JVC AV-21AT Service Manual

SERVICE MANUAL

COLOUR TELEVISION

AV-21AT

AV-21AT

AV-21AT

BASIC CHASSIS

CG

+−

+

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CONTENTS

■ SPECIFICATIONS ........................................................................................................................... 2

■ SAFETY PRECAUTIONS ................................................................................................................ 3

■ FEATURES ...................................................................................................................................... 4

★ OPERATING INSTRUCTIONS (APPENDED).............................................................................. 1-1

■ SPECIFIC SERVICE INSTRUCTIONS ............................................................................................ 4

■ SERVICE ADJUSTMENTS............................................................................................................10

★ STANDARD CIRCUIT DIAGRAM (APPENDED) ......................................................................... 2-1

■ PARTS LIST................................................................................................................................... 27

COPYRIGHT  2000 VICTOR COMPANY OF JAPAN, LTD.

No. 56013 1

No. 56013

May 2000

A V-21AT

SPECIFICATIONS

Item Content

Dimensions (W × H × D) 502mm × 451mm × 480.5mm
Mass 19.5kg
TV RF System B / G, I, D / K, K1
Colour System TV Mode PAL / SECAM

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

Receiving Frequency VHF (VL) 46.25MHz ~ 168.25MHz

VHF (VH) 175.25MHz ~ 463.25MHz
UHF 471.25MHz ~ 863.25MHz
CATV ● Cable TVs of Mid (X-Z, S1-S10)

Super (S11-S20) & Hyper (S21-S41) bands receivable

Intermediate VIF Carrier 38.0MHz
Frequency 31.5MHz (6.5MHz)

SIF Carrier 32.0MHz (6.0MHz)

32.5MHz (5.5MHz)

33.5MHz (4.5MHz)

Colour Sub Carrier Frequency PAL (4.43MHz)

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

Aerial Input Terminal 75Ω Unbalanced
Power Input AC110 ~ 240V, 50 / 60Hz
Power Consumption 105W (Max.)/68W (Avg.)
Picture Tube Visible size : 51cm measured diagonally
High Voltage 26.5kV ± 1.5kV (at zero beam current)
Speaker 5cm × 9 cm Oval type × 2
Audio Output 5W (Monaural)
Input Video 1Vp-p, 75Ω

Audio 500mVrms (−4dBs), High impedance

Output Video 1Vp-p, 75Ω

Audio 500mVrms (–4dBs), Low impedance

Headphone Jack Stereo mini jack (3.5ø)
Remote Control Unit RM-C364-1H (Battery size : AA/R06/UM-3 × 2)

Design & specifications are subject to change without notice.

No. 560132

SAFETY PRECAUTIONS

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

PLACE THIS PROBE
ON EACH EXPOSED
METAL PART

1500Ω 10W

0.15µF AC-TYPE

GOOD EARTH GROUND

AV-21AT

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 (!) on the parts list in Ser­vice manual. 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 : (#) 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
measure with a measuring apparatus (oscilloscope etc.) the
LIVE side GND and ISOLATED (NEUTRAL) side GND or
EARTH side GND at the same time.
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 X­Ray 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.

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.

(1) 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.

(2) 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 1500Ω 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.).

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 10kΩ 2W resistor to the anode but­ton.

No. 56013 3

A V-21AT

FEATURES

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

● Wide range voltage for AC power input.

● With AUDIO / VIDEO INPUT & OUTPUT terminals.

● 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.

2

C bus control utilizes single chip ICs for IF, V/C (Video/Chroma) and VSM (Video Status Memory).

● I

● 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 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 ON TIMER & RETURN +.

SPECIFIC SERVICE INSTRUCTIONS

DISASSEMBLY PROCEDURE

REMOVING THE REAR COVER

1. Unplug the AC power cord.

2. Remove the 6 screws marked "A" and 1 screw marked "B".

3. Withdraw the rear cover backward.

REMOVING THE MAIN PW BOARD

● After removing the rear cover.

1. Slightly raise both sides of the Main PW Board by hand and

withdraw the Main PW Board backward.
(If necessary, take off the wire clamp, connectors etc.)

REMOVING THE SPEAKER

● After removing the rear cover and the Main PW Board.

1. Remove the 2 screws marked "C".

2. Follow the same step for removing the other hand speaker.

CHECKING THE MAIN PW BOARD

T o check the back side of the Main PW Board, follow the next steps.

1. Pull out the Main PW Board. (Refer to "REMOVING THE MAIN

PW BOARD".)

2. Erect the Main PW Board vertically so that you can easily check

the back side of it.

CAUTION:

● When erecting the Main PW Board, be careful so that there will

be no contacting with other PW Board.

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

and other connectors are properly connected.

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. 560134

FRONT CABINET

SPEAKER

CRT SOCKET PWB
(Within MAIN PWB)

(×2)

C

MAIN PWB

AV-21AT

SPEAKER

REAR COVER

C

(×2)

A

(×6)

B

No. 56013 5

A V-21AT

REPLACEMENT OF MEMORY IC

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".

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 Table

1. If the value is different, select the setting item with
the MENU a key, and set the correct value with
the MENU − / + 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).

NAME OF REMOTE CONTROL KEYS

DISPLAY

MENU –

ECO

SENSOR

SYSTEM

COLOUR SOUND

TV/VIDEO

I / II

OFF

TIMER

CHANNEL

RETURN+

SCAN

DISPLAY

CHANNEL

POWER

PICTURE

MODE

1

23

456

78

MENU

−

0

VOLUME

9

-/- -

MUTING

+−

+

PICTURE
MODE

MENU

MENU +

MENU

(6) User setting

Check the user setting values in Table 2, and 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 3.) If readjustment is necessary, per­form adjustment referring to "SERVICE ADJUSTMENTS".

SERVICE MENU

SERVICE MENU

1. IF

3. DEF

5. PRESET

6. TURBO TIMER OFF

1-6 : SELECT DISP : EXIT

✽✽✽✽✽✽✽✽ ✽✽✽✽✽

2. V/C

4. VSM PRESET

✽✽.✽✽✽✽

✽✽✽ ✽✽✽✽✽

✽✽.✽✽✽✽

Fig. 1

SYSTEM CONSTANT - I

SYSTEM CONSTANT SET 1/3

COLOUR : TRIPLE
BILINGUAL : NO
TUNER : MU
ECO SENSOR : YES
LANGUAGE : E / R / C

a: SELECT

− / + : OPERATE

DISP : EXIT

SYSTEM CONSTANT - II

SYSTEM CONSTANT SET 2/3

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

a: SELECT

− / + : OPERATE

DISP : EXIT

SYSTEM CONSTANT - III

SYSTEM CONSTANT SET 3/3

AMP TUNER : NO

a: SELECT

− / + : OPERATE

DISP : EXIT

Fig. 2

No. 560136

SETTING OF SYSTEM CONSTANT SET

Table 1

Setting item Setting contents Setting value

AV-21AT

COLOUR TRIPLE
BILINGUAL NO
TUNER MU
ECO SENSOR YES
LANGUAGE E/R/C
B/B SOUND OFF

LOCK 180

COLOUR AUTO NO
QSS MINT
ALC NO
TEXT RATE 20
AMP TUNER NO

USER SETTING VALUES

MULTI. TRIPLE PAL
YES NO
MU MA
YES NO
E/R/C/U E/R/C E/R/U E/C
ON OFF

YES 10 20 ... 230

250 240
YES NO
MINT MQSS
YES NO

10 20 40 80

YES NO

Table 2

Setting item Setting value Setting item Setting value

SUB POWER ON PICTURE MODE (VSM) BRIGHT
CHANNEL POSITION 1 POSITION VNR OFF

CHANNEL PRESET

VOLUME Appropriate sound volume AUTO SHUTOFF OFF
TV/VIDEO TV ECO SENSOR OFF
ON SCREEN DISPLAY POSITION NUMBER DISPLAY BLUE BACK OFF
COLOUR SYSTEM AUTO PAL ON TIMER PR1 0:00
SOUND SYSTEM B / G CHILD LOCK OFF

Refer to OPERATING
INSTRUCTION

OFF TIMER OFF
LANGUAGE ENGLISH

No. 56013 7

A V-21AT

SERVICE MENU SETTING ITEMS

Table 3

Service menu Setting item

1. IF 1. VCO

2. DELAY POINT

2. V / C 1. CUTOFF(R/G/B)

2. DRIVE(R/B)

3. BRIGHT

4. CONT.

5. COLOUR (P / S/ N3 / N4)

6. TINT (N3 / N4)

7. SECAM BL ADJ

8. SHARP (TV / VIDEO)

3. DEF 1. VER. POSITION

2. HOR. POSITION

3. VER. HEIGHT

4. VER. LINEARITY

5. VER. SCURVE

6. HOR. VCO ADJUST

4. VSM PRESET TINT
(BRIGHT/STD/SOFT) COLOUR

BRIGHT
CONT.
SHARP

Do not adjust.

Do not adjust.

Do not adjust.

Service menu Setting item

5. PRESET 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. V.IF DET. LEVEL

10. S.IF DET. LEVEL

11. IF AGC MIN.

12. V.IF AGC

13. V.IF PMOD

14. S.IF BPF BW ADJUST

15. S.IF TRAP FO ADJUST

16. S.IF TRAP FO ADJUST 2

17. S.IF-TRAP

18. S.IF-BPF

19. VNR

20. RGB LIM.

21. RGB LIMIT LEVEL

22. S.IF SW

23. TEXT H. POSITION

24. READ DATA

6. TURBO TIMER ON/OFF
Should be set to OFF.
(When you turn the TV power off, the
Turbo Timer is automatically set to
OFF.)

Do not adjust.

No. 560138

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 reuse a chip part after removing it.

■ 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.

■ REPLACEMENT STEPS

1. How to remove Chip parts

● Resistors, capacitors, etc.

(1) As shown in the figure, while pushing the chip part with twee-

zers, alternately melt the solder at its each end.

AV-21AT

2. How to install Chip parts

● Resistors, capacitors, etc.

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

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

● Transistors, diodes, variable resistors, etc.

(1) Apply extra solder to each lead.

SOLDER

(2) As shown in the figure, while pushing the chip part with twee-

zers, alternately melt the solder at its each lead. Then, shift
and remove the chip part.

SOLDER

(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 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.

A

B

C

(4) Then solder leads B and C.

A

Note : After removing the part, remove remaining solder from

the pattern.

No. 56013 9

B

C

A V-21AT

SERVICE ADJUSTMENTS

BEFORE STARTING SERVICE ADJUSTMENT

1. There are 2 ways for adjusting this TV: One is with the
REMOTE CONTROL UNIT and the other is the conventional
method using adjustment parts and components.

2. 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.

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

4. Turn on the power of the TV and measuring instrument for warm­ing up for at least 30 minutes before starting adjustment.

5. If the receive or input signal is not specified, use the most ap­propriate signal for adjustment.

6. Never touch parts (such as variable resistors, transformers and
capacitors) not shown in the adjustment items of this service
adjustment.

7. Preparation for adjustment (presetting):
Unless otherwise specified in the adjustment items, preset the
following functions with the remote control unit.

PICTURE MODE (VSM)
COLOUR/BRIGHT/CONT./SHARP

VNR
OFF TIMER
ECO SENSOR
BLUE BACK

Function

Setting value

BRIGHT
See "VSM Preset"
on page 22.

OFF
OFF
OFF
OFF

MEASURING INSTRUMENT
AND FIXTURES

1. DC voltmeter (or Digital voltmeter)

2. Oscilloscope

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

4. Remote control unit

ADJUSTMENT/CHECK ITEMS

Adjustment/Check item Page

B1 POWER SUPPLY Check 14
FOCUS Adjustment 14
IF CIRCUIT Adjustment 14
V/C (VIDEO/CHROMA) CIRCUIT Adjustment 15
DEFLECTION CIRCUIT Adjustment 20
VSM PRESET Adjustment 22
PRESET Adjustment 23
PURITY, CONVERGENCE Adjustment 24

BASIC OPERATION IN SERVICE MENU

1. TOOL OF SERVICE MENU OPERATION

Operate the SERVICE MENU with the remote control unit.

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. V/C........................... For entering/adjusting the setting values (adjustment values) of the VIDEO/CHROMA 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. (Do not adjust the preset values.)

● 5. PRESET .................. For setting the values for VIDEO/CHROMA control. (Do not adjust the preset values.)

● 6. TURBO TIMER........ For quick setting the values of TIMER COUNT — adjustable not only by minutes but also by second. If it is ON,

(VSM: video status memory)

the time in TIMER mode changes from 1 minute into 1 second temporarily. (Applicable to OFF TIMER, ON
TIMER and AUTO SHUTOFF)

Note: When you turn the TV power off, the Turbo Timer is automatically set to OFF.

No. 5601310

AV-21AT

3. BASIC OPERATION IN SERVICE MENU

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.)

SERVICE MENU

1. IF

3. DEF

5. PRESET

6. TURBO TIMER OFF

1-6 : SELECT DISP : EXIT

✽✽✽✽✽✽✽✽ ✽✽✽✽✽

2. V/C

4. VSM PRESET

✽✽.✽✽✽✽

✽✽✽ ✽✽✽✽✽

✽✽.✽✽✽✽

Fig. 1

(2) Selection of SUB MENU SCREEN

Press one of the keys 1 ~ 6 on the remote control unit, and select the SUB MENU SCREEN from the SERVICE MENU. (See Fig. 2 on
the next page.)

SERVICE MENU → SUB MENU 1. IF

2. V / C

3. DEF

4. VSM PRESET

5. PRESET

6. TURBO TIMER

(3) Method of Setting

*Once the setting values are set, they are memorized automatically.
*It must not adjust without inputting a signal.

1) 1. IF

[1. VCO]

(a) 1 Key ......................................... Select 1. IF.

(b) 1 Key ......................................... Select 1. VCO. (CW)

(c) VCO(CW) . ................................ Adjust VCO(CW) while watching the colour (yellow/blue) of the characters on the screen.

For details, refer to the adjustment table.

(d) 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......................... Adjust the setting value.

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

2) 2. V/C, 3. DEF, 4. VSM PRESET and 5. PRESET

Note: Do not adjust "4. VSM PRESET" and "5. PRESET" unless you had changed its value by mistake.

(a) 2 ~ 5 Keys ................................. Select one from 2. V/C, 3. DEF, 4. VSM PRESET and 5. PRESET.

(b) MENU a key........................ Select setting items.

(c) MENU − / + Key......................... Adjust the setting values of the setting items.

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

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

3) 6. TURBO TIMER

(a) 6 Key ......................................... Each time you press the key, ON/OFF state of TURBO TIMER changes.

(Should be set to OFF.)

(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.

No. 56013 11

A V-21AT

SUB MENU SCREEN

SERVICE MENU

SERVICE MENU

1. IF

3. DEF

5. PRESET

6. TURBO TIMER OFF

1-6 : SELECT DISP : EXIT

✽✽✽✽✽✽✽✽ ✽✽✽✽✽

2. V/C

4. VSM PRESET

✽✽.✽✽✽✽

✽✽✽ ✽✽✽✽✽

✽✽.✽✽✽✽

SUB MENU 1. IF

IF

1. VCO

2. DELAY POINT

1-2 : SELECT DISP : EXIT

SUB MENU 2. V/C

V/C

1. CUTOFF

50Hz

a : SELECT

− / + : OPERATE

PAL

✽ ✽✽

(R)
(G) ✽ ✽✽
(B)

✽ ✽✽

DISP : EXIT

VCO (CW) ✽✽✽.✽✽ MHz

TOO HIGH
ABOVE REFERENCE
JUST REFERENCE
BELOW REFERENCE
TOO LOW
AFT ADJUST
VCO ADJUST ✽✽✽
FINE

DELAY POINT

AGC TAKE-OVER

− / + : OPERATE

Setting item

1. CUTOFF(R/G/B)

2. DRIVE(R/B)

3. BRIGHT

4. CONT.

5. COLOUR (P / S/ N3 / N4)

6. TINT (N3 / N4)

7. SECAM BL ADJ

8. SHARP (TV / VIDEO)

✽✽✽

DISP : EXIT

✽✽

DISP : EXIT

Do not adjust.

SUB MENU 5. PRESET

PRESET PAL

1. C-TRAP FIX

50Hz B/G

a : SELECT

− / + : OPERATE

Do not adjust.

6 . TURBO TIMER

TURBO TIMER

✽✽✽

DISP : EXIT

OFF

ON

SUB MENU 3. DEF

DEF.

1. VER. POSITION ✽✽✽

50Hz

a : SELECT

− / + : OPERATE

DISP : EXIT

SUB MENU 4. VSM PRESET

BRIGHT

TINT ✽✽✽
COLOUR ✽✽✽

BRIGHT ✽✽✽
CONT. ✽✽✽

SHARP ✽✽✽

a : SELECT

− / + : OPERATE

DISP : EXIT

Fig. 2

50Hz / 60Hz

Setting item

1. VER. POSITION

2. HOR. POSITION

3. VER. HEIGHT

4. VER. LINEARITY

5. VER. SCURVE

6. HOR. VCO ADJUST

BRIGHT / STD / SOFT

Do not adjust.

Do not adjust.

No. 5601312

ADJUSTMENT LOCATIONS

CRT SOCKET PWB (Within MAIN PWB)

(SOLDER SIDE)

TOP

TP-47R/G

AV-21AT

U

MAIN PWB

PW

DEG

F901

TP-47G/R

S

T

IC701

TP-47B

E1

TP-E

IC702
MEMORY IC

FRONT

TU001

IC301

S1

1

5

1 Pin TP-91(B1)
2 Pin NC

HV

U

HVT

UPPER: FOCUS
LOWER: SCREEN

3 Pin X-ray 1
4 Pin X-ray 2
5 Pin TP-E( )

No. 56013 13

A V-21AT

ADJUSTMENTS

B1 POWER SUPPLY

Item Test point Adjustment part

Measuring
instrument

Check of ● Signal TP-91 (B1)
B1 POWER Generator TP-E (

""

")

""

SUPPLY ● DC [S1

Voltmeter connector]

FOCUS ADJUSTMENT

Item Test point Adjustment part

Adjustment Signal FOCUS VR
of FOCUS generator [In HVT]

Measuring
instrument

IF CIRCUIT ADJUSTMENT

Description

1. Receive a whole black signal.

2. Connect a DC voltmeter between TP-91 (B1) and TP-E (")
(between pins 1 and 5 of the connector S1).

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

Description

1. Receive a cross-hatch signal.

2. While watching the screen, adjust the FOCUS VR to make the
vertical and horizontal lines as fine and sharp as possible.

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

Item Test point Adjustment part

Measuring
instrument

Adjustment Remote VCO (CW)
of VCO (CW) control unit

VCO (CW) ✽✽✽.✽✽ MHz

TOO HIGH
ABOVE REFERENCE
JUST REFERENCE
BELOW REFERENCE
TOO LOW
AFT ADJUST
VCO ADJUST ✽✽✽
FINE

DISP : EXIT

✽✽✽

fv

YELLOW

Do not adjust.

Description

● Under normal conditions, no adjustment is required.
Note: Do not adjust without inputting signal.

1. Receive a colour bar signal.

2. Select 1. IF from the SERVICE MENU.

3. Press the 1 key to select 1. VCO.

4. Select VCO ADJUST with the MENU a key and make sure
that the setup value shown in the screen is +00.

5. Press the MENU − or + key until the colour of the characters
"TOO HIGH" displayed on the screen changes from blue to
yellow.

6. Press the MENU − or + key until the colour of the characters
"TOO LOW" displayed on the screen changes from blue to
yellow. At this time, check that the value of VCO ADJUST on
the screen is +00 or about +00.

7. Select AFT ADJUST with the MENU a key.

8. Then, press the MENU − or + key until the colour of the char­acters "JUST REFERENCE" displayed on the screen changes
from blue to yellow.

9. Press the DISPLAY key three times to return to normal screen.

No. 5601314

AV-21AT

Item Test point Adjustment part

Adjustment Remote DELAY POINT
of DELAY control unit (AGC TAKE-OVER)
POINT

Setting (Adjustment) Item

DELAY POINT
(AGC TAKE-OVER)

Measuring
instrument

Variable Initial setting
range value

0 ~ 127 43

1. Receive a black and white signal (colour off).

2. Select 1. IF from the SERVICE MENU.

3. Select 2. DELAY POINT by pressing the 2 key on the remote
control.

4. Adjust the MENU − or + key until video noise disappears.

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.

Description

V/C (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 (adjustment) items not listed in "ADJUSTMENT".

[SUB MENU 2. V/C]

Colour system Variable Initial setting value

Setting item range PAL SECAM NTSC 3.58 NTSC 4.43

1. CUT OFF (R / G / B) −128 ~ +127 −50 bbb

2. DRIVE (R / B) −64 ~ +63 0 bbb

3. BRIGHT −128 ~ +127 0 bbb

4. CONT. −64 ~ +63 0 bbb

5. COLOUR (P / S / N3 / N4) −64 ~ +63 0 bbb

6. TINT (N3 / N4) TV / VIDEO −64 ~ +63 0 / 0 0 / 0

7. SECAM BL ADJUST −32 ~ +31 0 bbb

8. SHARP TV / VIDEO −32 ~ +31 −5 / +15 bbb

: Do not adjust.

No. 56013 15

A V-21AT

Item Test point Adjustment part

Measuring
instrument

Adjustment ● Signal 1. CUTOFF (R)
of WHITE generator CUTOFF (G)
BALANCE CUTOFF (B)
(Low light) ● Remote

control SCREEN VR
unit (In HVT)

V/C

1. CUTOFF

50Hz

a : SELECT

− / + : OPERATE

PAL

✽ ✽✽

(R)
(G)

✽ ✽✽

(B)

✽ ✽✽

DISP : EXIT

REMOTE CONTROL UNIT

H.LINE OFF

12 3

H.LINE ON

G. CUTOFF ( )
B. CUTOFF ( )

B. DRIVE ( )

B. CUTOFF ( )
B. DRIVE ( )

G. CUTOFF ( )

R. CUTOFF ( )

R. DRIVE ( )

R. CUTOFF ( )

R. DRIVE ( )

4

789

56

Description

1. Receive a black and white signal (colour off).

2. Select 2. V/C from the SERVICE MENU.

3. Select 1. CUTOFF (R), (G) and (B) with the MENU a key,
and set each value to initial setting value with 4 ~ 9 keys on
the remote control unit.

4. Press the 1 key on the remote control unit 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 keys 4 ~ 9 on the remote control unit 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.

Setting (Adjustment) Variable Initial setting
item range value

R −128 ~ +127 −50

1. CUT OFF G −128 ~ +127 −50
B −128 ~ +127 −50

Adjustment ● Signal 2. DRIVE (R)
of WHITE generator DRIVE (B)
BALANCE
(High light) ● Remote

control
unit

V/C

2. DRIVE

50Hz

a : SELECT

− / + : OPERATE

PAL

✽ ✽✽

(R)
(B)

✽ ✽✽

DISP : EXIT

1. Receive a black and white signal (colour off).

2. Select 2. V/C from the SERVICE MENU.

3. Select 2. DRIVE (R) / (B) with MENU a key, and set each
value to initial setting value with 4 and 7 keys, or 6 and 9 keys
on the remote control unit.

4. Use the keys 4 and 7 or 6 and 9 to produce a white screen.

5. Press the DISPLAY key twice to return to the normal screen.

Setting (Adjustment) Variable Initial setting
item range value

R −64 ~ +63 0

2. DRIVE
B −64 ~ +63 0

No. 5601316

AV-21AT

Item Test point Adjustment part

Adjustment Remote 3. BRIGHT
of control unit
SUB
BRIGHT

Adjustment Remote 4. CONT.
of control unit
SUB CONT.

Adjustment Remote 5. COLOR
of control unit
SUB
COLOUR-I PAL COLOUR

Measuring
instrument

Description

1. Receive any broadcast.

2. Select 2. V/C from the SERVICE MENU.

3. Select 3. BRIGHT with the MENU a key.

4. Set the initial setting value with the MENU − or + key.

5. If the brightness is not the best with the initial set value, make
fine adjustment until you get the best brightness.

6. Press the DISPLAY key twice to return to the normal screen.

1. Receive any broadcast.

2. Select 2. V/C from the SERVICE MENU.

3. Select 4. CONT. with the MENU a key.

4. Set the initial setting value with the MENU − or + key.

5. If the contrast is not the best with the initial set value, make
fine adjustment until you get the best contrast.

6. Press the DISPLAY key twice to return to the normal screen.

[Method of adjustment without measuring instrument]

(PAL COLOUR)

1. Receive a PAL broadcast.

2. Select 2. V/C from the SERVICE MENU.

3. Select 5. COLOUR with the MENU a key.

4. Set the initial setting value for PAL COLOUR with the MENU

− or + key.

5. If the colour is not the best with the initial set value, make fine
adjustment until you get the best colour.

6. Press the DISPLAY key twice to return to the normal screen.

SECAM COLOUR

NTSC 3.58 COLOUR

(SECAM COLOUR)

1. Receive a SECAM broadcast.

2. 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. 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.

No. 56013 17

A V-21AT

Item Test point Adjustment part

Measuring
instrument

Adjustment ● Signal TP-47G/R 5. COLOUR
of SUB generator TP-E (

""

")

""

COLOUR-II [CRT

● Oscillo- SOCKET PAL COLOUR

scope PWB]

● Remote

control
unit

Mg

B

R

SECAM COLOUR

(A)

Cy

Y

W

G

(−)
0V
(+)

NTSC 3.58 COLOUR

Description

[Method of adjustment using measuring instrument]

(PAL COLOUR)

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

2. Select 2. V/C from the SERVICE MENU.

3. Select 5. COLOUR with the MENU a key.

4. Set the initial setting value of PAL COLOUR with the MENU

− or + key.

5. Connect the oscilloscope between TP-47G/R and TP-E.

6. Adjust PAL COLOUR to set the value (A) in the figure to +12V

(W & G).

(SECAM COLOUR)

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

2. Set the initial setting value of SECAM COLOUR with the MENU

− or + key.

3. Adjust SECAM COLOUR to set the value (A) in the figure to

+9V (W & G).

(NTSC 3.58 COLOUR)

1. Receive 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 set the value (A) in the figure
to +7V (W & G).

Adjustment Remote 6. TINT
of control unit
SUB TINT-I

NTSC 3.58 TINT

(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 without measuring instrument]

(NTSC 3.58 TINT)

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

2. Select 2. V/C from the SERVICE MENU.

3. Select 6. TINT with the MENU a key.

4. Set the initial setting value of NTSC 3.58 with the MENU − or
+ key.

5. If you cannot get the best tint with the initial setting value,
make fine adjustment until you get the best tint.

6. Press the DISPLAY key twice to return to the normal screen.

(NTSC 4.43 COLOUR)

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

No. 5601318

AV-21AT

Item Test point Adjustment part

Measuring
instrument

Adjustment ● Signal TP-47G/R 6. TINT
of generator TP-E (

""

")

""

SUB TINT-II [CRT

● Oscillo- SOCKET NTSC 3.58 TINT

scope PWB]

● Remote

control
unit

B

Mg

R

(B)

Cy

W

G

Y

(−)
0V
(+)

Description

[Method of adjustment using measuring instrument]

(NTSC 3.58 TINT)

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

2. Select 2. V/C from the SERVICE MENU.

3. Select 6. TINT with the MENU a key.

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

5. Connect the oscilloscope between TP-47G/R and TP-E.

6. Adjust NTSC 3.58 TINT to set the value (B) in the figure to
+7V (W & Cy).

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.

Adjustment Remote
of BLACK control unit
OFFSET
(SECAM) 7. SECAM BL

ADJUST

REMOTE CONTROL UNIT

BLACK &
WHITE OFF

BLACK &
WHITE ON

12 3

4

789

56

[Method of adjustment without measuring instrument]

1. Receive a SECAM HALF COLOUR BAR signal (210.25MHz).

2. Select 2. V/C from the SERVICE MENU.

3. Select 7. SECAM BL ADJUST with the MENU a key.

4. Set the initial setting value the MENU - or + key.

5. While alternately pressing keys 1 (Black & White ON) and 2
(Black & White OFF), make sure that there is no colour on the
black & white screen.

6. If the black & white screen is not the best with the initial set­ting value, make fine adjustment until you get the best black
& white screen.

7. Press the DISPLAY key twice to return to the normal screen.

No. 56013 19

A V-21AT

DEFLECTION CIRCUIT ADJUSTMENT

● There are 2 modes of adjustment (initial setting value) — 50Hz mode and 60Hz mode — depending upon the kind of signals (vertical
frequency 50Hz / 60Hz).

● When adjusted in 50Hz mode, 60Hz mode will be automatically set.

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.

[SUB MENU 4. DEF]

Setting item Adjustment name Variable range

Initial setting value

50Hz 60Hz

1. VER. POSITION Vertical center −4 ~ +3 −1 −3

2. HOR. POSITION Horizontal center −16 ~ +15 +3 +3

3. VER. HEIGHT Vertical height −64 ~ +63 −35 +1

4. VER. LINEARITY Vertical linearity −32 ~ +31 +15 −1

5. VER. SCURVE Vertical scurve −32 ~ +31 −32 0

6. HOR. VCO ADJUST Horizontal VCO −64 ~ +63 0 0

: Do not adjust.

Item Test point Adjustment part

Measuring
instrument

Adjustment ● Signal 1. VER. POSITION
of generator 3. VER. HEIGHT
V-HEIGHT
& ● Remote
V-POSITION control

unit

HH'

V

[ fv : 50Hz mode]

1. Receive a cross-hatch signal.

2. Select 3. DEF from the SERVICE MENU.

3. Select 1. VER. POSITION with the MENU a key.

4. Set the initial setting value of 1. VER. POSITION with the MENU

− / + key.

5. Adjust VER. POSITION to make V = V'.

6. Select 3. VER. HEIGHT with the MENU a key.

7. Set the initial setting value of 3. VER. HEIGHT with the MENU

Description

− / + key.

8. Adjust VER. HEIGHT and make the vertical screen size 92%
of the picture size with the MENU − / + key.

Screen

size

92%

V'

(to be continued)

Screen size

Picture
size
100%

Picture size 100%

No. 5601320

AV-21AT

Item Test point Adjustment part

Measuring
instrument

Adjustment 2. HOR. POSITION
of
H-POSITION

HH'

V

V'

Adjustment 4. VER. LINEARITY
of 5. VER. SCURVE
V-LINEARITY
&
V-SCURVE

TOP

CENTER

Description

9. Receive a circle pattern signal.

10. Select 2. HOR. POSITION with the MENU a key.

11. Set the initial setting value of 2. HOR. POSITION with the
MENU − / + key.

12. Adjust HOR. POSITION to make H = H' with the MENU − / +
key.

● When the vertical linearity has been deteriorated remark­ably, perform the following steps.

13. Receive a cross-hatch signal.

14. Select 4. VER. LINEARITY with the MENU a key.

15. Set the initial setting value of 4. VER. LINEARITY with the
MENU − / + key.

16. Select 5. VER. SCURVE with the MENU a key.

17. Set the initial setting value of 5. VER. SCURVE with the MENU

− / + key.

18. Adjust VER. LINEARITY and VER. SCURVE so that the spaces
of each line on TOP, CENTER and BOTTOM become uniform.

BOTTOM

19. Make sure that the adjustment is properly done on the screen
of 60Hz mode.

20. Press the DISPLAY key twice to return to the normal screen.

[NOTE]

● When adjust in 60Hz mode, only 60Hz mode is adjust.

No. 56013 21

A V-21AT

VSM PRESET ADJUSTMENT

Item Test point Adjustment part

Measuring
instrument

Setting of Remote TINT
VSM control unit COLOUR
PRESET BRIGHT

CONT.
SHARP

SUB MENU 4. VSM PRESET

BRIGHT

TINT ✽✽✽
COLOUR ✽✽✽

BRIGHT ✽✽✽
CONT. ✽✽✽

SHARP ✽✽✽

a : SELECT

− / + : OPERATE

DISP : EXIT

Description

(VSM PRESET)

1. Select 4. VSM PRESET from the SERVICE MENU.

2. Select BRIGHT with the PICTURE MODE key.

3. Adjust the MENU a key and MENU − or + key to reset the
set values of TINT ~ 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 MENU 4. VSM PRESET]

VSM preset
VSM mode BRIGHT STANDARD SOFT
Setting item

TINT

SETTING VALUE

COLOUR

SETTING VALUE

BRIGHT

SETTING VALUE

CONT.

SETTING VALUE

SHARP

SETTING VALUE

+15

+15

+15

+30 +15 +11

+15 +15 +12

bb

b

bb

bb

b

bb

bb

b

bb

bb

b

bb

bb

b

bb

bb

b

bb

: Do not adjust.

No. 5601322

AV-21AT

PRESET ADJUSTMENT

● No adjustment is necessary.

● Adjust only when you had changed the value by miss operation.

[SUB MENU 5. PRESET]

Colour system Initial setting value

Setting item PAL SECAM NTSC 3.58 NTSC 4.43

1. C-TRAP FIX 1 bbb

2. SHARP PEAK 0 bbb

3. ABL 1 bbb

4. GAMMA 0 bbb

5. Y.DELAY TIME TV 0 2 2 3
VIDEO 0 2 0 2

6. BLACK EXP START 3 bbb

7. C-BPF TV 1 b 0 b
VIDEO 1 bbb

8. CW/SCP 0 bbb

9. V.IF DET. LEVEL 0 bbb

11. IF AGC MIN. 0 bbb

12. V.IF AGC 0 bbb

13. V.IF PMOD 0 bbb

19. VNR 15 bbb

20. RGB LIM. 1 bbb

21. RGB LIMIT LEVEL 2 bbb

23. TEXT H. POSITION −3 bbb

24. READ DATA

: Do not adjust.

TV RF system Initial setting value

Setting item B/G I D/K M

10. S.IF DET. LEVEL 0 bbb

14. S.IF BPF BW ADJUST 0 bbb

15. S.IF TRAP FO ADJUST 0 bbb

16. S.IF TRAP FO ADJUST 2 0 bbb

17. S.IF-TRAP 0 bbb

18. S.IF-BPF 0 bb 1

22. S.IF SW 1 bb 0

: Do not adjust.

No. 56013 23

A V-21AT

PURITY, CONVERGENCE

PURITY ADJUSTMENT

1. Demagnetize CRT with the demagnetizer.

2. Loosen the retainer screw of the deflection yoke.

3. Remove the wedges. (Fig. 1.)

4. Input a green raster signal from the signal generator, and turn
the screen to green raster.

5. Move the deflection yoke backward.

6. Bring the long lug of the purity magnets on the short lug and
position them horizontally. (Fig. 2)

7. Adjust the gap between two lugs so that the green raster will
come into the center of the screen. (Fig. 3)

8. Move the deflection yoke 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.

Long lug

CRT

WEDGE

P : PURITY MAGNET
4 : 4 POLES (convergence magnets)
6 : 6 POLES (convergence magnets)

DEFLECTION
YOKE

P

4 6

P/C

MAGNETS

• P/C MAGNETS

Fig. 1

PURITY MAGNETS

10. Input a cross-hatch signal.

11. Verify that the screen is horizontal.

12. Input red and blue raster signals, and make sure that purity is
properly adjusted.

Short lug

(FRONT VIEW)

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

Fig. 2

GREEN RASTER

CENTER

Fig. 3

No. 5601324

STATIC CONVERGENCE ADJUSTMENT

1. Input a cross-hatch signal.

2. Using 4-pole convergence magnets, overlap the red and blue
lines in the center of the screen (Fig. 1) to turn them to magenta
(red/blue).

3. Using 6-pole convergence magnets, overlap the magenta (red/
blue) and green lines in the center of the screen to turn them to
white.

AV-21AT

(FRONT VIEW)

4. Repeat 2 and 3 above, and make best convergence.

DYNAMIC CONVERGENCE ADJUSTMENT

1. Move the deflection yoke up and down and overlap the lines in
the center. (Fig. 2)

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

3. Repeat 1 and 2 above, and make best convergence.

● After adjustment, fix the wedge at the original position.
Fasten the retainer screw of the deflection yoke.
Fix the PC magnets with glue.

(FRONT VIEW)

BLUE

GREEN

RED

(FRONT VIEW)

RED

RED GREEN BLUE

GREEN

BLUE

Fig. 1

GREEN

Fig. 2

REDBLUE

BLUE

GREEN

RED
GREEN

BLUE

RED

GREEN
BLUE

RED

BLUE
GREEN
RED

Fig. 3

No. 56013 25

A V-21AT

SELF-CHECK FUNCTIONS

1. Outline

This model has self-check functions given below. When an abnormality has been detected, the SUB POWER is turned off and the ON
TIMER LED flashes to inform of the failure. An abnormality is detected by the signal input state of the control line connected to the
microcomputer.

2. Self-check items

Check item

Over-current protection

Details of detection

An over-current on the low B line
is detected.

CRT NECK protection

Operation of CRT NECK protec­tion circuit

3. Self-check indicating function

When an abnormality has been detected at about 3 seconds
after the power is turned on, the SUB POWER is turned off
immediately and the ON TIMER LED flashes.

Method of detection

The main microcomputer detects
the possible abnormality at 20­msec. intervals and judges the re­sults in every 24 time. Of the 24
times, if NG is detected more
than 13 times, it is judged that
there is an abnormality.

DITTO

After about
3 seconds

Power on

Start of
detection

State of abnormality

When an abnormality has been
detected, the SUB-POWER is
turned off. While the SUB­POWER is being turned off, the
POWER key on the remote con­trol unit is not operational until the
power cord is taken out and put
in again.

DITTO

Detection of
an abnormality

Flashing ON TIMER LED

SUB-POWER OFF

[ Indication by the LED ]

Item LED flashing intervals

Over-current and CRT NECK protection At 0.24-second intervals

No. 5601326

AV-21AT

PARTS LIST

CAUTION

■ The parts identified by the ! symbol are important for the safety. Whenever replacing these parts, be sure to
use specified ones to secure the safety.

■ The parts not indicated in this Parts List and those which are filled with lines — in the Parts No. columns will not
be supplied.

■ P. W . Board Ass'y will not be supplied, but those which are filled with the Parts No. in the Parts No. columns will
be supplied.

ABBREVIATIONS OF RESISTORS, CAPACITORS AND TOLERANCES

RESISTORS CAPACITORS

C R Carbon Resistor C CAP. Ceramic Capacitor

F R Fusible Resistor E CAP. Electrolytic Capacitor

P R Plate Resistor M CAP. Mylar Capacitor

V R Variable Resistor HV CAP. High Voltage Capacitor

HV R High Voltage Resistor MF CAP. Metalized Film Capacitor

MF R Metal Film Resistor MM CAP. Metalized Mylar Capacitor

MG R Metal Glazed Resistor MP CAP. Metalized Polystyrol Capacitor

MP R Metal Plate Resistor PP CAP. Polypropylene Capacitor

OM R Metal Oxide Film Resistor PS CAP. Polystyrol Capacitor

CMF R Coating Metal Film Resistor TF CAP. Thin Film Capacitor

UNF R Non-Flammable Resistor MPP CAP. Metalized Polypropylene Capacitor

CH V R Chip Variable Resistor TAN. CAP. Tantalum Capacitor

CH MG R Chip Metal Glazed Resistor CH C CAP. Chip Ceramic Capacitor

COMP. R Composition Resistor BP E CAP. Bi-Polar Electrolytic Capacitor

LPTC R Linear Positive Temperature Coefficient CH AL E CAP. Chip Aluminum Electrolytic Capacitor

Resistor

NETW R Network Resistor CH AL BP CAP. Chip Aluminum Bi-Polar Capacitor

CH TAN. E CAP. Chip Tantalum Electrolytic Capacitor

CH AL BP E CAP. Chip Tantalum Bi-Polar Electrolytic Capacitor

TOLERANCES

F G J K M N R H Z P

±1% ±2% ±5% ±10% ±20% ±30%

No. 56013 27

+30% +50% +80% +100%

−10% −10% −20% −0%

AV-21A T

CONTENTS

■ P.W. BOARD .....................................................................................................................................................28

■ EXPLODED VIEW PARTS LIST .......................................................................................................................28

■ EXPLODED VIEW ............................................................................................................................................29

■ PRINTED WIRING BOARD PARTS LIST

● MAIN PW BOARD ASS'Y................................................................................................................................................ 30

■ PACKING ..........................................................................................................................................................34

■ PACKING PARTS LIST .....................................................................................................................................34

■ REMOTE CONTROL UNIT PAR TS LIST..........................................................................................................34

P.W. BOARD

P.W.B. ASS'Y Part No.

MAIN P.W.B. SCG-1247A-H2

EXPLODED VIEW PARTS LIST

! Ref.No. Part No. Part Name Description Local

! V01 A51LMV20X PICTURE TUBE

DY01 CE20336-00A DEF YOKE

! L01 QQW0006-001 DEGAUSSING COIL
! T1522 QQH0069-001 H.V. TRANSF.

1 GG10047-002A-H FRONT CABINET ASSY
2 CM43094-009-H JVC MARK
3 CM36375-001-H CDS WINDOW
4 CM36516-004-H POWER KNOB

5 CM35235-012-H SPRING
6 CM36518-001-H LED LENS
7 CM36517-004-H CONTROL KNOB

8 CE42153-00AJ1 WEDGE ASSY (×4)

9 A75034-B PC MAGNET or CE42378-00B
10 CHGB0016-0B-FH BRAIDED ASSY
11 A48457-3-H SPRING

12 CEBSS09D-05KJ2 SPEAKER (×2) SP01

13 CM48144-002-H PB STOPPER

! 14 CM12863-002-MH REAR COVER
! 15 LC20377-010B-H RATING LABEL

16 QYSBSF3010Z TAPPING SCREW

! 17 CM23167-A01-H CORD CLAMP
! 18 QMP40D0-200J5 POWER CORD or QMP40D0-200J3

19 QYSBSFG4016Z TAPPING SCREW (×6)

20 CM36617-B01-H BACK BOARD

No. 5601328

EXPLODED VIEW

!

V01

!

L01

DY01

AV-21AT

1

5

4

11

3

2

10

8

9

CRT SOCKET PWB
(Within MAIN PWB)

12

!

14

12

7

MAIN PWB

!

T1522

6

13

20

19

!

15

!

17

18

No. 56013 29

16

!

AV-21AT

PRINTED WIRING BOARD PARTS LIST

! Symbol No. Part No. Part Name Description Local

! Symbol No. Part No. Part Name Description Local

MAIN P.W. BOARD ASS'Y (SCG-1247A-H2)

! Symbol No. Part No. Part Name Description Local ! Symbol No. Part No. Part Name Description Local

RESISTOR

R1002 NRSA02J-221X CH MG R 220Ω 1/10W J
R1003 NRSA02J-221X CH MG R 220Ω 1/10W J
R1004 NRSA02J-563X CH MG R 56kΩ 1/10W J
R1102 NRSA02J-750X CH MG R 75Ω 1/10W J
R1103 NRSA02J-100X CH MG R 10Ω 1/10W J
R1109 NRSA02J-682X CH MG R 6.8kΩ 1/10W J
R1110 NRSA02J-272X CH MG R 2.7kΩ 1/10W J
R1111 NRSA02J-181X CH MG R 180Ω 1/10W J

R1112 NRSA02J-100X CH MG R 10Ω 1/10W J
R1113 NRSA02J-101X CH MG R 100Ω 1/10W J
R1114 NRSA02J-472X CH MG R 4.7kΩ 1/10W J
R1115 NRSA02J-222X CH MG R 2.2kΩ 1/10W J
R1117 NRSA02J-0R0X CH MG R 0.0Ω 1/10W J
R1118 NRSA02J-222X CH MG R 2.2kΩ 1/10W J
R1120 NRSA02J-391X CH MG R 390Ω 1/10W J
R1121 NRSA02J-221X CH MG R 220Ω 1/10W J

R1159 NRSA02J-184X CH MG R 180kΩ 1/10W J
R1301 NRSA02J-221X CH MG R 220Ω 1/10W J
R1302 NRSA02J-472X CH MG R 4.7kΩ 1/10W J
R1303 NRSA02J-101X CH MG R 100Ω 1/10W J
R1304 NRSA02J-101X CH MG R 100Ω 1/10W J
R1305 NRSA02J-101X CH MG R 100Ω 1/10W J
R1306 NRSA02J-221X CH MG R 220Ω 1/10W J
R1307 NRSA02J-122X CH MG R 1.2kΩ 1/10W J

R1308 NRSA02J-182X CH MG R 1.8kΩ 1/10W J
R1312 NRSA02J-0R0X CH MG R 0.0Ω 1/10W J
R1313 NRSA02J-102X CH MG R 1kΩ 1/10W J
R1314 NRSA02J-102X CH MG R 1kΩ 1/10W J
R1321 NRSA02J-152X CH MG R 1.5kΩ 1/10W J
R1322 NRSA02J-272X CH MG R 2.7kΩ 1/10W J
R1323 NRSA02J-103X CH MG R 10kΩ 1/10W J
R1324 NRSA02J-102X CH MG R 1kΩ 1/10W J

R1326 NRSA02J-101X CH MG R 100Ω 1/10W J
R1327 NRSA02J-475X CH MG R 4.7MΩ 1/10W J
R1341 NRSA02J-332X CH MG R 3.3kΩ 1/10W J
R1347 NRSA02J-392X CH MG R 3.9kΩ 1/10W J
R1349 NRSA02J-123X CH MG R 12kΩ 1/10W J
R1351 NRSA02J-151X CH MG R 150Ω 1/10W J
R1352 NRSA02J-151X CH MG R 150Ω 1/10W J
R1353 NRSA02J-151X CH MG R 150Ω 1/10W J

R1354 NRSA02J-331X CH MG R 330Ω 1/10W J
R1355 NRSA02J-331X CH MG R 330Ω 1/10W J
R1356 NRSA02J-331X CH MG R 330Ω 1/10W J
R1357 NRSA02J-101X CH MG R 100Ω 1/10W J
R1358 NRSA02J-101X CH MG R 100Ω 1/10W J
R1359 NRSA02J-101X CH MG R 100Ω 1/10W J
R1360 QRZ0107-152Z C R 1.5kΩ 1/2W K
R1361 QRZ0107-152Z C R 1.5kΩ 1/2W K

R1362 QRZ0107-152Z C R 1.5kΩ 1/2W K
R1363 QRL029J-123 OM R 12kΩ 2W J
R1364 QRL029J-123 OM R 12kΩ 2W J
R1365 QRL029J-123 OM R 12kΩ 2W J
R1366 NRSA02J-182X CH MG R 1.8kΩ 1/10W J
R1367 NRSA02J-182X CH MG R 1.8kΩ 1/10W J
R1368 NRSA02J-182X CH MG R 1.8kΩ 1/10W J
R1369 QRE121J-394Y C R 390KΩ 1/2W J

R1372 NRSA02J-0R0X CH MG R 0.0Ω 1/10W J
R1374 NRSA02J-392X CH MG R 3.9kΩ 1/10W J
R1401 NRSA02J-103X CH MG R 10kΩ 1/10W J
R1421 NRSA02J-122X CH MG R 1.2kΩ 1/10W J
R1422 NRSA02J-122X CH MG R 1.2kΩ 1/10W J
R1423 NRSA02J-331X CH MG R 330Ω 1/10W J
R1424 NRSA02J-101X CH MG R 100Ω 1/10W J
R1425 NRSA02J-471X CH MG R 470Ω 1/10W J

R1426 NRSA02J-0R0X CH MG R 0.0Ω 1/10W J
R1429 NRSA02J-103X CH MG R 10kΩ 1/10W J
R1430 NRSA02J-823X CH MG R 82kΩ 1/10W J
R1431 NRSA02J-103X CH MG R 10kΩ 1/10W J
R1432 QRE121J-2R7Y C R 2.7Ω 1/2W J
R1433 QRE121J-2R7Y C R 2.7Ω 1/2W J
R1436 NRSA02J-823X CH MG R 82kΩ 1/10W J
R1440 QRE121J-471Y C R 470Ω 1/2W J

R1441 NRSA02J-822X CH MG R 8.2kΩ 1/10W J

RESISTOR

R1442 NRSA02J-103X CH MG R 10kΩ 1/10W J
R1443 QRE121J-1R0Y C R 1.0kΩ 1/2W J
R1453 NRSA02J-272X CH MG R 2.7kΩ 1/10W J
R1501 QRE121J-221Y C R 220Ω 1/2W J
R1502 NRSA02J-0R0X CH MG R 0.0Ω 1/10W J
R1503 NRSA02J-682X CH MG R 6.8kΩ 1/10W J
R1521 NRSA02J-681X CH MG R 680Ω 1/10W J
R1522 NRSA02J-103X CH MG R 10kΩ 1/10W J

R1524 QRL02EJ-820X OM R 82Ω 2W J
R1525 QRL02EJ-820X OM R 82Ω 2W J
R1526 QRE121J-270Y C R 27Ω 1/2W J
R1530 QRE121J-223Y C R 22kΩ 1/2W J
R1531 NRSA02J-472X CH MG R 4.7kΩ 1/10W J
R1533 NRSA02J-332X CH MG R 3.3kΩ 1/10W J
R1534 NRSA02J-332X CH MG R 3.3kΩ 1/10W J

! R1551 QRZ9011-1R0 F R 1.0Ω 1/2W J

R1552 QRJ146J-2R2X C R 2.2Ω 1/4W J
R1554 QRE121J-681Y C R 680Ω 1/2W J
R1571 QRE121J-222Y C R 2.2kΩ 1/2W J
R1573 QRT02EJ-1R5X OM R 1.5Ω 2W J
R1574 QRT02EJ-1R5X OM R 1.5Ω 2W J
R1576 QRE121J-223Y C R 22kΩ 1/2W J
R1577 NRSA02J-392X CH MG R 3.9kΩ 1/10W J
R1578 NRSA02J-103X CH MG R 10kΩ 1/10W J

R1581 QRE121J-182Y C R 1.8kΩ 1/2W J
R1582 NRSA02J-223X CH MG R 22kΩ 1/10W J
R1583 NRSA02J-393X CH MG R 39kΩ 1/10W J
R1651 NRSA02J-103X CH MG R 10kΩ 1/10W J
R1652 NRSA02J-821X CH MG R 820Ω 1/10W J
R1653 QRE121J-1R0Y C R 1.0kΩ 1/2W J
R1654 QRX029J-4R7 OM R 4.7Ω 2W J
R1656 NRSA02J-123X CH MG R 12kΩ 1/10W J

R1657 NRSA02J-391X CH MG R 390Ω 1/10W J
R1658 NRSA02J-102X CH MG R 1kΩ 1/10W J
R1659 NRSA02J-102X CH MG R 1kΩ 1/10W J
R1660 NRSA02J-103X CH MG R 10kΩ 1/10W J
R1661 QRE121J-271Y C R 270Ω 1/2W J
R1662 QRE121J-271Y C R 270Ω 1/2W J
R1664 NRSA02J-221X CH MG R 220Ω 1/10W J
R1665 NRSA02J-103X CH MG R 10kΩ 1/10W J

R1701 NRSA02J-562X CH MG R 5.6kΩ 1/10W J
R1702 NRSA02J-682X CH MG R 6.8kΩ 1/10W J
R1703 NRSA02J-392X CH MG R 3.9kΩ 1/10W J
R1704 NRSA02J-221X CH MG R 220Ω 1/10W J
R1705 NRSA02J-221X CH MG R 220Ω 1/10W J
R1706 NRSA02J-561X CH MG R 560Ω 1/10W J
R1707 NRSA02J-561X CH MG R 560Ω 1/10W J
R1708 NRSA02J-102X CH MG R 1kΩ 1/10W J

R1709 NRSA02J-472X CH MG R 4.7kΩ 1/10W J
R1710 NRSA02J-472X CH MG R 4.7kΩ 1/10W J
R1711 NRSA02J-472X CH MG R 4.7kΩ 1/10W J
R1712 NRSA02J-472X CH MG R 4.7kΩ 1/10W J
R1713 NRSA02J-472X CH MG R 4.7kΩ 1/10W J
R1714 NRSA02J-472X CH MG R 4.7kΩ 1/10W J
R1715 NRSA02J-221X CH MG R 220Ω 1/10W J
R1716 NRSA02J-221X CH MG R 220Ω 1/10W J

R1718 NRSA02J-561X CH MG R 560Ω 1/10W J
R1719 NRSA02J-102X CH MG R 1kΩ 1/10W J
R1720 NRSA02J-472X CH MG R 4.7kΩ 1/10W J
R1721 NRSA02J-103X CH MG R 10kΩ 1/10W J

! R1723 QRZ9023-270 F R 27Ω 2W J

R1725 NRSA02J-102X CH MG R 1kΩ 1/10W J
R1726 NRSA02J-472X CH MG R 4.7kΩ 1/10W J
R1727 NRSA02J-153X CH MG R 15kΩ 1/10W J

R1728 NRSA02J-102X CH MG R 1kΩ 1/10W J
R1729 NRSA02J-102X CH MG R 1kΩ 1/10W J
R1730 NRSA02J-103X CH MG R 10kΩ 1/10W J
R1731 NRSA02J-472X CH MG R 4.7kΩ 1/10W J
R1736 NRSA02J-823X CH MG R 82kΩ 1/10W J
R1737 NRSA02J-104X CH MG R 100kΩ 1/10W J
R1738 NRSA02J-103X CH MG R 10kΩ 1/10W J
R1739 NRSA02J-103X CH MG R 10kΩ 1/10W J

R1740 NRSA02J-392X CH MG R 3.9kΩ 1/10W J

No. 5601330

AV-21AT

! Symbol No. Part No. Part Name Description Local ! Symbol No. Part No. Part Name Description Local

RESISTOR

R1741 NRSA02J-561X CH MG R 560Ω 1/10W J
R1742 NRSA02J-563X CH MG R 56kΩ 1/10W J
R1746 NRSA02J-103X CH MG R 10kΩ 1/10W J
R1747 NRSA02J-0R0X CH MG R 0.0Ω 1/10W J
R1748 NRSA02J-103X CH MG R 10kΩ 1/10W J
R1749 NRSA02J-472X CH MG R 4.7kΩ 1/10W J
R1771 NRSA02J-821X CH MG R 820Ω 1/10W J
R1772 NRSA02J-821X CH MG R 820Ω 1/10W J

R1791 NRSA02J-221X CH MG R 220Ω 1/10W J
R1792 NRSA02J-221X CH MG R 220Ω 1/10W J
R1793 NRSA02J-221X CH MG R 220Ω 1/10W J
R1794 NRSA02J-221X CH MG R 220Ω 1/10W J
R1795 NRSA02J-221X CH MG R 220Ω 1/10W J
R1796 NRSA02J-103X CH MG R 10kΩ 1/10W J
R1797 NRSA02J-153X CH MG R 15kΩ 1/10W J
R1802 NRSA02J-750X CH MG R 75Ω 1/10W J

R1806 QRE121J-271Y C R 270Ω 1/2W J
R1807 NRSA02J-680X CH MG R 68Ω 1/10W J
R1810 QRG01GJ-560 OM R 56Ω 1W J
R1811 NRSA02J-221X CH MG R 220Ω 1/10W J
R1815 QRE121J-181Y C R 180Ω 1/2W J
R1816 NRSA02J-681X CH MG R 680Ω 1/10W J
R1817 NRSA02J-472X CH MG R 4.7kΩ 1/10W J
R1901 QRF104K-3R9 UNF R 3.9Ω 10W K

R1903 QRL02EJ-683X OM R 68kΩ 2W J
R1921 QRE121J-681Y C R 680Ω 1/2W J
R1922 QRT029J-1R2 MF R 1.2Ω 2W J
R1923 QRM059J-R22 MP R 0.22Ω 5W J
R1926 NRSA02J-222X CH MG R 2.2kΩ 1/10W J
R1928 QRL03EJ-563X OM R 56kΩ 3W J
R1929 QRE121J-822Y C R 8.2kΩ 1/2W J
R1932 QRE121J-564Y C R 560KΩ 1/2W J

R1933 QRE121J-180Y C R 18Ω 1/2W J
R1934 NRSA02J-333X CH MG R 33kΩ 1/10W J
R1936 QRG01GJ-561 OM R 560Ω 1W J
R1941 QRE121J-821Y C R 820Ω 1/2W J
R1942 NRSA02J-122X CH MG R 1.2kΩ 1/10W J
R1943 NRSA02J-473X CH MG R 47kΩ 1/10W J
R1944 NRSA02J-103X CH MG R 10kΩ 1/10W J
R1974 NRSA02J-222X CH MG R 2.2kΩ 1/10W J

R1976 NRSA02J-102X CH MG R 1kΩ 1/10W J
R1977 QRE121J-122Y C R 1.2kΩ 1/2W J
R1978 NRSA02J-473X CH MG R 47kΩ 1/10W J
R1979 QRT02EJ-2R7X OM R 2.7Ω 2W J
R1980 QRL02EJ-103X OM R 10kΩ 2W J

! R1991 QRZ0057-825 C R 8.2MΩ 1W J

CAPACITOR

C1001 QETN1HM-106Z E CAP. 10µ F 50V M
C1002 NCB21HK-103X CH C CAP. 0.01µ F 50V K
C1004 QETN1CM-227Z E CAP. 220µ F 16V M
C1005 QFV71HJ-104Z TF CAP. 0.1µ F 50V J
C1008 QETN1HM-475Z E CAP. 4.7µ F 50V M
C1103 QETN1EM-476Z E CAP. 47µ F 25V M

C1104 NCB21HK-472X CH C CAP. 4700pF 50V K
C1105 NCB21HK-472X CH C CAP. 4700pF 50V K

C1106 NCB21HK-472X CH C CAP. 4700pF 50V K
C1107 NCB21HK-472X CH C CAP. 4700pF 50V K
C1109 NCB21HK-472X CH C CAP. 4700pF 50V K

C1110 NRSA02J-0R0X CH MG R 0.0Ω 1/10W J
C1112 QETN1EM-476Z E CAP. 47µ F 25V M

C1113 NCB21HK-472X CH C CAP. 4700pF 50V K

C1115 NCB21HK-103X CH C CAP. 0.01µ F 50V K
C1116 NCB21HK-103X CH C CAP. 0.01µ F 50V K

C1117 QFV71HJ-224Z TF CAP. 0.22µF 50V J
C1119 QETN1HM-474Z E CAP. 0.47µ F 50V M

C1120 NDC21HJ-121X CH C CAP. 120pF 50V J

C1121 NCB21HK-103X CH C CAP. 0.01µ F 50V K
C1122 NCB21HK-103X CH C CAP. 0.01µ F 50V K

C1162 NDC21HJ-681X CH C CAP. 680pF 50V J

C1301 NCB21HK-123X CH C CAP. 0.012µF 50V K
C1302 QETN1HM-475Z E CAP. 4.7µ F 50V M

C1303 NDC21HJ-100X CH C CAP. 10pF 50V J

C1304 QFV71HJ-474Z TF CAP. 0.47µF 50V J

CAPACITOR

C1305 QETN1HM-474Z E CAP. 0.47µF 50V M
C1306 NCB21HK-103X CH C CAP. 0.01µ F 50V K
C1307 QETN1CM-477Z E CAP. 470µF 16V M
C1308 QETN1CM-107Z E CAP. 100µF 16V M
C1309 NCB21HK-103X CH C CAP. 0.01µ F 50V K

C1310 NDC21HJ-221X CH C CAP. 220pF 50V J

C1311 NCB21HK-103X CH C CAP. 0.01µ F 50V K
C1312 QENC1HM-474Z BP E CAP. 0.47µ F 50V M

C1313 QETN1HM-335Z E CAP. 3.3µF 50V M
C1314 NCB21HK-103X CH C CAP. 0.01µ F 50V K

C1315 QETN1CM-107Z E CAP. 100µF 16V M
C1316 QETN1HM-106Z E CAP. 10µF 50V M
C1317 NCB21HK-473X CH C CAP. 0.047µF 50V K

C1321 NDC21HJ-120X CH C CAP. 12pF 50V J

C1322 NCB21HK-273X CH C CAP. 0.027µF 50V K
C1323 QETN1HM-474Z E CAP. 0.47µF 50V M

C1324 QETN1HM-106Z E CAP. 10µF 50V M
C1325 QENC1HM-106Z BP E CAP. 10µ F 50V M

C1326 NCS21HJ-221X CH C CAP. 220pF 50V J

C1341 QETN1HM-106Z E CAP. 10µF 50V M
C1352 QFZ0097-103 MM CAP. 0.01µF 1250V K

C1354 NDC21HJ-271X CH C CAP. 270pF 50V J
C1355 NDC21HJ-221X CH C CAP. 220pF 50V J
C1356 NDC21HJ-331X CH C CAP. 330pF 50V J

C1357 QETN1AM-477Z E CAP. 470µF 10V M
C1365 QENC1HM-105Z BP E CAP. 1µF 50V M
C1366 QENC1HM-105Z BP E CAP. 1µF 50V M
C1367 QENC1HM-105Z BP E CAP. 1µF 50V M
C1401 QFV71HJ-474Z TF CAP. 0.47µF 50V J
C1402 QFV71HJ-104Z TF CAP. 0.1µF 50V J
C1422 QETN1HM-105Z E CAP. 1µF 50V M

C1423 QCS32HJ-100Z C CAP. 10pF 500V J

C1424 QFLC2AJ-103Z M CAP. 0.01µF 100V J

C1426 QFLC1HJ-102Z M CAP. 1000pF 50V J

C1427 QETN1VM-107Z E CAP. 100µF 35V M
C1428 QEHR1VM-107Z E CAP. 100µF 35V M
C1429 QETN1HM-106Z E CAP. 10µF 50V M

C1430 QFN32AJ-472Z M CAP. 4700pF 100V J

C1433 QEHR1HM-475Z E CAP. 4.7µF 50V M
C1435 QETM1EM-228 E CAP. 2200µ F 25V M

C1436 QFV71HJ-334Z TF CAP. 0.33µF 50V J
C1501 QETN1AM-227Z E CAP. 220µF 10V M
C1502 NCB21HK-103X CH C CAP. 0.01µ F 50V K
C1503 QETN1HM-106Z E CAP. 10µF 50V M
C1523 QTMN1VM-476Z E CAP. 47µF 35V M
C1525 QFZ0200-103 MPP CAP. 0.01µF 1.5kVH ± 3%
C1526 QTMN1EM-337Z E CAP. 330µF 25V M
C1527 QFZ0199-334 MPP CAP. 0.33µF 250V J

C1528 QETN2EM-475Z E CAP. 4.7µF 250V M
C1531 QEZ0203-107 E CAP. 100µ F 160V M
C1552 QETM1VM-108 E CAP. 1000µ F 35V M
C1554 QETN2EM-475Z E CAP. 4.7µF 250V M
C1555 QFLC2AJ-104Z M CAP. 0.1µF 100V J
C1571 QETN1AM-107Z E CAP. 100µF 10V M
C1572 QETN1EM-476Z E CAP. 47µF 25V M
C1581 QFV71HJ-104Z TF CAP. 0.1µF 50V J

C1582 QFZ0199-104 MPP CAP. 0.1µF 250V J
C1651 QTNC1HM-105Z BP E CAP. 1µF 50V M
C1652 QEHR1HM-106Z E CAP. 10µF 50V M
C1653 QETN1HM-474Z E CAP. 0.47µF 50V M
C1654 NCB21HK-104X CH C CAP. 0.1µF 50V K
C1655 QEHQ1VM-228 E CAP. 2200µ F 35V M
C1656 QEHR1EM-477Z E CAP. 470µF 25V M
C1658 QETN1HM-226Z E CAP. 22µF 50V M

C1659 QETN1CM-107Z E CAP. 100µF 16V M
C1663 QEHR1HM-106Z E CAP. 10µF 50V M
C1664 NCB21HK-104X CH C CAP. 0.1µF 50V K
C1665 QEHR1HM-105Z E CAP. 1µF 50V M
C1701 QETN1HM-106Z E CAP. 10µF 50V M
C1705 QETN1CM-477Z E CAP. 470µF 16V M
C1706 NCB21EK-104X CH C CAP. 0.1µF 25V K
C1707 NCB21HK-103X CH C CAP. 0.01µ F 50V K

C1708 QETN1EM-476Z E CAP. 47µF 25V M
C1709 NCB21HK-103X CH C CAP. 0.01µ F 50V K
C1710 QETN1CM-107Z E CAP. 100µF 16V M
C1711 NCB21HK-103X CH C CAP. 0.01µ F 50V K

No. 56013 31

AV-21AT

! Symbol No. Part No. Part Name Description Local

CAPACITOR

C1712 NCB21HK-103X CH C CAP. 0.01µ F 50V K
C1713 NCB21HK-103X CH C CAP. 0.01µ F 50V K

C1714 NDC21HJ-330X CH C CAP. 33pF 50V J
C1715 NDC21HJ-330X CH C CAP. 33pF 50V J
C1716 NDC21HJ-181X CH C CAP. 180pF 50V J
C1717 NDC21HJ-181X CH C CAP. 180pF 50V J

C1718 NCB21HK-103X CH C CAP. 0.01µ F 50V K
C1719 QETN1HM-105Z E CAP. 1µF 50V M

C1720 NCB21HK-103X CH C CAP. 0.01µ F 50V K
C1721 NCB21HK-333X CH C CAP. 0.033µF 50V K

C1722 NDC21HJ-101X CH C CAP. 100pF 50V J
C1724 NDC21HJ-560X CH C CAP. 56pF 50V J
C1728 NDC21HJ-181X CH C CAP. 180pF 50V J
C1729 NDC21HJ-181X CH C CAP. 180pF 50V J

C1730 NCB21HK-103X CH C CAP. 0.01µ F 50V K
C1738 QETN1HM-226Z E CAP. 22µF 50V M

C1744 NCB21HK-103X CH C CAP. 0.01µ F 50V K
C1805 QETN1CM-227Z E CAP. 220µF 16V M
C1806 QETN1CM-477Z E CAP. 470µF 16V M
C1811 QETN1HM-106Z E CAP. 10µF 50V M

C1841 NCB21HK-152X CH C CAP. 1500pF 50V J

! C1901 QFZ9040-104 MF CAP. 0.1µ F AC275V M

C1904 QCZ9078-222 C CAP. 2200pF AC250V M
C1905 QCZ9078-222 C CAP. 2200pF AC250V M

C1907 QCZ9078-222 C CAP. 2200pF AC250V M

C1909 QEZ0199-127 E CAP. 120µ F 400V M

! C1910 QFZ9040-473 MF CAP. 0.047µF AC275V M

C1922 QFLC1HJ-471Z M CAP. 470pF 50V J

C1924 QETN1VM-107Z E CAP. 100µF 35V M

C1926 QFLC1HJ-332Z M CAP. 3300pF 50V J

C1928 NCB21HK-473X CH C CAP. 0.047µF 50V K
C1929 QFP32GJ-223Z PP CAP. 0.022µF 400V J

C1930 QCZ0325-561 C CAP. 560pF 2kV K
C1931 QCZ0325-151 C CAP. 150pF 2kV K
C1932 QCZ0325-151 C CAP. 150pF 2kV K
C1941 QCZ0122-561 C CAP. 560pF 2kV K

C1942 QEZ0420-107 E CAP. 100µ F 160V M
C1945 QEHR1CM-108Z E CAP. 1000µF 16V M
C1946 QEHR1CM-477Z E CAP. 470µF 16V M
C1948 QEHR1VM-108Z E CAP. 1000µF 35V M

C1949 NDC21HJ-471X CH C CAP. 470pF 50V J

C1950 NCB21HK-104X CH C CAP. 0.1µF 50V K
C1971 QETN1HM-475Z E CAP. 4.7µF 50V M
C1976 QETN1HM-105Z E CAP. 1µF 50V M
C1977 QETN1CM-477Z E CAP. 470µF 16V M
C1978 QETN1CM-227Z E CAP. 220µF 16V M
C1979 QETN1CM-107Z E CAP. 100µF 16V M

! C1991 QCZ9079-471 C CAP. 470pF AC250V K

! C1992 QCZ9079-471 C CAP. 470pF AC250V K
! C1993 QCZ9079-102 C CAP. 1000pF AC250V K

TRANSFORMER

! T1522 QQH0069-001 H.V. TRANSF.
! T1921 QQS0050-001 SW TRANSF.

COIL

L1001 QQL244K-8R2Z COIL 8.2µHK
L1101 QQLZ014-2R2 COIL 2.2µ H
L1103 QQL244K-8R2Z COIL 8.2µHK
L1351 QQL244K-470Z COIL 47µHK
L1352 QQL244K-470Z COIL 47µHK
L1353 QQL244K-470Z COIL 47µHK

L1523 QQL342J-2R2Z INDUCTOR
L1551 QQLZ018-380 HEATER CHOKE

L1701 QQL244J-5R6Z COIL
L1941 QQL26AK-820Z CHOKE COIL
L1942 QQL26AK-820Z CHOKE COIL
L1943 QQL26AK-820Z CHOKE COIL

! Symbol No. Part No. Part Name Description Local

DIODE

D1001 MA3330/L/-X CHIP ZENER DIODE
D1102 1SS85-T2 SI DIODE
D1301 MA3091/M/-X CHIP ZENER DIODE
D1302 MA3091/M/-X CHIP ZENER DIODE
D1305 RB100A-T2 SI DIODE
D1341 MA111-X CHIP DIODE
D1342 MA111-X CHIP DIODE
D1351 MA3056/L/-X CHIP ZENER DIODE

D1352 MA3056/L/-X CHIP ZENER DIODE
D1353 MA3056/L/-X CHIP ZENER DIODE
D1354 MA111-X CHIP DIODE
D1355 MA111-X CHIP DIODE
D1356 MA111-X CHIP DIODE
D1421 MA3360/M/-X CHIP ZENER DIODE
D1422 MA3360/M/-X CHIP ZENER DIODE
D1423 1SR124-400A-T2 SI DIODE

D1424 MA111-X CHIP DIODE
D1425 MA111-X CHIP DIODE
D1427 MA3270/H/-X CHIP ZENER DIODE
D1551 RGP10J-TS-T3 SI DIODE
D1552 RH1S-T3 SI DIODE
D1553 MA3091/M/-X CHIP ZENER DIODE
D1554 MA111-X CHIP DIODE
D1555 1SR124-400A-T2 SI DIODE

D1571 MA3075/M/-X CHIP ZENER DIODE
D1581 MA3200/M/-X CHIP ZENER DIODE
D1582 RGP10J-TS-T3 SI DIODE
D1651 MA111-X CHIP DIODE
D1652 MA111-X CHIP DIODE
D1653 MTZJ18A-T2 ZENER DIODE
D1701 MA111-X CHIP DIODE
D1704 L-132XID-T16 LED (RED)

D1705 L-132XND-T16 LED (ORG)
D1706 MA111-X CHIP DIODE
D1707 MA111-X CHIP DIODE
D1731 MA111-X CHIP DIODE
D1791 MA3056/M/-X CHIP ZENER DIODE
D1792 MA3056/M/-X CHIP ZENER DIODE
D1793 MA3056/M/-X CHIP ZENER DIODE
D1794 MA3056/M/-X CHIP ZENER DIODE

D1795 MA3056/M/-X CHIP ZENER DIODE
D1901 G2SBA60 BRIDGE DIODE
D1921 RGP10J-TS-T3 SI DIODE
D1922 MA111-X CHIP DIODE
D1923 MA111-X CHIP DIODE
D1924 MA111-X CHIP DIODE
D1926 MA3056/M/-X CHIP ZENER DIODE
D1927 MA3068/M/-X CHIP ZENER DIODE

D1929 RD12E/B2/-T5 ZENER DIODE
D1930 EG1A-T3 SI DIODE
D1932 MA111-X CHIP DIODE
D1933 RD27E/B2/-T5 ZENER DIODE
D1941 RU3AM-LFC4 SI DIODE
D1942 RU3YX-LFC4 SI DIODE
D1943 RGP10J-TS-T3 SI DIODE
D1945 MA3075/H/-X CHIP ZENER DIODE

D1982 MA111-X CHIP DIODE
D1983 MA111-X CHIP DIODE

TRANSISTOR

Q1102 2SC5083/L-P/-T SI TRANSISTOR
Q1103 DTC124EKA-X DIGI TRANSISTOR
Q1301 2SA1037AK/QR/-X SI TRANSISTOR
Q1302 2SC2412K/QR/-X CHIP TRANSISTOR
Q1351 2SC3271F SI TRANSISTOR
Q1352 2SC3271F SI TRANSISTOR
Q1353 2SC3271F SI TRANSISTOR
Q1401 DTC124ESA-T DIGI TRANSISTOR

Q1402 2SC2412K/QR/-X CHIP TRANSISTOR
Q1521 2SK3065-W SI TRANSISTOR
Q1522 BU808DFI-154Y POWER TRANSISTOR H.OUT
Q1523 2SC2412K/QR/-X CHIP TRANSISTOR
Q1524 2SC2412K/QR/-X CHIP TRANSISTOR
Q1571 2SA1208/ST/Z1-T SI TRANSISTOR

No. 5601332

AV-21AT

! Symbol No. Part No. Part Name Description Local ! Symbol No. Part No. Part Name Description Local

TRANSISTOR

Q1572 2SC2412K/QR/-X CHIP TRANSISTOR
Q1651 2SA1037AK/QR/-X SI TRANSISTOR
Q1652 DTC323TK-X DIGI TRANSISTOR
Q1654 2SC2412K/QR/-X CHIP TRANSISTOR
Q1655 2SC2412K/QR/-X CHIP TRANSISTOR
Q1702 2SC2412K/QR/-X CHIP TRANSISTOR
Q1703 2SC2412K/QR/-X CHIP TRANSISTOR
Q1708 DTC124EKA-X DIGI TRANSISTOR

Q1709 2SA1037AK/QR/-X SI TRANSISTOR
Q1803 2SC1815/YG/-T SI TRANSISTOR
Q1804 2SC2412K/QR/-X CHIP TRANSISTOR
Q1941 2SC2412K/QR/-X CHIP TRANSISTOR
Q1943 DTC114EKA-X CHIP TRANSISTOR
Q1974 2SA966/OY/-T SI TRANSISTOR
Q1975 DTC124EKA-X DIGI TRANSISTOR

IC

IC1301 NN5198K IC
IC1421 AN5539-LF IC
IC1651 LA4287 IC
IC1652 SI-5001X-X IC
IC1701 MN1873287JA IC (MICROCOMPUTER)
IC1702 AT24C08-21FTR IC (MEMORY) (Service)
IC1703 L78LR05E-MA IC (5V REG/RESET)
IC1704 PIC-28143SY IR DETECT UNIT

IC1921 STR-G6653 IC (SW REG)
IC1941 SE115N-LF12 IC
IC1971 BA51W12ST-V5 IC (5V/9V REG)

OTHERS

CM35921-005-H CDS HOLDER

! CP1981 ICP-N75-Y IC PROTECTOR
! CP1982 ICP-N75-Y IC PROTECTOR
! F1901 QMF51E2-3R15J4 FUSE 3.15A

FC1901 CEMG002-001Z FUSE CLIP (x2)
J1002 CEMN075-001 PIN JACK
J1003 QNN0281-003 PIN JACK

J1004 QNN0281-002 PIN JACK
J1005 QNS0165-001 3.5 JACK
K1001 QQR0621-002Z BEADS CORE
K1351 QQR0621-002Z BEADS CORE
K1421 QQR0582-001Z BEADS CORE
K1921 QQR1113-001Z FERRITE BEADS
K1922 QQR1113-001Z FERRITE BEADS
K1923 QQR1114-001Z FERRITE BEADS

K1924 QQR1113-001Z FERRITE BEADS
K1941 QQR1113-001Z FERRITE BEADS
K1942 QQR1113-001Z FERRITE BEADS
K1943 QQR1113-001Z FERRITE BEADS

! LF1901 QQR0527-002 LINE FILTER

PC1701 P1241-04 CDS

! PC1921 PC123F2 PHOTO COUPLER

S1701 QSW0619-003Z PUSH SWITCH VOL+

S1702 QSW0619-003Z PUSH SWITCH VOL­S1703 QSW0619-003Z PUSH SWITCH CH+
S1704 QSW0619-003Z PUSH SWITCH CH­S1705 QSW0619-003Z PUSH SWITCH MENU

! S1901 QSW0750-001 PUSH SWITCH POWER

SF1102 QAX0594-001 SAW FILTER
SF1122 QAX0325-001 SAW FILTER

! SK1351 CE42446-001 CRT SOCKET

TH1901 QAD0119-9R0 P THERMISTOR
TU1001 QAU0185-001 TUNER

! VA1901 ERZV10V621CS VARISTOR

X1301 QAX0500-001Z CRYSTAL
X1302 CE42690-001Z CRYSTAL
X1701 FCR12.0M2S C RESONATOR

LC30114-001C-H LED HOLDER

No. 56013 33

AV-21A T

PACKING

5

4

1

PACKING PARTS LIST

3

3

!

6

!

7

8

2

! Ref.No. Part No. Part Name Description Local

1 GG10056-017A-H PACKING CASE
2 CM47385-00B-H POS/SERIAL LABEL
3 CP11667-00B-H CUSHION ASSY 4 pcs. in 1 set
4 CP30967-003-H POLY BAG
5 RM-C364-1H RIMOCON UNIT
6 CP30966-001-H POLY BAG

! 7 LCT0748-001A-H INST BOOK
! 8 LCT0749-001A-H DIGEST MANUAL

REMOTE CONTROL UNIT PARTS LIST (RM-C364-1H)

! Ref.No. Part No. Part Name Description Local

3139 224 20073 BATTERY COVER

No. 5601334

AV-21AT

No. 56013 35

AV-21A T

VICTOR COMPANY OF JAPAN, LIMITED

TELEVISION RECEIVER DIVISION 1106 Heta, Iwai-city, Ibaraki-prefecture, 306-0698, Japan

No. 5601336

AV21AT-H #3

CTH 0005
CRT