JVC AV-21V311, AV-21V511, AV-21V531 Schematic

SERVICE MANUAL

FLAT COLOUR TELEVISION

BASIC CHASSIS

CH3

POWER

MUTING

SYSTEM

CINEMA

COLOUR SOUND

SURROUND

ECO

SENSOR

DISPLAY

Ι/ΙΙ

TV/VIDEO

123

OFF

TIMER

456

PICTURE MODE

789

CHANNEL

RETURN

SCAN

0-/

VOLUME

CHANNEL

RM-C1305

RM-C1305-1H [AV-21V311/B]

AV-21V311 AV-21V511 AV-21V531

POWER

MUTING

SYSTEM

CINEMA

COLOUR SOUND

SURROUND

ECO

SENSOR

DISPLAY

Ι/ΙΙ

TV/VIDEO

123

OFF

TIMER

456

PICTURE MODE

789

CHANNEL

RETURN

SCAN

0-/

VOLUME

CHANNEL

RM-C1303

RM-C1303-1H [AV-21V511

]

POWER

MUTING BASS

SYSTEM

CINEMA

COLOUR SOUND

SURROUND

ECO

SENSOR

DISPLAY

Ι/ΙΙ

TV/VIDEO

123

OFF

TIMER

456

PICTURE MODE

789

CHANNEL

RETURN

SCAN

0-/

VOLUME

CHANNEL

RM-C1307

RM-C1307-1H [AV-21V531/B]

TABLE OF CONTENTS

1 PRECAUTION ......................................................................................................................................................... 1-3

2 SPECIFIC SERVICE INSTRUCTIONS ..................................................................................................................... 1-4

3 DISASSEMBLY ....................................................................................................................................................... 1-7

4 ADJUSTMENT ...................................................................................................................................................... 1-14

5 TROUBLESHOOTING ........................................................................................................................................... 1-31

No.52176

2003/9

SPECIFICATION

Items

Dimentions (W x H x D)

Mass

TV RF System

Colour System TV Mode

Video Mode

Stereo System

Receiving Frequency VHF Low

VHF High

UHF

CATV

Intermediate Frequency

Colour Sub Carrier Frequency

Aerial Input Terminal

Power Input

Power Consumption

Picture Tube

High Voltage

Speaker

Audio Output

Video / Audio Input S-Video (1)

(1/2/3)

Video (1/2/3)

Audio (1/2/3)

Component (2)

Video / Audio Output Video

Headphone

Remote Control Unit

VIF

SIF

Audio

Contents

AV-21V311/B AV-21V511/B AV-21V531/B

64.9cm x 46.5cm x 47.3cm 64.9cm x 47.8cm x 47.3cm

24.5kg 23.5kg

2.4kg (Bass Blaster Unit)

B, G B, G, I, D, K, M

PAL / SECAM PAL / SECAM / NTSC3.58 / NTSC4.43

PAL / SECAM / NTSC3.58 / NTSC4.43

A2(B/G)(Bilingual), Playback A2(B/G)/NICAM (B/G, I, D/K)

46.25MHz - 140.25MHz (AS0 - S6)

147.25MHz - 423.25MHz (S7 - S36)

431.25MHz - 863.25MHz (S37 - CHINA 57)

Mid : X - Z, S1 - S10

Super : S11 - S20

Hyper : S21 - S41

38.0MHz

31.5MHz(6.5MHz) 31.5MHz(6.5MHz), NICAM: 32.15MHz(5.85MHz)

32.0MHz(6.0MHz) 32.0MHz(6.0MHz), NICAM: 31.45MHz(6.55MHz)

32.5MHz(5.5MHz), 32.5MHz(5.5MHz),

A2: 32.26MHz(5.74MHz) A2: 32.26MHz(5.74MHz), NICAM: 32.15MHz(5.85MHz)

33.5MHz(4.5MHz)

4.43MHz(PAL) 4.43MHz(PAL), 4.40MHz/4.25MHz(SECAM)

4.40MHz/4.25MHz(SECAM) 3.58MHz/4.43MHz(NTSC)

75Ω unbal

AC110V - AC240V, 50Hz/60Hz

126W(Max.)/81W(Avg.) 150W(Max.)/93W(Avg.)

Visible size: 50.8cm (Diagonal) / 41.6cm x 31.5cm (H x V)

29kV ±1.5kV (at zero beam current)

6.5cm x 13cm, Oval type x 2 6.5cm x 13cm, Oval type x 2

7W + 7W 7W + 7W +13W

Mini-DIN 4pin x 1

Y : 1V(p-p), positive (negative sync provided), 75

C : 0.286V(p-p) (Burst signal), 75

1V(p-p), negative sync, 75Ω, RCA pin jack x 3

500mV(rms) (-4dBs), high impedance, RCA pin jack x 6

RCA pin jack x 3

Y : 1V(p-p), positive (negative sync), 75

CB/CR: 0.7V(p-p), 75

1V(p-p), 75Ω, RCA pin jack x 1

500mV(rms) (-4dBs), Low inpedance (400Hz when modulated 100%), RCA pin jack x 2

3.5mm stereo mini jack x 1

RM-C1305-1H RM-C1303-1H RM-C1307-1H

(AA/R06/UM-3 battery x 2) (AA/R06/UM-3 battery x 2) (AA/R06/UM-3 battery x 2)

anced

Ø13cm (

Ω

Bass Blaster Unit)

Design & specifications are subject to change without notice.

1-2 (No. 52176)

SECTION 1

PRECAUTION

1. 1 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. 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 manufacturer's warranty and will further relieve the manufacturer of responsibility for personal injury or property damage resulting therefrom.

(3) Many electrical and mechanical parts in the products have

special safety-related characteristics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in the parts list of Service manual. Electrical components

having such features are identified by shading on the schematics and by (

The use of a substitute replacement which does not have the same safety characteristics as the recommended replacement part shown in the parts list of Service manual may cause shock, fire, or other hazards.

(4) Don't short between the LIVE side ground 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 shown by the LIVE : ( GND, the ISOLATED (NEUTRAL) : ( EARTH : ( side GND and ISOLATED (NEUTRAL) side GND or EARTH side GND and never measure the LIVE side GND and ISOLATED (NEUTRAL) side GND or EARTH side GND at the same time with a measuring apparatus (oscilloscope etc.). If above note will not be kept, a fuse or any parts 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 high voltage applied to the picture tube must conform

with 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 voltage conditions should be kept to a minimum, or should be prevented. If severe arcing occurs, remove the AC power immediately and determine the cause by visual inspection (incorrect installation, cracked or melted high voltage harness, poor soldering, etc.). To maintain the proper 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 lead to the ground frame and connecting the other end of the lead through a 10k 2W resistor to the anode button.

!) on the parts list in Service manual.

) side

) side GND and

) side GND. Don't short between the LIVE

(8) When service is required, observe the original lead dress.

Extra precaution should be given to assure correct lead dress in the high voltage circuit area. Where a short circuit has occurred, those components that indicate evidence of overheating should be replaced. Always use the manufacturer's replacement components.

(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 terminals, video/audio input and output terminals, Control knobs, metal cabinet, screw heads, earphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of electrical shock.

a) Dielectric Strength Test

The isolation between the AC primary circuit and all metal parts exposed to the user, particularly any exposed metal part having a return path to the chassis should withstand a voltage of 3000V AC (r.m.s.) for a period of one second.

(. . . . Withstand a voltage of 1100V AC (r.m.s.) to an

appliance rated up to 120V, and 3000V AC (r.m.s.) to an appliance rated 200V or more, for a period of one second.) This method of test requires a test equipment not generally found in the service trade.

b) Leakage Current Check

Plug the AC line cord directly into the AC outlet (do 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.). Any leakage current must 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 line cord directly into the AC outlet (do not use a line isolation transformer during this check.). Use an AC voltmeter having 1000 ohms per volt or more sensitivity in the following manner. Connect a 1500

Ω 10W resistor paralleled by a 0.15µF AC-type

capacitor between an exposed metal part and a known good earth ground (water pipe, etc.). Measure the AC voltage across the resistor with the AC voltmeter. Move the resistor connection to each exposed metal part, particularly any exposed metal part having a return path to the chassis, and measure the AC voltage across the resistor. Now, reverse 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, in tropical area, this must not exceed 0.3V AC (r.m.s.). This corresponds to 0.2mA AC (r.m.s.).

AC VOLTMETER (HAVING 1000Ω/V, OR MORE SENSITIVITY)

0.15µF AC-TYPE

PLACE THIS PROBE

1500Ω 10W

Ω

GOOD EARTH GROUND

ON EACH EXPOSED ME TAL PAR T

(No. 52176) 1-3

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

2. 1 FEATURES

• New chassis design enables use of an interactive on-screen control.

• Pure flat CRT produces fine textured picture in every detail.

• Wide range voltage (110V ~ 240V) for AC power input.

• With AUDIO/VIDEO/S-VIDEO/COMPONENT input terminals.

• I

C bus control utilizes single chip ICs.

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

automatically.

• Built-in DIGITAL ECO MODE (ECONOMY, ECOLOGY).

In accordance with the brightness in a room, the brightness and/or contrast of the picture can be adjusted automatically to make the optimum picture which is easy on the eye.

• Built-in OFF TIMER & RETURN +.

2. 2 MAIN DIFFERENCE LIST

! Items AV-21V311/B AV-21V511/B AV-21V531/B

! MAIN PWB ASS’Y SCH-1150A-BK SCH-1151A-BK SCH-1146A-BK ! PICTURE TUBE A51QDX992X ← A51LVV896X ! FRONT CABINET ASS’Y GG10238-006B-H GG10238-004B-H ←

REMOTE CONTROL UNIT RM-C1305-1H RM-C1303-1H RM-C1307-1H

COLOUR SYSTEM (TV mode) PAL / SECAM PAL / SECAM / NTSC ←

STEREO SYSTEM A2 (Bilingual) A2/NICAM ←

BASS BLASTER None ← BASS BLASTER UNIT

AUDIO OUTPUT 7W + 7W ← 7W + 7W + 13W

POWER CONSUMPTION 126W(MAx.) / 81W(Avg.) ←

150W(Max.) / 93W(Avg.)

2.3 FUNCTIONS

REMOTE CONTROL UNIT

RM-C1305-1H [AV-21V311/B]

MUTING

SYSTEM

COLOUR SOUND

DISPLAY

CINEMA

SURROUND

POWER

ECO

SENSOR

4 5

9 10 11

Ι/ΙΙ

TV/VIDEO

OFF

TIMER

PICTURE

MODE

CHANNEL

SCAN

CHANNEL

123

456

789

RETURN

0-/

VOLUME

12 13

RM-C1305

MUTING key

COLOUR SYSTEM key

SOUND SYSTEM key

DISPLAY key

MENU (/, /) keys

SOUND setting key

POWER key

CINEMA SURROUND key

ECO SENSOR key

Number keys

-/-- key

VOLUME (-/+) keys

(Bilingual Ι / Bilingual ΙΙ )

TV/VIDEO key

OFF TIMER key

PICTURE MODE key

CHANNEL SCAN key

RETURN + key

CHANNEL (-/+) keys

FAVORITE CH keys

1-4 (No. 52176)

RM-C1303-1H [AV-21V511/B]

10 11 12 13

MUTING key

MUTING

SYSTEM

COLOUR SOUND

DISPLAY

4 5

Ι/ΙΙ

TV/VIDEO

OFF

TIMER

PICTURE

MODE

CHANNEL

SCAN

CHANNEL

RETURN

POWER

CINEMA

SURROUND

ECO

SENSOR

123

456

789

0-/

VOLUME

RM-C1303

COLOUR SYSTEM key

SOUND SYSTEM key

DISPLAY key

MENU (/, /) keys

SOUND setting key

(Stereo/Bilingual Ι/Bilingual ΙΙ/Monaural)

TV/VIDEO key

OFF TIMER key

PICTURE MODE key

CHANNEL SCAN key

RETURN + key

CHANNEL (-/+) keys

FAVORITE CH keys

POWER key

CINEMA SURROUND key

ECO SENSOR key

Number keys

-/-- key

VOLUME (-/+) keys

RM-C1307-1H [AV-21V531/B]

1 2

MUTING BASS

SYSTEM

COLOUR SOUND

DISPLAY

CINEMA

SURROUND

POWER

SENSOR

TV/VIDEO

OFF

TIMER

PICTURE

MODE

CHANNEL

SCAN

CHANNEL

Ι/ΙΙ

123

456

789

RETURN

0-/

VOLUME

10 11 12 13 14

RM-C1307

ECO

BASS key

MUTING key

COLOUR SYSTEM key

SOUND SYSTEM key

DISPLAY key

MENU (/, /) keys

SOUND setting key

(Stereo/Bilingual Ι/Bilingual ΙΙ/Monaural)

TV/VIDEO key

OFF TIMER key

PICTURE MODE key

CHANNEL SCAN key

RETURN + key

CHANNEL (-/+) keys

FAVORITE CH keys

POWER key

CINEMA SURROUND key

ECO SENSOR key

Number keys

-/-- key

VOLUME (-/+) keys

(No. 52176) 1-5

FRONT PANEL CONTROLS

REAR TERMINAL

HEADPHONE jack

IN (VIDEO-3) : VIDEO

IN (VIDEO-3) : AUDIO L/MONO

IN (VIDEO-3) : AUDIO R

MENU () button

CHANNEL (-/+) buttons

5 6 10 118

VOLUME (-/+) buttons

ECO sensor

Remote control sensor

POWER lamp

MAIN POWER button

BASS

SPEAKER

OUT

VIDEO-1

INPUT

OVER

MONO

5 6 10 118

COMPONENT

(

VIDEO-2

INPUT

)

MONO

10 11

OUTPUT

VIDEO-1 INPUT TERMINAL

OUTPUT TERMINAL

1-6 (No. 52176)

[AV-21V311/B, AV-21V511/B]

S-VIDEO

VIDEO

AUDIO L/MONO

AUDIO R

VIDEO

AUDIO L

AUDIO R

RRRC

[AV-21V531/B]

COMPONENT (VIDEO-2) INPUT TERMINAL

Y/VIDEO

AUDIO L/MONO

AUDIO R

Aerial input terminal

BASS SPEAKER OUT

SECTION 3

DISASSEMBLY

3.1 DISASSEMBLY PROCEDURE

3.1.1 REMOVING THE TWIN PORT BASS BLASTER UNIT [AV-21V531/B]

• Unplug the power supply cord.

(1) Disconnect the TWIN PORT BASS BLASTER UNIT's

cord from the rear of the TV set.

(2) Remove the TWIN PORT BASS BLASTER UNIT by

pulling it upwards.

NOTE:

After removing the TWIN PORT BASS BLASTER UNIT, proceed to the following procedure.

3.1.2 REMOVING THE REAR COVER

• Unplug the power cord.

(1) Remove the 9 screws [A] and 4 screws [B] as shown

in Fig.1.

(2) 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.

3.1.3 REMOVING THE MAIN PW BOARD

• Remove the REAR COVER.

(1) Slightly raise the both sides of the MAIN PWB by hand. (2) Withdraw the MAIN PWB backward.

(If necessary, take off the wire clamp and connectors, etc.)

3.1.4 REMOVING THE SPEAKER

• Remove the REAR COVER.

(1) Remove the 2 screws [C] as shown in Fig.1. (2) Follow the same steps when removing the other hand

SPEAKER.

3.1.5 CHECKING THE MAIN PW BOARD

• To check the back side of the MAIN PWB.

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

PW BOARD).

(2) Erect the MAIN PWB vertically so that you can easily

check its back side.

CAUTIONS:

• Before turning on power, make sure that the CRT earth

wire and other connectors are properly connected.

• When repairing, connect the DEG. COIL to the DEG.

connector on the MAIN PWB.

3.1.6 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. 52176) 1-7

FRONT CABINET

PICTURE TUBE

SPEAKER

MAIN PWB (CRT SOCKET PWB)

MAIN PWB

(X2)

SPEAKER

BASS SPEAKER OUT JACK

(X2)

[AV-21V531/B]

TWIN PORT BASS BLASTER UNIT [AV-21V531/B]

(X9)

1-8 (No. 52176)

B (X4)

3.2 REPLACEMENT OF MEMORY IC

3.2.1 MEMORY IC

This TV uses the following memory IC.

Memory IC: IC1702 on MAIN PW Board

The memory IC memorizes data for correctly operating the video and deflection circuits. When replacing the memory IC, be sure to use the same type IC written with the initial values of data. In other words, use the specific IC listed in “PRINTED WIRING BOARD PARTS LIST”. For its mounting location, refer to “ADJUSTMENT LOCATIONS”.

3.2.2 PROCEDURE FOR REPLACING MEMORY IC

1. Power off

Switch the power off and unplug the power cord from the wall outlet.

2. Replacing the memory IC

Replace the memory IC with new one. Be sure to use the memory IC written with the initial data values.

3. Power on

Plug the power cord into the wall outlet and switch the power on.

4. Check and setting of SYSTEM CONSTANT SET:

(1) Press the [DISPLAY] key and the [PICTURE MODE]

key on the remote control unit simultaneously. The SERVICE MENU screen will be displayed.(See Fig.1.)

(2) In the SERVICE MENU, press the [DISPLAY] key and

[PICTURE MODE] key simultaneously. Then, the SYSTEM CONSTANT SET screen will be displayed.(See Fig.2.)

(3) Check whether the setting values of the SYSTEM

CONSTANT SET are the same as those indicated in Table1. If the value is different, select the setting item with the MENU [ the MENU

!]/["] key, and set the correct value with

[#]/[$] key.

(4) Press the [DISPLAY] key twice to return to the normal

screen.

5. Receive channel setting

Refer to the OPERATING INSTRUCTIONS and set the receive channels (channels preset).

6. User setting

Check the user setting values in Table 2 and Table 3. If setting value is different, set the correct value. For setting, refer to the OPERATING INSTRUCTIONS.

7. Setting of SERVICE MENU

Verify the setting for each setting item in the SERVICE MENU.(See Table 4.) If readjustment is necessary, perform adjustment referring to “ADJUSTMENTS PROCEDURE”.

NAME OF REMOTE CONTROL KEYS

SERVICE MENU

1. IF

3. DEF

5. PRESET

7. PLUG & PLAY (ON)

1-7 : SELECT DISPLAY : EXIT

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

[AV-21V511/B, AV-21V531/B]

1. IF

3. DEF

5. PRESET

6. PLUG & PLAY (ON)

1-6 : SELECT DISPLAY : EXIT

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

2. VC

4. VSM PRESET

6. A2NICAM

SERVICE MENU

2. VC

4. VSM PRESET

[AV-21V311/B]

Fig. 1

SYSTEM CONSTANT-

SYSTEM CONSTANT SET 1

SYSTEM COMB TILT SUPER BASS TEXT LANGUAGE

: SEL -+ : OPE

SYSTEM CONSTANT-

SYSTEM CONSTANT SET 2

MSP BILINGUAL B / B SOUND TUNER COLOUR AUTO

: SEL -+ : OPE

SYSTEM CONSTANT-

SYSTEM CONSTANT SET 3

LOCK 1 MHz

500 KHz 250 KHz

156. 25 KHz

31.25 KHz

DISP : EXIT

MULTI NO NO NO NO E/T

YES NO NO MU NO

: 040 : 040 : 040 : 030 : 030

DISPLAY

PICTURE MODE

: SEL -+ : OPE

SYSTEM CONSTANT-

SYSTEM CONSTANT SET 4

3D SURROUND

: SEL -+ : OPE

Fig. 2

DISP : EXIT

YES

NOAMP TUNER

YESCOMPONENT

NOPIP

YES16 : 9

ONM.L. delete

DISP : EXIT

(No. 52176) 1-9

3.2.3 FACTORY SETTING VALUE

!SETTING OF SYSTEM CONSTANT SET

Setting item Setting content

Setting value

AV-21V311/B AV-21V511/B AV-21V531/B

SYSTEM SINGLE MULTI ←

COMB NO ←←

TILT NO ←←

SUPER BASS NO ← YES

TEXT NO ←←

LANGUAGE E/T ←←

MSP NO YES ←

BILINGUAL YES NO ←

B/B SOUND NO ←←

TUNER MU ←←

COLOUR AUTO NO ←←

LOCK 1MHz 040 ←←

500KHz 040 ←←

250KHz 040 ←←

MULTI TRIPLE PAL SINGLE

YES NO

ERCMI ERAPU NO

E/T E/V E

YES NO

MU MA

YES NO

000 240

VIET

156.25KHz 030 ←←

31.25KHz 030 ←←

3D SURROUND YES ←←

AMP TUNER NO ←←

COMPONENT YES ←←

PIP NO ←←

16 : 9 YES ←←

M.L. delete ON ←←

000 240

YES NO

ON OFF

Table 1

1-10 (No. 52176)

!SETTING OF SWITCHES ON FRONT PANEL AND REMOTE CONTROL UNIT

Setting item Setting value

POWER Off

SUB POWER On

VOLUME 15

COLOR SYSTEM PAL

SOUND SYSTEM B/G

PICTURE MODE (VSM) BRIGHT

CINEMA SURROUND OFF

SUPER BASS ON [AV-21V531/B]

OFF TIMER 00

BILINGUAL MODE Ι (Ι/ΙΙ) [AV-21V311/B]

STEREO MODE STEREO [AV-21V511/B, AV-21V531/B]

CHANNEL POSITION PRESET 1

Table 2

!SETTING OF MENU SCREEN

Setting item Setting value

INPUT TV

VNR OFF

COMPRESS (16:9) OFF

AUTO SHUTOFF OFF

CHILD LOCK OFF

BLUE BACK ON

VIDEO-2 SET VIDEO

AUTO CH PRESET Refer to OPERATING INSTRUCTIONS

MANUAL CH PRESET Refer to OPERATING INSTRUCTIONS

LANGUAGE THAI

TINT Center

COLOUR Center

BRIGHT Center

CONT Maximum

SHARP Center

BASS Center

TREBLE Center

BALANCE Center

AI VOLUME ON

FAVORITE CH RED PR1

FAVORITE CH GREEN PR1

FAVORITE CH YELLOW PR1

FAVORITE CH BLUE PR1

AI ECO SENSOR OFF

AI ECO DISPLAY OFF

Table 3

(No. 52176) 1-11

!SERVICE MENU SETTING ITEMS

Service menu Setting item

1. IF 1. VCO

2. DELAY POINT

2. VC 1. CUTOFF(R/G)

2. DRIVE(R/G/B)

3. BRIGHT

4. CONT

5. COLOUR

6. TINT

7. SHARP

8. YDELAY [Do not adjust]

AMP T. SHARP

3. DEF 1. VER. SLOPE

2. VER. HEIGHT

3. VER. POSITION

4. VER. SCURVE

5. HOR. POSITION

6. HOR. WIDTH

7. EW-PIN

8. EW-TRAPEZ

9. UP CORNER

10. DW CORNER

11. HOR. PARALL

12. HOR. BOW

13. V. ZOOM

4. VSM PRESET 1. TINT

(BRIGHT/STANDARD/SOFT)

[Do not adjust] 3. BRIGHT

2. COLOUR

4. CONTRAST

5. SHARP

Service menu Setting item

5. PRESET 1. PSNS

[Do not adjust] 2. ACL

3. MUS

4. MAT

5. FCO

6. BPS

7. IFLH

8. VID

9. STM

10. AFCW

11. VSW

12. FFI

13. AGC

14. CL

15. AKB

16. HBL

17. BKS

18. READ STATUS

19. VNR

20. PEAK

21. IVG

22. WPL

23. SOFT CLIPPER

24. IF PLL OFFSET

25. OVERSHOOT

26. HCO

27. HP2

28. AI VOLUME ADN

29. SUB BASS

30. SUB TREBLE

31. SUB TRIMMER

32. CCCLOOP

33. OSD BRIGHTNESS

1-12 (No. 52176)

Table 4

6. A2NICAM 1. ERROR LIMIT

[AV-21V511/B, AV-21V531/B]

[Do not adjust] 3. SOUND SYSTEM

6/7.

PLUG & PLAY(ON)

[Do not adjust]

2. A2 ID THR

3. 3 REPLACEMENT OF CHIP COMPONENT

3.3.1 CAUTIONS

(1) Avoid heating for more than 3 seconds. (2) Do not rub the electrodes and the resist parts of the pattern. (3) When removing a chip part, melt the solder adequately. (4) Do not reuse a chip part after removing it.

3. 3.2 SOLDERING IRON

(1) Use a high insulation soldering iron with a thin pointed end of it. (2) A 30w soldering iron is recommended for easily removing parts.

3. 3.3 REPLACEMENT STEPS

1. How to remove Chip parts

[Resistors, capacitors, etc.]

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

alternately melt the solder at each end.

(2) Shift with tweezers and remove the chip part.

2. How to install Chip parts

[Resistors, capacitors, 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. Then heat and melt the solder at both ends of the chip part.

[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. Shift and remove the chip part.

Note :

After removing the part, remove remaining solder from the pattern.

[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.

(No. 52176) 1-13

SECTION 4

ADJUSTMENT

4.1 ADJUSTMENT PREPARATION

(1) You can make the necessary adjustments for this unit with either the remote control unit or with the adjustment

equipment 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 which set the screen to 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 the set and test equipment before use, 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 variable resistors, transformers, trimmer

capacitors, etc. (7) Presetting before adjustment.

Unless otherwise specified in the adjustment instructions, preset the following functions with the remote control unit.

!User mode setting position

Setting item Setting value

PICTURE MODE (VSM) BRIGHT

TINT, COLOUR, BRIGHT,SHARP Center

CONT Maximum

VNR OFF

AI ECO SENSOR OFF

BASS, TREBLE, BALANCE Center

4.2 MEASURING INSTRUMENT AND FIXTURES

(1) DC voltmeter (or Digital voltmeter) (2) Oscilloscope (3) Signal generator (Pattern generator) [PAL/SECAM/NTSC] (4) Remote control unit

4.3 ADJUSTMENT ITEMS

! B1 POWER SUPPLY

! FOCUS ADJUSTMENT

! IF CIRCUIT ADJUSTMENTS

• IF VCO adjustment

• DELAY POINT (AGC TAKE-OVER) adjustment

! VIDEO CIRCUIT ADJUSTMENTS

• WHITE BALANCE (Low light) adjustment

• WHITE BALANCE (High light) adjustment

• SUB BRIGHT adjustment

• SUB CONTRAST adjustment

• SUB COLOUR Ι adjustment

• SUB COLOUR ΙΙ adjustment

• SUB TINT Ι adjustment

• SUB TINT ΙΙ adjustment

! DEFLECTION CIRCUIT ADJUSTMENTS

• V.SLOPE adjustment

• V.POSITION adjustment

• V.HEIGHT adjustment

• H.POSITION adjustment

• V.S-CURVE adjustment

• H.BOW adjustment

! VSM PRESET SETTING ! PRESET SETTING ! A2NICAM SETTEING

[AV-21V511/B, AV-21V531/B]

! PURITY AND CONVERGENCE

• PURITY ADJUSTMENT

• STATIC CONVERGENCE ADJUSTMENT

• DYNAMIC CONVERGENCE ADJUSTMENT

1-14 (No. 52176)

4.4 ADJUSTMENT LOCATIONS

MAIN PWB ASS'Y

POWER SW

S901

DEG

IC702

S783 S781

S784 S782 S780

IC701

J773

J772 J771

GND B1

J770

CN001

S780 : MENU S781 : CH– S782 : CH+ S783 : VOL– S784 : VOL+

FRONT

HVT

J774

J802 J803

J804J801

TU001

MAIN PWB ASS'Y (CRT SOCKET)

TP-47G

TP-E

UPPER : FOCUS

LOWER : SCREEN

(SOLDER SIDE)

TOP

CRT EARTH

(BRAIDED ASS'Y)

(No. 52176) 1-15

4.5 BASIC OPERATION IN SERVICE MENU

4.5.1 TOOL OF SERVICE MENU OPERATION

Operate the SERVICE MENU with the remote control unit.

4.5.2 SERVICE MENU ITEMS

With the SERVICE MENU,various settings (adjustments) can be made,and they are broadly classified in the following items of settings:

1. IF For entering/adjusting the setting values (adjustment values) of the IF circuit.

2. VC For entering/adjusting the setting values (adjustment values) of the VIDEO circuit.

3. DEF For entering/adjusting the setting values (adjustment values) of the DEFLECTION circuit.

4. VSM PRESET For setting the values of STANDARD,SOFT and BRIGHT.

5. PRESET For setting the values of the preset.

6. A2NICAM For entering/adjusting the setting values (adjustment values) of the multi-sound circuit. [AV-21V511/B, AV-21V531/B]

PLUG & PLAY (ON)

6/7.

4.5.3 BASIC OPERATION IN SERVICE MENU

1. HOW TO ENTER SERVICE MENU

Press the [DISPLAY] key and the [PICTURE MODE] key on the remote control unit simultaneously. The SERVICE MENU screen will be displayed. (See Fig. 1 on the next page.)

2. SELECTION OF SUB MENU SCREEN

Press one of the keys 1 to 6 on the remote control unit,and select the SUB MENU SCREEN from the SERVICE MENU. (See Fig.1 on the next page.)

(VSM:video status memory)

This is not used for service.

SERVICE MENU

1. IF

2. VC

3. DEF

4. VSM PRESET

5. PRESET

6. A2NICAM [AV-21V511/B, AV-21V531/B] 6/7. PLUG & PLAY (ON)

3. METHOD OF SETTING

NOTES:

→ SUB MENU

• Once the setting values are set, they are memorized automatically.

• It must not adjust without inputting a signal.

(1) 1. IF

[1.VCO ] : Under normal conditions, no adjustment is required.

(a) [1] key Select 1. IF. (b) [1] key Select 1. VCO. (c) [DISPLAY] key When this is pressed twice, you will return to the SERVICE MENU.

[2.DELAY POINT ]

(a) [1] key Select 1. IF. (b) [2] key Select 2. DELAY POINT. (c)

MENU [!]/["] key

(d) [DISPLAY] key When this is pressed twice, you will return to the SERVICE MENU.

(2) 2. VC, 3. DEF, 4. VSM PRESET, 5. PRESET and 6. A2NICAM

(a) [2] ~[6] keys Select one from 2. VC, 3. DEF, 4. VSM PRESET, 5. PRESET and 6. A2NICAM. (b)

MENU [#]/[$] key

(c)

MENU [!]/["] key

(d) [DISPLAY] key When this is pressed, you will return to the SERVICE MENU.

Adjust the setting value.

Select setting items. Adjust the setting values of the setting items.

Use the number keys on the remote control unit for setting of WHITE BALANCE. For the setting, refer to each item concerned.

(3) 6/7. PLUG & PLAY (ON)

This is not used for service.

4. Release of SERVICE MENU

After completing the setting, return to the SERVICE MENU by pressing the [DISPLAY] key, then again press the [DISPLAY] key to return to the normal screen.

1-16 (No. 52176)

4.5.4 SERVICE MENU FLOW CHART

SERVICE MENU

1. IF

3. DEF

5. PRESET

7. PLUG & PLAY (ON)

1-7 : SELECT DISPLAY : EXIT

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

2. VC

4. VSM PRESET

6. A2NICAM

[AV-21V511/B, AV-21V531/B]

SERVICE MENU

1. IF

3. DEF

5. PRESET

6. PLUG & PLAY (ON)

1-6 : SELECT DISPLAY : EXIT

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

2. VC

4. VSM PRESET

[AV-21V311/B]

SUB MENU 1. IF

1. VCO

2. DELAY POINT

1-2 : SELECT DISPLAY : EXIT

SUB MENU 2. VC

V/C

AUTO

(R)

(G)



: SELECT

/+ : OPERATE

** **

DISPLAY : EXIT

50 Hz

1. CUTOFF



Setting item

1. CUTOFF (R/G)

2. DRIVE (R/G/B)

3. BRIGHT

4. CONT

5. COLOUR

6. TINT

7. SHARP

8. YDELAY

9. AMP T.SHARP

VCO (CW)

TOO HIGH ABOVE REFERENCE BELOW REFERENCE TOO LOW

DELAY POINT UHF

AGC TAKE-OVER

/+ : OPERATE

MHz

*****

DISPLAY : EXIT

SUB MENU 6. A2NICAM

[AV-21V511/B, AV-21V531/B]

1. ERROR LIMIT C AD BITS NICOM ERROR



: SELECT



/+ : OPERATE

*****

****

******

****

DISPLAY : EXIT

Setting item

1. ERROR LIMIT

2. A2. ID THR

3. SOUND SYSTEM

SUB MENU 5. PRESET

PRESET 50Hz

1. PSNS





/+ : OPERATE

: SELECT

PALB/G

DISPLAY : EXIT

SUB MENU 3. DEF

4 : 3 / 16 : 9

MHzA2NICAM

DEF 4 : 3

1. VER. SLOPE

50Hz





: SELECT

/+ : OPERATE

PAL

DISPLAY : EXIT

1. VER. SLOPE

2. VER. HEIGHT

3. VER. POSITION

4. VER. SCURVE

5. HOR. POSITION

6. HOR. WIDTH

Setting item

7. EW-PIN

8. EW-TRAPEZ

9. UP CORNER

10. DW CORNER

11. HOR. PARALL

12. HOR. BOW

13. V. ZOOM

SUB MENU 4. VSM PRESET

BRIGHT / STANDARD / SOFT

Setting item

TINT COLOUR BRIGHT

CONTRAST

SHARP

30. SUB TREBLE

31. SUB TRIMMER

32. CCCLOOP

33. OSD BRIGHTNESS

1. PSNS

2. ACL

3. MUS

4. MAT

5. FCO

6. BPS

7. IFLH

8. VID

9. STM

STANDARD

TINT

COLOUR

BRIGHT

CONTRAST

SHARP



: SELECT



/+ : OPERATE

10. AFCW

11. VSW

12. FFI

13. AGC

14. CL

15. AKB

16. HBL

17. BKS

18. READ STATUS

19. VNR

** ** ** ** **

DISPLAY : EXIT

Setting item

20. PEAK

21. IVG

22. WPL

23. SOFT CLIPPER

24. IF PLL OFFSET

25. OVERSHOOT

26. HCO

27. HP2

28. AI VOLUME ADN

29. SUB BASS

Fig. 1

(No. 52176) 1-17

4.6 ADJUSTMENT PROCEDURE

4.6.1 B1 POWER SUPPLY

Item

Measuring instrument

Test point Adjustment part Description

B1 POWER SUPPLY

Signal generator

check

DC voltmeter

4.6.2 FOCUS ADJUSTMENT

Item

FOCUS adjustment

Measuring instrument

Signal generator

B1 (pin 1) GND (pin 5) [CN00S connector

(1) Receive a black and white signal. (2) Connect a DC voltmeter between B1 and GND (between

pins 1 and 5 of the connector CN00S).

(3) Make sure that the voltage is DC135V ± 2V.

in MAIN PWB]

Test point Adjustment part Description

FOCUS VR [In HVT]

Notes:

• Set PICTURE MODE (VSM) to “BRIGHT”.

• The final adjustment of CONVERGENCE must be done

after the FOCUS adjustment. (CONVERGENCE is changed by FOCUS adjustment.) When makes difference by FOCUS adjustment, should be reconfirming PURITY adjustment.

(1) Receive a cross-hatch signal. (2) While looking at the screen centre, adjust the FOCUS VR

so that the vertical and horizontal lines will be clear and in fine detail.

(3) Make sure that the picture is in focus even when the screen

gets darkened.

4.6.3 IF CIRCUIT ADJUSTMENTS

Item

IF VCO adjustment

DELAY POINT (AGC

Measuring instrument

Remote control unit

VCO (CW)

TOO HIGH ABOVE REFERENCE BELOW REFERENCE TOO LOW

Remote control unit

Test point Adjustment part Description

. MHz

DISPLAY : EXIT

TAKE-OVER) adjustment

Adjustment item

NTSC 3.58 OTHERS

2. DELAY POINT

(AGC TAKE-OVER)

[1. IF]

1. VCO (CW)

Receiving frequency

YELLOW

[1. IF]

2. DELAY POINT

Initial setting value

VHF UHF VHF UHF

282828

Note:

• Under normal conditions, no adjustment is required.

(1) Select 1. IF from the SERVICE MENU. (2) Select 1. VCO. (3) Receive a broadcast signal. (4) Check the characters colour of the BELOW REFERENCE

displayed to yellow.

(5) Press the [DISPLAY] key three times to return to normal

screen.

(1) Receive a black and white broadcast signal (colour off). (2) Select 1. IF from the SERVICE MENU. (3) Select 2. DELAY POINT. (4) Adjust in order to eliminate any noise or beat from the

image. Any increase above the initial value produces noise and any decrease below it produces beat.

(5) Press the [DISPLAY] key three times to return to the normal

screen.

(6) Turn to other channels and make sure that there are no

irregularities.

1-18 (No. 52176)

4.6.4 VIDEO CIRCUIT ADJUSTMENTS

• 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 (adjustment) items not listed in “ADJUSTMENT PROCEDURE”.

Note :

AV-21V311/B don’t have the NTSC system on TV mode.

[SUB MENU 2. VC]

Adjustment item

Variable range

PAL SECAM NTSC3.58 NTSC4.43

1. CUT OFF (R/G) -32 – +31 0/0 ←← ← ←

2. DRIVE (R/G/B) -32 – +31 0/0/0 ←← ← ←

3. BRIGHT (TV/V-1/V-2/V-3) -32 – +31

-18/0/0/+1

4. CONT -32 – +31 -20 ←← ← –

5. COLOUR -32 – +31 -5 -3 -12 -2 –1

6. TINT (TV/VIDEO) -32 – +31 – – -15/+2 +1/+1 –

7. SHARP (TV/VIDEO) [Do not adjust] -32 – +31 -10/0 ←← ← –/0

Y DELAY (TV/VIDEO/S-VIDEO) [Do not adjust]

-8 – +7 -7/0/0 -2/0/0 -7/0/0 -2/0/0 –

9. AMP T. SHARP [Do not adjust] -32 – +31 0

Initial setting value

COMPONENT(V-2)

←← ←– / – /0/ –

←← ← ←

Item

WHITE BALANCE (Low light) adjustment

H.LINE OFF

H.LINE ON

R CUTOFF(

Measuring instrument

Test point Adjustment part Description

Signal generator

Remote control unit

REMOTE CONTROL UNIT

12 3



)

1. CUTOFF

50 Hz



: SELECT



/+ : OPERATE

V/C

(R)

(G)

[2. VC]

1. CUTOFF (R)

1. CUTOFF (G)

SCREEN VR [In HVT]

PAL

** **

DISPLAY : EXIT

G CUTOFF ( )

Note:

• Set PICTURE MODE (VSM) to “BRIGHT”.

(1) Receive a PAL black and white signal (colour off). (2) Select 2. VC from the SERVICE MENU. (3) Select 1. CUTOFF (R) and (G), and set each value to initial

setting value with the [4] and [7] keys, or [5] and [8] keys. (4) Press the [1] key to produce a single horizontal line. (5) Turn the SCREEN VR fully counterclockwise, then slowly

turn it clockwise to where a red, blue or green colour is

faintly visible. (6) Use the [4] and [7] or [5] and [8] keys and adjust the other

2 colours to where the single horizontal line appears

white. (7) Turn the SCREEN VR to where the single horizontal line

glows faintly. (8) Press the [2] key to return to 1. CUTOFF screen. (9) Press the [DISPLAY] key twice to return to the normal

screen.

Adjustment Item

1. CUT OFF

R –32 –– +31 0

G –32 –– +31 0

Variable Initial setting

range value

R CUTOFF (



789

)

G CUTOFF (



)

(No. 52176) 1-19

Item

Measuring instrument

Test point Adjustment part Description

WHITE BALANCE (High light) adjustment

R DRIVE (

Signal generator

[2. VC]

2.DRIVE (R)

2. DRIVE (G)

Remote

2.DRIVE (B)

control unit

V/C

2. DRIVE

50 Hz

REMOTE CONTROL UNIT

) B DRIVE ()





)

(R)

(G) (B)



: SELECT



/+ : OPERATE

12 3

789

PAL

** ** **

DISPLAY : EXIT

G DRIVE ()

B DRIVE (

G DRIVE (



Notes:

• Proceed to the following adjustment after having completed

the WHITE BALANCE (Low light) adjustment.

• Set PICTURE MODE (VSM) to “BRIGHT”.

(1) Receive a PAL black and white signal (colour off). (2) Select 2. VC from the SERVICE MENU. (3) Select 2. DRIVE (R), (G) and (B), and set each value to

initial setting value with the [4] to [9] keys. (4) Use the [4] to [9] keys to produce a white screen. (5) Press the [DISPLAY] key twice to return to the normal

screen.

Adjustment Item

R –32 –– +31 0

2. DRIVE G –32 –– +31 0

B –32 –– +31 0

)

Variable Initial setting

range value

SUB BRIGHT adjustment

SUB CONTRAST adjustment

Remote control unit

[2. VC]

3. BRIGHT

[2. VC]

4. CONT

Notes:

• Proceed to the following adjustment after having completed

the WHITE BALANCE (Low light) and WHITE BALANCE (High light) adjustment.

• Set PICTURE MODE (VSM) to “BRIGHT”.

(1) Receive a broadcast. (2) Select 2. VC from the SERVICE MENU. (3) Select 3. BRIGHT. (4) Set the initial setting value. (5) If the brightness is not best with the initial setting value,

make fine adjustment until you get the best brightness. (6) Press the [DISPLAY] key twice to return to the normal

screen.

Notes:

• Proceed to the following adjustment after having completed

the SUB BRIGHT adjustment.

• Set PICTURE MODE (VSM) to “BRIGHT”.

(1) Receive a broadcast. (2) Select 2. VC from the SERVICE MENU. (3) Select 4. CONT. (4) Set the initial setting value. (5) If the contrast is not best with the initial setting value,

make fine adjustment until you get the best contrast. (6) Press the [DISPLAY] key twice to return to the normal

screen.

1-20 (No. 52176)

Item

Measuring instrument

Test point Adjustment part Description

SUB COLOUR Ι adjustment

SUB COLOUR ΙΙ adjustment

)

[2. VC]

5. COLOUR

[2. VC]

5. COLOUR

Remote control unit

Signal generator

TP-47G TP-E ( [CRT

Oscilloscope

SOCKET

PWB] Remote control unit

(A)

(–) 0V (+)

AV-21V531/B

(VW-G)

AV-21V311/B AV-21V511/B

PAL +14V +17V

SECAM +2V +6V

NTSC +2V +5V

[Method of adjustment without measuring instrument] Notes:

• Proceed to the following adjustment after having completed

the SUB CONTRAST adjustment.

• Set PICTURE MODE (VSM) to “BRIGHT”.

– PAL COLOUR –

(1) Receive a PAL broadcast. (2) Select 2. VC from the SERVICE MENU. (3) Select 5. COLOUR. (4) Set the initial setting value for PAL COLOUR. (5) If the colour is not best with the initial setting value, make

fine adjustment until you get the best colour.

(6) Press the [DISPLAY] key twice to return to the normal

screen.

– SECAM COLOUR –

(1) Receive a SECAM broadcast. (2) Press the [COLOUR SYSTEM] key to select the SECAM

colour system.

(3) Make fine adjustment of SECAM COLOUR in the same

way as for “PAL COLOUR”.

– NTSC 3.58 COLOUR –

(1) Receive a NTSC 3.58MHz broadcast. (2) Press the [COLOUR SYSTEM] key to select the NTSC

3.58 colour system.

(3) Make similar fine adjustment of NTSC 3.58 COLOUR in

the same way as for “PAL COLOUR”.

– NTSC 4.43 COLOUR –

When adjustment is done for NTSC 3.58 COLOUR, appropriate values are automatically set for NTSC 4.43 COLOUR.

[Method of adjustment using measuring instrument] Notes:

• Proceed to the following adjustment after having completed

the SUB CONTRAST adjustment.

• Set PICTURE MODE (VSM) to “BRIGHT”.

– PAL COLOUR –

(1) Receive a PAL colour bar signal (full field colour bar 75%

white). (2) Select 2. VC from the SERVICE MENU. (3) Select 5. COLOUR. (4) Set the initial setting value of PAL COLOUR. (5) Connect the oscilloscope between TP-47G and TP-E. (6) Adjust PAL COLOUR to set the value (A) in the figure to

W-G) shown in the table.

– SECAM COLOUR –

(1) Receive a SECAM colour bar signal (full field colour bar

75% white). (2) Press the [COLOUR SYSTEM] key to select the SECAM

colour system. (3) Set the initial setting value of SECAM COLOUR. (4) Adjust SECAM COLOUR to set the value (A) in the figure

to (V

W-G) shown in the table.

– NTSC 3.58 COLOUR –

(1) Receive a NTSC 3.58 colour bar signal (full field colour

bar 75% white). (2) Press the [COLOUR SYSTEM] key to select the NTSC

3.58 colour system. (3) Set the initial setting value of NTSC 3.58 COLOUR. (4) Adjust NTSC 3.58 COLOUR to set the value (A) in the

figure to (V

– NTSC 4.43 COLOUR –

When adjustment is done for NTSC 3.58 COLOUR, appropriate values are automatically set for NTSC 4.43 COLOUR.

W-G) shown in the table.

(No. 52176) 1-21

Item

Measuring instrument

Test point Adjustment part Description

SUB TINT Ι adjustment

Signal generator

Remote control unit

[2. VC]

6. TINT

[Method of adjustment without measuring instrument]

Notes:

• Proceed to the following adjustment after having completed

the SUB CONTRAST adjustment.

• Set PICTURE MODE (VSM) to “BRIGHT”.

– NTSC 3.58 TINT –

(1) Receive a NTSC 3.58 colour bar signal (full field colour

bar 75% white).

(2) Press the [COLOUR SYSTEM] key to select the NTSC

3.58 colour system. (3) Select 2. VC from the SERVICE MENU. (4) Select 6. TINT. (5) Set the initial setting value of NTSC 3.58. (6) If you cannot get the best tint with the initial setting value,

make fine adjustment until you get the best tint.

(7) Press the [DISPLAY] key twice to return to the normal

screen.

– NTSC 4.43 TINT –

When adjustment is done for NTSC 3.58 TINT, appropriate values are automatically set for NTSC 4.43 TINT.

SUB TINT ΙΙ adjustment

Signal generator

TP-47G TP-E (

[2. VC]

6. TINT

)

[CRT

Oscilloscope

SOCKET

PWB] Remote control unit

(–) 0V (+)

AV-21V531/B

(VW-C)

(B)

AV-21V311/B AV-21V511/B

NTSC +2V +6V

[Method of adjustment using measuring instrument]

Notes:

• Proceed to the following adjustment after having completed

the SUB CONTRAST adjustment.

• Set PICTURE MODE (VSM) to “BRIGHT”.

– NTSC 3.58 TINT –

(1) Receive a NTSC 3.58 colour bar signal (full field colour

bar 75% white).

(2) Press the [COLOUR SYSTEM] key to select the NTSC

3.58 colour system. (3) Select 2. VC from the SERVICE MENU. (4) Select 6. TINT. (5) Set the initial setting value of NTSC 3.58. (6) Connect the oscilloscope between TP-47G and TP-E. (7) Adjust NTSC 3.58 TINT to set the value (B) in the figure to

W-C) shown in the table.

(8) Press the [DISPLAY] key twice to return to the normal

screen.

– NTSC 4.43 TINT –

When adjustment is done for NTSC 3.58 TINT, appropriate values are automatically set for NTSC 4.43 TINT.

1-22 (No. 52176)

4.6.5 DEFLECTION CIRCUIT ADJUSTMENTS

• 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.

• When performing deflection circuit adjustment, adjusts PAL signal (fv: 50 Hz) in 4:3 mode and 16:9 mode respectively, and

adjust the NTSC signal (fv: 60 Hz) similarly.

Note:

Proceed to the following adjustment after having completed the adjustments of SUB BRIGHT and SUB PICTURE.

!SUB MENU 3. DEF

Initial setting value

Variable range

50Hz

4:3

60Hz

1. VER. SLOPE –32 –– +31 +2 – 0 +2 – 0 ––

2. VER. HEIGHT –32 –– +31 0 0 +31 +31 ––

3. VER. POSITION –32 –– +31 +2 +1 +2 –2 ––

4. VER. SCURVE –32 –– +31 –8 –6 – 8 +2 ––

5. HOR. POSITION –32 –– +31 +2 +6 +2 +6 +7

6. HOR. WIDTH –32 –– +31 –0 –0 –0 –0 ––

7. EW-PIN –32 –– +31 –0 –0 –0 – 0 ––

8. EW-TRAPEZ –32 –– +31 –0 –0 –0 –0 ––

9. UP CORNER –32 –– +31 – 0 –0 –0 –0 ––

10. DW CORNER –32 –– +31 –0 –0 –0 –0 ––

11. HOR. PARALL –32 –– +31 –0 –0 –7 –0 ––

12. HOR. BOW –32 –– +31 –0 –0 –0 –0 ––

13. V.ZOOM –32 –– +31 0 0 –25 –2 5 ––

COMPRESS (16:9)Adjustment item

50Hz

60Hz

COMPONENT

(50Hz)

!COMPRESS : OFF (4:3), fv: 50Hz/60Hz mode

Item

V. SLOPE adjustment

Measuring instrument

Signal generator

Test point Adjustment part Description

[3. DEF]

1. VER. SLOPE

Remote control unit

V. POSITION adjustment

Signal generator

[3. DEF]

3. VER. POSITION

Remote control unit

Blanking line

– PAL V. SLOPE –

(1) Receive a PAL circle pattern signal of vertical frequency

50Hz. (2) Select 3. DEF from the SERVICE MENU. (3) Select 1. VER. SLOPE. (4) Set the initial setting value of 1. VER. SLOPE. (5) Adjust 1. VER. SLOPE to make “A = B”. (6) Press the [DISPLAY] key to refurn to SERVICE MENU

screen.

– NTSC V. SLOPE –

(1) Receive a NTSC circle pattern signal of vertical frequency

60Hz. (2) Make similar adjustment of NTSC V. SLOPE in the same

way as for

“PAL V. SLOPE”.

– PAL V. POSITION –

(1) Receive a PAL circle pattern signal of vertical frequency

50Hz. (2) Select 3. VER. POSITION. (3) Set the initial setting value of 3. VER. POSITION. (4) Adjust 3. VER. POSITION to make “A = B”.

– NTSC V. POSITION –

(1) Receive a NTSC circle pattern signal of vertical frequency

60Hz. (2) Make similar adjustment of NTSC V. POSITION in the

same way as for “PAL V. POSITION”.

(No. 52176) 1-23

Item

Measuring instrument

Test point Adjustment part Description

V. HEIGHT adjustment

Screen

size

91%

H. POSITION adjustment

Signal generator

[3. DEF]

2. VER. HEIGHT

13. V. ZOOM Remote control unit

Picture size 100%

Signal generator

[3. DEF]

5. HOR. POSITION

Remote control unit

– PAL V. HEIGHT –

(1) Receive a PAL cross-hatch signal. (2) Select 2. VER. HEIGHT. (3) Set the initial setting value of 2. VER. HEIGHT. (4) Select 13. V. ZOOM. (5) Set the initial setting value of 13. V. ZOOM. (6) Adjust 13. V. ZOOM and make the vertical screen size

91% of the picture size.

– NTSC V. HEIGHT –

(1) Receive a NTSC cross-hatch signal. (2) Make similar adjustment of NTSC V. HEIGHT in the same

way as for “PAL V. HEIGHT”.

– PAL H. POSITION –

(1) Receive a PAL circle pattern signal. (2) Select 5. HOR. POSITION. (3) Set the initial setting value of 5. HOR. POSITION. (4) Adjust 5. HOR. POSITION to make “C = D”.

– NTSC H. POSITION –

(1) Receive a NTSC circle pattern signal. (2) Make similar adjustment of NTSC H. POSITION in the

same way as for “PAL H. POSITION”.

V.S-CURVE adjustment

1-24 (No. 52176)

Signal generator

Remote control unit

[3. DEF]

4. VER. SCURVE

TOP

CENTRE

BOTTOM

– PAL V. S-CURVE –

(1) Receive a PAL cross-hatch signal. (2) Select 4. VER. SCURVE. (3) Set the initial setting value of 4. VER. SCURVE. (4) Adjust 4. VER. SCURVE so that the spaces of each line on

TOP, CENTRE and BOTTOM become uniform.

– NTSC V. S-CURVE –

(1) Receive a NTSC cross-hatch signal. (2) Make similar adjustment of NTSC V. S-CURVE in the

same way as for “PAL V. S-CURVE”.

Item

Measuring instrument

Test point Adjustment part Description

H. BOW adjustment

Signal generator

Remote control unit

Straight

[3.DEF]

12. HOR. BOW

– PAL H. BOW –

(1) Receive a PAL cross-hatch signal. (2) Select 12. HOR. BOW. (3) Set the initial setting value of 12. HOR. BOW. (4) Adjust 12. HOR. BOW to optimize the horizontal arc

distortion.

– NTSC H. BOW –

(1) Receive a NTSC cross-hatch signal. (2) Make similar adjustment of NTSC H. BOW in the same

way as for “PAL H. BOW”.

(3) Press the [DISPLAY] key twice to return to the normal

screen.

(No. 52176) 1-25

!COMPRESS : ON (16:9), fv: 50Hz/60Hz mode

Item

Measuring instrument

Test point Adjustment part Description

V. HEIGHT adjustment

Screen

size

Signal generator

Remote control unit

Screen size

[3.DEF]

13. V. ZOOM

2. VER. HEIGHT

Vertical amplitude

– PAL V. HEIGHT –

(1) Receive a PAL cross-hatch signal of vertical frequency

50Hz.

(2) Select COMPRESS from the MENU and set COMPRESS

to ON. (3) Select 3. DEF from the SERVICE MENU. (4) Set the initial setting value of 13. V. ZOOM. (5) Select 2. VER. HEIGHT. (6) Set the initial setting value of 2. VER. HEIGHT. (7) Adjust 2. VER. HEIGHT to set the vertical amplitude of the

image to 235mm.

– NTSC V. HEIGHT –

(1) Receive a NTSC cross-hatch signal of vertical frequency

60Hz. (2) Make similar adjustment of NTSC V. HEIGHT in the same

way as for “PAL V. HEIGHT”.

V. SLOPE adjustment

Signal generator

Remote control unit

[3.DEF]

1. VER. SLOPE

– PAL V. SLOPE –

(1) Receive a PAL circle pattern signal of vertical frequency

screen.

– NTSC V. SLOPE –

(1) Receive a NTSC circle pattern signal of vertical frequency

Blanking

line

60Hz. (2) Make similar adjustment of NTSC V. SLOPE in the same

way as for “PAL V. SLOPE”. (3) Press the [DISPLAY] key twice to return to the normal

screen.

1-26 (No. 52176)

!VIDEO - 2 SET : COMPONENT, fv: 50/60Hz mode

Item

Measuring instrument

Test point Adjustment part Description

H. POSITION adjustment

Signal generator

[3. DEF]

5. HOR. POSITION

Remote control unit

(1) Receive a PAL circle pattern signal to VIDEO-2 terminal. (2) Select VIDEO-2 SET from the MENU and set VIDEO-2

SET to COMPONENT. (3) Select 3. DEF from the SERVICE MENU. (4) Select 5. HOR. POSITION. (5) Set the initial setting value of 5. HOR. POSITION. (6) Adjust 5. HOR POSITION to make “C=D”. (7) Press the [DISPLAY] key twice to return to the normal

screen.

4.6.6 VSM PRESET SETTING

Item

VSM PRESET

Measuring instrument

Remote control unit

setting

SUB MENU 4. VSM PRESET

BRIGHT

TINT

COLOUR

BRIGHT

CONTRAST

SHARP



: SELECT



/+ : OPERATE

Test point Adjustment part Description

[4. VSM PRESET]

1. TINT

2. COLOUR

3. BRIGHT

4. CONTRAST

5. SHARP

(1) Select 4. VSM PRESET from the SERVICE MENU. (2) Select BRIGHT with the [PICTURE MODE] key. (3) Adjust to reset the set values of 1. TINT – 5. SHARP to the

values shown in the table. (4) Respectively select the VSM PRESET mode for SOFT and

STANDARD, and make similar adjustment as in 3 above. (5) Press the [DISPLAY] key twice to return to the normal

screen.

[Setting Values for SUB 4. VSM PRESET]

VSM preset VSM mode BRIGHT STANDARD SOFT setting item

** ** ** ** **

DISPLAY : EXIT

1. TINT 15 ←←

2. COLOUR 15 ←←

3. BRIGHT 15 19 ←

4. CONTRAST 30 15 11

5. SHARP 15 ← 7

(No. 52176) 1-27

4.6.7 PRESET SETTING

• Do not adjust 5. PRESET in the SERVICE MENU as it requires no adjustment.

[SUB MENU 5. PRESET]

Initial setting value

Setting item Variable range

1. PSNS 0/1 0 ←

2. ACL 0/1 0 ←

3. MUS 0/1 0 ←

4. MAT 0/ 1 0 ←

5. FCO 0/1 0 ←

6. BPS 0/1 0 ←

7. IFLH 0/1 0 ←

8. VID 0/1 0 ←

9. STM 0/1 0 ←

10. AFCW 0/1 0 ←

11. VSW 0/1 0 ←

12. FFI 0/1 0 ←

13. AGC 00/01/10/11 01 ←

14. CL 50 – 95 74 ←

15. AKB 0/1 0 ←

16. HBL 0/1 0 ←

17. BKS 0/1 1 ←

18. READ STATUS – – –

19. VNR 00 – 63 15 ←

20. PEAK 0 – 3 0 ←

21. IVG 0/1 1 ←

22. WPL 0 – F 5 ←

23. SOFT CLIPPER 0 – 3 3 ←

24. IF PLL OFFSET 0 – 63 32 ←

25. OVERSHOOT 0 – 3 3 ←

26. HCO 0/1 0 ←

27. HP2 0/1 0 ←

28. AI VOLUME ADN 00/01/10/11 10 ←

29. SUB BASS -6 – +6 +3 +1

30. SUB TREBLE -6 – +6 -3 +1

31. SUB TRIMMER 0 – 6 0 ←

32. CCCLOOP 0 – 4 1 ←

33. OSD BRIGHTNESS 0 – 15 5 ←

AV-21V311/B AV-21V511/B

AV-21V531/B

4.6.8 A2NICAM SETTING [AV-21V511/B, AV-21V531/B]

• Do not adjust 6. A2NICAM in the SERVICE MENU as it requires no adjustment.

[SUB MENU 6. A2NICAM]

Setting item Variable range Initial setting value

1. ERROR LIMIT 000H – FF0H 100H

2. A2 ID THR 00H – FFH 0AH

3. SOUND SYSTEM → B/G → I → D/K → M— B/G

1-28 (No. 52176)

(display only)

+ 64 hidden pages

JVC AV-21V311, AV-21V511, AV-21V531 Schematic

Specifications and Main Features

Frequently Asked Questions

User Manual