JVC C-N14210 Service Manual

SER VICE MANUAL

COLOR TELEVISION

C-N14210

BASIC CHASSIS

C-N14210

/S

FV4

CONTENTS

SPECIFICATIONS

!

SAFETY PRECAUTIONS

!

FEATURES

!

FUNCTIONS

!

SPECIFIC SERVICE INSTRUCTIONS

!

SERVICE ADJUSTMENTS

!

PARTS LIST

!

★

OPERATING INSTRUCTIONS

★

STANDARD CIRCUIT DIAGRAM

1

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COPYRIGHT © 2001 VICTOR COMPANY OF JAPAN, LTD.

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25

2-1

No.51831

Aug. 2001

Aug. 2001

C-N14210

SPECIFICATIONS

Items Content

Dimensions (W
Mass
TV System and Color system

TV RF System
Sound System

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 Ban 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)

14-3/8”×13-1/8”×14-3/4” / 36.4cm×33.4cm×37.4cm

19.8 Ibs / 9.0 kg

CCIR(M)
NTSC BTSC System

(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)

Antenna Input Im pedance
Power Input
Power Consumption

Picture Tube
High Voltage

Speaker
Audio Power Out put
Video Input
Audio Input
Earphone Jack

Remote Control Unit

75Ω(VHF/UHF) Terminal, F-Type Connector
120V AC, 60Hz
60W

14” (34cm) M eas ured Diag on al l y

22.5kV±1kV (at zer o b eam current)

3-1/16” (8cm) Round type
1W
1Vp-p, 7 5
500mVrms ( -4dBs ), High Impedance

3.5mm mono mini jack
RM-C205 (AA / R6 / UM-3 dry battery×2)

Ω

Design & specifications are subject to change without notice.

2

No. 51831

SAFETY PRECAUTIONS

C-N14210

1. The design of this product contains special hardware, many
circuits and components specially for safety purposes. For
continued protection, no changes should be made to the original
design unless authorized in writing by the manufacturer.
Replacement parts must be identical to those used in the original
circuits. Service should be performed by qualified personnel
only.

2. Alterations of the design or circuitry of the products should not be
made. Any design alterations or additions will void the
manuf act urer's warr an t y and wil l fur t h er reli ev e t h e manufacturer
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 p eci al safet y c h ar ac t er is tic s are identified
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 w hich does not have the
same saf ety characteris tics as the r ecommended replacement
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 s ide ground and ISOL AT ED
(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 be kept, a fuse or any parts will be broken.

5. If any repair has been made to the chassis, it is rec ommended
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 install ation, crack ed or melted high volt age harness,
poor solderi ng, etc.). To maintain the pr oper minimum level of
soft X-Ray emission, components in the high voltage circuitry
including the picture tube must be the exact replacements or
alternatives approved by the manufacturer of the complete
product.

7. Do not check high voltage by drawing an arc. Use a high voltage
meter or a high voltage probe with a VTVM. Discharge the
picture tube bef ore attempting meter c onnect ion, 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. Where 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 Electri cal 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 input and output t erm in als , Con t r ol 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)

Dielectric Stren gth Test

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 ha vi ng a
return p ath to the chassis should withst and a voltage of 3000V
AC (r.m.s .) for a period of one secon d.

(. . . . 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 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 t l y int o t he 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 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 ropical area, 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

GOOD EARTH GROUND

!

AC VOLTMETER
(HAVING 1000
OR MORE SENSITIVITY)

10W

!

/V,

PLACE THIS PROBE
ON EACH EXPOSED
METAL PART

No.51831

3

C-N14210

FEATURES

New chassis design enables use of a single board with simplified

"

circuitry.

Provided with mi ni at ure tuner (T V/ CA T V ).

"

Multifunctional remote control permits picture adjustment.

"

Adoption of the CHANNEL GUARD function prevents the

"

specif ic ch ann els f rom being selec t ed, un l ess t h e “ ID nu m b er” is
key in.

Adoption of t h e VIDEO S T ATUS function.

"

Adoption of the ON/OFF TIMER function.

"

With 75ΩV/U in common (F-Type) ANT Terminal.

"

SLE EP TIMER for setting in real time.

"

Closed-caption broadcasts can be viewed.

"

Audio Video input terminal.

"

Built-in V-CHIP system.

"

4

No. 51831

FUNCTIONS

REMOTE CONTROL UNIT

■■■■

1
2

3

4

11

10

12

C-N14210

①

VIDEO STATUS key

②

5
6

7

8
9

DISPLAY keys

③

MUTING key

④

MENU key

⑤

POWER key

⑥

INPUT SELECT key

⑦

CHANNEL key

⑧

V-CHIP key

⑨

FUNCTION key

⑩

EXIT key

⑪

SLEEP TIMER key

⑫

VCR CONTROL keys

FRONT PANEL

■■■■

REAR PANEL

■■■■

1 2 3 4 5 6 7 8 9

①

Headphone 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)
POWER

⑨

button

①
②
③

VIDEO(INPUT) terminal
AUDIO(INPUT) terminal
Antenna terminal

1 2

3

No. 51831

5

C-N14210

SPECIFIC SERVICE INSTRUCTIONS

DISASSEMBLY PROCEDURE

REMOVING THE REAR COVER

1. Unplug the power supply cord.

2. Remove the 5 screws marked

3. Withdraw the REAR COVER toward you.

[CAUTION]

When reinstalling the rear cover, carefully push it inward after

•

inserting the MAIN PWB into the rear cover groove.

REMOVING THE MAIN PW BOARD

1. Slight ly raise the both sid es of the MAIN P W Board b y han d and
withdraw the MAIN PW Board backward.
(If necessary, t ak e off the wire clam p an d c onnectors , etc .)

as shown in Fig.1.

!!!!

REMOVING THE SPEAKER

• After removing the MAIN PW board.

1. B y holding up th e SPEAKER HOLDER mark ed
unlocking the cl aw, the SPEAKER HOLDER c an be removed.
Then you can remove the SPEAKER.

slightl y and

""""

CHECKING THE MAIN PW BOARD

1. To check the backsid e of the MAIN PW Board.

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

2) Erect th e chassis ver tically so th at you can easily c heck the
backside of the MAIN PW Board.

[CAUTION]

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

•

co n tac ting w i th oth e r PW Bo ard.
Befor e tur ning on p ower, m ak e s ure th at t h e CRT earth wire 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 advert ent l y removed, b e sure to tie the w ires wit h
a new cable tie.

6

No. 51831

FRONT CABINET

C-N14210

CRT SOCKET PWB

(Wit hin MAIN PWB)

SPEAKER

SPEAKER HOLDER

MAIN PWB

CONTROL KNOB

REAR COVER

B

Fig.1

No. 51831

A

7

C-N14210

(CW)

MEMORY IC REPLACEMENT

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 procedure

Procedure Screen display

(1) Power off

Switch off the power and dis connect th e pow er c or d fr om t h e out let.

(2) Replace the memory IC

Initial val ue must be 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 check and setting

1) Press

SLEEP TIMER

is being displ ayed, press

key and, whil e the indicati on of “

DISPLAY

key and

VIDEO STAT US

SLEEP 0 M IN.

key 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 DISPLA Y and VIDEO STAT US keys to disp lay th e 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 th ese dif fer, s elect t he s etting item w ith t he MEN U UP/DO W N
key and adjust 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 setting
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.

”

SERVICE MENU
PICTURE

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

Indicate the model name

(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. 51831

TABLE 1 (System Constant setting)

Setting item Setting content Setting value

MODEL Display the each app lication m od el C onf or m abl e m od el n ame

C-N14210

V-CHIP YES

CAN V-CHIP 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

2. Settin g of ME NU
TINT
COLOR
PICTURE
BRIGHT
DETAIL
NOISE MUTING
SET VIDEO STATUS

SET CLOCK
ON/OFF TIMER
LANGUAGE
CLOSED CAPTION
BACK GROUND

AUTO TUNER SETUP
CHANNEL SUMMARY
V-CHIP
SET LOCK CODE

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

CENTER
CENTER
CENTER
CENTER
CENTER
ON
ALL CENTER

Unnece ssary to set
NO
SPANISH
OFF
BLACK

TUNER MODE : AIR
Unnece ssary to set
OFF
Unnece ssary to set

No. 51831

9

C-N14210

SERVICE ADJUSTMENTS

ADJUSTMENT PREPARATION

1. You can make the necessary adjust ments for this unit with
either the Remote Co ntrol Unit or With th e adjust ment to ols
and parts as given below.

2. Adjustment with the Remote Control Unit is made on the
basis of the initial setting values, however, the new setting
values wh ich set the scree n t o its optimum condition may
differ from the initial settings.

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

4. Turn on the power for set and test equipment before us e, and
start th e adj us tm en t pr oc edures aft er w ait in g at leas t 30 mi nutes.

5. Unless otherwis e specif ied, pr epare the m ost suit able rec eption
or input signal for adjustment.

6. N ever touc h any adj ustm ent par ts whic h are not s pecif ied in t he
list for this adjustment - variable resistors, transformers,
condensers, etc .

7. Pres et ti ng b efore adjustment.
Unless oth erwis e specif ied in th e adjust ment ins tructi ons, p reset
the following functions with the remote control unit:

VIDEO STATUS STANDARD
TINT/COLOR
PICTURE/BRIGHT
DETAIL

CENTER

ADJUSTMENT EQUIPMENT

1. DC volt meter (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 LOCATIONS

MAIN PWB

S756

POWER

PW

F901

REMOCON
RECEIVER

INDICATOR LAMP
(TIMER / POWER)

+

VOL

TP-12B

-

IC701

ADJUSTMENT ITEMS

Adjustment items Adjustment items

B1 POWER SUPPLY
IF VCO

RF. AGC SUB BRIGHT
FOCUS SUB CONTRAST
V. SIZE SUB COLOR
H. POSITION SUB TINT

FRONT

CRT SOCKET PWB

MENU

-

+

CH

IC702

MEMORY

S

(Withi n MAIN PWB ASS'Y)

TP-E

TP-R

T

WHITE BALANCE
(Low Ligh t)
WHITE BALANCE
(High Light )

(SOLDER SIDE )

TOP

E1

U

CR T EARTH
(BRAIDED ASS'Y)

10

TP-91

(B1)

TP-E

( )

DEG

R926

IC921

F902

T161

VIDEO

IN

CW

TUNER

AUDIO

T131

IN

CW

IC201

T

X

U

C

HV

T522

UPPER : FOCUS
LOWER : SCREEN

No. 51831

BASIC OPERATION SERVICE MENU

1.

TOOL OF SERVICE MENU OPER ATIO 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

"

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

(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 .)

････････････････････

･･･････････････････････

･･････････････････

･････････････････
･････････････････

･･･････････････････

SLEEP TIMER

key on the remote control unit simultaneously to enter the

●

●

●

●

●

key and, whil e the indic ation of “

PICTURE
GAME
LOW LIGHT
RF AFC CHK
VCO(CW)

This sets the setting values (adjustment values) of the VIDEO/CHROMA and DEFLECTION circuits.
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.
This is used when the IF VCO is adjusted.

SLEEP TIM ER 0 MIN.

SERVICE MENU

HIGH LIGHT

●

[Do not adjust]

” is being displayed, press

screen ① shown in the next figure page.

DISPLAY

C-N14210

key and

VIDEO

(3) Enter the any setting ( adjustment ) mode

PICTURE mode

"

1) If select an y of PI CT URE item , and th e LE FT / RIG HT key is pr essed f r om SER VICE ME NU ( MA IN MENU ) , th e s creen ② will be
displayed as shown in figure page late r.

2) Then the UP / DOWN key is pressed, the PICTURE mode screen ③ is displayed, and the PICTURE setting can be performed.

GAME, LOW LIGHT, 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, and t h e LEFT / RIG HT ke y is press ed f rom
SERVICE MENU ( MAIN MENU ), the screens ④ ⑤ ⑥ ⑦ ⑧ will be displayed as shown in fi gure page later.

2) Then the s ett in gs or verificat i ons c an b e performed.

No. 51831

11

C-N14210

(CW)

SERVICE MENU (MAIN MENU)

①①①①

SERVICE MENU
PICTURE

GAME
LOW LIGHT HIGH LIGHT
RF AFC CHK
VCO

SELECT BY
OPERATE BY

HIGH LIGHT MODE

⑥⑥⑥⑥

HIGH LIGHT

***

***

******

RF AFC CHK MODE [DO NOT ADJUST]

⑦⑦⑦⑦

EXIT BY

EXIT BY

EXIT

***

***

******

EXIT

SCREEN

②②②②

1. BRIGHT
STATUS

IT

IT

SELECT BY

EXIT BY

EXIT

IT

SELECT BY
OPERATE BY

PICTURE MODE

③③③③

***

***

******

********

********

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

EXIT BY

EXIT

IT

RF AFC
FINE
STATUS

SELECT BY
OPERATE BY

⑧⑧⑧⑧

TOO HIGH
ABOVE REFERENCE
BELOW REFERENCE
TOO LOW

SYNC : YES

********

********

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

VCO (CW) MODE

ON

***

***

******

EXIT BY

EXIT

EXIT BY

EXIT

IT

GAME MODE

④④④④

TINT
COLOR
PICTURE
BRIGHT
DETAIL

IT

SELECT BY
OPERATE BY

BRIGHT

BRIGHT

***

***

******

***

***

******

***

***

******

***

***

******

***

***

******

LOW LIGHT MODE

⑤⑤⑤⑤

*** *** ***

*** *** ***

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

***

***

******

EXIT BY

EXIT

EXIT BY

EXIT

IT

IT

12

No. 51831

(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 th e key is rel eased the SET TING VALUE will b e st ored
(memorized).

3) EXIT key

Return t o the previous sc reen.

(5) Releasing SERVICE MENU

1) After returning to the SERVICE MEN U upon completion of the
setting (adjustment) work, press the EXIT key again.

The settin gs f or LOW LIGHT and HIGH LIGHT are d escrib ed in t he

★

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

★

ADJUSTMENT.

SETTING
ITEM

SELECT BY
OPERATE BY

1. BRIGHT
STATUS

SELECT BY
OPERATE BY

PICTURE MODE

TINT
COLOR
PICTURE
BRIGHT
DETAIL

***

***

******
***

***

******
***

***

******
***

***

******
***

***

******

GAME MOD E

***

***

******

********

********

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

EXIT BY

EXIT

EXIT BY

EXIT

IT

C-N14210

IT

INITIAL
SETTING VALUE

↓ (Adjust)

SETTING VALUE

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

No. 51831

13

C-N14210

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 it ems in t h e video m ode No.7 EXT BRI ., No.8 E XT PI C . , No.11 EXT T I NT and N o.12 EXT COL . are linked t o the 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 the s et t in g items in t he video m ode are r evised au t om atically t o the s am e v alues in th e TV mod e.(The initial setting
values given in ( ) are off-set values.)

When the f our items ( No.7, 8, 11 and 12) are adjusted in the video mode, the s et ti ng v al ues in each item are revised independ ently.

#

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.DETAIL)

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

11. E XT 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
20 OSC SEL 0 / 1 0

0 ～ 127
0 ～ 127
0 ～ 63

0 ～ 127
0 ～ 127

25

±

25

±

0 ～ 63

25

±

25

±

0 ～ 63
0 ～ 7
0 ～ 31
0 ～ 31
0 ～ 15

0 ～ 63

(-2)
(-2)

(+9)
(+3)

64
60
23

57
55

25

20

0
20
23
14

40

14

No. 51831

GAME MODE

"

C-N14210

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 -2

±

15

±

0 ～ 255
0 ～ 255
0 ～ 255

0 ～ 255
0 ～ 255

±

±

-10

+10

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. 51831

15

C-N14210

ADJUSTMENTS

B1 POWER SUPPLY

Item

Check of
B1 POWER
SUPPLY

Measuring

instrument

DC Voltmeter TP-91 (B1)

Test point Adjustment part D escripti on

TP-E(

)

""""

ADJUSTMENT OF VIDEO / DEF. CIRCUIT

Item

IF VCO
adjustment

Measuring
instrument

Signal
generator

TOO HIGH
ABOVE REFERENCE
BELOW REFERE NCE
TOO LOW

Test point Adjustment part D escripti on

CW TRANSF. (T131)

[VCO(CW)] MODE

YELLOW

1. Receive a bl ac k-and- white signal.

2. Connect t h e DC Voltmeter t o TP-91 ( B 1) and TP-E(
page of Adjustment Locations).

3. Confirm that the voltage is DC134V

Und er n orm al c onditions, no adjustm ent is r equ 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 r een.

+2V

-2.5V.

) (See the

""""

RF. AGC
adjustment

FOCUS
adjustment

SYNC : YES

Signal
generator

EXIT BY

EXIT

IT

No.19 RF AGC

FOCUS VR
[In HVT]

1. Receive a br oadcast.

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

3. Press the MUTE key and turn off color.

4. W ith the MENU LEFT key, get nois e in the scr een pictur e. (0
side of sett in g value)

5. Press th e MENU R IGHT k ey and s top when nois e disap pears
from the screen.

6. Change to other channels and make sure that there Is no
irregularity.

7. Press the MUTE 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 will be clear and in f in e det ail.

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

16

No. 51831

C-N14210

Item

V.SIZE
Adjustment

Screen

size

92%

Measuring

instruments

Signal
generator

Test point Adjustment part Des cription

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 PO S .

1. Receive a crosshatch signal.

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

3. S et the init ial s etting val ue of the N o.15 H POS. wit h the LE FT /
RIGHT key of the MENU.

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

No. 51831

17

C-N14210

Item

WHITE
BALANCE
(Low Light)
Adjustment

Measuring

instruments

Signal
generator

R CUTOFF

BRIGHT

***

***

******

BRIGHT

REMOTE CONTROL UNIT

Test point Adjustment part Descripti on

[LOW LIGHT] MODE

BRIGHT

G CUTOFF

***

***

******
***

***

******

BRIGHT

R. CUTOFF
G. CU TOFF
B. CUTOFF

SCREEN VR
[In HVT]

B CUTOFF

***

***

******

EXIT BY

IT

EXIT

1. Rec eive a bl ac k-and- w hit e si gn al. ( Color off)

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

3. Set the initial setting value of BRIGHT with the LEFT / RIGHT
key of the remote control unit.

4. Set the init i al s etting valu e of R CU TO FF, G CUT O FF an d B
CUTOFF with the ④ to ⑨ key of the remote control unit.

5. D isplay a sing le hor izont al lin e by p ress ing th e ①key of the
remote control unit.

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

7. Turn th e screen VR gr adually t o the right fr om the left u ntil
either one of the red, blue or green colors appears faintly.

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

9. Turn the sc r een VR to wh ere th e si ngl e h orizon t al lin e gl ows
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

54

R CUTOFF B CUTOFFG CUTOFF

Signal
generator

[HIGH LIGHT] MODE

G DRIVE

HIGH LIGHT

***

*** ***

******

6

987

B DRIVE

***

******

EXIT BY

IT

EXIT

G. DRIVE
B. DRI V E

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

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

3. Set the initial setti ng val u e of G DRIV E and B DRIVE w it h t h e

⑤, ⑥, ⑧

and ⑨ keys of the remote control unit.

4. Adjust the screen u nt i l it becomes white using t h e ⑤, ⑥,
and ⑨ keys of the remote control unit.

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

＊

BALANCE.

Remote Control Unit

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

▲
▲
▼
▼

⑧

18

No. 51831

C-N14210

Item

SUB
BRIGHT
Adjustment

SUB
CONTRAST
Adjustment

Measuring

instruments

Test point Adjustment part Descripti on

No.1 BRIGHT

No.2 PICTURE

1. Rec eive a broadcas t.

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

3. Set the initi al setti ng valu e of the No.1 BRIGHT with th e LEFT
/ RIGHT key of the MENU.

4. If the br i gh tn ess is not best wit h the initial setting valu e, make
fine adjustment of the No.1 BRIGHT until you get the optimum
brightness.

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 contr ast is not b est wi th the initial setting val ue, make
fine adjustment of the No.2 PICTURE until you get the
optimum contrast.

SUB
COLOR
Adjustment

SUB TINT
Adjustment

No.6 C O LOR

No.5 TINT

1. Rec eive 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 b est with the initial setti ng valu e, make fin e

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

1. R ec eive a broadcas t.

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

3. S et the initial setti ng value of th e No.5 TINT with the LEFT /
RIGHT key of the MENU.

4. If the tint is not best wit h t he initial setting value, m ake fine
adjust m ent of th e N o.5 TI NT until you g et th e opt i mu m tint.

No. 51831

19

C-N14210

(

)

PURITY, CONVERGENCE

PURITY ADJUSTMENT

1. Demagnetize CRT with the demagnetizer.

2. Loosen the retainer screw of the deflection yoke.

3. R emo ve t h e w ed g es.

4. Input a green r aster signal fr om the sign al generat or, and t urn
the screen to green raster.

5. Move the defl ec ti on yoke back ward.

6. Brin g the long l ug of the pur ity magnets on the sh ort lug an d
position them horizontally. (Fig.2)

7. Adj us t the gap b etween t w o l ugs s o th at th e G R EEN RAST E R
will come into the center of the screen. (Fig.3)

8. Move the defl ec tion yoke forward, and fix the pos ition of the
deflection yoke so that the whole screen will become green.

9. Insert the wedge to the top side of the deflection yoke so that it
will not move.

WEDGE

CRT

P/C M A GNETS

$

P : PURITY MAGNET
4 : 4 POLES
6 : 6 POLES

(con ver g ence magnets)
(con ver g ence magnets)

Fig.1

PURITY MAGNETS

DEFLECTION

YOKE

P

46

P / C

MAGNETS

10. Input a crosshatch signal.

11. Verify that the screen is horizontal.

12. Inp ut red and blu e raster si gnals, and make su re that pur ity is
properly adjust ed.

Long lug

Short lug

FRONT VIEW

Bring the long lug over the short lug
and position them horizontally.

Fig.2

GREEN RASTER

CENTER

Fig.3

20

No. 51831

STATIC CONVERGENCE ADJUSTMENT

1. Input a crosshatch signal.

2. Using 4- pole conver gence magn ets, overlap th e red and bl ue
lines in the center of the screen (Fig.1) and turn them to
magenta (red/blue).

3. Using 6-pole convergence magnets, overlap the
magent a(red/bl ue) and green lines in th e center of th e screen
and turn them to white.

4. R epeat 2 and 3 above, an d m ak e best conver g ence.

DYNAMIC CONVERGENCE ADJUSTMENT

1. Move t he defl ecti on yok e up an d d own and ov erl ap the lin es i n
the periphery. (Fig. 2)

2. Move the deflection yoke left to right and overlap the lines in the
periphery. (Fig. 3)

3. R epeat 1 and 2 above, an d m ak e best conver g ence.

(FRONT VIEW)

(FRONT VIEW)

BLUE

GREEN

RED

RED

Fig.1

GREEN

C-N14210

BLUE

RED

GREEN

BLUE

After ad jus t m ent , fi x the w ed g e at th e ori gi nal positi on.

●

Fasten the retainer screw of the deflection yoke.
Fix the 6 magnets w ith glue.

(FRONT VIEW)

GREEN

RED

BLUE

BLUE

GREEN RED

Fig.2

BLUE

Fig.3

GREEN

RED

RED
GREEN
BLUE

BLUE
GREEN
RED

No. 51831

21

C-N14210

HOW TO CHECK THE HIGH VOLTAGE HOLD DOWN CIRCUIT

1. HIGH VOLTAGE HOLD DOWN CIRCUIT

After rep air i ng the hi gh voltage 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 CIRC UIT

(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 orarily un pl ug th e power cord.
(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.

POWER
ON OFF

D958

D563

12V

R953

Q561

R564

Q951

RY901

Q562

12V

C562

D562

RESISTOR

14.46k

Ω±

Ω±

Ω±Ω±

3 2 1

R562

R563

Fig. 1

1% 1/4W

C561

CONNECTOR

X

D561

HEATER

HVT

4

R561

22

No. 51831

C-N14210

g

SELF CHECK FUNCTIONS

1. Outline

This mod el h as self check func t i ons gi ven below. When a malf unc ti on has been d etected, the POW E R is turned of f and th e LED 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 Details of det ect ion Method of detectio 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.

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 1­second intervals.

If NG is detected for more t han 1
ms, a malfu nc tion is inter pr eted.

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. 51831

23

C-N14210

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 r euse a chip part af t er r em ovi ng it.

SOLDERING IRON

!

1. Use a high ins ul at i on s old er in g iron with a thin p ointed end of it.

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

ADJUSTMENTS

REPLACEMEN T STEPS

!

How to remove Chip parts

1.
Resistors, capa cit o rs, etc.

%

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

alternately melt the solder at eac h en d.

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

Resistors, capa cit o rs, etc.

%

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

(2) S hif t wi th tweezers an d rem ove the chip p ar 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 melt the solder at each lead . S hift and rem ov e t h e
chip part.

SOLDER

(2) G rasp the chip p art wit h t w e ez ers and plac e it on the sol 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

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

pattern.

24

A

B

C

No. 51831

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

N14210S-MEM #3

VP 0108
DP3051