JVC AV-N29220 Service Manual

A

SER VICE MANUAL

COLOR TELEVISION

V-N29220

BASIC CHASSIS

AV-N29220
AV-N29220

/R

/S

FV4

CONTENTS

SPECIFICATIONS

!

SAFETY PRECAUTIONS

!

FEATURES

!

MAIN DIFFERENCE LIST

!

HOW TO IDENTIFY M OD ELS

!

FUNCTIONS

!

SPECIFIC SERVICE INSTRUCTIONS

!

SERVICE ADJUSTMENTS

!

PARTS LIST

!

★

OPERATING INSTRUCTIONS

★

STANDARD CIRCUIT DIAGRAM

1

････････････････････････････････

････････････････････････････････ ････････････････････････････････

････････････････････････････････････････････････････････････････

････････････････････････････････

････････････････････････････････ ･････････････････････････････

････････････････････････････････････････････････････････････････

････････････････････････････････

････････････････････････････････ ･･･････････････････････

････････････････････････････････････････････････････････････････

････････････････････････････････ ･･･

････････････････････････････････････････････････････････････････

････････････････････････････････

････････････････････････････････ ･･･････････････････････

････････････････････････････････････････････････････････････････

････････････････････････････････

････････････････････････････････ ････････････････････

････････････････････････････････････････････････････････････････

････････････････････････････････

････････････････････････････････ ････････････････････････････････

････････････････････････････････････････････････････････････････

････････････････････････････････

････････････････････････････････ ･････････････

････････････････････････････････････････････････････････････････

････････････････････････････････

････････････････････････････････ ･････････････････････

････････････････････････････････････････････････････････････････

････････････････････････････････

････････････････････････････････ ････････････････････････････････

････････････････････････････････････････････････････････････････

････････････････････････････････

････････････････････････････････ ････････････････

････････････････････････････････････････････････････････････････

COPYRIGHT © 2001 VICTOR COMPANY OF JAPAN, LTD.

･････････････････････････････

･･････････････････････････････････････････････････････････

･･･････････････････････

･･････････････････････････････････････････････

･･･････････････････････

･･････････････････････････････････････････････

････････････････････

････････････････････････････････････････

････････････････････････････････ ･･

････････････････････････････････････････････････････････････････

･････････････

･･････････････････････････

･････････････････････

･･････････････････････････････････････････

････････････････････････････････ ････

････････････････････････････････････････････････････････････････

････････････････

････････････････････････････････

･･･

･･････

･･

････

10
25

2-1

2
3
4
4
4
5
6

No.51833

Sep. 2001

Sept. 2001

A

V-N29220

SPECIFICATIONS

Items

AV-N29220

Contents

/R

AV-N29220

/S

Dimensions (W
Mass

TV RF System
Color Sound Syste m

TV Receiving Channels and Frequency

VL Band
VH Band
UHF Band

CATV Receiving Channels an d Frequenc y

Low Band
High Band
Mid Band
Super Band
Hyper Ba n d
Ultr a B a nd
Sub Mid Band

TV/CATV Total Channel

Intermediate Frequency

Video IF Carrier
Sound IF Carrier

Color Sub Carrier

××××H××××

D)

654mm×593mm×495mm

31.1 kg
CCIR(M)
NTSC, BTSC System (Multi Channel Sound)

(02～06) 54MHz～88MHz
(07～13) 174MHz～216MHz
(14～69) 470MHz～806MHz

(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 (01, 96～99)
180 Channels

45.75MHz

41.25MHz (4.5MHz)

3.58MHz

(54MHz～804MHz)

Power Input
Power Consumption

Picture Tube
High Voltage

Speaker
Audio Power Out put

Input

Video Input
Audio Input (R/L)

S-Video

Variable Audio Outp ut (R /L)

Antenna terminal
Remote Control Unit

120V AC, 60Hz
113W

29” (68cm) M eas ured Diag on ally
29kV±1kV (at zer o b eam current)

5×9cm Oval type×2

1.2W×2

1Vp-p, 7 5Ω (RCA pin jack)
500mVrms ( -4dBs ), High Impedance (RCA pin jack)

Y: 1Vp-p Pos it i v e (negati ve s ync pr ovi ded, when termin at ed wi th 7 5Ω)
C: 0.286V

More than 0～1550mVrms (+6dBs)
Low imped ance (400H z w h en m odulat ed 10 0%)
(RCA pin jack)

75Ω(VHF/UHF) Terminal, F-Type Connector
RM-C306

(AA/R6/UM-3 b atter y×2)

(burst signal, when terminated with 75Ω)

p-p

Design & specifications are subject to change without notice.

2

No.51833

A

SAFETY PRECAUTIONS

V-N29220

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. Qualified personnel should perform Service only.

2. Alterations of the design or circuitry of the products should not be
made. Any design alterations or additions will void the
manuf act urer's warr an ty and will fur t h er reli ev e t h e manufactur er
of responsi bility f or person al injury or pr operty dam age res ulting
therefrom.

3. Many electrical and mechanical parts in the products have
special safety-related characteristics. These characteristics are
often not evident f rom visual i nspection nor can t he protect ion
afford ed by them n ecess arily be obt ained by using rep lacem ent
compon ents rated f or higher voltag e, watt ag e, etc. R epl acem ent
parts that h ave these s pecial s afety c h arac teristic s are iden tified
in the parts list of Service manual.

having such features are identified by shading on the
schemati c s and b y (

The use of a s ubstitute replacement which d oes not have the
same saf ety characteris tics as the r ecommended repl acemen t
part show n in the p arts lis t of S ervic e m anual m ay caus e s hoc k,
fire, or other hazards.

) on the parts list in Serv ice manu al.

!!!!

Electrical components

4.

Don't short b etween the LIV E side groun d 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 th e GND is show n b y t h e LI V E : (") 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 meas ure with a measuri ng apparatus (osc illoscope etc .)
the LIVE side GND and ISOLATED(NEUTRAL) side GND or
EARTH side GND at the same time.
If above not e wi ll n ot be kept, a fuse or any parts w ill be br ok en.

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 hig h voltage app lied t o the picture t ube must c onform wit h
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
voltag e conditions s hould b e kept to a mi nimum, or sh ould be
prevented. If severe arcing occurs, remove the AC power
immediately and determine the cause by visual inspection
(incorrect inst allation, crack ed or melted high voltage harness,
poor solderi ng, etc.). To maintain the pr oper minimum le vel 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 l ead to th e g roun d fr am e and c on necti ng t h e oth er end of
the lead through a 10k! 2W resistor t o the an ode button .

8. W hen servic e is requir ed, obser ve the origin al lead dress . Extr a
precaut ion shou ld be gi ven to assure c orrect l ead dr ess in t he
high voltage circuit area. W here a short circuit has occurred,
those comp onents that in dicat e evidenc e of over heating should
be replaced. Always use the manufacturer's replacement
components.

9.

Isolation Check
(Saf ety for Electrical Shock Hazard)

After re-assembling the product, always perform an isolation
check on the exposed metal parts of the cabinet (antenna
termin als , vid eo/ au dio inpu t an d output term in als , Control kn obs ,
metal cabinet, screw"heads, ear phone jac k, control shafts, etc.)
to be sure the product is safe to operate without danger of
electrical shock.

(1)

Dielectric Stren g th T est

The isol ation b etween th e AC pr imar y circuit and all metal parts
expos ed t o th e user, p ar tic u larly any exp osed metal part having a
return p ath to the chassis should withst and a voltage of 3000V
AC (r.m.s .) for a peri od of on e s ec ond.

(. . . . W ithstand a voltag e of 1100 V AC ( r.m.s.) to an applianc e

rated up t o 120V, and 3000V AC (r. m.s.) t o an appl iance rat ed
200V or mor e, f or a peri od of on e s ec on d.)
This method of test requir es test equi pment not gen erally f ound
in the service trade.

(2)

Leak age Current Check

Plug the AC lin e c or d dir ec t l y int o t he AC outl et (do not use a l in e
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. ). An y leak age c urr ent mus t 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 lin e c or d dir ec t l y int o t he AC outl et (do not use a l in e
isolati on transform er during t his check. ). Use an AC voltmet er
having 1000 ohms per volt or more sensitivity in the following
manner. Connect a 1 500! 10W resistor paralleled by a 0.15#F
AC-typ e capacitor betw een an expos ed metal part and a know n
good earth ground (water pipe, etc.). Measure the AC voltage
across the resistor with the AC voltmeter. Move the resistor
connect ion t o each exp os ed met al p art, part icul arl y any exp osed
metal part h avin g a return p ath to th e chassis , and meas ure th e
AC voltag e across the res istor. N ow, re vers e 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 , i n t ropic al area, this m us t not exceed 0.3 V AC ( r . m.s . ).
This corresponds to 0.2mA AC (r.m.s.).

0.15μF AC-TYPE

1500

GOOD EARTH GROUND

!

AC VOLTMETER
(HAVING 1000
OR MORE SENSITIVITY)

10W

!

/V,

PLACE THIS PROBE
ON EACH EXPOSED
METAL PART

No.51833

3

A

V-N29220

FEATURES

N ew c has si s d esi gn en ables us e of a s ing le b oard w ith si mpl if ied

"

circuitry.

Provided with miniature tuner (TV/CATV).

"

Multifunctional remote control permits picture adjustment.

"

Adopti on of t he C HA N N E L G U A R D fu nc t ion pr event s th e s p ec if i c

"

channels from being selected, unless the “ID number” is key in.

2

C bus control utilizes single chip ICs.

I

"

Adoption of the VIDEO STATUS function.

"

Adoption of the ON/OFF TIMER function.

"

Built-in V-CHIP system.

"

"

"
"
"
"
"
"
"
"

MAIN DIFFERENCE LIST

!!!!

Parts Name

MAIN PWB SFV-1071A-M2 SFV-1074A-M2

!

PICTURE TUBE (ITC) A68ADT25X881 A68QDN891X001

Model name

AV-N29220

/R

With 75ΩV/U in common (F-Type) ANT Terminal.
SLEEP TIMER for setting in real time.
Closed-caption broadcasts can be viewed.
Audio Video input terminal.
Built-in MTS system.
Built-in HYPER-SURROUND system.
S-VIDEO input terminal for taking best advantage of Super VHS.
Variable Audio output terminal.
2 LINE Digital Comb filter Improved picture quality.

AV-N29220

/S

HOW TO IDENTIFY MODELS

The difference between
As the result of the difference in

!

Parts name

RATING LABEL GQ20001-001A-A

!

AV-N29220/R

MODEL

and

AV- N29220/S

PICTURE TUBE

AV-N29220

INDICATED AV-N29220 INDICATED AV-N29220

, the

MAIN PWB

INDICATED

is in the

/R

PICTURE TUBE

also differ.

““““R””””

.

AV-N29220

←←←←

INDICATED

/S

““““S””””

4

No.51833

A

FUNCTIONS

FRONT CONTROL KEYS

■

V-N29220

1

①

INPUT 2 (V, L/MONO, R) terminals

②

MENU button

③

CHANNEL - (Operate ) button

④

CHANNEL + (Operate ) button

⑤

VOLUME - button

REMOTE CONTROL UNIT

■■■■

1

2

3

4

2 3 4 5 6 7 8 9

⑥

VOLUME + button

⑦

REMOCON window

⑧

INDICATOR lamp (TIMER / POWER)

⑨

POWER button

REAR TERM INAL

■

9

10

11

5
6

①

7

8

12

13
14

15

①

TV / CATV select key

②

VCR / DVD select keys

③

VIDEO STATUS k ey

④

DISPLAY key

⑤

SLEEP TIMER key

⑥

HYPER SURROUND key

⑦

MUTING key

⑧

MENU key

INPUT1 (S-VIDEO, V, L/MONO, R) terminal

②

AUDIO OUTPUT terminal (Variable)

③

ANTENNA terminal

1

2

⑨

POWER key

⑩

INPUT key

⑪

CHANNEL select key

⑫

V-CHIP key

⑬

FUNCTION key

⑭

EXIT key

⑮

VCR / DVD control key

3

No. 51833

5

A

V-N29220

SPECIFIC SERVICE INSTRUCTIONS

DISASSEMBLY PROCEDURE

REMOVING THE REAR COVER

1. Unplug the power supply cord.

2. Remo ve the 7 scr ews marked
shown in Fig.1.

3. Withdraw the REAR COVER toward you.

[CAUTION]

W hen reinst alling the r ear cover, carefull y push it inward after

"

inserting the MAIN PWB into the rear cover groove.

and 2 scr ews marked

!!!!

REMOVING THE MAIN PW BOARD

After removing the rear cover.

"

1. Pic k this si de of t he MA IN PW B and r aise on e slig htl y, take off
the PWB stopper marked

2. Pull out t h e MAIN PW B as it is.
(If necessary, t ak e of f the wire clamp an d connectors, etc.)

from the cabinet bottom.

####

""""

as

REMOVING THE SPEAKER

After removing the MAIN PW board.

"

1. Remove the 2 screws marked

2. Withdraw the speaker backward.

3. Follow the same steps when removing the other hand speaker.

as shown in Fig. 1.

$$$$

CHECKING THE MAIN PW BOARD

1. To chec k th e back side of th e MA IN PW Board.

1) Pull out the MAIN PWB. (Refer to REMOVING THE MAIN
PWB).

2) Erect the ch assis vertically s o that you can easil y check the
back side of the MAIN PW Board.

[CAUTION]

When erecting the MAIN PWB, be careful so that there will be no

"

co n tac ti ng wit h ot her PW Boar d .

Befor e turning on pow er , m ak e sur e that th e CRT earth wir e and

"

other connectors are properly connected.

WIRE CLAMPING AND CABLE TYING

1. Be sure clamp the wire.

2. Never remove the cable tie used for tying the wires together.
Should i t be in ad vertent l y removed, be s ur e to ti e t h e w ir es with
a new cable tie.

6

No.51833

A

FRONT CABINET

V-N29220

CRT SOCKET PWB

(Wit hin MAIN PW B)

SPEAKER

D

MAIN PWB

SPEAKER

REAR COVER

CONTROL KNOB

D

PB STOPPER

C

B

A

Fig.1

No.51833

7

A

V-N29220

(CW)

MEMORY I C REPLAC EMENT

1. Memory IC

This model use 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 procedure

Procedure Screen display

(1) Power off

Switch off the power and dis connec t th e pow er c or d from the out l et.

(2) Replace the memory IC

Initial val ue must 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) S ystem constant ch eck and setting

1) Press

SLEEP TIMER

” is being displayed, p ress

MIN.

key and, while the indic ation of “

DISPLAY

key and

VIDEO STATUS

SLEEP TIMER 0

on the remote control unit simultaneously.

2) The SERVICE MENU screen of Fig.1 is displayed.

3) While th e SERVICE MENU is dis played, again simul taneously press
the

DISPLAY

and

VIDEO STATUS

keys t o displ ay the Fi g.2 S YSTEM

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 s etting item wit h the
key and adjust the setting with the

MENU LEFT/RIGHT

MENU UP/DOWN

keys. (The

letters of the selected item are displayed in yellow.)

5) After adjusting, release the

MENU LEFT/RIGHT

key to store the se t ting

value.

6) Press the

key twice to return the normal screen.

EXIT

(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 OPERATING INSTRUCTIONS
(USER'S GUIDE) and set the items as described.

key

SERVICE MENU
PICTURE SOUND

GAME
LOW LIGHT HIGH LIGHT
RF AFC CHK
VCO

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

Indicated Model No.

(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.

8

No.51833

A

TABLE 1 (System Constant setting)

Setting item Setting content

MODEL Display the each applicat i on m od el Comfor t abl e m o d el nam e

AV-N29220/R AV-N29220/S

Setting value

V-N29220

V-CHIP YES YES

CAN V-CHIP YES YES

YES NO

YES

NO

TABLE 2 (User setting value)

Setting item Setting value

1. Use remote controller keys
POWER
CHANNEL
CHANNEL PRESET
VOLUME
INPUT (TV/VIDEO)
DISPLAY
SLEEP TIMER
VIDEO STATUS
HYPER SURROUND

2. Settin g of ME NU
TINT
COLOR
PICTURE
BRIGHT
DETAIL
NOISE MUTING
SET VIDEO STATUS
BASS
TREBLE
BALANCE
MTS
TV SPEAKER
SET CLOCK
ON/OFF TIMER
LANGUAGE
CLOSED CAPTION
BACKGROUND
AUTO TUNER SETUP
CHANNEL SUMMARY
V-CHIP
SET LOCK CODE

OFF
CH 02
See OPERATING INSTRUCTIONS.
10
TV
OFF
0
STANDARD
OFF

CENTER
CENTER
CENTER
CENTER
CENTER
ON
ALL CENTER
CENTER
CENTER
CENTER
STEREO
ON
Unnecessary to set
NO
SPANISH
OFF
BLACK
TUNER MODE : AIR
Unnecessary to set
OFF
Unnecessary to set

No.51833

9

A

V-N29220

(

)

(

)

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 op timu m condi tion may
differ from the initial settings.

3. Make sure that AC power is turned on correctly.

4. T urn on the p ower f or set and t est equip 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,
condensers, etc .

7. Pres et ti ng b efore adjus t m ent .
Unless otherwise specified in the adjustment instructions,
preset the following functions with the remote control unit:

VIDEO STATUS STANDARD
BASS, TREBLE,

BALANCE
HYPER SURROUND
TINT, COLOR,

PICTURE, BRIGHT,
DETAIL

CENTER
OFF

CENTER

ADJUSTMENT EQUIPMENT

1. DC volt meter (or digital vol t meter)

2. Oscilloscope

3. Signal generator (Pa ttern generator)［NTSC

］

4. Remote control unit

5. TV audio multiplex signal generator.

6. Frequency counter

ADJUSTMENT LOCATIONS

FRONT

DEG.

R926

POWER

PW

F902

R927

F901

TP-91
(B1)

TP-E
( )

VOL+ VOL- CH+ CH- MENU

TP-12B

T131 CW

CW

31

51

MPX

IC201

IC702IC701

MEMORY

T

ADJUSTMENT ITEMS

Adjustment items Adjustment items Adjustment items

B1 POWER
SUPPLY

IF VCO
RF. AGC

FOCUS
V. SIZE SUB COLOR
H. POSITION

S

STEREO

MAIN PWB

U

WHITE BALANCE
(Low Ligh t)

WHITE BALANCE
(High Light )

MTS INPUT
LEVEL check

MTS STEREO
VCO

SUB BRIGHT MTS SAP VCO
SUB CONTRAST MTS FILTER check

MTS
SEPARATION

SUB TINT

IC421

CRT SOCKET PWB

HV

Within MAIN P WB ASS'Y

TP-R

TOP

U

TUNER

IC921

AV IN OUT

S-IN

10

No.51833

T522

UPPER : FOCUS
LOWER : SCREEN

Q522

T

SOLDER SIDE

TP-E

E1

CRT EARTH

(BRAIDED ASS'Y)

A

BASIC OPERATION OF SERVICE MENU

1. TOOL OF SERVICE MENU OPER AT ION

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

"

SOUND

"

GAME

"

LOW LIGHT

"

HIGH LIGHT

"

RF AFC CHK

"

VCO (CW)

"

････････････････････

･････････････････････

･･･････････････････････

･･････････････････

･････････････････
･････････････････

･･･････････････････

3. Basic Opera ti o ns of th e SER VI C E M EN U
(1) How to enter the SERVICE MENU.

Press

STATUS

SLEEP TIMER

key on the remote control unit simultaneously to enter the

key and, while the ind ication of “

(2) SERVICE MENU screen selection

Press the UP / DOWN key of the MENU to select any of the following items.
(The lett ers of t h e sel ec t ed it ems are disp l ayed in yellow .)

PICTURE

●

GAME

●

LOW LIGHT

●

RF AFC CHK

●

VCO(CW)

●

This sets the setting values (adjustment values) of the VIDEO/CHROMA and DEFLECTION circuits.
This sets the setting values (adjustment values) of the AUDIO circuit.
This is used when the GAME MODE is adjusted.
This sets the setting values (adjustment values) of the WHITE BALANCE circuit.
This sets the setting values (adjustment values) of the WHITE BALANCE circuit.
This is used when the IF VCO is adjusted.

[Do not adjust]

This is used when the IF VCO is adjusted.

” is being displayed, press

screen ① shown in the next figure page.

SOUND

●

HIGH LIGHT

●

SLEEP TIM ER 0 MIN.

SERVICE MENU

DISPLAY

V-N29220

key and

VIDEO

(3) Enter the any setting ( adjustment ) mode

PICTURE and SOUND mode

"

1) If select any of PICTURE or SOUND items, and the LEFT / RIGHT key is pressed from SERVICE MENU ( MAIN MENU ), the screen
will be displayed as shown in figure page later.

②

2) Then the UP / DOWN key is pressed, the PICTURE mode screen ③ or the SOUND mode screen ④ is displayed, and the PICTURE

or SOUND setting can be performed.

GAME, LOW L IGHT, HIGH LIGHT, RF AFC CHK and VCO (CW) mode

"

1) If selec t any of GA ME / LOW LI GHT / HIG H L IGH T / RF AFC C H K / V CO (CW) items, an d th e LE FT / R IGHT ke y is pr ess ed f r om

SERVICE MENU ( MAIN MENU ), the screens ⑤ ⑥ ⑦ ⑧ ⑨ will be displayed as shown in figure page later.

2) Then the s ett in gs or verific ati ons c an be performed.

No. 51833

11

A

V-N29220

SERVICE MENU (MAIN MENU)

①①①①

SERVICE MENU

PICTURE SOUND
GAME
LOW LIGHT HIGH LIGHT
RF AFC CHK
VCO(CW)

SELECT BY EXIT BY
OPERATE BY

HIGH LIGHT MODE

⑦⑦⑦⑦

HIGH LIGHT

***

***

******

RF AFC CHK MODE [DO NOT ADJUST]

⑧⑧⑧⑧

***

***

******

EXIT BY

EXIT

EXIT

SCREEN

②②②②

IT

IT

SELECT BY

④④④④

1. IN LEVEL
STATUS

SELECT BY
OPERATE BY

SOUND MODE

EXIT BY

EXIT

***

******

********

********

****************

EXIT BY

EXIT

***

IT

IT

SELECT BY
OPERATE BY

1. BRIGHT
STATUS

PICTURE MODE

③③③③

********

********

****************

EXIT BY

EXIT

***

***

******

IT

RF AFC
FINE
STATUS

SELECT BY
OPERATE BY

VCO (CW) MODE

⑨⑨⑨⑨

TOO HIGH
ABOVE REFERENCE
BELOW REFERENCE
TOO LOW

SYNC : YES

***

***

******

********

********

****************

EXIT BY

EXIT

EXIT BY

EXIT

ON

IT

GAME MODE

⑤⑤⑤⑤

TINT
COLOR
PICTURE
BRIGHT
DETAIL

IT

SELECT BY
OPERATE BY

BRIGHT

***

***

******

***

***

******
***

***

******

***

***

******
***

***

******

LOW LIGHT MODE

⑥⑥⑥⑥

***

***

BRIGHT

******

***

*** ****** ***

*** ***

EXIT BY

** ***

** ***** ***

EXIT BY

EXIT

EXIT

IT

IT

12

No. 51833

A

(4) Setting method

1) UP / DOWN key of the MENU

Select the SETTING ITEM.

2) LEFT / RIGHT key of the MENU

Setting (adjust) the SETTING VALUE of the SETTING ITEM.
When the key is released the SETTING VALUE will be stored
(memorized).

3) EXIT key

Returns to the previous screen.

(5) Releasing SERVICE MENU

1) After returning to the SERVICE MENU upon completion of the setting

(adjust m ent ) w or k, pr ess the EXIT k ey ag ai n.

The s ettings f or LOW LIGHT and H IGH LIGHT are descr ibed in t he W HITE

★

BALANCE page of ADJUSTMENT.
The setting for VCO (CW) are described in the IF VCO page of ADJUSTMENT.

★

1. BRIGHT
STATUS

SELECT BY
OPERATE BY

PICTURE MODE

SETTING
ITEM

1. IN LEVEL
STATUS

SELECT BY
OPERATE BY

SOUND MODE

***

***

******

********

********

****************

EXIT BY

EXIT

***

***

******

********

********

****************

EXIT BY

EXIT

IT

IT

V-N29220

INITIAL
SETTING VALUE

↓ (Adjus t)

SETTING VALUE

The letter of the selected
Items are dis played in y ell ow .

TINT
COLOR
PICTURE
BRIGHT
DETAIL

SELECT BY
OPERATE BY

***

***

******

***

***

******

***

***

******

***

***

******

***

***

******

GAME MODE

EXIT BY

EXIT

IT

No. 51833

13

A

V-N29220

INITIAL SETTING VALUE OF SERVICE MENU

1. Adjustment of the SERVICE MENU is made on the basis of the initial setting values; however, the new setting values which set the screen
in its optimum condition may differ from the initial setting.

2. Do not change the initial setting values of the setting (Adjustment) items not listed in “ADJUSTMENT”.

PICTURE MODE

""""

The four setti n g it ems in the vi d eo m ode No.7 EXT B RI., No.8 E XT P IC., No.11 E XT TINT and No.12 EXT CO L . are li nk ed to th e it ems in

#

the TV MODE N o.1 BRIGHT, No.2 PICTUR E, No.5 TINT and No.6 CO LOR, respectivel y. W hen the setting items in the TV mode are
adjust ed, th e val u es in th e s etting it ems i n the video mode ar e r evised au t om at ically t o the same valu es in th e T V m od e.( T h e initial setting
values given in ( ) are off-set values.)

When the four items (No.7, 8, 11 and 12) are adjus t ed in the video mode, the s ett i ng v al u es in eac h it em ar e revi sed ind ep endently.

#

No. Setting (Adjustment) items Variable range initial setting value

1. BRIGHT

2. PICTURE

3. TV DTL(TV DETAIL)

4. TV BPF(TV B.P.FILTER) 0 / 1 0

5. TINT

6. COLOR

7. EXT BRI.(EXT.BRIGHT)

8. EXT PIC.(EXT.PICTURE)

9. EXT DTL(EXT.DETA IL)

10. EXT BPF(EX T.B.P .FILTER) 0 / 1 0

11. EXT TINT

12. EXT COL.(EXT.COLOR)

13. V SIZE

14. V CENT.(V.CENTER)

15. H POS.(H.POSITION)

16. OSD HP (OSD H POSITION)

17. OSD VP (OSD V POSITION)

18. H. AFC 0 / 1 0

19. RF AGC

SOUND MODE

"

0 ～ 127
0 ～ 127
0 ～ 63

0 ～ 127
0 ～ 127

25

±

25 (±0)

±

0 ～ 63

25 (±0)

±

25

±

0 ～ 63
0 ～ 7
0 ～ 31
0 ～ 31
0 ～ 15

0 ～ 63

64
77
26

66
50

(-2)

26

(+1)

38

0
18
23
14

40

No. Setting (Adjustment) item Variable range Initial setting value

1. IN LEVEL (INPUT LEVEL) 0～63 29

2. FH MON. (FM MONITOR) 0 / 1 0

3. ST VCO (STEREO VCO) 0～63 20

4. PILOT (PILOT CANCELER) 0 / 1 0

5. FILTER 0～63 25

6. LOW SEP. (LOW SEPARATION) 0～63 32

7. HI SEP. (HI SEPARATION) 0～63 16

8. 5FH MON. (5FH MONITOR) 0 / 1 0

9. SAP VCO 0～63 14

10. FIL. OFF.

14

No. 51833

10 0

±

A

GAME MODE

"

V-N29220

Setting (Adjustment) item Variable range Initial setting value

TINT
COLOR
PICTURE
BRIGHT
DETAIL

LOW LIGHT MODE

"

Setting (Adjustment) item Variable range initial setting value

R CUTOFF
G CUTOFF
B CUTOFF

HIGH LIGHT MODE

"

Setting (Adjustment) item Variable range initial setting value

G DRIVE
B DRIVE

20

±

20

±

20

±

20 -5

±

15

±

0 ～ 255
0 ～ 255
0 ～ 255

0 ～ 255
0 ～ 255

±

±

-10

+5

20
20
20

128
128

0
0

RF AFC CHECK MODE

"

Setting (Adjustment) item Variable range initial setting value

RF AFC
FINE

ON / OFF

-77 ～ +77

ON

±××

DO NOT
ADJUST

No. 51833

15

A

V-N29220

■■■■

ADJUSTMENTS

B1 POWER SUPPLY

Item

Check of
B1 POWER
SUPPLY

Measuring

instrument

DC Voltmeter TP-91 (B1)

Test point Adjustment part Descrip tion

TP-E(

)

""""

ADJUSTMENT OF VIDEO / DEF. CIRCUIT

Item

IF VCO
adjustment

Measuring
instrument

Signal
generator

TOO HIGH
ABOVE REFERENCE
BELOW REFERE NCE
TOO LOW

SYNC : YES

Test point Adjustment part Descrip tion

CW TRANSF. (T131)

[VCO(CW)] MODE

YELLOW

1. Receive a black-and- w hit e si gn al.

2. Connect the DC Voltmeter to TP-91 (B1) and TP-E(

3. Confirm that the voltage is DC134V .

Under norm al c ond it i ons , no adj us tment is requ ired.

"

1. Receive a NTSC broadcast. (use channels without offset
frequency).

2. Select the VCO(CW) mode from the SERVICE MENU.

3. Confirm the color change (yellow) from “TOO HIGH” to “TOO
LOW”by CW TRANSF. and “SYNC : YES” being shown on the
screen. Then, adjust CW TRANSF. until “BELOW
REFERENCE” mark turns yellow and confirm again “ SYNC :
YES” being shown on th e sc reen.

+2V

-2.5V

).

""""

RF. AGC
adjustment

FOCUS
adjustment

Signal
generator

EXIT BY

IT

EXIT

No.19 RF AGC

FOCUS VR
[In HVT]

1. Receive a broadcas t .

2. Select “No.19 RF AGC” of the PICTURE MODE.

3. Press the M UTING ke y and turn off color.

4. With the MENU LEFT key, get noise in the screen picture. (0 side
of setting value)

5. Press t he MENU R IGHT key and stop when nois e 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.

1. Receive a crosshatch signal.

2. While looking at the screen, adjust FOCUS VR so that the
vertic al and hor i z ontal lines w ill be cl ear and in fin e det ail.

3. Make sure that the picture is in focus even when the screen gets
darkened.

16

No. 51833

A

V-N29220

Item

V.SIZE
Adjustment

Screen

size

92%

Measuring

instruments

Signal
generator

Test point Adjustment part Description

No.13 V.SIZE

Screen size

Picture
size
100%

1. Receive a crosshatch signal.

2. Select No.13 V.SIZE in the PICTURE MODE.

3. Set the initial setting value of No.13 V.SIZE with the LEFT /
RIGHT key of the MENU.

4. Adjust No.13 V.SIZE until the vertical screen size is 92%.

H.POSITION
Adjustment

Signal
generator

Picture size 100%

No.15 H. P O S

1. Receive a crosshatch signal.

2. Select the No.15 H.POS of the PICTURE MODE.

3. Set the initial s etting value of the No.15 H.POS with the LEFT /
RIGHT key of the MENU.

4. Adjust the No.15 H.POS until the screen will be horizontally
centered.

No. 51833

17

A

V-N29220

Item

WHITE
BALANCE
(Low Light)
Adjustment

Measuring

instruments

Signal
generator

R CUTOFF

BRIGHT

Test point Adjustment part Description

[LOW LIGHT] MOD E

***

G CUTOFF

***

***

******
***

***

******

***

***

******

B CUTOFF

EXIT BY

BRIGHT

BRIGHT

***

******

REMOTE CONTROL UNIT

BRIGHT

R. CUTOFF
G. CU TOFF
B. CUTOFF

SCREEN VR
[In HVT]

IT

EXIT

1. Receive a bl ac k-and- w hit e si gnal.(Color off )

2. Select the LOW LIGHT MODE from the SERVICE MENU.

3. Set the initial setting valu e of BRIG HT with the L EFT / RIGHT
key of the remote control unit.

4. Set the initial setting value of R CUTOFF, G CUTOFF and B
CUTOFF with the ④ to ⑨ key of the remote control unit.

5. Display a s ingle h orizont al line by p ressin g the ①key of the
remote control unit.

6. Turn the screen VR all the way to the left.

7. Turn t he screen VR graduall y to the rig ht from th e left unti l
either one of the red, blue or green colors appears faintly.

8. Adjust the two colors which did not appear until the single
horizontal line that is displayed becomes white using the
to ⑨ keys of t h e rem ote contr ol unit.

9. Turn the scr een VR t o where th e singl e horizon tal 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.

④

WHITE
BALANCE
(High Light)
Adjustment

H.LINE ON EXITH.LINE OFF

1 2 3

R CUTOFF B CUTOFFG CUTOFF

R CUTOFF B CUTOFFG CUTOFF

Signal
generator

[HIGH LIGHT] MODE

G DRIVE

HIGH LIGHT

***

*** ***

******

54

6

987

G. DRIVE
B. DRI V E

1. Rec eive a m on oscope p attern sign al.

2. Select the【HIGH LIGHT】MODE in the SERVICE MENU.

3. S et the initi al setting val u e of G DR IVE and B DRIVE with th e

⑤, ⑥, ⑧

4. Adj us t the sc reen u nti l it b ec om es whit e us i ng the ⑤, ⑥,

and ⑨ keys of the remote control unit.

⑧

and ⑨ keys of the remo te control unit.

The ③ (EXIT) key is the cancel key for the WHITE

＊

BALANCE.

Remote Control Unit

B DRIVE

***

******

EXIT BY

EXIT

IT

key : H.LINE ON

①

key : H.LINE OFF

②

key : EXIT

③

key : G DRIVE

⑤

key : B DRIVE

⑥

key : G DRIVE

⑧

key : B DRIVE

⑨

▲
▲
▼
▼

18

No. 51833

A

V-N29220

Item

SUB
BRIGHT
Adjustment

SUB
CONTRAST
Adjustment

SUB COLOR
adjustment

Measuring

instruments

Signal
generator

Oscilloscope
Remote
control unit

Test point Adjustment part Description

1. Rec eive a broadcas t .

2. Select No.1 BRIGHT of the PICTURE MODE.

3. Set the i nit i al setti ng val u e of the No.1 BRIGHT with th e LEFT /
RIGHT key of the MENU.

4. If the bri ghtness is n ot best with th e initi al s etting val ue, m ake
fine adjus tment of the No.1 BRIGHT until you g et the opti mum
brightness.

1. R ec eive a broadc as 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 contrast is not best with the initial setting value, make fine

adjustment of the No.2 PICTURE until you get the optimum
contrast.

[ Method of adjustment without measuring instrument ]

1. Receive a broadcas t .

2. Select “No.6 COLOR” of the PICTURE MODE.

3. Set the initial setting value of the “No.6 COLOR” with the

LEFT/RIGHT key of the MENU.

4. If the color is not the best with the Initial setting value, make fine

adjustment of the “No.6 COLOR” until you get the optimum
color.

TP-R
TP-E(

####

[CRT
SOCKET
PWB]

No.1 BRIGHT

No.2 PICTURE

No.6 C O LOR

)

WWWW

[ Method of adjustment using measuring instrument ]

1. Input the full field color bar signal (75% white).

2. Select “No.6 COLOR” to the PICTURE MODE.

3. Set the initial setting value of the “No.6. COLOR” with the

Cy

G

B

(-)

LEFT/RIGHT key of the MENU.

4. Connect the oscilloscop e between TP -R an d TP -E.

5. Adjust COLOR and bring the value of
voltage

+16V

(V

W-R

).

in the il l u st ra tio n to the

(A)

0V

RRRR

(A)

(+)

No. 51833

19

Y

Mg

A

V-N29220

Item

SUB TINT
adjustment

instruments

Signal
generator

Oscilloscope
Remote
control unit

(-)
0V
(+)

(B)

Measuring

WWWW

YYYY

Test point Adjustment part Description

[ Method of adjustment without measuring instrument ]

1. Receive a broadcas t .

2. Select “No.5 TINT” of the PICTURE MODE.

3. Set the initial setting value of the “No.5 TINT” with the
LEFT/RIGHT key of the MENU.

4. If the tint is not t he best with th e initi al s etting value, make f ine
adjust m ent of t h e “N o.5 TI NT” until you g et t h e opti m um tint .

[ Method of adjustment using measuring instrument ]

1. Input the full field color bar signal (75% white).

2. Select “No.5 TINT” to the PICTURE MODE.

3. Set the initial setting value of the “No.5 TINT” with the
LEFT/RIGHT key to the MENU.

4. Connect the oscilloscop e between TP -R an d TP -E.
Adjust TINT and bring the value of

5.

voltage

+9V

(V

W-Y

).

Cy

TP-R
TP-E(

####

[CRT
SOCKET
PWB]

G

No.5 TINT

)

B

Mg

R

in the illustr ation to the

(B)

ADJUSTMENT OF MTS CIRCUIT

Item

MTS INPUT
LEVEL

check
MTS

STEREO
VCO

adjustment

20

Measuring

instrument

Signal
generator

Frequency
counter

Test point Adjustment part Descrip tion

R OUT
[AUDIO OUT]

No.1 IN LEVEL

No.2 FH MO N.

No.3 ST VCO

1. Select the “No.1 IN LEVEL” of the SOUND MODE.

2. Verify that the “N o.1 IN LEV EL” is s et at its ini t i al s etti ng valu e.

1. Receive a RF signal (nonmodulated sound signal) from the
antenna terminal.

2. Select the “No.2 FH MON.” of SOUND MODE, and change the
setting v al ue from 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. Adjus t th e “N o.3 ST V CO” s o that t h e Fr equ enc y Cou nter will
displ ay 15. 73kHz±0.1kHz.

7. S elect the “N o.2 FH MON. ” of the SOUN D MOD E, and res et
the setting value from 1 to 0.

No. 51833

A

V-N29220

Item

MTS SAP
VCO
adjustment

MTS FILTER
check

Measuring

instrument

Signal
generator

Frequency
counter

Test point Adjustment part Descrip tion

MPX

【【【【

】】】】

Connector

pin SDA

【【【【4】】】】

pin GND

【【【【3】】】】

R OUT
[AUDIO OUT]

No.8 5FH MON.

No.9 SAP VC O

No.5 FILTER

1. Receive a RF signal (non modulated sound signal) from the

antenna terminal.

2. Connect between pin【4】of【MPX】conn ect or and GND (P in

【3】of【

3. Select the “No.8 5FH MON.” of the SOUND MODE, and reset

the setting value from 0 to 1.

4. Connect the Frequency 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 t he “N o.9 SAP VCO” so th at the F requ ency C ounter will

displ ay 78. 67kHz±0.5kHz.

8. Select the “No.8 5FH MON.” of the SOUND MODE, and reset

the setting value from 1 to 0.

1. Select th e “ No.5 FIL TE R” of the S OUND MODE .

2. Verify that the “No.5 FILTER” is set at its initial setting value.

MPX】connector) through 1MΩ Resistor.

MTS
SEPARATION
adjustment

L-Channel
signal wave form

1 cy cl e

TV audio
multiplex
signal
generator

Oscilloscope

L OUT
R OUT
[AUDIO OUT]

R-Channel
crosstalk port i on

Minimum

No.6 LOW SEP.

No.7 HI SEP.

1. Input a stereo L signal (300Hz) from the TV audio multiplex

signal g en er at or to the anten n a ter m in al.

2. Connect an osc ill osc ope t o L OUT R CA pin of th e AUD IO OUT ,

and display one cycle portion of the 300Hz signal.

3. Change the connecti on of t he oscill oscope to R OUT RCA pi n of

the AUDIO OUT, and en l ar g e the voltag e axis .

4. Select the “No.6 LOW SEP.” of the SOUND MODE.

5. Set the initial 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 minim um .

7. Change the signal to 3kHz, and similarly adjust the “No.7 HI

SEP.”.

No. 51833

21

A

V-N29220

HOW TO CHECK THE HIGH VOLTAGE HOLD DOWN CIRCUIT

1. HIGH VOLTAGE HOLD DOWN CIRCUIT

After rep air i ng the hi gh voltag e h old d ow n circuit sh ow n in Fi g. 1.
This circuit shall be checked to operate correctly.

2. CHECKING OF THE HIGH VOLTAGE HOLD DOWN CIRCUIT

(1) Turn the POWER SW ON.
(2) As shown in Fig. 1, set the resistor (between X

(3) Make sure that the screen picture disappears.
(4) Temp orarily un pl ug t h e p ow er c or d.
(5) Remove the resistor (between X

(6) Again plug the power cord, make sure that the normal picture is displayed on the screen.

R953

D958

POWER

ON OFF

connector 1 & 3 ).

RY901

Q951

Q562

connector 1 & 3 ).

RESISTOR

18.84k

1%1/4W

Ω±

Ω±

Ω±Ω±

3 2 1

CONNECTOR

X

HEATER

T522

D563

Q561

R564

C562

D562

R563

Fig. 1

R562

C561

D561

R561

4

D565

BW

22

No. 51833

A

V-N29220

g

SELF CHECK FUNCTIONS

1. Outline

This mod el h as self ch eck func ti ons given b el ow . When a malf unc t i on h as been det ec t ed, t h e POWE R is turn ed off and the L ED fl 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 D etai ls of detect ion Method of detection 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.

3. Self check indicating function

The self-c heck funct ion begins detect ion 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.

W hen th e ve rt ic al ci rc uit 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 t han 1
ms, a malfu nc tion is int erpreted.

POWER
Supplied

After about
5 seconds

Start of
detection

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 oll er is not op er ation al
until the power code is taken out
and put in ag ain.

Malfunction
is detected

POWER OFF
Flashin

ON-TIMER LED

No. 51833

23

A

V-N29220

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. D o not r euse a chip par t after removi ng it.

SOLDERING IRON

!

1. Us e a high ins ulation s old ering iron wit h a thi n p ointed end of it.

2. A 30w soldering iron is recommended for easily removing parts.

REPLACEMEN T STEPS

!

How to remove Chip parts

1.
Resistors, capa citors, etc.

$

(1) As shown in the figure, push the part with tweezers and

alternately m elt th e s older at each en d.

2. How to install Chip par ts

Resistors, capa citors, etc.

$

(1) Apply solder to the pattern as indicated in the figure.

(2) S hif t wi th tweezers an d r em o ve the chip par t.

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

alternately m elt th e s old er at eac h lead. S hift and rem ov e the
chip part.

SOLDER

(2) G rasp the chip part wit h t w e ez er s and p l ac e it on the s ol d er.

Then heat an d m elt t h e s old er at b oth en ds of th e 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

(4) Then solder leads

as indicated in the figure.

A

A

B

C

and C.

B

A

B

C

Note : After rem oving the p art, remove r em a in ing solder from th e

pattern.

24

No. 51833

V

ICTOR COMPANY OF JAPAN, LIMITED

HOME AV NETWORK BUSINESS UNIT 12, 3-chome, Moriya-cho, Kanagawa-ku, Yokohama, Kanagawa-prefecture, 221-8528, Japan

4

N29220R-MEM #999

N29220S-MEM #3

Printed in Japan
VP 0109
DP3051