JVC AV-N29220R, AV-N29220S Service Manual

No.51833

Sep. 2001

A

V-N29220

1

COPYRIGHT © 2001 VICTOR COMPANY OF JAPAN, LTD.

Sept. 2001

AV-N29220

/R

AV-N29220

/S

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

････････････････････････････････

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

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

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

････････････････････････････････ ････

25

★

OPERATING INSTRUCTIONS

★

STANDARD CIRCUIT DIAGRAM

････････････････････････････････

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

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

････････････････････････････････

････････････････

2-1

SER VICE MANUAL

COLOR TELEVISION

BASIC CHASSIS

FV4

No.51833

A

V-N29220

2

SPECIFICATIONS

Contents

Items

AV-N29220

/R

AV-N29220

/S

Dimensions (W

××××H××××

D)

654mm×593mm×495mm

Mass

31.1 kg

TV RF System

CCIR(M)

Color Sound System

NTSC, BTSC System (Multi Channel Sound)

TV Receiving Channels and Frequency

VL Band
VH Band
UHF Band

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

CATV Receiving Channels and Frequenc y

Low Band
High Band
Mid Band
Super Band
Hyper Ba nd
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)
180 Channels

Intermediate Frequency

Video IF Carrier
Sound IF Carrier

Color Sub Carrier

45.75MHz

41.25MHz (4.5MHz)

3.58MHz

Power Input
Power Cons umption

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×2

Input

Video Input

1Vp-p, 75Ω (RCA pin jack)

Audio Input (R/L)

500mVrms ( -4dBs ), High Impedance (RCA pin jack)

S-Video

Y: 1Vp-p Pos itive (n eg ati ve s ync provided, wh en termin at ed wi th 7 5Ω)
C: 0.286V

p-p

(burst signal, when terminated with 75Ω)

Variable Audio Outp ut (R /L)

More than 0～1550mVrms (+6dBs)
Low imped ance (400H z w h en m od ul ated 100%)
(RCA pin jack)

Antenna terminal

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

Remote Control Unit

RM-C306
(AA/R6/UM-3 batt er y×2)

Design & specificat ions ar e s ubjec t to change without notice.

(54MHz～804MHz)

No.51833

A

V-N29220

3

SAFETY PRECAUTIONS

1. The design of this product contains special hardware, many
circuits and components specially for safety purposes. For
continued protection, no changes should be made to the original
design unless authorized in writing by the manufacturer.
Replacement parts must be identical to those used in the original
circuits. 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 ur er 's w arranty and wil l fur t h er reli ev e t h e manufacturer
of responsi bility f or personal inj ury or pr operty dam age resul ting
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
afforded by them n ecessar ily be obt ained by us ing rep lacem ent
componen ts rated f or higher voltag e, watt ag e, etc. R epl acem ent
parts that have these s p eci al safety charac teristic s are ident if i ed
in the parts list of Service manual.

Electrical components
having such features are identified by shading on the
schemati cs a nd by (

!!!!

) on the parts list in Serv ice manu al.

The use of a s ubstitute repl acement which does not hav e the
same saf ety char acteristics as the rec ommended repl acemen t
part show n in the p arts list of S ervic e m anual m ay caus e s hoc k,
fire, or other hazards.

4.

Don't short b etween the LIVE side groun d and ISOL ATED
(NEUTRAL) side ground or EARTH side ground when
repairing.

Some model's power circuit is partly different in the GND. The
difference of the GN D is sh ow n b y 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 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 b e kept, a fus e or any par ts will be brok 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 to th e picture tu be must conf orm 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 be k ept to a mi nimum, or should be
prevented. If severe arcing occurs, remove the AC power
immediately and determine the cause by visual inspection
(incorrec t installati on, crack ed or melted high v oltage harness ,
poor solderi ng, etc.). To main tain the proper min imum level of
soft X-Ray emission, components in the high voltage circuitry
includin g the picture tu be 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 le ad to th e gr oun d fr am e and c on necti ng t h e oth er end of
the lead through a 10k! 2W resistor to the anod e butt on.

8. W hen servic e is required, obser ve the origin al lead dress . Extr a
precaut ion shou ld be gi ven to assure c orrect l ead dress in th e
high voltage circuit area. W here a short circuit has occurred,
those comp onents that in dicate evi denc e 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
termin als , video/audio input an d out put termin als , C on trol knobs,
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)

Dielectr i c St rength Test

The isol ation b etween th e AC pr imar y circuit and all metal parts
expos ed t o the user , p ar tic u larly any exp osed metal part h avi ng a
return p ath to the chassis should withst and a voltage of 3 000V
AC (r.m.s .) for a period of one secon d.

(. . . . W ithstand a voltage 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 more, f or a peri od of one secon d.)
This method of test requir es test equip ment not gen erally f ound
in the service trade.

(2)

Leakage Current Check

Plug the AC lin e c or d dir ec tly into the AC outlet (d o 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.) . 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 tly into the AC outlet (d o not use a line
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 known
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 measur e th e
AC voltag e across the resis tor. N ow, re verse th e 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 tr opical ar ea, this m us t n ot exceed 0. 3 V A C (r.m.s .) .
This corresponds to 0.2mA AC (r.m.s.).

0.15μF AC-TYPE

1500

!

10W

GOOD EARTH GROUND

PLACE THIS PROBE
ON EACH EXPOSED
METAL PART

AC VOLTMETER
(HAVING 1000

!

/V,

OR MORE SENSITIVITY)

No.51833

A

V-N29220

4

FEATURES

"

N ew ch ass is des i gn en ables us e of a s ing le boar d wi th 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 RD f u n c ti on pr even ts t h e s pec i f ic

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

"

I

2

C 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-Typ e) ANT Terminal.

"

SLEEP TIMER for setting in real time.

"

Closed-caption broadcasts can be viewed.

"

Audio Video input te rminal.

"

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.

MAIN DIFFERENCE LIST

!!!!

Model name

Parts Name

AV-N29220

/R

AV-N29220

/S

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

!

PICTURE TUBE (ITC) A68ADT25X881 A68QDN891X001

HOW TO IDENTIFY MODELS

The difference between

AV-N29220/R

and

AV- N29220/S

is in the

PICTURE TUBE

.

As the result of the difference in

PICTURE TUBE

, the

MAIN PWB

also differ.

!

MODEL

Parts name

AV-N29220

/R

AV-N29220

/S

!

RATING LABEL GQ20001-001A-A

←←←←

INDICATED AV-N29220 INDICATED AV-N29220

INDICATED

““““R””””

INDICATED

““““S””””

No. 51833

A

V-N29220

5

FUNCTIONS

■■■■

REMOTE CONTROL UNIT

■

REAR TERMINAL

①

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

②

AUDIO OUTPUT terminal (Variable)

③

ANTENNA terminal

1

2

3

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

■

FRONT CONTROL KEYS

1

2 3 4 5 6 7 8 9

①

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

②

MENU button

③

CHANNEL - (Operate ) button

④

CHANNEL + (Operate ) button

⑤

VOLUME - button

⑥

VOLUME + button

⑦

REMOCON window

⑧

INDICATOR lamp (TIMER / POWER)

⑨

POWER button

3

4
5
6

11

10

13
14

7

8

1

2

9

12

15

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

No.51833

A

V-N29220

6

SPECIFIC SERVICE INSTRUCTIONS

DISASSEMBLY PROCEDURE

REMOVING THE REAR COVER

1. Unplug the power supply cord.

2. Remo ve the 7 scr ews marked

!!!!

and 2 scr ews marked

""""

as

shown in Fig.1.

3. Withdraw the REAR COVER toward you.

[CAUTION]

"

W hen reinstall ing the r ear cover, carefull y push it i nward after

inserting the MAIN PWB into the rear cover groove.

REMOVING THE MAIN PW BOARD

"

After removin g 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

####

from the cabinet bot tom.

2. Pull out the MAIN PWB as it is.
(If necessary, t ak e off the wire clam p and connec tors, etc.)

REMOVING THE SPEAKER

"

After removing the MAIN PW board.

1. Remove the 2 screws marked

$$$$

as shown in Fig. 1.

2. Withdraw the speaker backward.

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

CHECKING THE MAIN PW BOARD

1. To check the back sid e of th e MAI N PW Board.

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

2) Erect t he chassis ver tically 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

contactin g wi t h othe r PW Boar d .

"

Before tur ni ng on power, m ak e sure th at 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 b e inadvert ent l y removed, be s ure to t i e the w ires w ith
a new cable tie.

No.51833

A

V-N29220

7

FRONT CABINET

CRT SOCKET PWB

(Within MA IN PWB )

SPEAKER

REAR COVER

Fig.1

A

CONTROL KNOB

MAIN PWB

B

D

PB STOPPER

C

SPEAKER

D

No.51833

A

V-N29220

8

MEMORY IC REPLAC EMENT

1. Memory I C

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 I C replacement procedure

Procedure Screen display

(1) Power off

Switch off th e pow er and disc onn ec t th e pow er c or d fr om t h e out let.

(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 indic ati on of “

SLEEP TIMER 0

MIN.

” is being displayed, press

DISPLAY

key and

VIDEO STATUS

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

MENU UP/DOWN

key and adj ust the setting with the

MENU LEFT/RIGHT

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

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 OPERATING 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

GAME
LOW LIGHT HIGH LIGHT
RF AFC CHK
VCO

(CW)

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.

No.51833

A

V-N29220

9

TABLE 1 (System Constant setting)

Setting value

Setting item Setting content

AV-N29220/R AV-N29220/S

MODEL Display th e eac h applic at i on m od el Comfor t abl e m odel name

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
INPUT (TV/VIDEO)

OFF
CH 02
See OPERATING INSTRUCTIONS.
10

TV
DISPLAY
SLEEP TIMER
VIDEO STATUS
HYPER SURROUND

OFF

0

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
BACKGROUND

Unnecessary to set

NO

SPANISH

OFF

BLACK
AUTO TUNER SETUP
CHANNEL SUMMARY
V-CHIP
SET LOCK CODE

TUNER MODE : AIR

Unnecessary to set

OFF

Unnecessary to set

YES NO

YES

NO

No.51833

A

V-N29220

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 initial 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. Presetting b ef or e ad jus 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

CENTER

HYPER SURROUND

OFF

TINT, COLOR,
PICTURE, BRIGHT,
DETAIL

CENTER

ADJUSTMENT EQUIPMENT

1. DC voltmeter (or digital vol t meter)

2. Oscilloscope

3. Signal generator (Pa ttern ge nerator)［NTSC

］

4. Remote control unit

5. TV audio multiplex signal generator.

6. Frequency counter

ADJUSTMENT ITEMS

Adjustment items Adjustment items Adjustment items

B1 POWER
SUPPLY

WHITE BALANCE
(Low Light )

MTS INPUT
LEVEL check

IF VCO

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

MAIN PWB

CRT SOCKET PWB

(

Within MAIN PWB ASS'Y

)

U

T

TP-E

POWER

(

SOLDER SIDE

)

TOP

FRONT

IC421

Q522

HV

UPPER : FOCUS
LOWER : SCREEN

U

T

TUNER

IC201

IC702IC701

F901

IC921

T522

MPX

51

T131 CW

TP-12B

31

CW

R926

F902

TP-91
(B1)

PW

DEG.

CRT EARTH

(BRAIDED ASS'Y)

E1

TP-R

S

STEREO

AV IN OUT

S-IN

TP-E
( )

R927

VOL+ VOL- CH+ CH- MENU

MEMORY

ADJUSTMENT LOCATIONS

No. 51833

A

V-N29220

11

BASIC OPERATION OF SERVICE MENU

1. TOOL OF SERVICE MENU OPERATION

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.

"

GAME

･･･････････････････････

This is used when the GAME 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]

"

VCO (CW)

･･･････････････････

This is used when the IF VCO is adjusted.

3. Basic Opera tions of the SER VI C E M EN U
(1) How to enter the SERVICE MENU.

Press

SLEEP TIMER

key and, while the ind ication of “

SLEEP TIM ER 0 MIN.

” is being displayed, pr ess

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 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 y ell ow .)

●

PICTURE

●

SOUND

●

GAME

●

LOW LIGHT

●

HIGH LIGHT

●

RF AFC CHK

●

VCO(CW)

(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

②

will be displayed as shown in figure page later.

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 LIGHT, HIGH LIGHT, RF AFC CHK and VCO (CW) mode

1) If selec t an y of GA ME / LOW LI GHT / HIG H L IGHT / RF AFC C H K / V CO (CW) items, and t h e LEFT / RIG HT ke y is press ed f rom
SERVICE MENU ( MAIN MENU ), the screens ⑤ ⑥ ⑦ ⑧ ⑨ will be displayed as shown in figure page later.

2) Then the settings or ver ifications can be perf orm ed.

No. 51833

A

V-N29220

12

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

***

******

***

EXIT BY

IT

TOO HIGH
ABOVE REFERENCE
BELOW REFERENCE
TOO LOW

SYNC : YES

EXIT

SELECT BY
OPERATE BY

EXIT BY

IT

RF AFC
FINE
STATUS

EXIT

①①①①

SERVICE MENU (MAIN MENU)

②②②②

SCREEN

⑦⑦⑦⑦

HIGH LIGHT MODE

***

******

***

⑨⑨⑨⑨

VCO (CW) MODE

⑤⑤⑤⑤

GAME MODE

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

SELECT BY EXIT BY
OPERATE BY

IT

EXIT

No. 51833

A

V-N29220

13

(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, press th e EXIT k ey ag ain.

★

The s ettings f or LOW LIGHT and H IGH LI GHT 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.

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

INITIAL
SETTING VALUE

↓ (Adjus t)

SETTING VALUE

SETTING
ITEM

SELECT BY
OPERATE BY

EXIT BY

IT

TINT
COLOR
PICTURE
BRIGHT
DETAIL

EXIT

***

******

***

***

******

***

***

******

***

***

******

***

***

******

***

The letter of the selected
Items are dis p layed in yell ow .

GAME MODE

No. 51833

A

V-N29220

14

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 settin g items i n the video m od e No.7 EXT BRI ., No. 8 EXT PIC ., N o.11 E XT T IN T and N o.12 EXT COL . are link ed to th e it ems in

the TV MODE No.1 BRIG HT, No.2 PICTURE , No.5 TINT and No.6 COLO R, respectivel y. When th e setting items in the TV mode are
adjust ed, the values in the settin g it ems i n the vid eo m od e are revis ed automat ically t o t h e same v alu es in the T V m od e. (The initial setting
values given in ( ) are off-set values.)

#

When the f our items ( N o. 7, 8, 11 and 12) are adj us ted in the vid eo mode, the s etting valu es in eac h item ar e revised ind ep endently.

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

1. BRIGHT

0 ～ 127

64

2. PICTURE

0 ～ 127

77

3. TV DTL(TV DETAIL)

0 ～ 63

26

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

5. TINT

0 ～ 127

66

6. COLOR

0 ～ 127

50

7. EXT BRI.(EXT.BRIGHT)

±

25

(-2)

8. EXT PIC.(EXT.PICTURE)

±

25 (±0)

9. EXT DTL(EXT.DETAIL)

0 ～ 63

26

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

11. EXT TINT

±

25 (±0)

12. EXT COL.(EXT.COLOR)

±

25

(+1)

13. V SIZE

0 ～ 63

38

14. V CENT.(V.CENTER)

0 ～ 7

0

15. H POS.(H.POSITION)

0 ～ 31

18

16. OSD HP (OSD H POSITION)

0 ～ 31

23

17. OSD VP (OSD V POSITION)

0 ～ 15

14

18. H. AFC 0 / 1 0

19. RF AGC

0 ～ 63

40

"

SOUND MODE

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.

±

10 0

No. 51833

A

V-N29220

15

"

GAME MODE

Setting (Adjustment) item Variable range Initial setting value

TINT

±

20

±

0

COLOR

±

20

±

0

PICTURE

±

20

-10

BRIGHT

±

20 -5

DETAIL

±

15

+5

"

LOW LIGHT MODE

Setting (Adjustment) item Variable range initial setting value

R CUTOFF
G CUTOFF
B CUTOFF

0 ～ 255
0 ～ 255
0 ～ 255

20
20
20

"

HIGH LIGHT MODE

Setting (Adjustment) item Variable range initial setting value

G DRIVE
B DRIVE

0 ～ 255
0 ～ 255

128
128

"

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

A

V-N29220

16

■■■■

ADJUSTMENTS

B1 POWER SUPPLY

Item

Measuring

instrument

Test point Adjustment part Desc ription

Check of
B1 POWER
SUPPLY

DC Voltmeter TP-91 (B1)

TP-E(

""""

)

1. Receive 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 / DEF. CIRCUIT

Item

Measuring
instrument

Test point Adjustment part Desc ription

IF VCO
adjustment

Signal
generator

CW TRANSF. (T131)

[VCO(CW)] MODE

"

Und er normal conditions, no adjust m ent 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 s hown on the sc r een.

RF. AGC
adjustment

No.19 RF AGC

1. Receive a br oadcast.

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

3. Pres s the MUTING key and turn off color.

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

5. Press th e MENU R IGHT key and stop when nois e disapp ears
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. Rece ive 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 f in e det ail.

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

+2V

-2.5V

EXIT BY

IT

TOO HIGH
ABOVE REFERENCE
BELOW REFERE NCE
TOO LOW

SYNC : YES

EXIT

YELLOW

No. 51833

A

V-N29220

17

Item

Measuring

instruments

Test point Adjustme nt part Description

V.SIZE
Adjustment

Signal
generator

No.13 V.SIZE

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

No.15 H.P OS

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.

Screen size

Picture size 100%

Screen

size

92%

Picture
size
100%

No. 51833

A

V-N29220

18

Item

Measuring

instruments

Test point Adj ustment part Description

WHITE
BALANCE
(Low Light)
Adjustment

Signal
generator

BRIGHT

R. CU TOFF
G. CUTOFF
B. CU TOFF

SCREEN VR
[In HVT]

1. Receive a bl ac k-and- white signal. ( Color off )

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

3. Set the initial s etti ng val u e of BRIGH T with th e L EFT / RIGH T
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 ressing t he ①key of the
remote control unit.

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

7. Turn th e 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 unti l the single
horizontal line that is displayed becomes white using the

④

to ⑨ keys of the remot e c ontrol 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.

WHITE
BALANCE
(High Light)
Adjustment

Signal
generator

G. DRIVE
B. DRI V E

1. Rec eive a m on oscope p att er n si gn al.

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

3. S et the initial setti ng val u e of G D R IVE and B DR I VE with t he

⑤, ⑥, ⑧

and ⑨ keys of the remote control unit.

4. Adj us t t he screen until it becom es whit e us i ng t h e ⑤, ⑥,

⑧

and ⑨ keys of the remote control unit.

＊

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

[HIGH LIGHT] MODE

EXIT BY

IT

HIGH LIGHT

EXIT

***

******

*** ***

******

***

G DRIVE

B DRIVE

Remote Control Unit

①

key : H.LINE ON

②

key : H.LINE OFF

③

key : EXIT

⑤

key : G DRIVE

▲

⑥

key : B DRIVE

▲

⑧

key : G DRIVE

▼

⑨

key : B DRIVE

▼

[LOW LIGHT] MODE

EXIT BY

IT

EXIT

***

******

***

***

******

***

BRIGHT

***

******

***

BRIGHT

***

******

***

1 2 3

6

987

54

REMOTE CONTROL UNIT

H.LINE ON E X ITH.LINE OFF

R CUTOFF B CUTOFFG CUTOFF

R CUTOFF B CUTOFFG CUTOFF

BRIGHT

G CUTOFF

B CUTOFF

R CUTOFF

No. 51833

A

V-N29220

19

Item

Measuring

instruments

Test point Adjustme nt part Description

SUB
BRIGHT
Adjustment

No.1 BRIGHT

1. Rec eive a br oadcast.

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

3. Set the i nit i al setti ng valu e of th e N o.1 BRIGH T with th e LEFT /
RIGHT key of the MENU.

4. If the brigh tness is not best with th e initi al set ting val ue, m ake
fine adjus tment of t he No.1 BRIGHT unt il you g et the opti mum
brightness.

SUB
CONTRAST
Adjustment

No.2 PICTURE

1. R ec 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 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 br oadcast.

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.

SUB COLOR
adjustment

Signal
generator

Oscilloscope
Remote
control unit

TP-R
TP-E(

####

)
[CRT
SOCKET
PWB]

No.6 COL OR

[ 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
LEFT/RIGHT key of the MENU.

4. Connect th e osc illosc op e between TP- R and TP-E.

5. Adjust COLOR and bring the value of

(A)

in the il l u st ra tio n to the

voltage

+16V

(V

W-R

).

Y

WWWW

Cy

G

Mg

RRRR

B

(A)

0V

(-)

(+)

No. 51833

A

V-N29220

20

Item

Measuring

instruments

Test point Adjustme nt part Description

[ Method of adjustment without measuring instrument ]

1. Receive a br oadcast.

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 valu e, mak e f ine
adjust m ent of the “No.5 TI NT” until you g et th e opt i m um tint.

SUB TINT
adjustment

Signal
generator

Oscilloscope
Remote
control unit

TP-R
TP-E(

####

)
[CRT
SOCKET
PWB]

No.5 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 th e osc illosc op e between TP- R and TP-E.

5.

Adjust TINT and bring the value of

(B)

in the illustr ation to the

voltage

+9V

(V

W-Y

).

ADJUSTMENT OF MTS CIRCUIT

Item

Measuring

instrument

Test point Adjustment part Description

MTS INPUT
LEVEL

check

No.1 IN LEVEL

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

2. Verif y th at th e “N o.1 IN LEVEL” is s et at its ini tial setti ng val u e.

MTS
STEREO
VCO

adjustment

Signal
generator

Frequency
counter

R OUT
[AUDIO OUT]

No.2 FH MON.

No.3 ST VCO

1. Receive a RF si gnal (nonmodulated s ound signal) fr om the
antenna terminal.

2. Select the “No.2 FH MON.” of SOUND MODE, and change 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. Adjus t th e “N o.3 ST V CO” s o t hat t he Fr equ enc y Cou nter will
displ ay 15. 73 kHz±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.

YYYY

WWWW

Cy

G

Mg

R

B

(B)

0V

(-)

(+)

No. 51833

A

V-N29220

21

Item

Measuring

instrument

Test point Adjustment part Description

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 signal (non modulated sound signal) from the
antenna terminal.

2. Connect between pin【4】of【MPX】connec tor 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 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 Fr equ ency Cou nter 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.

MTS FILTER
check

No.5 FILTER

1. Select t he “No.5 F I LT E R” of the SOUND 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 antenna termin al.

2. Connect an osc ill osc ope to L OU T R CA pin of th e AUD IO OUT ,
and display one cycle portion of the 300Hz signal.

3. Change th e connect ion of th e osc il l oscope t o R OU T RCA pi n of
the AUDIO OUT, and en l arg e th e vol t age axis.

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

5. Set the initial s etting value of the “No.6 LOW SEP.” with the
LEFT/RIGHT key of the menu.

6. Adjust the “No.6 LOW SEP.” so that the str oke element of the
300Hz sig n al wi ll b ec om e mi nimum.

7. Change the signal to 3kHz, and similarly adjust the “N o.7 HI
SEP.”.

L-Channel
signal wave form

R-Channe l
crosstalk port ion

Minimum

1 cycl e

No. 51833

A

V-N29220

22

HOW TO CHECK THE HIGH VOLTAGE HOLD DOWN CIRCUIT

1. HIGH VOLTAGE HOLD DOWN CIRCUIT

After rep airing the hi gh v olt ag e h old 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 CIRCUIT

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

connector 1 & 3 ).

(3) Make sure that the screen picture disappears.
(4) Temp or ar il y un plug the p ower c ord.
(5) Remove the resistor (between X

connector 1 & 3 ).

(6) Again plug the power cord, 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

Q951

D958

R953

RY901

POWER

ON OFF

C562

R564

D565

BW

No. 51833

A

V-N29220

23

SELF CHECK FUNCTIONS

1. Outline

This model has self ch eck func t i ons gi ven below . When a malf unc t i on h as been detected, the POWER is turned off and th e L ED flashes 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 Detai ls of det ect 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.

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

No. 51833

A

V-N29220

24

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 part af t er rem ovi ng it.

!

SOLDERING IRON

1. Us e a high ins ul at i on s old er in g ir on wi th 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 figure, push the part with tweezers and

alternat ely melt th e s old er at eac h en d.

(2) Shift with t weez er s an d rem ove the chip p ar t.

$

Transistors, diodes, variable resistors, etc.

(1) Apply extra solder to each lead.

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

alternat ely melt th e s old er at each lead. Shif t and remove the
chip part.

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

pattern.

2. How t o i n stal l Ch ip p arts

$

Resistor s, ca pa ci t or s, et c.

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

(2) G r asp the chip p art wit h t w e ez ers and plac e it on th e s ol der.

Then heat an d m elt the solder 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

A

as indicated in the figure.

(4) Then solder leads

B

and C.

SOLDER

SOLDER

A

B

C

A

B

C

N29220R-MEM #999

N29220S-MEM #3

4

Printed in Japan
VP 0109
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