TOSHIBA 43PH46P User Manual [fr]

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FILE NO. 030-200407

SERVICE MANUAL

Projection Television

WH4 Chassis

43PH46P 50PH46P

Published in Japan, Jun. 2004 (YC)

TABLE OF CONTENTS

CHAPTER 1 GENERAL ADJUSTMENTS

SAFETY INSTRUCTIONS ........................................................................................................................................ 3

CRT ASSEMBLY REPLACEMENT AND MOUNTING ............................................................................................. 4

PICTURE TUBE COMPONENTS ADJUSTMENT.................................................................................................... 6

SERVICE POSITION ................................................................................................................................................ 9

SERVICE MODE .................................................................................................................................................... 10

DESIGN MODE ...................................................................................................................................................... 13

ELECTRICAL ADJUSTMENT ................................................................................................................................ 14

CONVERGENCE ADJUSTMENT .......................................................................................................................... 21

SCREEN AND MIRROR ALIGNMENTS ................................................................................................................ 28

CIRCUIT CHECKS ................................................................................................................................................. 29

CHAPTER 2 SPECIFIC INFORMATIONS

SETTING & ADJUSTING DATA .............................................................................................................................. 30

LOCATION OF CONTROLS ...................................................................................................................................31

MECHANICAL DISASSEMBLY .............................................................................................................................. 33

CHASSIS AND CABINET REPLACEMENT PARTS LIST ......................................................................................34

PC BOARDS BOTTOM VIEW................................................................................................................................. 52

TERMINAL VIEW OF TRANSISTORS ................................................................................................................... 62

CIRCUIT BLOCK DIAGRAM .................................................................................................................................. 64

SPECIFICATIONS .............................................................................................................................................. END

APPENDIX:

CIRCUIT DIAGRAM

CHAPTER 1 GENERAL ADJUSTMENTS

SAFETY INSTRUCTIONS

WARNING: BEFORE SERVICING THIS CHASSIS, READ THE “X-RAY RADIATION PRECAUTION”, “SAFETY PRECAU-

TION” AND “PRODUCT SAFETY NOTICE” INSTRUCTIONS BELOW.

X-RAY RADIATION PRECAUTION

1. Excessive high voltage can produce potentially hazardous X-RAY RADIATION. To avoid such hazards, the high voltage must not be above the specified limit. The nominal value of the high voltage of this receiver is (A) kV at zero beam current (minimum brightness) under a (C) V AC power source. The high voltage must not, under any circumstances, exceed (B) kV.

Refer to table-1 for high voltage (A), (B) & AC voltage (C). (See SETTING & ADJUSTING DATA on page 30)

Each time a receiver requires servicing, the high voltage should be checked following the HIGH VOLTAGE CHECK procedure in this manual. It is recommended that the reading of the high voltage be recorded as a part of the service record. It is important to use an accurate and reliable high voltage meter.

SAFETY PRECAUTION

WARNING : Service should not be attempted by anyone unfamiliar with the necessary precautions on this receiver. The following are the necessary precautions to be observed before servicing this chassis.

1. An isolation transformer should be connected in the power line between the receiver and the AC line before any service is performed on the receiver.

2. Always discharge the picture tube anode to the CRT conductive coating before handling the picture tube. The picture tube is highly evacuated and if broken, glass fragments will be violently expelled. Use shatter proof goggles and keep picture tube away from the unprotected body while handling.

3. When replacing a chassis in the cabinet, always be certain that all the protective devices are put back in place, such as; nonmetallic control knobs, insulating covers, shields, isolation resistor-capacitor network etc.

2. The only source of X-RAY RADIATION in this TV receiver is the picture tube. For continued X-RAY RADIATION protection, the replacement tube must be exactly the same type tube as specified in the parts list.

3. Some part in this receiver have special safety-related characteristics for X-RAY RADIATION protection. For continued safety, parts replacement should be undertaken only after referring to the PRODUCT SAFETY NOTICE below.

PRODUCT SAFETY NOTICE

Many electrical and mechanical parts in this chassis have special safety-related characteristics. These characteristics are often passed unnoticed by a visual inspection and the protection afforded by them cannot necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in this manual and its supplements; electrical components having such features are identified by the international hazard symbols on the schematic diagram and the parts list. Before replacing any of these components, read the parts list in this manual carefully. The use of substitute replacement parts which do not have the same safety characteristics as specified in the parts list may create shock, fire, X-ray radiation or other hazards.

CRT ASSEMBLY REPLACEMENT AND MOUNTING

CAUTION : DO NOT LOOSEN THE HEX HEAD BOLTS WITH SPRINGS (12 PCS), BECAUSE THOSE ARE FOR

SEALING OF CRT COOLANT.

8 o'clock

Lens Assembly

RGB

4 o'clock

Attention Serviceman

The Hex Head Bolts with Springs. (see sketch) used on CRT assembly, are “NOT”

Adjustment Screws DO NOT LOOSEN-FLUID LEAKAGE WILL OCCUR.

4 Screws

CRT Assembly

CRT Anode Cap Assembly

S.V.M. Coil

CRT DRIVE Board

CRT Mounting

Deflection Yoke and Conver Yoke

Lens and Neck Components View

TO REMOVE CRT (Same procedure for R, G, B)

1. Remove CRT DRIVE Board, S. V. M. COIL and DEF. YOKE from CRT.

2. Remove Lens Assembly.

3. Detach CRT Anode Cap from CRT.

4. Remove CRT Assembly from CRT Mounting.

CRT REPLACEMENT (Same procedure for R, G, B) Reverse the removal procedures except the followings.

1. Anode Cable should be replaced with new one. See "SERVICING PRECAUTIONS" shown below.

2. Install silicon (T461B) to the CRT, replace the Anode cable and put enough silicon again on around the Anode Cap as illustrated.

CAUTION: Align the Anode cable as illustrated on page

ADJUSTING PROCEDURE IN REPLACING CRT

1. R.G.B. CUTOFF (SCREEN VR) ADJUSTMENT (page 6.)

2. R.G.B. FOCUS ADJUSTMENT (page 6.)

3. PICTURE TILT ADJUSTMENT (page 7.)

4. USER CONVERGENCE CENTER CHECK (Refer to owner's manual.)

5. CENTERING ADJUSTMENT (page 7.)

6. CONVERGENCE ADJUSTMENT (page 21.)

WHITE BALANCE ADJUSTMENT (page 14.)

Adjustments are complete.

Anode Cap

Silicon (On shaded area) TSE3843W #23960136

2 ~ 5 mm

SERVICING PRECAUTIONS

■ Do not use a magnetized screw driver for screws of Deflection Yoke and Velocity Modulation Coil to avoid magnetization of electron gun. Magnetization of electron gun will degrade basic function and result in unbalance of right and left shift of user static convergence, and result in no variable quantity.

Screw for D.Y

15 ~ 25 mm

■ When replacing the anode cap assembly (CRT) or anode lead assembly (F.B.T.), remove the anode lead holder from old one and attach the holder again to new anode lead.

■ Check the point of anode lead in a straight line, if it is winding, please revise it.

Anode lead holder

Screw for SVM coi

WARNING: BEFORE SERVICING THIS CHASSIS, READ THE "X-RAY RADIATION PRECAUTION", "SAFETY PRE-

CAUTION" AND "PRODUCT SAFETY NOTICE" ON PAGE 3 OF THIS MANUAL.

PICTURE TUBE COMPONENTS ADJUSTMENT

ADJUSTING PROCEDURE IN REPLACING CRT

Cutoff

Lens focus

Electrical focus

Yoke horizontal

DESCRIPTION OF NECK COMPONENTS

S.V.M. COIL

1 Deflection yoke and convergence yoke.

The position on the neck is required most front (CRT funnel side) and the screw is fastened after rotating yoke adjusting picture tilt.

User convergence center check

Centering (PAL)

Convergence adjustment (PAL/NTSC)

White balance

Sub bright adjustment

End

2 Centering magnet

After adjusting picture tilt, picture position is finally fixed by this magnet. In order to get maximum margin of user convergence control for center of screen, this magnet have to be used for center convergence adjustment.

RGB FOCUS ADJUSTMENT

1. Call-up the adjustment mode (see page 10)

2. Press a button on the remote controller in order to display the internally-generated cross-hatch (See TEST SIGNAL SELECTION on page 11.)

3. Expose only RED by covering the GREEN and BLUE lenses with caps.

4. Loosen the RED lens fixing screws (refer to Fig. a), and adjust the RED lens focus to obtain the sharpest point while observing the middle and peripheral sections of the screen.

Fig. a

5. Use the focus VR of “R” of the focus pack in order to adjust the electric focus in the middle and peripheral sections of the screen to its sharpest level.

6. Check the RED focus of the whole screen and if necessary repeat steps 4 and 5.

7. Fix the RED lens by tightening its fixing screws.

8. Expose only GREEN by covering the RED and BLUE lenses with caps.

9. Display the internally-generated cross-hatch signal.

10. Adjust the GREEN lens focus on the left border of the screen to its sharpest level, then check the focus on the right border, and if it is at its sharpest level, fix it in that position by tightening the lens screws.

PREPARATION

Operate the receiver for at least 5 minutes.

R, G, B CUTOFF (SCREEN VR) ADJUSTMENT

1. Adjust before replace the screen assembly.

2. Set user control to reset position. CONTRAST → Max

(

BRIGHTNESS, COLOR, TINT → Center.

3. Call up the adjustment mode display, then select the

item RCUT.

4. Adjust the data of items RCUT, GCUT, and BCUT to

"40H".

5. Press the

6. Gradually rotate R, G and B screen volume of FOCUS

PAC clockwise or counterclockwise until the raster appears slightly on the CRT through the each lens, and leave them. (Lookin to the lens in order to check the raster.)

7. Press the

Picture)

button on Remote. (Y-MUTE : ON)

button on Remote. (Return to Normal

(1) If the horizontal line toward the right border is red-

flared, turn the lens screw slightly right in order to balance it with the left border. (After adjustment, the left border tends to be slightly green-flared, and the right border tends to be slightly red-flared.)

(2) If the horizontal line toward the right border is green-

)

Note: The aim of the above-described adjustment procedure

flared, turn the lens screw slightly left in order to balance it with the left border. (After adjustment, the left border tends to be slightly red-flared, and the right border tends to be slightly green-flared.)

for the Green lens focus is to obtain the best lens focus after 2 - 3 hours of warming up taking into account the focus drift; it applies if the warming up time before the adjustment is less than 30 minutes. (The horizontal line in the screen middle section tends to be slightly redflared.)

In case of warming up of more than 2 hours under a condition that the large anode current is running through the projection tube so that for example the all-white pattern appears, adjust to obtain the sharpest focus while observing the whole screen like in the RED case.

11. Press a button on the remote controller in order to display the internally-generated black cross-hatch. (See TEST SIGNAL SELECTION on page 11.)

12. Use the focus VR of “G” of the focus pack in order to adjust the electric focus in the middle section of the screen to its sharpest level.

Note: Keep in mind that only the BLUE electric focus is ad-

justed with the black cross-hatch.

20. Check the BLUE focus of the whole screen and if necessary repeat steps 17 and 19.

21. Fix the BLUE lens by tightening its fixing screws.

TILT ADJUSTMENT

Rotate R, G, B deflection yoke so that picture becomes horizon, then fasten screw.

CENTERING ADJUSTMENT

1. Stretch a thread between two center of screen edge (top and bottom, left and right).

Note: Normally the most clearly visible point of the scanning

line is the sharpest point of the Green focus, however as the characteristics vary depending on the projection tube, the sharpest focus points of the vertical and horizontal lines may not match each other, thus when you turn the focus VR, if the picture tends to be tremendously unstable (rolls horizontally or vertically), adjust the balance of the vertical and horizontal lines to its best position.

13. Check the GREEN focus of the whole screen and if necessary repeat steps 10 and 11.

14. Fix the GREEN lens by tightening up its fixing screws.

15. Expose only BLUE by covering the RED and GREEN lenses with caps.

16. Press a button on the remote controller in order to display the internally-generated cross-hatch (See TEST SIGNAL SELECTION on page 11.)

17. Loosen the BLUE lens fixing screws (refer to Fig. a), and adjust the BLUE lens focus while observing the middle and peripheral screen sections.

18. Press a button on the remote controller in order to display the internally-generated black cross-hatch (See TEST SIGNAL SELECTION on page 11.)

19. Use the focus VR of “B” of the focus pack in order to adjust the focus in the middle section of the screen to its sharpest level. (The point of the Blue focus becomes sharpest when the brightness level of BLUE is lowest, the cross-hatch is clearly visible.)

2. Select the adjustment mode. (See page 10.)

3. Press a button on the Remote Control to display the black cross-hatch.

4. Adjust G centering magnet so that the cross-hatch pattern center comes to screen center.

5. Perform HEIGHT adjustment . (See page 14.)

6. Perform WIDTH adjustment. (See page 14.)

7. Check whole quality of green line.

8. Adjust R, B centering magnet so that the cross-hatch pattern center comes to screen center.

LOCATION OF SCREEN AND FOCUS VR'S

To remove the Speaker grille and Front panel.

Speaker grille

RGB

SCREEN VR's

FOCUS VR's

REPLACEMENT OF HIGH VOLTAGE CABLE

ANODE LEAD

RUBBER BOOT

LEAD HOLDER

Fig. a

Z450 TPA5007

1. When replacing Anode Lead or Anode Cap with new one, remove Lead Holder from old lead as shown in figure below, and put it on new lead. Do not throw away Lead Holder.

NOTE : THE LEAD HOLDER IS ATTACHED TO

TPA5011AH (Z450), BUT IS NOT ATTACHED TO ANODE LEAD AND ANODE CAP. RUBBER BOOT IS ATTACHED TO ANODE AND LEAD ANODE CAP.

2. Detaching Lead Holder

OLD ANODE LEAD

ANODE CAP

LOCK

RUBBER BOOT

LEAD HOLDER

Fig. b

Cut here rubber boot and lead together to detach Lead Holder.

WARNING

CAUTION" AND "PRODUCT SAFETY NOTICE" ON PAGE 3 OF THIS MANUAL.

: BEFORE SERVICING THIS CHASSIS, READ THE "X-RAY RADIATION PRECAUTION", "SAFETY PRE-

SERVICE POSITION

In order to assure the performance, processed wires shall be replaced after the repair work. Work procedures are as follows:

1. Remove the back board.

2. Remove lead wires.

3. Draw out the chassis.

4. Rest the chassis against the back cabinet, chassis as shown bellow.

After repair work finished, replace it in the opposite procedure.

1. ENTERING TO SERVICE MODE

1) Press o button once on Remote Control.

SERVICE MODE

2) Press o button again to keep pressing.

3) While pressing the o button, press MENU button on TV set.

or Sound Mute

2. DISPLAYING THE ADJUSTMENT MENU

1) Press MENU button on TV.

Service mode

Press

Adjustment mode

Item

Data

3. KEY FUNCTION IN THE SERVICE MODE

The following key entry during display of adjustment menu provides special functions.

Screen adjustment mode ON/OFF: -/-- (

) button (on Remote) Test signal selection : a button (on Remote) Selection of the adjustment items : Channel s/t (on TV or Remote) Change of the data value : Volume ; +/– (on TV or Remote) Adjustment menu mode ON/OFF : MENU button (on TV) Initialization of the memory (QA02) : CALL + Channel button on TV (s) Reset the count of operating protect

circuit to “00”: CALL + Channel button on TV (t) “RCUT” selection : 1 button “GCUT” selection : 2 button “BCUT” selection : 3 button “SCNT” selection : 4 button “COLP” selection : 5 button “TNTC” selection : 6 button Convergence adj : YELLOW button Self diagnostic display ON/OFF : 9 button

Color thickness correction note: Displayed differently as shown below, de-

pending on the setting of the receiving color system. COLP (PAL) COLC (NTSC) COLS (SECAM)

Item

Data

(Service mode display)

CAUTION : Never try to perform initialization unless you have changed the memory IC.

4. SELECTING THE ADJUSTING ITEMS

1)Every pressing of CHANNEL button in the service mode changes the adjustment items in the order of table-2.

( button for reverse order)

Refer to table-2 for preset data of adjustment mode. (See SETTING & ADJUSTING DATA on page 30)

5. ADJUSTING THE DATA

1) Pressing of VOLUME +/– button will change the value of data in the range from 00H to FFH. The variable range

depends on the adjusting item.

6. EXIT FROM SERVICE MODE

1) Pressing POWER button to turn off the TV once.

INITIALIZATION OF MEMORY DATA OF QA02

After replacing QA02, the following initialization is required.

1. Enter the service mode, then select any register item.

2. Press and hold the CALL button on the Remote, then press the CHANNEL button on the TV. The initialization of QA02 has been complated.

3. Check the picture carefully. If necessary, adjust any adjustment item above. Perform “Auto tune” on the owner’s manual.

CAUTION: Never attempt to initialize the data unless QA02 has been replaced.

8. SELF DIAGNOSTIC FUNCTION

1) Press “9” button on Remote Control during display of adjustment menu in the service mode. The diagnosis will begin to check if interface among IC’s are executed properly.

2) During diagnosis, the following displays are shown.

Indicated color of mode now selected : Green and Red

2300****

TIME : 000000

POWER : 0

BUS BUS CONT : OK BLOCK : UV V1 V2 V3 V4

: OK

:00

Indicated color of other modes : Black

Green : Normal Red : The microcomputer operates to provide judgement

of no video signal. The red color is still indicated though the signal is input, failure may exist in input signal line including QV01.

NOTE: (1) In case that "on timer" indicator is blinking with

interval of 0.5 seconds; it means protecting circuit (Current limiter) is operating, and circuit components may possibly be damaged. Check related components.

(2) In case that "on timer" indicator is blinking with

interval of 1 second; Protecting circuit does

Part number of microcomputer (QA01)

Total hour of turn the TV on. (Unit: H)

Operation number of protecting circuit ----“00” is nor-

not operate, but a part of Bus line does not operate normally. Check Bus line.

mal. When indication is other than “00”, overcurrent apts to flow, and circuit parts may possibly be damaged.

BUS LINE ----“OK” is normal.

“SDA1-GND” ----SDA-GND short circuit. “SCL1-GND” ----SCL-GND short circuit. “SCL1-SDA1” ----SCL-SDA short circuit.

BUS CONT ----“OK” is normal.

When indication shows “Q uuu NG”, the device with the number may possibly be damaged. BLOCK

UV : TV reception mode V1 : VIDEO 1 input mode (a1) V2 : VIDEO 2 input mode (a2) V3 : VIDEO 3 input mode V4 : VIDEO 4 input mode

The items marked with

are not usable to display in the SELF DIAGNOSTIC FUCTION for some model.

1. ENTERING TO DESIGN MODE

1) Select the Service mode.

DESIGN MODE

2) While pressing CALL button on Remote and press MENU button on TV.

3) Press MENU button on TV.

S D

(Design mode) (Adjustment mode)

Press

ITEM

DATA

When QA02 is initialized, item “OPT3" of DESIGN MODE is set to the data of the representative model of this chassis family. Therefore, because ON-SCREEN specification remains in the state of the representative of model. This model is required to reset the data of item “OPT3".

2. SELECTING THE ADJUSTING ITEMS

Every pressing of CHANNEL button in the design mode changes the adjustment items in the order of table-3. ( button for reverse order)

Refer to table-3 for data of design mode. (See SETTING & ADJUSTING DATA on page 30)

3. ADJUSTING THE DATA

Pressing of VOLUME or button will change the value of data.

ELECTRICAL ADJUSTMENT

ITEM ADJUSTMENT PROCEDURE

WIDTH

(WID)

(Picture size wide)

HEIGHT

(HIT)

(Picture size wide)

WHITE BALANCE

(RCUT)

(GCUT)

(BCUT)

(RDRV)

(BDRV)

1. Call up the adjustment mode display, then select the item WID.

2. Press the VOLUME t button to get the picture so the left or right edges of raster begins to lack.

3. Press the VOLUME s button to advance the data by 11 steps.

Note : Check the horizontal picture position is correct.

1. Call up the adjustment mode display, then select the item HIT.

2. Press the VOLUME t button to get the picture so the top or bottom of raster begins to lack.

3. Press the VOLUME s button to advance the data by 9 steps.

Note : Check the vertical picture position is correct.

Black and White pattern

1. Set user control to reset position.

CONTRAST → Max

(

BRIGHTNESS, COLOR, TINT → Center.

2. Call up the adjustment mode display, then select the item RCUT.

3. Adjust the data of items RCUT, GCUT, and BCUT to "40H".

4. Press the -/-- (

5. Gradually rotate R, G and B screen volume of FOCUS PAC clockwise or counterclockwise until the raster appears slightly on the CRT through the each lens, and leave them. (Lookin to the lens in order to check the raster.)

6. Press the -/-- (

7. Press the a button on Remote, and select the Black and White pattern.

8. Adjust the data of items RCUT, GCUT and BCUT for proper white-balanced picture in low light area.

9. Adjust the data of items RDRV and BDRV for proper white-balanced picture in high light area.

10. Check the white balance in both low and high light areas. If necessary, perform again steps from 8 to 9.

) button on Remote. (Y-MUTE : ON)

) button on Remote. (Return to Normal Picture)

* There is not in the built-in test patterns.

It needs to prepare the pattern generator.

High light area Adjust "RDRV" or "BDRV" to be white.

Low light area Fine adjust "RCUT", "GCUT" or "BCUT" to be black.

)

C03P: Series (Reference factory adjustment)

TP-V

TP-G

(p-p)

Adjusting

standards

0.7 V (o-p)

4 lines

starts lighting

y Tube and

vel up to the

. 0.52 V

w color bar. 0.25 V (p-p)

ainbo

uch as possible. Point that

For details,

ts lighting.

y repeating electrical focus and

refer to [focus

adjusting

4 lines

method]

introduced in

8750k-0.002uv

t (103cd/m

t (17cd/m

10mV

een TP-V 0

Digital

voltmeter

oltmeter)

Adjusting methods

white peak.

1) Adjust amplitude from the pedestal le

1) Adjust the number of black collapsed lines of sub-bright signals.

2) Adjust after adjusting W/B, SCNT.

SIGNAL unit

Measuring points

adjustment

(PAL-I signal)

signal

Sub-bright Screen

1) Adjust the amplitude of the color bar

1) Adjust the amplitude of the r

TP02

SIGNAL unit

SECAM

signal (PAL) SIGNAL unit

color bar

vironment as m

actory-set screen adjusting MODE.

(Y mute, DRV.CUT=40H)

adjust the screen VR to the point that star

3) Directly observe the surface of Cathode Ra

optical focus adjustments.

Make above-mentioned adjustments for each tube of G, R, and B.

2) Use the tools and shade the CRT except the axes under

1) Adjust to the best position b

ular 1) Darken the en

CRT tub

screen 2) Set to f

(PAL-I) adjustment

Crosshatch

ature of the dark par

TP-G and adjust it to 0 mV by VCEN data.

adjustment.

Make above-mentioned adjustments for each tube of G, R, and B.

1) Adjust after adjusting Focus.

2) Use the tools and shade the CRT except the axes under

lines marked out black.

Make above-mentioned adjustments for each tube of G, R and B.

adjustment.

3) Use the screen volume to adjust the number of sub bright signal

1) Adjust the color temperature of the bright par

(No designation on polarity of degital v

TP-V 1) Connect a digital voltmeter betw

Screen

signal

Sub-bright signal

adjustment

(PAL)

Screen

adjustment

Between

Screen 1) Adjust the color temper

and TP-G and

Phillips Pattern

(PAL-I)

Settings Input signals

Audio system:

Items Names

SCNT Sub-contrast Picture mode 1 Sub-bright signal TPY1

Picture mode 1 Sub-bright TP02

center WIDE mode

Sub-bright Picture mode 1

BRTC

Sub-color Picture mode 1

center PAL

COLP Sub-color

COLS

actory screen

adjusting mode

Screen 1 F

center SECAM

adjustment

Screen 1

Picture mode 1 Retma signal Screen

Focus Focus

adjustment

WIDE mode adjustment

voltage Wide mode

voltage

adjustment

Screen 2 Screen 2 Picture mode 1

Dark part W/B Picture mode 1

RDRV Bright part Picture mode 1

RCUT

BDRV W/B WIDE mode

BCUT

VCEN Midpoint Picture mode 1

Green Alignment/Astigmatic Adjustments

Adjustment items Adjusting methods

Alignment Adjustment Procedures (Make this adjustment by using a lens cap. This adjustment should be

made after adjusting the electrical focus nd lens focus rough and making a Centering Adjustment.)

1. Set the G monochrome by a lens cap.

2. Cancel the magnetic fields of bipolar, tetrapolar, hexapolar magnets.

3. Receive the image of dot pattern which is generated by the signal generator. (White dot, Black background)

4. Turn the focus VR slightly left from the just focus point.

5. Adjust the bipolar magnet so that the dark brightness point is center of the light bright area.

6. Make a just focus adjustment.

7. Receivethe image of Philips pattern, and re-adjust the centering.

8. Repeat the above items 4 to 7. Re-adjust those items if necessary.

Light area (flare)

Dark point

Astigmatic Adjustment

Procedures (Make this adjustment by using a lens cap.)

1. Set G monochrome by a lens cap.

2. Input the dot pattern (white dot and black backgroud).

3. Turn the Focus VR slightly right from the just focus point.

4. Adjust the tetrapolar magnet so that the fuzzy dot is a perfect circle.

5. Check and confirm that the shapes of flare are almost the same circle even if turing the VR focus right and left.

6. Make a just focus adjustment.

7. Affix the magnet with adhesives.

Make adjustment so that the dot is a perfect circle.

Adjustment items Adjusting methods

Focus adjustment (Conditions)

- User adjustment: Dynamic mode, Cinema mode

- To be performed after centering magnet adjustment.

- Signal : Lens: R .... Crosshatch (PAL)

Electrical focus :

(Adjustment)

1. Common item

1) Make coarse adjustments in advance on the lens focus and electrical focus of each R, G, and B tube.

2. G adjustment

1) Set to the G monochrome by lens cap.

2) Receive the image of crosshatch.

G.... Crosshatch (PAL)

B .... Crosshatch (PAL)

R .... Crosshatch (PAL)

G.... Crosshatch (PAL)

B .... Crosshatch (PAL)

3) Adjust the G electric focus. Adjust the G electrical focus by the focus volume of focus block (Z410) so that the screen center will come to optimum focus. (Although the G electrical focus is to be adjusted to allow the scanning lines in the center of the screen to be seen most clealy, if G alignment and astigmatism are inferior with the appearance of vertical and horizontal flares in the center of and around the screen and if the lines become thicker, adjust to the best point observing the entire screen.)

4) Adjust the G lens focus. Keep an eye on the center of the crosshatch pattern and adjust so that the screen center will become clear. As a rough guide to decrease unevenness, adjust so that red flares on both sides of the crosshatch line will come to 1mm in thickness.

5) Repeat 3, 4, and attempt to further improve the focus quality.

Adjustment items Adjusting methods

Focus adjustment

Concerning items 1), 2), 3), and 5) of G adjustment, these are common to the ones on the previous page.

3. R adjustment

1) Set to the R monochrome by lens cap.

2) Receive the image of the internal crosshatched pattern.

3) Adjust the R electrical focus. Adjust by focus volume of the focus block (Z410) so that the screen center will come to optimum focus.

4) Adjust the R lens focus. Adjust so that the screen center will become the best.

5) Repeat 3, 4, and attempt to further improve the focus quality.

2/3L

4. B adjustment

1) Set to the B monochrome by lens cap.

2) Receive the image of internal crosshatch pattern.

3) Adjust the B electrical focus. Adjust the B electrical focus by using the focus VR on the focus block (Z410) so that the scanning line is the most distinct at the point of 2/3L left side from the screen center.

4) Adjust the B lens focus. Pay attention to the border of the blue line and the black (background) in the vicinity of the screen center. First of all, make coarse adjustments of the lens, and move the lens adjusting screw to the right at the point being considered as the best focus. Then, the lines of the border become clear. Check and confirm under the circumstance that a flare appears. On the contrary, if the lens adjusting screw is moved to the left from the situation, the flare will disappear, and at this point you will find a point from which the borderline itself begins to go out of focus. Adjust to the very point where the focus begins to go out.

Adjusting

standards

Differential of

mm 5

dummy screen

cross mark and

Philips pattern

cross mark

Within

3mm

Color gap of

center screen

Within

9 ± 1 flags

CMUT-ON

7 ± 1 flags

CMUT-OFF

Left+Right

6 ± 1 flags

CMUT-OFF

VLIN.

y HIT data until

. If not, adjust

ertically

y HIT data until the upper and

Adjusting methods

wer flag end is aligned with the screen end.

ertical amplitude b

Adjusts the DY tilt of R and B as same manner as above step 1).

1) After adjustment of G position coarsely using the centering

magnet, adjust DY so that the center cross mark of the dummy

screen and the cross mark of Philip pattern can approach

mutually.

1) Adjustbthe vertical and horizontal screen positions using

the centering magnet so that the center cross mark of the

dummy screen and the cross mark of the Philips pattern can

overlap precisely.

This will be carried out individually for the tubes of R, G, and B.

lower flags appear on the screen.

(Caution) Do not move the HPOS and VPOS data.

1) Shorten the v

either upper or lo

2) The amplitude should be balanced v

3) Subsequently, lengthen the vertical amplitude b

y the mask.

ten the amplitude

k to the left screen edge.

ks will come to 9 in total (each 4.5 flags

izontal amplitude by WID data so that the

horizontally until the left and right flags appear completely

number of register mar

at the left and right sides).

1) The upper first one on the screen is to be hidden b

2) Lengthen the hor

1) Lower the WID data in the beginning, and shor

1) Adjust the upper screen so that it may contact the 16:9 frame.

2) The amplitude should be balanced vertically

1) Adjust the 3rd left register mar

1) Adjust the upper screen so that it may contact the 16:9 frame.

adjustment

Screen

Measuring points

Philips Pattern

(PAL-I)

Settings Input signals

Picture mode 1

100Hz

Items Names

of DY tilt

Adjustment

adjustment

Screen

Philips Pattern

(PAL-I)

Picture mode 1

100Hz

magnet

of centering

Adjustment

adjustment

Screen

(PAL-I)

CMUT-ON

Picture mode 1 Philips Patter

amplitude 100Hz

adjustment

HIT Vertical

VLIN

adjustment

(PAL-I)

CMUT-ON

100Hz

Picture mode 1 Philips Pattern Screen

amplitude

adjustment

WID Horizontal

Screen

adjustment

Philips Pattern

(PAL-I)

16:9mode

CMUT-ON

100Hz

Picture mode 1

amplitude

SHIT Vertical

Picture mode 1 Monoscope Screen

adjustment

NHIT Vertical

adjustment

signal

NTSC

120Hz

amplitude

adjustment

NTSC

NLIN

adjustment

Monoscope Screen

NTSC

120Hz signal

Picture mode 1

amplitude

NWID Vertical

Picture mode 1 Monoscope Screen

NTSC

adjustment

NSHI Ver tical

adjustment

signal

NTSC

120Hz

16:9mode

amplitude

adjustment

NTSC

Deflection amplitude setting for 43PH46P (HIT/WID adjusting method under muted convergence)

* Green patter n under the m uted con vergence

0 point

1st flag

3rd flag

Castration border line

Screen edge

Hor izontal amplitude:: Left and right register marks of Philips pattern C + D = 9 (See A of the upper figure..) Ver tical amplitude: The point where the space between 1st and 2nd line from the outside comes into contact

with the screen edge from the upper and lower register marks of Philips Pattern.

1. SCREEN ADJUSTMENT

CONVERGENCE ADJUSTMENT

The adjustment is carried out on six screens:

1 PAL 100Hz Wide/4:3 2 PAL 100Hz Super live 3 PAL 100Hz Cinema 4 PAL 100Hz Subtitle/14:9 5 PAL Progressive all 6 NTSC Progressive all

When making the adjustments, feed an external signal to make a synchronization.

1-1. Entering the Adjustment Menu

7 key

Note:

The convergence circuit is a circuit to eliminate screen distortion and can not make a drastic correction such as to correct entire screen size. An excessive correction may actuate the protection circuit. So a care will be necessary. Before proceeding to the adjustment for each screen, always perform the adjustments for vertical size (HIT) and horizontal size (WID) with the main deflection data changed.

The menu order is 1~6 .... when the input signl is PAL. (In this

case item 7 is not selectable)

The menu order is 7 .... when the input signal is NTSC. (In this

case, item 1~6 are not selectable)

MENU Selection

+ key

Screen adjustment

Conver adjust menu

1 ADJUST PAL 100HZ WIDE 2 PAL WIDE TO OTHERS 3 ADJUST PAL 100HZ S.LIVE 4 ADJUST PAL 100HZ CINEMA 5 ADJUST PAL 100HZ S.TITLE 6 ADJUST PAL Progressive

7 ADJUST NTSC Progressive

7 key

+ key

Fig. 1

1-2. Remote Control Key

i g

b j

o key ............... Push this key twice and the set con-

sole menu key to enter the service

mode.

7 key ................. Push 7 key to enter and cancel the

convergence menu.

5 key ................. Cursor shift / data change mode

change-over.

2 key ................. Cursor up / adjusting point up.

4 key ................. Cursor left / adjusting point left

8 key ................. Cursor down / adjusting point down

6 key ................. Cursor right / adjusting point right

3 key ................. Cursor colour change (Adjusting

colour selection).

S key ................ Execution key on convergence menu.

s key ................ Up key on convergence menu.

t key ................ Down key on convergence menu.

Fig. 2

1-3. Adjusting Screen

1) Adjusting menu

NO Description

1 ADJUST PAL 100 Hz

WIDE

2 PAL WIDE TO OTHERS Automatically converted from the PAL 100Hz WIDE screen data to the data of the other

3 ADJUST PAL S.LIVE Used for manual adjustment of the PAL Super live screen.

4 ADJUST PAL CINEMA Used for manual adjustment of the PAL Cinema screen.

5 ADJUST PAL S.TITLE Used for manual adjustment of the PAL Subtitle screen.

6 ADJUST PAL

Progressive

Item

Used for manual adjustment of PAL 100Hz WIDE screen. (This item is selectable when input-source is PAL)

screens; PAL 100Hz Super live, PAL 100Hz Cinema, PAL 100Hz Subtitle, PAL Progressive, NTSC Progressive. Re-adjustment is required for getting fine conversion on each screens by following menu. Note: This menu overwrites current data of these modes. If the convergence-conditions of these modes are good, don't execute this menu. (This item is selectalble when input-source is PAL)

(This item is selectable when input-source is PAL)

Used for manual adjustment of the PAL Progressive screen. (This item is selectable when input-source is PAL)

7 ADJUST NTSC

Progressive

Used for manual adjustment of the NTSC Progressive screen. (This item is selectable when input-source is NTSC)

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