JVC AV-14F3PX(PH) Service Manual

SERVICE MANUAL

COLOR TELEVISION

AV-14F3PX(PH)

AV-14F3PX

AV-14F3PX

BASIC CHASSIS

GA2

+

−

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. 56083 1

No. 56083
Sep. 2000

AV-14F3PX

SPECIFICATIONS

Item Content

Dimensions (W × H × D) 462mm × 340.5mm × 375mm
Mass 10kg
TV RF System CCIR (M) & (N)
Color System NTSC / PAL-M / PAL-N
Sound Multiplex System BTSC (Multi-channel sound)
TV Receiving Channel and Frequency

VHF (VL) Band (02 ~ 06) 54MHz ~ 88MHz

VHF (VH) Band (07 ~ 13) 174MHz ~ 216MHz

UHF Band (14 ~ 69) 470MHz ~ 806MHz

CATV Receiving Channel and Frequency

Low Band (02 ~ 06)

High Band (07 ~ 13)

Mid Band (14 ~ 22)
Super Band (23 ~ 36) (54MHz ~ 804MHz)
Hyper Band (37 ~ 64)

Ultra Band (65 ~ 94, 100 ~ 125)

Sub Mid Band (01, 96 ~ 99)

TV/CATV Total Channel 180 Channels
Intermediate Frequency

VIF Carrier 45.75MHz
SIF Carrier 41.25MHz (4.5MHz)

Color Sub Carrier Frequency NTSC: 3.579545MHz

PAL-M: 3.57561149MHz
PAL-N: 3.58205625MHz

Aerial Input Terminal 75Ω Unbalanced
Power Input Rating: AC110 ~ 240V, 50/60Hz Operating: AC90 ~ 260V, 50/60Hz
Power Consumption 44W
Picture Tube Visible size : 34cm measured diagonally
High Voltage 22.5kV ± 1kV (at zero beam current)
Speaker 5cm × 9 cm Oval type × 2
Audio Output 1.5W+1.5W (Stereo)
Input Video 1Vp-p, 75Ω

Audio (L/R) 500mVrms (−4dBs), High impedance

Output Video 1Vp-p, 75Ω

Audio (L/R) 500mVrms (–4dBs), Low impedance

Headphone Jack Stereo mini jack (3.5ø)
Remote Control Unit RM-C373-1H (Battery size : AA/R06/UM-3 × 2)

Design & specifications are subject to change without notice.

No. 560832

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-14F3PX

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. 56083 3

AV-14F3PX

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 is used to control V/C & DEF 1 chip IC, tuner, etc.

● I

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

automatically.

● Built-in RETURN +.

● Built-in RTC (real-time clock) enables ON/OFF timer settings.

SPECIFIC SERVICE INSTRUCTIONS

DISASSEMBLY PROCEDURE

REMOVING THE REAR COVER

1. Unplug the AC power cord.

2. Remove the 5 screws marked "A" and 2 screws 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
remove the PB stopper "C" from the cabinet.

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

REMOVING THE SPEAKER

● After removing the rear cover.

1. Remove the 2 screws marked "D".

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
its back side.

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 all 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. 560834

FRONT CABINET

SPEAKER

D

CRT SOCKET PWB
(Within MAIN PWB)

MAIN PWB

AV-14F3PX

(×2)

SPEAKER

REAR COVER

D

(×2)

A

(×5)

C

B

(×2)

No. 56083 5

AV-14F3PX

REPLACEMENT OF MEMORY IC

1. MEMORY IC

This TV uses the following memory IC.

Memory IC: IC1704 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 VIDEO STATU key on
the remote control unit simultaneously.
The SERVICE MENU screen will be displayed. (See
Fig. 1.)

2) In the SERVICE MENU, again press the DISPLA Y key
and the VIDEO STATU 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 1/4 key, and set the correct value with the
MENU 2/3 key.
(The selected value will be stored in memory when the
MENU 2/3 key is released.)

4) Press the EXIT key twice to return to the normal screen.

NAME OF REMOTE CONTROL KEYS

(5) Receive channel setting

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

(6) User settings

Check the user setting items in Tables 2-1 and 2-2, 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

PICTURE SOUND
VIDEO STATUS OTHERS
LOW LIGHT HIGH LIGHT
RF AFC CHK
VCO (CW) I2C BUS CTRL

SELECT BY
OPERATE BY

EXIT BY

EXIT

IT

Fig. 1

SYSTEM CONSTANT-I

SYSTEM CONSTANT
VIDEO : 2

AUDIO : MTS
VARI. OUT : NO
GAME : YES
CINEMA : YES

SELECT BY
OPERATE BY

EXIT BY

EXIT

IT

SYSTEM CONSTANT-II

DISPLAY

VIDEO STATUS

EXIT

MENU

DISPLAY

PICTURE
BOOSTER

CLOSED
CAPTION

SLEEP
TIMER

VIDEO

STATUS

COLOUR

SYSTEM

EXIT

CHANNEL

TV/VIDEO

100+

MENU

POWER

1

23

456

78

0

HYPER SURROUND

VOLUME

−

RETURN+

MUTING

+

SYSTEM CONSTANT
CCD : YES

RETURN+ : YES
SURROUND :

✽✽✽✽✽✽✽✽

9

MENU

MENU

MENU

SELECT BY
OPERATE BY

✽✽✽✽✽

Fig. 2

YES

EXIT BY

EXIT

IT

No. 560836

SETTING OF SYSTEM CONSTANT SET

Table 1

Setting item Setting contents Se tting value

AV-14F3PX

VIDEO 2
AUDIO MTS
VARI. OUT NO
GAME YES
CINEMA YES
CCD YES
RETURN+ YES
SURROUND YES

USER SETTING VALUES

● Setting of Function

Setting item Setting value Setting item Setting value

MAIN POWER OFF SLEEP TIMER 0
SUB POWER ON VIDEO STATUS STANDARD
CHANNEL CH 02 CLOSED CAPTION OFF (CC1/T1)
CHANNEL PRESET Refer to OPERATING INSTRUCTIONS COLOR SYSTEM AUTO
VOLUME 10 HYPER SURROUND OFF
TV/VIDEO TV PICTURE BOOSTER OFF
DISPLAY OFF

12
MONO PH. MONO MTS
YES NO
YES NO
YES NO
YES NO
YES NO
YES NO

Table 2-1

● Setting of Menu

Setting item Setting value Setting item Setting value

TINT CENTER ON/OFF TIMER NO
COLOR CENTER CHANNEL SUMMARY Unnecessary to set
PICTURE CENTER SET LOCK CODE Unnecessary to set
BRIGHT CENTER CHILD LOCK OFF
DETAIL CENTER AUTO TUNER SETUP AIR
BASS CENTER NOISE MUTING OFF
TREBLE CENTER BACKGROUND BLACK
BALANCE CENTER CLOSED CAPTION CC1 / T1
MTS STEREO LANGUAGE ENG.
SET CLOCK Unnecessary to set

Table 2-2

No. 56083 7

AV-14F3PX

SERVICE MENU SETTING ITEMS

Table 3

Service menu Setting itemService menu Setting item

PICTURE 1. PICTURE

2. BRIGHT

3. COL. PALM

4. COL. PALN

5. COL. NTSC

6. TINT

7. TV DTL

8. EXT PIC.

9. EXT BRI.

10. EXT COL.

11. EXT TINT

12. EXT DTL

13. P/N KILL

14. Y S CONT

15. TV Y-DL

16. EXT Y-DL

17. WPL SW

18. Y GAMMA

19. P/N G P.

20. COL. L SW

21. COL. LMT.

22. PN C. ATT

23. OFST. SW

24. OFST. B-Y

25. OFST. R-Y

26. C-TOF SW

27. TV T FO

28. TV T Q

29. EXT T FO

30. EXT T Q

31. C-TRAP

32. C-TR. FO

33. C-TRAP Q

34. FIX B/W

35. APA P. FO

36. DC TRAN.

37. B. ST. SW

38. B. ST. PO.

39. ABL GAIN

40. ABL PO.

41. HALF T.

42. DRV G SW

43. NT. COMB

44. COIN DET

45. NOISE L.

46. VCD MODE

47. V AGC SP

48. H POS. 50

49. H BLK. 50

50. V POS. 50

51. V SIZE50

52. V S CR50

53. V LIN. 50

Do not adjust.

Do not adjust.

54. H POS. 60

55. H BLK. 60

56. V POS. 60

57. V SIZE60

58. V S CR60

59. V LIN. 60

60. RF AGC

SOUND 1. NOISE

2. IN LEVEL

3. FH MON.

4. ST VCO

5. PILOT

6. FILTER

7. LOW SEP.

8. HI SEP.

9. 5FH MON.

10. SAP VCO

11. IN GAIN

12. FIL. OFF.

VIDEO STATUS TINT

COLOR
PICTURE
BRIGHT
DETAIL
G DRIVE
B DRIVE
R CUT.
G CUT.
B CUT.

OTHERS 1. OSD HP

2. OSD VP

3. H-CK SW

LOW LIGHT R CUTOFF

G CUTOFF
B CUTOFF

HIGH LIGHT G DRIVE

B DRIVE

RF AFC CHK RF AFC

FINE

VCO (CW) IF VCO (CW) adjustment mode

I2C BUS CTRL I2C BUS

(Fixed to ON state.)

Do not adjust.

Do not adjust.

Do not adjust.

Do not adjust.

Do not adjust.

Do not adjust.

No. 560838

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-14F3PX

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. 56083 9

B

C

AV-14F3PX

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.

VIDEO STATUS
BASS, TREBLE, BALANCE
TINT, COLOR, PICTURE, BRIGHT
DETAIL

Function

Setting value

STANDARD
CENTER

CENTER

MEASURING INSTRUMENT

ADJUSTMENT/CHECK ITEMS

AND FIXTURES

Adjustment/Check item Page

1. DC voltmeter (or Digital voltmeter)

2. Oscilloscope

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

4. Remote control unit

5. TV audio multiplex signal generator

6. Frequency counter

B1 POWER SUPPLY Check 16
IF VCO Adjustment 16
RF AGC Adjustment 16
FOCUS Adjustment 16
DEFLECTION CIRCUIT Adjustment 17
VIDEO/CHROMA CIRCUIT Adjustment 18
VIDEO STATUS Adjustment 21
MTS CIRCUIT (AUDIO CIRCUIT) Adjustment 22
X-RAY PROTECTION Check 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:

● PICTURE..................... For entering/adjusting the setting values (adjustment values) of the VIDEO/CHROMA and DEFLECTION cir-

● SOUND........................ For entering/adjusting the setting values (adjustment values) of the AUDIO circuits.

● VIDEO STATUS .......... For setting the values for CINEMA and GAME.

● OTHERS...................... For setting the values of other items.

● LOW LIGHT................. For setting the values of WHITE BALANCE circuit.

● HIGH LIGHT ................ For setting the values of WHITE BALANCE circuit .

● RF AFC CHK ............... For checking the RF AFC circuit. (Do not adjust.)

● VCO (CW) ................... For adjusting the IF circuit.

● I2C BUS CTRL............. I2C BUS ON/OFF CONTROL. (Fixed to ON.)

cuits.

No. 5608310

AV-14F3PX

3. BASIC OPERATION IN SERVICE MENU

NOTE: In each menu screen, key operation guide will appear

at the bottom, which will help your menu operation.

(1) How to enter SERVICE MENU

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

• To return to the previous screen, press the EXIT key on
the remote control unit.

(2) Selection of Sub Menu Screen

See Fig. 3, menu diagram, on the next page.

1) Press the MENU 1/4 key on the remote control unit to

select an item in the SERVICE MENU screen.

2) Enter the Sub Menu as follows:

● Entering "PICTURE", "SOUND", and "OTHERS"

Sub Menus

Press the MENU 2/3 key in the SERVICE MENU
screen. Then, the Screen A shown in Fig. 3 on the
next page will appear.
In the Screen A, press the MENU 1/4 key to enter
the Sub Menu screen.

● Entering other than above Sub Menus

Press the MENU 2/3 key in the SERVICE MENU
screen. Then, the Sub Menu screen will directly ap­pear.

• To return to the previous screen, press the EXIT key on
the remote control unit.

SERVICE MENU

SERVICE MENU

PICTURE SOUND
VIDEO STATUS OTHERS
LOW LIGHT HIGH LIGHT
RF AFC CHK
VCO (CW) I2C BUS CTRL

SELECT BY
OPERATE BY

EXIT BY

EXIT

SERVICE MENU items

Key Operation Guide

1/4 key: Press to select an item.
2/3 key: Press to enter the SUB MENU screen of the

selected item.

EXIT key:Press to return to the previous screen.

Fig. 1 SERVICE MENU

SERVICE MENU → SUB MENU

PICTURE SOUND
VIDEO STATUS OTHERS
LOW LIGHT HIGH LIGHT
RF AFC CHK
VCO (CW) I2C BUS CTRL

IT

(3) Method of Setting in the Sub Menu Screen

* Once the setting values are set, they are automatically

memorized.

1) PICTURE, SOUND, VIDEO STATUS, OTHERS

1/4 key: Press to select an item in the Sub Menu.
2/3 key: Press to select the value of the selected item.

EXIT key: Press to return to the previous screen.
VIDEO STATUS key: In the VIDEO STATUS sub menu

screen, press to switch between VIDEO STA­TUS-GAME and VIDEO STATUS-CINEMA.

2) LOW LIGHT, HIGH LIGHT

Setting will be done by using the numeral key on the re­mote control unit.

3) RF AFC CHK

Do not adjust.

4) VCO (CW)

Setting will be done by adjusting the CW TRANSF . (T1 11)
on the Main PWB.

5) I2C BUS CTRL

Do not adjust. This item should always be fixed to ON to
normally operate the TV set.

(4) Release of SERVICE MENU

After completing the setting, repeatedly press the EXIT key
until the screen returns to the normal screen.

Fig. 2

SUB MENU: PICTURE

1. PICTURE

✽✽✽✽✽ ✽✽✽✽

SELECT BY
OPERATE BY

✽✽✽

EXIT BY

EXIT

IT

SUB MENU item

Setting Value

1/4 key: Press to select an item.
2/3 key: Press to set the value.

EXIT key:Press to return to the previous screen.

Fig. 2 SUB MENU example (PICTURE)

No. 56083 11

AV-14F3PX

SERVICE MENU AND SUB MENU SCREENS

SERVICE MENU (MAIN MENU)

SERVICE MENU

PICTURE SOUND
VIDEO STATUS OTHERS
LOW LIGHT HIGH LIGHT
RF AFC CHK
VCO (CW) I2C BUS CTRL

SELECT BY
OPERATE BY

EXIT BY

EXIT

IT

SUB MENU: HIGH LIGHT

HIGH LIGHT

✽✽✽ ✽✽✽

EXIT BY

EXIT

IT

SUB MENU: RF AFC CHK

SCREEN A

SELECT BY EXIT BY

EXIT

SUB MENU: SOUND

1. NOISE
STATUS

SELECT BY
OPERATE BY

✽✽✽

✽✽✽✽✽✽✽✽

EXIT BY

EXIT

SUB MENU: PICTURE

1. PICTURE

✽✽✽✽✽ ✽✽✽✽

SELECT BY

IT

OPERATE BY

✽✽✽

EXIT BY

EXIT

IT

SUB MENU: OTHERS

1. OSD HP

SELECT BY

IT

OPERATE BY

✽✽✽

EXIT BY

EXIT

IT

RF AFC ON
FINE

SELECT BY
OPERATE BY

Do not adjust.

SUB MENU: VCO (CW)

TOO HIGH
ABOVE REFERENCE
BELOW REFERE NCE
TOO LOW

SYNC : YES

SUB MENU: I C BUS CTRL

I2C BUS ON

OPERATE BY

2

✽✽✽

EXIT BY

EXIT

EXIT BY

EXIT

EXIT BY

EXIT

IT

SUB MENU: VIDEO STATUS

CINEMA

CINEMA
TINT G DRIVE

COLOR B DRIVE
PICTURE R CUT.
BRIGHT G CUT.
DETAIL B CUT.

SELECT BY

IT

OPERATE BY

✽✽✽ ✽✽✽
✽✽✽ ✽✽✽
✽✽✽ ✽✽✽
✽✽✽ ✽✽✽
✽✽✽ ✽✽✽

EXIT BY

EXIT

IT

Press
VIDEO

STATUS

Key.

GAME
TINT G DRIVE

COLOR B DRIVE
PICTURE R CUT.
BRIGHT G CUT.
DETAIL B CUT.

SELECT BY
OPERATE BY

GAME

✽✽✽ ✽✽✽
✽✽✽ ✽✽✽
✽✽✽ ✽✽✽
✽✽✽ ✽✽✽
✽✽✽ ✽✽✽

EXIT BY

EXIT

IT

SUB MENU: LOW LIGHT

BRIGHT

IT

BRIGHT

✽✽✽

✽✽✽ ✽✽✽

✽✽✽

EXIT BY

EXIT

IT

Fixed to ON state.

Fig. 3

No. 5608312

ADJUSTMENT LOCATIONS

MAIN PWB

ON
TIMER

POWER

VOL-+CH

-

+

AV-14F3PX

FRONT

MENU

DEG

PW

S901

POWER SW

REMOCON
RECEIVER

F901

IC701

T

IC201

MPX

MEMORY

TU001

IC704

IC

VCO

C

T111

S

HV

X

3

1

U

13

B1

HVT

CRT SOCKET PWB
(SOLDER SIDE)

1 Pin TP-91(B1)
2 Pin NC
3 Pin TP-E

(")

TOP

UPPER : FOCUS
LOWER : SCREEN

T

TP-E

U

TP-47B

1

E

CRT EARTH
(BRAIDED ASS'Y)

No. 56083 13

AV-14F3PX

INITIAL SETTING VALUE OF SERVICE MENU

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 "ADJUSTMENTS".

● PICTURE

★ The following four setting items in the video mode and TV mode are linked each other.

Video mode: 8. EXT PIC., 9. EXT BRI., 10. EXT COL. and 11. EXT TINT
TV mode: 1. PICTURE, 2 . BRIGHT, 5. COL. NTSC and 6. TINT
When the setting items in the TV mode are adjusted, the same values will be set to the linking items in the video mode. For example,
if the value of 1. PICTURE is changed, the value of 8. EXT PIC. will also be changed accordingly. (The initial setting values given in
( ) are offset values against the TV mode.)

★ When the four items (Nos. 8, 9, 10 and 11) are adjusted in the video mode, the setting values will be changed independently from

those in the TV mode.

Setting item Variable range Initial setting value

1. PICTURE 000 ~ 127 040

2. BRIGHT 000 ~ 127 064

3. COL. PALM 000 ~ 127 070

4. COL. PALN 000 ~ 127 070

5. COL. NTSC 000 ~ 127 072

6. TINT 000 ~ 127 065

7. TV DTL 000 ~ 063 028

8. EXT PIC. ±025 (±000)

9. EXT BRI. ±025 (+000)

10. EXT COL. ±025 (±000)

11. EXT TINT ±025 (+001)

12. EXT DTL 000 ~ 063 030

13. P/N KILL 000 / 001 001

14. Y S CONT 000 ~ 031 031

15. TV Y-DL 000 ~ 007 001

16. EXT Y-DL 000 ~ 007 002

17. WPL SW 000 / 001 000

18. Y GAMMA 000 / 001 000

19. P/N G P. 000 / 001 000

20. COL. L SW 000 / 001 001

21. COL. LMT. 000 ~ 003 001

22. PN C. ATT 000 ~ 003 001

23. OFST. SW 000 / 001 000

24. OFST. B-Y 000 ~ 015 008

25. OFST. R-Y 000 ~ 015 008

26. C-TOF SW 000 / 001 001

27. TV T FO 000 ~ 003 001

28. TV T Q 000 ~ 003 000

29. EXT T FO 000 ~ 003 000

30. EXT T Q 000 ~ 003 000

Settingitem Variable range Initial setting value

31. C-TRAP 000 / 001 000

32. C-TR. FO 000 ~ 003 002

33. C-TRAP Q 000 ~ 003 000

34. FIX B/W 000 / 001 000

35. APA P. FO 000 ~ 003 001

36. DC TRAN. 000 ~ 007 006

37. B. ST. SW 000 / 001 000

38. B. ST. PO. 000 ~ 007 000

39. ABL GAIN 000 ~ 007 004

40. ABL PO. 000 ~ 007 000

41. HALF T. 000 ~ 002 001

42. DRV G SW 000 / 001 000

43. NT. COMB 000 / 001 001

44. COIN DET 000 ~ 003 001

45. NOISE L. 000 ~ 003 003

46. VCD MODE 000 / 001 000

47. V AGC SP 000 / 001 000

48. H POS. 50 000 ~ 031 007

49. H BLK. 50 000 ~ 007 000

50. V POS. 50 000 ~ 007 000

51. V SIZE50 000 ~ 127 024

52. V S CR50 000 ~ 127 018

53. V LIN. 50 000 ~ 031 004

54. H POS. 60 000 ~ 031 012

55. H BLK. 60 000 ~ 007 000

56. V POS. 60 000 ~ 007 000

57. V SIZE60 000 ~ 127 028

58. V S CR60 000 ~ 127 046

59. V LIN. 60 000 ~ 031 004

60. RF AGC 000 ~ 255 160

: Do not adjust.

No. 5608314

● SOUND

AV-14F3PX

Setting item Variable range Initial setting value

1. NOISE 000 / 001 001

2. IN LEVEL 000 ~ 063 020

3. FH MON. 000 / 001 000

4. ST VCO 000 ~ 063 025

5. PILOT 000 / 001 000

6. FILTER 000 ~ 063 030

: Do not adjust.

● VIDEO STATUS

Setting item Variable range

TINT ±20 ±0 ±0
COLOR ±20 −3 −3
PICTURE ±20 −10 −10
BRIGHT ±20 ±0 ±0
DETAIL ±15 ±0 −5
G DRIVE −99 ~ +50 −22 ±0
B DRIVE −99 ~ +50 −54 ±0
R CUT. ±10 ±0 ±0
G CUT. ±10 ±0 ±0
B CUT. ±10 ±0 ±0

Initial setting value

CINEMA GAME

Setting item Variable range Initial setting value

7. LOW SEP. 000 ~ 063 022

8. HI SEP. 000 ~ 063 023

9. 5FH MON. 000 / 001 000

10. SAP VCO 000 ~ 063 026

11. IN GAIN 000 / 001 000

12. FIL. OFF. ±010 ±000

: Do not adjust.

● OTHERS

Setting item Variable range Initial setting value

1. OSD HP 000 ~ 063 023

2. OSD VP 000 ~ 015 012

3. H-CK SW 000 / 001 000

: Do not adjust.

● LOW LIGHT

Setting item Variable range Initial setting value

R CUTOFF 000 ~ 255 020
G CUTOFF 000 ~ 255 020
B CUTOFF 000 ~ 255 020

● HIGH LIGHT

Setting item Variable range Initial setting value

G DRIVE 000 ~ 255 128
B DRIVE 000 ~ 255 128

● RF AFC CHK

Setting item Variable range Initial setting value

RF AFC ON / OFF ON
FINE −77 ~ +77 xx

: Do not adjust.

● I2C BUS CTRL

Setting item Variable range Initial setting value

I2C BUS ON / OFF ON (Fixed to ON)

: Do not adjust.

No. 56083 15

AV-14F3PX

ADJUSTMENTS

B1 POWER SUPPLY CHECK

Item Test point Adjustment part

Measuring
instrument

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

""

")

""

SUPPLY ● DC [B1

voltmeter connector]

IF VCO ADJUSTMENT

Item Test point Adjustment part

Adjustment ● Signal CW TRANSF.
VCO (CW) Generator (T111)

Measuring
instrument

● Remote

control unit [MAIN PWB]

SUB MENU: VCO (CW)

TOO HIGH
ABOVE REFERENCE
BELOW REFERE NCE
TOO LOW

SYNC : YES

EXIT BY

EXIT

IT

YELLOW

Description

1. Receive a black and white signal (color off). (NTSC)

2. Connect a DC voltmeter between B1 (TP-91) and TP-E (")
(between pins 1 and 3 of the connector B1).

3. Make sure that the voltage is DC134.5 ± 2.0V.

Description

● Under normal conditions, no adjustment is required.

1. Receive any broadcast. (Use a channel without offset fre­quency.)

2. Select the sub menu screen VCO (CW) from the SERVICE
MENU. (More specifically, in the SERVICE MENU, press the
MENU 1/4 key to select VCO (CW) and then press the MENU
2/3 key to enter the sub menu screen VCO (CW) .)

3. Confirm that the color of "TOO HIGH" and "TOO LOW" changes
in yellow as you turn the CW TRANSF. At this time, check that
"SYNC: YES" appears on the screen.

4. Slowly turn the CW TRANSF. until "BELOW REFERENCE"
changes to yellow. Also, at this time, check that "SYNC: YES"
appears on the screen.

5. Press the EXIT key to return to the normal screen.

RF AGC ADJUSTMENT

Item Test point Adjustment part

Adjustment Remote 60. RF AGC
of RF AGC control unit

Measuring
instrument

FOCUS ADJUSTMENT

Item Test point Adjustment part

Adjustment Signal FOCUS VR
of FOCUS generator [In HVT]

Measuring
instrument

Description

1. Receive any broadcast.

2. Select the sub menu screen PICTURE from the SERVICE
MENU.

3. Select 60. RF AGC with the MENU 1/4 key.

4. Press the MUTING key to turn off the color.

5. Press the MENU 2 key to get noise on the screen picture. (The
setting value will be decreased.)

6. Press the MENU 3 key until noise disappears from the screen.

7. Change to other channels and make sure that there is no ir­regularity on the screen picture.

8. Press the MUTING key to turn on the color.

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.

No. 5608316

DEFLECTION CIRCUIT ADJUSTMENT

The setting (adjustment) using the remote control unit is made on the basis of the initial setting values shown on page 14.
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 herein.

AV-14F3PX

Item Test point Adjustment part

Measuring
instrument

Adjustment ● Signal 56. V POS. 60
of generator 57. V SIZE60
V. HEIGHT 58. V S CR60
V. POSITION ● Remote 59. V. LIN. 60
V. LIN. control
V. S CR unit

50. V POS. 50

51. V SIZE50

52. V S CR50

53. V. LIN. 50

Screen size

Screen

size

92%

Picture
size
100%

Description

(60Hz)

1. Receive a cross-hatch signal. (NTSC or PAL-M)

2. Select the sub menu screen PICTURE from the SERVICE
MENU.

3. Select 56. V POS. 60 with the MENU 1/4 key, and confirm that
the setting value is 0.
NOTE: The value of 56. V POS. 60 should be fixed to 0.

4. Confirm the initial setting value of 57. V SIZE60, 58. V S CR60,
and 59. V. LIN. 60.

5. Adjust 57. V SIZE60 and make the vertical screen size 92% of
the picture size, with the MENU 2/3 key.

6. Adjust 59. V. LIN. 60 and 58. V S CR60 to get the best vertical
linearity, with the MENU 2/3 key.

(50Hz)

1. Receive a cross-hatch signal. (PAL-N)

2. In the sub menu screen PICTURE, select 50. V POS. 50, 51. V
SIZE50, 52. V S CR50, and 53. V. LIN. 50 with the MENU 1/4
key, and confirm their initial setting values.

3. Adjust 51. V SIZE 50 and make the vertical screen size 92% of
the picture size, with the MENU 2/3 key.

4. Adjust 53. V. LIN. 50 and 52.V S CR50 to get the best vertical
linearity, with the MENU 2/3 key.

5. Adjust 50. V POS. 50 so that the vertical center line comes
close to the CRT vertical center as much as possible, with the
MENU 2/3 key.

● Readjust V SIZE, V. LIN, V S CR if necessary.

Picture size 100%

Adjustment ● Signal 54. H POS.60
of generator
H. POSITION

● Remote

control
unit

48. H POS.50

(60Hz)

1. Receive a cross-hatch signal. (NTSC or PAL-M)

2. Select the sub menu screen PICTURE from the SERVICE
MENU.

3. Select 54. H POS.60 with the MENU 1/4 key.

4. Confirm the initial setting value of 54. H POS.60.

5. Adjust 54. H POS.60 so that the screen will be horizontally cen-
tered, with the MENU 2/3 key.

(50Hz)

1. Receive a cross-hatch signal. (PAL-N)

2. In the sub menu screen PICTURE, select 48. H POS.50 with
the MENU 1/4 key.

3. Confirm the initial setting value of 48. H POS.50.

4. Adjust 48. H POS.50 so that the screen will be horizontally cen-
tered, with the MENU 2/3 key.

No. 56083 17

AV-14F3PX

VIDEO/CHROMA CIRCUIT ADJUSTMENT

The setting (adjustment) using the remote control unit is made on the basis of the initial setting values shown on pages 14 and

15.
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 herein.

Item Test point Adjustment part

Measuring
instrument

Adjustment ● Signal BRIGHT
of WHITE generator
BALANCE R CUTOFF
(Low light) ● Remote G CUTOFF

control B CUTOFF
unit

SCREEN VR
(In HVT)

REMOTE CONTROL UNIT

H.LINE OFF

12 3

H.LINE ON

G. CUTOFF ( )

B. CUTOFF ( )

B. CUTOFF ( )

G. CUTOFF ( )

R. CUTOFF ( )

R. CUTOFF ( )

4

789

56

Description

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

2. Select the sub menu screen LOW LIGHT from the SERVICE
MENU.

3. Confirm that the value of BRIGHT, R CUTOFF, G CUTOFF,
and B CUTOFF is set to the initial setting value.

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 color is faintly vis­ible.

6. Use keys 4 ~ 9 on the remote control unit and adjust the other
2 colors to where the single horizontal line becomes white.

7. Turn the SCREEN VR to where the single horizontal line glows
faintly.

8. Press the 2 key to stop producing a single horizontal line.

NOTE: The key 3 acts in the same way as the EXIT key.

SUB MENU: LOW LIGHT

R CUTOFF

BRIGHT

BRIGHT

BRIGHT

✽✽✽

✽✽✽ ✽✽✽

✽✽✽

EXIT BY

EXIT

IT

G CUTOFF

B CUTOFF

Adjustment ● Signal G DRIVE
of WHITE generator B DRIVE
BALANCE
(High light) ● Remote

control
unit

REMOTE CONTROL UNIT

12 3

R. DRIVE ( )

R. DRIVE ( )

4

789

56

B. DRIVE ( )

B. DRIVE ( )

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

2. Select the sub menu screen HIGH LIGHT from the SERVICE
MENU.

3. Confirm that the value of G DRIVE and B DRIVE is set to the
initial setting value.

4. Use the keys 5 and 8 or 6 and 9 to produce a white screen.

NOTE: The key 3 acts in the same way as the EXIT key.

SUB MENU: HIGH LIGHT

G DRIVE

HIGH LIGHT

✽✽✽ ✽✽✽

EXIT BY

EXIT

IT

B DRIVE

No. 5608318

AV-14F3PX

Item Test point Adjustment part

Adjustment Remote 2. BRIGHT
of control unit
SUB
BRIGHT

Adjustment Remote 1. PICTURE
of control unit
SUB CONT.

Adjustment Remote
of control unit
SUB
COLOR -I 3. COL. PALM

Measuring
instrument

Description

1. Receive any broadcast.

2. Select the sub menu screen PICTURE from the SERVICE
MENU.

3. Select 2. BRIGHT with the MENU 1/4 key, and confirm its
initial setting value.

4. If the brightness is not the best with the initial set value, make
fine adjustment until you get the best brightness, with the MENU
2/3 key.

1. Receive any broadcast.

2. Select the sub menu screen PICTURE from the SERVICE
MENU.

3. Select 1. PICTURE with the MENU 1/4 key, and confirm its
initial setting value.

4. If the contrast is not the best with the initial set value, make
fine adjustment until you get the best contrast, with the MENU
2/3 key.

[Method of adjustment without measuring instrument]

(PAL-M COLOR)

1. Receive a PAL-M broadcast.

2. Select the sub menu screen PICTURE from the SERVICE
MENU.

3. Select 3. COL. PALM with the MENU 1/4 key , and confirm its
initial setting value.

4. If the color is not the best with the initial set value, make fine
adjustment until you get the best color, with the MENU 2/3
key.

4. COL. PALN

5. COL. NTSC

(PAL-N COLOR)

1. Receive a PAL-N broadcast.

2. In the sub menu screen PICTURE, select 4. COL. PALN with
the MENU 1/4 key, and confirm its initial setting value.

3. If the color is not the best with the initial set value, make fine
adjustment until you get the best color, with the MENU 2/3
key.

(NTSC COLOR)

1. Receive a NTSC broadcast.

2. In the sub menu screen PICTURE, select 5. COL. NTSC with
the MENU 1/4 key, and confirm its initial setting value.

3. If the color is not the best with the initial set value, make fine
adjustment until you get the best color, with the MENU 2/3
key.

No. 56083 19

AV-14F3PX

Item Test point Adjustment part

Measuring
instrument

Adjustment ● Signal TP-47B
of SUB generator TP-E (

""

")

""

COLOR-II [CRT

● Oscillo- SOCKET 3. COL. PALM

scope PWB]

● Remote

control
unit

Y

G

R

W

Cy

Mg

(A)

(−)
0V

(+)

4. COL. PALN

B

Description

[Method of adjustment using measuring instrument]

(PAL-M COLOR)

1. Receive a PAL-M full field color bar signal (75% white).

2. Select the sub menu screen PICTURE from the SERVICE
MENU.

3. Select 3. COL. PALM with the MENU 1/4 key, and confirm
its initial setting value.

4. Connect the oscilloscope between TP-47B and TP-E.

5. Adjust 3. COL. PALM to set the value (A) in the figure to +10V

(W & B), with the MENU 2/3 key.

(PAL-N COLOR)

1. Receive a PAL-N full field color bar signal (75% white).

2. In the sub menu screen PICTURE, select 4. COL. PALN with
the MENU 1/4 key, and confirm its initial setting value.

3. Connect the oscilloscope between TP-47B and TP-E.

4. Adjust 4. COL. PALN to set the value (A) in the figure to +8V

(W & B), with the MENU 2/3 key.

5. COL. NTSC

Adjustment ● Signal 6. TINT
of Generator
SUB TINT-I

● Remote

control
unit

(NTSC COLOR)

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

2. In the sub menu screen PICTURE, select 5. COL. NTSC with
the MENU 1/4 key, and confirm its initial setting value.

3. Connect the oscilloscope between TP-47B and TP-E.

4. Adjust 5. COL. NTSC to set the value (A) in the figure to +8V

(W & B), with the MENU 2/3 key.

[Method of adjustment without measuring instrument]

1. Receive a NTSC color bar signal.

2. Select the sub menu screen PICTURE from the SERVICE
MENU.

3. Select 6. TINT with the MENU 1/4 key, and confirm its initial
setting value.

4. If the tint is not the best with the initial set value, make fine
adjustment until you get the best tint, with the MENU 2/3 key.

No. 5608320

AV-14F3PX

Item Test point Adjustment part

Measuring
instrument

Adjustment ● Signal TP-47B 6. TINT
of generator TP-E (

""

")

""

SUB TINT-II [CRT

● Oscillo- SOCKET

scope PWB]

● Remote

control
unit

Y

G

W

Cy

Mg

R

B

(B)

(−)

0V
(+)

Description

[Method of adjustment using measuring instrument]

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

2. Select the sub menu screen PICTURE from the SERVICE
MENU.

3. Select 6. TINT with the MENU 1/4 key , and confirm its initial
setting value.

4. Connect the oscilloscope between TP-47B and TP-E.

5. Adjust 6. TINT to set the value (B) in the figure to +15V (W &

Mg), with the MENU 2/3 key.

VIDEO STATUS ADJUSTMENT

Item Test point Adjustment part

Setting Remote TINT
of control unit COLOR
VIDEO PICTURE
STATUS BRIGHT

Measuring
instrument

SUB MENU: VIDEO STATUS

CINEMA
TINT G DRIVE

COLOR B DRIVE
PICTURE R CUT .
BRIGHT G CUT .
DETAIL B CUT.

SELECT BY
OPERATE BY

✽✽✽ ✽✽✽
✽✽✽ ✽✽✽
✽✽✽ ✽✽✽
✽✽✽ ✽✽✽
✽✽✽ ✽✽✽

EXIT BY

EXIT

IT

DETAIL
G DRIVE
B DRIVE

R CUT.
G CUT.
B CUT.

Description

NOTE: Do not adjust. Each value should be set to the initial value.

1. Select the sub menu screen VIDEO STATUS-CINEMA from
the SERVICE MENU.

2. Select TINT ~ B CUT. with the MENU 1/4 key, and reset
each value to the initial setting value on page 15, with the
MENU 2/3 key.

3. Press the VIDEO STATUS key on the remote control unit to
select VIDEO STATUS-GAME. (Each time you press the
VIDEO STATUS key, CINEMA and GAME alternates.)

4. Make similar settings as in 2 above.

No. 56083 21

AV-14F3PX

MTS CIRCUIT (AUDIO CIRCUIT) ADJUSTMENT

The setting (adjustment) using the remote control unit is made on the basis of the initial setting values shown on pages 15.

● Do not change the initial setting values of the setting (adjustment) items not listed herein.

Item Test point Adjustment part

Check of Remote 2. IN LEVEL
MTS INPUT control unit
LEVEL

Adjustment ● Signal R OUT 3. FH MON.
of generator [AUDIO OUT] 4. ST VCO
MTS
STEREO ● Frequency
VCO counter

Measuring
instrument

Description

1. Select the sub menu screen SOUND from the SERVICE
MENU.

2. Select 2. IN LEVEL with the MENU 1/4 key, and confirm that
it is set at its initial setting value.

1. Receive a NTSC RF signal (non-modulated sound signal) from
the Antenna terminal.

2. Select the sub menu screen SOUND from the SERVICE
MENU.

3. Select 3. FH MON. with the MENU 1/4 key, and change its
setting value from 0 to 1 with the MENU 2/3 key.

4. Connect the frequency counter to the R OUT terminal of the
AUDIO OUT.

5. Select 4. ST VCO with the MENU 1/ 4 key, and confirm its
initial setting value.

6. Adjust 4. ST VCO so that the frequency counter reads

15.73kHz ± 0.1 kHz, with the MENU 2/3 key.

7. Again select 3. FH MON. with the MENU 1/4 key, and return
its setting value from 1 to 0 with the MENU 2/3 key.

Adjustment ● Signal R OUT 9. 5FH MON.
of generator [AUDIO OUT] 10. SAP VCO
MTS SAP
VCO ● Frequency

counter

Check of Remote 6. FILTER
MTS FILTER control unit

1. Receive a NTSC RF signal (non-modulated sound signal) from
the Antenna terminal.

2. Connect a 1-MΩ resistor across pins 4 and 3 of the MPX con­nector.

3. Select the sub menu screen SOUND from the SERVICE
MENU.

4. Select 9. 5FH MON. with the MENU 1/4 key, and change its
setting value from 0 to 1 with the MENU 2/3 key.

5. Connect the frequency counter to the R OUT terminal of the
AUDIO OUT.

6. Select 10. SAP VCO with the MENU 1/4 key, and confirm its
initial setting value.

7. Adjust 10. SAP VCO so that the frequency counter reads

78.67kHz ± 0.5 kHz, with the MENU 2/3 key.

8. Again select 9. 5FH MON. with the MENU 1/4 key, and re­turn its setting value from 1 to 0 with the MENU 2/3 key.

1. Select the sub menu screen SOUND from the SERVICE
MENU.

2. Select 6. FILTER with the MENU 1/4 key, and confirm that it
is set at its initial setting value.

No. 5608322

AV-14F3PX

Item Test point Adjustment part

Adjustment ● TV audio L OUT 7. LOW SEP.
of multiplex R OUT 8. HI SEP.
MTS signal [AUDIO OUT]
SEPARA- generator
TION

Measuring
instrument

● Oscillo-

scope

L-Channel

(1 cycle)

R-Channel

Crosstalk portion

Minimum

■ X-RAY PROTECTION CHECK

Item Test point Adjustment part

Measuring
instrument

Description

1. Input a stereo L signal (300Hz) from the TV audio multiplex
signal generator to the Antenna terminal. (NTSC)

2. Connect the oscilloscope to the L OUT terminal of the AUDIO
OUT, and display one cycle portion of the 300Hz signal as
shown in the figure.

3. Connect the oscilloscope to the R OUT terminal of the AUDIO
OUT, and increase the voltage sensitivity of the oscilloscope.

4. Select the sub menu screen SOUND from the SERVICE
MENU.

5. Select 7. LOW SEP. with the MENU 1/4 key, and confirm its
initial setting value.

6. Adjust 7. LOW SEP. so that the peak-to-peak level of the 300Hz
signal becomes minimum, with the MENU 2/3 key.

7. Change the input signal to 3kHz, and similarly adjust for 8. HI

SEP. by repeating steps 2 to 6.

Description

Check of Pins 1 and 3
X-RAY
PROTEC- [X Connector
TION on MAIN

PWB]

X-RAY PROTECTOR

R563

A

R562

FR561

+

C561

D562

MAIN PWB

123

X

15.0kΩ 1% 1/4W

D561

● Prepare the following resistor.

15.0kΩ ±1% 1/4W

1. Turn on the power and receive any signal.

2. Connect the resistor between pins 1 and 3 of the X connector
on the Main PW Board.

3. Make sure that the picture disappears.

4. Unplug the AC power cord.

5. Disconnect the resistor from the X connector.

6. Plug the AC power cord and make sure that the picture ap­pears normally.

TO HVT

X-Ray Protector Operation:

Normally the voltage at point "A" does not exceed the Zener volt­age of D562. (The voltage at point "A" will be determined by divid­ing the voltage from HVT (FBT) by R562 and R563.)
When you connect a resistor of 15.0kΩ or less in parallel with
R562, the voltage at point "A" is increased, D562 turns ON, and
the X-ray protection circuit is activated. Once it is activated, you
need to unplug the AC power cord to restore the X-ray protection
circuit.

No. 56083 23

AV-14F3PX

PURITY, CONVERGENCE ADJUSTMENT

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. 5608324

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-14F3PX

(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 periphery. (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 6 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

RED
GREEN
BLUE

BLUE
GREEN
RED

Fig. 3

No. 56083 25

AV-14F3PX

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

X-ray protection

Operation of X-ray protection cir­cuit.

3. Self-check indicating function

When an abnormality has been detected at about 5 seconds
after the power is turned on, the SUB POWER is turned off
immediately and the ON TIMER LED flashes.

Method of detection

The microcomputer detects the
possible abnormality at 1-sec.
intervals.
If NG state is detected for more
than 1 ms, the microcomputer
judges that there is an abnormal­ity.

DITTO

DITTO

After about
5 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

DITTO

Detection of
an abnormality

Flashing ON TIMER LED

SUB-POWER OFF

[ Indication by the LED ]

Item LED flashing intervals Priority of detection

Over-current protection/X-ray protection At 0.5-second intervals 1

CRT NECK protection At 1-second intervals 2

No. 5608326

AV-14F3PX

VICTOR COMPANY OF JAPAN, LIMITED

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

No. 5608336

AV14F3PHPXSK #3

CTH 0009
CRT