JVC AV-48P777 Service Manual

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Page 1

SERVICE MANUAL

REAR PROJECTION TELEVISION

YA45520068

AV-48P777/H, AV-48P787/H, AV-56P777

POWER

DVD

CATVVCR

INPUT

SLEEP

DISPLAY C.C.

TIMER

THEATER PRO

VIDEO STATUS

ASPECT

TUNE

RETURN+

SUB CH

/TV

ML/MTS SOUND GUIDE

FAVORITE

MUTING

CH +

VOL

–

CH –

BACK

VCR/DVD

VCR CHANNEL

TV/VCR

POWER

PREV NEXT

PLAY FFREW

REC

STOP PAUSE

OPEN/CLOSE

STILL/PAUSE

RM-C1272G

/H, AV-56P787/H

BASIC CHASSIS

SR2

TABLE OF CONTENTS

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

2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-44

No.YA455

2006/8

Page 2

SPECIFICATION

Contents

Items

Dimensions (W × H × D) 120.0cm × 118.9cm × 62.2cm

(47-1/4" × 46-7/8" × 24-1/2")

Mass 76.9kg (170 lds) 83.3kg (184 lds)

TV RF System (Analog / Digital) Analog : CCIR (M)

Digital : ATSC terrestrial / Digital cable

Color System (Analog) NTSC

Sound System (Analog) BTSC system (Multi Channel Sound)

Teletext System (Analog) Closed caption (T1-T4 / CC1-CC4)

Receiving Channels and Frequency (Analog)

TV / CATV Total Channel 191 Channels

Intermediate Frequency (Analog)

Color Sub Carrier (Analog) 3.58MHz

Power Input AC 120V, 60Hz

Power Consumption 240W (Max)

Screen Transparent screen (unitized fresnel lens / double lenticular lens)

Screen Size 48" (122cm) Measured diagonally

Projection Tube 17cm (6.7") tube × 3 ( R/G/B )

High Voltage 31.6kV [+1.0kV / -1.5kV] (at zero beam current)

Speaker 13cm round type × 2

Audio Power Output 7W+7W (Full range)

Antenna Terminal (VHF/UHF, ATSC / DIGITAL CABLE IN)

Video / Audio Input [INPUT-1/2/3/4]

Digital Input Video

Audio Output (FIX)

Digital Audio Optical Output Digital SPDIF × 1 Remote Control Unit RM-C1272G (AA/R6/UM-3 battery × 2)

Design & specifications are subject to change without notice.

VHF Low

VHF High

UHF

CATV 54MHz~864MHz

Video IF

Sound IF

Component Video

[INPUT-1/2]

1125i / 750p

525p / 525i

S-Video

[INPUT-1/3/4]

Video Audio

Audio

02ch~06ch : 54MHz~88MHz 07ch~13ch : 174MHz~216MHz 14ch~69ch : 470MHz~806MHz

Low Band : 02~06 High Band : 07~13 Mid Band : 14~22 Super Band : 23~36 Hyper Band : 37~64 Ultra Band : 65~94, 100~135 Sub Mid Band : 01, 96~99

45.75MHz

41.25MHz (4.5MHz)

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

75Ω unbalanced, coaxial, F-type connector × 1

RCA pin jack × 6 Y : 1V (p-p) (Sync signal: 0.35V(p-p), 3-value sync.), 75 Ω

Pb/Pr : ±0.35V(p-p), 75 Ω Y : 1V (p-p), positive (Negative sync provided), 75 Ω Pb/Pr : 0.7V(p-p), 75 Ω Mini-DIN 4 pin × 3 Y: 1V (p-p), positive (Negative sync provided), 75 Ω C: 0.286V (p-p) (Burst signal), 75 Ω 1V (p-p), positive (Negative sync provided), 75 Ω, RCA pin jack × 4 500mV (rms), high impedance, RCA pin jack × 8

HDMI 2-row 19pin connector × 2

(Digital-input terminal is not compatible with picture signals of personal computer)

Digital: HDMI 2-row 19pin connector × 2 Anarog: 500mV(rms) (-4dBs), high impedance, RCA pin jack × 2

500mV(rms) (-4dBs), low impedance (1kHz when modulated 100%), (RCA pin jack × 2)

AV-48P777 AV-48P787

AV-56P777 AV-56P787

136.8cm × 138.6cm × 66.7cm (53-7/8" × 54-5/8" × 26-3/8")

56" (142cm) Measured diagonally (W:124 cm, H:69.8 cm), 16:9 ratio

1-2 (No.YA455)

Page 3

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 that 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) Use isolation transformer when hot chassis.

The chassis and any sub-chassis contained in some products are connected to one side of the AC power line. An isolation transformer of adequate capacity should be inserted between the product and the AC power supply point while performing any service on some products when the HOT chassis is exposed.

(5) Don't short between the LIVE side ground and ISOLATED

(NEUTRAL) side ground or EARTH side ground when repairing. Some model's power circuit is partly different in the GND. The difference of the GND is shown by the LIVE : ( ) side GND, the ISOLATED(NEUTRAL) : ( ) side GND and EARTH : ( ) side GND. Don't short between the LIVE side GND and ISOLATED (NEUTRAL) side GND or EARTH side GND and never measure with a measuring apparatus (oscilloscope etc.) the LIVE side GND and ISOLATED(NEUTRAL) side GND or EARTH side GND at the same time. If above note will not be kept, a fuse or any parts will be broken.

(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) 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).

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

meter or a high voltage probe with a VTVM. Discharge the picture tube before attempting meter connection, by connecting a clip lead to the ground frame and connecting the other end of the lead through a 10k

(9) 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.

Ω 2W resistor to the anode button.

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

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

ed 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 test equipment not generally found in the service trade.

b) Leakage Current Check

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

• Alternate Check Method

Plug the AC line cord directly into the AC outlet (do not use a line isolation transformer during this check.). Use an AC voltmeter having 1000 ner. Connect a 1500 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.).

(11) High voltage hold down circuit check.

GOOD EARTH GROUND

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

This mark shows a fast operating fuse, the letters indicated below show the rating.

Ω per volt or more sensitivity in the following man-

Ω 10W resistor paralleled by a 0.15µF AC-

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

0.15 F AC-TYPE

PLACE THIS PROBE

1500 10W

A V

ON EACH EXPOSED ME TAL PAR T

POWER CORD REPLACEMENT WARNING.

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

PWB

White line side

WHT

(No.YA455)1-3

Page 4

1.2 INSTALLATION

1.2.1 INSTALLATION SITE

(1) The rear of this set is provided with ventilation openings.

Install the set more than 5 cm from a wall and in a location with good ventilation.

(2) Avoid the following types of locations.

a) Unstable locations (location must be able to with

stand heavy weight). b) Locations subjected to direct sunlight. c) Near stoves or other heating devices. d) Locations subjected to humidity or oily smoke. e) Dusty locations.

f) Locations with strong vibration.

1.2.2 INSTALLATION ADJUSTMENT

When installing, moving or changing the orientation of the set, perform static convergence adjustment according to the following procedure. Adjusting CRT color convergence have MANUAL and RESET. It adjust on the MENU screen.

NOTE :

Please you have TV on for at least 20 minutes before sing this feature. This adjustment will be needed only when the colors of the characters/lines are separated and lack in distinction. If not, please don't perform the adjustment.

MANUAL

(1) Press the [MENU] key, and select the "CONVERGENCE"

in the Picture Adjust menu with [function up/down] key.

(2) Press the [function left/right] key, the CONVERGENCE

menu appears.

(3) Press the [function up/down] key, and select the

"MANUAL".

(4) Press the [function left/right] key, then CONVERGENCE

adjustment screen appear. [Fig.1]

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

(5) Select the location you want to adjust by using the [number

(2/4/5/6/8)] keys on the remote control unit. [Fig.2]

(6) Press the [SLEEP TIMER] key to change the color of the

box to the color of the cross you want to adjust (red or blue).

• You cannot adjust the green cross.

(7) Use the [function up/down] key and the [function left/

right] keys to adjust the position of the cross.

(8) Adjust the three colors crosses until they overlap and

appear as a single white cross.

(9) Press the [OK] key.

(more than 5cm)

Wall

VENTILATION OPENING

NOTE :

• When you adjust the convergence, make sure you start with the center position (position 5), and work your way around radial for best results.

• When you make the adjustment in the center (positions 5), you are making the adjustment for the whale screen. In other positions, you are making the adjustment only in that area.

• You can reset the adjustment if you do not like the results, See below.

(10) Press the [menu] key to end the convergence adjustment

procedure.

RESET

RESET in the CONVERGENCE menu resets all convergence adjustments to the factory default setting.

Fig.1

Fig.2

1-4 (No.YA455)

Page 5

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

2.1 SYSTEM SETTEING

Be sure to carry out the following operation at the end of the procedure.

(1) Set to "0 minutes" using the [SLEEP TIMER] key. (2) While "0 minutes" is displayed, press the [VIDEO

STATUS] key and [DISPLAY] key imultaneously, then enter the SERVICE MODE.

(3) Press the [4] key (4.Diagnostics) in the SERVICE MENU

SCREEN.

(4) Press the [3] key (3.Self check) in the DIAGNOSTICS

MODE screen. (5) The SELF CHECK MODE screen is displayed. (6) Turn off the power by pressing the [POWER] key on the

remote control unit.

Press [4] key

SERVICE

Service Menu

1.Digital Service

2.TV-Micro Service

3.Conver Service

4.Diagnostics

Diagnostic MENU SCREEN

Diagnostic

1.I2C Bus Stop

2.Status Monitor

3.Self Check

4.Version

5.Save Config data to SD card

6.Load Config data

7.Boot from NFS

8.Debug Log

MENU SCREEN

2.2 FEATURES

Built in ATSC (Advanced Television Systems Committee) TUNER

This TV can receive both Digital broadcasting (ATSC) and Analog broadcasting.

SMART CAPTION

Smart caption will appear when you press the MUTING button, only on channels where the broadcast contains CLOSED CAPTION information.

SMART SOUND

Decreases high sound levels, giving a regulated sound level.

DIGITAL COMB FILTER

By the 3D digital comb filter, the refreshed image can be seen.

VIDEO STATUS

Expression of a favorite screen can be chosen by the VIDEO STATUS function.

DIGITAL INPUT

Digital-in will display when any picture signal in Digital-in is displayed.

V-CHIP

Since the V-CHIP is built in, it can choose, view and listen to a healthy program.

MTS STEREO

The voice multiplex function of the MTS system is built in. (MTS = Multi channel Television Sound system)

NATURAL CINEMA

Watching the movie or animation, press the Natural Cinema to adjust the out line of the images to make thin more sharp.

VIDEO INPUT LABEL

This function is used to label video input connections for the onscreen displays.

A.H.S.

Adds a more spacious surround sound. Music gives basic effect and movie for more effect.

Press [3] key

SELF CHECK MODE SCREEN

Self Check 1/2 X-RAY OK OCP OK LOB OK TIM OK PHOTO OK HostLink OK FAN ---

<> Previous/Next Page [BACK]Back [MENU]Exit

2.3 DIFFERENCE LIST

Item AV-48P777/H AV-48P787/H AV-56P777/H AV-56P787/H

BODY COLOR SILVER BLACK SILVER BLACK

(No.YA455)1-5

Page 6

2.4 TECHNICAL INFORMATION

2.4.1 MAIN MICRO COMPUTER (CPU) FUNCTION

Pin name I/O Function Pin

No.

1 P60/SBT2 - Not used 51 ATSC_TX I Serial communication for ATSC tuner

2 P_MU O Not used : Picture muting [Muting: H] 52 ATSC_RX O Serial communication for ATSC tuner

3 M_MUTE O Audio output muting [Muting: H] 53 P85 - Not used

4 A_MUTE O Audio muting [Muting: H] 54 VREF+ I Reference voltage [+3.3V Fixed]

5 ROTATION_L O

6 ROTATION_R O

7 P52/TM14OA - Not used 57 SDA0 I/O I2C bus (data) for EEPROM

8 P53/TM14OB - Not used 58 SCL0 O I2C bus (clock) for EEPROM

9 DEF_RESET O Not used : Reset for deflection 59 P92/TM10IOB - Not used

10 RD_RQ I DTVM update 60 P93/TM10IOC - Not used

11 POW_LED O

12 DIMMER_LED O

13 P20/SBT2 O Not used : Clock for ATSC tuner communication 63 P95/AN1 - Not used

14 P21/SBI2 I

15 P22/SBO2 O

16 P23 O

17 VDD I +3.3V 67 DIGI_PRO O Not used : HDMI control

18 FOSC O Not used 68 P71/SBI0 - Not used

19 VSS - GND 69 P72/SBO0 - Not used

20 XI I Not used : Low speed oscillator 70 P73 - Not used

21 XO O Not used : Low speed oscillator 71 P74/SBI1 - Not used

22 VDD I +3.3V 72 P75/SBO1 - Not used

23 OSCI I Oscillation for system clock (16MHz) 73 SBD5 I/O On-board writing for flash memory

24 OSCO O Oscillation for system clock (16MHz) 74 SBT5 I On-board writing for flash memory

25 MODE I Single chip mode for CPU [H: Fixed] 75 NMI I +3.3V

26 TU_POWER O Not used : Power control for tuner 76 HDMI_CEC O Not used

27 P25 - Not used 77 REMOCON I Remote control

28 TU_RESET O Reset for tuner [Reset: H] 78 V_SYNC I V. sync signal

29 PANORAMA O Not used : Panorama mode for deflection 79 IRQ3/PA3 - Not used

30 P30/KI0 - Not used 80 POWERGOOD I Not used : Power error detection [NG: H]

31 P31/KI1 - Not used 81 PA5 - Not used

32 P32/KI2 - Not used 82 RST I CPU reset [Reset: L]

33 P33/KI3 - Not used 83 VDD I +3.3V

34 AVDD I +3.3V 84 SCL1 O I2C bus (clock) for RGB & DEF PROCESS (IC301)

35 P34/KI4 - Not used 85 SDA1 I/O I2C bus (data) for RGB & DEF PROCESS (IC301)

36 P35/KI5 - Not used 86 P02 - Not used

37 OCP I B1 over current protect detection [Protection: H] 87 P03 - Not used

38 B1_POWER O B1 relay control [Power on: L] 88 P04 - Not used

39 LOB_PRO I

40 MECA_SW I Machine SW interrupt detection [SW Pushing: L] 90 P06 - Not used

41 MAIN_POW O Main power control [Power on: L] 91 P07 - Not used

42 LB_POWER O Low-B power control [Power on: L] 92 VSS - GND

43 VREF- I Reference voltage [GND Fixed] 93 P10/TM8IOA - Not used

44 X-RAYPRO I X-ray protect detection [Protection: L] 94 P11/TM8IOB - Not used

45 P45/AN5 - Not used 95 P12/TM11IOA - Not used

46 KEY2 I Front key scan voltage (CH+, VOL+/-) 96 P13/TM11IOB - Not used

47 KEY1 I Front key scan voltage (CH-, MENU) 97 P14/TM11IC - Not used

48 P80/TM14OA - Not used 98 P15/TM12IOA - Not used

49 P81/TM14OB - Not used 99 P16/TM12IOB - Not used

50 AC_IN I AC 50/60Hz for timer clock 100 P17/TM12IC - Not used

Not used :

Lighting for Power/OnTimer LED [Power ON or TIMER ON: H]

Brightness control for Power/OnTimer LED

Not used : Data receive for ATSC tuner communication

Not used : Data transmission for ATSC tuner communication

Not used : Data request for ATSC tuner communication

Low-B protect detection [Protection: H]

Rotation control (left) 55 CONVER_TX I

Rotation control (right) 56 CONVER_RX O

No.

61 AVSS - GND

62 DIGI_PHOT I Photo sensor for DIGITAL-IN illegal copy protection

64 P96/AN2 - Not used

65 P97/AN3 - Not used

66 VDD I +3.3V

89 P05 - Not used

Pin name I/O Function

Serial communication for convergence control

1-6 (No.YA455)

Page 7

2.5 MAIN PARTS LOCATION

2.5.1 PWB ASS'Y ARRANGEMENT

The PWB ASS'Y is indicated below.

No. PWB ASS'Y name AV-48P776 AV-48P786 AV-56P776 AV-56P786

1. MAIN PWB SSR-1510A-M2 ← SSR-1511A-M2 ←

2. ATSC TUNER PWB SSD-2311A-M2 ←←←

3. POWER PWB SSR-9010A-M2 ←←←

4. DEF & CONVERGENCE OUT PWB SSR-2510A-M2 ←←←

5. DIGITAL CONVERGENCE MODULE PWB SSR0K050A-M2 ← SSR0K051A-M2 ←

6. REMOTE SENSOR PWB SSR-8010A-M2 ←←←

7. R CRT SOCKET PWB SSR-3151A-M2 ←←←

8. G CRT SOCKET PWB SSR-3251A-M2 ←←←

9. B CRT SOCKET PWB SSR-3351A-M2 ←←←

10. FRONT CONTROL PWB SSR0L015A-M2 ←←←

11. USB PWB SSR-7561A-M2 ←←←

FRONT CONTROL ASS'Y

B CRT SOCKET

PWB

FRONT CONTROL

PWB

R CRT SOCKET PWB

REMOTE SENSOR PWB

DIGITAL CONVERGENCE MODULE PWB

POWER PWB

PROJECTION UNIT

G CRT SOCKET PWB

DEF & CONVERGENCE OUT PWB

G CRT SOCKET

PWB

MAIN PWB

ATSC TUNER PWB

USB PWB

AV TERMINAL BOARD

(This figure is only MAIN UNIT)

(No.YA455)1-7

Page 8

2.6 SCREEN HANDLING CAUTIONS

2.6.1 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

deforming 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.

2.6.2 SCREEN SURFACE

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

Leave the screen with protector, fresnel lens and double lenticular lens attached. If cannot

FRONT PANEL

be disassembled further.

SCREEN BRACKET

(TOP)

SCREEN BRACKET

(LEFT)

SCREEN

SCREEN BRACKET

(RIGHT)

(x 2)

[56 inch only]

SCREEN BRACKET

(BOTTOM)

(x 4)

[56 inch only]

(x 14)

1-8 (No.YA455)

Page 9

2.7 PROJECTION UNIT REPLACEMENT

2.7.1 ADJUSTMENT DURING REPLACEMENT

When replacing the three R, G and B projection units, first replace the R and B units and perform focus / screen / raster centering adjustments with reference to the G unit. Then replace the G unit and perform G focus / screen / convergence adjustment. Finally perform R & B . Convergence adjustments. Use care to simultaneously removes all three-projection units.

2.7.2 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 DEF/CONVERGENCE OUT PWB ASS'Y. [R="RHV", G="GHV", B="BHV"] Convergence yoke wires : to connector on DEF/CONVERGENCE OUT PWB ASS'Y. [R="R", G="G", B="B"]

2/4 POLE

Check that 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)

MAGNET

TAPE

CRT ASS'Y (COUPLER ASS'Y)

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

DEF. / CONVER. YOKE

ANODE wires : to DIVIDER

Do not disassembly

(No.YA455)1-9

Page 10

SECTION 3

DISASSEMBLY

3.1 DISASSEMBLY PROCEDURE

CAUTION AT DISASSEMBLY:

• Be sure to perform the SYSTEM SETTEING, at the end of the procedure.

• Make sure that the power cord is disconnected from the outlet.

• Pay special attention not to break or damage the parts.

• When removing each board, remove the connectors as required. Taking notes of the connecting points (connector numbers) makes service procedure manageable.

• Make sure that there is no bent or stain on the connectors before inserting, and firmly insert the connectors.

3.1.1 REMOVING THE SPEAKER GRILL (Fig.1)

(1) Remove 2 screws [A] from rear side. (2) Pull out the SPEAKER GRILL bottom to the front, and 4

claws which are fixing the SPEAKER GRILL are removed. (3) Remove the SPEAKER GRILL. (4) Remove the other side SPEAKER GRILL in the same

manner.

3.1.2 REMOVING THE SPEAKER (Fig.1)

• Remove the SPEAKER GRILL. (1) Remove 4 screws [B]. (2) Remove the SPEAKER. (3) Disconnect the speaker wire from speaker terminal. (4) Remove the other side SPEAKER in the same manner.

3.1.3 REMOVING THE FRONT PANEL (Fig.1)

• Remove the SPEAKER GRILL. (1) Remove 4 screws [C]. (2) The FRONT PANEL upper is pull out to the front, and 2

claws which are fixing the FRONT PANEL are removed.

(3) Remove the FRONT PANEL.

3.1.4 REMOVING THE FRONT CONTROL BOX (Fig.1)

• Remove the SPEAKER GRILL.

• Remove the FRONT PANEL. (1) Remove 5 screws [D]. (2) Remove the FRONT CONTROL BOX.

3.1.5 REMOVING THE FRONT CONTROL PWB (Fig.1)

• Remove the SPEAKER GRILL.

• Remove the FRONT PANEL.

• Remove the FRONT CONTROL BOX. (1) Remove 2 screws [E]. (2) Remove 3 screws [F] from rear side of FRONT CONTROL

BOX.

(3) Remove the FRONT CONTROL PWB.

3.1.6 REMOVING THE SCREEN ASS'Y (Fig.1)

• Remove the SPEAKER GRILL.

• Remove the FRONT PANEL.

• Remove the FRONT CONTROL BOX. (1) Remove 4 screws [G] attaching the SCREEN ASS'Y. (2) Remove 10 screws [H] from rear side. (3) Remove the SCREEN ASS'Y.

NOTE :

• Please place the SCREEN ASS'Y on a flat table without fail.

• Because of the large size, at least 2 persons are

recommended for removal and reassemble.

• Use care not to scratch the screen during work.

• During assembly, be sure to engage the left and right tabs

with the cabinet mounting positions.

• When than supporting the SCREEN ASS'Y, avoid grasping

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

3.1.7 REMOVING THE MIRROR (Fig.1)

• Remove the SPEAKER GRILL

• Remove the FRONT PANEL.

• Remove the FRONT CONTROL BOX.

• Remove the SCREEN ASS'Y. (1) Remove 9 screws [J] attaching the mirror brackets of the

upper, left and right side.

(2) Raise slightly to disengage of the mirror from the bottom

bracket. (If necessary, loosen the screws attaching the bottom bracket)

(3) Remove the MIRROR.

NOTE :

• The MIRROR is front coated. Do not touch the front of the

MIRROR.

• At least 2 persons are recommended for removable and

reassemble.

1-10 (No.YA455)

Page 11

3.1.8 REMOVING THE REAR COVER (Fig.1)

• Remove the SPEAKER GRILL.

• Remove the FRONT PANEL.

• Remove the FRONT CONTROL BOX.

• Remove the SCREEN ASS'Y. (1) Remove 2 screws [K]. (2) Remove 2 screws [L] from front side. (3) Slightly pull for backside to disengage of the REAR

COVER from hooks.

(4) Remove the REAR COVER.

NOTE :

• Because of the large size, at least 2 persons are

recommended for removal and reassemble.

3.1.9 REMOVING THE REAR PANEL (Fig.1)

(1) Remove 12 screws [M]. (2) Remove the REAR PANEL.

3.1.10 REMOVING THE PARTITION (Fig.1)

• Remove the REAR PANEL. (1) Pull out the PARTITION backward.

(No.YA455)1-11

Page 12

SCREEN ASS’Y

REAR COVER

MIRROR BRACKET

MIRROR

MIRROR BRACKET

PARTITION

FRONT

REAR PANEL

FRONT CONTROL BOX

SPEAKER

BODY

SPEAKER GRILLE

1-12 (No.YA455)

FRONT PANEL

SPEAKER GRILLE

SPEAKER

FRONT CONTROL PWB

FRONT CONTROL BOX

Fig.1

Page 13

3.1.11 REMOVING THE MAIN UNIT (Fig.3)

• Remove the SPEAKER GRILL.

• Remove the FRONT PANEL.

• Remove the FRONTCONTROL BOX.

• Remove the REAR PANEL. (1) Remove 4 screws [N] from front side of both sides. (2) Remove 2 screws [P] attaching the MAIN CHASSIS and

BODY. (3) Remove the SPEAKER CONNECTOR. (4) Pull out the MAIN UNIT to rear side.

NOTE :

• Except for confirmation of projection of images on the screen

and audio output through 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 confirmation of screen images and audio output.

• When wire clamps are removed during work, use care to

restore them precisely to their original positions. Performance can be affected if these are not returned to the original positions.

• Because of the large size, at least 2 persons are

recommended for removal and reassemble.

• When carrying the MAIN UNIT, use care not to drop, shock

or shake it.

• Do not stain or damage the lens of the PROJECTION UNIT.

• Do not look the projection side of a PROJECTION UNIT

when the image is projected.

3.1.11.1 CHECKING THE P.W. BOARD (Fig.2)

When checking the MAIN PWB, POWER PWB, DEF & CONVERGENCE OUT PWB, etc., raise the MAIN UNIT with the front side down for the make of convenience.

3.1.12 REMOVING THE FOCUS PACK (Fig.2)

• Remove the SPEAKER GRILL.

• Remove the FRONT PANEL.

• Remove the FRONTCONTROL BOX.

• Remove the REAR PANEL.

• Remove the MAIN UNIT. (1) Remove 1 screw [Q]. (2) Remove the FOCUS PACK. (3) Remove wires connecting the FOCUS PACK.

3.1.14 REMOVING THE MAIN CHASSIS (Fig.2)

• Remove the REAR PANEL. (1) Remove 2 screws [V]. (2) Pull out the MAIN CHASSIS for backside.

NOTE :

• If necessary, remove the anode wires, connectors,

respectively.

3.1.15 REMOVING THE ATSC TUNER PWB (Fig.2)

• Remove the REAR PANEL.

• Remove the AV TERMINAL BOARD.

• Remove the MAIN CHASSIS. (1) Remove 1 screw [W]. (2) Pull out the ATSC TUNER PWB.

3.1.16 REMOVING THE DIGITAL CONVERGENCE MODULE

PWB (Fig.2)

• Remove the REAR PANEL.

• Remove the MAIN CHASSIS. (1) Remove 2 screws [X]. (2) Pull out the DIGITAL CONVERGENCE MODULE PWB.

3.1.17 REMOVING THE DEF & CONVERGENCE OUT PWB

(Fig.2)

• Remove the REAR PANEL.

• Remove the MAIN CHASSIS. (1) Remove 1 screw [Y]. (2) Remove the DEF & CONVERGENCE OUT PWB.

3.1.18 REMOVING THE POWER PWB (Fig.2)

• Remove the REAR PANEL.

• Remove the MAIN CHASSIS. (1) Remove 1 screw [Z]. (2) Remove the POWER PWB.

3.1.13 REMOVING THE AV TERMINAL BOARD (Fig.2)

• Remove the REAR PANEL. (1) Remove 6 screws [R], 2 screws [S] and 2 screws [T]. (2) Pull out the POWER CORD CLAMP from AV TERMINAL

BOARD to right side.

(3) Remove the AV TERMINAL BOARD.

3.1.13.1 REMOVING THE USB PWB (Fig.2)

• Remove the REAR PANEL.

• Remove the AV TERMINAL BOARD. (1) Remove 2 screws [U]. (2) Remove the USB PWB.

(No.YA455)1-13

Page 14

3.1.19 REMOVING THE PROJECTION UNIT (Fig.2)

• Remove the SPEAKER GRILL.

• Remove the FRONT PANEL.

• Remove the FRONT CONTROL BOX.

• Remove the REAR PANEL.

• Remove the MAIN UNIT. (1) Remove the CRT SOCKET PWB. (2) Remove 4 screws [a]. (3) Pull out the PROJECTION UNIT upward.

NOTE :

• Refer to "PROJECTION UNIT REPLACEMENT" when tak-

ing out and replacing the PROJECTION UNIT.

• When wire clamps are removed during work, use care to re-

store them precisely to their original positions. Performance can be affected if these are not returned to the original positions.

3.1.20 REMOVING THE HV DIVIDER (Fig.2)

• Remove the REAR PANEL. (1) Remove 1 screw [b]. (2) Remove the HV DIVIDER.

NOTE :

• Wires of the transformer (FBT) and CRT of each PROJECTION UNIT can be removed by turning the connector portions.

• If necessary, remove the anode wires, and replacing the HV DIVIDER, take care to correctly engage the connector.

3.1.21 REMOVING THE REMOTE SENSOR PWB (Fig.2)

• Remove the REAR PANEL. (1) Remove 1 screw [c]. (2) Remove the REMOTE SENSOR PWB.

3.1.22 REMOVING THE COOLANT PAN (Fig.2)

• Remove the REAR PANEL. (1) Remove 2 screws [d]. (2) Remove the COOLANT PAN.

1-14 (No.YA455)

Page 15

MAIN UNIT

BODY

PROJECTION UNIT

FOCUS PACK

MAIN UNIT

FRONT

COOLANT PAN

REMOTE SOENSOR PWB

SPEAKER

FRONT

CONNECTOR

REAR SIDE VIEW

MAIN UNIT

BODY

MAIN CHASSIS

FRONT

Fig.3

DIVIDER

DIGITAL CONVERGENCE MODULE PWB

ATSC TUNER PWB

MAIN PWB

POWER PWB

Fig.2

USB PWB

AV TERMINAL BOARD

DEF & CONVERGENCE OUT PWB

MAIN CHASSIS

POWER CORD CLAMP

POWER CORD

(No.YA455)1-15

Page 16

3.2 MEMORY IC REPLACEMENT

• This model uses the memory IC.

• This memory IC stores data for proper operation of the video and drive circuits.

• When replacing, be sure to use an IC containing this (initial value) data.

3.2.1 MEMORY IC TABLE

Simbol Number of pins Mounting PWB Main content of data

IC702

3.2.2 MEMORY IC REPLACEMENT PROCEDURE

1. Power off

Switch off the power and disconnect the power plug.

2. Replace the memory IC

Be sure to use a memory IC written with the initial setting data.

3. Power on

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

4. Receiving channel setting

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

5. User settings

Check the user setting items according to the "FACTORY SETTING ITEM" table. Where these do not agree, refer to the OPERATING INSTRUCTIONS (USER'S GUIDE) and set the items as described.

6. SERVICE MODE setting

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

8-pin MAIN PWB Setting value of Initial setting data is memorized.

1-16 (No.YA455)

Page 17

3.2.3 SERVICE MODE SETTING ITEMS

Service Menu

1.Digital Service

2.TV-Micro Service

3.Conver Service

4.Diagnostics

Digital Service

1.Adjust

2.Memory Edit

3.Edit Config

4.All Reset

5.Select Channel Map

6.Clear Channel Map

7.Digital Tunig Test

Press [2] key

TV-Micro Service

Press [1] key

Setting items Settings Item No.

1. Digital Service

Audio system setting Adjust A001 - A010

2. TV-Micro Service

Video system setting Adjust S001 - S060

Deflection system Adjust D001 - D071

Factory system setting Fixed F001

3. Conver Service

Adjust CPA01 - CPA11

Adjust CCA01 - CCA12

Fixed CDA01 - CDA07

Fixed CBA01 - CBA111

Press [3] key

TV-Micro Service

1.Adjust

2.White Balance

3.Memory Edit

Conver Service

1.Coarse Adjust

2.Fine Adjust

3.Conver Off

Fig.1

(No.YA455)1-17

Page 18

3.2.4 SETTINGS OF FACTORY SHIPMENT

3.2.4.1 BUTTON OPERATION 3.2.4.2 REMOTE CONTROL DIRECT OPERATION

Setting item Setting position

POWER Off

CHANNEL CABLE-02

VOLUME 10

3.2.4.3 REMOTE CONTROL MENU OPERATION

INPUT TV

CHANNEL CABLE-02

VOLUME 10

MUTING OFF

DISPLAY OFF

SLEEP TIMER OFF

VIDEO STATUS DYNAMIC

THEATER PRO OFF

C.C. OFF

MTS STEREO

ASPECT PANORAMA

SOUND

Setting item Setting position

A.H.S. OFF

Smart Sound OFF

(1) INITIAL SETUP

Setting item Setting position

Noise Muting On

Language English

Front Panel Lock Off

V-Chip Off

Set Lock Code 0000

Closed Caption Auto(CC1/T1)

Auto Shut Off Off

Power Indicator High

(2) TUNER SETUP

Setting item Setting position

Auto Tuner Setup Unnecessary to set

(6) PICTURE ADJUST

Customers can adjust the picture setting of menu screen as their own like but the picture standard value during factory shipment is as below.

Setting item TINT COLOR PICTURE BRIGHT DETAIL

STANDARD 00000LOWOFFOFF

DINAMIC 00+60+10HIGHOFFOFF

THEATER -3 -3 -10 +1 0 HIGH OFF OFF

GAME 0+7-100+7LOWOFFOFF

(3) SOUND ADJUST

Setting item Setting position

Bass 0

Treble 0

Balance 0

Optical Out PCM

Turn On Volume Current

Volume Limit 50

(4) CLOCK / TIMERS

Setting item Setting position

Set Clock Manual

On / Off Timer Off

(5) EXTERNAL INPUT

Setting item Setting position

Digital-In Size Auto

Digital-In1 Audio Auto

Video Input Label All blank

COLOR

TEMPERATURE

REDUCTION

NOISE

NATURAL

CINEMA

1-18 (No.YA455)

Page 19

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

[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.

(4) Then solder leads B and C.

(No.YA455)1-19

Page 20

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 tools and parts as given below.

(2) Adjustment with the Remote Control Unit is made on the

basis of the initial setting values, however, the new setting values which set the screen to its optimum condition may

differ from the initial settings. (3) Make sure that AC power is turned on correctly. (4) Turn on the power for 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 setting value which are not

specified in the list for this adjustment. (7) Presetting before adjustment

Unless otherwise specified in the adjustment instructions,

preset the following functions with the remote control unit.

4.2 MEASURING INSTRUMENT AND FIXTURES

(1) DC voltmeter (or digital voltmeter) (2) Oscilloscope (3) Signal generator (Pattern generator)

[NTSC] (4) TV audio multiplex signal generator (5) Remote control unit (6) Jig Remote Control Unit [Parts number : LP20873-009A]

NOTE:

Please order to your parts center if you do not have this remote control unit.

SETTING POSITION

Setting item Setting position

VIDEO STATUS STANDARD

TINT / COLOR / PICTURE / BRIGHT / DETAIL

00 (Center)

COLOR TEMPERATURE LOW

NOISE REDUCTION OFF

NATURAL CINEMA AUTO

BASS / TREBLE / BALANCE 00 (Center)

ASPECT FULL

VERTICAL POSITION Center

ON/OFF TIMER OFF

AUTO SHUT OFF OFF

4.3 ADJUSTMENT FLOWCHART

WHEN REPLACING SCREEN AND PROJECTION UNIT

• Contains only the main adjustments. Also confirm other adjustments as required.

1 Projection unit

Install projection tube

LENS FOCUS

BEAM SPOT

CRT FOCUS

SCREEN & LOW LIGHT

DEFLECTION

CONVERGENCE

(match to unreplaced tube)

HIGH LIGHT

END

3 Projection unit

Install projection tube

LENS FOCUS

BEAM SPOT

CRT FOCUS

SCREEN & LOW LIGHT

DEFLECTION

G CONVERGENCE

R CONVERGENCE

B CONVERGENCE

HIGH LIGHT

END

SCREEN

LENS FOCUS

G convergence

disturbed

G CONVERGENCE

R CONVERGENCE

B CONVERGENCE

END

1-20 (No.YA455)

Page 21

4.4 BASIC OPERATION OF SERVICE MENU

TVM Memory Edit Addr (H) 00

0 1 2 3 4 5 6 7 04 01 06 58 FF FF FF FF

8 9 A B C D E F 11 29 00 00 01 FF FD FD

Digital Memory Edit Addr (H) 0000

0 1 2 3 4 5 6 7 04 01 06 58 FF FF FF FF

8 9 A B C D E F 11 29 00 00 01 FF FD FD

SERVICE MENU

Service Menu

1.Digital Service

1. Digital Service

Digital Service

1.Adjust

2.Memory Edit

3.Edit Config

4.All Reset

5.Select Channel Map

6.Clear Channel Map

7.Digital Tunig Test

A001- A010

1.Adjust

A001 IN LAVEL 6 NTSC 43Full Dynamic H

2.TV-Micro Service

3.Conver Service

4.Diagnostics

1. Adjust

S001 BRIGHT 054 NTSC 43Full DYN H

2. TV-Micro Service

TV-Micro Service

1.Adjust

2.White Balance

3.Memory Edit

4.Diagnostics [Refer to SECTION 5]

3. Conver Service

Conver Service

1.Coarse Adjust

2.Fine Adjust

3.Conver Off

1. Coarse Adjust

CPA01 FINE OFF 0

2. Memory Edit

Digital Memory Edit Addr (H) 0000

0 1 2 3 4 5 6 7 04 01 06 58 FF FF FF FF

8 9 A B C D E F 11 29 00 00 01 FF FD FD

3. Edit Config

4. All Reset

5. Select Channel Map

DO NOT ADJUST

D001 - D071

2. White Balance

BR 054 DRV R031 B031 CUT R031 G031 B031

3. Memory Edit

S001- S060

S001 BRIGHT 054 NTSC 43Full DYN H

D001 V.SIZE 022 NTSC 43Full DYN H

F001

F001 DTVM RST 001 NTSC 43Full DYN H

TVM Memory Edit Addr (H) 00

0 1 2 3 4 5 6 7 04 01 06 58 FF FF FF FF

8 9 A B C D E F 11 29 00 00 01 FF FD FD

CPA01 - CPA11

CPA01 FINE OFF 0

CCA01 - CCA12

CCA01 C H CENT 0

DO NOT ADJUST

CDA01 - CDA07

CDA01 DF DC 0

CBA01 - CBA111

CBA01 ADD RATIO 0

2. Fine Adjust

3. Conver Off

6. Clear Channel Map

7. Digital Tunig Test

(No.YA455)1-21

Page 22

4.5 SERVICE MODE

Service Menu

1.Digital Service

2.T

-Micro Servic

3.Co

er Servic

4.Diagnostics

4.5.1 BASIC OPERATION OF SERVICE MODE

Operate the SERVICE MODE with the REMOTE CONTROL UNIT.

4.5.1.1 HOW TO ENTER THE SERVICE MODE

(1) Set to "0 minutes" using the [SLEEP TIMER] key. (2) While "0 minutes" is displayed, press the [VIDEO

STATUS] key and [DISPLAY] key simultaneously. (3) Enter the SERVICE MODE (Fig.1)

SERVICE MENU SCREEN

Service Menu

1.Digital Service

2.T

V-Micro Servic

3.Co

nver Servic

4.Diagnostics

4.5.1.2 HOW TO EXIT THE SERVICE MODE Press the [ MENU ] key to exit the SERVICE MODE.

4.5.1.3 HOW TO STORE OF SETTING VALUE

When adjustment is completed, press the [MUTING] key to memorize the adjustment value.

NOTE:

If not to do it, adjustment data is not memorized to the memory IC. And if exit the adjustment mode before memorize the data, the adjustment value which you change is canceled.

Fig.1

4.5.1.4 SERVICE MODE SELECT KEY LOCATION

TV/CATV switch

DISPLAY

SLEEP TIMER

VIDEO STATUS

MUTING

VOL -

CATV VCR

SLEEP TIMER

THEATER PRO

VIDEO STATUS

ASPECT

SUB CH

FAVORITE

MUTING

VOL

–

VCR CHANNEL

PREV NEXT

REC

OPEN/CLOSE

POWER

DVD

DISPLAY C.C.

TUNE

ML/MTS SOUND GUIDE

CH +

CH –

VCR/DVD

POWER

PLAY FFREW

STOP PAUSE

STILL/PAUSE

RM-C1272G

INPUT

RETURN+

VOL

BACK

TV/VCR

VCR/DVD switch

POWER

NUMBER

/TV

CH +

VOL +

BACK

CH -

1-22 (No.YA455)

Page 23

4.5.2 DESCRIPTION OF STATUS DISPLAY

Digital Memory Edit Addr (H) 0000

0 1 2 3 4 5 6 7 04 01 06 58 FF FF FF FF

8 9 A B C D E F 11 29 00 00 01 FF FD FD

The status display on the upper part of the SERVICE MODE screen is common (to all models).

4.5.2.1 DIGITAL SERVICE MODE

1. Adjust

(4) WHITE BALANCE

State of the WHITE BALANCE is displayed.

SETTING ITEM No.

A001 IN LEVEL 6 NTSC 43Full Dynamic H

SETTING ITEM

SETTING VALUE (DATA)

H: HIGH L: LOW

(5) SETTING ITEM NAME

Setting item name are displayed. For the setting item names to be displayed, refer to "INITIAL SETTING VALUE OF SERVICE MODE".

(6) SETTING ITEM NO.

Setting item numbers are displayed. The setting item numbers

SIGNAL SYSTEM

SCREEN MODE

VIDEO STATUS

WHITE BALANCE

to be displayed are listed below.

Item No. Setting item

(1) SIGNAL SYSTEM

The signal displayed on the screen is displayed.

NTSC : 525i (Composite / S-video input) 525i : 525i (Component input) 525p : 525p (Component input) 750p : 750p (Component input)

A001 - A010 Audio system setting

SELECTION OF SETTING ITEM

• [CH+] / [CH-] key. Change the setting items up/ down.

A001... ↔ A010

1125i : 1125i (Component input) D525i : ATSC 525i D525p : ATSC 525p D750p : ATSC 750p D1125i : ATSC 1125i H525i : HDMI 525i

(7) SETTING VALUE (DATA)

The SETTING VALUE is displayed.

CHANGE OF SETTING VALUE (DATA)

• [VOL+] / [VOL-] key. Change the setting values up/down.

H525pS1 : HDMI 525p size1 H525pS2 : HDMI 525p size2 H750p : HDMI 750p H1125i : HDMI 1125i

MEMORY OF SETTING VALUE (DATA)

Changed setting value is memorized by pressing

[MUTING] key.

2. Memory Edit

(2) SCREEN MODE

State of the ASPECT is displayed.

43Full : FULL (Input signal 4 : 3) 43Pano : PANORAMA (Input signal 4 : 3)

Data in the EEPROM is edited on this screen. [Do not adjust]

CAUTION:

This mode is not used in the ADJUSTMENT. Press the

[BACK] key to return to the SERVICE MENU SCREEN. 43Cinema : CINEMA (Input signal 4 : 3) 43Regular : REGULAR (Input signal 4 : 3)

MEMORY EDIT MODE

16Full : FULL (Input signal 16 : 9) 16Pano : PANORAMA ZOOM (Input signal 16 : 9) 16Cinema : CINEMA ZOOM (Input signal 16 : 9) 16Slim : SLIM (Input signal 16 : 9)

Digital Memory Edit Addr (H) 0000

0 1 2 3 4 5 6 7 04 01 06 58 FF FF FF FF

8 9 A B C D E F 11 29 00 00 01 FF FD FD

(3) VIDEO STATUS

State of the VIDEO STATUS is displayed.

Standard : STANDARD Dynamic : DYNAMIC Theater : THEATER Game : GAME

(No.YA455)1-23

Page 24

3. Edit Config

Setting value in the digital module is edited and confirmed on this screen. [Do not adjust]

CAUTION:

This mode is not used in the ADJUSTMENT. Press the

[BACK] key to return to the SERVICE MENU SCREEN.

6. Clear Channel Map

Channel map is cleared on this screen. [Do not adjust]

CAUTION:

This mode is not used in the ADJUSTMENT. Press the [BACK] key to return to the SERVICE MENU SCREEN.

EDIT CONFIG MODE

4. All Reset

Data in the EEPROM is all reset on this screen. [Do not adjust]

CAUTION:

This mode is not used in the ADJUSTMENT. Press the [BACK] key to return to the SERVICE MENU SCREEN.

ALL RESET MODE

CLEAR CHANNEL MAP MODE

7. Digital Tuning Test

Digital channel tuning is tested on this screen. [Do not adjust]

CAUTION:

This mode is not used in the ADJUSTMENT. Press the [BACK] key to return to the SERVICE MENU SCREEN.

DIGITAL TUNING TEST MODE

5. Select Channel Map

Channel map is forcibly rewritten on this screen.[Do not adjust]

CAUTION:

This mode is not used in the ADJUSTMENT. Press the [BACK] key to return to the SERVICE MENU SCREEN.

SELECT CHANNEL MAP MODE

1-24 (No.YA455)

Page 25

4.5.2.2 TV-MICRO SERVICE MODE

1. Adjust

SETTING ITEM No.

SETTING ITEM

SETTING VALUE (DATA)

(5) SETTING ITEM NAME

Setting item name are displayed. For the setting item names

to be displayed, refer to "INITIAL SETTING VALUE OF

SERVICE MODE".

S001 BRIGHT 064 NTSC 43Full DYN H

SIGNAL SYSTEM

SCREEN MODE

VIDEO STATUS

(1) SIGNAL SYSTEM

The signal displayed on the screen is displayed.

NTSC : 525i (Composite / S-video input) 525i : 525i (Component input) 525p : 525p (Component input) 750p : 750p (Component input) 1125i : 1125i (Component input) D525i : ATSC 525i D525p : ATSC 525p D750p : ATSC 750p D1125i : ATSC 1125i H525i : HDMI 525i H525pS1 : HDMI 525p size1 H525pS2 : HDMI 525p size2 H750p : HDMI 750p H1125i : HDMI 1125i

WHITE BALANCE

(6) SETTING ITEM NO.

Setting item numbers are displayed. The setting item numbers to be displayed are listed below.

Item No. Setting item

S001 - S060 Video system setting

D001 - D071 Deflection system

F001 Factory system setting

SELECTION OF SETTING ITEM

• [CH+] / [CH-] key. Change the setting items up/ down.

S001... ↔ D001... ↔ F001...↔ S001...

• [SLEEP TIMER] key. Switch to the next items.

S001 → D001 → F001 → S001

(7) SETTING VALUE (DATA)

The SETTING VALUE is displayed.

CHANGE OF SETTING VALUE (DATA)

• [VOL+] / [VOL-] key. Change the setting values up/down.

MEMORY OF SETTING VALUE (DATA)

Changed setting value is memorized by pressing

[MUTING] key.

(2) SCREEN MODE

State of the ASPECT is displayed.

43Full : FULL (Input signal 4 : 3) 43Pano : PANORAMA (Input signal 4 : 3) 43Cinema : CINEMA (Input signal 4 : 3) 43Regular : REGULAR (Input signal 4 : 3) 16Full : FULL (Input signal 16 : 9) 16Pano : PANORAMA ZOOM (Input signal 16 : 9) 16Cinema : CINEMA ZOOM (Input signal 16 : 9) 16Slim : SLIM (Input signal 16 : 9)

(3) VIDEO STATUS

State of the VIDEO STATUS is displayed.

STD : STANDARD DYN : DYNAMIC THEA : THEATER GAME : GAME

(4) WHITE BALANCE

State of the WHITE BALANCE is displayed.

H: HIGH L: LOW

(No.YA455)1-25

Page 26

2. White Balance

TVM Memory Edit Addr (H) 00

0 1 2 3 4 5 6 7 04 01 06 58 FF FF FF FF

8 9 A B C D E F 11 29 00 00 01 FF FD FD

White balance data is adjusted on this screen.

SETTING VALUE (DATA)

BRIGHTNESS

DRIVE

CUTOFF

BR 054 DRV R031 B031 CUT R031 G031 B031

BRIGHTNESS

[VOL+] key : BRIGHT is up [VOL-] key : BRIGHT is down

DRIVE

[2] key : DRIVE R is up [5] key : DRIVE R is down [3] key : DRIVE B is up [6] key : DRIVE B is down

3. Memory Edit

Data in the EEPROM is edited on this screen. [Do not adjust]

CAUTION:

This mode is not used in the ADJUSTMENT. Press the [BACK] key to return to the SERVICE MENU SCREEN.

MEMORY EDIT MODE

TVM Memory Edit Addr (H) 00

0 1 2 3 4 5 6 7 04 01 06 58 FF FF FF FF

8 9 A B C D E F 11 29 00 00 01 FF FD FD

CUTOFF

[1] key : HORIZONTAL LINE on [4] key : HORIZONTAL LINE off [7] key : CUTOFF G is up [TUNE] key

: CUTOFF G is down [8] key : CUTOFF R is up [0] key : CUTOFF R is down [9] key : CUTOFF B is up [RETURN+] key : CUTOFF B is down

MEMORY OF SETTING VALUE (DATA)

Changed setting value is memorized by pressing [MUTING] key.

1-26 (No.YA455)

Page 27

4.5.2.3 CONVER SERVICE MODE

1. Coarse Adjust

Setting the CONVERGENCE PHASE and LINE (coarse) adjustment.

• This setting is described in the CONVERGENCE

2. Fine Adjust

Setting the CONVERGENCE POINT (fine).

• This setting is described in the CONVERGENCE adjustment.

FINE ADJUST MODE

adjustment.

COARSE ADJUST MODE

CPA01 FINE OFF 0

SETTING VALUE

SETTING ITEM NAME

SETTING ITEM No.

CPA01~CPA11 CCA01~CCA12 CDA01~CDA07

CBA01~CBA111

• Press [INPUT] key

CBA01CCA01 CDA01CPA01

Skip change

3. Conver Off

For FOCUS & BEAM SPOT adjustment or RASTER CENTERING adjustment, 2 test patterns are selectable without convergence operation on this screen.

• Press [INPUT] key to change the crosshatch pattern and the dot pattern.

(No.YA455)1-27

Page 28

4.6 INITIAL SETTING VALUE OF SERVICE MODE

(1) Adjustment of the SERVICE MODE is made on the basis of the initial setting values ; however, the new setting values which set

the screen in its optimum condition may differ from the initial setting. (2) Do not change the initial setting values of the setting items NOT LISTED IN ADJUSTMENT PROCEDURE. (3) --- : This mark described in each table shows "Cannot adjust it."

4.6.1 [1. Digital Service]

4.6.1.1 SOUND SETTING

No. Setting item

A001 IN LEVEL 0 - 15 6

A002 LOW SEP 0 - 63 30

A003 HIGH SEP 0 - 63 30

A004 BASS OFS -128 - 127 0

A005 TREB OFS -128 - 127 0

4.6.2 [2. TV-Micro Service]

4.6.2.1 VIDEO SETTING

No. Setting item

S001 BRIGHT 000 - 063 031 --- ---

S002 PICTURE 000 - 063 025 --- ---

S003 COLOR 000 - 063 044 --- ---

S004 TINT 000 - 063 031 --- ---

S005 DETAIL 000 - 063 041 --- 041

S006 BRIGHT+- -128 - +127 --- 000 -009

S007 PICT+- -128 - +127 --- 000 000

S008 COLOR+- -128 - +127 --- 000 000

S009 TINT+- -128 - +127 --- 000 000

S010 DETAIL+- -128 - +127 --- 000 ---

Variable range

Variable

range

Initial setting value

STANDARD THEATER STANDARD

No. Setting item

A006 AHS MVE -128 - 127 -3

A007 AHS MSC -128 - 127 -1

A008 AGC FLAT 0 - 3 1

A009 BBE BASS -128 - 127 0

A010 BBE TREB -128 - 127 0

EXTERNAL

(S/CV)

Variable range

Initial setting value

No. Setting item

S003 COLOR 000 - 063 039 --- --- 031 --- ---

S004 TINT 000 - 063 031 --- --- 031 --- ---

S005 DETAIL 000 - 063 031 031 036 031 031 031

S006 BRIGHT+- -128 - +127 000 --- --- 000 --- ---

S007 PICT+- -128 - +127 000 --- --- 000 --- ---

S008 COLOR+- -128 - +127 --- -001 -002 --- 000 000

S009 TINT+- -128 - +127 --- 000 000 --- 000 000

1-28 (No.YA455)

Variable

range

EXTERNAL (COMPONENT) ATSC / HDMI

STANDARD

525i 525p 1125i/750p 525i 525p 1125i/750p

Page 29

Initial setting value

No. Setting item

S011 R CUTOFF 000 - 063 036 --- --- --- --- --- --- ---

S012 G CUTOFF 000 - 063 036 --- --- --- --- --- --- ---

S013 B CUTOFF 000 - 063 036 --- --- --- --- --- --- ---

S014 R DRIVE 000 - 063 031 --- --- --- --- --- --- ---

S015 B DRIVE 000 - 063 031 --- --- --- --- --- --- ---

S016 R CUT+- -128 - +127 --- 000 000 000 000 --- --- ---

S017 G CUT+- -128 - +127 --- 000 000 000 000 --- --- ---

S018 B CUT+- -128 - +127 --- 000 000 000 000 --- --- ---

S019 R DRV+- -128 - +127 --- +002 +006 +003 000 --- --- ---

S020 B DRV+- -128 - +127 --- +003 -012 -004 000 --- --- ---

Variable

range

LOW HIGH LOW HIGH LOW HIGH LOW HIGH

RF/EXTERNAL(S/CV) EXTERNAL(COMPONENT)/ATSC/HDMI

STANDARD THEATER STANDARD THEATER

No. Setting item

S021 COL AXIS 000 - 003 002 002

S022 CB OFS 000 - 063 021 032

S023 CR OFS 000 - 063 032 032

S024 SYSTEM 000 - 003 003 003 003 003 003

S025 SHP F0 000 - 001 001 001 001 001 001

S026 SHP F1 000 - 003 001 001 001 001 001

No. Setting item

S027 LTI LEV 000 - 003 002 002

S028 LTI MODE 000 - 003 002 002

S029 DPIC LEV 000 - 003 003 003

S030 DC TRAN 000 - 003 001 001

S031 CTI LEV 000 - 003 001 001

S032 CTI MODE 000 - 003 000 000

S033 DCOL 000 - 003 000 000

S034 ABL MODE 000 - 003 002 002

S035 GAMMA 000 - 003 002 002

S036 GAMMA_L 000 - 001 001 001

S037 SUB BRI 000 - 063 048 048

S038 SUB CONT 000 - 015 008 008

S039 WB SW 000 - 001 001 001

Variable

range

Variable

range

Initial setting value

STANDARD

THEATER

EXTERNAL(S/CV)

Initial setting value

EXTERNAL(COMPONENT) / ATSC / HDMI

525i 525p 1125i/750p

(No.YA455)1-29

Page 30

No. Setting item

S040 SHP CD 000 - 003 002

S041 CD OFF 000 - 001 000

S042 VM LEV 000 - 003 003

S043 VM DLY 000 - 003 002

S044 VM COR 000 - 003 002

S045 VM F0 000 - 003 000

S046 VM LMT 000 - 003 003

S047 Y OFFSET 000 - 015 007

S048 PRE OVER 000 - 003 000

S049 AGING W 000 - 001 000

S050 AGING B 000 - 001 000

S051 BLK BTM 000 - 003 000

S052 PLMT LEV 000 - 003 000

S053 G DRIVE 000 - 063 031

S054 LRGB2 LV 000 - 015 008

S055 P ABL 000 - 015 001

S056 ABL TH 000 - 015 015

S057 S ABL 000 - 003 002

S058 AKBOFF 000 - 001 001

S059 BLK OFF 000 - 001 000

S060 VMOFF DE -128 - +127 000

4.6.2.2 DEFLECTION SETTING

No. Setting item

D001 V.SIZE 000 - 063 028 ---

D002 V.SIZE+- -128 - +127 --- 000

D003 EW 000 - 063 010 ---

D004 EW+- -128 - +127 --- 000

D005 H.SIZE 000 - 063 029 ---

D006 H.SIZE+- -128 - +127 --- 000

D007 V.SCORE 000 - 015 007 ---

D008 V.SCOR+- -128 - +127 --- 000

D009 V.LIN 000 - 015 007 ---

D010 V.LIN+- -128 - +127 --- 000

D011 V.CENT 000 - 063 032 ---

D012 EW.TRAP 000 - 063 025 ---

D013 EW.TRA+- -128 - +127 --- 000

D014 BOT.CORN 000 - 063 041 ---

D015 BOT.CO+- -128 - +127 --- 000

D016 TOP.CORN 000 - 063 036 ---

D017 TOP.CO+- -128 - +127 --- 000

D018 V.EHT 000 - 015 000 ---

D019 H.EHT 000 - 015 005 ---

Variable

range

Variable

range

Initial setting value

Full Cinema Regular

Panorama

Initial setting value

No. Setting item

D020 H CENT 000 - 063 030 ---

D021 H CENT+- -128 - +127 --- 000

D022 BOW 000 - 063 032 ---

D023 BOW+- -128 - +127 --- 000

D024 PARALLEL 000 - 063 029 ---

D025 PARALL+- -128 - +127 --- 000

D026 EW DC 000 - 001 000 ---

D027 PIN COMP 000 - 007 000 ---

D028 BOT UCP 000 - 003 000 ---

D029 B UCP+- -128 - +127 --- 000

D030 TOP UCP 000 - 003 000 ---

D031 T UCP+- -128 - +127 --- 000

D032 BOT UCG 000 - 003 000 ---

D033 B UCG+- -128 - +127 --- 000

D034 TOP UCG 000 - 003 000 ---

D035 T UCG+- -128 - +127 --- 000

D036 UC POL 000 - 001 000 ---

D037 UC POL+- -128 - +127 --- 000

D038 SYNC PH 000 - 001 000 ---

D039 AFC MODE 000 - 003 003 ---

D040 AFC EHT 000 - 007 000 ---

D041 HBLK SW 000 - 001 000 ---

D042 L BLK 000 - 063 063 ---

D043 R BLK 000 - 063 000 ---

D044 CLP PH 000 - 003 000 ---

D045 CLP SHFT 000 - 001 001 ---

D046 CLP GATE 000 - 001 000 ---

D047 V ASP 000 - 063 003 ---

D048 ASP SW 000 - 001 000 ---

D049 ZOOM SW 000 - 001 000 ---

D050 JMP SW 000 - 001 000 ---

D051 V SCROLL 000 - 063 035 ---

D052 BOT VLIN 000 - 015 000 ---

D053 B VLIN+- -128 - +127 --- 000

D054 TOP VLIN 000 - 015 002 ---

D055 T VLIN+- -128 - +127 --- 000

D056 VSW0 DCH 000 - 003 000 ---

D057 VSW0 DCL 000 - 015 000 ---

D058 VSW1 DC 000 - 015 000 ---

D059 VSW0 AMP 000 - 031 000 ---

D060 VSW1 AMP 000 - 031 000 ---

D061 MPPR DC 000 - 015 000 ---

D062 MPPR AMP 000 - 015 000 ---

D063 HCPR DC 000 - 063 000 ---

Variable

range

Full

Cinema

Regular

Panorama

1-30 (No.YA455)

Page 31

Initial setting value

No. Setting item

D064 HCPR PH 000 - 063 000 ---

D065 HCPR AMP 000 - 063 000 ---

D066 VDRV SW 000 - 001 000 ---

D067 VBLK SW 000 - 001 000 ---

D068 BOT BLK 000 - 015 000 ---

D069 TOP BLK 000 - 015 005 ---

D070 RST SW 000 - 001 000 ---

D071 AKBTIM 000 - 031 000 ---

4.6.2.3 FACTORY SETTING

No. Setting item

F001 DTVM RST 000 - 001 001

4.6.3 [3. Conver Service]

4.6.3.1 1. Coarse Adjust

No. Setting item

CPA01 FINE OFF 0 - 1 0

CPA02 TPOPH 0 - 4095 114

CPA03 TPOPV LINE 0 - 255 17

CPA04 TPOPV OFST 0 - 7 0

CPA05 FINEP 0 - 4095 1245

CPA06 STARTLIN A 0 - 127 56

CPA07 STARTLIN B -7 - 7 -1

CPA08 COARS PHAS 0 - 15 0

CPA09 COARS OFST -511 - 511 -50

CPA10 V1OFSTA -511 - 511 7

CPA11 V1OFSTB -31 - 31 0

No. Setting item

CCA01 C H CENT -512 - 511 0 -246 395

CCA02 C H SIZE -512 - 511 -27 -54 16

CCA03 C H LIN -512 - 511 -96 240 -348

CCA04 C H SKEW -512 - 511 0 0 -10

CCA05 C EW PIN -512 - 511 -91 -26 -17

CCA06 C H BOW -512 - 511 0 -30 21

CCA07 C V CENT -512 - 511 -19 8 12

CCA08 C V SKEW -512 - 511 0 0 4

CCA09 C V SIZE -512 - 511 -108 -77 -105

CCA10 C V LIN -512 - 511 15 12 8

CCA11 C V KEY -512 - 511 0 114 -77

CCA12 C TB PIN -512 - 511 280 153 230

Variable

range

Variable

range

Variable

range

Variable

range

Full

Cinema

Regular

Initial setting value

GREEN

Panorama

RED BLUE

No. Setting item

CDA01 DF DC -512 - 511 0

CDA02 DF H1 -512 - 511 0

CDA03 DF H2 -512 - 511 0

CDA04 DF V1 -512 - 511 0

CDA05 DF V2 -512 - 511 0

CDA06 DF V1H1 -512 - 511 0

CDA07 DF V2H1 -512 - 511 0

No. Setting item

CBA01 ADD RATIO 0 - 3 0

CBA02 INTERLACE 0 - 1 0

CBA03 CKOUT FRE 0 - 3 0

CBA04 DF MUTE 0 - 1 0

CBA05 ODD LEVEL 0 - 1 1

CBA06 HRET SAMPL 0 - 3 2

CBA07 HRETS 0 - 1 0

CBA08 HRET TIME -512 - 511 0

CBA09 H1 CENT RE 0 - 1 1

CBA10 DF CENT RE 0 - 1 0

CBA11 VIPOL 0 - 127 68

CBA12 V1CNTUP 0 - 4095 466

CBA13 RVCLMP STR 0 - 15 0

CBA14 RVCLMP TER 0 - 15 0

CBA15 RVCLMP CEN 0 - 1 0

CBA16 GVCLMP STR 0 - 15 0

CBA17 GVCLMP TER 0 - 15 0

CBA18 GVCLMP CEN 0 - 1 0

CBA19 BVCLMP STR 0 - 15 0

CBA20 BVCLMP TER 0 - 15 0

CBA21 BVCLMP CEN 0 - 1 0

CBA22 RHCLMP STR 0 - 15 0

CBA23 RHCLMP TER 0 - 15 0

CBA24 RHCLMP CEN 0 - 1 0

CBA25 GHCLMP STR 0 - 15 0

CBA26 GHCLMP TER 0 - 15 0

CBA27 GHCLMP CEN 0 - 1 0

CBA28 BHCLMP STR 0 - 15 0

CBA29 BHCLMP TER 0 - 15 0

CBA30 BHCLMP CEN 0 - 1 0

CBA31 PATTERN H 0 - 3 1

CBA32 PATTERN W 0 - 3 1

CBA33 HATCH PAT 0 - 15 1

CBA34 CURS SPACE 0 - 7 1

CBA35 HATCH COL 0 - 7 2

CBA36 BORDER COL 0 - 7 0

Variable

range

Variable

range

Initial setting value

(No.YA455)1-31

Page 32

No. Setting item

CBA37 CURSOR COL 0 - 7 2

CBA38 CROSS COL 0 - 7 0

CBA39 SQUARE COL 0 - 7 0

CBA40 XCPOS VPOS 0 - 31 16

CBA41 XCPOS HPOS 0 - 31 16

CBA42 CURSOR PAT 0 - 3 0

CBA43 MTPH1

CBA44 MTPH2

CBA45 MTPV1

CBA46 MTPV2

CBA47 YSP -7 - 7 0

CBA48 BL1POSV 0 - 2047 0

CBA49 BL1POSH 0 - 4095 0

CBA50 BL2POSV 0 - 2047 0

CBA51 BL2POSH 0 - 4095 0

CBA52 XLPOSV 0 - 2047 580

CBA53 XLPOSH 0 - 4095 1012

CBA54 XLLENV 0 - 2047 276

CBA55 XLLENH 0 - 4095 450

CBA56 SQ1POSV 0 - 2047 30

CBA57 SQ1POSH 0 - 4095 1024

CBA58 SQ1VSIZE 0 - 255 128

CBA59 SQ1HSIZE 0 - 255 100

CBA60 SQ2POSV 0 - 2047 594

CBA61 SQ2POSH 0 - 4095 282

CBA62 SQ2VSIZE 0 - 255 100

CBA63 SQ2HSIZE 0 - 255 110

CBA64 SQ3POSV 0 - 2047 1008

CBA65 SQ3POSH 0 - 4095 1024

CBA66 SQ3VSIZE 0 - 255 160

CBA67 SQ3HSIZE 0 - 255 100

CBA68 SQ4POSV 0 - 2047 594

CBA69 SQ4POSH 0 - 4095 1642

CBA70 SQ4VSIZE 0 - 255 100

CBA71 SQ4HSIZE 0 - 255 116

CBA72 SQ5POSV 0 - 2047 547

CBA73 SQ5POSH 0 - 4095 1013

CBA74 SQ5VSIZE 0 - 255 70

CBA75 SQ5HSIZE 0 - 255 4

CBA76 SQ6POSV 0 - 2047 580

CBA77 SQ6POSH 0 - 4095 984

CBA78 SQ6VSIZE 0 - 255 4

CBA79 SQ6HSIZE 0 - 255 64

CBA80 SQ7POSV 0 - 2047 456

CBA81 SQ7POSH 0 - 4095 888

Variable

range

-32767 - 32767

Initial setting value

No. Setting item

CBA82 SQ7VSIZE 0 - 255 255

CBA83 SQ7HSIZE 0 - 255 255

CBA84 SQ8POSV 0 - 2047 0

CBA85 SQ8POSH 0 - 4095 0

CBA86 SQ8VSIZE 0 - 255 0

CBA87 SQ8HSIZE 0 - 255 0

CBA88 ODEV 0 - 4095 1584

CBA89 DFP 0 - 4095 0

CBA90 PWMH1P 0 - 4095 0

CBA91 PWMH1W 0 - 4095 0

CBA92 PWMV1P 0 - 1023 30

CBA93 PWMV1W 0 - 1023 1

CBA94 PWMH2P 0 - 4095 0

CBA95 PWMH2W 0 - 4095 217

CBA96 PWMV2P 0 - 1023 0

CBA97 PWMV2W 0 - 1023 0

CBA98 PWMH3P 0 - 4095 0

CBA99 PWMH3W 0 - 4095 0

CBA100 PWMV3P 0 - 1023 0

CBA101 PWMV3W 0 - 1023 0

CBA102 PWMV4P 0 - 1023 0

CBA103 PWMV4W 0 - 1023 0

CBA104 TPMT1HP 0 - 4095 0

CBA105 TPMT1HW 0 - 4095 294

CBA106 TPMT1VP 0 - 1023 0

CBA107 TPMT1VW 0 - 1023 0

CBA108 TPMT2HP 0 - 4095 0

CBA109 TPMT2HW 0 - 4095 0

CBA110 TPMT2VP 0 - 1023 0

CBA111 TPMT2VW 0 - 1023 0

Variable

range

Initial setting value

1-32 (No.YA455)

Page 33

4.7 ADJUSTMENT PROCEDURE

4.7.1 CHECK ITEMS

Item

X-RAY PROTECTOR check

Measuring

instrument

Resistor

[6.8kΩ±34Ω

(1/4W) ]

S1 connector 2 pin : X-Ray2 3 pin : X-Ray1 [DEF&CONVE RGENCE OUT PWB]

CONNECTOR

12345

Test point Adjustment part Description

(1) Receive NTSC whole black signal.

(2) Connect resistor 6.8kΩ±34Ω (1/4W) between 2 pin

and 3 pin of the S1 connector. (3) Make sure that the screen picture disappears. (4) Unplug the power cord.

(5) Remove the resistor [6.8kΩ] from S1 connector.

(6) Again plug the power cord, make sure that the

normal picture is displayed on the screen.

RESISTOR

6.8K 34 1/4W

X-RAY2

TP-E

( )

HIGH VOLTAGE check

X-RAY1NCTP-91B

140.0V

Signal generator

HV voltmeter

SERVICE CONNECTOR

54321

D561D562

TP-E

R562

R563

R561

FR311 D311

C311

CN008

X-RAY

TP-91

R565

CRT anode (1) Receive NTSC whole black signal.

(2) Connect the HV voltmeter between CRT anode and

GND. (3) Check the high voltage DC 31.6kV+1.0kV / -1.5kV.

T502

FBT

(No.YA455)1-33

Page 34

4.7.2 FOCUS & BEAM SPOT ADJUSTMENT

Item

FOCUS & BEAM SPOT adjustment

Measuring

instrument

Similar adhesive (Securing

Test point Adjustment part Description

adhesive)

Remote control unit

LENS FOCUS

SCREW

PROJECTION UNIT & LENS ASS'Y

BEAM SPOT adjustment point

4 pole magnet adjustment

DEFLECTION

YOKE

4 POLE MAGNET

(CRT adjustment location)

< Defocus > < Optimum Focus >

optimum center and defocus

round as circle

center should be same point

2 pole magnet adjustment

2 POLE MAGNET

Conver Service [3. Conver Off]

R Def. yoke (DY) G 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)]

4 pole magnet 2 pole magnet [PROJECTION UNIT

(R / G / B CRT neck)]

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

CENTERING

MAGNET

(1) Select FULL mode with [ASPECT] key. (2) Select DYNAMIC mode with [VIDEO STATUS] key. (3) Select 3. Conver Off from Conver Service menu,

then dot pattern is appear. (4) Press [INPUT] key to appear crosshatch pattern. (5) Adjust the R, G and B DY position to mark straight

horizontal line.

LENS FOCUS

(1) Make a red single color.

NOTE :

When making a single color, while adjusting focus of one CRT, put the cap on other lens.

(2) Turn the R 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, slightly shift the center

focus to obtain overall balanced focus.

(3) In the same manner, produce green and blue single

color and adjust their respective focus.

(4) Fix the LENS FOCUS screws.

NOTE :

There is not a difference in the focus in the top and the bottom, on either side, in the diagonal. When the difference of the focus is big, remove a main lens and put a washer between the main lens and the coupler, and then re-adjust it.

BEAM SPOT

(5) Change dot pattern with [INPUT] key. (6) Make a red single color. (7) Turn the R FOCUS VR clockwise from just focus

point, to set the dot diameter to approx. 30mm.

(8) Turn the 4 pole magnet of the projection unit CRT

neck and make beam shape round as circle on the

position between center and both ends of the

screen.

(9) Adjust the R FOCUS VR for optimum focus at the

position indicated in the figure.

(10) Turn the 2 pole magnet of the CRT neck as optimum

focus and defocus center should become the same

point.

(11) In the same manner, adjust for the green and blue

single color focus.

(12) Secure the 4 and 2 pole magnets with similar

adhesive.

CRT FOCUS

(13) Change crosshatch pattern with [INPUT] key. (14) Select DYNAMIC mode with [VIDEO STATUS] key. (15) Make a red single color. (16) Adjust the R FOCUS VR for optimum focus at the

position indicated in the figure.

(17) In the same manner, adjust for the green and blue

single color focus.

1-34 (No.YA455)

red

blueblue

green

CRT FOCUS adjustment point

Page 35

4.7.3 DEFLECTION & CONVERGENCE 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 adjustment in FULL mode should be done, then the data for the other ASPECT mode is corrected in the respective value at the same time.

4.7.3.1 FLOWCHART OF ADJUSTMENT

CAUTION:

All adjustments of the DEFLECTION circuit for this model should be carried out under the status without convergence operation. To enter the mode without convergence operation, the remote control unit (with LC display) [LP20873-009] is required. The required input code to switch off the convergence circuit is "0FE1", the method is described as follows.

(1) Take out the batteries from the remote control unit if the batteries are inserted. (2) Insert the batteries while pressing and holding [4], [5] and [6] keys simultaneously. (3) While viewing the LC display of the remote control unit, set the value to "0" using the [START DEBUT +] / [START DEBUT -]

keys. (4) In the same manner, set the value to "F" using the [STOP FIN +] / [STOP FIN -] keys. (5) In the same manner, set the value to "E" using the [DATE +] / [DATE -] keys. (6) In the same manner, set the value to "1" using the [PR +] / [PR -] keys. (7) When completed with all of the above settings, press the [Transmission] key. (8) The code to switch on the convergence circuit is "0FE3". After adjustments, you should transmit this code in the same manner.

NOTE:

Please order to your parts center if you do not have this remote control unit.

Parts number: LP20873-009A (Remote control unit for VCR)

As a result, you can get the screen as shown in bellow figure. Adjust the DEFLECTION circuit in order of the steps indicated by the downward arrows.

NOTE:

When every adjustment of the DEFLECTION circuit has completed, start the adjustment of convergence.

Adjustment

location

sequence

PREPARATION

Without convergence operation

H.SIZE

Overall position & size

Center

Center perimeter

(If center deviated, readjust)

Perimeter

(If center deviated, readjust)

Corner (Final adjust)

R and B only

Crosshatch Completed

(From a collection of squares)

SCREEN TILT

H.POSITION /SIZE (coarse)

RASTER CENTERING

DEFLECTION

V.POSITION / SIZE / LINEARITY

H.POSITION

SIDE PIN

TRAPEZIUM

CONVERGENCE

CONVERGENCE PHASE

OVERALL CONVERGENCE ( LINE / POINT )

(No.YA455)1-35

Page 36

4.7.3.2 PREPARATION

Item

SCREEN TILT adjustment

H. POSITION / H. SIZE (coarse) adjustment

RASTER CENTERING adjustment

Measuring instrument

Remote control unit

Signal generator

Remote control unit

R G B

Test point Adjustment part Description

Conver Service [3. Conver Off]

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

TV-Micro Service [1. Adjust] D005 : H. SIZE D020 : H. CENT

Conver Service [3. Conver Off]

G CENTERING magnet R CENTERING magnet B CENTERING magnet [PROJECTION UNIT]

mechanical center

• Confirm correct FOCUS adjustment. (1) Enter Conver Service [3. Conver Off]. (2) Select crosshatch pattern with [INPUT] key.

(3) Make a green single color.

NOTE :

When making a single color, while adjusting of one CRT, put the cap on other lens.

(4) Temporarily secure the G deflection yoke to the top

of the neck and adjust the tilt of the deflection yoke so that the horizontal line at the center becomes flat. After adjustment, fasten the temporal screw.

(5) Adjust the tilt of the R and B deflection yokes in the

same manner as for G.

NOTE :

Make sure that the adjustment of CRT FOCUS is optimized at the center and at the fringe of the center in turn. If the proper adjustment has not been done, adjust FOCUS VR again.

(1) Receive NTSC circle (or crosshatch) signal. (2) Switch off the convergence circuit. (3) Enter TV-Micro Service [1. Adjust]. (4) Make a green single color.

NOTE :

When making a single color, while adjusting of one CRT, put the cap on other lens.

(5) Select <D005> (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 <D020> (H. CENT) and adjust horizontal

position to make the screen center and signal center same.

(7) Select <D005> and adjust horizontal size to make

screen picture approx. 92% of H-SIZE. (8) Press [MUTING] key to memorize the set value. (9) After adjustment, switch on the convergence circuit.

NOTE :

Refer to the FLOWCHART OF ADJUSTMENT for the way to switch off/on the convergence circuit.

NOTE :

Carry out after finishing adjustment of H. POSITION and H. SIZE. (1) Enter Conver Service [3. Conver Off] and select

crosshatch pattern with [INPUT] key. (2) Adjust G CENTERING magnet to make horizontal

and vertical line center as mechanical center of

screen. (3) Red and blue color too, are reflected by it. (4) Using R CENTERING magnet and B CENTERING

magnet, adjust for the line of the red(L1) and the

blue(L2) to become the position of the left figure.

NOTE :

Vertical center position of the red and blue are the same as green.

R G B

L1 = 40mm L2 = 45mm

1-36 (No.YA455)

Page 37

4.7.3.3 DEFLECTION ADJUSTMENT [2. TV-Micro Service]

Item

V. POSITION / V.SIZE / V.LINEARITY adjustment

Measuring

instrument

Signal generator

Remote

Test point Adjustment part Description

[1. Adjust] D001 : V. SIZE D009 : V. LIN D011 : V. CENT

control unit

no-signal area

H. POSITION adjustment

48"

C 55mm 75mm

Signal generator

56"

[1.Adjust] D020 : H. CENT

Remote control unit

• To memorize every time after finish adjustment on each mode.

(1) Receive NTSC circle pattern signal. (2) Select FULL mode with [ASPECT] key. (3) Switch off the convergence circuit. (4) Enter TV-Micro Service [1. Adjust]. (5) Select <D001> (V. SIZE), <D009> (V. LIN) and

<D011> (V. CENT).

(6) Adjust <D001>, <D009> and <D011> to make A = B

(precision ±2mm), and adjust to make C same value

as table. (7) Press [MUTING] key to memorize the set value. (8) After adjustment, switch on the convergence circuit.

NOTE :

Do not adjust <D007> (V. SCORE), if it is different vertical position after adjust vertical linearity, to adjust vertical position.

NOTE :

Refer to the FLOWCHART OF ADJUSTMENT for the way to switch off/on the convergence circuit..

(1) Receive NTSC circle pattern signal. (2) Select FULL mode with [ASPECT] key. (3) Switch off the convergence circuit. (4) Enter TV-Micro Service [1. Adjust]. (5) Select <D020> (H. CENT). (6) Adjust <D020> to make D = E as shown figure. (7) Press [MUTING] key to memorize the set value. (8) After adjustment, switch on the convergence circuit.

NOTE :

Refer to the FLOWCHART OF ADJUSTMENT for the way to switch off/on the convergence circuit.

H. SIZE adjustment

Signal generator

[1.Adjust] D005 : H. SIZE

Remote control unit

Screen size

(92%)

Picture size

100%

(1) Receive NTSC crosshatch signal. (2) Select FULL mode with [ASPECT] key. (3) Switch off the convergence circuit. (4) Enter TV-Micro Service [1. Adjust]. (5) Select <D005> (H. SIZE). (6) Adjust <D005> to make sure that the vertical screen

size of the picture size is 92%. (7) Press [MUTING] key to memorize the set value. (8) After adjustment, switch on the convergence circuit .

NOTE :

Refer to the FLOWCHART OF ADJUSTMENT for the way to switch off/on the convergence circuit.

(No.YA455)1-37

Page 38

Item

SIDE PIN adjustment

TRAPEZIUM adjustment

Measuring instrument

Signal generator

Remote control unit

Signal generator

Remote control unit

Test point Adjustment part Description

[1.Adjust] D003 : EW D014 : BOT.CORN D016 : TOP.CORN

(1) Receive NTSC crosshatch signal. (2) Select FULL mode with [ASPECT] key. (3) Switch off the convergence circuit. (4) Enter TV-Micro Service [1. Adjust]. (5) Select <D003> (EW), <D014> (BOT.CORN) and

<D016> (TOP.CORN).

(6) Adjust <D003>, <D014> and <D016> to make the

vertical lines at the left and right edges of the screen

Straight

straight. (7) Press [MUTING] key to memorize the set value. (8) After adjustment, switch on the convergence circuit.

NOTE :

After making adjustments, confirm that the horizontal position is properly adjusted. If the horizontal is out of alignment, readjust it. Adjust H. SIZE & SIDE PIN reparably.

NOTE :

Refer to the FLOWCHART OF ADJUSTMENT for the way to switch off/on the convergence circuit.

[1.Adjust] D012 : EW.TRAP

(1) Receive NTSC crosshatch signal. (2) Select FULL mode with [ASPECT] key. (3) Switch off the convergence circuit. (4) Enter TV-Micro Service [1. Adjust]. (5) Select <D012> (EW.TRAP). (6) Adjust <D012> to bring the vertical lines at the right

and left edges of the screen parallel.

Parallel

(7) After adjustment, switch on the convergence circuit. (8) Press [MUTING] key to memorize the set value.

NOTE :

After making adjustments, confirm that the horizontal position is properly adjusted. If the horizontal is out of alignment, readjust it. Adjust H. SIZE & SIDE PIN reparably.

NOTE :

Refer to the FLOWCHART OF ADJUSTMENT for the way to switch off/on the convergence circuit.

1-38 (No.YA455)

Page 39

4.7.3.4 CONVERGENCE ADJUSTMENT [3. Conver Service]

Item

CONVERGENCE PHASE check

Measuring

instrument

Remote control unit

Test point Adjustment part Description

[1.Coarse Adjust] CPA02 : TPOPH CPA03 : TPOPV LINE CPA04 : TPOPV OFST CPA05 : FINEP CPA06 : STARTLIN A CPA07 : STARTLIN B CPA08 :

COARS PHAS CPA09 : COARS OFST CPA10 : V1OFSTA CPA11 : V1OFSTB

OVERALL CONVERGENCE (LINE) check

Remote control unit

[ 1.Coarse Adjust ] CPA01 : FINE OFF CCA01 : C H CENT CCA02 : C H SIZE CCA03 : C H LIN CCA04 : C H SKEW CCA05 : C EW PIN CCA06 : C H BOW CCA07 : C V CENT CCA08 : C V SKEW CCA09 : C V SIZE CCA10 : C V LIN CCA11 : C V KEY CCA12 : C TB PIN

OVERALL CONVERGENCE

Remote control unit

[ 2. Fine Adjust ] NOTE:

(POINT) adjustment

Cursor Point of adjustment

(1) Enter Conver Service [1. Coarse Adjust]. (2) Select <CPA> item with [INPUT] key. (3) Check and set data that <CPA02> to <CPA11> are

same as the initial setting values.

(4) Press [MUTING] key to memorize the set values.

(1) Enter Conver Service [1. Coarse Adjust]. (2) Select <CPA01> (FINE OFF). (3) Change the data 0 to1. (Clear the fine adjustment

data)

(4) Select <CCA> item with [INPUT] key. Then a green

crosshatch pattern for adjustment will be displayed on the screen.

(5) Check and set data <CCA01> to <CCA12> are

same as the initial setting values.

(6) Press [SLEEP TIMER] key to change the adjusting

color to red and blue.

(7) In the same manner, check and set data for red and

blue patterns. (8) Press [MUTING] key to memorize the set values. (9) Select <CPA01>.

(10) Change the <CPA01> 1 to 0. (11) Press [MUTING] key to memorize the set values.

Perform this adjustment after performing OVERALL CONVERGENCE (LINE) check. (1) Enter Conver Service [2. Fine Adjust]. Then appear

green crosshatch pattern for adjustment. (2) Press [ 2 ] / [ 4 ] / [ 5 ] / [ 6 ] / [ 8 ] keys respectively,

move the cursor to the adjusting point. (3) Press [CH+] / [CH-] / [VOL+] / [VOL-] keys, adjust the

position of the adjusting point. (4) Press [SLEEP TIMER] key to select the red and blue

crosshatch patterns, respectively, and make

convergence adjustments so that they align with the

adjusting points of the green crosshatch pattern

(reference color). (5) Press [OK] key to change the display colors to 3

colors from 2 colors (adjusting color + green) and

make sure that the convergence has been aligned

with each other. (6) Press [MUTING] key to memorize the set values.

(No.YA455)1-39

Page 40

4.7.4 VIDEO ADJUSTMENT [2. TV-Micro Service]

Item

RGB CUTOFF adjustment

WHITE BALANCE (LOW LIGHT) adjustment

Measuring instrument

Signal generator

Oscilloscope

Remote control unit

Signal generator

Remote control unit

Test point Adjustment part Description

TP-R [R CRT SOCKET PWB] TP-G [G CRT SOCKET PWB] TP-B [B CRT SOCKET PWB] TP-E (GND)

[1. Adjust] S001 : BRIGHT S011 : R CUTOFF S012 : G CUTOFF S013 : B CUTOFF

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

[1.Adjust] S022: CB OFS S023: CR OFS

[2.White Blance]

(1) Receive NTSC signal (include 3% black). (2) Select STANDARD mode with [VIDEO STATUS]

key. (3) Select FULL mode with [ASPECT] key. (4) Set the COLOR TEMP is LOW mode. (5) Connect the oscilloscope to TP-G. (6) Enter TV-Micro Service [1. Adjust]. (7) Select <S001> (BRIGHT). (8) Set <S001> to 031. (9) Select <S012> (G CUTOFF).

(10) Adjust <S012> so that the 3% signal portion and the

100% signal portion of both sides may become the

180V.

(11) Press [MUTING] key to memorize the set value. (12) Connect the oscilloscope to TP-R and <S011> (R

CUTOFF) adjust same manner as for (6.) to (11.)

above.

(13) Connect the oscilloscope to TP-B and <S013> (B

CUTOFF) adjust same manner as for (6.) to (11.)

above.

(14) Adjust SCREEN VR for RGB respectively, so that

the black (3%) becomes faintly whitish.

NOTE :

If it is difficult to adjust the SCREEN precisely, adjust the SCREEN VR for one of 3 colors while masking other 2 colors.

(1) Receive the NTSC black and white signal (color off). (2) Select STANDARD mode with [VIDEO STATUS]

key. (3) Set the COLOR TEMP is LOW mode. (4) Enter TV-Micro Service [1. Adjust]. (5) Set the initial setting value of <S022> (CB OFS)

and <S023> (CR OFS). (6) Enter TV-Micro Service [2. White Balance]. (7) Adjust BRIGHT to make a little bright for +3% black

level by [VOL+] / [VOL-] key. (8) Press the [MUTING] key to memorize the set value.

NOTE :

When it is insufficient in the adjustment, adjust <S022> (CB OFS) and <S023> (CR OFS) closely to make white for +3% black level.

1-40 (No.YA455)

Page 41

Item

WHITE BALANCE (HIGH LIGHT) adjustment

REMOTE CONTROL UNIT

Measuring

instrument

Signal generator

Remote control unit

Test point Adjustment part Description

[1.Adjust] S014: R DRIVE S015: B DRIVE

• WHITE BALANCE(LOW LIGHT) adjustment should be finished.

(1) Receive the NTSC black and white signal (color off). (2) Select STANDARD mode with [VIDEO STATUS]

[2.White Blance]

key. (3) Set the COLOR TEMP is LOW mode. (4) Enter TV-Micro Service [1. Adjust]. (5) Set the initial setting value of <S014> (R DRIVE) and

B DRIVER DRIVE

<S015> (B DRIVE). (6) Enter TV-Micro Service [2. White Balance]. (7) Adjust the screen until it becomes white by using the

[2], [3], [5] and [6] keys. (8) Press the [MUTING] key to memorize the set value.

TUNE

SUB BRIGHT adjustment

SUB CONTRAST adjustment (1)

SUB CONTRAST adjustment (2)

Remote control unit

Signal generator

Oscilloscope

Remote control unit

RETURN+

TP-G [G CRT SOCKET PWB] TP-E (GND)

[1.Adjust] S001: BRIGHT

[1.Adjust] S002 : PICTURE

(1) Receive any broadcast. (2) Select STANDARD mode with [VIDEO STATUS] key. (3) Set the COLOR TEMP is LOW mode. (4) Enter TV-Micro Service [1. Adjust]. (5) Select <S001> (BRIGHT). (6) Set the initial setting value. (7) If the brightness is not the best with the initial setting

value, make fine adjustment until you get the best

brightness. (8) Press [MUTING] key to memorize the set value.

[ Method of adjustment without measuring instrument ]

(1) Receive any broadcast. (2) Select STANDARD mode with [VIDEO STATUS]

key. (3) Set the COLOR TEMP is LOW mode. (4) Enter TV-Micro Service [1. Adjust]. (5) Select <S002> (PICTURE). (6) Set the initial setting value. (7) If the contrast is not the best with the initial setting

value, make fine adjustment of the <S002> until you

get the optimum contrast. (8) Press [MUTING] key to memorize the set value.

[ Method of adjustment with measuring instrument ]

(1) Receive NTSC gray scale signal. (2) Select STANDARD mode with [VIDEO STATUS] key. (3) Select FULL mode with [ASPECT] key. (4) Set the COLOR TEMP is LOW mode. (5) Connect the oscilloscope to TP-G. (6) Enter TV-Micro Service [1. Adjust]. (7) Select <S002> (PICTURE). (8) Adjust <S002> so that the 0% signal portion and the

100% signal portion of both sides may become 59V. (9) Press [MUTING] key to memorize the set value.

(No.YA455)1-41

Page 42

Item

SUB COLOR / SUB TINT adjustment (1)

SUB COLOR / SUB TINT adjustment (2)

Measuring instrument

Remote control unit

Signal generator

Oscilloscope

Remote control unit

Test point Adjustment part Description

[1.Adjust] S003 : COLOR S004 : TINT

[ Method of adjustment without measuring instrument ]

(1) Receive any broadcast. (2) Select STANDARD mode with [VIDEO STATUS]

key. (3) Enter TV-Micro Service [1. Adjust]. (4) Select <S003> (COLOR) and <S004> (TINT). (5) Set the initial setting value. (6) If the color or tint is not the best with the initial setting

values, make fine adjustment until you get the best

color or the best tint. (7) Press [MUTING] key to memorize the set value.

TP-R [R CRT SOCKET PWB] TP-E (GND)

[1.Adjust] S003 : COLOR S004 : TINT

[ Method of adjustment with measuring instrument ]

(1) Receive NTSC color bar signal (include 75% white). (2) Select STANDARD mode with [VIDEO STATUS]

key. (3) Connect the oscilloscope to TP-R. (4) Enter TV-Micro Service [1. Adjust]. (5) Select <S003> (COLOR) and <S004> (TINT). (6) Adjust <S003> and <S004> to be following setting

value. (Refer to the table) (7) Press [MUTING] key to memorize the set value. (8) Confirm that LOW-LIGHT is not different after

adjusting. If it is green or magenta, to adjust LOW-

LIGHT again. If adjust again, to set offset value

again.

(-)

YR(W-Y) (W-R)

Setting item

Signal

NTSC +11 0

Setting value [V]

STANDARD

S003(W-R)

(+)

S004 (W-Y)

1-42 (No.YA455)

Page 43

4.7.5 MTS ADJUSTMENT [1. Digital Service]

Item

MTS INPUT LEVEL

Measuring

instrument

Remote control unit

Test point Adjustment part Description

adjustment

MTS SEPARATION adjustment

TV audio multiplex signal

R OUT L OUT [AUDIO OUT]

generator

Oscilloscope

Remote control unit

L-Channel signal waveform

1 cycle

R-Channel crosstalk portion

Minimum

Input the stereo R signal (3kHz) and change

[1.Adjust] A001: IN LEVEL

[1.Adjust] A002: LOW SEP A003: HIGH SEP

(1) Receiv any broadcast. (2) Enter Digital Service [1. Adjust]. (3) Select the <A001> (IN LEVEL). (4) Set the intal setting value of the <A001>. (5) Press the [MUTING] key to memorize the set value.

(1) Input the stereo L signal (300Hz) from the TV audio

multiplex signal generator to the antenna terminal.

(2) Connect an oscilloscope to L OUT pin of the AUDIO

OUT, and display one cycle portion of the 300Hz signal.

(3) Change the connection of the oscilloscope to R OUT

pin of the AUDIO OUT, and enlarge the voltage axis. (4) Enter Digital Service [1. Adjust]. (5) Select the <A002> (LOW SEP). (6) Set the initial setting value of the <A002> (LOW

SEP). (7) Adjust the <A002> so that the stroke element of the

300Hz signal will become minimum. (8) Press the [MUTING] key to memorize the set value. (9) Input the stereo R signal (3kHz) and change the

connection of the oscilloscope to L OUT pin of the

AUDIO OUT.

(10) Similarly adjust <A003> (HIGH SEP). (11) Press the [MUTING] key to memorize the set value.

(No.YA455)1-43

Page 44

SECTION 5

TROUBLESHOOTING

5.1 SELF CHECK FEATURE

5.1.1 OUTLINE

This unit comes with the "Self check" feature, which checks the operational state of the circuit and displays/saves it during failure. Diagnosis is performed when power is turned on, and information input to the main microcomputer is monitored at all time. Failure detection is based on input state of I various control lines connected to the main microcomputer.

5.1.2 HOW TO ENTER THE SELF CHECK MODE

(1) Set to "0 minutes" using the [SLEEP TIMER] key. (2) While "0 minutes" is displayed, press the [VIDEO STATUS]

key and [DISPLAY] key simultaneously, then enter the SERVICE MODE.

(3) Press the [4] key (4.Diagnostics) in the SERVICE MENU

SCREEN. (Fig.1)

(4) Press the [3] key (3.Self check) in the DIAGNOSTICS

MODE screen. (Fig.2) (5) The SELF CHECK MODE screen is displayed. (Fig.3) (6) Press the [VOL+] / [VOL-] key to switch between the first

page and the second page.

NOTE:

When a number key other than the [4] key is pressed in the SERVICE MENU SCREEN, the other relevant screen may be displayed. This is not used in the SELF CHECK MODE. Press the

[BACK] key to return to the SERVICE MENU SCREEN.

5.1.3 HOW TO EXIT THE SELF CHECK MODE

TO SAVE FAILURE HISTORY:

Turn off the power by unplugging the AC power cord plug when in the SELF CHECK MODE.

TO CLEAR (RESET) FAILURE HISTORY:

Turn off the power by pressing the key on the remote control unit when in the SELF CHECK MODE.

C bus and the

Press [4] key

Press [3] key

SELF CHECK MODE SCREEN (Page 1)

Item

CHECK

Normality=OK

Abnormality=NG

Not used= ---

SERVICE

Service Menu

1.Digital Service

2.TV-Micro Service

3.Conver Service

4.Diagnostics

MENU SCREEN

Fig.1

Diagnostic MENU SCREEN

Diagnostic

1.I2C Bus Stop

2.Status Monitor

3.Self Check

4.Version

5.Save Config data to SD card

6.Load Config data

7.Boot from NFS

8.Debug Log

Fig.2

Self Check 1/2 X-RAY OK OCP OK LOB OK TIM OK PHOTO OK HostLink OK FAN ---

<> Previous/Next Page [BACK]Back [MENU]Exit

Press [VOL+] / [VOL-] key

5.1.4 FAILURE HISTORY

Failure history can be counted up to 9 times for each item. When the number exceeds 9, display will remain as 9. Failure history will be stored in the memory unless it has been deleted.

5.1.5 POINTS TO NOTE WHEN USING THE SELF CHECK FEATURE

In addition to circuit failures (abnormal operation), the following cases may also be diagnosed as "Abnormal" and displayed and counted as "NG".

(1) Temporary defective transmissions across circuits due to

pulse interruptions

(2) Misalignment in the on/off timing of power for I

C bus

(VCC) when turning on/off the main power. Diagnosis may be impeded if a large number of items are displayed as "NG". As such, start Self check check only after 3 seconds in the case of receivers and 5 seconds in the case of panels upon turning on the power. If recurrences are expected, ensure to clear (reset) the failure history and record the new diagnostic reults.

1-44 (No.YA455)

SELF CHECK MODE SCREEN (Page 2)

Item

CHECK

Normality=OK

Abnormality=NG

Not used= ---

Self Check 2/2 MTS OK RGB/DEF OK TONE OK AVSW OK A-EEPROM OK CompSW NG(4) ADC NG(8) TUNER OK AudioADC OK DigitalIN ---

<> Previous/Next Page [BACK]Back [MENU]Exit

Fig.3

Page 45

5.1.6 DETAILS

Self check is performed for the following items:

5.1.6.1 PAGE 1 OF SCREEN

Detection item Display Detection content

X-ray protection X-RAY Operation of X-ray protection circuit.

[MAIN PWB]

Q710

B1 over-current protection

Low bias line short protection

Timer (clock) TIM The power frequency is changed as

Photo ditect PHOTO Operation of the photo sensor. DIGI_PHOT At about 3 seconds after the power is

DTVM and TVM communication

Fan lock FAN Not used. --- ---

OCP B1 over-current is detected.

[DEF & CONVERGENCE OUT PWB]

Q971

LOB Operation of low B short protection circuit.

5V: Q961 9V: Q962 [MAIN PWB]

follows: 50Hz → 60Hz / 60Hz→50Hz.

[MAIN PWB]

IC701

Hostlink Communication error between the

digital TV microcomputer and the TV microcomputer is detected.

[MAIN PWB]

IC701

Diagnosis

signal (line)

X_RAY At about 3 seconds after the power is

turned on, the self-check function starts. If NG is detected during 200ms, the POWER LED is blinked.

OCP At about 3 seconds after the power is

turned on, the self-check function starts. If NG is detected during 200ms, the power is turned off automatically.

LOB_PRO At about 3 seconds after the power is

turned on, the self-check function starts. If NG is detected during 400ms, the power is turned off automatically.

AC_IN Detection starts 3 seconds after the

power is turned on. Periodically check the power frequency by counting the AC pulse and monitor whether or not the frequency is changed.

turned on, the self-check function starts. If NG is detected during 400ms, irregularly is counted.

SDA Check communication errors by counting

the number of reset exception handling.

Detection timing

5.1.6.2 PAGE 2 OF SCREEN

Detection item Display Detection content

US audio multiplexing decoder

Tone/volume control TONE Same as above. SDA Same as above.

AV select switch AVSW Same as above. SDA Same as above.

Component signal select switch

A-D converter for component signal

Tuner TUNER Same as above. SDA Same as above.

A-D converter for audio

Digital input DigitalIN Not used. --- ---

RGB/Def process RGB/DEF Confirmation of reply of ACK signal

Memory A-EEPROM Confirmation of reply of ACK signal

MTS Confirmation of reply of ACK signal

which uses I2C communication.

CompSW Same as above. SDA Same as above.

ADC Same as above. SDA Same as above.

Audio ADC Same as above. SDA Same as above.

which uses I2C communication.

[MAIN PWB]

IC301

which uses I2C communication.

[MAIN PWB]

IC702

Diagnosis

signal (line)

SDA If it checks whenever I2C communication

is performed and no reply of ACK signal an error will be counted.

SDA If it checks whenever I2C communication

is performed and no reply of ACK signal an error will be counted.

SDA Same as above.

Detection timing

(No.YA455)1-45

Page 46

5.1.7 DISPLAY METHOD WHEN RASTER IS NOT AVAILABLE

The self check results are shown on the following POWER LED display. When the raster is not displayed, each failure is shown by turning LED on and off at the specified intervals.

• For B1 over-current protection and Low B short protection, the power of the TV is turned off when NG is detected. Immediately after

the power is turned off, the POWER LED will be turning on and off. When the power is turned off, you cannot turn the power on again until the AC plug is taken out and put in again.

Item POWER LED ON / OFF intervals

X-ray protection Turning on and off at 0.1-second intervals

B1 over-current protection Turning on and off at 1-second intervals

Low B short protection Turning on and off at 2-second intervals

1-46 (No.YA455)

Page 47

Victor Company of Japan, Limited Display Category 12, 3-chome, Moriya-cho, Kanagawa-ku, Yokohama-city, Kanagawa-prefecture, 221-8528, Japan

(No.YA455)

Printed in Japan

VPT

JVC AV-48P777 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1.1 SAFETY PRECAUTIONS

1.2 INSTALLATION

2.1 SYSTEM SETTEING

2.2 FEATURES

2.3 DIFFERENCE LIST

2.4 TECHNICAL INFORMATION

2.5 MAIN PARTS LOCATION

2.6 SCREEN HANDLING CAUTIONS

2.7 PROJECTION UNIT REPLACEMENT

3.1 DISASSEMBLY PROCEDURE

3.2 MEMORY IC REPLACEMENT

3.3 REPLACEMENT OF CHIP COMPONENT

4.1 ADJUSTMENT PREPARATION

4.2 MEASURING INSTRUMENT AND FIXTURES

4.3 ADJUSTMENT FLOWCHART

4.4 BASIC OPERATION OF SERVICE MENU

4.5 SERVICE MODE

4.6 INITIAL SETTING VALUE OF SERVICE MODE

4.7 ADJUSTMENT PROCEDURE

5.1 SELF CHECK FEATURE