JVC AV-14F71/VT Service Manual

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Page 1

SER VICE MANUAL

COLOUR TELEVISION

V-14F71

BASIC CHASSIS

AV-14F71

/VT

CONTENTS

SPECIFICATIONS

SAFETY PRECAUTIONS

FEATURES

FUNCTIONS

SPECIFIC SERVICE INSTRUCTIONS

SERVICE ADJUSTMENTS

PARTS LIST

★

OPERATING INSTRUCTIONS

★

STANDARD CIRCUIT DIAGRAM

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13 31

2-1

2 3 4 5 6

No. 51918 Nov. 2001

Page 2

V-14F71

SPECIFICATIONS

ITEM

Dimensions(W×H×D) Mass

TV RF System

Colour System

Picture Tube High Voltage

Receiving Frequency

Intermediate Frequency

Colour Sub Carrier Frequency

RF Mode PAL / SECAM / NTSC3.58 / NTSC4.43 VIDEO Mode PAL / SECAM / NTSC3.58 / NTSC4.43

VHF (VL) 46.25MHz～168.25MHz VHF (VH) 175.25MHz～463.25MHz UHF 471.28MHz～863.25MHz

CA TV

VIF Carrier 38.0MHz

SIF Carrier

CONTENT

462mm×340.5mm×375mm 10kg

B/G, I, D/K, K1,M

Visible size: 34cm measured diagona lly

22.5kV±1.5kV(at zero beam current)

Cable TVs of Mid (X-Z, S1-S10) Super (S11-S20) & Hyper (S21-S41) bands receivable

32.5MHz(5.5MHz) / 33.5MHz (4.5MHz )

31.5MHz (6.5MHz)

32.0MHz (6.0MHz) PAL (4.43MHz),

SECAM (4.40625MHz / 4.25MHz) NTSC (3.58MHz / 4.43MHz)

Power Input

Power Consumption Speaker Audio Output Aerial Input Terminal Input

Output

Headphone jack Remote Control Unit

Operating Voltage AC90～260V, 50 / 60Hz Rated Voltage AC110～240V, 50 / 60Hz

70W (Max) / 47W(Avg.) 5cm×9 cm, Oval type×2 3W (monaural) 75Ω Unbalanced

Video 1V(p-p), 75Ω, RCA×2 (Front / Rear)

Audio

Video 1V(p-p), 75Ω, RCA×1

Audio

500mV(rms) (-4dBs), High impe dance , RCA×2 (Front / Rear)

500mV(rms) (-4dBs), Low impedance, RCA×1

3.5mm min i jack RM-C367GY

(Battery size : AA / R06 / UM-3×2)

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

No. 51918

Page 3

SAFETY PRECAUTIONS

V-14F71

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 warran 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 s afety-relat ed charact eristics. T hese char acteristics 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 which have these special safety characteristics are identified in the parts list of Service manual.

compon ents hav in g su ch feat ures are id entif ied by s hadin g on the sche matics and by (

The us e of a subst itute replacement whic h does n ot

manual.

have the same safety characteristics as the recommended replac ement part shown i n the p arts list of S ervic e manu al may cause shock, fire, or other hazards.

) on the parts list in Service

!!!!

Electrical

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 the GND 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 fus e or any par ts will be broken.

5. If any repair has been made to the chassis, it is recommended that the B1 setting should be checked or adjusted (See ADJUSTMENT OF B1 POWER SUPPLY).

6. The 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 installation, crac ked or melted high v oltage harn ess, poor solderi ng, etc.). To maintain the prop er 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 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. 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.

Isolation Check (Saf ety for El ectrical 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 an d out put t erm in als , Con t r ol knobs, metal c abinet, s crewhead s, earph one j ack, contr ol shafts, etc.) to be sure the product is safe to operate without danger of electrical shock.

(1)

Dielectric Strength 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 exposed metal part having a return p ath to the chassis should withst and a voltage of 3000V AC (r.m.s .) for a period of on e s ec on 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 requires a test equipment not generally found 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.).

AC VOLTMETER

0.15μF AC-TYPE

1500

GOOD EARTH GROUND

(HAVING 1000 OR MORE SENSITIVITY)

10W

/V,

PLACE THIS PROBE ON EACH EXPOSED METAL PART

No.51918

Page 4

V-14F71

FEATURES

New chassis desi gn enables use of an int eractive on-s c r een control.

Wide range voltage (110V～240V) AC p ow er input

With AUDIO / VIDEO INPUT & OUTPUT terminal.

MUTING button can reduce the audio level to zero instantly.

Functional remote control to operate TV set (for channel select, volume control, power ON/OFF, etc.) from a distance.

C bus control utilizes single chip ICs for IF, V/C, DEF. VSM PRESET, PRESET & TURBO TIMER.

By means of AUTO PROGRAM, the TV stations can be selected automatically and the TV channels can also be rearranged automatically.

Built-in ECO MODE (ECONOMY, ECOLOGY)

In accord ance with t he bright ness in a room , the brig htness and / of contras t of the pictur e can be ad justed aut omatically t o make t he optimu m pic tu re which is eas y on th e eye.

Built-in ON TIMER, RETURN + & CHILD LOCK.

SYSTEM BLOCK DIAGRAM

IC702

MEMORY

SCL2/SDA2

IC701

MICRO

COMPUTER

IC301

VIDEO/CHROMA

DECORDER

SCL1/SDA1

TU001

TUNER

No. 51918

Page 5

FUNCTION

FRONT PANEL

■

MENU buttons

CHANNEL －/＋ buttons

VOLUME －/＋ buttons

ECO sensor

REMOTE CONTROL sensor

ON TIMER lamp

POWER lamp

MAIN POWER button

A/V INPUT terminal

HEADPHONE jack

V-14F71

⑩⑨ ①②③④⑤⑥⑦

REAR PANEL

■■■■

REMOTE CONTROL UNIT

■■■■

⑧

4 5

ANT Terminal

VIDEO INPUT Terminal

VIDEO OUTPUT Terminal

AUDIO INPUT Terminal

AUDIO OUT PUT Term i n al

PICTURE BOOSTER key

ECO SENSOR key

COLOUR SYSTEM key

TV/VIDEO key

OFF TIMER key

CHANNEL SCAN key

RETURN＋key

DISPLAY key

CHANNEL－/＋ key

POWER key

PICTURE MODE key

Number (CH.) key

－/－－key

MUTING key

MENU key

MENU ▲/▼ key MENU －/＋ key

VOLUME－/＋ key

No. 51918

Page 6

V-14F71

SPECIFIC SERVICE INSTRUCTIONS

DISASSEMBLY PROCEDURE

REMOVING THE REAR COVER

1. Unplug the power plug.

2. As shown in figure, remove the 5 screws marked a screw marked

3. Withdraw the rear cover toward you.

""""

REMOVING THE MAIN PW BOARD

After rem ovi ng the rear cover.

1. Slight ly raise t he both s ides of th e MAIN PW BOAR D by hand and remove the PWB stopper marked

2. Withdraw the MAIN PW BOARD backward. (If necessary, take off the wire clamp , connectors etc.)

from the fro n t ca bi n e t.

####

REMOVING THE SPEAKER

After rem ovi ng the rear cover.

1. As shown in figure, remove the

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

screws marke d

!!!!

$$$$

and

CHECKING THE MAIN PW BOARD

1. To check the back side of the PW Board.

4. Pul l out the MAIN PW Board . (Refer to REMO VING THE MAI N PW Board)

1) Erect the PW Board ver t ically s o that you c an easily c h eck the back side of the PW Board.

[CAUTION]

When erecting the PW Board, be careful so that there will be no

co n tactin g with other PW Board .

Before turning on power, make sure that the CRT earth wire and

other conn ec tor are proper l y c onn ec ted.

WIRE CLAMPING AND CABLE TYING

1. Be sure to clamp the wire.

2. Never remove the cable tie used for tying the wires together. Should it be inadvertently removed, be sure to tie the wires with a new cable tie.

No. 51918

Page 7

FRONT CABI.

CRT SOCKET

PWB

MAIN PWB

SPEAKER

V-14F71

(

××××

POWER

CORD

REAR

COVER

(

××××

(

××××

No. 51918

Page 8

V-14F71

REPLACEMENT OF MEMORY ICs

1. MEMORY ICs

This mod el uses memory ICs . This m em ory IC data are f or pr op er oper ation of the vid eo an d d efl ec t i on circuits. When replaci n g m emor y ICs , be sure to use ICs written with the ini ti al v alu es of d ata.

2. PROCEDURE FOR REPLACING MEMORY ICs

(1) Power off

Switch th e p ow er off and disconn ec t t h e power pl ug from the wall outlet.

(2) Replace ICs

Be sure to u se memory ICs written with the initial data values.

(3) Power on

Connect the power plug int o t h e wall outlet and s witc h t h e power on.

(4) Check and set SYSTEM CONSTANT SET

It must not adjust without adjustment signals.

・・・・

1) Press the

DISPLAY

CONTROL UNIT simultaneously.

2) The SERVIC E ME NU screen of Fig. 1 will be displ ay ed.

3) While the SER VICE MENU is dis play ed, ag ain pr ess th e

PICTURE MODE

screen of Fi g. 2 will be displayed .

4) Check t h e s ett i ng values of the SYST EM C O N S T A NT SET of Table 1 If the value is dif ferent, s elect the s etting it em with the

the correct value with the

5) Press the

DISPLAY

(5) Receive channel of sett i ng

Refer to the (channels preset) as described

(6) User Setting

Check th e user set ting val ue of T able 2, and if setti ng valu e is diff erent, s et the correct value. For setting, refer to the

(7) Setting of SERVICE MENU

Verif y the s etting items of th e SE RV IC E ME NU , an d r es et w h ere necessary. For setting, refer to the

KEY ASSIGNMENT OF REMOTE CONTROL UNIT

key and the

PICTURE MODE

key of the REMOTE

DISPLAY

key s imultaneous ly, and th e SYSTEM CONSTAN T SET

▼/▲key, and set

- / + key.

key twice, and return to the normal screen.

OPERATING INSTRUCTIONS

SERVICE ADJUSTMENTS

and set the receive channels

key an d

SERVICE MENU

1.IF 2.V/C

3.DEF 4.VSM PRESET

5.PRESET

6.TURBO TIMER OFF

1-6 SELECT DISP : EXIT

******

***********

***** **

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

**********

*** ** **

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

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

**.***

****

** ***

** ***** ***

Fig.1

SYSTEM CONSTANT-

SYSTEM CONSTANT SET 1

COLOUR : MULTI BILINGUAL : NO TUNER : MU ECO SENSOR : YES LANGUAGE : E / V

: SELECT

- / + : OPERATE DISP : EXIT

SYSTEM CONSTANT-

SYSTEM CONSTANT SET 2

B/B SOUND : OFF LOCK : 180 COLOUR AUTO : NO QSS : MINT ALC : NO TEXT RATE : 20

: SELECT

- / + : OPERATE DISP : EXIT

SYSTEM CONSTANT-

***

******

ⅠⅠⅠⅠ

ⅡⅡⅡⅡ

ⅢⅢⅢⅢ

SYSTEM CONSTANT SET 3

PICTURE

MODE key

NUMBERS

AMP TUNER : YES VNR : YES TEXT TABLE : CYL

key

: SELECT

- / + : OPERATE DISP : EXIT

Fig.2

DISPLAY ke y

- / + key

key

▼/▲

No. 51918

Page 9

SETTING OF SYSTEM CONSTANT SET

Setting item Setting contents Setting value

V-14F71

COLOUR

BILINGUAL

TUNER

ECO SENSOR

LANGUAGE

B/B SOUND

LOCK

COLOUR AUTO

QSS

ALC

TEXT RATE

AMP TUNER

VNR

TEXT TABLE

MULTI.

YES

YES NO

E/V E

ON OFF

YES 10 20

YES

MINT

YES NO

10 20 40 80

YES

RA CYL

MQSS

PALTRIPLE

230 240 250

～

MULTI

YES

E/V

OFF

180

MINT

YES

CYL

Table 1

USER SETTING VALUES

Setting item Setting value Setting item Setting value

SUB POWER ON LANGUAGE VIET CHANNEL POSITION 1 POSITION CHANNEL PRESET Refer to OPERATING INSTRUCTION VOLUME Ab out 10 ECO SENSOR OFF

TV/VIDEO ON SCREEN DISPLAY

COLOUR SYSTEM PAL ON TIMER PR1 0:00 SOUND SYSTEM B / G BLUE BACK OFF OFF TIMER OFF OSD.Shows 00 CHILD LOCK OFF PICTURE MODE (VSM) BRIGHT PICTURE BOOSTER OFF

TV VNR OFF POSITION INDICATION AUTO SHUTOFF OFF

Table 2

No. 51918

Page 10

V-14F71

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”.

3. V/C

Setting item

2. DRIVE

3. BRIGHT

4. CONT.

5. COLOUR

6. TINT

7. SECAM BL ADJ.

8. SHARP

9. AMP T.SHARD

3. DEFLECTION

1. VER. POSITI ON

2. HOR. POSITION

Do Not Adj.

Setting item Variable range

Colour system

RED GREEN1. CUT OFF BLUE RED BLUE

TV VIDEO

Do Not Adj.

Variable

range

-128～+127

-127～+127

-63～+63

-31～+31

-32～+31

-04 ～ +03 - 2 - 3

-16 ～ +15 +1 + 4

PAL SECAM NTSC 3.58 NTSC 4.43

-50

+ 0

+ 0 + 0 + 0

+ 0

- 15(Fixed) +5(Fixed)

- 14

fv : 50Hz MODE fv : 60Hz MODE

Initial settin g val ue

+ 0 + 0 + 8 + 0

Initial settin g val ue

3. VER. HEIGHT

4. VER. LINEARITY

5. VER. SCURVE

6. HOR. VCO ADJUST

4.VSM PRESET

VSM mode

Setting item

SETTING VALUE

TINT COLOUR BRIGHT CONT. SHARP

SETTING VALUE

Do Not Adj.

VSM preset

-64 ～ +63 -40 + 0

-32 ～ +31 +13 - 3

-32 ～ +31 -32 + 0

-63 ～ +62 + 0 + 0

BRIGHT STANDARD SOFT

+15 +15 +15 +30 +15 +11 +15 +12

No. 51918

Page 11

5. PRESET The items in the following table, it is no requirement for adjustment.

If values had changed by the miss operation, set the initial setting values in the following table.

Colour System Do Not Ad just

V-14F71

Setting item

1. C TRAP FIX

2. SHARP PEAK

3. ABL

4. GAMMA

5. Y. DELAY TIME

6. BLACK EXP START

7. C-BPF

8. CW / SCP

9. VIF DET LEVEL

11. IF AGC MIN

12. VIF AGC

13. VIF PMOD

19. VNR

VIDEO

Initial setting value (Fixed value)

PAL SECAM NTSC 3.58 NTSC 4.43

1 1 1 1 0 0 0 0

1 1 1 1 0 0 0 0 0 2 2 3 0 2 0 2

＋3 ＋3 ＋3 ＋3

1 1 0 0 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

15 15 15 15

20. RGB LIM

21. RGB LIMIT LEVEL

23. TEXT H. POSITION

24. READ DATA

Sound System D o Not Adju st

Setting item B/G I D/K M

10. SIF DET LEVEL

14. SIF BPF BW ADJUST

15. SIF TRAP FO ADJUST

16. SIF TRAP FO ADJUST 2

17. SIF -TR AP

18. SIF -BPF

22. SIF SW

1 1 1 1 2 2 2 2

-3 -3 -3 -3

＋

0 0 0 0 0 0 0 1 1 1 1 0

＋

No. 51918

Page 12

V-14F71

REPLACEMENT OF IC301 (IF V/C DECODER)

For the IC3 01(IF V/C DEC ODER) of this model , all data ar e written in t he micro-c omputer . So, write t he data in the micro-

comput er i n ac cor d ance with the fol lowing proc ed ur e s bef ore starting ad ju st m ent.

RE PLACI NG PR OC EDUR ES

Turn the POWER OFF.

(1)

Replace the IC301 with a new one.

(2)

While pr essi ng MENU butt on an d VO L+ butt on ON the F RON T C ABINET si mult aneous l y, t urn th e PO WER ON. W hen th e P OW ER is

(3)

turned ON, the data is written in the micro-computer immediately.

LOCATIONS OF FRONT PANEL BUTTONS AND LAMPS

MENU buttons

CHANNEL －/＋ buttons

(MENU －/＋ buttons)

VOLUME －/＋ buttons

(MENU －/＋ buttons)

ECO sensor

REMOTE CONTROL sensor

ON TIMER lamp

POWER lamp

MAIN POWER button

No. 51918

Page 13

SERVICE ADJUSTMENT

BEFORE STARTING SERVICE ADJUSTMENT

1. There are 2 way of adjusting this TV: One is with the

REMOTE CONTRO L UNIT and t he oth er is t he conv ention al method using adjustm ent pa rts and components.

2. T he adju stment with t he REM OTE C ONTR OL UNIT is m ade

on the basis of the initial setting values. The setting values which adjust the screen to it s o p ti mum condit i on may differ from the initial setting values.

3. Make sure that connection is correctly made to AC power

source.

4. Turn on the p ower of the set and equipm ent before us e, and

start the adjustment procedures after waiting at least 30 minutes.

5. Unl ess other wis e specifi ed, prep are the mos t suitab le rec eption

or input signal for adjustment.

6. Never touch a ny adjustment parts, which are not specified in the list for thi s a djust men t VR s, tr an sfor ms, cond en ser s, etc.

7. Preparation for adjustment Unless oth erwise sp ec if i ed in the adjus t m en t i ns t ruc t ions, pr es et the following functions with the REMOTE CONTROL UNIT.

User mode positi on

PICTURE MODE (VSM) BRIGHT VNR OFF TINT / COLOUR / BRIGHT

CONT. / SHARP BLUE BACK OFF

OFF TIMER OFF ECO SENSOR OFF AUTO SHUT OFF OFF

V-14F71

CENTER

MEASURING INSTRUMENT AND FIXTURES

1. DC voltmeter (o r digital voltm eter)

2. Oscilloscope

3. Signal generator (Pat tern generator) [PAL / SECAM / NTSC]

4. Remote control unit

ADJUSTMENT ITEMS

Adjustment item Adjustment item

B1 POWER SUPPLY

FOCUS adjustm ent VSM PRESET setting IF circuit adjustment

V/C (Video / Chroma) circuit adjustment

DEFLECTION circuit adjustment

PURITY/ CONVERGENCE adjustment

No. 51918

Page 14

V-14F71

BASIC OPERATION OF SERVICE MENU

The adjustment using SERVICE MENU

The followi ng adjustm ent items us e the SERVICE ME NU in the seri es of the adjust ment. The adjus tments are made on the basis of the initial setting values. The adjustment values which adjust the screen to the optimum condition can be different from the initial setting values. With the SERVICE MENU, various settings can be made, and they are broadly classified in the following items of settings.

1.IF

･･･････････････････････

2.V/C

･･････････････････････

3.DEF

･････････････････････

4.VSM PRESET

5.PRESET

6.TURBO TIMER

Key operation of the SERVICE MENU

････････････

･････････････････

････････････

[Enter to SERVICE MENU]

Press the

DISPLAY

key and th e

UNIT simultaneously. Then enter the SERVICE MENU mode as shown in Fig.1.

Adjustment of the IF circuits. Adjustment of the VIDEO/CHROMA circuit. Adjustment of the DEFLECTION circuit. Adjustm en t of th e initial settin g val u es of VSM c ondition as ST AN D AR D, SO FT and BRIGHT . (VSM : Video Status Memory) Adjustmen t of the RF circuit

[Do not adjust]

For quick s et ti ng t h e TI MER c ou nt value, adjustable not onl y b y mi nuets but als o by s ec on d.

[Should be OFF]

PICTURE M ODE

key of the REMOTE CONTROL

[Exit from SERVICE MENU]

When complete the adjustment work, press the

DISPLAY

key to return to the SERVICE MENU. And then press the

DISPLAY

key again, return to the normal screen.

[Select from SERVICE MENU]

In SERVICE MENU, pr ess the number ( 1～6) key of the remote control unit, to select any of the adj ustment it ems .

The colours which selected item characters are changed.

KEY ASSIGNMENT OF REMOTE CONTROL UNIT

SERVICE MENU

1.IF 2.V/C

3.DEF 4.VSM PRESET

5.PRESET

6.TURBO TIMER OFF

1-6 SELECT DISP : EXIT

******

***********

***** **

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

**********

*** ** **

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

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

Fig.1

**.***

****

** ***

** ***** ***

***

******

DISPLAY ke y

PICTURE

MODE key

NUMBERS

key

▼/▲

No. 51918

－/＋

key

Page 15

[Method of setting]

1. IF

[1. VCO]

1 Key

① ② ③ ④

[2. DELAY POINT]

① ② ③ ④

･････････････････････････

1 Key

･････････････････････････

T h e VCO (CW) screen wil l be dis p layed a allow m ark wh en the AF C vol t age is at a certain l evel . DISPLAY Key

1 Key

･････････････････････････

2 Key

･････････････････････････

MENU -/+

DISPLAY Key

･･････････････････

･････････････････････

･･････････････････

Selec t Selec t

As you press this key twice, you will return to the

Selec t Selec t Set (adjust) the setting values of the setting items. When this is pre ssed twice, you will return to the

1.IF

1.VCO

1.IF

2.DELAY POINT

SERV ICE MEN U

SERVICE MENU

V-14F71

2.V/C, 3.DEF

2~4Key

①

MENU ▼/▲ Key

②

MENU -/+

③

DISPLAY Key

④

6.TURBO TIMER

By pressing the 6 key, you can change the ON or OFF (

①

and

4.VSM PRESET

･･･････････････････････

･･････････････

･････････････････････

･･････････････････

(Should be OFF)

(It is easier to checks the Operation of TIMER) If you turn the TV power off, this setting becomes OFF automatically.

Select on e from Select setting items. Adjust the values of the items. When this is pressed , return to the

If it is ON, the timer in TIMER mode changes from 1 minute into 1 sec tempora rily .

2. V/C, 3. DEF

should be OFF

and

4. VSM PRESET

SERV ICE MEN U

No. 51918

Page 16

V-14F71

SERVICE MENU FLOW CHART

SERVICE MENU

1.IF 2.V/C

3.DEF 4.VSM PRESET

5.PRESET

6.TURBO TIMER OFF

1-6 SELECT DISP : EXIT

******

****** *****

***** **

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

**********

*** ** **

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

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

6.TURBO TIMER

** ***

** ***** ***

OFF

ON /

**.***

***

****

******

OFF

(By pressi ng 6-key)

SUB MENU 1. IF

1. VCO

2. DELAY POINT

1-2 : SELECT DISP : EXIT

SUB MENU 2. V/C

V/C PAL

1. CUTOFF

50Hz

: SELECT

- / + : OPERATE DISP : EXIT

(R) (G) (B)

* ** * ** * **

VCO (CW)

TOO HIGH ABOVE REFERENCE JUST REFERENCE BELOW REFE RENCE TOO LOW AFT ADJUST VCO ADJUST FINE

DELAY POINT UHF

AGC TAKE-OVE R

: OPERATE DISP : EXIT

***.**

DISP : EXIT

MHz

***(**)

***(**)***(**) ***(**)

***(**)

***(**)***(**)

SUB MENU 3. DEF

DEF

1. VER. POSITION

50Hz

: SELECT

- / + : OPERATE DISP : EXIT

PAL

***

SUB MENU 4. VSM PRESET

BRIGHT

TINT COLOUR BRIGHT CONT. SHARP

: SELECT

- / + : OPERATE DISP : EXIT

** ** ** ** **

SUB MENU 5. PRESET

PAL

No. 51918

B/G

***

PRESET

1. C-TRAP FIX

50Hz

: SELECT

- / + : OPERATE DISP : EXIT

Page 17

ADJUSTMENT LOCATIONS

V-14F71

F901

TOP

CRT SOCKET PWB

TP-47R

TP-47G

MAIN PWB

IC701

(SOLDER SIDE)

TP-47B

TP-E

CRT EARTH WIRE (BRAIDED ASS'Y)

IC702 MEMORY IC

FRONT

DEG

TU001

IC301

1Pin TP-91(B1) 2Pin NC 3Pin X-ray2 4Pin X-ray1 5Pin TP-E( )

HVT

UPPER:FOCUS LOWER:SCREEN

No. 51918

Page 18

V-14F71

ADJUSTMENTS

B1 POWER SUPPLY

Item

Check of B1 Power

Measuring

instrument

Signal generator

Supply

DC Vol t meter

FOCUS ADJUSTMENT

Item

Adjustment of FOCUS

Measuring

instrument

Signal generator

IF CIRCUIT ADJUSTMENT

Item

Measuring

instrument

Test point Adjustment part Des cription

TP-91 (B1) TP-E (

)

####

1. Inp ut a w h ol e blac k sig n al.

2. Connect a DC voltmeter to TP-91(B1) and TP-E (#).

3. Make sure that the voltage is DC114.5±1.5V.

Test point Adjustment part Des cription

FOCUS VR [In HVT]

1. Input a cross-hatch signal.

2. While watc hing t he scr een, ad just t he FOCU S VR t o mak e the vertic al and hor i z ontal lines as fin e and s h ar p as poss i bl e.

3. Make sure that when the screen is darkened, the lines remain in good focus.

Test point Adjustment part Des cription

Adjustment of VCO(CW)

Signal generator

Remote control unit

VCO (CW)

TOO HIGH ABOVE REFERENCE JUST REFERENCE BELOW REFE RENCE TOO LOW AFT ADJUST VCO ADJUST FINE

DISP : EXIT

ADJUSTMENT AT THIS POINT IS USELESS

***.**

MHz

***(**)

***(**)***(**) ***(**)

***(**)

***(**)***(**)

ADJUSTMENT POINT

1. VCO

YELLOW

Do not adjust

TOO HIGH

ABOVE REFERENCE

JUST REFERENCE

BELOW REFERENCE

TOO LOW

Please use signal generator which is correct proof about the

●

sending frequency.

1. Input the PAL full colour bar (210.25MHz) signal.

2. Select 1.IF from the

3. Pr ess 1 key and select

4. Select

5. Press

VCO ADJUST MENU

SERV ICE MEN U

1.VCO

with

-/+ key until the colour of the characters TOO

HIGH ch anges blu e to yel low. Th en gr ad uall y pr ess t he

▲/▼ key.

-/+ key until the TOO LOW changes yellow. At this time, confirm th a t the val ue of

6. Select

7. Press

AFT A D JUST MENU

VCO ADJUST

with

-/+ key until the char acters JUST REFER ENCE

is near +00.

▲/▼ key.

changes blue to yellow.

8. Press the

DISPLAY

key three times to return to normal scree n .

No. 51918

Page 19

V-14F71

Item

Adjustment of DELAY POINT (AGC)

Measuring

instrument

Signal generator

Remote control unit

DELAY POINT UHF

AGC TAKE-OVER

- / + : OPERATE DISP : EXIT

Test point Adjustment part Des cription

DELAY POINT

(AGC TAKE-OVER)

1. Inp ut a bl ac k an d w hit e si gnal (colour off).

2. Select

3. Select control un it.

4. Set the setting values of the setting items as shown bellow table.

5. T hen adjust the MENU - or + key u ntil video nois e disappears.

6. Turn to other channels and make sure that there are no irregularities.

from the SERVICE MENU.

1. IF

2. DELAY POINT

by pres sing t he 2 key on the remote

Setting Item Variable range Initial setting value

DELAY POINT

(AGC TAKE OVER)

NTSC 3 . 58 OTHER

0～127

No. 51918

Page 20

V-14F71

VIDEO / CHROMA CIRCUIT ADJUSTMENT

The setting (adjustment) using the REMOTE CONTROL UNIT is made on the basis of the initial setting values. The setting values which adjust the screen to the optimum condition can be different from the initial setting values.

Do not change the initial setting values of the setting items not listed in “ADJUSTMENT”.

Item

Adjustment of WHITE BALANCE (Low light)

Measuring

instrument

Test point Adjustment part Des cription

Signal generator

Remote control unit

V/C AUTO

1. CUTOFF

50Hz

: SELECT

- / + : OPERATE DISP : EXIT

(R) (G) (B)

* ** * ** * **

KEY ASSIGNMENT OF REMOTE CONTROL UNIT

CUTOFF OFF

(H.LINE OFF)

CUTOFF ON

(H.LINE ON)

R. CUTOFF( )

▲

R. DRIVE( )

▲

▼

R. DRIVE( )

▼

123

1. CUT OFF (R) CUT OFF (G) CUT OFF (B)

SCREEN VR [IN HVT]

G.CUTOFF( ) B. CUTOFF( ) B. DRIVE( )

B. CUTOFF( ) B. DRIVE( ) G.CUTOFF( )

▲

1. Inp ut a bl ac k an d w hit e si gn al ( colour off) .

2. Select (R), (G) and (B) .

OFF

from the SERVICE MENU, then select

2. V/C

1. CUT

3. Set each value to initial setting value with 4～9 keys of the

remote control unit.

4. Press the

key of the rem ote control unit to show the singl e

horizontal line on screen.

5. Turn the

SCREEN VR

fully counter-clockwise, then slowly turn it clockwis e to where one of a red, blu e or green colour is f aintly visible.

6. Use keys

of the remote c ont rol unit an d adjus t the oth er 2

4～9

colours which except t he appeared c olour to wh ere the singl e horizontal line appears white.

7. Turn the

SCREEN VR

to where the single horizontal line glows

faintly.

8. Press the

9. Press the

1. CUT OFF

key to turn off th e si ngl e h or iz on tal line.

DISPLAY

Adjustment item

key twice to return to the normal screen.

Variable

range

-128～+127

Initial settin g

value

-50

Adjustment of WHITE BALANCE (High light)

Signal generator

Remote control unit

2. DRIVE (R DRIVE (B)

)

1. Inp ut a bl ac k and white sign al (colour off ).

2. Select

3. Select

from the SERVICE MENU.

2. V/C

2. DRIVE (R) / (B)

with MEN U ▼/▲ key, and set each value to i niti al set ting val ue wit h 4 and 7 or 6 and 9 keys of th e remote control unit.

4. Use the keys

and 7 or 6 and 9 to produc e a wh it e sc reen

5. Pres s the DISPLAY key twice to return to the nomal screen.

V/C AUTO

(R)

2. DRIVE

50Hz

: SELECT

- / + : OPERATE DISP : EXIT

(B)

* ** * **

Adjustment item

2. DRIVE

No. 51918

R B

Variable

range

-128～+127

Initial settin g

value

+0 +0

Page 21

V-14F71

Item

Adjustment of SUB BRIGHT

Adjustment of SUB CONT.

Adjustment of SUB COLOUR

ⅠⅠⅠⅠ

Measuring

instrument

Remote control unit

Test point Adjustment part Des cription

3. BRIGHT

4. CONT.

5. COLOUR [Method of adjustment without measuring instrument]

PAL COLOUR

1. Receive any br oad cast.

2. Select

3. Select

4. Set the initial s etting value wit h the MENU - or + key.

5. If the brigh tness is n ot the best w ith the initi al set valu e, mak e fine adjus t m ent un til you get the best bri ghtness.

1. Receive any br oad cast.

2. Select

3. Select

4. Set the initial s etting value wit h the MENU - or + key.

5. If the contrast is not the best with the initial set value, make fine adjust m ent un t il you get t h e bes t c ontrast.

1. Receive a PAL br oad cast.

2. Select

3. Select

4. Set the initi al setti ng valu e for PA L COLOUR with th e MENU

- or + key.

5. If the colour is not th e best with the initi al set value, m ake fine

adjust m ent un t il you get t h e bes t c ol our .

from SERVICE MENU.

2. V/C

3. BR I GHT

2. V/C

4. CONT

2. V/C

5. COLOUR

with the MENU ▼/▲key.

from SERVICE MENU.

. with the MENU ▼/▲key.

from the SERVICE MENU.

with the MENU ▼/▲ key.

SECAM COLOUR

NTSC 3.58 COLOUR

NTSC 4.43 COLOUR

No. 51918

1. Receive a SECA M br oadcast.

2. M ak e fine adjustment of SECAM COLO U R as previous l y.

1. Receive a NTSC 3.58MHz broadcast.

2. Make similar fine adjustment of NTSC 3.58 COLOUR as previously.

When NTSC 3.58 adjustment completed, NTSC 4.43 will be automatically set at the respective values.

Page 22

V-14F71

Item

Adjustment of SUB COLOUR

ⅡⅡⅡⅡ

Measuring

instrument

Signal generator

Oscilloscope

Remote control unit

Test point Adjustment part Des cription

TP-47R/G

TP-E (

####

[CRT SOCKET PWB]

5. COLOUR [Method of adjustment using measuring instrument]

)

(A)

(－)

(＋)

1. Input a PAL full field colour bar signal (75% white).

2. Select

3. Select

4. Set the initi al setting value of PAL C OLOUR with th e MENU

- or + key.

5. Connect the osci lloscope bet w een TP -4 7R /G an d TP -E .

6. Adjust PAL CO LO U R to bring the val u e of to

+9V

from SERVICE MENU.

2. V/C

5. COLOUR

(W-G). (Voltage value between (W) and (G))

with the MENU ▼/▲ key.

SECAM COLOUR

1. Input a SECAM full field colour bar signal (75% white).

2. S et the initi al s etti ng val u e of SECAM CO LOUR with the MENU

- or + key.

3. Adjust SECAM COLOUR to bring the value of illustr ation to

(W-G). (Voltage value between (W) and (G))

+5V

in the illustration

(A)

in the

NTSC 3.58 COLOUR

NTSC 4.43 COLOUR

1. Input a NTSC 3.58 full field colour bar signal (75% white).

2. Set the initial setting value of NTSC 3.58 COLOUR with the MENU - or + key.

3. Adjust NTSC 3 .58 COLOUR to bring th e value of illustr ation to

When NTSC 3.58 is set, NTSC 4.43 will be automatically set at the respective valu es .

(W-G). (Voltage value between (W) and (G))

+7V

No. 51918

(A)

in the

Page 23

V-14F71

Item

Adjustment of TINT

ⅠⅠⅠⅠ

Adjustment of TINT

ⅡⅡⅡⅡ

Measuring

instrument

Signal generator

Remote control unit

Signal generator

Oscilloscope

Remote control unit

Test point Adjustment part Description

6. TINT [Method of adjustment without measuring instrument]

1. Input a NTSC 3.58 full field colour bar signal (75% white).

2. Select

3. Select

4. Set the initial s etti ng value of NTS C 3.58 with the MENU

- or + key.

5. If you cannot get the b est tint with the init i al s ett in g val u e, m ak e fine adjustment until you get the best tint.

When NTSC 3.58 is set, NTSC 4.43 will be automatically set at the respective valu es .

1. Input a NTSC 3.58 full field colour bar signal (75% white).

2. Select

3. Select

4. Set the initial s etti ng value of NTS C 3.58 with the MENU

- or +key.

5. Connect the osci lloscope bet w een TP -4 7R /G an d TP -E .

6. Adjust NTSC 3.58 TINT to bring the value of illustr ation to

from SERVICE MENU.

2. V/C

with the MENU ▼/▲ key.

6. TINT

from SERVICE MENU.

2. V/C

with the MENU ▼/▲ key.

6. TINT

(W-Cy). (Voltage value between (W) and Cy))

+5V

TP-47R/G TP-E (

####

[CRT SOCKET PWB]

NTSC 3.58 TINT

NTSC 4.43 TINT

6. TINT [Method of adjustment using measuring instrument]

)

NTSC 3.58 TINT

(B)

in the

(－)

(B)

(＋)

NTSC 4.43 TINT

When NTSC 3.58 is set, NTSC 4.43 will be automatically set at the respective valu es .

No. 51918

Page 24

V-14F71

Item

of SECAM BLACK OFFSET

KEY ASSIGNMENT OF REMOTE CONTROL UNIT

Measuring

instrument

Remote control unit

Signal generator

Test point Adjustment part Descriptio n

COLOUR

123

COLOUR

OFF

7.SECAM BL ADJUST

[Method of adjustment using measuring instrument]Adjustment

1. Receive a SECAM full field colour bar signal.

2. Select

3. Select

4. Set the initial s ett i ng val u e wit h t h e – or + MENU k ey.

5. Switch the ①key (c olour OF F) and ②key (colour ON) on the remote c ontrol and make sure that there is no colour on t he black an d white screen.

6. If the black and w hite screen is not best with t he initial s etting value, make fine adjustm ent until you get th e best blac k and white screen.

7. While watching the screen, adjust the value to be the s ame colour between O N & OF F by T en key on the r emote c ontrol unit.

8. Press t h e DISPLAY key twice to return to the normal screen.

from SERVICE MENU.

2. V/C

7. SE CAM BL ADJUS T

with ▼/▲MENU key.

No. 51918

Page 25

DEFLECTION CIRCUIT ADJUST MENT

There are 2 modes of adjustment (setting value) ------ ① 50Hz mode and ② 60Hz mode ----- depending upon the kind of signals

(vertical frequency 50Hz / 60Hz).

When adjusted in m od e ① , mode ② will be automatically set.

V-14F71

Item

Adjustment of

V.HEIGHT

####

& V.POSITION

Screen

size

92%

Measuring

instrument

Test point Adjustment part Description

Signal generator

Remote control unit

DEF

1. VER. POSIT I ON

50Hz

: SELECT

- / + : OPERA T E DI SP : EXI T

Screen size

AUTO

***

1. VER. POSITION

3. VER. HEIGHT

Picture size 100%

1. Input a cross-hatch si gnal.

2. Select

3. Select

4. Set the initial setting value

from SERVICE MENU.

3. DEF.

1. VER. POSITION

with the MENU ▼/▲ key.

1. VER. POSITION

with the MENU

- / + key.

5. Adjust

1.VER. POSITIO N

to make

as show n in Fig.2 with

V=V"

the MENU - / + key.

6. Select

3. V. HEIGHT

with the MENU ▼/▲ key.

7. Set the initial setting value with the MENU - / + key.

8. As shown in F ig.1, adj ust screen size

of the picture size with the MENU - / + keys of

92%

VER. HEIGHT

and m ake th e ver tic al

remote control unit.

Adjustment

HOR.

####

POSITION

Picture size 100%

Signal

2.HOR. POSITION

generator

Remote control unit

HH"

Fig.2

No. 51918

9. Input a circl e pattern sign al .

10. Select

2. HOR POSITION

with the MENU ▼/▲ key.

11. Set the initial setting value of

MENU - / + key.

12. Adjust

2. HOR. POSITION

to make

with the MENU - / + key.

2. HOR. POSITION

as show n in Fig. 2

H=H"

with the

Page 26

V-14F71

Item

Adjustment of VER. LIN. & VER. SCURVE

Measuring

instrument

Signal generator

Remote control unit

Test point Adjustment part Des cription

When the vertical linearity has been deteriorated

4. VER. LIN.

5. VER. SCURVE

●●●●

remarkably, perform the following steps.

13. Input a cross-hatch signa l.

14. Select

4. VER. LIN.

15. Set the initial setting value of

with the MENU ▼/▲ key.

4. VER LIN.

key.

16. Select

5. VER. SCURVE

with the MENU ▼/▲ key.

17. Set the initial setting value of MENU - / + key.

18. Adjust

4. VER. L I N.

and

5. VER. SCURVE

of each line as shown in Fig.3 on

become uniform.

TOP

BOTTOM

Make sur e th at the adjust ment is prop erly d one on the sc reen of 60Hz mode.

[NOTE]

Adjust t o m ake bot h 50H z & 60Hz ar e th e same v. si ze and

CENTER

fine straight line.

When adjus t ag ai n, adjust 50H z m od e firs t.

When adjus t in 60 Hz m ode, only 60Hz m od e is adj us t .

with the MENU - / +

5. VER. SCURVE

so that the spaces

TOP, CENTER

with the

and

Fig.3

BOTTOM

No. 51918

Page 27

VSM PRESET SETTING

V-14F71

Item

Setting of

VSM

Measuring

instrument

Remote control unit

PRESET

TINT COLOUR BRIGHT CONT. SHARP

: SELECT

- / + : OPERATE DISP : EXIT

BRIGHT

Test point Adjustment part Des cription

TINT COLOUR BRIGHT CONT. SHARP

1. Select

4. VSM PRESET

2. Select BRIGHT with the PICTURE MODE key.

3. Adjust the MENU ▼/▲ and MENU - or + key t o bring the s et values of

TINT

4. Respectively select the VSM PRESET mode for SOFT and

from the SERVICE MENU.

SHARP

～～～～

STANDARD, and make similar adjustment as in 3 above.

Mode

item

** ** ** ** **

TINT

COLOUR

BRIGHT

CONT.

SHARP

BRIGHT STANDARD SOFT

+15

+30 +15 +11

+15 +12

to the valu es sh ow n in the table.

No. 51918

Page 28

V-14F71

PURITY / CONVERGENCE ADJUSTMENT

PURITY ADJUSTMENT

1. Demagnet ize CRT with the demagnetizer.

2. Loosen the retainer screw of the deflection yoke.

3. R emove the wedg es.

4. Input a green r aster signal f rom the sign al gener ator, an d turn the screen to green raster.

5. M ove t h e def l ec tion yoke back w ar d.

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 t h e g ap b etween tw o l ugs s o th at th e G R EE N R AS T E R will come into the center of the screen. (Fig.3)

8. Move the defl ection yok e forward, and fix the position 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.

CRT

WEDGE

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

Fig.1

PURITY MAGNETS

DEFLECTION

YOKE

P / C

MAGNETS

P/C M A GNET S

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

10. Input a crosshatch signa l.

11. Verif y that th e sc reen is horizontal.

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

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

No. 51918

Page 29

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, and m ak e best convergence.

DYNAMIC CONVERGENCE ADJUSTMENT

1. Move t he defl ecti on yok e up an d d own an d overl ap the l ines in 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, and m ak e best convergence.

(FRONT VIEW)

BLUE

GREEN

RED

Fig.1

GREEN

V-14F71

BLUE

RED

GREEN

BLUE

After adjustm ent , fi x the w ed g e at the or i gi nal position.

●

Fasten the retainer screw of the deflection yoke. F i x the 6 m agnets with glu e.

(FRONT VIEW)

GREEN

RED

BLUE

GREEN RED

Fig.2

BLUE

Fig.3

GREEN

RED

RED GREEN BLUE

BLUE

GREEN

RED

No. 51918

Page 30

V-14F71

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 aft 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 point ed end of it.

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

REPLACEMEN T STEPS

How to remove Chip parts

1. Resistors, capacitors, etc

$$$$

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

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

(2) Shift with t w eez er s an d rem o ve t h e ch ip p ar t.

Transistors, diodes, variable resistors, etc

$$$$

(1) Apply extra solder to each lead.

2. How to in stal l Ch ip p arts

Resistors, capacitors, etc

$$$$

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

(2) G rasp the c hip part wit h twe ezers and plac e it on t he s older.

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

as indicated in the figure.

SOLDER

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

alternat el y melt t he s old er at each lead . Shif t and r emov e th e chip part.

Note : After removing the part, remove remaining solder from the

pattern.

SOLDER

No.51918

(4) Then solder leads

C and C.

Page 31

VICTOR COMPANY OF JAPAN, LIMITED

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

AV14F71VT-CK #999

VP 0111 DP7051