Page 1
No.51834
Aug. 2001
A
V-N29302
1
COPYRIGHT © 2001 VICTOR COMPANY OF JAPAN, LTD.
Aug. 2001
AV-N29302
/S
AV-N29302
/R
CONTENTS
!
SPECIFICATIONS
････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･････････････････････････････
･･････････････････････････････････････････････････････････
･････････････････････････････
2
!
SAFETY PRECAUTIONS
････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･･･････････････････････
･･････････････････････････････････････････････
･･･････････････････････
3
!
FEATURES
････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･･･
･･････
･･･
4
!
MAIN DIFFERENCE LIST
････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･･･････････････････････
･･････････････････････････････････････････････
･･･････････････････････
4
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HOW TO IDENTIFY M OD ELS
････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ････････････････････
････････････････････････････････････････
････････････････････
4
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FUNCTIONS
････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･･
････
･･
5
!
SPECIFIC SERVICE INSTRUCTIONS
････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･････････････
･･････････････････････････
･････････････
6
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SERVICE ADJUSTMENTS
････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･････････････････････
･･････････････････････････････････････････
･････････････････････
10
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PARTS LIST
････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ････
29
★
OPERATING INSTRUCTIONS
★
STANDARD CIRCUIT DIAGRAM
････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ････････････････
････････････････････････････････
････････････････
2-1
SERVICE MANUAL
COLOR TELEVISION
BASIC CHASSIS
FD
Page 2
No.51834
A
V-N29302
2
SPECIFICATIONS
Contents
Items
AV-N29302/S AV-N29302/R
Dimensions (W
××××H××××
D)
752mm×590mm×531mm
Mass
32.2 kg
Reception For mat
NTSC, BTSC System (Multi-Channel Sound)
Reception Range
VHF, UHF
VL Band
VH Band
UHF Band
(02～06) 54MHz～88MHz
(07～13) 174MHz～216MHz
(14～69) 470MHz～806MHz
CATV
Low Band
High Band
Mid Band
Super Band
Hyper Ban d
Ultr a B a nd
Sub Mid Band
TV/CATV To tal Channel
(02～06, A-8 ) by (02～06&01)
(07～13) by (07～13)
(A～1) by (14～22)
(J～W) by (23～36)
(W+1～W+28) by (37～64)
(W+29～W+84) by (65～125)
(A8, A4～A1) by (0 1, 96～99)
181 Channels
Intermediate Frequency
Video IF Carrier
Sound IF Carrier
Color Sub Carrier
45.75MHz
41.25MHz (4.5MHz)
3.58MHz
Power Input
Power Consumpt ion
120V AC, 60Hz
113W
Picture Tube
High Voltage
29” (68cm) M eas ur ed Diagon al l y
29kV±1kV (at zer o b eam current)
Speaker
Audio Power Output
5×9cm Oval type×2
1.2W + 1.2W
Built in BBE sound function
Input terminal
Input 1 S-Video
Video(V)
Audio(L, R)
Y: 1Vp-p Pos itive (negative sync provided, w h en termin at ed wi th 7 5Ω)
C: 0.286V
p-p
(burst signal, when terminated with 75Ω)
1Vp-p, 75Ω (RCA pin jack)
500mVrms ( -4dBs ), High Impedance (RCA pin jack)
Input 2 Component Video
Video / Y, Pb, Pr
Audio(L, R)
1Vp-p 75Ω(positive sync)
50mVrms (-4dBs), High Impedance (RCA pin jack)
Output termin al
Variable Audio Outp ut (R /L)
More than 0～1550mVrms (+6dBs)
Low imped ance (400H z when modul ated 100%) (RCA pi n j ack )
Antenna terminal
75Ω(VHF/UHF) Terminal, F-Type Connector
Remote Control Unit
RM-C303G(AA/R6/UM-3 battery×2)
Design & specificat ions ar e s ubjec t to change without notice.
(54MHz～804MHz)
Page 3
No. 51834
A
V-N29302
3
SAFETY PRECAUTIONS
1. The desig n of this product c ontains speci al hardware, m any
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
personn el only.
2. Alter ati ons of the design or cir c ui try of th e products shoul d n ot
be made. Any design alterations or additions will void the
manufacturer's warranty and will further relieve the
manufacturer of r esponsibility for personal injury or property
damage resulting therefrom.
3. Many electrical and mechanical parts in the products have
special safety-related characteristics. These characterist ics are
often not evi dent from vis ual insp ection nor c an the pr otecti on
afforded by them necessarily be obtained by using
replacement components rated for higher voltage, wattage, etc.
Replacement parts which have these special safety
charact erist ics are identif ied in the p arts lis t of Servic e m anual.
Electric al co mp on ents h av ing su ch f eatur es ar e id ent ifi ed
by shading on t he schem atic s an d by (
!!!!
) on th e p ar ts li st
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
Servi ce manua l may cau se shock , fire, or oth e r haz a rd s.
4.
Use isolat io n tra nsformer wh en hot chassi s.
The chassis and an y sub- chass is c ontain ed in som e prod ucts
ar e con nect ed t o on e sid e of th e AC p owe r lin e. An is olat ion
transf ormer of adequate cap acity should be ins erted between
the produc t and the AC power supp ly point while perf orming
any service on some products when the HOT chassis is
exposed.
5.
Don't short b etween the LIVE s ide groun d and IS OLATE D
(NEUTRAL) side ground or EARTH side ground when
repairing.
Some model's power circuit is partly different in the GND. The
differenc e of t he GN D is shown by t he LI VE : (") side GND,
the ISOLATED(NEU TRAL) : (#) sid e GND an d EARTH : ($)
side GND. Don't short between the LIVE side GND and
ISOLATED(NEUTRAL) side GND or EARTH side GND and
never meas ure with a meas uring app aratus (oscill osc ope etc.)
the LIVE side GND and ISOLATED(NEUTRAL) side GN D or
EARTH side GND at the same time.
If above note will not be kept, a fuse or any parts will be broken.
6. 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).
7. The high vol t ag e applied to t h e pic tu re tube must c onf or m wit h
that specif ied in Service manu al. E xcessive high voltage can
cause an increase in X-Ray emission, arcing and possible
component damage, therefor e oper ation under excess ive high
voltag e conditi ons sh ould b e kept to a minimu m, or should b e
prevented. If severe arcing occurs, remove the AC power
immediately and determine the cause by visual inspection
(incorrec t inst allati on, crac ked or melt ed high volt age har ness,
poor sold ering, etc.). T o maint ain the proper min imum l evel of
soft X-Ra y emiss ion, comp onents i n the high voltag e circuit ry
includin g the pic ture tu be must be the exact r eplacem ents or
alternatives approved by the manufacturer of the complete
product.
8. Do not check high voltage by drawing an arc. Use a high
voltag e meter or a high vol tag e prob e wit h a VTVM. Disc harg e
the picture tube before attempting meter connection, by
connecti ng a cl ip lead to th e gr ound fr am e and c onnect ing t h e
other end of the lead through a 10kΩ 2W resistor to the anode
button.
9. When service is required, observe the original lead dress.
Extra pr ecauti on shou ld be gi ven to assure c orrect l ead dr ess
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.
10.
Isolation Check
(Safety for Electrical Shock Hazard)
After r e- assembling t he product, always perf orm an isol ation
check on the exposed metal parts of the cabinet (antenna
terminals, video/audio input and output terminals, Control
knobs, metal cabinet, screwheads, earphone jack, control
shafts , etc.) to b e sure th e produc t is saf e to oper ate with out
danger of el ectrical shock.
(1)
Dielectr i c St rength 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
1100V 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 , an d 3000V AC (r. m.s.) to an ap pli anc e rat ed
200V or more, f or a peri od of one secon d.)
This method of test requires a test equipment not generally
found in the service trade.
(2)
Leakage Current Check
Plug th e AC lin e c ord dir ect ly into th e AC ou tl et ( do not us e a
line isolat i on transformer dur in g this chec k .) . U s i ng a " L eak ag e
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 gr ound ( water pi pe, etc.) . An y leak age c urrent must n ot
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 th e AC lin e c ord dir ect ly into th e AC ou tl et ( do not us e 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 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
voltm eter. Move th e r es is tor conn ect i on t o eac h e xp os ed metal
part, particularly any exposed metal part having a return path to
the chassis , and meas ure the AC voltage acr oss the r esistor.
Now, reverse the plug in the AC outlet and repeat each
measur ement. A ny volt age meas ur ed mus t not exc eed 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.).
0.15μF AC-TYPE
1500
Ω
10W
GOOD
EARTH
GROUND
PLACE THIS PROBE
ON EACH EXPOSED
METAL PART
AC VOLTMETER
(HAVING 1000
Ω
/V,
OR MORE SENSITIVITY)
Page 4
No.51834
A
V-N29302
4
FEATURES
"
New c h as s is d es ig n en abl es us e of a s in g le b oard wi th s im pl if i ed
circuitry.
"
Users can make fun to c onnect the Digital Video Disk player with
the component video signal input terminal.
"
Provided with miniature tuner (TV/CATV).
"
Multifunctional remote control permits picture adjustment.
"
Adop t ion of the CHANNEL GUA RD fun cti on preven t s th e specific
channels from being selected, unless the “ID number” is key in.
"
I2C bus control utilizes single chip ICs.
"
Adoption of the VIDEO STATUS function.
"
Adoption of the ON/OFF TIMER function.
"
Built-in V-CHIP system.
"
With 75ΩV/U in comm on (F-Type) ANT Terminal.
"
SLEEP TIMER for setting in real time.
"
Closed-caption broadcasts can be viewed.
"
Built-in MTS system.
"
Built-in HYPER-SURROUND system.
"
S-VIDEO input terminal for taking be st advantage of Super VHS.
"
Variable Audio output terminal.
"
2 LINE Digital Comb filter Improved picture quality.
MAIN DIFFERENCE LIST
!!!!
Model name
Parts Name
AV-N29302
/S
AV-N29302
/R
MAIN PWB SFD-1007A-M2 SFD-1006A-M2
!
ITC TUBE A68QDN891X001 A68ADT25X881
HOW TO IDENTIFY MODELS
The difference between AV-N29302/S and AV-N29302/R is in the PICTURE TUBE.
As the result of the d i ffere nce in picture tube, the MAIN PWB also differs.
!
Model
Parts name
AV-N29302
/S
AV-N29302
/R
!
RATING LABEL
Indicated AV-N29302
Indicated “S”
Indicated AV-N29302
Indicated “R”
Page 5
No.51834
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V-N29302
5
FUNCTIONS
①
②
③
④
⑤
⑥
⑦
⑧
⑨
⑩
⑪
⑫
⑬
⑭
⑮
⑯
①
TV / CATV
②
VIDEO STATUS
③
BBE
④
DISPLAY
⑤
SLEEP TIMER
⑥
HYPER SURROUND
⑦
MUTING
⑧
MENU
⑨
POWER
⑩
VCR / DVD
⑪
INPUT
⑫
CHANNEL KEYS
⑬
LIGHT
⑭
V-CHIP
⑮
EXIT
⑯
VCR CONTROL KEYS
■■■■
FRONT PANEL CONTROL
①
VIDEO INPUT TERMINAL
②
AUDIO L INPUT TERMINAL
③
AUDIO R INPUT TERMINAL
④
MENU KEY
⑤
CHANNEL -/+ KEY (OPERATE
!!!"!!!!
KEY)
⑥
VOLUME -/+ KEY
⑦
INDICATOR lamp (TI M E R / POWER)
⑧
POWER BUTTON
①②③④
⑤⑥
⑦⑧
①
AUDIO OUTPUT TERMINAL
②
INPUT1 TERMINAL(S, V, L/MONO, R)
③
INPUT2 TERMINAL(V/Y, P
R
, PB, L/MONO, R)
④
ANTENNA TERM INAL
①
②
③
④
■■■■
REAR TERMINAL
■■■■
REMOTE CONTROL UNIT
Page 6
No.51834
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V-N29302
6
SPECIFIC SERVICE INSTRUCTIONS
DISASSEMBLY PROCEDURE
REMOVING THE REAR COVER
1. Disconnect the power plug from wall outlet.
2. As shown in the Fig.1, remove the
11
screws marked
!!!!
.
3. As shown in Fig.1, remove the
4
screws marked
""""
.
4. Then remove the REAR COVER toward you.
REMOVING THE CHASSIS
"
After removing the REAR COVER.
1. Slightly raise the both si de s of the chassi s by hand an d remo ve the
two claws under the both sides of the chassis from the front
cabinet.
2. Withdraw the chassis backward.
(If necessary, remove the wire clamp, connectors etc.)
REMOVING THE SPEAKER
"
After removing the rear cover.
1. As shown in Fig. 1, removing the
2
screws marked
####
,
then
remove th e sp eak er.
2. Follow the same steps when removing the other hand speaker.
NOTE :
When removing the screws marked
####
of the speaker,
remove the lower s ide screw f irst, and th en remove the
upper one.
CHECKING THE PW BOARD
To check the PW Board from back side.
1. Pull out the chassis (refer to REMOVING THE CHASSIS).
2. Erect the ch assis ver tic all y s o that you c an eas i ly ch ec k th e bac k
side of the PW Board.
CAUTION
"
When erecting the chassis, be careful so that there will be no
contact ing wit h ot her P W 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.
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 b e inadver t ently rem ov ed, be sure to t i e th e wires w ith a
new cable tie.
Page 7
No.51834
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V-N29302
7
####
FRONT CABINET
CRT
CRT SOCKET PWB
POWER PWB
MAIN PWB
HVT
POWER CORD
REAR COVER
SPEAKER
Fig.1
""""
!!!!
####
SPEAKER
Page 8
No.51834
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V-N29302
8
MEMORY IC REPLAC EMENT
1. Memory IC
This model uses a memory IC.
This memory IC stores data for proper operation of the video and deflection circuits.
When replacing, be sure to use an IC containing this (initial value) data.
2. Memory IC replacement pro cedure
Procedure Screen display
(1) Power off
Switch off th e pow er and disc onn ec t t h e pow er c ord f r om t h e out l et .
(2) Replace the memory IC
Initial val u e mus t b e ent ered into th e new IC .
(3) Power on
Connect the power cord to the outlet and switch on the power.
(4) System constant ch eck and setting
1) Press
SLEEP TIMER
key and, while the ind icati on of “
SLEEP 0 M IN.
”
is being displ ayed, press
DISPLAY
key and
VIDEO STAT US
key on
the remote control unit simultaneously.
2) The SERVICE MENU screen of Fig.1 is displayed.
3) While the S ERVICE MENU is dis played, again simul taneously press
the
DISPLAY
and
VIDEO STATUS
keys to dis pl ay the Fig .2 SYST EM
CONSTANT screen.
4) Refer to t he S YSTEM C ONST ANT t able and ch eck th e settin g it ems.
Where thes e differ, s elect the sett ing item wit h the
UP/DOWN
(▲/▼)
key and adjust the sett in g w ith the
LEFT/RIGHT (
) keys.
5) After adjusting, release the
LEFT/RIGHT(
) key to store the sett ing
value.
6) Press the
EXIT
key twice to return the normal screen.
(5) Receive channel setting
Refer to the OPERATING INSTRUCTIONS (USER'S GUIDE) and s et
the receive channels (Channels Preset) as described.
(6) User settings
Check the user setting items according to Table 2.
Where these do not agree, refer to the OP ERATING INSTRUCTIONS
(USER'S GUIDE) and set the items as described.
(7) SERVICE MENU setting
Verify what to set in the SERVICE MENU, and set whatever is
necessary.(Fig.1) Refer to the SERVICE ADJUSTMENT for setting.
SERVICE MENU
PICTURE SOUND
THEATER
LOW LIGHT HIGH LIGHT
RF AFC CHK
SELECT BY EXIT BY
OPERATE BY EXIT
Fig.1
SYSTEM CONSTANT
MODEL :
**-***
**-*****-***
**-***********
V-CHIP : YES
CAN V-CHIP : YES
******
************
**************-*****
**********
*****
SELECT BY EXIT BY
OPERATE BY EXIT
Fig.2
Page 9
No.51834
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9
TABLE 1 (System Constant setting)
Setting value
Setting item Setting content
AV-N29302/S AV-N29302/R
MODEL AV-27D302 AV-27D302
V-CHIP YES YES
CAN V-CHIP YES YES
TABLE 2 (User setting value)
Setting item Setting value
1. Use remote controller keys
POWER
CHANNEL
CHANNEL PRESET
VOLUME
TV/VIDEO(INPUT)
ON
CH 02
See OPERATING INSTRUCTIONS.
10
TV
DISPLAY
SLEEP TIMER
VIDEO STATUS
HYPER SURROUND
OFF
OFF
STANDARD
OFF
2. Settin g of MEN U
TINT
COLOR
PICTURE
BRIGHT
DETAIL
CENTER
CENTER
CENTER
CENTER
CENTER
NOISE MUTING
SET VIDEO STATUS
ON
ALL CENTER
BASS
TREBLE
BALANCE
MTS
TV SPEAKER
CENTER
CENTER
CENTER
STEREO
ON
SET CLOCK
ON/OFF TIMER
LANGUAGE
CLOSED CAPTION
BACK GROUND
V2 COMPONENT IN
Unnecessary to set
NO
SPANISH
OFF
BLACK
NO
AUTO TUNER SETUP
CHANNEL SUMMARY
V-CHIP
V-CHIP RATINGS
SET LOCK CODE
UNRATED
TUNER MODE : AIR
Unnecessary to set
OFF
ALL OFF
Unnecessary to set
VIEW
A
V-27D302
A
V-27D202
AV-27230 AV-20D202
YES NO
YES NO
Page 10
No.51834
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V-N29302
10
SERVICE ADJUSTMENTS
ADJUSTMENT PREPARATION
1. You can make the necessary adjustments for this unit with
either the Remote Control Unit or With the adjustment
tools and parts as give n belo w.
2.
Adjustment with the Remote Control Unit is made on t he
basis of the ini tial setting values, however, the new setting
values wh ich s et t he scree n t o it s opt imu m co ndit ion may
differ from the initial settings.
3. Make sure that AC power is turned on correctly.
4. T urn on the pow er f or set and test eq uip ment b efore us e, 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 adjustment - variable resistors, transformers,
condens er s , etc .
7. Presett i ng b efore adjustment.
Unless otherwise specified in the adjustment instructions,
preset the following functions with the remote control unit:
VIDEO STATUS STANDARD
BASS, TREBLE, BALANCE
CENTER
HYPER SURROUND
OFF
TINT, COLOR,
PICTURE, BRIGHT, DETAIL
CENTER
ADJUSTMENT EQUIPMENT
1. DC voltmeter (or digital voltmeter)
2. Oscilloscope
3. Signal generator (Pattern generator)［NTSC
］
4. Remote control unit
5. TV audio multiplex s ignal generator.
6. Frequency counter
ADJUSTMENT ITEMS
Adjustment items Adjustment items Adjustment items
B1 POWER SUPPLY
WHITE BALANCE (High Light) MTS STEREO VCO
RF. AGC
SUB BRIGHT MTS SAP VCO
FOCUS SUB CONTRAST MTS FILTER check
V. SIZE
SUB COLOR MTS SEPARATION
H. POSITION
SUB TINT
WHITE BALANCE (Low Light) MTS INPUT LEVEL check
Page 11
No.51834
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11
ADJUSTMENT LOCATIONS
MAIN PWB
CRT SOCKET PWB
(W ithin MAIN PWB ASS'Y)
T
TP-E
POWER
(SOLDER SIDE)
TOP
FRONT
HV
UPPER : FOCUS
LOWER : SCREEN
U
T
TUNER
IC101
IC702IC701
FUSE
IC921
HVT
FUSE
TP-91
(B1)
CRT EARTH
(BRAIDED ASS'Y )
E1
TP-R
S
AV IN / OUT
TP-E
( )
RESISTER
VOL+ VOL- CH+ CH- MENU
POWER
A
A
PW
P
POWER PWB
FRONT
MEMORY
INDICATOR LAMP
(TIMER/POWER)
Page 12
No. 51834
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12
BASIC OPERATION OF SERVICE MENU
1. TOOL OF SERVICE MENU OPERATIO N
Operate the SERVICE MENU with the REMOTE CONTROL UNIT.
2. SERVICE MENU ITEMS
In general, basic setting (adjustments) items or verifications are performed in the SERVICE MENU.
"
PICTURE
････････････････････
This sets the setting values (adjustment values) of the VIDEO/CHROMA and DEFLECTION circuits.
"
SOUND
･････････････････････
This sets the setting values (adjustment values) of the AUDIO circuit.
"
THEATER
･･･････････････････
This is used when the THEATER MODE is adjusted.
"
LOW LIGHT
･･････････････････
This sets the setting values (adjustment values) of the WHITE BALANCE circuit.
"
HIGH LIGHT
･････････････････
This sets the setting values (adjustment values) of the WHITE BALANCE circuit.
"
RF AFC CHK
･････････････････
This is used when the IF VCO is adjusted.
[Do not adjust]
3. Basic Op er a ti o ns o f th e SE RV ICE MENU
(1) How to enter the SERVICE MENU.
Press
SLEEP TIMER
key and, whi l e the indic ati on of “
SLEEP 0 MIN.
” is bei ng disp lay ed, press
DISPLAY
key and
VIDEO STATUS
key
on the remote control unit simultaneously to enter the
SERVICE MENU
screen ① shown in the next figure page.
(2) SERVICE MENU screen selection
Press the
UP / DOWN
(▲/▼) key to selec t any of the follo wing items.
●
PICTURE
●
SOUND
●
THEATER
●
LOW LIGHT
●
HIGH LIGHT
●
RF AFC CHK
(3) Enter the any setting ( adjustment ) mode
"
PICTURE and SOUND mode
1) If select any of PICTURE or SOUND items, and t he
LEFT / RIGHT
( ) key is pressed from SERVICE MENU ( MAIN MENU ), the
screen ② will be displayed as shown in figure page later.
2) Then the
UP / DOW N
(▲/▼) k ey is pr ess ed, th e PI CT URE mode sc r een ③ or the SOUND m ode screen ④ is dis play ed, and th e
PICTURE or SOUND setting c an be performed.
"
THEATER, LOW LIGHT, HIGH LIGHT and RF AFC CHK mode
1) If select an y of THEATER / LOW LIGHT / HIGH LIGH T / RF AFC CHK items, and the
LEFT / RIGHT
( ) key is pressed from
SERVICE MENU ( MAIN MENU ), the screens ⑤ ⑥ ⑦ ⑧ will be displayed as shown in figure page later.
2) Then the settings or ver if ic at i ons c an b e performed.
Page 13
No. 51834
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13
SELECT BY
EXIT BY
IT
EXIT
BRIGHT
EXIT BY
IT
BRIGHT
EXIT
***
******
***
***
*** ***
*** ****** ***
** ***** ***
** ***
SELECT BY
OPERATE BY
EXIT BY
IT
1. BRIGHT
EXIT
STATUS
***
******
***
********
****************
********
EXIT BY
IT
HIGH LIGHT
EXIT
***
******
***
SELECT BY
OPERATE BY
EXIT BY
IT
RF AFC
FINE
STATUS
EXIT
①①①①
SERVICE MENU (MAIN MENU
)
②②②②
SCREEN
⑦⑦⑦⑦
HIGH LIGHT MODE
***
******
***
⑤⑤⑤⑤
THEATER MODE(1/2
)
SELECT BY
OPERATE BY
EXIT BY
IT
TINT
COLOR
PICTURE
BRIGHT
DETAIL
EXIT
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
⑧⑧⑧⑧
RF AFC CHK MODE [DO NOT ADJUST
]
ON
********
****************
********
⑥⑥⑥⑥
LOW LIGHT MODE
③③③③
PICTURE MODE
***
******
***
④④④④
SOUND MODE
SELECT BY
OPERATE BY
EXIT BY
IT
1. IN LEVEL
EXIT
STATUS
***
******
***
********
****************
********
SERVICE MENU
PICTURE SOUND
THEATER
LOW LIGHT HIGH LIGHT
RF AFC CHK
SELECT BY EXIT BY
OPERATE BY
IT
EXIT
TOO HIGH TOO LOWGOOD
R CUT
***
******
***
G CUT
***
******
***
B CUT
R DRIVE
B DRIVE
DC REST
BLK ST
***
******
***
***
******
***
***
******
***
***
******
***
***
******
***
GMM PNT
***
******
***
1/2
SELECT BY
OPERATE BY
EXIT BY
IT
CD MAT
RY GAIN
EXIT
****
****
GY PHAS
****
CORING
****
CMP CD
CMP RY
****
****
CMP GY
****
2/2
CMP COR
****
THEATER MODE(2/2
)
Page 14
No. 51834
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14
(4) Setting method
1)
UP / DOWN
(▲/▼)key.
Select the SETTING ITEM.
2)
LEFT / RIGHT
( ) key.
Setting (adjust) the SETTING VALUE of the SETTING ITEM.
When the key is released the SETTING VALUE will be stored
(memorized).
3) EXIT key
Return t o the previous sc reen.
(5) Releasing SERVICE MENU
1) After returning to the SERVICE MENU upon completion of the setting
(adjust m ent) w or k, press th e EXIT k ey ag ai n.
★
The s ettings f or LOW LIGHT and H IGH LI GHT are descr ibed in t he W HITE
BALANCE page of ADJUSTMENT.
SELECT BY
OPERATE BY
EXIT BY
IT
1. IN LEVEL
STATUS
EXIT
***
******
***
********
****************
********
SOUND MODE
SELECT BY
OPERATE BY
EXIT BY
IT
1. BRIGHT
EXIT
STATUS
***
******
***
********
****************
********
PICTURE MODE
SETTING VALUE
SETTING
ITEM
SELECT BY
OPERATE BY
EXIT BY
IT
CD MAT
RY GAIN
EXIT
****
****
GY PHA S
****
CORING
****
CMP CD
CMP RY
****
****
CMP GY
****
2/2
CMP COR
****
THEATER MODE(2/2)
SELECT BY
OPERATE BY
EXIT BY
IT
TINT
COLOR
PICTURE
BRIGHT
DETAIL
EXIT
************
************
************
************
************
R CUT
************
G CUT
************
B CUT
R DRIVE
B DRIVE
DC REST
BLK ST
************
************
************
************
************
GMM PNT
************
1/2
THEATER MODE(1/2)
The letter of the selected
Items are dis p layed in yell ow .
Page 15
No. 51834
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15
INITIAL SETTING VALUE OF SERVICE MENU
1. Adjust me nt of the SE RVI CE M ENU i s made on the ba sis o f the in it ial sett ing va lue s; ho wev e r, the ne w set t ing va lue s wh ic h se t the screen in
its optim um c ondi tion may differ from the initial s ett in g.
2. Do not change the initial setting values of the setting (adjustment) items not listed in “ADJUSTMENT”.
PI CTU RE MODE
"
The 5 setting items in the video mode No.6 EXT BRI, No.7 EXT PICT, No.8 EXT CLR, No.9 EXT TINT and No.10 EXT DTL are linked to the
items in t he TV MOD E No.1 BRI GHT , N o.2 PICTU RE, N o. 3 COLOR , N o.4 T INT and N o.5 T V DT L r esp ecti vely. W hen th e setti ng items in
the TV mode ar e adjust ed, t h e valu es in th e set ting items in t he vi deo mod e are r evis ed aut omat ic all y to the s ame val ues in the TV mode.
(The initial setting values given in parenthes is are offset values.)
"
When the 5 items (No.6, 7, 8, 9 and 10 ) ar e ad jus t ed in the video mode, th e s ettin g val ues in each it em ar e ch an g ed independ ently.
Initial settin g value
No. Setting (Adjustment) items Variable range
AV-N29302/S AV-N29302/R
1. BRIGHT
000～127
064 064
2. PICTURE
000～127
100 100
3. COLOR
000～127
055 055
4. TINT
000～127
087 087
5. TV DTL
000～63
050 050
6. EXT BRI.
±
025
±
000
±
000
7. EXT PICT.
±
025
+002 +002
8. EXT CLR
±
025
±
000
±
000
9. EXT TINT
±
025
-005 -005
10. EXT DTL
000～063
050 050
11. CMP BRI
±
025
-001 -001
12. CMP PICT
±
025
±
000
±
000
13. CMP CLR
000～127
072 072
14. CMP TINT
000～127
037 037
15. CMP DTL
000～063
050 050
16. CMP R CT
±
025
+008 +008
17. CMP G CT
±
025
±
000
±
000
18. CMP B CT
±
025
+008 +008
19. CMP R DR
±
025
±
000
±
000
20. CMP B DR
±
025
-002 -002
21. WPL 000 / 001 001 001
22. C TRAP 000 / 001 000 000
23. CORING 000 / 001 001 001
24. CMP CORI 000 / 001 001 001
25. TV SHAP 000 / 001 001 001
26. EXT SHAP 000 / 001 001 001
27. CMP SHAP 000 / 001 001 001
28. RGB CONT
000～063
016 016
29. TV ID S 000 / 001 000 000
30. EXT ID S 000 / 001 000 000
Page 16
No. 51834
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V-N29302
16
Initial settin g value
No. Setting (Adjustment) items Variable range
AV-N29302/S AV-N29302/R
31. F ID 000 / 001 000 000
32. Y MUTE 000 / 001 000 000
33. SUB CONT
000～015
008 008
34. R Y GAIN 000 / 001 001 001
35. CMP R Y 000 / 001 001 001
36. G Y PHAS 000 / 001 001 001
37. CMP G Y 000 / 001 001 001
38. CD MATRI
000～003
003 003
39. CMP CD M
000～003
001 001
40. BLK ST
000～003
001 001
41. DC REST
000～003
001 001
42. CLR GMM 000 / 001 000 000
43. UV / CBCR 000 / 001 000 000
44. AT FLESH 000 / 001 000 000
45. ABL GAIN
000～003
000 000
46. ABL ST P
000～003
003 003
47. RGB ABCL 000 / 001 001 001
48. TV B/T 000 / 001 001 001
49. EXT B/T 000 / 001 000 000
50. GMM PNT
000～003
003 003
51. BUZZ 000 / 001 000 000
52. RF AGC
000～063
045 045
53. AFT SENS 000 / 001 001 001
54. R/G DRV 000 / 001 001 001
55. BLK SW 000 / 001 000 000
56. V S COR
000～015
011 011
57. V LIN
000～015
012 012
58. V SIZE
000～127
037 037
59. V AGC 000 / 001 000 000
60. TV AFC
000～003
001 001
61. EXT AFC
000～003
002 002
62. V POSI
000～007
000 000
63. H POSI
000～031
015 015
64. TV V FR
000～003
000 000
65. EXT V FR
000～003
003 003
66. STND BY 000 / 001 000 000
67. V RMP RE 000 / 001 001 001
68. V 48HZ 000 / 001 000 000
69. V EHT
000～007
000 000
70. H EHT
000～007
000 000
Page 17
No. 51834
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17
Initial settin g value
No. Setting (Adjustment) items Variable range
AV-N29302/S AV-N29302/R
71. V BLK L
000～003
000 000
72. V BLK U
000～003
001 001
73. CCD IN 000 / 001 000 000
74. H BLK 000 / 001 000 000
75. OVER MD 000 / 001 001 001
76. APACON L 000 / 001 001 001
77. RF S/N T 000 / 001 000 000
78. EX S/N T 000 / 001 000 000
79. R S/N V1
000～063
000 000
80. R S/N V2
000～063
000 000
81. R S/N V3
000～063
000 000
82. R S/N V4
000～063
000 000
83. E S/N V1
000～063
000 000
84. E S/N V2
000～063
000 000
85. E S/N V3
000～063
000 000
86. E S/N V4
000～063
000 000
87. COR LEV
000～003
000 000
88. VNR CHK
000～255
000 000
89. VC SN TM
000～255
000 000
90. VC SN SP
000～255
000 000
91. CH MUTE 000 / 001 000 000
92. OSD HP
000～031
018 018
93. OSD VP
000～031
008 008
94. FM TRAP 000 / 001 000 000
95. OSC SEL 000 / 001 001 001
96. SD SEL 000 / 001 001 001
97. VF LK EX 000 / 001 000 000
98. F LOCK
000～002
002 002
99. AFC HIGH
000～064
031 031
SOUND MODE
Initial settin g value
No. Setting (Adjustment) item Variable range
AV-N29302/S AV-N29302/R
1. IN LEVEL 000～063 024 024
2. FH MON 000 / 001 000 000
3. ST VCO 000～063 032 032
4. PILOT 000 / 001 000 000
5. FILTER 000～063 027 027
6. LOW SEP 000～063 014 014
7. HI SEP 000～063 021 021
8. 5FH MO N 000 / 001 000 000
9. SAP VCO 000～063 034 034
10. BBE BASS
±
010 -001 -001
11. BBE TRE
±
010 -001 -001
Page 18
No. 51834
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18
THEATER MODE
Initial settin g value
Setting (Adjustment) item Variable range
AV-N29302/S AV-N29302/R
TINT -20～+20 -06 -06
COLOR -20～+20 -05 -05
PICTURE -20～+20 -08 -08
BRIGHT -20～+20
±
00
±
00
DETAIL -20～+20 +03 +03
R CUT -20～+20
±
00
±
00
G CUT -20～+20
±
00
±
00
B CUT -20～+20
±
00
±
00
R DRIVE -99～+99 +06 +06
B DRIVE -99～+99 -18 -18
DC REST 0～3+01 +01
BLK ST 0～3
±
00
±
00
GMM PNT 0～3+01 +01
CD MAT 0～3+01 +01
RY GAIN 0～1+01 +01
GY PHAS 0～1
±
00
±
00
CORING 0～1+01 +01
CMP CD 0～3+01 +01
CMP RY 0～1+01 +01
CMP GY 0～1
±
00
±
00
CMP COR 0～1+01 +01
LOW LIGHT MODE
Setting (Adjustment) item Variable range Initial setting value
R CUTOFF
G CUTOFF
B CUTOFF
0～255
0～255
0～255
85
85
85
HIGH LIGHT MODE
Setting (Adjustment) item Variable range Initial setting value
G DRIVE
B DRIVE
0 ～ 255
0 ～ 255
60
60
RF AFC CHECK MODE
Setting (Adjustment) item Variable range Initial setting value
RF AFC
FINE
ON / OFF
FIXED
ON
FIXED
DO NOT
ADJUST
Page 19
No. 51834
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19
ADJUSTMENTS
B1 POWER SUPPLY
Item
Measuring
instrument
Test point Adjustment pa rt Description
Check of
B1 POWER
SUPPLY
DC Vol tmet e r
TP-91 (B1)
TP-E(
""""
)
1. Rec eive a bl ac k-and- white signal.
2. Connect the DC Voltmeter to TP-91 (B1) and TP-E(
""""
).
3. Confirm that the voltage is DC134V .
ADJUSTMENT OF VIDEO / CHROMA, DEFLECTIO N CIRCUIT
Item
Measuring
instrument
Test point Adjustment pa rt Description
RF. AGC
adjustment
No.52 RF AGC
1. Receive a broadcast.
2. Select “No.52 RF AGC” of the PICTURE MODE.
3. Press the MUTING key and turn off the color.
4. With the M ENU LEFT key, get nois e in th e screen p icture. ( 0
side of sett in g value)
5. Press the MENU RIGHT key an d stop when noise disap pears
from the screen.
6. Change to other channels and make sure that there is no
irregularity.
7. Press the MUTING key and get color out.
FOCUS
adjustment
Signal
generator
FOCUS VR
[In HVT]
1. Receive a crosshatch signal.
2. While looking at the screen, adjust FOCUS VR so that the
vertic al and hor i z ont al lines will be cl ear and in fin e det ail.
3. Make sure that the picture is in focus even when the screen gets
darkened.
+2V
-2.5V
Page 20
No. 51834
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20
Item
Measuring
instruments
Test point Adjustment pa rt Description
V.SIZE
Adjustment
Signal
generator
No.58 V.SIZE
1. Receive a crosshatch signal.
2. Select No.58 V.SIZE in the PICTURE MODE.
3. Set the initial setting value of No.58 V.SIZE with the LEFT /
RIGHT key of the MENU.
4. Adjust No.58 V.SIZ E until the vert ical scr een size becomes the
value as shown table below.
H.POSITION
Adjustment
Signal
generator
No.63 H.P OSI
1. Receive a crosshatch signal.
2. Select the No.63 H.POSI of the PICTURE MODE.
3. Set the init ial setti ng val ue of th e No.63 H .POSI with th e LEFT /
RIGHT key of the MENU.
4. Adjust the No.63 H.POSI until the screen will be horizontally
centered.
Screen size
Picture size
Screen
size
Picture
size
100%
Application model Vertical screen size
AV-N29302 /S 89.0%
AV-N29302 /R 92.0%
Page 21
No. 51834
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21
Item
Measuring
instruments
Test point Adjustment part Description
WHITE
BALANCE
(Low Light)
Adjustment
Signal
generator
BRIGHT
R. CU TOFF
G. CUTOFF
B. CU TOFF
SCREEN VR
[In HVT]
1. R eceive a black- and-white signal.(Color of f )
2. Select the LOW LIGHT MODE from the SERVICE MENU.
3. S et the init i al setting valu e of BRIG HT with th e L EFT / RIGHT
key of the remote control unit.
4. Set the i nitial s etting valu e of R CUTOF F, G CUT OFF an d B
CUTOFF with the ④or⑦key(R), ⑤or⑧key(G), ⑥or⑨key(B)
of the remote control unit.
5. D isplay a s ingle h orizont al line b y pressin g the ①key of the
remote control unit.
6. Turn the screen VR a l l the way to the left.
7. T urn the screen VR gr adually to the right f rom th e left u ntil
either one of the red, blue or green colors appears faintly.
8. Adjust the two colors which did not appear until th e single
horizontal line t hat is displayed becomes white using the
④
to ⑨ keys of the remot e c ontrol unit.
9. T urn the screen VR to wh ere the single hor izontal lin e glows
faintly.
10. Press the ② key to return to the regular screen.
＊
The ③ EXIT key is the cancel key for the WHITE
BALANCE.
WHITE
BALANCE
(High Light)
Adjustment
Signal
generator
G. DRIVE
B. DRI V E
1. R ec ei ve a monoscop e p attern sign al.
2. Select the【HIGH LIGHT】MODE in the SERVICE MENU.
3. S et t h e i nitial s ett i ng value of G D RI V E and B D RIVE w it h the
④, ⑦
and ⑥, ⑨ keys of the remote control unit.
4. Adjus t th e scr een unti l it b ecom es white us ing th e ④, ⑦,
⑥
and ⑨ keys of the remote control unit.
＊
The ③ E XIT key is th e canc el k ey f or th e W HIT E BALA NCE
mode.
[HIGH LIGHT] MODE
EXIT BY
IT
HIGH LIGHT
EXIT
***
******
******
******
***
G DRIVE
B DRIVE
Remote Control Unit Key Operation
①
key : H.LINE ON
②
key : H.LINE OFF
③
key : EXIT
④
key : G DRIVE
▲
⑦
key : G DRIVE
▼
⑥
key : B DRIVE
▲
⑨
key : B DRIVE
▼
BRIGHT
G CUTOFF
B CUTOFF
R CUTOFF
[LOW LIGHT] MODE
EXIT BY
IT
EXIT
***
******
***
***
******
***
BRIGHT
***
******
***
BRIGHT
***
******
***
1 2 3
6
987
54
REMOTE CONTROL UNIT
H.LINE ON EXITH.LINE OFF
R CUTOFF B CUTOFFG CUTOFF
R CUTOFF B CUTOFFG CUTOFF
Page 22
No. 51834
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Item
Measuring
instruments
Test point Adjustment part Description
SUB
BRIGHT
Adjustment
No.1 BRIGHT
1. Rec eive a broadcas t.
2. Select No.1 BRIGHT of the PICTURE MODE.
3. Set the initial setting valu e of the No.1 BRIGHT with the LEFT
/ RIGHT key of the MENU.
4. If the brigh tness is n ot best with th e init i al setti ng valu e, mak e
fine adjus t m ent of th e No.1 BRIG HT until you g et th e op timum
brightness.
SUB
CONTRAST
Adjustment
No.2 PICTURE
1. Rec eive a broadcas t.
2. Select No.2 PICTURE of the PICTURE MODE.
3. Set the initial setting value of the No.2 PICTURE with the
LEFT / RIGHT key of the MENU.
4. If the c ontrast is not best wit h the initial s etting valu e, make
fine adjustment of the No.2 PICTURE until you get the
optimum contrast.
[ Method of adjustment without measuring instrument ]
SUB COLOR
adjustment
Signal
generator
Oscilloscope
Remote
control unit
TP-R
TP-E(
####
)
[CRT
SOCKET
PWB]
No.3 COL OR
1. Receive a broadc as t .
2. Select “No.3 COLOR” of the PICTURE MODE.
3. Set the initial setting value of the “No.3 COLOR” with the
LEFT/RIGHT key of the MENU.
4. If the color is not the best with the Initial sett ing value, make fine
adjustment of the “No.3 COLOR” until you get the optimum
color.
[ Method of adjustment using measuring instrument ]
1. Input the full field color bar signal (75% white).
2. Select “No.3 COLOR” to the PICTURE MODE.
3. Set the initial setting value of the “No.3. COLOR” with the
LEFT/RIGHT key of the MENU.
4. Connect the osci lloscop e bet w een TP -R an d TP -E.
5. Adjust COLOR and bring the value of
(A)
in the il l u st ra tio n to the
voltage
+20V
(V
W-R
).
Y
WWWW
Cy
G
Mg
RRRR
B
(A)
0V
(-)
(+)
Page 23
No. 51834
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Item
Measuring
instruments
Test point Adjustment part Description
[ Method of adjustment without measuring instrument ]
SUB TINT
adjustment
Signal
generator
Oscilloscope
Remote
control unit
TP-R
TP-E(
####
)
[CRT
SOCKET
PWB]
No.4 TINT
1. Receive a broadc as t .
2. Select “No.4 TINT” of the PICTURE MODE.
3. Set the initial setting value of the “No.4 TINT” with the
LEFT/RIGHT key of the MENU.
4. If the tint is not the best with the initi al setting val ue, make f ine
adjust m ent of the “No.4 TI NT” until you g et th e optimum tint.
[ Method of adjustment using measuring instrument ]
1. Input the full field color bar signal (75% white).
2. Select “No.4 TINT” to the PICTURE MODE.
3. Set the initial setting value of the “No.4 TINT” with the
LEFT/RIGHT key to the MENU.
4. Connect t h e osc i ll oscope bet ween TP-R an d TP- E.
5. Adjus t TINT and br ing the val ue of
(B)
in the illustr ation to the
voltage
+17V
(V
W-Y
).
YYYY
WWWW
Cy
G
Mg
R
B
(B)
0V
(-)
(+)
Page 24
No. 51834
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24
ADJUSTMENT OF MTS CIRCUIT
Item
Measuring
instrument
Test point Adjustm ent part Description
MTS INPUT
LEVEL
check
No.1 IN LEVEL
1. Select the “No.1 IN LEVEL” of the SOUND MODE.
2. V erify that the “No. 1 IN LEVEL” is s et at its ini t i al s etting valu e.
MTS STEREO
VCO
adjustment
Signal
generator
Frequency
counter
R OUT
[AUDIO OUT]
No.2 FH MO N.
No.3 ST VCO
1. R ec eive a RF signal (non-modulat ed sound sign al) from the
antenna terminal.
2. S elect the “No.2 FH MON.” of SOUND MODE, an d ch ange the
setting v al u e fr om 0 to 1.
3. Connect the Frequency Counter to R OUT RCA pin of the
AUDIO OUT.
4. Select the “No.3 ST VCO”.
5. Set the initial setting value of the “No.3 ST VCO” with the
LEFT/RIGHT key of the menu.
6. Adj ust t h e “N o.3 ST VCO” s o that t he Fr eq uenc y C ount er w ill
displ ay 15. 73 kHz±0.1kHz.
7. S elect the “No.2 FH MON .” of the SOUND MODE , and reset
the setting value from 1 to 0.
MTS SAP
VCO
adjustment
Signal
generator
Frequency
counter
【【【【
MPX
】】】】
Connector
【【【【4】】】】
pin SDA
【【【【3】】】】
pin GND
R OUT
[AUDIO OUT]
No.8 5FH MON.
No.9 SAP V C O
1. Receive a RF sign al (non modul ated sound si gnal) fr om the
antenna terminal.
2. Connect between pin【4】of【MPX】connector and GND (Pin
【3】of【
MPX】connector) through 1MΩ Resistor.
3. Select the “No.8 5FH MON. ” of the SOUND MODE, and reset
the setting value from 0 to 1.
4. Connect the Frequenc y Counter to R OUT RCA pin of the
AUDIO OUT.
5. Select the “No.9 SAP VCO”.
6. Set the initial setting value of “No.9 SAP VCO” with the
LEFT/RIGHT key of the menu.
7. Adjust the “No.9 SAP VCO” so that the Frequency Counter will
displ ay 78. 67 kHz±0.5kHz.
8. Select the “No.8 5FH MON. ” of the SOUND MODE, and reset
the setting value from 1 to 0.
Page 25
No. 51834
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25
Item
Measuring
instrument
Test point Adjustment pa rt Description
MTS FILTER
check
No.5 FILTER
1. Select the “No.5 FILTER” of th e SOU ND MODE.
2. Verify that the “No.5 FILTER” is set at its initial setting value.
MTS
SEPARATION
adjustment
TV audio
multiplex
signal
generator
Oscilloscope
L OUT
R OUT
[AUDIO OUT]
No.6 LOW SEP.
No.7 HI SEP.
1. Input a stereo L signal (300Hz) from the TV audio multiplex
signal generator to the antenn a t erm in al.
2. Connect an oscil l oscope t o L OUT RCA pi n of the AUDIO OU T ,
and display one cycle portion of the 300Hz signal.
3. Change the connection of the oscilloscope to R OUT RCA pin of
the AUDIO OUT, and enlarge the vol t age axis.
4. S elect the “No.6 LOW SEP.” of the SOUND MODE.
5. Set the i nitial setting value of the “No.6 LOW SEP.” with the
LEFT/RIGHT key of the menu.
6. Adjust the “No.6 LOW SEP.” s o that the stroke element of the
300Hz sig n al wi ll b ec om e mi nimum.
7. Ch ange the sign al to 3kHz, and similar ly adjust th e “No.7 HI
SEP.”.
L-Channel
signal wave form
R-Channe l
crosstalk por t i on
Minimum
1 cycl e
Page 26
No. 51834
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26
HOW TO CHECK THE HIGH VOLTAGE HOLD DOWN CIRCUIT
1. HIGH VOLTAGE HOLD DOWN CIRCUIT
After rep airing the high v oltage hold down circ uit sh ow n in Fi g. 1.
This circuit shall be checked to operate correctly.
2. CHECKING OF THE HIGH VOLTAGE HOLD DOWN CIRC UIT
(1) Turn the power switch to on.
(2) As shown in Fig. 1, set the resistor between X
connector 1 and 3 .
(3) Make sure that the screen picture disappears.
(4) Temp or ar il y un plug the pow er pl ug.
(5) Remove the resistor replaced X
connector 1 and 3 .
(6) Again plug the power plug, make sure that the normal picture is displayed on the screen.
Fig. 1
4
T522
CONNECTOR
RESISTOR
18.84k
Ω±
Ω±Ω±
Ω±
1%1/4W
HEATER
R562
D561
R561
X
C561
R563
D562
3 2 1
Q561
D563
Q562
Q953
D957
R957
T921
POWER
ON OFF
C562
R564
D565
BW
Page 27
No. 51834
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27
SELF CHECK FUNCTIONS
1. Outline
This model has self ch eck func t i ons gi ven below. When a malf unc ti on has been d etected, th e POWER is turn ed off and the LE D f l ashes to
inform of the failure . The malfunction is detected by the signal input state of the control line connected to the microcomputer.
2. Self check items
Check item Details of detection M ethod of dete ctio n State of malfunct ion
CRT NECK protector
Also detected if the
power su pply lin e output
from the HVT (High
voltage Transformer) has
shorted with the ground.
W hen th e ve rt ic al ci rcu it Scorrection capacitor C427
is shorted, detect the
potenti al drop of the C427,
and prevent the burn
damage to the CRT NECK.
(Grounding of shorting of
the power supply output
from the HVT to the vertical
circuit, and the smal l sign al
power supply is also
detected.)
The microcomputer detects at 1
second intervals.
If NG is detected for more than 1
ms, a malfu nc ti on is interpreted.
When a malfunction has been
detected, the POWER is turned
off. While the POWER is being
turned off , the power key of the
remote contr oller is not op er ation al
until the power code is taken out
and put in ag ain.
3. Self check indicating function
The self-c heck funct ion begins detecti on about 5 s econds after
power is supplied.
In the event a malfunction is detected, the power is cut off
immediately.
At this time, the ON-TIMER LED flashes to inform of the
malfunction.
[ON-TIMER LED indication]
The ON-TIMER LED flashes at 0.5 seconds intervals.
POWER
Supplied
After about
5 seconds
Malfunction
is detected
POWER OFF
Flashin
g
ON-TIMER LED
Start of
detection
Page 28
No. 51834
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28
REPLACEMENT OF CHIP COMPONENT
!
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 removi n g it .
!
SOLDERING IRON
1. Use a high ins ul ati on soldering iron with a t hi n p oint ed end of it.
2. A 30w soldering iron is recommended for easily removing parts.
!
REPLACEMENT STEPS
1.
How to remove Chip parts
#
Resistor s, ca pa ci t or s, et c.
(1) As shown in the f igure, pus h the p art with t weezers and
alternat ely melt th e s old er at eac h en d.
(2) Shift with tw eez er s an d rem o ve t h e ch ip p ar t.
#
Transistors, diodes, variable resistors, etc.
(1) Apply extra solder to each lead.
(2) As shown in the f igure, pus h the p art with t weezers and
alternat ely melt th e solder at each l ead. Shift and remov e
the chip part.
Note : Afte r rem oving t he part, rem ove rema ining so lder fr om
the pattern.
2. How t o i nst al l Chip p arts
#
Resistor s, ca pa ci t or s, et c.
(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 h eat and melt the sold er at both en ds 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.
SOLDER
SOLDER
A
B
C
A
B
C
Page 29
N29302S-MEM #3
N29302R-MEM #3
4
Printed in Japan
VP 0108
DP3051
V
ICTOR COMPANY OF JAPAN, LIMITED
HOME AV NETWORK BUSINESS UNIT 12, 3-chome, Moriya-cho, Kanagawa-ku, Yokohama, Kanagawa-prefecture, 221-8528, Japan
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