1) Receive a black and white signal.
(2) Connect a DC voltmeter between B1 and GND (between
pins 1 and 5 of the connector CN00S).
(3) Make sure that the voltage is DC134.5V ± 2V.
FOCUS
adjustment
FOCUS VR
[In HVT]
Item Measuring
instrument Test point Adjustment part Description
4.6.2 FOCUS ADJUSTMENT
Signal
generator
Notes:
•Set PICTURE MODE (VSM) to “BRIGHT”.
•The final adjustment of CONVERGENCE must be done
after the FOCUS adjustment. (CONVERGENCE is changed
by FOCUS adjustment.)
When makes difference by FOCUS adjustment, should be
reconfirming PURITY adjustment.
(1) Receive a cross-hatch signal.
(2) While looking at the screen centre, adjust the FOCUS VR
so that the vertical and horizontal lines will be clear and in
fine detail.
(3) Make sure that the picture is in focus even when the screen
gets darkened.
IF VCO
adjustment
[1. IF]
1. VCO (CW)
Item Measuring
instrument Test point Adjustment part Description
4.6.3 IF CIRCUIT ADJUSTMENTS
Remote
control unit
Note:
•Under normal conditions, no adjustment is required.
(1) Select 1. IF from the SERVICE MENU.
(2) Select 1. VCO.
(3) Receive a broadcast signal.
(4) Check the characters color of the BELOW REFERENCE
displayed to yellow.
(5) Press the [DISPLAY] key three times to return to normal
screen.
DELAY POINT
(AGC
TAKE-OVER)
adjustment
[1. IF]
2. DELAY POINT
Remote
control unit
(1) Receive a black and white broadcast signal (color off).
(2) Select 1. IF from the SERVICE MENU.
(3) Select 2. DELAY POINT.
(4) Adjust in order to eliminate any noise or beat from the
image. Any increase above the initial value produces noise
and any decrease below it produces beat.
(5) Press the [DISPLAY] key three times to return to the normal
screen.
(6) Turn to other channels and make sure that there are no
irregularities.
TOO HIGH
ABOVE REFERENCE
BELOW REFERENCE
TOO LOW
VCO (CW) .MHz
DISPLAY : EXIT
Receiving frequency
YELLOW
Initial setting value
Adjustment item NTSC 3.58
VHF UHF
2. DELAY POINT
(AGC TAKE-OVER) 30 30

(No. 52195) 1-19
4.6.4 VIDEO CIRCUIT ADJUSTMENTS
•The setting (adjustment) using the remote control unit is made on the basis of the initial setting values.
•The setting values which adjust the screen to the optimum condition can be different from the initial setting values.
•Do not change the initial setting values of the setting (adjustment) items not listed in “ADJUSTMENT PROCEDURE”.
[SUB MENU 2. VC]
Adjustment item Variable range
Initial setting value
PAL NTSC3.58 NTSC4.43
COMPONENT(V-2)
Item Measuring
instrument Test point Adjustment part Description
WHITE
BALANCE
(Low light)
adjustment
[2. VC]
1.CUTOFF (R)
1.CUTOFF (G)
SCREEN VR
[In HVT]
Note:
•Set PICTURE MODE (VSM) to “BRIGHT”.
(1) Receive a PAL black and white signal (color off).
(2) Select 2. VC from the SERVICE MENU.
(3) Select 1. CUTOFF (R) and (G), and set each value to initial
setting value with the [4] and [7] keys, or [5] and [8] keys.
(4) Press the [1] key to produce a single horizontal line.
(5) Turn the SCREEN VR fully counterclockwise, then slowly
turn it clockwise to where a red, blue or green color is
faintly visible.
(6) Use the [4] and [7] or [5] and [8] keys and adjust the other
2 colors to where the single horizontal line appears white.
(7) Turn the SCREEN VR to where the single horizontal line
glows faintly.
(8) Press the [2] key to return to 1. CUTOFF screen.
(9) Press the [DISPLAY] key twice to return to the normal
screen.
NTSC 3.58
1. CUTOFF
60 Hz
(R)
(G)
**
**
V/C
MENU


: SELECT
MENU
- /+: OPERATE DISPLAY : EXIT
Signal
generator
Remote
control unit
G CUTOFF (

)
H.LINE OFF
H.LINE ON
12 3
4
789
56
R CUTOFF(

)
R CUTOFF (

)
G CUTOFF (

)
REMOTE CONTROL UNIT
1. CUT OFF (R/G) -32 ~ +31 0/0 ←← -2/+14
2. DRIVE (R/G/B) -32 ~ +31 0/0/0 ←← ←
3. BRIGHT (TV/V-1/V-2/V-3) -32 ~ +31 -15/0/0/0 ←←--- / --- /-4/ ---
4. PICTURE -32 ~ +31 -11 ←← ---
5. COLOR (TV/VIDEO) -32 ~ +31 ---/-3 +11/--- ---/0 ---/+2
6. TINT (TV/VIDEO) -32 ~ +31 --- -16/+4 0/+2 ---
7. DETAIL (TV/VIDEO) [Do not adjust]
[AV-29VT11/P,AV-29VT31/P] -32 ~ +31 ---/-10 -10/-10 ---/-10 ---/0
[AV-29VT11/T] -32 ~ +31 ---/-0 -0/-0 ---/-0 ---/0
8. Y DELAY (TV/VIDEO) [Do not adjust] -8 ~ +7 ---/+1 0/+1 ---/0 ---
9. AMP T. SHARP [Do not adjust] -32 ~ +31 0 ←← ---
Adjustment Item Variable Initial setting
range value
1. CUT OFF R -32 ~ +31 0
G -32 ~ +31 0

1-20 (No. 52195)
Item Measuring
instrument Test point Adjustment part Description
SUBBRIGHT
adjustment
Notes:
•Proceed to the following adjustment after having completed
the WHITE BALANCE (Low light) and WHITE BALANCE
(High light) adjustment.
•Set PICTURE MODE (VSM) to “BRIGHT”.
(1) Receive a broadcast.
(2) Select 2. VC from the SERVICE MENU.
(3) Select 3. BRIGHT.
(4) Set the initial setting value.
(5) If the brightness is not best with the initial setting value,
make fine adjustment until you get the best brightness.
(6) Press the [DISPLAY] key twice to return to the normal
screen.
SUB
CONTRAST
adjustment
Remote
control unit
Notes:
•Proceed to the following adjustment after having completed
the SUB BRIGHT adjustment.
•Set PICTURE MODE (VSM) to “BRIGHT”.
(1) Receive a broadcast.
(2) Select 2. VC from the SERVICE MENU.
(3) Select 4. PICTURE.
(4) Set the initial setting value.
(5) If the contrast is not best with the initial setting value,
make fine adjustment until you get the best contrast.
(6) Press the [DISPLAY] key twice to return to the normal
screen.
[2. VC]
4. CONT
WHITE
BALANCE
(High light)
adjustment
Signal
generator
Remote
control unit
[2. VC]
2.DRIVE (R)
2.DRIVE (G)
2.DRIVE (B)
Notes:
•Proceed to the following adjustment after having completed
the WHITE BALANCE (Low light) adjustment.
•Set PICTURE MODE (VSM) to “BRIGHT”.
(1) Receive a PAL black and white signal (color off).
(2) Select 2. VC from the SERVICE MENU.
(3) Select 2. DRIVE (R), (G) and (B), and set each value to
initial setting value with the [4] to [9] keys.
(4) Use the [4] to [9] keys to produce a white screen.
(5) Press the [DISPLAY] key twice to return to the normal
screen.
G DRIVE (

)
12 3
4
789
56
R DRIVE (

) B DRIVE (

)
B DRIVE (

)
R DRIVE (

)
G DRIVE (

)
REMOTE CONTROL UNIT
NTSC 3.58
2. DRIVE
60 Hz
(R)
(G)
**
**
(B)
**
V/C
MENU


: SELECT
MENU
- /+: OPERATE DISPLAY : EXIT
Remote
control unit
[2. VC]
3. BRIGHT
Adjustment Item Variable Initial setting
range value
R -32 ~ +31 0
2. DRIVE G -32 ~ +31 0
B -32 ~ +31 0