JVC AV-2968TEE, AV-29LS2, AV-29LX2, AV-29LX2/-A Service Manual
SERVICE MANUAL
COLOUR TELEVISION
AV-29LS2
AV-29LX2
AV-2968TEE
BASIC CHASSIS
CH
AV-29LS2
AV-29LX2
POWER
MUTING
SYSTEM
COLOUR SOUND
ECO
SENSOR
DISPLAY
MENU
I/II
TV/TEXT
TV/VIDEO
123
OFF
TIMER
456
PICTURE
MODE
789
CHANNEL
RETURN+
SCAN
--
0-/
CHANNEL
VOLUME
TEXT
SIZE
INDEX
HOLD
REVEAL
SUBPAGE CANCEL
STORE MODE
TV
RM-C1020
RM-C1020-1H
[AV-29LS2]
RM-C1024-1H
[AV-29LX2]
[AV-29LX2
MUTING
SYSTEM
COLOUR SOUND
DISPLAY
TV/VIDEO
OFF
TIMER
PICTURE
MODE
CHANNEL
SCAN
CHANNEL
MENU
123
456
789
RETURN+
0-/
VOLUME
RM-C1024
TV
POWER
ECO
SENSOR
--
RM-C1023-1H
[AV-2968TEE]
/A
]
MUTING
SYSTEM
COLOUR SOUND
DISPLAY
MENU
TV/VIDEO
123
OFF
TIMER
456
PICTURE
MODE
789
CHANNEL
RETURN+
SCAN
0-/
VOLUME
CHANNEL
TEXT
INDEX
HOLD
REVEAL
SUBPAGE CANCEL
STORE MODE
RM-C1023
AV-29LX2 /A
AV-2968TEE
POWER
ECO
SENSOR
TV/TEXT
--
SIZE
TV
CONTENTS
a SPECIFICATIONS ....................................................................................................................................2
a OPERATING INSTRUCTIONS (APPENDIX)
a SAFETY PRECAUTIONS ........................................................................................................................3
a FEATURES ..............................................................................................................................................4
a FUNCTIONS .............................................................................................................................................5
a SPECIFIC SERVICE INSTRUCTIONS ....................................................................................................6
a SERVICE ADJUSTMENTS ....................................................................................................................14
a STANDARD CIRCUIT DIAGRAM (APPENDIX) .................................................................................. 2-1
a PARTS LIST ...........................................................................................................................................41
COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD.
No. 52062
Sep. 2002
AV-29LS2
AV-29LX2
AV-2968TEE
SPECIFICATIONS
Items
AV-29LS2 AV-29LX2 AV-29LX2/A
Dimensions (W × H × D)
Mass 47kg
TV RF System B, G, I, D, K, K1, M
Colour System TV Mode PAL / SECAM / NTSC3.58 / NTSC4.43
VIDEO Mode PAL / SECAM / NTSC3.58 / NTSC4.43
Stereo system A2 / NICAM (B/G, I, D/K) system Playback only
Teletext system
FLOF(Fastext), Q — Q
WST(World Standard Text)
Receiving Frequency VHF (VL) 46.25MHz – 140.25MHz (AS0 – S6)
VHF (VH) 147.25MHz – 423.25MHz (S7 – S36)
UHF 431.25MHz – 863.25MHz (S37 – CHINA 57)
CATV ● Cable TVs of Mid (X-Z, S1-S10)
Intermediate VIF Carrier 38.0MHz
Frequency 31.5MHz (6.5MHz)
SIF Carrier 32.0MHz (6.0MHz)
Colour Sub Carrier Frequency PAL (4.43MHz), SECAM (4.40625MHz / 4.25MHz)
Aerial Input Terminal 75Ø Unbalanced
Power Input AC110 – 240V, 50 / 60Hz
Power Consumption 175W
Picture Tube Visible size : 68cm measured diagonally
High Voltage 32.0kV +1/ – 1.5kV (at cut-off in service mode)
Speaker 5 × 12cm Oval type ×2
Audio Output 7W + 7W
Video / Audio Input (1 / 2 / 3) Video(1,3) : 1Vp-p, 75Ø (RCA pin jack)
Video/Audio Output 1Vp-p, 75Ø (RCA pin jack)
Headphone Jack Stereo mini jack (3.5φ)
Remote Control Unit RM-C1020-1H RM-C1024-1H RM-C1023-1H
73.2cm × 58.8cm × 51.8cm
Super (S11-S20) & Hyper (S21-S41) bands receivable
32.5MHz (5.5MHz)
33.5MHz (4.5MHz)
NTSC (3.58MHz / 4.43MHz)
(Max.)
/ 116W
(Avg.)
Audio(1,2,3) : 500mVrms ( -4dBs ), High Impedance (RCA pin jack)
Component Input ( Input 2 )
Y:1Vp-p positive (negative sync provided, when terminated with 75Ø)
CB/CR : 0.7Vp-p 75Ø
500mVrms(-4dBs)
Low impedance (400Hz when modulated 100%) (RCA pin jack)
(Battery size: AA/R06/UM-3 × 2)
Contents
AV-2968TEE
Design & specifications are subject to change without notice.
2No. 52062
SAFETY PRECAUTIONS
AC VOLTMETER
(HAVING 1000Ω/V,
OR MORE SENSITIVITY)
PLACE THIS PROBE
ON EACH EXPOSED
METAL PAR T
1500Ω 10W
0.15µF AC-TYPE
GOOD EARTH GROUND
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 (NEU-
TRAL) 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.
AV-29LS2
AV-29LX2
AV-2968TEE
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.
(1) 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.
(2) 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 1500Ø 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 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.).
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 10kØ 2W resistor to the anode button.
No. 52062 3
AV-29LS2
AV-29LX2
AV-2968TEE
FEATURES
s New chassis design enables use of an interactive on-screen control.
s Pure flat CRT produces fine textured picture in every detail.
s Wide range voltage (110V ~ 240V) for AC power input.
s With AUDIO/VIDEO/COMPONENT input terminals.
2
C bus control utilizes single chip ICs.
s I
s By means of AUTO PROGRAM, the TV stations can be selected
automatically and the TV channels can also be rearranged automatically.
s 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.
s Built-in OFF TIMER & RETURN +.
MAIN DIFFERENCE LIST
!
Part Name
! MAIN PWB SCH-1108A-H2 SCH-1095A-H2 SCH-1104A-H2
FRONT CABINET ASS’Y LC11193-020A-H LC11193-018A-H LC11193-021A-H
REMOTE CONTROL UNIT RM-C1020-1H RM-C1024-1H RM-C1023-1H
MODEL No.
AV-29LS2 AV-29LX2 AV-29LX2
/A AV-2968TEE
4No. 52062
FUNCTIONS
a FRONT PANEL
L/MONOVR
IN (VIDEO-3)
a REAR PANEL
VIDEO-1
INPUT
COMPONENT
(
)
VIDEO-2
INPUT
AV-29LS2
AV-29LX2
AV-2968TEE
OUTPUT
a REMOTE CONTROL UNIT
RM-C1020-1H
[AV-29LS2]
MUTING
SYSTEM
COLOUR SOUND
DISPLAY
MENU
I/II
TV/VIDEO
123
OFF
TIMER
456
PICTURE
MODE
789
CHANNEL
RETURN+
SCAN
CHANNEL
TEXT
HOLD
REVEAL
SUBPAGE CANCEL
STORE MODE
RM-C1020
V
L
/
R
MONO
0-/
VOLUME
INDEX
Y
/
V
C
B
C
R
POWER
ECO
SENSOR
TV/TEXT
SIZE
TV
V
L
L
/
MONO
R
R
RM-C1024-1H
[AV-29LX2]
[AV-29LX2
MUTING
SYSTEM
COLOUR SOUND
DISPLAY
TV/VIDEO
OFF
TIMER
PICTURE
MODE
CHANNEL
RETURN+
--
SCAN
CHANNEL
/A]
POWER
ECO
SENSOR
MENU
123
456
789
--
0-/
VOLUME
RM-C1024
TV
RM-C1023-1H
[AV-2968TEE]
MUTING
SYSTEM
COLOUR SOUND
DISPLAY
TV/VIDEO
OFF
TIMER
PICTURE
MODE
CHANNEL
RETURN+
SCAN
CHANNEL
REVEAL
HOLD
SUBPAGE CANCEL
STORE MODE
POWER
ECO
SENSOR
MENU
TV/TEXT
123
456
789
0-/
VOLUME
TEXT
INDEX
SIZE
RM-C1023
TV
--
No. 52062 5
AV-29LS2
AV-29LX2
AV-2968TEE
SPECIFIC SERVICE INSTRUCTIONS
DISASSEMBLY PROCEDURE
REMOVING THE REAR COVER
1. Unplug the power supply cord.
2. Remove the 16 screws marked
3. Withdraw the Rear cover toward you.
[CAUTION]
When reinstalling the rear cover, carefully push it inward after in-
•
serting the Main PWB into the rear cover groove.
as shown in Fig.1.
Å
REMOVING THE CHASSIS (CHASSIS BASE AND
CONTROL BASE)
After removing the rear cover.
•
1. Slightly raise the both sides of the chassis by hand and remove the
2 claws marked ı 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.)
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.
REMOVING THE AV TERMINAL BOARD
After removing the rear cover.
•
1. Remove the 4 screws marked Ç as shown in Fig.1.
2. When you pull out the AV Terminal board in the direction of arrow
marked Î as shown in Fig.1, it can be removed.
CHECKING THE MAIN PW BOARD
1. 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.
[CAUTION]
When erecting the chassis, be careful so that there will be no con-
•
tacting 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.
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.
REMOVING THE CONTROL BASE
After removing the rear cover and the chassis.
•
1. While pushing down the 2 claws marked ´ as shown in Fig. 2 and
pull out the Control base in the direction of arrow marked Ï as
shown in Fig. 2, the control base can be removed.
(If necessary, take off the wire, connector’s etc.)
REMOVING THE SPEAKER
After removing the rear cover.
•
1. Remove the 4 screws marked ˝ and 2 screws marked Ó as shown
in Fig.1.
2. Withdraw the speaker backward.
3. Follow the same steps when removing the other hand speaker.
6No. 52062
PICTURE TUBE
[FRONT SIDE]
CONTROL BASE
AV-29LS2
AV-29LX2
AV-2968TEE
E
FRONT CABINET
H
G
SPEAKER
(×4)
FRONT CONTROL
PWB (1/2)
CONTROL BASE
CRT
SOCKET PWB
Fig.2
H
G
SPEAKER
H
F
CHASSIS
BASE
Fig.2
(×4)
FRONT CONTROL PWB (2/2)
MAIN PWB
CLAW B
AV TERMINAL
BOARD
H
REAR COVER
CHASSIS
BASE
CLAW B
A
D
C
(×4)
(×16)
Fig.1
No. 52062 7
AV-29LS2
AV-29LX2
AV-2968TEE
REMOVING THE CRT
* Replacement of the CRT should be performed by 2 or more persons.
After removing the rear cover, chassis etc.,
•
1. Putting the CRT change table on soft cloth, the CRT change table
should also be covered with such soft cloth (shown in Fig. 3).
2. While keeping the surface of CRT down, mount the TV set on the
CRT change table balanced will as shown in Fig. 4.
3. Remove 4 screws marked by arrows with a box type screwdriver as
shown in Fig. 4.
Since the cabinet will drop when screws have been removed, be sure
•
to support the cabinet with hands.
4. After 4 screws have been removed, put the cabinet slowly on cloth
(At this time, be carefully so as not to damage the front surface of the
cabinet) shown in Fig. 5.
The CRT should be assembled according to the opposite sequence
•
of its dismounting steps.
* The CRT change table should preferably be smaller that the CRT sur-
face, and its height be about 35cm.
CRT CHANGE TABLE
CLOTH
CRT
CHANGE
TABLE
Fig. 3
CRT
APPROX.
35cm
BOX
TYPE
SCREW
DRIVER
COATING OF SILICON GREASE FOR ELECTRICAL INSULATION ON THE CRT ANODE CAP SECTION.
Subsequent to replacement of the CRT and HV transformer or repair
•
of the anode cap, etc. by dismounting them, be sure to coat silicon
grease for electrical insulation as shown in Fig. 6.
1. Wipe around the anode button with clean and dry cloth. (Fig. 6)
2. Coat silicon grease on the section around the anode button. At this
time, take care so that any silicon greases does not sticks to the
anode button. (Fig. 7)
夝 Silicon grease product No. KS - 650N
CRT
Anode button
CABINET
Approx.
20mm (Do not
coat grease on
this section
Fig. 4
CRT
CRT
CHANGE TABLE
Fig. 5
Silicon grease
should be coated
by 5mm or more
from the outside
diameter of anode
cap.
Silicon grease
coating
Fig. 6
8No. 52062
Anode button
(No sticking of
silicon grease)
Coating position
of silicon grease
Anode cap
Fig. 7
REPLACEMENT OF MEMORY IC
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
PA RTS LIST”. For its mounting location, refer to “ADJUSTMENT
LOCATIONS”.
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
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 if setting value is
different, set the correct value.
For setting, refer to the OPERATING INSTRUCTIONS.
(7) Setting of SERVICE MENU
Ver ify the setting for each setting item in the SERVICE
MENU.(See Table 3.) If readjustment is necessary, perform adjustment referring to “SERVICE ADJUSTMENTS”.
NAME OF REMOTE CONTROL KEYS
POWER
ECO
SENSOR
MENU
TV/TEXT
123
456
789
--
0-/
VOLUME
TEXT
HOLD INDEX
SIZE
DISPLAY
MENU
PICTURE
MODE
MUTING
SYSTEM
COLOUR SOUND
DISPLAY
I/II
TV/VIDEO
OFF
TIMER
PICTURE
MODE
CHANNEL
RETURN+
SCAN
CHANNEL
REVEAL
SUBPAGE CANCEL
STORE MODE
*/T
MENU
MENU
MENU
AV-29LS2
AV-29LX2
AV-2968TEE
SERVICE MENU
SERVICE MENU
1. IF
3. DEF
5. PRESET
7. PLUG & PLAY (ON)
1-7 : SELECT DISPLAY : EXIT
******* **** ***** *****
**** **** *** ***
1. IF
3. DEF
5. PRESET
6. PLUG & PLAY (ON)
1-6 : SELECT DISPLAY : EXIT
******* **** ***** *****
**** **** *** ***
[AV-29LX2, AV-29LX2/A, AV-2968TEE]
2. VC
4. VSM PRESET
6. A2NICAM
[AV-29LS2]
SERVICE MENU
2. VC
4. VSM PRESET
Fig. 1
key.
SYSTEM CONSTANT-
SYSTEM CONSTANT SET 1
SYSTEM
COMB
TILT
TEXT
SUPER BASS
LANGUAGE
>? : SEL -+ : OPE
SYSTEM CONSTANT-
SYSTEM CONSTANT SET 2
MSP
BILINGUAL
B / B SOUND
TUNER
COLOUR AUTO
>? : SEL -+ : OPE
SYSTEM CONSTANT-
SYSTEM CONSTANT SET 3
LOCK 1 MHz
>? : SEL -+ : OPE
500 KHz
250 KHz
156. 25 KHz
31.25 KHz
MULTI
YES
YES
ERCMI
YES
E/R/C/M/I
DISP : EXIT
YES
YES
NO
MU
YES
DISP : EXIT
: 040
: 040
: 040
: 030
: 030
DISP : EXIT
Ι
II
III
+
SYSTEM CONSTANT-
SYSTEM CONSTANT SET 4
3D SURROUND
3CH VOL/TONE
AMP TUNER
>? : SEL -+ : OPE
Fig. 2
YES
YES
NO
DISP : EXIT
IV
No. 52062 9
AV-29LS2
AV-29LX2
AV-2968TEE
SETTING OF SYSTEM CONSTANT SET
Setting item Setting content
SYSTEM
COMB
TILT
TEXT
SUPER BASS
LANGUAGE
MSP
BILINGUAL
B/B SOUND
TUNER
COLOUR AUTO
LOCK 1MHz
MULTI TRIPLE PAL SINGLE VIET
YES NO
YES NO
ERCMI ERAPU NO
YES NO
E/R/C/M/I E/R/C E/C
E/R/A/P/U E/R/A/P E/R/U
YES NO
YES NO
YES NO
MU MA
YES NO
000 240
AV-29LX2AV-29LS2
MULTI
YES
YES
ERCMI NO
NO
E/R/C/M/I
–
NO
NO
MU
NO
040
E/R/A/P E/R/A/P/U
–
NOYES
Setting value
––
YES
YES
AV-2968TEEAV-29LX2
/A
ERAPU
NO
NO
500KHz
250KHz
156.25KHz
31.25KHz
3D SURROUND
3CH VOL/TONE
AMP TUNER
000 240
000 240
000 240
000 240
YES NO
YES NO
YES NO
040
040
030
030
NO
YES
NO
Table 1
10 No. 52062
USER SETTING VALUES
Setting item Setting value
SUB POWER ON
CHANNEL POSITION 1 POSITION
CHANNEL PRESET REFER TO OPERATING INSTRUCTIONS
VOLUME 15 ± 2
TV/VIDEO TV
VNR OFF
COMPRESS (16:9) OFF
AUTO SHUTOFF OFF
CHILD LOCK OFF
BLUE BACK ON
VIDEO-2 SET VIDEO
LANGUAGE ENG
AI VOLUME ON
ON SCREEN DISPLAY POSITION INDICATION
COLOUR SYSTEM PAL
SOUND SYSTEM B/G
STEREO MODE STEREO [AV-29LS2 only]
PICTURE MODE-VSM BRIGHT
OFF TIMER 00
ECO SENSOR OFF
BASS CENTRE
TREBLE CENTRE
BALANCE CENTRE
Tab le 2
AV-29LS2
AV-29LX2
AV-2968TEE
No. 52062 11
AV-29LS2
AV-29LX2
AV-2968TEE
SERVICE MENU SETTING ITEMS
Service menu Setting item
1. IF 1. VCO
2. DELAY POINT
2. VC 1. CUTOFF(R/G)
2. DRIVE(R/G/B)
3. BRIGHT
4. CONT
5. COLOUR
6. TINT
7. SHARP
8. YDELAY
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/STD/SOFT) 2. COLOUR
Do not adjust
3. BRIGHT
4. PICTURE
5. DETAIL
Do not adjust
Service menu Setting item
5. PRESET 1. PSNS
Do not adjust
6. A2NICAM 1. ERROR LIMIT
[AV-29LS2 only] 2. A2 ID THR
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
31. CCCLOOP
3. SOUND SYSTEM
Tab le 3
12 No. 52062
6/7.
PLUG & PLAY(ON)
Do not adjust
REPLACEMENT OF CHIP COMPONENT
CAUTIONS
a
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.
SOLDERING IRON
a
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.
REPLACEMENT STEPS
a
1. How to remove Chip parts
Resistors, capacitors, etc.
(1) As shown in the figure, push the part with tweezers and alter-
nately melt the solder at each end.
AV-29LS2
AV-29LX2
AV-2968TEE
2. How to install Chip parts
Resistors, capacitors, etc.
(1) Apply solder to the pattern as indicated in the figure.
(2) Shift with tweezers and remove the chip part.
Transistors, diodes, variable resistors, etc.
(1) Apply extra solder to each lead.
SOLDER
(2) As shown in the figure, push the part with tweezers and alter-
nately melt the solder at each lead. Shift and remove the chip
part.
SOLDER
(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.
A
B
C
(4) Then solder leads B and C.
A
Note : After removing the part, remove remaining solder from the
pattern.
No. 52062 13
B
C
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