JVC AV-48WP30 Service Manual

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SER VICE MANUAL

REAR PROJECTION TELEVISION

V-48WP30

BASIC CHASSIS

AV-48WP30

SB2

CONTENTS

SPECIFICATIONS

SAFETY PRECAUTIONS

FEATURES

FUNCTIONS

INSTALLATION

TECHNICAL INFORMATION

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････････････････････････

2 3 4 4 7 8

MAIN PARTS LOCATION

SPECIFIC SERVICE INSTRUCTIONS

SERVICE ADJUSTMENTS

TROUBLESHOOTING

PARTS LIST

★

OPERATING INSTRUCTIONS

★

STANDARD CIRCUIT DIAGRAM

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No.51914 Feb. 2002

9 10 19 51 53

2-1

V-48WP30

SPECIFICATIONS

Items Contents

Dimensions (W Mass TV RF System

Color System Sound System

TV Receiving Channels and Frequency

VL Band VH Band UHF Band

CATV Receiving Channels an d Frequenc y

Low Band High Band Mid Band Super Band Hyper Ban d Ultr a B a nd Sub Mid Band

TV/CATV Total C hannel Antenna Terminal Intermediate Frequency

Video IF Carrier

Sound IF Carrier Color Sub Carrier Power Input

Power Consumption Screen Screen Size Projection Tube High Voltage Speaker Audio Power Out put External Input

Audio Output Digital-Input

Speaker Input AV Compulink Remote Control Unit

××××H××××

Video Input

Audio Input

S-Video

Component Input

ⅢⅢⅢⅢ φ

120.0cm×124.4cm×60.9cm ( 47-1/4

81.0 kg (179.0 Ibs) CCIR (M)

NTSC BTSC System (Multi Channel Sound)

(02～06) 54MHz～88MHz (07～13) 174MHz～216MHz (14～69) 470MHz～806MHz

(02～06, A-8) by (02～06&01) (07～13) by (07～13) (A～1) by (14～22) (J～W) by (23～36) (W+1～W+28) by (37～64) (W+29～W+84) by (65～125) (A8, A4～A1) by (01, 96～99)

180 Channels 75Ω(VHF/UHF) F-type connector

45.75MHz

41.25MHz (4.5MHz)

3.58MHz 120V AC, 60Hz

248W Transparent screen (unitized fresnel lens / double lenticular lens)

(122cm) Measured diagonally, 16:9 ratio (W:106.3cm, H:59.8cm)

48 17cm (6.7 31kV±1.0kV (at z ero b eam cur r ent )

13cm round×2, φ5.5cm r ound×2

10W+10W

1Vp-p, 7 5Ω (RCA pin jack×4) 500mVrms ( -4dBs ), high impedance (RCA pin jack×8) Y: 1Vp-p positive (negative sync provided, when terminated with 75Ω) C: 0.286V Mini-DIN 4pin connector×2 P

Y: 1Vp-p 1080i DTV (digital broadcast) ready Fix : 500mVrms(-4dBs) low impedance (1kHz when modulated 100%)

DVI-D signal link 19pin connector (Digital-input terminal is not compatible with computer signal.)

45W 16Ω(max imum input)

3.5mm m in i jac k

RM-C322G (AA/R6/UM-3 b atter y×2)

) tube ×3 ( R / G / B )

(burst signal, when terminated with 75Ω)

p-p

: ±0.35Vp-p : ±0.35Vp-p

,75

(RCA pin jack×2)

,75

(RCA pin jack×2)

,75

(RCA pin jack×2)

×49×

(54MHz～804MHz)

)

No. 51914

SAFETY PRECAUTIONS

V-48WP30

1. The design of this product cont ains special hardware, m any 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 personn el only.

2. Alter ati ons of t h e d esign or circ uitry of th e products s h oul d n o t 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 safe ty-related characteristics. These characteristics are often not evi dent from vis ual insp ecti on nor c an the pr otecti on afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts that have these special safety charact erist ics are identif ied in th e parts lis t of Servic e m anual.

Electric al comp on ent s hav ing su ch f eatur es ar e id ent ifi ed by shading on the sche m atic s an d by ( in Service manual.

does not have the same safety characteristics as the recommended replacement part shown in the parts list of Servi ce m a nua l ma y cause s hock, f i re, or ot her h a zards .

Use isolat i on tra nsformer wh en hot chassis.

The chass is an d any su b-chass is c ontain ed in som e prod ucts ar e con nect ed t o on e sid e of th e AC p owe r lin e. An is olat ion transf ormer of adequate cap acity should be ins erted between the produc t and the AC power supp ly point while perf ormin g any service on some products when the HOT chassis is exposed.

Don't short b etween the LIVE s ide gr ound a nd IS OLATE D (NEUTRAL) side ground or EARTH side ground when repairing.

Some model's power circuit is partly different in the GND. The differenc e of the G ND is shown by t he LI VE : (") side GND, the ISOLATED(N EUTRAL) : (#) sid e GND an d EARTH : ($) side GND. Don't short between the LIVE side GND and ISOLATED(NEUTRAL) side GND or EARTH side GND and never meas ure with a meas uring app aratus (oscill osc ope etc.) the LIVE side GND and ISOLATED(NEUTRAL) sid e GND or EARTH side GND at the same time. If above note will not be kept, a fuse or any parts will be broken.

6. 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).

7. The high vol t age applied t o the pictur e tube must conf orm wit h that specif ied in Service manual. Excessi ve high voltage can cause an increase in X-Ray emission, arcing and possible component damage, therefor e operation under excessive high voltag e conditi ons sh ould b e kept to a mini mum, or shoul d be prevented. If severe arcing occurs, remove the AC power immediately and determine the cause by visual inspection (incorr ect inst allati on, crac ked or melt ed high volt age har ness, poor sold ering, etc.). T o maint ain the proper minimu m level of soft X-Ra y emiss ion, comp onents i n the high voltag e circuit ry includi ng the pic ture tu be must be the exact r eplacem ents or alternatives approved by the manufacturer of the complete product.

8. Do not check high voltage by drawing an arc. Use a high voltag e meter or a high vol t age prob e wit h a VTVM. Disc harg e the picture tube before attempting meter connection, by connect ing a c lip lead to t he gr ound fr am e and c onnect ing t h e other end of the lead through a 10kΩ 2W resistor to the anode button.

9. When service is required, observe the original lead dress. Extra pr ecauti on shou ld be gi ven to assure c orrect l ead dr ess 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.

The use of a substitute replacement which

) on th e parts li st

!!!!

10.

Isolation Check

(Saf ety for Electri cal Shock Hazard )

After r e- assembling t he product, always perf orm an isolation check on the exposed metal parts of the cabinet (antenna terminals, video/audio input and output terminals, Control knobs, metal cabinet, screwheads, earphone jack, control shafts , etc.) to b e sure th e produc t is saf e to oper ate with out danger of electric al sh oc k.

(1)

Dielectric Streng th T est

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 1100V AC (r.m.s.) for a period of one second.

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

rated up t o 120V, an d 3000 V AC (r. m.s.) to an ap pli anc e rat ed 200V or mor e, f or a peri od of on e s ec on d.) This method of test requires test equipment not generally found in the service trade.

(2)

Leak age Current Check

Plug th e AC lin e c ord dir ec tly into th e AC outl et ( do not us e a line is olati on transf ormer during this ch ec k .) . Us ing a "L eakage 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 gr ound ( water pi pe, etc.) . An y l eakage c urrent mus t n ot 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 th e AC lin e c ord dir ec tly into th e AC outl et ( do not us e 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 voltm eter . Mo ve the resis t or c on n ection to eac h e xp os ed metal part, particularly any expo se d metal part having a return path to the chass is, and m easure the AC voltag e across the r esistor. Now, reverse the plug in the AC outlet and repeat each measur ement. A ny volt age m easur ed mus t not exc eed 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

GOOD EARTH GROUND

11.

High voltage hol d do wn circuit chec k.

After repair of the high voltage hold down circuit, this circuit shall be checked to operate correctly. See item "

circuit

This mark shows a fast operating fuse, the letters indicat e d be lo w show the rating.

0.15μF AC-TYPE

1500

10W

How to check the high voltage hold down

OR MORE SENSITIVITY)

PLACE THIS PROBE ON EACH EXPOSED METAL PART

POWER CORD REPLACEMENT WARNING.

Connecting the white line side of power cord to “WHT” character side.

/V,

A V

No. 51914

V-48WP30

FEATURES

New chassis d esi gn enable use of an in t er ac ti ve on sc r een control.

2-3PULL DOWN : You can enjoy DVD movies at the highest picture quality.

MOTION COMPENSATION : With this function, the seamless reproduction of dynamic motion on the screen has been realized.

Bullet-in DSD (Digital Supper Detail) circuit and 3 dimension Y/C separate circuit.

Receive DTV broadcast (1080i / 720p / 480p / 480i)

Built-in HDCP / Component (Y / P

Built-in Hyper Sound, BBE circuit.

/ PR)

FUNCTIONS

■■■■

FRONT CONTROL KEY & T ERMINAL

■

REAR TERMINAL

MENU Button ( OPERATE

4 3

Channel -/+ Button ( OPERATE / )

VOLUME -/+ Button

MAIN POWER SW Button

POWER LAMP (BLUE)

INPUT4

( AUDIO / VIDEO / S-VIDEO )

)

▼

DIGITAL IN

4 3 2

No. 51914

( DVI-D Signal Link 19pin )

INPUT 1

( AUDIO / VIDEO / S- VIDEO ) INPUT 2

( AUDIO / VIDEO ) INPUT 3

( AUDIO / VIDEO / S- VIDEO ) INPUT 2

( COMPONENT VIDEO ) INPUT 3

( COMPONENT VIDEO ) SPEAKER INPUT

AUDIO OUT

AV COMPULINK

AUDIO INPUT(For DIGITAL IN)

Ⅲ

■■■■

REMOTE CONTROL UNIT [ RM-C322G ]

3 2

POWER Key

ASPECT Key

V-48WP30

5 6

VCR / DVD Key

TV / CATV Key

NATURAL CINEMA Key

INPUT Key

DISPLAY Key

SLEEP TIMER Key

BBE Key

V.STATUS Key

10 12

11 20

HYPER SURROUND Key

MUTING Key ( memory Key )

FUNCTION Key ( ▲ / ▼ /

MENU Key

MULTI SCREEN Key

NUMBERS Key

100+ Key

/ )

RETURN+ Key

LIGHT Key

V-CHIP Key

EXIT Key

VCR / DVD Key

No. 51914

V-48WP30

■■■■

DIGITAL-IN TERMINAL FUNCTIONS

PIN No.

1 RX2- 13 RX3+ 2RX2+14 5V

3 GND2/ 4 15 GND

5 RX4+ 17 RX0-

6 SCL 18 RX0+

7 SDA 19 GND0/5

8NC20RX5-

9 RX1- 21 RX5+

10 RX1+ 22 GNDC

11 GND1/3 23 TXC+

12 RX3- 24 TXC-

PIN NAME

RX4-

PIN No.

16 HTPLG

PIN NAME

PIN AS SIG NMENT

17 18 19 20 21 22 23 24

1 2

5 6

7 8

No. 51914

INSTALLATION

1. INSTALLATION SITE

1. The rear of this s et is provi ded with ventilati on openings . Inst all the set more than 5 c m from a wall and in a loc at i on w ith good ven t i l ation.

2. Avoid the following types of locations. (1) U ns table locat i ons (l oc ati on mus t b e abl e to wi ths tand heav y wei ght). (2) Locatio ns subjected to direct sunlight. (3) Near sto ves or other heating devic es. (4) Locations subjected to humidity or oily smoke. (5) Dusty locations. (6) Locati ons wi th strong vibration.

2. INSTA LLATION ADJUSTMENT

When installing, moving or changing the orientation of the set, perform static convergence adjustment according to the following procedure.

V-48WP30

(m ore than 5cm)

Wall

VENTILATION OPENING

1. Press the MENU key of the remote control unit.

2. Select the "CONVERGENCE" in the INITIAL SETUP menu with Function key.

▲/▼

3. Press the Function / key, the convergence adjustment screen appears

with crosses ( +) displayed in 9 locations.

Locati ons where the cross es appear in 3 colours

Convergence adjustment is required. Perform steps 4 to 5.

Locations where the crosses are white:

The convergence is adjusted correctly.

lf all the crosses are white, no convergence adjustment is needed.

4. The locations of the crosses correspond to the positions of the number keys on

the remote control. A box appears around the selected cross.

5. Press the S ELECT but ton to chan ge the col or of th e box to the c olor of the

cross you want to adjust (r ed or blue).

You cannot adjust the green cross.

6. Use the / and / buttons to adjust the position of the cross.

To cancel the ad jus tments before complet i ng the pr oc edu re, press t he EXIT

button.

7. Press the ENTER button to end the convergence adjustment procedure.

lf you do not us e the TV c ontrols f or roughl y one minut e, the con vergence

adjust m ent sc reen autom atically dis app e ar s .

Fig.1

Fig.2

No. 51914

V-48WP30

TECHNICAL INFORMATION

■

MAIN MICRO COMPUTER (CPU) FUNCTION

(MIN102H57K)

№№№№

PIN NAME

1 CONV. SW 2 /VSYNC 3 LB PRO 4 NC 5 /RST 6 CONV. BUSY 7 /TEST 8 YS 9 NC 10 NC 11 A_MUTE 12 /HSYNC 13 M_MUTE 14 OSDXI 15 OSDXO 16 SDA2 17 AC_IN 18 SCL2 19 TU_POW 20 VCOI 21 PDO 22 /IP_RESET 23 YM 24 B 25 LED_POWER 26 G 27 R 28 VREF 29 IP_ERR 30 IREF 31 COMP 32 AVDD 33 CLL 34 VREFLS 35 SUB_CCD 36 NC 37 VSS 38 MAIN_CCD 39 VREFHS 40 CLH 41 VDD 42 LED_DATA

I/O

I/OI/O

CONVERGENCE SW

OOOO

V.SYNC IN for OSD

IIII

LOW B Protection

IIII

－

Micon Reset input

IIII

CONV.

OOOO

+3.3V

IIII

OSD YS OUT

OOOO

Micon test pin

OOOO

TV Sound Muting

OOOO

H.sync input for OSD

IIII

Monitor Out Muting

OOOO

－

I2C BUS (SDA) for MTS

OOOO

AC 50/60Hz in

IIII

I2C BUS (SCL) for MTS

OOOO

Tuner Power Control

OOOO

LPF input

IIII

LPF output

OOOO

OSD YM out

OOOO

OSD Blue out

OOOO

LED for Power

OOOO

OSD Green Out

OOOO

OSD Red Out

OOOO

IIII

AMDP program load det.

IIII

+3.3V

IIII

For Sub CCD

IIII

STD VOL in for Sub CCD

IIII

For Sub CCD

IIII

－

GND

IIII

For main CCD

IIII

STD VOL in for CCD

IIII

For main CCD

IIII

+3.3V

OOOO

Front control Data

OOOO

FUNCTION

№№№№

PIN NAME

43 LED_CLOCK 44 LED_ON_TIMER 45 SBO0 46 SBD0 47 AP DATA 48 INC 49 ECO RST 50 ROT COIL L 51 ROT COIL R 52 H BLK 53 SN COIL_R 54 SN COIL_L 55 BS POW 56 I2C STOP 57 NC 58 /LOB_POW 59 COMPULINK 60 /POWERGOOD 61 /MECA_ON 62 /MAIN_POW 63 NC 64 /B1 POW 65 C / N 66 X-RAY 67 EE CDS 68 KEY2 69 KEY1 70 SCL1 71 SDA1 72 REMO 73 AP REQ 74 VSS 75 OSC2 76 OSC1 77 VDD 78 SCL0 79 AP CLK 80 SDA0 81 NC 82 NC 83 NC 84 P MUTE

I/O

I/OI/O

OOOO

－

OOOO

Ter restr ial Mag net i sm Sensor

OOOO ↑

OOOO

－

OOOO

IIII

OOOO

－

OOOO

－

IIII

－

IIII

OOOO

I/O

I/OI/O

IIII

－

IIII

OOOO

IIII

OOOO

－

I/O

I/OI/O

－

OOOO

FUNCTION

F. LED CLK LED on tim er

Eco Reset Picture rotation Picture rotation H.BLK

BS pow er control I2C BUS STOP

LOB power control AV CompulinkⅢInput Power Condition Check Machine SW Interrupt MAIN POWER CONTROL NC B1 POWER CONTROL

X-ray detection

Front Key i nput 2 Front Key i nput 1 I2C BUS (CLK) for E2PROM I2C BUS (SDA) for E2PROM Remocon IN

GND 4MHz OSC 4MHz OSC +3.3V I2C BUS (CLK) for General

I2C BUS (SDA) for General

NC Pictur e mu ting

No. 51914

MAIN PARTS LOCATION

■

PWB ASS’Y ARRANGEMENT

The PWB ASS’Y is indicated below.

V-48WP30

MAIN PWB ASS’Y (SSB-1051A-M2)

POWER & DEF PWB ASS’Y (SSB-2051A-M2)

R CRT SOCKET PWB ASS’Y (SSB-3151A-M2)

G CRT SOCKET PWB ASS’Y (SSB-3251A-M2)

B CRT SOCKET PWB ASS’Y (SSB-3351A-M2)

R VM PWB ASS’Y (SSB-7151A-M2)

G VM PWB ASS’Y (SSB-7251A-M2)

B VM PWB ASS’Y (SSB-7351A-M2)

FRONT CONTROL PWB ASS’Y (SSB0L051A-M2)

REMOCON SENSOR PWB ASS’Y (SSB-8051A-M2)

FRONT CONTROL ASS’Y

CONVERGENCE PWB ASS’Y (SSB-5051A-M2)

CONVERGENCE OSD PWB ASS’Y (SSB0T051A-M2)

CENTER SPEAKER PWB ASS’Y (SSB0A051A-M2)

DIGITAL CONVERGENCE MODULE PWB ASS’Y

LINE FILTER PWB ASS’Y (SSB-9051A-M2)

DEF OSC PWB ASS’Y (SSB0H051A-M2)

I-P CONVERT MODULE PWB ASS’Y (SSB0D051A-M2)

FRONT I/F PWB ASS’Y (SSB0L251A-M2)

AV JACK PWB ASS’Y (SSB0J051A-M2)

RECEIVER PWB ASS’Y (SSB0R251A-M2)

DIGITAL INPUT MODULE PWB ASS’Y (SSB-7851A-M2)

REMOCON SENSOR PWB

(Included in CONVERGENCE PWB)

PROJECTION UNIT

FRONT CONTROL PWB

DIGITAL CONVERGENCE MOULE PWB

CONVERGENCE OSD PWB

CONVERGENCE PWB

FRONT I/F PWB

I-P COVERT MODULE PWB

LINE FILTER PWB

AV JACK PWB

RECEIVER PWB

POWER & DEF PWB

MAIN PWB

CRT SOCKET PWB (R/G/B)

CENTER SPEAKER PWB

DEF OSC PWB

AV TERMANEL BOARD

(This figure is only MAIN UNIT)

VM PWB (R/G/B)

DIGITAL INPUT MODULE PWB

No. 51914

V-48WP30

SPECIFIC SERVICE INSTRUCTIONS

SCREEN HANDLING CAUTIONS

■■■■

SCREEN STORAGE

Store the SCREEN ASS’Y in a standing position in order to avoid deformation. If the screen is stored horizontally, there is risk of def orming the screen face. When necessary to place the SCREEN ASS’Y horizontally, position the screen side upwards and sure to place spacers between the screen and resting site (floor or stand etc.) to prevent the screen from sagging.

■

SCREEN SURFACE

Since the screen surface is easily scratched or soiled, use ample care when handling.

DISASSEMBLY PROCE D URE

If the screen or screen panel need to be replaced, remove the A screws

FRONT CABINET

SCREEN BRACKET (TOP)

(X3)

Leave the screen with flesnel lens and double lenticular lens attached. If cannot be disassembled further.

SCREEN

SCREEN BRACKET (LEFT)

(X4)

SCREEN BRACKET (BOTTOM)

(X3)

SCREEN BRACKET (RIGHT)

(X4)

PROJECTION UNIT REPLACEMENT

■

ADJUSTMENT DURING REPLACEMENT

When replcing the three R, G and B projection units, first replace the R and B units and perform focus / screen / raster centerin g adjustments with ref er ence to the G unit. T hen replac e the G unit and perform G foc us / screen / converg ence adjustm ent. Finall y perform R & B . Convergence adjustments.

■

DISASSEMBLY CAUTION

The projection units include locations that are not to be disassembled during service. When replacing projection unit parts, disassemble to the state indicated in the figure below. The figure indicates screws and wires that are not to be removed. Use care not to remove these.

Deflection yoke wires : to connector on POWER & DEF. PWB ASS’Y.

[R=”RHV”, G=”GHV”, B=”BHV”]

Convergence yoke wires : to connector on CONVERGENCE PWB ASS’Y

[R=”R”, G=”G”, B=”B”]

Use care to simultaneously removes all three-projection units.

R CRT SOCKET PWB ASS’Y G CRT SOCKET PWB ASS’Y B CRT SOCKET PWB ASS’Y

PC MAGNET

Check tha t tape is applied to the CRT neck. If absent, the deflection yoke can dislodge.

Do not remove screws

LENS ASS’Y

LENS ASS’Y SCREW (X 4)

No. 51914

PC MAGNET TAPE

DEF / CONVER. YOKE

CRT ASS’Y(COUPLER ASS’Y)

Do not disassembly

VM PWB PWB (R/G/B)

ANODE wires : to DIVIDER

●

DISASSEMBLY PROCEDURE

V-48WP30

SPEAKER GRILLE

1. Remove 4 screws A from rear side.

2. Remove the SPEAKER GRILLE.

SPEAKER (WOOFER)

Remove the SPEAKER GRILLE

1. Remove 4 screws B.

2. Take out the WOOFER.

3. Disconnect the speaker wire from speaker terminal.

SPEAKER (TWEETER)

Remove the SPEAKER GRILLE

1. Remove 2 screws C.

2. Take out the TWEETER.

3. Disconnect the speaker wire from speaker terminal.

FRONT BOARD

Remove the SPEAKER GRILLE.

1. Remove 4 screws D.

2. Remove the FRONT BOARD.

FRONT CONTROL BOX

Remove the SPEAKER GRILLE.

1. Remove 4 screws E attaching the F RONT CONTROL BOX.

2. Disc onnect the c on nector

CONTROL PWB.

3. Remove the FRONT CONTROL BOX.

, X ,

on the FRONT

SPEAKER WIRE

SPEAKER

(WOOFER)

SPEAKER

(TWEETER)

FRONT CONTROL BOX

FRONT BOARD

SPEAKER GRILL

FRONT CONTROL PWB

Remove the SPEAKER GRILLE.

Remove the FRONT CONTROL BOX.

1. Remove 3 screws F from rear side of FRONT CONTROL BOX.

2. Remove the FRONT CONTROL PWB.

CAUTION AT DISASSEMBLY

48WP30CP-S : DIGITAL INPUT MODULE

POWER CORD

AV JACK BOARD

connector

FRONT CONTROL BOX

REAR SIDE

FRONT CONTROL PWB

Prior to disassembly, unplug the power code from the AC outlet

without fail. (Turn the power “off”.)

Short the SB connector (1) pin and (2) pin of the DIGITAL

INPUT MODULE. (At the time of assembling)

Bef ore the rear panel is i nserted int o the cabi net, releas e the

short-cir cuit betw een the SB conn ec tor (1) pin an d (2) pin of the DIGITAL INPUT MODULE.

After rel easing th e shor t-circ uit bet ween the SB conn ectors, do

not turn the power on until the rear p anel is inserted into th e cabinet.

Negligence in carrying out the above steps may cause the

inactivation of the TV.

No. 51914

V-48WP30

SCREEN ASS’Y

Remove the SPEAKER GRILLE.

Remove the FRONT CONTROL BOX.

1. Remove 4 screws G under the SCREEN ASS’Y from fron t side.

2. Remove 10 screws H from rear side.

3. Remove the SCREEN ASS’Y. :

NOTE

Place the screen with face upwards on a flat stand.

Because of the large size, at least two parsons are

recomm en ded for rem ov al an d reas sembl e.

Use core not to scratch the screen during work.

Duri ng assembl y, be sur e to eng age the l eft and ri ght tabs

with the cabinet mounting positions.

When than s port ing the SC REEN ASS’ Y, avoid gr aspi ng th e

top of the screen panel, instead grasp the left and right areas.

MIRROR

Remove the SPEAKER GRILLE.

Remove the FRONT CONTROL BOX.

Remove the SCREEN ASS’Y.

1. Remove 2 screws I attaching the mirror stopper.

2. Raise slightly to disengage of the mirror from the hooks.

3. Remove the MIRROR. :

NOTE

T he M IRROR is front-coated . Do not touch t he front of the

MIRROR.

At least 2 persons are recommended for removable and

reassemble.

ＧＧＧＧ

SCREEN ASS’Y

HOOKS

MIRROR

REAR PANEL

1. Loosen 7 screws

2. Remove 4 screws K.

3. Raise slightly REAR PANEL upward.

4. Remove the REAR PANEL. :

NOTE

B efor e the rear p anel is ins ert ed in to the c abi n et, rel eas e th e

short-cir cuit b etween the S B conn ector ( 1) pin an d (2) pin of the digital input unit

Af ter releasing t he short-circ uit bet ween the SB c onnectors,

do not turn the power on until the rear panel is ins erted into the cabinet

PA RTITION

Remove the REAR PANEL.

1. Pull out the PA R T I T IO N back war d.

REAR COVER

Remove the SPEAKER GRILLE.

Remove the FRONT CONTROL BOX.

Remove the SCREEN ASS’Y.

1. Remove 2 screws L.

2. Remove 2 screws M from front side

3. Sligh tly pull for back side to di se nga ge of the REAR C OVER from

hooks.

4. Remove the REAR COVER.

MIRROR STOPPER

PARTITION

BRACKET

REAR COVER

REAR PANEL

No. 51914

MAIN UNIT

Remove the SPEAKER GRILLE.

Remove the connector BH

FRONT CONTROL PWB.

Remove the REAR PANEL.

1. Remove 4 screws

2. Pull out th e MAIN UNIT rear side.

NOTE :

Except for confirmation of projection of images on the screen

and audio output thr ough the speakers , the removed main unit is still workable in the same state as if it is still built in the TV set. Therefore, the main unit can be removed, if necessary, for board diagnosis, electric testing, etc. apart from conf ir m ati on of screen im ag es and audio output.

When wire clamps are removed during work, use care to

restore them precisely to their original positions. Perf ormanc e can be aff ect ed if these ar e not ret urn ed to t he original positions.

Because of the large size, at least two persons are

recomm en ded for rem ov al an d reas sembl e.

W hen carr yin g th e m ain un it, us e c ar e n ot to dr op, s h ock or

shake it.

D o not stain or damag e the l ens of the projection unit.

Do not look through the projection unit.

CHECKING THE P.W. BOARD

When checkin g th e M AIN PWB, POWER & DEF PW B, etc., raise the MAIN UNIT with the DIVIDER side down for the sake of convenience. You can checking the MAIN P.W.B.

from front side.

, X , R , BG on the

EARTH WIRE

MAIN UNIT

V-48WP30

LINE FILTER BRACKET

LINE FILTER P.W. BOARD

Remove the REAR PANEL.

Remove the AV JACK BOARD.

1. Disconnect the connector BOARD.

2. Remove 3 sc rews P attach ing th e LI NE F ILTE R BR ACK ET and earth wir e.

3. Remove 2 screws Q attaching LINE FILTER P.W. BOARD.

4. Remove the LINE FILTER P.W . BOARD.

MAIN CHASSIS

Remove the REAR PANEL.

Remove the AV JACK BOARD.

R emove the LINE FILTER BR ACKET .

1. Remove 2 screws R both side of the MAIN CHASSIS.

2. Remove 1 screws

3. Pull out the MAIN CHASSIS for back sid e.

NOTE

If necessary, remove the anode wires, connectors,

respectively.

R’

B F on the LI NE FILTE R P.W .

attaching the earth wire.

LINE FILTER P.W.BOARD

LINE FILTER BRACK ET

EARTH WIRE

MAIN CHASSIS

R’

No. 51914

V-48WP30

PROJECTION UNIT

Remove the SPEAKER GRILLE

Remove the FRONT CONTROL BOX

Remove the REAR PANEL

R emo ve the MAIN UNIT .

1. Remove the CRT SOCKET PWB.

2. Remove 4 screws S attaching the PROJECTION UNIT.

3. Pull out the PRO J EC T IO N UNIT, upwar d. :

NOTE

Refer to “PROJECTION UNIT REPLACEMENT” on

page 8 when tak ing out and repl ac ing the PROJE CTION UNIT.

When wire clamps are removed during work, use care to

restore them precisely to their original positions. Perf orm ance can be affected if th es e are not r etur ned to the origin al positions .

HV DIVIDER

Remove the REAR PANEL

1. Remove 1 screws

2. Remove the HV DIVIDER.

Wires of the transformer (FBT) and CRT of each PROJECTION

UNIT can be removed by turning the connector portions.

NOTE

If nec essary, remove the anod e w ir es, an d replacing the

HV DIVIDER, take care to correctly engage the

connector.

!!!!

AV JACK BOARD

Remove the REAR PANEL

1. Remove 7 screws V.

2. Pull out the POWER CORD C LAMP f r om AV J ACK BOARD l eft

side.

3. Remove nut

4. Remove the AV JACK BOARD.

attaching the DIVIDER.

!!!!

attaching the antenna terminal.

!!!!

PRO J E CTION UN I T

HV DIV IDER

TurnPull

DIGITAL INPUT

MODULE

ANTENNA TERMINAL

AV JACK BOARD

DIGITAL INPUT MODULE

Remove the REAR PANEL

1. Remove 2 screws X from rear side of the AV JACK BOARD.

2. Remove the DIGITAL INPUT MODULE.

POWER CORD CLAMP

No. 51914

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 aft er rem oving it.

SOLDERING IRON

1. Use a high ins ul ation sold erin g iron with a thin p oint ed end of it.

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

REPLACEMEN T STEPS

How to remove Chip parts

1. Resistors, capacitors, etc

####

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

alternately melt th e s older at each end.

(2) Shif t wi th tweezers an d r em o ve the chip part.

Transistors, diodes, variable resistors, etc

####

(1) Apply extra solder to each lead.

V-48WP30

2. How to i n stal l Ch ip p arts

Resistors, capacitors, etc

####

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

(2) Grasp th e chip part wit h twe ezers and plac e it on t he s older.

Then heat an d m elt t h e s old er at b oth en ds of th e chip part .

Transistors, diodes, variable resistors, etc

####

(1) Apply solder to the pattern as indicated in the figure. (2) Grasp the chip part with tweezers and place it on the solder. (3) First solder lead

as indicated in the figure.

SOLDER

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

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

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

pattern.

SOLDER

No. 51914

(4) Then solder leads

C and C.

V-48WP30

MEMORY IC REPLACEMENT

1. Memory IC

This model use a memory IC. This mem ory IC s tores dat a for prop er oper ation of th e vid eo and deflection circuits. When rep lacing, be sure to use an IC c ontaining this (i nitial value) data.

2. Memory IC replacemen t pro cedu re

(1) Power off

Switch off the power and disconn ect the power c ord from the wall out l et.

(2) Replac e the me mo ry I C

Initial val ue must be ent ered into the new IC .

(3) Power on

Connect the power cord to the wall outlet and switch on the power.

SERVICE MENU

1.PICTURE/SOUND 7.I2C BUS

2.YC SEP 8.PP

3.LOW LIGHT 9.IP

4.HIGH LIGHT 0.SELF-CHK

5.RF AFC

Fig.1

SERVICE MENU SELECT KEY

(4) SERVICE MENU setting

1) Press

SLEEP TIMER SLEEP TIMER 0 MIN DISPLAY

key and

key and, while the indication of

is being displayed, press

VIDE O S TAT US

key on the r emote

control unit (Fig.2) simultaneously.

2) The SERVICE MENU screen of Fig.1 is displayed.

3) Verify what to set in the SERVICE MENU, and set whatever is necessary (Fig.1). Refer to the SERVICE ADJUSTMENT for setting.

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

(5) Rec eive channel setting

Refer to the OPERATING INSTRUCTIONS (USER’S GUIDE) and set the receive channels (Channels Preset) as described.

(6) User settings

Check th e us er s ett ing items according to after page. Where these do not agree, refer to the OPERATING INSTRUCTIONS (USER’S GUIDE) and set the items as described.

DISPLAY

SLEEP TIMER

VIDEO

STATUS

MEMORY (MUTING)

VALUE SELECT(－)

FUNCTION

POWER

NUMBER

ITEM SELECT(▲)

VALUE SELECT(＋)

EXIT

ITEM SELECT(▼)

Fig.2

No. 51914

SHIPPING FACTORY SETTING

VIDEO STATUS MEMORY (NTSC / 480p)

Item

TINT COLOR PICTURE BRIGHT DETAIL

STANDARD 00 00 00 00 00

THATER 00 00 00 00 00

DYNAMIC 00 00 +10 00 +1

(HD)

Item

TINT COLOR PICTURE BRIGHT DETAIL

STANDARD 00 00 00 00 00

THATER 00 00 00 00 00

DYNAMIC 00 00 +2 00 00

CHANNEL SETTING (CHANNEL SUMMARY)

BAND CH Display Setting BAND CH Display Setting

○

03 O 28

VHF

04 05 06 07

○

08 T 33

VHF

10 V 35 11

○

12 A-7 93

UHF

MID

13 14 36 41 A-3 97 46 A-2 98 63

69 A14 B15 C16 D17 E18

○

F19

G20 W+29 H21

○

I22 W+51

J23

SUPER

K24

L25

○

M26

SETTI NG VALUE

SUPER

SUBMID

HYPER

ULTRA

N27

P29 Q30 R31 S32

U34

W36

A-6 394 A-5 95 A-4 96

A-1 99

A-8 01 W+11 47 W+12 48 W+17 53

W+23 59

W+78

W+84

V-48WP30

○

No. 51914

V-48WP30

SHIPPING FACTORY SETTING

(USER SETTING)

Setting item Setting value Setting item Setting value

POWER CHANNEL BBE VOLUME INPUT

OFF CABLE-02 ON 10 TV

TINT / COLOR / PICTURE /BRIGHT / DETAIL

COLOR TEMPERATURE DIG. NOISE CLEAR

Refer to setti n g o f Video status m em or y at shi pping factory setting

HIGH CENTER

DISPLAY NATURAL CINEMA SLEEP TIMER ASPECT VIDEO STATUS

HYPER SURROUND OFF MTS STEREO

SPLIT SOURCE

POP SOURCE

VERTICAL POSITION CENTER CH INPUT XDS ID CONVERGENCE POWER INDICATOR

OFF AUTO 0 REGULAR DYNAMIC

LEFT SIDE : CH 02 RIGHT SIDE : CH 04

LEFT SIDE : CH 02 RIGHT UPPER : CH 04 RIGHT CENTER : CH 05 RIGH T BOTTOM : CH 07

CENTER OFF ON OPTIMUM CONDITION HIGH

NOISE MUTING BASS / TREBLE / BALANCE

SET CLOCK ON / OFF TIMER LANGUAGE CLOSED CAPTION FRONT PANEL LOCK

AUTO SHUT OFF AUTO TUNER SET UP DIGITAL-IN ( at 480p signal input ) CHANNEL SUMMARY

V-CHIP SET LOCK CODE AUTO DEMO

ON CENTER

Unnece ssary to set NO ENG OFF ( CC1 / T1 ) OFF

OFF Unnece ssary to set SIZE 1

Refer to Last memory (CH. summary) OFF Unnece ssary to set OFF

No. 51914

SERVICE ADJUSTMENTS

V-48WP30

ADJUSTMENT PREPARATION

1. You can make the necessary adjustments for this unit with either the Remote Control Unit or With the adjustment tools and parts as give n belo w.

Adjustment with the Remote Control Unit is made on t he basis of the initial setting values, h owever, the new setting values wh ich s et t he scree n t o it s op timu m condi tion may differ from the initial settings.

3. Make sure that AC power is turned on correctly.

4. Turn on t he power for set and test eq uipm ent bef ore us e, 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 setting value which are not specified in the list for this adjustment.

7. Preset ti ng b efore adjust m ent Unless otherwise specified in the adjustment instructions, preset the following functions with the remote control unit:

ADJUSTMENT EQUIPMENT

1. DC voltmeter (or digital voltmeter)

2. Oscilloscope

3. Signal generator (Pattern generator) NTSC / 480i / 480p / 720p / 1080i / HDCP

［

4. Remote control unit

5. TV audio multiplex signal generator

6. Frequency counter

ADJUSTMENT ITEMS

Adjustment items

1Check (×4) 2 FOCUS & B EAM SP OT adjustment

3 CONVERG ENCE & DEFL EC TION a dj u stment 4 VIDEO adj us tment 5 MTS adjus t m en t

SETTING POSITION

SETTING ITEM SETTING POSITION SETTING ITEM SETTING POSITION

VIDEO STATUS STANDARD ASPECT FULL BASS, TREBLE, BALANCE CENTER VERTICAL POSITION CENTER

HYPER SURROUND OFF BBE ON TINT, COLOR, PICTURE,

BRIGHT, DETAIL COLOR TEMPERATURE HIGH AUTO SHUTOFF OFF

DIGITAL NOISE CLEAR CENTER

CENTER ON/OFF TIMER NO

］

ADJUSTMENT FLOWCHART

WHEN REPLACING SCREEN AND PROJECTION UNIT

Contains only the main adj us tm en t s . Als o c onfirm other adj us tm ents as required.

●

No. 51914

V-48WP30

ADJUSTMENT LOCATION (1/2)

CONVERGENCE PWB

IC 805 IC 804

B G R

R/G/B CRT SOCKET PWB

MAIN PWB

FRONT

LINE FILTER PWB

S 801

SERVICE

SWITCH

CONVERGENCE OSD PWB

DIGITAL CONVERGENCE MODULE PWB

CN00M

CN010

TUNER (TU101)

CN00Y

CN00P CN00X

FRONT I/F PWB

BG BH

G H

RECEIVER PWB

DIG I TAL IN PUT PW B

FRONT

CONVERGENCE OSD PWB

TOP

IC701

CPU

FRONT CONTROL PWB

POWER POWER SW

BG R X BH

CN001

MEMORY IC

IC703

CN002

CN003

LED

CH - CH + VOL - VOL +MENU

INPUT 3

REMOCON SENSOR PWB

POWER/DEF PWB

G VM PWB

G CRT SOCKET PWB

CN010

1Pin : L 2Pin : R 3Pin : GND 4Pin : SOA 5Pin : NC

POWER CORD

TUNER

I-P CONVERT. MODULE PWB

DIGITAL INPUT

PWB

V JACK PWB

DC SY Q2 AJ

CN007

No. 51914

CN006

DEF OSC PWB

ADJUSTMENT LOCATION (2/2)

REAR

TOP

MAIN PWB

AV JACK PWB

V-48WP30

DIGITAL INPUT MODULE PWB

DVI-D terminal

FOCUS PACK

MAIN PWB

SB CONNECTOR

LINE FILTER PWB

CRT SOCKET PWB

RGK

TP-E TP-R

R CRT SKT PWB G CRT SKT PWB B CRT SKT PWB

CN001

SG001

GBK RGK

TP-E TP-G

SG001

POWER / DEF PWB

GBK

SG001

TP-E TP-B

IC701

CPU

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

MEMORY IC

IC703

CN002

G VM PWB

DEF OSC PWB

CN003

CN010

RHV GHV

BHV

FBT

No. 51914

V-48WP30

(

)

BASIC OPERATION OF SERVICE MENU

TOOL OF SERVICE MENU OPERATION

Operate the SERVICE MENU with the REMOTE CONTROL UNIT.

SERVICE MENU ITEMS

In general, basic setting (adjustments) items or verifications are performed in the SERVICE MENU.

1. PICTURE / SOUND

2. YC SEP

････････････････････

3. LOW LIGHT

4. HIGH LIGHT

5. RF AFC

････････････････････

･･････････

･････････････････

････････････････

6. (BLANK)

7. I2C BUS

8. PP

9. IP

0. SELF-CHK

････････････････････

･････････････････････････

･･････････････････････････

･･････････････････

3. BASIC OPERATIO NS OF THE SERVICE MENU

(1) How to enter the SERVICE MENU.

Press

SLEEP TIMER TIMER 0 MIN. VIDEO STATUS

to enter th e

SERVICE MENU

(2) SERVICE MENU screen selection

Press th e nu mb er k ey t o sel ec t an y of t h e foll ow i ng items.

1.PICTURE/SOUND 7.I2C BUS

2.YC SEP 8.PP

3.LOW LIGHT 9.IP

4.HIGH LIG HT 0. SELF-CHK

5.RF AFC

key and, whil e the indic ation of “

” is being displayed, press

key on the remote control unit simultaneously

This sets the setting values of the VIDEO/CHROMA /AUDIO and DEFLECTION circuits. This is used when the YC mode is adjusted.

[Do not adjust]

This sets the setting values of the WHITE BALANCE circuit. This sets the setting values of the WHITE BALANCE circuit. This is used when the IF VCO is adjusted.

This is used when ON/OFF if the I

[Do not adjust]

C BUS control is stop. This sets the setting value of the output of P&P data. This sets the setting value of the IP circuit.

[Do not adjust]

This sets the self checking of the TV circuit.

SLEEP

DISPLAY

key and

screen as sh own in t h e fig. 1.

KEY FUNCTION of SERVICEMENU

[Do not adjust]

SERVICE MENU

1. PICTURE/SOUND

2. YC SEP

3. LOW LIGHT

4. HIGH LIGHT

5. RF AFC

Fig. 1

7. I2C BUS

8. PP

9. IP

0. SELF-CHK

(3) Enter the any setting mode

1. PICTURE / SOUND mode

1) S el ec t the 1. PICTURE / SOUND items with the number key, and the FUNCTION (▲/▼) key is pressed the 1. PICTUR E / SO U ND mode, the scr een w il l b e dis p layed as shown in figure page later.

2) Then the sett in gs or verificati ons c an be performed.

2.YC SEP, 3.LOW LIGHT, 4.HIGH LIGHT, 5.RF AFC,

7.I

C BUS, 8.PP, 9.IP and 0.SELF-CH K mode

1) If you select any of 2.YC SEP 3.LOW LIGHT 4.HIGHLIGHT 5.R F A FC 7 .I

C BUS, 8.PP , 9.I P an d 0.SE LF-C HK mode items, and the numbers key is pressed from SERVICE MENU, the each screens will be displayed as shown in figure page later.

2) Then the settings or verifications can be performed.

No. 51914

DISPLAY

key

SLEEP TIMER

key

MUT I N G key

MENU key

FUNCTION key

& (

▲/▼

NUMBERS

key

VIDEO STATUS

key

EXT key

(PIP OFF)

Select the setting value

Select the setting Item

V-48WP30

Function

(

Function (

▲/▼

) key

SERVICE MENU

1. PICTURE/SOUND

2. YC SEP

3. LOW LIGHT

4. HIGH LIGHT

5. RF AFC

7. I2C BUS

8. PP

9. IP

0. SELF-CHK

1.PICTURE/SOUND

NTSC

***** *****

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

A01 001

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

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

A01

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

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

S01

*********

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

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

A16

～～～～

A01

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

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

S57

～～～～

LOW

4.HIGH LIGHT

HW-BAL

*** ***

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

5.RF AFC

TUNER AFC FINE

** **

***

*** ***

7.I2C BUS

Press th e 0 key → ON/OFF

DO NOT ADJUST

YC001

～

～～

～

YC007

S01

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

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

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

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

D01

D20

～～～～

D01

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

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

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

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

F01

F64

～～～～

F01

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

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

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

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

2.YC SEP

YC001

********** *

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

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

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

3.LOW LIGHT

LW-BAL

*** *** ***

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

I2C

***

*** ***

8.PP

PPA001

***

*** ***

9.IP

NTSC PIP

IP001 NTSC OFF FRAME 0

*****

***** *****

LOW

0.SELF-CHK

NG2

LOB

SYNC

M:OK

MEM

VCD

NG2

AIO

TUN

NG4

OCP TIM S:OK AVSW BS YC OK OK

NG2 OK HD:NG OK OK OK OK OK

PPA001

008

～～～～

PPB001

036

～～～～

PPC001

007

～～～～

ADM001 ADS001 VCM001 VCS001

034

～～～～

034

～～～～

038

～～～～

041

～～～～

DO NOT ADJUST

IPA001

120

～～～～

IPB001

088

～～～～

IPC001

044

～～～～

IPD001

058

～～～～

IPE001

015

～～～～

Press the 0 key → ON/OFF

No. 51914

V-48WP30

(

(▼)

(4) Setting method

1) UP / DOWN (▲/▼) FUNCTION key Select the SETTING ITEM.

2) LEFT / RIGHT ( / ) FUNCTION key Setting ( ad jus t) th e s ett i ng v al u e of th e SET T IN G ITE M . When the MU T I NG key is pressed th e setting valu e will be stored (memorized).

3) EXIT key

Returns to the previous screen.

(5) Releasing SERVICE MENU

1) After returning to the SERVICE MENU upon completion of the setting work, press the EXIT key again.

SIGNAL SYSTEM

SPECT

SIZE

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

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

SETTING A01 ITEM D01

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

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

1.PICTURE/SOUND

NTSC

FULL

DYNAMIC

A001

001

A16 / S01

～～～～

D20 / F01

～～～～

OFF

S57

～～～～

F64

～～～～

2.YC SEP

YC001

***

*** ***

FRAME

LOW

WHITE BALANCE

VIDEO STATUS

SETTING VALUE

DO NOT ADJUST

SETTING ITEM

YC001

YC107

～～～～

SETTING VALUE

WHITE BALANCE setting

The setting for 3.LOW LIGHT and 4.HIGH LIGHT are described in the WHITE BALANCE pag e of ADJUSTMENT .

WHITE BALANCE key function

R.CUT OFF R.DRIVE

(▲)

MEMORY

MUTING

MENU ke

FUNCTION key

(▲/▼) & ( / )

Select the setting value Select the setting Item

G.CUT OFF

B.CUT OFF B.DRIVE

W.BALANCE

SETTING VALUE

(ON or OFF)

EXIT key

(▲) (▼)

(▲)

WHITE BALANCE

3.LOW LIGHT

LW-BAL

*** *** ***

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

4.HIGH LIGHT

HW-BAL

*** ***

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

5.RF AFC

SETTING ITEM

Setting Value

・・・・

B.CUT OFF VALUE G.CUT OFF VALUE R.CUT OFF VALUE

SETTING ITEM

Setting Value

・・・・

B.DRIVE VALUE

Setting Value

・・・・

R.DRIVE VALUE

DO NOT ADJUST

NOTE)

TUNER 2 AFC ON FINE

***

******

(

TUNER 1(MAIN)/2(SUB) AFC Select ON/OFF FINE Fine Tuning(-77

AFC ON :Aut o Setting

+77)

～～～～

No. 51914

V-48WP30

8.PP

SETTING ITEM

PPA001

PPA008

～～～～

PPB001

PPB036

～～～～

PPC001

PPC007

～～～～

PPA001

***

*** ***

ADM001

SETTING VALUE

ADM034

～～～～

8.PP / 9.IP setting

1) FUNCTION(▲/▼) key

2) FUNCTION ( / ) key

3) SLEEP TIMER key

4) MUTING Key

5) EXIT key

････････････････････････････････

･･･････････････････････

････････････････････････････

･････････････････････

････････････････････

Select the setting Item Select the setting value. Skip the each setting Item. Setting value will be stored. Ret urns to the service menu.

* Press the EXIT key again, then releasing the service menu.

0.SELF-CHK DISPLAY

Press 0 key of remote control that checks the circuit operating status and in event of malfunction displays stores the data in memory. (shown in figure)

NTSC PIP

IPA001

RAY LOB SYNC MEM VCD AIO TUN PP

9.IP

******

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

OFF FRAM

***

*** ***

0.SELF-CHK

OCP

TIM

M:OK

S:OK

AVSW

NG2

GCR

NG4

NG2 OK HD:NG OK OK OK OK OK

***

*** ***

DO NOT ADJUST

SETTING ITEM

IPA001

IPA120

～～～～

IPB001

IPA088

～～～～

IPC001

IPC044

～～～～

IPD001

IPD058

～～～～

IPE001

IPE015

～～～～

SETTING VALUE

No. 51914

V-48WP30

INITIAL SETTING VALUE OF SERVICE MENU

1. Adjustment of the SERVICE MENU is made on the basis of th e in itial setting values; however, the new setting values which set the screen in its opt imum condition may dif f er fr om t h e init ial setting.

2. Do not change the initial setting values of the setting items NOT LISTED IN ADJUSTMENT.

3. The (*1 or *2)mark ed it ems i n follow in g tab le, it is NO R EQU IRE MENT for adj ustm ent. If valu es h ad ch ange by th e mis si ng, s et the

initial values in the following table.

CAUTION

Never change

the initial setting value any adjustments

except

for those that are designated in the adjustment proc edur es. In case where you have made undesignated adjustments by mistake, never press the MUTING key on the remote contr ol unit. Whenever you had not pressed the MUTING key , you would be able to recover the initial value by switching the POWER SW (on/off) key.

1. PICTURE / SOUND

■■■■

SOUND SYSTEM

Item

No.

A01 NOISE DET. 0 / 1 000 A09 5TH MON 0 / 1 000 A02 INPUT LEVEL A03 FH MONITOR 0 / 1 000 A11 INPUT GAIN 0 / 1 000 A04 STEREO VCO A05 PILOT CAN 0 / 1 000 A13 BBE BASS A06 FILTER A07 LOW SEP A08 HI SEP

■■■■

DEFLECTION SYSTEM

Item

No.

D01 V.HEIGHT D02 EW PARABORA D03 H.WIDTH 0～63 051 D13 ADJUSTMENT 0～15 000 D04 V.S-CORR

D05 V.LINEARITY D06 V.CENTER

D07 TRAPEZIUM D08

D09

D10 V.EHT

Item name

EW CORNER LOWER

EW CORNER UPPER

Variable

range

0 ～ 63

0 ～ 63 0 ～ 63 0 ～ 63

Variable

range

127

～

15 008 D18

～

15 008 D19

～

Initial settin g

value

027 A10 SAP VCO

035 A12 FIL OFFSET

032 A14 BBE TREBLE 027 A15 BASS 028 A16 TREBLE

Initial settin g

value

027 D11 H EHT 022 D12 EHT GAIN

040 D14 H CENTER 039 D15 023 D16 H. BLK

029 D17 OSD OFFSET

003 D20

Item

No.

Item

No.

HORI FREQ ADJUSTMENT

COMPULSION TWIN SCREEN

COMPULSION DEF RST OUTPUT

COMPULSION 1080i

Item name

Variable

range

0 ～ 63

-128 ～ +127

Variable

range

0～7 0～7

0～255 0

255

～

0～255 0～127

7000

～

1000

Initial settin g

value

035

000

+007

000

-012

-008

value

001 002

172 141 080

044

No. 51914

■■■■

PICTURE SYSTEM

( NTSC / 480i / 480p )

Item

No.

S01 SUB COLOR 0～127 078 058 078 058 080 062 S02 SUB TINT

(1/2)

Item name

Variable

range

127

～

Standard Theater Standard Theater Standard Theater

NTSC 480i 480p

078 069 078 069 070 060

V-48WP30

( 720p / 1080i / HDCP )

Item

No.

S01 SUB COLOR 0～127 065 060 070 069 059 058 S02 SUB TINT

( NTSC / 480i )

Item

No.

S03 S04

S05 S06

( 480p / 720p / 1080i / HDCP )

Item

No.

S03 S04

S05 S06

Item name

SUB BRIGHT 0～255 SUB CONTRAST 0～127

SUB BRIGHT OFFSET

SUB CONTRAST OFFSET

Item name

SUB BRIGHT 0～255 SUB CONTRAST 0～127

SUB BRIGHT OFFSET

CUB CONTRAST OFFSET

Variable

range

127

～

Variable

range

-128～127

Variable

range

-128～127

720p / 1080i HDCP

Standard Theater

078 063 070 074 070 066

NTSC 480i

Standard Theater Standard Theater

134 133 134 133

079 045 079 045

－－－－

480p / 720p / 1080i HDCP SPLIT / FREEZE

Standard Theater Standard Theater Standard Theater

132 134 082 047

－－

Standard Theater Standard Theater

480p 1080i / 720p

－－－－

000 000 000 000 000 000 -010 000

(2/2)

(1/2)

(2/2)

( NTSC / 480i / 480p / 720p / 1080i / HDCP )

Item

No.

S07 S08 S09

Item name

B-Y DEMODURATION

R-Y DEMODULATION

G-Y MATRIX SW

Variable

range

0～63 005 002 005 002 020 048 011 020

0～7 007 000 007 000 007 000 003 000 0～3 001 003 001 003 003 003 002 003

NTSC 480i 480p 720p / 1080i / HDCP

Standard Theater Standard Theater Standard Theater Standard Theater

No. 51914

V-48WP30

( NTSC / 480i)

Item

No.

S10 S11 S12 S13

( 480p / 720p / 1080i )

Item

No.

S10 S11 S12 S13

( HDCP )

Item

No.

S10 S11 S12 S13

(1/3)

Item name

R DRIVE 0～255 R DRIVE OFFSET -128～+127 B DRIVE B DRIVE OFFSET -128～+127

Item name

R DRIVE 0～255 R DRIVE OFFSET B DRIVE 0～255 B DRIVE OFFSET -128～+127

(3/3)

Item name

R DRIVE R DRIVE OFFSET -128～+127 B DRIVE 0～255 B DRIVE OFFSET

Variable

range

Standard Theater Standard Theater

High Low High Low High Low High Low

NTSC 480i

－

080

－－－

080

－－

+003 000 000 +008 +003 000 000 +008

0～255

－

074

－－－

074

－

000

+006 000 000 -025 +060 000 000 -025

(2/3)

Variable

range

-128～+127

Variable

range

0～255

-128～+127

Standard Theater Standard Theater

High Low High Low High Low High Low

－－－－－

000 000 000 000 +004 000 000 +007

－－－－－

000 000 000 000 +006 000 000 -008

Standard Theater

High Low High Low

－－－－

+004 000 000 +005

－－－－

+005 000 -010 -023

480p 720p / 1080i

145

150

HDCP

－－

( NTSC / 480i / 480p / 720p / 1080i )

Item

No.

S14 S15 S16 S17 S18 S19 S20 S21

Item name

R CUT OFF 0～255 R CUT OFF

OFFSET G CUT OFF 0～255 G CUT OFF

OFFSET B CUT OFF 0～255 B CUT OFF

OFFSET R CUT OFF SW 0～3

B CUT OFF SW 0～3

Variable

range

-128～+127

-128～127

-128～+127

NTSC 480i 480p / 720p / 1080i HDCP

Standard Theater Standard Theater Standard Theater Standard Theater

211

－

211

－

215

－－－

000 +003 000 +003 000 -001 000 +007 050

－

050

－

050

－－－

000 000 000 000 000 000 000 000 052

－

052

－

059

－－－

000 +004 000 +004 000 -003 000 +005 000 001

－

000 001

－

000 001

－－－

No. 51914

( NTSC / 480i / OTHERS SIGNAL)

Item

No.

S22 S23 S24 S25 S26 S27

Item name

BLACK GRAD CORR START LEVEL

BLACK GRAD CORR GAIN

WHITE GRAD CORR START LEVEL

WHITE GRAD CORR GAIN

WHITE CHARA CORR START LEVEL

WHITE CHARA CORR GAIN

Variable

range

0～15

NTSC 480i

OTHERS

SIGNAL

015 015 015 008 008 008 000 000 000 015 015 015 002 002 000 000 000 000

V-48WP30

Item

No.

S28 S29 S30 S31 S32 S33 S34

( NTSC / 480i / 480p / 720p / 1080i / HDCP )

Item

No.

S35

Item

No.

S36

Item name

ABL GAIN

ABC START

ACL GAIN

ACL START

CONTRAST LINK 0 / 1 BLACK GRADIATION

CORRECTION OFF WHITE GRADIATION

CORRECTION OFF

Item name

TINT HD / NTSC 0 / 1

Item name

ABL OFF 0 / 1

Variable

range

0～15

Variable

range

Variable

range

0 / 1

Standard Theater

015 015 015 008 015 000 000 015 000 000 000 001 000 001

NTSC / 480i 480p 720p / 1080i

480p 720p / 1080i

HDCP

001 001 001 001 001

Standard Theater

000 000

ACL OFF 0 / 1

S37

DC TRANSMIT

S38

POLARITY DC TRANSMIT CORR 0 / 1

S39

BLAKING ON / OFF 0 / 1

S40

( NTSC / 480i / OTHERS )

Item

No.

S41

Item

No.

S42

Item name

DC REPRODUCE RATE

Item name

ACL CONTROL 0～255

0 / 1

Variable

range

0～255

Variable

range

Standard Theater Standard Theater Standard Theater

000 000 001 000 000 000 000 000

NTSC 480i OTHERS SIGNAL

160 140 160 140 160 72

SPLIT Regular Theater

OTHERS

SIGNAL

160 072 072 072

No. 51914

V-48WP30

Item

No.

S43 S44 S45

( NTSC / 480i / OTHERS )

Item

No.

S46 S47

( ALL SIGNAL )

Item name

CONTRAST LOWER LIMIT

CONTRAST UPPER LIMIT

BRIGHT LOWER LIMIT

Item name

EE THEATER BRIGHT

EE THEATER CONTRAST

Item

No.

S48 S49 S50 S51 S52

BRIGHT EE CONT. CORRECTION REFRAIN EE

CONT. CORRECTION REFRAIN EE BRIGH OFFSET

CORR (MAX) BRIGHT EE ACL CORR. COEFF. 0～255

REFRAIN EE ACL CORR. COEFF. 0～255

Item name

Variable

range

-128～+127

Variable

range

-128～+127

Setting Value

Standard Theater

-070 -127 +017 +127

-020 -127

NTSC 480i

000 000 000 000 000 000

Variable

range

0～31

0～127

Setting

value

008 027 004 085 140

OTHERS

SIGNAL

S53 S54 S55 S56 S57

No use 0 / 1

000 000 000 000 000

No. 51914

V-48WP30

(

)

■■■■

OTHERS

Item

No.

F01 EEPROM Ver 1 0～255 051 F32 DIRECT SELECT 2 PIC. 0 / 1 000 F02 EEPROM Ver 2 0～255 001 F33 F03 H.LINE ON (BRIGHT) 0～255 133 F34 F04 H.LINE OFF (BRIGHT) 0～255 140 F35 F05 H.LINE CONTRAST 0～127 000 F36 F06 C38 / C41 SW 0 / 1 001 F37 F07 MODEL SELECT 0～255 000 F38 F08 F39 VSM SHIPPING MODE 0 / 1 000 F09 AUTO SCROLL ADJUST 1 0～15 002 F40 DVD 0～3000 F10 AUTO SCROLL ADJUST 2 0～15 004 F41 F11 AUTO SCROLL ADJUST 3 0～15 004 F42 F12 AUTO SCROLL ADJUST 4 0～15 005 F43 POWER OFF WHITE 0 / 1 000

Item name

Variable

Range

Setting

Value

Item

No.

Item name

CAPTION OSD OSCSELECT 4 PIC. HIGH SPEED SEARCH 4 PIC. AGC REFLESH 4 PIC. HIGH SPEED WAIT 1 4 PIC. HIGH SPEED WAIT 2 4 PIC. HIGH SPEED WAIT 3

2 PICTURE 16:9 MODE V/C DECODE H.MASK SETTING

Variable

Range

0～7002 0～255 040 0～255 000 0～255 040 0～255 020 0～255 040

0 / 1 000

0 / 3 000

Setting

Value

F13 AUTO SCROLL ADJUST 5 0～15 006 F44 WHITE BACK ON/OFF 0 / 1 000 F14 AUTO SCROLL ADJUST 6 0～15 007 F45 F15 AUTO SCROLL ADJUST 7 0～15 007 F46 F16 Not use 0 / 1 000 F47 F17 Not use 0 / 1 000 F48 F18 Not use 0 / 1 000 F49 F19 Not use 0 / 1 000 F53 S / N (RF) CORR.WIDTH 0～255 000 F20 Not use 0 / 1 000 F54 S / N (RF) CORR.START 0～255 000 F21 Not use 0 / 1 000 F55 S / N (BS) CORR.WIDTH 0～255 000 F22 Not use 0 / 1 000 F56 S / N (BS) CORR.START 0～255 000 F23 Not use 0 / 1 000 F57

V-CHIP ON/OFF (CANADA)

F24

EARTH MAGNETIC

F25

CORR. PICTURE OSD OFFSET

F26 F27 F28 F29 F30 PIP 2 PICTURE 0 / 1 000 F64 F31 V.CHIP ON OFF 0 / 1 001

480p / 720p) (HDCP / 480

OSD OFFSET

1080i / HDCP1080i CH.PROGRAM SEARCH CYCLE PIP FUNCTION ON / OFF

0 / 1 000 F58

0～127 127 F59 S / N (S) CORR.WIDTH 0～255 000

0～63 033 F60 S / N (S) START 0～255 000 0～63 018 F61 OCD OFFSET (HORI.) 0～127 048

0～255 011 F62 ATT GAIN 0 / 1 000

0 / 1 000 F63 V.HEIGHT OFFSET -128～+127 000

S / N (COMP.) CORR.WIDTH S / N (COMP.) CORR.START

TEXT MODE CONT.CORR.

0～255 000 0～255 000

-128～+127 000

No. 51914

V-48WP30

SIZE 2

Setting Value

HDCP720p HDCP1080i

Item

No.

F50 SEP.LEVEL 0～3 000 002 002 002 002 F51 CLAMP PLUS 0 / 1 000 000 000 000 000 F52 HD PHASE

Item

No.

F50 SEP.LEVEL F51 CLAMP PLUS 0 / 1 000 000 000 000 F52 HD PHASE

Item name

Variable

Range

0～63

Variable

Range

0～3

0～63

NTSC 480i 480p 1080i 720p

038 035 026 039 024

HDCP 480p

SIZE 1

002 002 002 002

042 017 047 044

HDCP 480p

(1/2)

(2/2)

No. 51914

ADJUSTMENT

CHECK ITEMS

Item

B1 POWER SUPPLY check

Signal generator DC Vol tmet e r

Measuring Instrument

Test point Adjustment Item Description

S1 connector 5 pin:TP-91 1 pin:TP-E

(

)

1. Rec eive a bl ac k and whit e sig n al (c ol or off).

2. C onnect the DC volt meter to S1 conn ector 5 pi n (TP-

91) and TP-E(

3. Confirm that the voltage is DC140V±2V.

) (S1 connector 1 pin).

####

V-48WP30

HIGH VOLTAGE check

X-RAY PROTECTOR check

H.FREQUENCY check

Signal generator High Voltage

meter

Resistor

6.8k

1/6W

ΩΩΩΩ

±±±±

Signal generator

Remote control unit

CRT Anode

S1 connector 2 pin:X-Ray2 3 pin:X-Ray1

D15 : H.FREQ. D19 : DEF.RST

1. Rec eive a w hi t e blac k sig nal.

2. Connect the high voltage meter between CRT anode and GND.

3. Check that the High Voltage DC 31.0kV ±1.0kV.

1. Connect resistor 6.8kΩ(1/6W, ±5%) betw een

2. 2 pin & 3 pin of the connector S1.

3. Confirm that the X-RAY protector functions operated.

1. Receive th e black & whit e sig n al.

2. Preset from 0 to 1 for D19＜DEF RST＞, to adjust D15:

H.FREQ. and memori z e data with MUT ING key.

3. After adj ustment, to preset fr om 1 to 0 for D1 9: DEF

RST an d Press the MUTING key to memorize data.

No. 51914

V-48WP30

FOCUS & BEAM SPOT ADJUSTMENT

Item

FOCUS & BEAM SPOT adjustment

LENS FOCUS

SCREW

PROJECTION UNIT & LENS ASS’Y

( CRT adjustment location )

Measuring

instrument

Signal generator

Similar adhesive (Securing adhesive)

DEFLECTION

YOKE

CENTERING

4 POLE

MAGNET

CRT FOCUS adjustment point

Test point Adjustment part Description

1. Receive a cross-hatch signal.

2. Press the ASPECT and select the FULL mode.

3. If the pictur e ti lted, adjus t th e R, G an d B D Y posit ion t o m ark straight horizontal line.

LENS FOCUS

4. Makes a red single color.

: When mak ing a sing le col or, It squ eezes SC REEN VR in

NOTE

each one, or it does a lid to the lens in of the adjustm ent color and it makes it single color.

5. By turning the LENS FOCUS screw (in LENS ass’y), for optimum focus at the screen center. Check for absence of difference in the peripheral focus. If the peripheral focus is poor, slig htly shif t the cent er focus t o obtain overall b alanced focus.

6. In the sam e mann er, p roduc e gr een and b lue si ngl e c olor and adjust their respective focus.

7. After adj us tm en t , it fixes a scr ew.

: There is not a differenc e in th e focus i n the top and th e

NOTE

bottom, on either side, in the diagonal. When the dif ference of the f ocus is bi g, it r em oves a main lens, and it puts a was her b etwe en the m ain lens and t h e coupl er and it ad jus t s it.

BEAM SPOT

8. Receive a d ot p at t ern signal.

9. Makes a red single color.

: When mak ing a sing le col or, It squ eezes SC REEN VR in

NOTE

each on e, or it does a lid to the lens in of the adjust ment color and it makes it single c olor.

10. Turn the R FOCUS VR to set the dot diameter to about 30mm.

11. T urn th e 4 pole mag net of t he proj ecti on unit CRT n eck and t o where the dots at the screen center are nearly circular.

12. Return the R FOCUS VR to its original position (just focus).

13. Turn the 2 pole magnet of the CRT neck to minimize expansion of the dots.

14. Receive a crosshatch signal.

15. Adjust the overall screen focus.

16. In the same mann er , adj us t f or th e gre en and blue single color. focus.

17. Secure the 4 and 2 pol e m agnets with similar adh esi v e.

CRT FOCUS

18. Receive a crosshatch signal.

19. Makes a red single color.

: When mak ing a sing le col or, It squ eezes SC REEN VR in

NOTE

each one, or it does a lid to the lens in of the adjustm ent color and it makes it single color.

20. Adjust the R FOCUS VR for optimum focus at the position indicated in the figure.

21. In the same m anner, adj us t for the gre en and bl u e si n gl e color focus.

22. After adjustment, return the SCREEN VRs to their original positions.

NOTE

When moving screen VR, always return to original.

MAGNET

2 POLE

MAGNET

G Def. Yoke (DY) R Def. Yoke (DY) B Def. Yoke (DY) [Projection unit ]

R LENS FOCUS screw

G LENS FOCUS screw

B LENS FOCUS screw

[Projection unit (LENS ASS’Y)]

R SCREEN VR G SCREEN VR B SCREEN VR [FOCUS PACK]

4 pole magnet 2 pole magnet [Projection unit

(CRT neck)]

R FOCUS VR G FOCUS VR B FOCUS VR [FOCUS PACK]

No. 51914

CONVERGENCE & DEFLECTION ADJUSTMENT

(

)

The 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.

At first the adjust ment i n FULL mode sh ould b e done, t hen th e data for the other ASPECT mod e is corre cted in t he res pectiv e

value at the same time.

FLOWCHART OF ADJUSTMENT

V-48WP30

All adjustments of the DEF circuit for this model should be carried out under the status without convergence operation. To enter th e st atus w ith ou t c on ver g ence operati on t ur n the power on whil e pressing th e s ervice switch As a result, you can get the screen as shown in Fig.1. Adjust the DEF circuit in order of the steps indicated by the downward arrows.

Note: When every adjustment of the DEF circuit has completed, start the adjustment of convergence.

CAUTION

on the CONVERGENCE PWB.

S801

PREP ARATION

DEFLECTION

Without convergence operation

SCREEN TILT

RASTER CENTERING & H.POSITION / SIZE

coarse

H.SIZE

SIDE PIN

TRAPEZIUM

CONVERGENCE

.PISITION / SIZE / LINEARITY

H.POSITION

Fig.1

No. 51914

CONVERGENCE PHASE

OVERALL CONVERGENCE

V-48WP30

Item

SCREEN TILT adjustment

CONVERGENCE PWB

SERVICE SW (S801)

[CONVERGENCE PWB]

Measuring

instrument

Signal generator

Test point Adjustment part Description

SERVICE SW (S801)

[CONVERGENCE PWB]

G DEF. YOKE R DEF. YOKE B DEF. YOKE [PROJECTION UNIT]

Confirm correct FOCUS adjustment.

1. It pushes a power switch while pushing SERVICE SW the CONVERGENCE PWB then it makes picture without conver g ence operati on.

2. Receive a cross-hatch signal.

3. Makes a gr een sin gl e c ol or.

: W hen making a s ingle col or, It squ eezes SCR EEN

NOTE

VR in each one, or it does a lid to the lens in the adjustment color and it makes it single color.

4. Temporarily sec ure the G deflecti on yoke to the top of the neck and adjus t the ti lt of the defl ection yoke s o th at th e horiz ontal line at t he center becomes flat. Aft er adjustment, fasten the temporal screw.

5. Adjust the tilt of the R and B deflection yokes in the same manner as for green.

: Make sur e that the adjustment of CRT FOCUS is

NOTE

optimi z ed at the center and at th e f rin ge of the center in turn. If the pr oper ad justm ent has n ot be en don e, adjust FO CU S VR again.

S801

RASTER CENTERING & H.POSITION / SIZE (coarse) adjustment

Signal generator

Remote control unit

SERVICE SW (S801) [CONVERGENCE PWB]

G CENTERING magnet R CENTERING magnet B CENTERING magnet [D EF. YOKE]

D03 : H-SIZE D14 : H-CENTER

1. It pushes a pow er switch whi le pushi ng SERVIC E SW

the CONVERGENCE PWB then it makes picture without conver g ence operati on.

2. Receive a circle & cross-hatch signal.

3. Makes a gr een sin gle color.

: When mak i ng a si ngle col or, it s queezes SCREEN V R

NOTE

in each one, or it does a lid to the lens in the

adjustment color and it makes it single color.

4. Select 1.PICTURE/SOUND from SERVICE MENU.

5. Select D03＜H-SIZE＞and shorten the level until and

perpendicular amplitude of vibration with until the blanking in Left and Right and on either side can be seen.

6. Select D14＜H-CENTER＞and adj ust H-CENT ER to m ake the

screen center and signal center.

7. Select D 03＜H-SIZE＞and adjust H-SIZE to make screen

picture ap prox. 92% of H-S I ZE .

8. Press the MUTING key on the remote control unit and

memori z ed all data.

9. Adjust the G CENTERING magnet to make horizontal and

vertical line center as mechanical center of screen.

10. Red and blue col or , t oo, ar e r efl ect ed by it.

11. Using R CENTERING magnet and B CENTERING magnet,

adjusts for the line of the red and the blue to become the position of the left figure.

S801

L1=30mm L2=30mm

No. 51914

DEFLECTION CIRCUIT ADJUSTMENT

V-48WP30

Item

V. POSITION / SIZE / LINEARITY adjustment

H. POSITION adjustment

Measuring instrument

Signal generator

Remote control unit

Test point Adjustment part Descri ption

D01 : V. SIZE D05 : V. LINEARITY D06 : V. CENTER

SERVICE SW (S801)

[CONVERGENCE PWB]

D14 : H-CENTER

1. It pushes a power switch while pushing SERVICE SW the CONVERGENCE PWB then it makes picture without conver g ence operati on.

2. Set the FULL mode.

3. Receive a c irc le pattern sig nal.

4. Select 1.PICTURE/SOUND from the SERVICE MENU.

5. Select D01＜V SIZE ＞, D05＜V LINEARIT Y＞, D06＜V CENTER＞ with the FUNCTION (▲/▼) key.

6. Adjust D06, D0 2 to mak e to make

C = 45mm

7. Press the MUTING key and memorize the set value.

: To memorize every time after finish adjustment on

NOTE

each mod e. D o n ot adjus t D 04＜V. S-CORRECTION

If it is diff er ent V positi on after adjus t V l in earity, t o

＞

adjust V position.

8. Select D14＜H-CENTER＞ with FUNCTION (▲/▼) key.

9. Adjust D14 with FUNCTION ( / ) key and make

as shown figure.

10. Press the MUTING key and memorize the set value.

(precis ion ± 2mm), and adjust

A = B

D = E

S801

H. SIZE adjustment

D03 : H-SIZE

Screen size

(92%)

Pictu re size

100%

No. 51914

11. Receive a cross-hatch signal.

12. Select D03＜H-SIZE＞ with the FUNCTION (▲/▼) key.

13. A djus t D03 an d m ake sur e t hat th e vertic al s cr een siz e of th e picture size is 92%.

14. Press the MUTING key and memorize the set value.

V-48WP30

Item

SIDE PIN adjustment

TRAPEZIUM adjustment

Measuring instrument

Test point Adjustment part De s cription

D02: EW PARABOLA D08: EW CORNER

LOWER D09: EW CORNER

UPPER

Straight

D07: TRAPEZIUM

11. S elect D02<EW PARABOLA>, D08<EW CORNER LOW ER>, D09＜EW CORNER UPPER＞ with FUNCTION (▲/▼) key respectively.

16. Adjust D02, D08, D09 with FUNCTION ( / ) key and make th e vertical lines at the left and right ed g es of th e sc reen straight.

17. Press the MUTING key and memorize the set value.

18. Select D07＜TRAPEZIUM＞ with the FUNCTION (▲/▼) key.

19. Adjust D07 with ( / ) key and bring the vertic al lines at the right and left edges of the screen parallel.

20. Press the MUTING key and memorize the set value.

Parallel

No. 51914

CONVERG ENCE A D JUST MENT

V-48WP30

Item

CONVERGENCE PHASE

Measuring instrument

Signal generator

Test point Adjustment part Descri ption

adjustment

Remote control unit

Dynamic adjustment mode Phase adjustment mode

Fig. 1

Dynamic adjustment mode

Phase adjustment mode

Fig. 3 Fig. 4

REMOTE CONTROL KEY POSITION

SPLIT key

PHASE/DYNAMIC

SERVICE SW (S801) [CONVERGENCE PWB]

Fig. 2

1. Press the S ER VICE SW

on the CONVERGEN CE PWB

S801

to enter th e dyn am ic ad jus t m ent m od e.

2. Press the 100+ key on t he remote c ontrol u nit to s elect th e green lin e.

3. Using the FUNCTI ON (▲) (CH+) key, intentionally expand the blinkin g h orizontal gr een line as shown in th e

Fig. 1

4. Press the SPLIT key on the remote contr ol unit to enter the phase ad jus t m ent m ode.

5. Using the FUNCTION ( / ) key, adjust the screen so that the point “A” is loc ated b etween th e cr oss-poi nt of th e dotted l ine and the vertical line on t h e left si d e as sh ow n in the

Fig. 2

6. Press the SPLIT key again to return to the dynamic adjustment mode.

7. Press the 100+ key on t he remote c ontrol u nit to s elect th e green lin e.

8. R eturn the p oint “A”, which was intentionally expanded, to its original position.

9. Using the FUNCTION ( ) key, intentionally expand the vertical line as shown in the

Fig. 3

10. Press the SPLIT k ey t o ent er t h e ph as e adjustm ent m od e.

11. Using the FUNCTION (▲/▼) key, adjust the screen so that the peak of th e point “B” meets with the adjacent d otted line as shown in the

Fig. 4

12. Press the SPLIT key again to return to the dynamic adjustment mode.

13. Press the 100+ key to select the vertical green line. Then, using the FUNCTION ( ) key, return the p oint “B”, which was intentionally expanded, to its original position.

14. Press the SPLIT key again to enter the phase adjustment mode.

15. U s ing th e 2/5/4/6 key, adj us t the scr een s o th at th e cr oss -p oin t of the dotted line is positioned at the scr een center on the screen. (

Fig. 5

)

16. Press the MUTING key and memorize the set value.

Number key

Screen center adjustment

100+ key

Select green line

Screen center

MUTING key

Store

FUNCTION ke

Adjusting the line

Fig. 5

No. 51914

V-48WP30

Item

OVERALL CONVERGENCE adjustment

Horizontal flashing line

REMOTE CONTROL KEY POSITION

Measuring instrument

Signal generator

Remote control unit

Test point Adjustment part Description

SERVICE SW (S801) [CONVERGENCE PWB]

1. Receive a NTSC sign al.

2. Press the SERVICE SW

S801

3. Appear the flashing cross-hatch pattern.

4. Press the 10 0+ key on t he remot e c ontr ol unit to s elec t green color.

5. Press MENU key to let green cross-hatch pattern to appear on screen.

6. Us ing the 2(u p) / 4(left) / 5(down) / 6(right ) of remot e contr ol key, move the flashing line.

7. Using the FUNCT ION (▲/▼),( / ) key, adjust the position on the scr een as sh ow n in Fi g.1.

8. Sometime pr ess IND EX key to do int erpol ation pr ocess. Aft er finishing the adjustment press SELECT key twice to memorize.

9. Press 0 key on the remote control unit to select red color.

10. Repeat steps 5～8.

11. Press RETURN+ key on the remote control unit to s elect blue color.

12. Repeat steps 5～8.

13. When the adjus t m ent h as b een c ompl eted, press th e MUTING

Vertical flashing line

key and st or e th e dat a on the memor y.

14. Press 0 keys on the remote control unit five times and it

Fig.1

chang es a screen to the 7×5 adjus tm en t point mode.

15. Repeat steps 4～13.

16. Pr ess RETURN+ keys on the remote control unit five times and it changes a screen to the 13×7 adjust m ent p oint mode.

17. Repeat steps 4～13.

18. Press the SERVICE SW

S801

on the CONVERGENCE PWB.

again.

100+ key

Select green color

0 key

Select red color or 7×5 adjustment point mode

MUTING key

Store

MENU key

Cross hatch

color change

INDEX key

Interpolation process

SELECT key

ROM write

Number 2 / 4 / 5 / 6 key

Movement of the flashing line

RETURN+ key

Select blue color or 13×7 adjustment point mode

FUNCTION

/ / key

▲/▼

Adjusting the line

No. 51914

VIDEO ADJUSTMENT

V-48WP30

Item

A-D C O N V E R TER OFFSET adjustment

Measuring Instrument

Signal generator

Remote control unit

GBK RGK

TP-E

CRT SOCKET PWB

Test point Adjustment Item Description

KG [G CRT SOCKET PWB]

KB [B CRT SOCKET PWB]

KR [R CRT

SOCKET PWB]

ADM013:

ADM012:

ADM014:

G OFFSET

R OFFSET

B OFFSET

Select the STANDARD mode f or the VIDEO STATUS.

1. Receive a whole black (0%) signal.

2. Select REGULAR mode of ASPECT mode.

3. Select that COLOR TEMP in set at the LOW mode.

4. Connect the oscill oscop e to KG (G c athode) on th e G CRT SOCKET PWB.

5. Select 8.PP from the SERVICE MENU.

6. Select ADM013＜G OFFSET＞.

7. Adj ust ADM01 3 as 0% sig n al an d out s i d e fr om ar e s et

to same values.

8. Conn ect the oscillosc ope to KB (B cath ode) on the B CRT SOCKET PWB

9. Select ADM014＜B OFFSET＞.

10. Adjust ADM014＜B OFFSET＞ as 0% signal and outside from are set to same valu es.

KG / KB / KR CRT cathode

11. C onnect the osc illosc ope to KR (R cathod e) on th e R CRT SOCKET PWB

12. Select ADM012＜R OFFSET＞.

13. Adjust ADM012＜R OFFSET＞ as 0% signal and outside from are set to same valu es.

14. Press the MUTING key to memorize.

15. Af ter adjustmen t, data of ADM 012, ADM0 13, ADM014 are used to adj us tment of oth er sig n al.

RGB CUTOFF adjustment

Signal generator

Oscilloscope

GBK RGK

TP-E

CRT SOCKET PWB

TP-R [R CRT SOCKET PWB]

TP-G [G CRT SOCKET PWB]

TP-B [B CRT SOCKET PWB]

S14: R CUTOFF S16: G CUTOFF S18: B CUTO FF

TP-R TP-G TP-B

Select the STANDARD mode f or the VIDEO STATUS.

1. Receive half color bar signal (include -3%).

2. Select that COLOR TEMP in set at the LOW mode.

3. Connect the oscilloscope to TP-G.

4. Adjust S16＜G CUTOFF＞ to mach -3% DC level to 180V.

5. Press the MUTING key to memorize.

: Adjusti ng S16, chang e t he only up. If DC l evel

NOTE

is low at the initial value of CUTOFF, adjust S03 (brightness).

6. Input 1080i black level pattern signal and input the value adjusted at NTSC to S16＜G CUTOFF＞.

7. Press the MUTING key to memorize.

8. Inp ut 480i black l ev el p attern sig n al and input the value adjust ed at NT SC t o S1 6＜G CUTOFF＞.

9. Press the MUTING key to memorize.

10. In case of TP-R, TP-B, repeat step 4.～6 above. If the value of S14 or S18 is max or min, change S20＜R CUTOFF SW＞, S21＜B CUTOFF SW＞ and then adjust S14, S18.

11. Adjus t each R / G / B screen VR on the FO C US P A CK , and glimmer +3% point of each R / G / B on the screen.

No. 51914

V-48WP30

Item

WHITE BALANCE (Low Light) adjustment

Setting item

R. CUTOFF setting value

Measuring

Instrument

Signal generator

Remote control unit

LOW-BAL

LOW-BALLOW-BAL (***) (***) (***)

G. cutoff setting value

Press 0 key then appear

Test point Adjustment Item De s cription

S14 : R CUTOFF S16 : G CUTOFF S18 : B CUTOFF

S20 : R CUTOFF

S21 : B CUTOFF

B. cutoff setting value

Select the STANDARD mode ( all “000”) for the VIDEO

STATUS.

1. Receive the NTSC blac k and w hite p att ern sign al (c olor off).

2. Select that COLOR TEMP is set at the LOW mode.

3. Set the initi al setti ng val ues of t he white b alanc e (S14, S16, S18, S20, & S 21 of Low Light) on the SERVICE MENU.

4. Select the 3.LOW LIGHT mode from the SERVICE MENU.

5. Press the 0 key, then setting values appear.

6. In crease the bright level to confirm low-light with FUNCTION key ( ).

7. Adjust low-light white balance with 4/7(R CUTOFF), 6/9 (B CUTOFF) key of numbe r key.

8. Press the MUTING key for memorize.

9. Receive th e 1080i blac k an d white patter n si gn al.

10. Repeat steps 5.～8. abov e.

11. Receive the 48 0i bl ac k and w hi t e sig nal.

12. Repeat steps 5.～8. abov e.

REMOTE CONTROL UNIT

EXIT

1 2 3

R CUTOFF B CUTOFF

G CUTOFF

4 5 6

G CUTOFF

B CUTOFFR CUTOFF

7 8 9

OSD ON/OFF

Setting item

S14 211 211 215 S16 050 050 050 S18 052 052 059 S20 000 000 000 S21 001 001 001

NTSC 480i 1080i

Setting value

No. 51914

V-48WP30

Item

WHITE BALANCE (High Light) adjustment

Setting

ITEM

G DRIVE

setting

value

Measuring Instrument

Signal generator

Remote control unit

HW-BAL

*** ***

Fig.1

Press 0 key then appear.

Test point Adjustment Item Description

S10 : R DRIVE S12 : B DRIVE

R DRIVE setting value

Select the STANDARD mode (all "000") on the VIDEO

STATUS.

1. Receive th e NT S C black and whit e si gnal (color of f ) .

2. Select that COLOR TEMP is set at the LOW mode.

3. Select the 4.HIGH-LIGHT, and set the initial setting values of the WH IT E BALANCE (S10 & S12 of HIGH LIGHT) on th e SER VICE MENU.

4. Press the 0 key, then setting values appear.

5. Make sure that the WHITE BALANCE tracking from the LOW-LIGHT through the HIGH-LIGHT has been properly done. (When the black and white signal (color off) is received, the natural white should be visible.)

6. Input the 1080i which an d bl ac k signal.

7. Repeat steps 3.～5. abov e.

8. Input the 480i black an d white signal .

9. Repeat steps 3.～5. abov e.

10. Press the MUTING key and memorize the set values.

INITIAL SETTING VALUE

Item

S10 080 080 078 S12 074 074 070

Setting value (STANDARD LOW)

NTSC 480i 1080i

REMOTE CONTRO L UNIT

EXIT

1 2 3

R DRIVE B DRIVE

4 5 6

B DRIVER DRIVE

7 8 9

OSD ON / OFF

Fig.2

No. 51914

V-48WP30

Item

SPLIT WHITE BALANCE (High Light) adjustment

Measuring

Instrument

Signal generator

Remote control unit

TWIN PICTURE

MAIN

picture

(LEFT) (RIGHT)

Fig.1

Test point Adjustment Item Description

ADS012 :

R OFFSET

ADS014 :

B OFFSET

1. Select SPLIT mode.

2. Receive the NTS C bl ac k & wh it e sig nal both the picture.

3. At firs t to adj ust AD S0 12

B OFFSET＞, next to adj ust th e whit e level on right

＜

picture s am e as l eft screen (Fig. 1).

4. Press the MUTING key and memorize the set values.

SUB

picture

R OFFSET＞ and ADS014

＜

Item

SUB BR I GHT adjustment

S03:SUB BRIG HT

Signal

Item

Setting

value

STANDARD THEATER STANDARD THEATER STANDARD THEATER

Measuring

Instrument

Remote

Test point Adjustment Item Description

S03 : SUB BRIGHT

control unit

INITIAL SETTING VALUE

NTSC 480i 1080i

134 133 134 133 132 134

Table1

1. Receive the NTS C bl ac k & wh it e sig nal.

2. Select 1.PICTURE/SOUND from SERVICE MENU.

3. Select S03＜SUB BRIGHT＞ with FUNCTION (

▲/▼

key.

4. Set the initial setting value with the FUNCTION ( / ) key. (Table1)

5. Adjust S03, not to flash part of black on the screen.

6. Press the MUTING key and memorize the set values.

7. Select THEATER / LOW white balance, and then repeat steps 3～7 above.

8. Rec eive 108 0i blac k an d whi te an d s elect ST AND ARD / LOW, and then repeat steps 3～7 above.

9. Receive 1080i black and white signal and select THEAT ER / LOW mode, and then repeat steps 3～7 above.

10. Input 480i black and white signal, and select STAND ARD / LOW mode, and t hen r ep eat s teps 3～7 above.

11. And then select THEATER / LOW mode, repeat steps 3

7 above.

～

)

No. 51914

V-48WP30

Item

SUB CONTRAST adjustment

S04:SUB CONTRAST

Signal

Item

Setting

value

STANDARD THEATER STANDARD THEATER STANDARD THEATER

078 045 079 045 082 047

Measuring Instrument

Remote control unit

INITIAL SETTING VALUE

NTSC 480i 1080i

Table2

Test point Adjustment Item Description

S04 : SUB CONT.

1. Receive the NTS C bl ac k & wh it e sig nal.

2. Enter the SERVICE MENU of 1.PICTURE/SOUND Item.

3. Select S04＜SUB CONT＞ with FUNCTION ( key.

4. Set the Initial setting value with FUNCTION ( / ) key. (Table2)

5. If the contrast is not the best with the initial setting value, mak e fin e adjus tme nt of th e S04＜SUB CONT.＞ until you get the optimum contrast.

6. Press the MUTING key and memorize the set values.

7. Select THEATER / LOW.

8. Receive the 1080i black and white signal and then repeat steps 3～7 above.

9. Inp ut the 480p black an d white signal and then rep eat steps 3～7 above.

▲/▼

)

Item

SPLIT SUB BR I GHT / SUB CONTRAST

adjustment

Measuring Instrument

Remote control unit

Test point Adjustment Item Description

ADS013 :

SUB BR I GHT

VCS008 :

SUB CONTRAST

1. Select SPLIT mode and then receive the NTSC black & white sign al to both pictures.

2. Enter the SERVICE MENU of 1.PICTURE/SOUND Item.

3. Adjust ADS013 same as left picture.

4. Adjust VCS008 is same as left picture.

5. Press the MUTING key and memorize the set values.

SUB BRIGHT＞ to right picture is

＜

SUB CONTRAST

＜

to right p icture

＞

No. 51914

V-48WP30

Item

SUB COLOR / SUB TINT / B-Y GAIN adjustment

Measuring

Instrument

Signal generator

Oscilloscope

Remote control unit

Test point Adjustment Item Description

TP-R TP-B TP-E(

)

####

S01 : SUB COLOR S02 : SUB TINT S07 : B-Y GAIN

1. Input the 480i color bar from computer terminal.

2. Select STANDARD and FULL mode.

3. Enter the SERVICE mode of 1.PICTURE/SOUND.

4. Connect the Oscilloscope to TP-R.

5. Adjust S01＜SUB COLOR＞ and S02＜SUB TINT to be f ollowin g setti ng val ue A[V]. (Refer to the bellow table)

6. Select THEATER and then adjust S01＜SUB COLOR and S02＜SUB TINT＞ to be following setting value

[V] same as above. (Refer to the bellow table)

7. Connect the Oscilloscope to TP-B.

8. S elect STANDARD and then adjust S07＜B-Y GAIN to be settin g value C[V]. (Refer to the bellow table)

9. S elec t TH EATER and then adj us t S 07＜B-Y GAIN＞ to be setting value D[V]. (Refer to the bellow table)

Fig.1

(-)

(+)

(W-R)(W-Y)Y

10. Receive 108 0i color b ar and then r epeat st eps 3.～8. above.

11. Receive 480p c olor bar and then repeat steps 3.～8. above.

12. Confirm that low-light is not different after adjusting color, T int and B-Y G ain. If i t is gr een or m agent a, to adjust l ow- li ght again. If adjus t again, to s et of f s et value again.

13. Press the MUTING key and memorize the set values.

＞

Signal

NTSC

1080i

480i

480p

Setting

item

(-)

(W-B)

(+)

Fig.2

Setting value

A[V]

Standard Theater Standard Theater

S01(W-R) S02(W-Y) S01(W-R) S02(W-Y) S07(W-B) S07(W-B)

+28 +16 +19 +7 +7 +8

+7 +6 +5 +7 +7 -24 +22 +13 +7 +1 +1 -24 +19 +16 +11 +2 +2 -30

Setting value

B[V]

Setting

value

C[V]

Setting

value

D[V]

Table

1. Input th e NTS C COLOR / T INT d ata is 48 0i COLO R / TINT data off set value (St and ar d and T h eat er ).

2. Receive the NT S C CO LO R B A R from anten n a terminal and then select STANDARD mode.

3. Connect the Oscilloscope to TP-R.

4. Enter 8.PP from service menu.

5. Adjust VCM04＜SUB COLOR＞ and VCM01＜SUB TINT to be f ollowin g setti ng val ue A[V]. (Refer to the bellow table)

6. Select THEATER and then adjust S01＜SUB

COLOR

＞

and S02＜SUB TINT＞ to be following setting value

[V] same as above. (Refer to the bellow table)

7. Connect the Oscilloscope to TP-B.

8. S elect stand ard and then adj ust S07＜B-Y GAIN＞ to be setting value C[V]. (Refer to the bellow table)

9. Select theater and then adjust S07＜B-Y GAIN＞ to be setting value D[V]. (Refer to the bellow table)

10. Confirm that low-light is not different after adjusting COLOR, TI NT and B-Y GAIN. If it is gr een or mag en ta, to adjust low-light again. If adjust again, to set offset value ag ain .

11. Press the MUTING key and memorize the set values.

＞

No. 51914

V-48WP30

(-)

(+)

Item

DIGITAL INPUT (HDCP) SUB COLOR / SUB TINT/ B-Y GAIN adjustment

Item

SPLIT SUB COLOR / SUB TINT ajustment

Measuring Instrument

Signal generator

Remote control unit

Measuring Instrument

Signal generator

Oscilloscope Remote

Control unit

MAIN

picture

Test point Adjustment Item Description

TP-R TP-B TP-E(

S01:SUB COLOR S02:SUB TINT

)

####

COLOR, TI NT,B-Y GAIN adj us t ment at 1080i an d 480 p

should b e finished.

1. Input HDCP (digital) 1080i signal.

2. Select STANDARD on VIDEO STATUS.

3. Enter to SERVICE MENU.

4. Input t he s am e val ue adjus ted at 10 80i ST AN DARD t o the setting value S01, S02.

5. Select THEATER on VIDEO STATUS.

6. Input the s ame value adjust ed at 1080i T HEATER to setting v al u e S0 1, S02.

7. Inp ut H D CP 48 0p 7 20×480 dots signal.

8. Select STANDARD on VIDEO STATUS.

9. Input th e same val ue adjust ed at 480p STAN DARD t o the setting value S01, S02.

10. Select THEATER on VIDEO STATUS.

11. Input the same value adjusted at 480p THEATER to the setting v al u e S0 1, S02.

12. Press the MUTING key and memorize the set values.

Test point Adjustment Item Description

TP-R VCS004: SUB

DECODER COLOR VCS001: SUB

DECODER TINT

1. Select SPLIT mode.

2. Receive COLOR BAR signal to sub (right) screen and PEDESTAL signal to main (left) screen (Fig.1).

3. Enter the SERVICE MENU of 8.PP Item.

4. Connect the oscilloscope to TP-R.

5. Adjust VCS004＜SUB DECODER COLOR＞, VCS001

SUB DECODER TINT＞ t o ad jus tment poin t

＜

SUB

picture

(Fig.2).

6. Press the MUTING key and memorize the set values.

(A)

[V]

Fig.1

setting value

Adjustment Point (A[V] )

VCS004(W-R) VCS001C(W-Y)

+37V +7V

(Y)(W) (R)

(A)

(W-R)(W-Y)

Fig.2

No. 51914

V-48WP30

MTS adjus tment

Item

MTS INPUT LEVEL check

Measuring

Instrument

Remote control unit

Test point Adjustment Item Descr iption

A02 : IN LEVEL

1. Select 1.PICTURE / SOUND from SERVICE MENU.

2. Select the A02＜IN LEVEL＞ with FUNCTION ( key.

3. Verify that the A02＜IN LEVEL＞ is set at its initial setting value.

▲/▼

)

MTS STEREO VCO adjustment

MTS SAP VCO adjustment

TV audio multiplex signal generator

Frequency counter

Remote control unit

TV audio multiplex signal generator

Frequency counter

Remote control unit

AUDIO OUT R output

S2 Connector 3-pin:GND 4-pin:SOA [RECEIVER PWB]

AUDIO OUT R output

A03 : FH MONITOR A04 :STEREO VCO

A09 : 5FH MON. A10 : SAP VCO

1. Receive the RF signal (non-modulated sound signal) from the antenna terminal.

2. Select the A03＜FH MONITOR＞ with FUNCTION

(

) key, and change the setting value from 0 to 1.

▲/▼

3. Connect the frequency counter to R outp ut pin of the AUDIO OUT.

4. Select the A04＜STEREO VCO＞ with FUNCTION (

) key.

▲/▼

5. Set th e initial s etting value of the No.4 STER EO VCO with the FUNCTION ( / ) key.

6. Adjust the A04＜STEREO VCO＞ so that th e frequency counter will di sp lay 15.73kHz±0.1kHz.

The frequency counter indication should be stabl e.

7. Select the A03＜FH MONITOR＞ with FUNCTION (

) key, and reset the setting value from 1 to 0.

▼

▲

1. Receive the RF signal (non-modulated sound signal) from the antenna terminal.

2. Connect between pin ④ of S2 connector and GND ( Pin ③ of S2 connector) through 1MΩ resistor.

3. Select the A09＜5FH MON＞ with FUNCTION (

▲/▼

key, and reset the setti ng value from 0 to 1.

4. Connect the frequency counter to R outp ut pin of the AUDIO OUT.

5. Select the A10＜SAP VCO＞ with FUNCTION (▲/▼) key.

6. S et th e initial setting value of A1 0＜SAP VCO＞ with of FUNCTION ( / ) key.

7. Adjust the A10＜SAP VCO＞ so that the frequency counter will display 78.67kHz±0.5kHz.

The frequency counter indication should be stabl e.

8. Select the A09＜5FH MON＞ with FUNCTION (

▲/▼

key, and reset the setti ng value from 1 to 0.

)

MTS FILTER check

TV audio multiplex signal generator

Oscilloscope

Remote control unit

S2 Connector

2-pin:R [RECEIVER

PWB]

A05 : PILOT A06 : FILTER

No. 51914

1. Receive the RF signal (MTS pilot signal) from the antenna terminal.

2. Select the A05＜PILOT＞ with FUNCTION (

▲/▼

) key,

and reset the setting value from 1 to 0.

3. Connect the oscilloscope to ② pin of S2 connector.

4. Select the A06＜FILTER＞ with FUNCTION (

▲/▼

) key.

5. Adjust the A06: FILTER so that the waveform will because minimum .

6. Select the A05＜PILOT＞ with FUNCTION (

▲/▼

) key,

and reset the setting value from 1 to 0.

V-48WP30

Item

MTS SEPARATION adjustment

1 cy cl e

Measuring

Instrument

TV audio multiplex signal generator

Oscilloscope

Remote control unit

L-Channel signal wave form

Test point Adjustment Item Descr iption

AUDIO OUT L output

R output

R-Channel crosstalk po rt ion

Minimum

A07 : LOW SEP. A08 : HI SEP.

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

2. Connect an oscilloscope to L OUTPUT pin of the AUDIO OUT, and display one cycle portion of the 300Hz signal.

3. Change the connection of the oscilloscope to R OUTPUT pin of the AUDIO OUT, and enlarge the voltag e axis .

4. Select the A07＜LOW SEP.＞ with FUNCTION (

)key.

▼

5. S et the initi al setting value of the A07＜LOW SEP. with the FUNCTION ( / ) key.

6. Adjust the A07＜LOW SEP.＞ so that the stroke element of the 300Hz signal will become minimum.

7. Change the sign al t o 3kHz, and s i milarly adj us t t h e A 0 8

HI SEP.＞.

＜

▲

＞

No. 51914

V-48WP30

HOW TO CHECK THE HIGH VOLTAGE HOLD DOWN CIRCUIT

1. HIG H VOLTAGE HOLD DOWN CIRCUIT

After rep air i ng the hi gh voltage h old d ow n circuit. This circuit shall be checked to operate correctly.

2. CHECKING OF THE HIGH VOLTAGE HOLD DOWN CIRCUIT

(1) Turn the power sw ON. (2) As shown in figure bellow, set the resistor (between S2 connector 1 & 5). (3) Make sure that the screen picture disappears (no raster). (4) Tempor ar il y un plug the pow er c or d. (5) Remove the resistor (between S2 connector 1 & 5). (6) Again plug the power cord, make sure that normal pictures is displayed on the screen.

RESISTOR

6.8K

Ω±

0.5% 1/4W

CN003 2

X-RAY

T502

FBT

12345

S1 SERVICE CONNENTOR

TP-E

R561

C562R565

R563

C811R562

TP-91

R811 D812

Y503

S1 CONNENTOR

12345

TP-91

140V

TP-E

( )

X-RAY2

X-RAY1

No. 51914

TROUBLESHOOTING

SELF CHECK FUNCTIONS

This model has self-check functions that inform of the failure of the TV by detecting abnormality. Operational state is always monitored and the identified is memorized on the record.

How to enter the SELF-CHECK mode

1. During th e st and-by mod e, tur n the p ow er on wh il e pr es s in g the volume (

How to exit from the SELF-CHECK mode

1. By using the r emote control unit, turn the power off. At this time, the failure record is cleared.

2. Take off the AC plug from the wall outlet. At this time, the failure record is not cleared.

SELF CHECK DISPLAY

The self-check results are shown on the following display. Method of in dication wh en th e r as t er is not displayed (Fi g.1).

) button on t h e TV s et.

▼

V-48WP30

Each failure is shown by turning POWER LED on and off at specified intervals.

Item X-ray protection B1 Over-current

protection Low B short protectio n

Explanation

For X-ray protection, B1 over-current protection and low-B protection, the power of the TV is turned off if NG is detected. Immediately after the power is turned off, POWER LED will be

turning on an d of f .

When the pow er is turned off, you cannot turn the power on again until the AC plug is taken out and put in again.

Becaus e of t he ti ming of Vcc st art- up and s hut- down of th e IC

connect ing to the I and off, th e op er at i on m ay b e interpret ed as an error. In order t o av oid th e m is in terpret ati on, the s elf - c h eck f u nc tions should b e start ed at about 3 secon ds aft er t he pow er is tu rn ed on.

The latest failure is stored on the record at the end.

The failure record for each check item is counted to the number of 9 at the maxi m u m, When more t h an 9 failures ar e s t ored on the record, the counter remains stopped at 9.

for activation of self-check functions

POWER LED ON / OFF interval s

Turning on and of f 0.1- second int ervals

Turning on and of f 1-second int er vals

Turning on and of f 2-second int er vals

C bus durin g which the power is turned on

ITEM

RESULT COUNT

IO LOB SYNC MEM VCD AIO TUN PP

NG2 OK M:OK OK NG2 OK OK NG4

OCP TIM S:OK A VSW BS YC OK OK

SELF-CHECK SCREEN

NG2 OK HD:NG OK OK OK OK OK

No. 51914

V-48WP30

Indication Chec k ite m Details of detect ion Method of detectio n

XRAY X-ray prot ec ti on Operati on of X-ray

protection circuit.

At about 3 sec on ds af t er the p ow er is tur n ed on , the self-check function starts. If NG is detected for 200ms, the power is turned off automatically .

OCP B1 Over-current protection An B1 over-current is

detected.

LOB Low B protection Operation of low B short

protection circuit.

SYNC Pres ence or absence of

synchronized signal

MEM E2PROM memory ACK is returned when I2C

AVSW AV switch Ditto, MM1519 and

VCD Video chroma Ditto, AN5392 Ditto

Presence of synchronized signal.

HD : HD system M : NTSC main S : NTSC sub

traffic is carried out.

CXA2069Q

At about 3 sec on ds af t er the p ow er is tur n ed on , the self-check function starts. If NG is detected for 200ms, the power is turned off automatically .

When entering the self-check mode, “OK” i s shown. While running the mode with picture signal, if the synchronized signal is disappeared, “NG” is shown.

The state is monitored every time when I2C traffic is carried out. Then the state is counted as a failure if ACK is not returned.

Ditto

BS BS tuner Ditto, BS tuner module Dit to

AIO Audio Ditto, BD3869 Ditto

YC 3DY/C Ditto, up d6 40 83 Ditto

TUN RF tune r Ditto, RF tuner Dit to

PP P & P Ditto, AMDP2(TMX57128) Ditto

IP IP Ditto, JCC5054 Ditto

GCR GCR Not used Ditto

TIM Timer The power frequency is

changed as follows : 50Hz→60Hz 60Hz→50Hz

Periodically check the power frequency by counting the AC pulse and m onitor whet h er or not the frequency is chang ed except for the tim e immediatel y after resetting .

No. 51914

JVC SERVICE & ENGINEERING COMPANY OF AMERICA

DIVISION OF JVC AMERICAS CORP.

Head office East Coast

Midwest West Coast Southwest Hawaii Southeast

: 1700 Valley Road, Wayne, New Jersey 07470 (973)315-5000 : 10 New Maple Avenue, Pine Brook, New Jersey 07058 (973)396-1000 : 705 E nterprise St. Aurora, Ill inois 60504 (630)851-7855 : 5665 Cor por ate Avenue, Cypress, Calif or nia 90630 (714)229-8011 : 10700 Ham merly, Suite 105, Houston,T exas 77043 (713)935-9331 : 2969 M apunapuna P lace, Honolulu, Hawaii 96819 (808)833-5828 : 1500 Lak es Par kway, Lawrenceville, Geor gia 30243 (770)339-2582

JVC CANADA INC.

Head office Vancouver

: 21 Finchdene Square Scarborough, Ontario M1X 1A7 (416) 293- 1311 : 13040 Worster Court Richmond B.C. V6V 2B3 (604)270-1311

48WP30-UCM #4

VP 0202 DP20598061

JVC AV-48WP30 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

SPECIFICATIONS

SAFETY PRECAUTIONS

FEATURES

FUNCTIONS

INSTALLATION

TECHNICAL INFORMATION

MAIN PARTS LOCATION

SPECIFIC SERVICE INSTRUCTIONS

SERVICE ADJUSTMENTS

TROUBLESHOOTING