JVC AV-14FMG4/G, AV-14FMG4/S, AV-14FMT4/G Service Manual

YA148200411

SERVICE MANUAL

FLAT COLOUR TELEVISION

AV-14FMG4/G,
AV-14FMG4
AV-14FMT4

/S,

/G

BASIC CHASSIS

CW

[AV-14FMT4/G]

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

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

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

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

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28

[AV-14FMG4/G]
[AV-14FMG4/S]

TABLE OF CONTENTS

COPYRIGHT © 2004 Victor Company of Japan, Limited

No.YA148

2004/11

SPECIFICATION

Items

Dimensions (W × H × D) 46.2cm × 34.05cm × 37.5cm

Mass 10kg

TV RF System B, G, I, D, K, M

Colour System TV Mode

Video Mode

Teletext system

Receiving Frequency VHF Low

VHF High

Intermediate Frequency VIF 38.0MHz

Colour Sub Carrier Frequency 4.43MHz (PAL), 4.40MHz/4.25MHz (SECAM), 3.58MHz/4.43MHz (NTSC)

Aerial Input Terminal 75Ω unbalanced, coaxial

Power Input AC110V ~ AC240V, 50Hz / 60Hz

Power Consumption 65W (Max.) / 48W (Avg.)

Picture Tube A34KPU02XX

Screen Size Visible size : 34.0cm (Diagonal) / 28.7cm × 21.7cm (H × V)

High Voltage 22.5kV±1.5kV (at zero beam current)

Speaker 5cm × 9cm, Oval type × 1

Audio Output 3W

Video / Audio Input
[1/2]

Video / Audio Output Video

Headphone 3.5mm stereo mini jack × 1

Remote Control Unit RM-C1261-2H

Video [1/2]
Audio [1/2]

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

46.25MHz ~ 168.25MHz (AU0 ~ S10)

175.25MHz ~ 463.25MHz (E5 ~ S41)

UHF

471.25MHz ~ 863.25MHz (E21 ~ CHINA 57)

CATV

Mid : X ~ Z, S1 ~ S10
Super: S11 ~ S20
Hyper: S21 ~ S41

SIF D/K: 31.5MHz (6.5MHz)

I: 32.0MHz (6.0MHz)
B/G: 32.5MHz (5.5MHz)
M: 33.5MHz (4.5MHz)

14-inch, aspect ratio 4:3, conventional type, tinted

1V(p-p), negative sync, 75Ω, RCA pin jack × 2
500mV(rms) (-4dBs ), high impedance, RCA pin jack × 2

1V(p-p), 75Ω, RCA pin jack × 1

Audio

500mV(rms)(-4dBs), Low impedance (400Hz when modulated 100%), RCA pin jack × 1

(AA/R06/UM-3 battery × 2)

AV-14FMG4/G AV-14FMG4/S AV-14FMT4/G

---

Contents

FLOF (Fastext)
WST (World Standard Text)

RM-C1260-2H

(AA/R06/UM-3 battery × 2)

Design & specifications are subject to change without notice.

1-2 (No.YA148)

SECTION 1

PRECAUTION

1.1 SAFETY PRECAUTIONS

(1) The design of this product contains special hardware,

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

(2) Alterations of the design or circuitry of the products should

not be made. Any design alterations or additions will void
the manufacturer's warranty and will further relieve the
manufacturer of responsibility for personal injury or
property damage resulting therefrom.

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

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

having such features are identified by shading on the
schematics and by ( ) 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 the LIVE side GND and ISOLATED (NEUTRAL)
side GND or EARTH side GND at the same time with a
measuring apparatus (oscilloscope etc.). If above note will
not be kept, a fuse or any parts will be broken.

(5) If any repair has been made to the chassis, it is

recommended that the B1 setting should be checked or
adjusted (See B1 POWER SUPPLY check).

(6) The high voltage applied to the picture tube must conform

with that specified in Service manual. Excessive high
voltage can cause an increase in X-Ray emission, arcing
and possible component damage, therefore operation
under excessive high voltage conditions should be kept to
a minimum, or should be prevented. If severe arcing
occurs, remove the AC power immediately and determine
the cause by visual inspection (incorrect installation,
cracked or melted high voltage harness, poor soldering,
etc.). To maintain the proper minimum level of soft X-Ray
emission, components in the high voltage circuitry
including the picture tube must be the exact replacements
or alternatives approved by the manufacturer of the
complete product.

(7) Do not check high voltage by drawing an arc. Use a high

voltage meter or a high voltage probe with a VTVM.
Discharge the picture tube before attempting meter
connection, by connecting a clip lead to the ground frame

and connecting the other end of the lead through a 10kΩ

2W resistor to the anode button.

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

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

(9) Isolation Check (Safety for Electrical Shock Hazard)

After re-assembling the product, always perform an
isolation check on the exposed metal parts of the cabinet
(antenna terminals, video/audio input and output terminals,
Control knobs, metal cabinet, screw heads, earphone jack,
control shafts, etc.) to be sure the product is safe to operate
without danger of electrical shock.

a) Dielectric Strength Test

The isolation between the AC primary circuit and all metal
parts exposed to the user, particularly any exposed metal
part having a return path to the chassis should withstand a
voltage of 3000V AC (r.m.s.) for a period of one second. (.
. . . Withstand a voltage of 1100V AC (r.m.s.) to an
appliance rated up to 120V, and 3000V AC (r.m.s.) to an
appliance rated 200V or more, for a period of one second.)
This method of test requires a test equipment not generally
found in the service trade.

b) Leakage Current Check

Plug the AC line cord directly into the AC outlet (do not use
a line isolation transformer during this check.). Using a
"Leakage Current Tester", measure the leakage current
from each exposed metal part of the cabinet, particularly
any exposed metal part having a return path to the chassis,
to a known good earth ground (water pipe, etc.). Any
leakage current must not exceed 0.5mA AC (r.m.s.).
However, in tropical area, this must not exceed 0.2mA AC
(r.m.s.).

Alternate Check Method

Plug the AC line cord directly into the AC outlet (do not
use a line isolation transformer during this check.). Use

an AC voltmeter having 1000Ω 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.).

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

0.15 F AC-TYPE

PLACE THIS PROBE

1500 10W

GOOD EARTH GROUND

ON EACH EXPOSED
ME TAL PAR T

(No.YA148)1-3

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

2.1 FEATURES

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

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

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

• With AUDIO/VIDEO input terminals.

2

C bus control utilizes single chip ICs.

•I

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

• Built-in OFF TIMER & RETURN +.

2.2 MAIN DIFFERENCE LIST

Items AV-14FMG4/G AV-14FMG4/S AV-14FMT4/G

MAIN PWB ASS'Y SCW-1329A-H2 SCW-1330A-H2 SCW-1327A-H2

FRONT CABINET ASS'Y LC10831-039A-H ← LC10831-040A-H
REMOTE CONTROL UNIT RM-C1261-2H ← RM-C1260-2H

POWER CORD QMPR340-165-K2 QMPR650-165-JC QMPR340-165-K2

1-4 (No.YA148)

2.3 FUNCTIONS

 REMOTE CONTROL UNIT

RM-C1261-2H [AV-14FMG4/G, AV-14FMG4/S]

1

2

11

3

4

5

12

6

7
8

9

13

14

15

16

10

17

SOUND SYSTEM key

1

COLOUR SYSTEM key

2

FAVORITE CHANNEL keys

3

TV / VIDEO key

4

PICTURE MODE key

5

Not used

6

OFF TIMER key

7

RETURN + key

8

DISPLAY / BACK key

9

CHANNEL (-/+) keys

10

POWER key

11

Number keys

12

-/-- key

13

14

MENU(OK) key

15

MENU ( / , / ) keys

16

MUTING key

17

VOLUME (-/+) keys

RM-C1260-2H [AV-14FMT4/G]

1

2

3

4

5

6

7

8

9

10
11

17)

12
13
14
15
16

17

18

19

20

21

22

23
24
25
26

SOUND SYSTEM key

1

COLOUR SYSTEM key

2

FAVORITE CHANNEL keys

3

DISPLAY BACK key

4

MENU ( / , / ) keys

5

TEXT key

6

7

MENU (OK) key

8

PICTURE MODE key

9

OFF TIMER key

RETURN + key

10

CHANNEL (-/+) keys

11

INDEX key

12

MODE key

13

REVEAL key

14

Not used

15

16

STORE key

POWER key

17

18

TV / VIDEO key

19

MUTING key

20

Number keys

-/-- key

21

22

VOLUME (-/+) keys

HOLD key

23

SUB PAGE key

24

25

CANCEL key

SIZE key

26

(No.YA148)1-5

 FRONT PANEL CONTROLS

 REAR TERMINAL

VIDEO AUDIO

IN (VIDEO-2)

1

HEADPHONE jack

1

IN (VIDEO-2) : VIDEO

2

IN (VIDEO-2) : AUDIO

3

MENU (OK) button

4

CHANNEL (-/+) buttons

5

3

2

3

MENU

OK

4

5

6

7

6

VOLUME (-/+) buttons

7

Remote control sensor

8

TIMER lamp

9

POWER lamp

10

MAIN POWER button

8

9

10

VIDEO-1 INPUT TERMINAL

VIDEO-1

INPUT

1 2 4

OUTPUT

VIDEO

AUDIO

VIDEO

1

AUDIO

2

OUTPUT TERMINAL

VIDEO

3

4

AUDIO

5

Aerial input terminal

5

1-6 (No.YA148)

2.4 MAIN CPU [MAIN PWB : IC701] PIN FUNCTION

Pin
no.

1VssP2 -GND
2 VssC4 - GND
3 V1.8C4 I 1.8V (Digital)
4 V3.3A3 I 3.3V
5 VrefP_Sdac I 3.3V (Positive)
6 VrefN_Sdac - GND
7 VrefP_Sdac I 3.3V (Negative)
8 VrefN_Sdac - GND

9 VrefP_Sdac I 3.3V (Positive)
10 XtalIn I 24.576MHz for system clock
11 XtalOut O 24.576MHz for system clock
12 VssA1 - GND
13 NECK I V-guard input/ I/O switch
14 CONT I 1.8V regulator control
15 V5P1 I +5V
16 Ph2 - Phase-2 filter
17 Ph1 - Phase-1 filter
18 Gnd1 - GND
19 SecPll - SECAM PLL decoupling
20 Dec8G - Bandgap decoupling
21 EW O East-West drive output
22 VDRB- O Vertical drive B output
23 VDRA+ O Vertical drive A output
24 Vif1 I Video IF input 1
25 Vif2 I Video IF input 2
26 Vsc - Vertical sawtooth capacitor
27 Iref I Reference current input
28 GndIF - GND
29 Sif1 I Sound IF input 1
30 Sif2 I Sound IF input 2
31 AGC O Tuner AGC output
32 EHT I EHT/overvoltage protection input
33

34 L3 I Audio-L3 input (left signal)
35 R3 I Audio-R3 input (right signal)
36 L-OUT O Audio L output
37 R-OUT O Audio R output
38 DecsDem - Decoupling sound demodulator
39

40 Gnd2 - GND
41 PllIf - IF-PLL loop filter
42 SifAgc - AGC sound IF
43 IfVo/FmRo/DvbO O Not used
44 NC O Not used
45 V8AudioSwitches I 8V
46 AgcSsif - AGC capacitor second sound IF
47 V5P2 I 5V
48 V-OUT O Video output
49 L1 I Audio-L1 input
50 R1 I Audio-R1 input
51 V3 I Video V3 input
52 C4 I Not used
53 Audio2InL I Not used
54 Audio2InR I Not used
55 V2/Y I Video V2 input
56 L2 I Audio L2 input (Left signal)
57 R2 I Audio R2 input (right signal)
58 Y3/Cvbs I S-Video Y1 input
59 C1 I S-Video C1 input
60 AudioLsL O
61 AudioLsR O
62 HP-L O Headphone L
63 HP-R O Headphone R

Pin name I/O Function

Ssif/RefIn/Avl/RefOut

QssO/AmO/AudeEm

O

Automatic Volume Levelling/ sound IF input /
subcarrier reference output / external reference
signal input for I signal mixer for DVB operation

O QSS intercarrier output / AM output /

deemphasis / (front-end audio out)

Audio L output for audio power amplifier
Audio R output for audio power amplifier

Pin
no.

64 CVBSO/PIP O CVBS / PIP output
65 SVM O Scan velocity modulation output
66 FbiSo I Flyback input/sandcastle output
67 Hout O Horizontal output
68 VssComb - GND
69 V5Comb I 5V
70 Vin/R2/Pr I PIP R input
71 Uin/B2/Pb I PIP B input
72 Yin/G2/Y I PIP G input
73 Ysync I Not used
74 Yout O Not used
75 Uout/INSSW2 I YUV insertion input
76 NC O Not used
77 INSSW3 I YUV insertion input
78 R3/Pr I Component PR input (Video-2)
79 G3/Y I Component Y input (Video-2)
80 B3/Pb I Component PB input (Video-2)
81 Gnd3 - GND
82 V5P3 I 5V
83 BCL I Beam current limiter input
84 BLKIN I Black current input
85 Rout O R output
86 Gout O G output
87 Bout O B output
88 V3.3A1 I 3.3V
89 RefAdN - GND
90 V3.3RefAdP I 3.3V (Positive)
91 RefAd I 3.3/2V
92 GndA - GND
93 V1.8A I 1.8V
94 V3.3A2 I 3.3V
95 VssADC - GND
96 V1.8ADC I 1.8V
97 REMOTE I Remote control
98 PW_LED I POWER LED control

99 P11/TO I POWER LED control
100 V1.8C2 I 1.8V
101 VssC2 - GND
102
103
104 VER_PROTECT O X-ray protect
105 S_REDUCE O Sound control
106 P00/I2SDI1 O Not used
107 POWER O SUB POWER control
108 SCL1 I I2C bus clock
109 SDA1 I/O I2C bus data
110 V3.3P I 3.3V
111 ROTATION O ROTATION
112 3.58/OTHER O NTSC 3.58 detection
113 A_MUTE O Audio muting
114 4.5/OTHER O NTSC 4.43 detection
115 PROT I Protect
116 ECO_IN I ECO sensor level detection
117 V1.8C1 I 1.8V (Digital)
118 DecV1V8 I 1.8V
119 KEY_IN I Key scan data
120 VDO-DET I Video DET input
121 VSSC1+P1 - Digital GND
122 P24/PWM3 I S-Video DET input
123 P25/PWM4 O GTVA_reset
124 V1.8C3 I 1.8V (Digital)
125 VssC3 - GND
126 P12/Int2 I External interrupt
127 SDA0 I/O I2C bus data (for memory)
128 SCL0 I I2C bus clock (for memory)

Pin name I/O Function

COMPONENT-PIP
COMB_SW_NT3.5/OTHER

- Not used

- Not used

(No.YA148)1-7

SECTION 3

DISASSEMBLY

3.1 DISASSEMBLY PROCEDURE

3.1.1 REMOVING THE REAR COVER

• Unplug the power cord.
(1) Remove the 4 screws [A], 1 screw [B] and 2 screws [C] as

shown in Fig.1.

(2) Withdraw the REAR COVER toward you.

CAUTION:

When reinstalling the rear cover, carefully push it inward after
inserting the MAIN PWB into the REAR COVER groove.

3.1.2 REMOVING THE MAIN PW BOARD

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

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

3.1.3 REMOVING THE SPEAKER

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

SPEAKER.

3.1.4 CHECKING THE MAIN PW BOARD

• To check the back side of the MAIN PWB.
(1) Pull out the MAIN PWB. (Refer to REMOVING THE MAIN

PW BOARD).

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

its back side.

CAUTIONS:

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

and other connectors are properly connected.

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

connector on the MAIN PWB.

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

connector on the MAIN PWB.

3.1.5 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.

1-8 (No.YA148)

PICTURE TUBE

FRONT CABINET

SPEAKER

MAIN PWB
(CRT SOCKET PWB)

D

(x2)

FBT

SPEAKER

MAIN PWB

D

(x2)

REAR COVER

A

(x4)

B

Fig.1

C

(x2)

(No.YA148)1-9

3.2 REPLACEMENT OF MEMORY IC

3.2.1 MEMORY IC

This TV uses the following memory IC.

Memory IC: IC702 on MAIN PWB

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

3.2.2 PROCEDURE FOR REPLACING MEMORY IC

1. Power off

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

2. Replacing the memory IC

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

3. Power on

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

4. Check and setting of SYSTEM CONSTANT SET:

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

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

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

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

(3) Check whether the setting values of the SYSTEM

CONSTANT SET are the same as those indicated in
Table 1.
If the value is different, select the setting item with the
MENU [] / [] 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).

6. User setting

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

7. Setting of SERVICE MENU

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

SERVICE MENU

SERVICE MENU

1. IF

3. AUDIO

5. VSM W/B

7. PLUG & PLAY (ON)

1-7 : SELECT DISPLAY : EXIT

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

2. V/C

4. DEF

6. S TATUS

Fig.1

SYSTEM CONSTANT-1

SYSTEM CONSTANT SET 1

SYSTEM
COMB
TILT
SUPER BASS
TEXT
LANGUAGE



: SEL  : OPE

SYSTEM CONSTANT-2

SYSTEM CONSTANT SET 2

SOUND
BILINGUAL
BLUE BACK MUTE
COLOUR AUTO
ECO SENSOR

: SEL  : OPE



SYSTEM CONSTANT-3

SYSTEM CONSTANT SET 3

SURROUND

: SEL  : OPE



MULTI
NO
NO
NO
SINGLE
ERAPF

DISP : EXIT

MONO
NO
NO
YES
NO

DISP : EXIT

NO
NOPICTURE BOOSTER
NOCOMPONENT
NOPIP
NOS INPUT

DISP : EXIT

PICTURE MODE

DISPLAY / BACK

MENU

1-10 (No.YA148)

NAME OF REMOTE CONTROL KEYS

MENU OK
MENU

MENU
MENU

Fig.2

3.2.3 FACTORY SETTING VALUE

 SETTING OF SYSTEM CONSTANT SET

Setting item Setting content

Setting value

AV-14FMG4/S AV-14FMT4/GAV-14FMG4/G

SYSTEM

COMB

TILT

SUPER BASS

TEXT

LANGUAGE

SOUND

BILINGUAL

BLUE BACK MUTE

COLOUR AUTO

ECO SENSOR

SURROUND

PICTURE BOOSTER

COMPONENT

PIP

S INPUT

MULTI TRIPLE PAL THAI

YES NO

YES NO

YES NO

SINGLE NO PAT

E/R/A/P/F

STEREO PB MONO

YES NO

YES NO

YES NO

YES NO

YES NO

YES NO

YES NO

YES NO

YES NO

MULTI

NO

NO

NO

NO

NO

E/R/A/P/F

MONO

NO

NO YES NO

YES

NO

NO

NO

NO

NO

NO

SINGLE

Table 1

(No.YA148)1-11

 SETTING OF BASIC FUNCTIONS

Setting item Setting value

POWER Off

SUB POWER On

VOLUME 15

COLOR SYSTEM PAL

SOUND SYSTEM B/G

PICTURE MODE (VSM) BRIGHT

OFF TIMER OFF

CHANNEL POSITION PR1

Table 2

 SETTING OF MENU SCREEN

Setting item Setting value

INPUT TV

VNR AUTO

AUTO SHUTOFF OFF

CHILD LOCK OFF

BLUE BACK ON

AUTO PROGRAM

EDIT / MANUAL

LANGUAGE ENG

WHITE BALANCE COOL

TEXT LANGUAGE GROUP-4 [AV-14FMT4/G]

TINT Centre

COLOUR Centre

BRIGHT Centre

CONT Maximum

SHARP Centre

AI VOLUME ON

FAVORITE CH RED PR01

FAVORITE CH GREEN PR02

FAVORITE CH YELLOW PR03

FAVORITE CH BLUE PR04

Refer to OPERATING INSTRUCTIONS

Refer to OPERATING INSTRUCTIONS

Table 3

 SERVICE MENU SETTING ITEMS

Setting item Setting value

1. IF 1. VCO

2. DELAY POINT

2. V/C 1. SCREEN DATA

2. CUTOFF(B/G)

3. WDR(R/G/B)

4. BRIGHT(TV/VDO 1/2)

5. CONT(TV/VDO 1/2)

6. COLOUR(TV/VDO1/2)

7. TINT(TV/VDO 1/2)

8. SHARP [Do not adjust]

9. Y DELAY [Do not adjust]

10. TINT DVD [Do not adjust]

11. AMP T. SHARP

3. AUDIO
[Do not adjust]

4. DEF 1. V-SHIFT

5. VSM W/B
(BRIGHT/STANDARD/SOFT)

(COOL/WARM/NORMAL)

6. STATUS
[Display only]

7. PLUG & PLAY(ON)
[Display only]

1. DCXO ADJ

2. NICAM lower ERRLIM

3. NICAM upper ERRLIM

4. A2 ID THR

5. MENU EQUALIZER

2. V-SLOPE

3. V-SIZE

4. H-CENT

5. H-SIZE

6. TRAPEZ

7. EW-PIN

8. COR-UP

9. COR-LO

10. ANGLE

11. BOW

12. V-S.CR

13. V-LIN

14. V-ZOOM

15. V-SCROLL

1. BRIGHT

2. CONT

3. COLOUR

4. SHARP

5. HUE

1. R DRIVE

2. G DRIVE

3. B DRIVE

1-12 (No.YA148)

Table 4

3.3 REPLACEMENT OF CHIP COMPONENT

3.3.1 CAUTIONS

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

3.3.2 SOLDERING IRON

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

3.3.3 REPLACEMENT STEPS

1. How to remove Chip parts

2. How to install Chip parts

[Resistors, capacitors, etc.]

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

alternately melt the solder at each end.

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

[Transistors, diodes, variable resistors, etc.]

(1) Apply extra solder to each lead.

SOLDER

SOLDER

[Resistors, capacitors, etc.]

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

(2) Grasp the chip part with tweezers and place it on the

solder. Then heat and melt the solder at both ends of the
chip part.

[Transistors, diodes, variable resistors, etc.]

(1) Apply 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.

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

alternately melt the solder at each lead. Shift and remove
the chip part.

NOTE :

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

A

B

C

(4) Then solder leads B and C.

A

B

C

(No.YA148)1-13

SECTION 4

ADJUSTMENT

4.1 ADJUSTMENT PREPARATION

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

equipment and parts as given below.

(2) Adjustment with the remote control unit is made on the basis of the initial setting values, however, the new setting

values used for setting the screen to its optimum condition may differ from the initial settings.

(3) Make sure that AC power is turned on correctly.
(4) Turn on the power for the set and test equipment before use, and start the adjustment procedures after waiting at least 30

minutes.
(5) Unless otherwise specified, prepare the most suitable reception or input signal for adjustment.
(6) Never touch any adjustment parts, which are not specified in the list for this variable resistors, transformers, trimmer capacitors,

etc.

4.2 PRESETTING BEFORE ADJUSTMENT

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

 User mode setting position

Setting item Setting value

PICTURE MODE (VSM) BRIGHT

TINT, COLOUR, BRIGHT,SHARP Centre

CONT Maximum

VNR OFF

4.3 MEASURING INSTRUMENT AND FIXTURES

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

4.4 ADJUSTMENT ITEMS

 B1 VOLTAGE
 FOCUS ADJUSTMENT
 IF CIRCUIT ADJUSTMENTS

• IF VCO adjustment

• DELAY POINT (AGC TAKE-OVER) adjustment
 VIDEO CIRCUIT ADJUSTMENTS

• WHITE BALANCE (Low light) adjustment

• WHITE BALANCE (High light) adjustment

• SUB BRIGHT adjustment

• SUB CONTRAST adjustment

• SUB COLOUR 1 adjustment

• SUB COLOUR 2 adjustment

• SUB TINT 1 adjustment

• SUB TINT 2 adjustment

 DEFLECTION CIRCUIT ADJUSTMENTS

• V.SLOPE adjustment

• V.POSITION adjustment

• V.HEIGHT adjustment

• H.POSITION adjustment

• V. LINEARITY adjustment

• H. PARALLEL adjustment

• H.BOW adjustment

 VSM PRESET SETTING
 PURITY AND CONVERGENCE ADJUSTMENTS

• PURITY adjustment

• STATIC CONVERGENCE adjustment

• DYNAMIC CONVERGENCE adjustment

1-14 (No.YA148)

4.5 ADJUSTMENT LOCATIONS

POWER
CORD

DEG COIL

MAIN PWB ASS'Y

POWER SW

S901

PW

DEG

S804 S802

S805 S803 S801

1

T

6

IC701

J807

J806

41

CN00S

IC702

U

GND 5V GND B1

41

HV

14

HVT

FRONT

DEF
YOKE

J801 J802

C

I2C

CN00C

1. 5V

2. SCL0

3. SDA0

4. SCL1

5. SDA1

6. GND

TU001

MAIN PWB ASS'Y (CRT SOCKET)

T

1

6

TP-47G

TP-E

5X16

CN00X

1. B1

2. NC

3. X-RAY2

4. X-RAY1

5. GND

(SOLDER SIDE)

TP-47R

TP-47B

E1

(BRAIDED ASS'Y)

1

UPPER : FOCUS

LOWER : SCREEN

TOP

U

41

CRT EARTH

(No.YA148)1-15

4.6 BASIC OPERATION IN SERVICE MENU

Operate the SERVICE MENU with the remote control unit.

4.6.1 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 circuit.

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

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

5. VSM W/B For setting the values of STANDARD, SOFT, BRIGHT and COOL, NORMAL, WARM.

6. STATUS This is not used for service.

7. PLUG & PLAY (ON) This is not used for service.

4.6.2 BASIC OPERATION IN SERVICE MENU

1. HOW TO ENTER SERVICE MENU

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

2. SELECTION OF SUB MENU SCREEN

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

SERVICE MENU → SUB MENU

1. IF 5. VSM W/B

2. V/C 6. STATUS

3. AUDIO 7. PLUG & PLAY (ON)

4. DEF

3. METHOD OF SETTING

NOTES:

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

• It must not be adjusted without inputting a signal.

(1) 1. IF

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

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

[2.DELAY POINT ]

(a) [1] key Select 1. IF.
(b) [2] key Select 2. DELAY POINT.
(c) MENU [] / [] key Adjust the setting value.
(d) [DISPLAY] key When this is pressed twice, you will return to the SERVICE MENU.

(2) 2. V/C, 3. AUDIO and 4. DEF

(a) [2] ~[4] keys Select one from 2. V/C, 3. AUDIO and 4. DEF
(b) MENU [] / [] 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 the WHITE BALANCE.
For the setting, refer to each item concerned.

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

(3) 5. VSM W/B

(a) [5] keys Select 5. VSM W/B.
(b) MENU [OK] key Select preset items.
(c) MENU [] / [] key Adjust setting items.
(d) MENU [] / [] key Adjust the setting values of the setting items.
(e) [DISPLAY] key When this is pressed, you will return to the SERVICE MENU.

(4) 6. STATUS

This is for display only.

(5) 7. PLUG & PLAY (ON)

This is not used for service.

4. Release of SERVICE MENU

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

1-16 (No.YA148)

4.6.3 SERVICE MENU FLOW CHART

SERVICE MENU

SERVICE MENU

1. IF

3. AUDIO

5. VSM W/B

7. PLUG & PLAY (ON)

1-7 : SELECT DISPLAY : EXIT

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

2. V/C

4. DEF

6. STATUS

6. STATUS

STATUS

V/C STATUS

ECO EOF NOL VNR

***********

COSMIC STATUS

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

1. IF

IF SERVICE MENU

1. VCO

2. DELAY POINT

2. V/C

V/C

1. SCREEN

3. AUDIO

AUDIO

1. DCXO ADJ. =
NOT NICAM

0002

0009

000A

4. DEF

DEF FULL 50Hz

1. V-SHIFT

PAL

HBC

WBC

BRI

***

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

*******

**
**
**

***

(**)

VCO (CW)

TOO HIGH
ABOVE REFERENCE
JUST REFERENCE
BELOW REFERENCE
TOO LOW

Setting item

1. SCREEN

2. CUTOFF (B/G)

3. WDR (R/G/B)

4. BRIGHT (TV/VDO1/2)

5. CONT (TV/VDO1/2)

6. COLOUR (TV/VDO1/2)

7. TINT (TV/VDO1/2)

8. SHARP (TV/VDO1/2)
Y DELAY (TV/VDO1/2

9.

Setting item

1. DCXO ADJ

2. NICAM lower ERRLIM

3. NICAM upper ERRLIM

4. A2 ID THR

MENU EQUALIZER
DYNAMIC
MUSIC
NEWS
USER

Setting item

1. V-SHIFT

2. V-SLOPE

3. V-SIZE

4. H-CENT

5. H-SIZE

6. TRAPEZ

7. EW-PIN

8. COR-UP

9. COR-LO

DELAY POINT

AGC TAKEOVER

10. TINT DVD

11. AMP T.SHARP

)

10. ANGLE

11. BOW

12. V-S. CR

13. V-LIN

14. V-ZOOM

15. V-SCROLL

*****

**

MHz

5. VSM W/B

VSM PRESET BRIGHT

1. BRIGHT

***

1. BRIGHT

2. CONT

3. COLOUR

4. SHARP

5.HUE

Setting item

1. R-DRIVE

2. G-DRIVE

3. B-DRIVE

Setting value (Hexadecimal)

Setting value

Sereen size

FULL
COMPRESS

Fig.1

(No.YA148)1-17

4.7 ADJUSTMENT PROCEDURE

4.7.1 B1 VOLTAGE

Item

B1 VOLTAGE
check

Measuring

instrument

Signal
generator

B1 (pin 1)
GND (pin 5)
[CN00X

DC voltmeter

connector in
MAIN PWB]

4.7.2 FOCUS ADJUSTMENT

Item

FOCUS
adjustment

Measuring

instrument

Signal
generator

Test point Adjustment part Description

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

(between pins 1 and 5 of the connector CN00X).

(3) Make sure that the voltage is DC117.5V ± 3V.

Test point Adjustment part Description

FOCUS VR
[In HVT]

Notes:

• Set PICTURE MODE (VSM) to "BRIGHT".

• The final adjustment of CONVERGENCE must be
done after the FOCUS adjustment. (CONVERGENCE
is affected by the FOCUS adjustment.)
If any aeviation in CONVERGENCE is found, PURITY
must be adjusted to restore the convergence.

(1) Receive a crosshatch signal.
(2) Adjust the FOCUS VR so that the vertical and

horizontal lines will be clear and in fine detail on the
screen.

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

screen gets darkened.

4.7.3 IF CIRCUIT ADJUSTMENTS

Item

IF VCO
check

DELAY POINT
(AGC

Measuring

instrument

Remote
control unit

VCO (CW)

TOO HIGH
ABOVE REFERENCE
JUST REFERENCE
BELOW REFERENCE
TOO LOW

DISPLAY : EXIT

Remote
control unit

. MHz

TAKE-OVER)
adjustment

Adjustment item

2. DELAY POINT

(AGC TAKE-OVER)

Test point Adjustment part Description

[1. IF]

1. VCO (CW)

Note:

• Under normal conditions, no adjustment is required.

(1) Receive a broadcast signal.

Receiving frequency

(2) Select 1. IF from the SERVICE MENU.
(3) Select 1. VCO.
(4) Check the characters colour of the JUST

REFERENCE displayed to yellow.

YELLOW

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

normal screen.

[1. IF]

2. DELAY POINT

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

the image. Any increase above the initial value

Initial setting value

VHF UHF

33 33

produces the noise and any decrease below it
produces the beat.

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

normal screen.

(6) Turn to other channels and make sure that there are

no irregularities.

1-18 (No.YA148)

4.7.4 VIDEO CIRCUIT ADJUSTMENTS

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

• The setting values which adjust the screen to the optimum condition can be different from the initial setting values.

• Do not change the initial setting values of the setting (adjustment) items not listed in "ADJUSTMENT PROCEDURE".

• The initial setting values in parenthesis ( ) are fixed offset values, needing no further adjustment.

Adjustment item Variable range

PAL SECAM NTSC3.58 NTSC4.43

Initial setting value

1. SCREEN BRI 0 ~ 63 32 32 32 32

2. CUTOFF B 0 ~ 63 11 11 11 11
G 0 ~ 637777

3. WDR R 0 ~ 63 32 32 32 32
G 0 ~ 63 32 32 32 32
B 0 ~ 63 45 45 45 45

4. BRIGHT RF 0 ~ 63 39 39 --- --­VIDEO 1 (-32 ~ +31) (+4) (+4) (+4) (+4)
VIDEO 2 (-32 ~ +31) (+4) (+4) (+4) (+4)

5. CONT. RF 0 ~ 63 32 32 --- --­VIDEO (-32 ~ +31) (+1) (+1) (+1) (+1)

6. COLOUR RF 0 ~ 63(-32 ~ [phone]* --­VIDEO (-32 ~ +31) (0) (+3) (+7) (+2)

7. TINT RF 0 ~ 63(-32 ~ +31) --- --- (+27) (+3)
VIDEO (-32 ~ +31) --- --- (+5) (+2)

8. SHARP RF 0 ~ 63 30 30 30 30
VIDEO 0 ~ 63 48 48 48 48

9. Y DELAY RF 0 ~ 15 5 5 7 7
VIDEO 0 ~ 155555

10. TINT DVD VIDEO 0 ~ 63 34 33 32 32

11. AMP T.SHARP RF, VIDEO 0 ~ 63 0 0 0 0

Item

WHITE
BALANCE
(Low light)
adjustment

B CUTOFF (

B CUTOFF (

Measuring
instrument

Signal
generator

Remote
control unit

REMOTE CONTROL UNIT

12 3

4

)



789

)



Test point Adjustment part Description

[2. V/C]

2. CUTOFF (B)

2. CUTOFF (G)

Note:

• Set PICTURE MODE (VSM) to "BRIGHT".
(1) Receive a PAL black and white signal (colour off).

(2) Select 2. V/C from the SERVICE MENU.
SCREEN VR
[In HVT]

(3) Select 2. CUTOFF (B) and (G).

(4) Set each value to initial setting value with the [4] / [7]

keys and [5] / [8] keys.

(5) Turn the SCREEN VR fully counterclockwise, then

V/C

2. CUTOFF

PAL

(B)

(**)

**

(G)

(

)

**

**

slowly turn it clockwise to where a red, blue or green
colour is faintly visible.

(6) Use the [4] / [7] and [5] / [8] keys to adjust so that

the other 2 colours appear white.

(7) Turn the SCREEN VR to where the single horizontal

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

screen.

Variable Initial setting

range value

56

G CUTOFF ()

G CUTOFF (

Adjustment Item



)

2. CUTOFF

B 0 ~ 63 11

G0 ~ 63 7

(No.YA148)1-19

Item

WHITE
BALANCE
(High light)
adjustment

Measuring

instrument

Signal
generator

Remote
control unit

Test point Adjustment part Description

[2. V/C]

3. WDR (R)

3. WDR (G)

3. WDR (B)

Notes:

• Proceed to the following adjustment after having
completed the WHITE BALANCE (Low light) adjustment.

• Set PICTURE MODE (VSM) to "BRIGHT".

(1) Receive a PAL black and white signal (colour off).
(2) Select 2. V/C from the SERVICE MENU.
(3) Select 3. WDR (R), (G) and (B).

V/C

3. WDR

PAL

(**)

(R)

**

)

(

(G)

**

**

(B)

**(**

)

(4) Set each value to initial setting value with the [4] to

[9] keys.

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

screen.

SUB BRIGHT
adjustment

SUB
CONTRAST
adjustment

R DRIVE (

R DRIVE (

REMOTE CONTROL UNIT

12 3

4

)



789

)



Remote
control unit

Remote
control unit

56

G DRIVE ( )

B DRIVE ( )

B DRIVE ( )

G DRIVE (

[2. V/C]

4. BRIGHT

[2. V/C]

5. CONT

Adjustment Item

Variable Initial setting

range value

R0 ~ 63 32*

3. WDR G 0 ~ 63 32

B 0 ~ 63 45*









)

Notes:

• Proceed to the following adjustment after having
completed the WHITE BALANCE (Low light) and
WHITE BALANCE (High light) adjustment.

• Set PICTURE MODE (VSM) to "BRIGHT".

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

make fine adjustment until you get the best brightness.

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

normal screen.

Notes:

• Proceed to the following adjustment after having
completed the SUB BRIGHT adjustment.

• Set PICTURE MODE (VSM) to "BRIGHT".

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

make fine adjustment until you get the best contrast.

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

normal screen.

1-20 (No.YA148)

Item

SUB COLOUR 1
adjustment

SUB COLOUR 2
adjustment

Measuring
instrument

Remote
control unit

Signal
generator

Oscilloscope

Remote
control unit

Y

W

Test point Adjustment part Description

[2. V/C]

6. COLOUR

[Method of adjustment without measuring instrument]
Notes:

• Proceed to the following adjustment after having
completed the SUB CONTRAST adjustment.

• Set PICTURE MODE (VSM) to "BRIGHT".

- PAL COLOUR -

(1) Receive a PAL broadcast.
(2) Select 2. V/C from the SERVICE MENU.
(3) Select 6. COLOUR.
(4) Set the initial setting value for PAL COLOUR.
(5) If the colour is not best with the initial setting value,

adjust until you get the best colour.

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

normal screen.

- SECAM COLOUR -

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

SECAM colour system.

(3) Adjust SECAM COLOUR in the same way as for

"PAL COLOUR".

- NTSC 3.58 COLOUR -

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

NTSC 3.58 colour system.

(3) Adjust 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.

TP-47G
TP-E
[CRT SOCKET
PWB]

[2. V/C]

6. COLOUR

[Method of adjustment using measuring instrument]
Notes:

• Proceed to the following adjustment after having
completed the SUB CONTRAST adjustment.

• Set PICTURE MODE (VSM) to "BRIGHT".

- PAL COLOUR -

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

75% white).
(2) Select 2. V/C from the SERVICE MENU.
(3) Select 6. COLOUR.

B

M

R

C

G

(A)

(–)
0V
(+)

(4) Set the initial setting value of PAL COLOUR.
(5) Connect the oscilloscope between TP-47G and TP-E.
(6) Adjust PAL COLOUR to set the value (A) in the

figure to +13V.

- SECAM COLOUR -

(1) Receive a SECAM colour bar signal (colour bar 75%

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

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

figure to +3V.

- NTSC 3.58 COLOUR -

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

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

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

figure to +7V.

- NTSC 4.43 COLOUR -

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

(No.YA148)1-21

Item

SUB TINT 1
adjustment

SUB TINT 2
adjustment

Measuring

instrument

Signal
generator

Remote
control unit

Signal
generator

Oscilloscope

Remote
control unit

(B)

W

Y

Test point Adjustment part Description

[2. V/C]

7. TINT

[Method of adjustment without measuring instrument]

Notes:

• Proceed to the following adjustment after having
completed the SUB CONTRAST adjustment.

• Set PICTURE MODE (VSM) to "BRIGHT".

- NTSC 3.58 TINT -

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

bar 75% white).

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

NTSC 3.58 colour system.
(3) Select 2. V/C from the SERVICE MENU.
(4) Select 7. TINT.
(5) Set the initial setting value of NTSC 3.58.
(6) If you cannot get the best tint with the initial setting

value, make fine adjustment until you get the best

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

normal screen.

- NTSC 4.43 TINT -

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

TP-47G
TP-E
[CRT SOCKET
PWB]

[2. V/C]

7. TINT

[Method of adjustment using measuring instrument]

Notes:

• Proceed to the following adjustment after having

completed the SUB CONTRAST adjustment.

• Set PICTURE MODE (VSM) to "BRIGHT".

- NTSC 3.58 TINT -

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

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

B

M

R

NTSC 3.58 colour system.
(3) Select 2. V/C from the SERVICE MENU.
(4) Select 7. TINT.
(5) Set the initial setting value of NTSC 3.58.

C

G

(–)
0V
(+)

(6) Connect the oscilloscope between TP-47G and TP-E.
(7) Adjust NTSC 3.58 TINT to set the value (B) in the

figure to +6V.
(8) Press the [DISPLAY] key twice to return to the

normal screen.

- NTSC 4.43 TINT -

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

1-22 (No.YA148)

4.7.5 DEFLECTION CIRCUIT ADJUSTMENTS

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

• The setting values which adjust the screen to the optimum condition can be different from the initial setting values.

• When performing deflection circuit adjustment, adjusts PAL signal (fv: 50 Hz) in 4:3 mode, and adjust the NTSC signal (fv: 60 Hz)
similarly.

Note:

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

 4. DEF

Variable range Initial setting value

Adjustment item

4:3

50Hz

60Hz

4:3

50Hz 60Hz

1. V-SHIFT 0 ~ 63 -32 ~ +31 0 0

2. V-SLOPE 0 ~ 63 -32 ~ +31 +32* 0*

3. V-SIZE 0 ~ 63 -32 ~ +31 +38* 0*

4. H-CENT 0 ~ 63 -32 ~ +31 +32* 0*

5. H-SIZE 0 ~ 63 -32 ~ +31 0 0

6. TRAPEZ 0 ~ 63 -32 ~ +31 0 0

7. EW-PIN 0 ~ 63 -32 ~ +31 0 0

8. COR-UP 0 ~ 63 -32 ~ +31 0 0

9. COR-LO 0 ~ 63 -32 ~ +31 0 0

10. ANGLE 0 ~ 63 -32 ~ +31 +32* 0*

11. BOW 0 ~ 63 -32 ~ +31 +32* 0*

12. V-S.CR 0 ~ 63 -32 ~ +31 +32* 0*

13. V-LIN 0 ~ 63 -32 ~ +31 +32* 0*

14. V-ZOOM 0 ~ 63 -32 ~ +31 (+30) (0)

15. V-SCROLL 0 ~ 63 -32 ~ +31 (+32) (0)

NOTE: The value with an asterisk * is variable for adjustment. The values in parenthesis ( ) are fixed values.

 COMPRESS: OFF (4:3)

Item

V. SLOPE
adjustment

Measuring
instrument

Signal
generator

Test point Adjustment part Description

[4. DEF]

2. V-SLOPE

- PAL V. SLOPE -

(1) Receive a PAL circle pattern signal of vertical

frequency 50Hz.
Remote
control unit

(2) Select 4. DEF from the SERVICE MENU.
(3) Select 2. V-SLOPE.
(4) Set the initial setting value of 2. V-SLOPE.
(5) Adjust 2. V-SLOPE to make "A = B".
(6) Press the [DISPLAY] key twice to return to

A

Blanking
line

B

SERVICE MENU screen.

- NTSC V. SLOPE -

(1) Input a NTSC circle pattern signal of vertical

frequency 60Hz.

(2) Make similar adjustment of NTSC V-SLOPE in the

same way as for "PAL V-SLOPE".

V. HEIGHT
adjustment

Screen

size

92%

Signal
generator

Remote
control unit

[4. DEF]

3. V-SIZE

14. V-ZOOM

Picture
size
100%

- PAL V. HEIGHT -

(1) Receive a PAL crosshatch signal.
(2) Select 3. V-SIZE.
(3) Set the initial setting value of 3. V-SIZE.
(4) Select 14. V-ZOOM.
(5) Set the initial setting value of 14. V-ZOOM.
(6) Adjust 14. V-ZOOM to make the vertical screen size

to 92% of the picture size.

- NTSC V. HEIGHT -

(1) Input a NTSC crosshatch signal.
(2) Make similar adjustment of NTSC V. HEIGHT in the

same way as for "PAL V. HEIGHT".

(No.YA148)1-23

Item

H. POSITION
adjustment

Measuring

instrument

Signal
generator

Test point Adjustment part Description

[4. DEF]

4. H-CENT

Remote
control unit

CD

- PAL H. POSITION -

(1) Receive a PAL circle pattern signal.
(2) Select 4. H-CENT.
(3) Set the initial setting value of 4. H-CENT.
(4) Adjust 4. H-CENT to make "C = D".

- NTSC H. POSITION -

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

the same way as for "PAL H. POSITION".

V.LINEARITY
adjustment

H. PARALLEL
adjustment

Signal
generator

Remote
control unit

Signal
generator

Remote
control unit

Parallel

[4. DEF]

12. V-S. CR

13. V-LIN

TOP

CENTRE

BOTTOM

[4.DEF]

10. ANGLE

- PAL V. LINEARITY -

(1) Receive a PAL crosshatch signal.
(2) Select 12. V-S.CR.
(3) Set the initial setting value of 12. V-S. CR.
(4) Select 13. V-LIN.
(5) Set the initial setting value of 13. V-LIN.
(6) Adjust 12. V-S. CR and 13. V-LIN so that the spaces

of each line on TOP, CENTRE and BOTTOM
become uniform.

- NTSC V. LINEARITY -

(1) Input a NTSC crosshatch signal.
(2) Make similar adjustment of NTSC V-S. CR in the

same way as for "PAL V-S. CR".

- PAL H. PARALLEL -

(1) Receive a PAL crosshatch signal.
(2) Select 10. ANGLE.
(3) Set the initial setting value of 10. ANGLE.
(4) Adjust 10. ANGLE to optimize the trapezium

distortion at the centre of the screen.

- NTSC H. PARALLEL -

(1) Input a NTSC crosshatch signal.
(2) Make similar adjustment of NTSC H. PARALLEL in

the same way as for "PAL H. PARALLEL".

1-24 (No.YA148)

Item

H. BOW
adjustment

Measuring
instrument

Signal
generator

Remote
control unit

4.7.6 VSM PRESET SETTING

Test point Adjustment part Description

[4.DEF]

11. BOW

- PAL H. BOW -

(1) Receive a PAL crosshatch signal.
(2) Select 11. BOW.
(3) Set the initial setting value of 11. BOW.
(4) Adjust 11. BOW to optimize the horizontal arc

distortion.

Straight

- NTSC H. BOW -

(1) Input a NTSC crosshatch signal.
(2) Make similar adjustment of NTSC H. BOW in the

same way as for "PAL H. BOW".

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

normal screen.

Item

VSM
PRESET
setting

Measuring
instrument

Remote
control unit

SUB MENU 5. VSM W/B

VSM PRESET BRIGHT

1. BRIGHT

Test point Adjustment part Description

[5. VSM W/B]

1. BRIGHT

2. CONT

3.COLOUR

4. SHARP

5. HUE

1. R-DRIVE

2. G-DRIVE

3. B-DRIVE

(1) Select 5. VSM W/B from the SERVICE MENU.
(2) Select BRIGHT with the MENU [OK] key.
(3) Set the value of 1. BRIGHT ~ 5. HUE to the values

shown in the table.

(4) Respectively select the VSM PRESET mode for

SOFT and STANDARD.

(5) Select COOL with the MENU [OK] key.
(6) Set the values of 1. R-DRIVE ~ 3. B-DRIVE to the

value shown in the table.

(7) Select the W/B preset for WARM and NORMAL,

respectively.

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

normal screen.

***

[Setting Values for SUB 5. VSM W/B]

VSM preset

BRIGHT STANDARD SOFT

Setting item

1. BRIGHT 0+4

2. CONT +15 +1

3. COLOUR 00

4. SHARP 0 -10

5. HUE 0

W/B preset

COOL WARMNORMAL

Setting item

1. R-DRIVE 0 0 +10

2. G-DRIVE +20-4

3. B-DRIVE 0 -10 -12

+4

+4

0

0

0

0

(No.YA148)1-25

4.7.7 PURITY AND CONVERGENCE

 PURITY ADJUSTMENT

Note:

The final adjustment of CONVERGENCE must be done after
the FOCUS adjustment. (CONVERGENCE is changed by
FOCUS adjustment.)
When makes difference by FOCUS adjustment, should be
reconfirming PURITY adjustment.

(1) Demagnetize CRT with the demagnetizer.

(2) Loosen the retainer screw of the deflection yoke.

CRT

WEDGE

DEFLECTION
YOKE

P

4 6

P / C

MAGNETS

(3) Remove the wedges.

(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 centre 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.

(10) Input a crosshatch signal.

• P/C MAGNETS

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

Fig.1

PURITY MAGNETS

Long lug

Short lug

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

Fig.2

(FRONT VIEW)

GREEN RASTER

(11) Verify that the screen is horizontal.

(12) Input red and blue raster signals, and make sure that purity

is properly adjusted.

1-26 (No.YA148)

CENTRE

Fig.3

 STATIC CONVERGENCE ADJUSTMENT

(1) Input a crosshatch signal.

(2) Using 4-pole convergence magnets, overlap the red and

blue lines in the centre of the screen (Fig.1) and turn them
to magenta (red/blue).

(3) Using 6-pole convergence magnets, overlap the magenta

(red/blue) and green lines in the centre of the screen and
turn them to white.

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

(FRONT VIEW)

Fig.1

(FRONT VIEW)

 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.

(4) Adjust XV by XV coil. (Fig.4)

• After adjustment, fix the wedge at the original position. Fasten
the retainer screw of the deflection yoke. Fix the P/C magnets
with glue.

GREEN

RED

RED

BLUE

BLUE

GREEN

Fig.2

(FRONT VIEW)

GREEN GREEN

RED

BLUE

Fig.3

BLUE

BLUE

RED

GREENGREEN

BLUE

RED

RED

RED

GREEN
BLUE

BLUE
GREEN

RED

(FRONT VIEW)

Xv

GREEN

Fig.4

(No.YA148)1-27

SECTION 5

TROUBLESHOOTING

5.1 SELF CHECK FUNCTIONS

5.1.1 OUTLINE

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

5.1.2 SELF CHECK ITEMS

Check item Details of detection Method of detection State of abnormality

B1 over-current protection An over-current on the low B1

line is detected.

CRT neck broken protection Operation of CRT neck

protection circuit.

5.1.3 SELF CHECK INDICATING FUNCTION

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

The main microcomputer
detects the possible abnormality
at 24-msec. intervals and judges
the results in every 16 time. Of
the 16 times, if NG is detected
more than 9 times, it is judged
that there is an abnormality.

After about
5 seconds

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
disconnected and connected
again.

Detection of
an abnormality

Power on
Port

[ INDICATION BY THE POWER LED]

Item LED flashing intervals

B1 over-current protection / CRT neck broken protection 0.3 seconds

Start of
detection

Flashing LED

SUB-POWER OFF

1-28 (No.YA148)

Victor Company of Japan, Limited
AV & MULTIMEDIA COMPANY VIDEO DISPLAY CATEGORY 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan

(No.YA148)

Printed in Japan

VPT