TOSHIBA 40PW03G, 40PW03B Service Manual
FILE NO. 030-200001
SERVICE MANUAL
COLOUR TELEVISION
C9PJ Chassis
40PW03G,40PW03B
PRINTED IN U.K Feb., 2000 UK
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
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
ELECTRICAL ADJUSTMENT................................................................................................................................. 14
CONVERGENCE ADJUSTMENT .......................................................................................................................... 23
SCREEN AND MIRROR ALIGNMENTS ................................................................................................................32
CIRCUIT CHECKS .................................................................................................................................................33
CHAPTER 2 SPECIFIC INFORMATIONS
SETTING & ADJUSTING DATA ..............................................................................................................................34
LOCATION OF CONTROLS ................................................................................................................................... 35
CIRCUIT BLOCK DIAGRAM ..................................................................................................................................37
TABLE OF CONTENTS
MECHANICAL DISASSEMBLY .............................................................................................................................. 38
CHASSIS AND CABINET REPLACEMENT PARTS LIST......................................................................................39
PC BOARDS BOTTOM VIEW.................................................................................................................................59
TERMINAL VIEW OF TRANSISTORS ................................................................................................................... 73
SPECIFICA TIONS .................................................................................................................................................. 75
APPENDIX:
CIRCUIT DIAGRAM
– 2 –
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 abov e 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 po wer
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 34)
Each time a receiver requires servicing, the high voltage
should be checked follo wing the HIGH VOLT AGE 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 any one 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. F or contin ued 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 NO TICE below.
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
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 b y 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.
– 3 –
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.
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
8 o’clock
4 o’clock
Lens Assembly
R
GB
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
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
– 4 –
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
4.
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 23.)
7. WHITE BALANCE ADJUSTMENT (page 15.)
Adjustments are complete.
Anode Cap
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
Silicon
(On shaded area)
TSE3843W #23960136
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.
2 ~ 5 mm
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.
Screw
for D.Y
Screw for SVM coil
Anode lead holder
– 5 –
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
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
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.
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.
2
User convergence center check
Centering (PAL)
Convergence adjustment
(PAL/NTSC)
White balance
Sub bright adjustment
End
1
RGB FOCUS ADJUSTMENT
1. Call-up the adjustment mode (see page 10)
2. Press a b utton 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 cover ing 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 -/-- button on Remote. (Y-MUTE : ON)
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 -/-- button on Remote. (Return to Normal
Picture)
(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
– 6 –
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 war ming 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 displa y
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 slots of screen edge
(top and bottom, left and right).
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
Note: Nor mally the most clearly visible point of the scanning
line is the sharpest point of the Green focus, howev er 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 displa y
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 displa y
the internally-generated black cross-hatch (See TEST SIGNAL SELECTION on page 11.)
19. Use the focus VR of “B” of the f ocus 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 TV/VIDEO button on the Remote Control to display
the black cross-hatch.
4. Adjust G centering magnet so that the cross-hatch pat-
tern 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 pat-
tern center comes to screen center.
– 7 –
LOCATION OF SCREEN AND FOCUS VR'S
To remove the Speaker grille and Front panel.
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
SCREEN VR
FOCUS VR
Front panel
Speaker grille
REPLACEMENT OF HIGH VOLTAGE CABLE
ANODE LEAD
RUBBER BOOT
LEAD HOLDER
B
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 awa y
Lead Holder.
NOTE : THE LEAD HOLDER IS ATTACHED TO
TP A5007 (Z450), BUT IS NO T A TTACHED TO
ANODE LEAD AND ANODE CAP. RUBBER
BOOT IS ATTA CHED TO ANODE LEAD AND
ANODE CAP.
RG
Fig. a
Z450 TPA5007
– 8 –
2. Detaching Lead Holder
LOCK
LEAD HOLDER
RUBBER BOOT
Fig. b
OLD
ANODE LEAD
or
ANODE CAP
Cut here rubber boot
and lead together to
detach Lead Holder.
WARNING: BEFORE SER VICING THIS CHASSIS , READ THE "X-RAY RADIA TION PRECA UTION", "SAFETY PRECAU-
TION" AND "PRODUCT SAFETY NOTICE" ON PAGE 3 OF THIS MANUAL.
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.
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
– 9 –
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
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
2. DISPLAYING THE ADJUSTMENT MENU
1) Press MENU button on TV.
Service mode
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” (or “CNTX”) selection : 4 button
“COLC” (or “SCOL”) selection : 5 button
“TNTC” selection : 6 button
Convergence adj : YELLOW button
Self diagnostic display ON/OFF : 9 button
Item
Data
(Service mode display)
Adjustment mode
S
Press
Press
Item
Data
S
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)
CAUTION : Never try to perform initialization unless you have changed the memory IC.
– 10 –
4. SELECTING THE ADJUSTING ITEMS
1) Every pressing of CHANNEL s button in the service mode changes the adjustment items in the order of table-2.
(t button for reverse order)
Refer to table-2 for preset data of adjustment mode.
(See SETTING & ADJUSTING DATA on page 34)
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 s button on the TV. The initialization of QA02 has
been complated.
3. Check the picture carefully. If necessary, adjust any adjustment item above.
Perfor m “Auto search Memory” on the owner’s manual.
CAUTION: Never attempt to initialize the data unless QA02 has been replaced.
7. TEST SIGNAL SELECTION
1) Every pressing of a button on the Remote Control changes the built-in test patterns on screen as described below
in SERVICE MODE.
Signal off
NTSC signals (5 patterns)
PAL signals (5 patterns)
Signals Picture
• Red raster
• Green raster
• Blue raster
• All White
• Black cross-hatch
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
The signals marked with are not usable to display in the Test signal for some model.
*
– 11 –
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.
<SELF CHECK>
1
2300****
2
POWER : 00
3
BUS CONT : OK
4
BLOCK : UV V1 V2 V3
QV01
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
Indicated color of mode now selected : Green and Red
Indicated color of other modes : White
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 e xist in input
signal line including QV01.
QV01 : In case of indication green ---Normal
In case of indication red with input signal---Failure may exist in output line including QV01.
1 Part number of microcomputer (QA01)
2 Operation number of protecting circuit ----“00” is nor-
mal.
When indication is other than “00”, overcurrent apts to
flow, and circuit parts may possibly be damaged.
3 BUS CONT ----“OK” is normal.
When indication shows “Q uuu (Green: OK, Red:
NG)”, the device with the number ma y possibly be damaged.
NOTE: Component which controls character display on
screen is QT01 (TELETEXT IC.). If this display
function fails to operate due to damage in QT01,
self diagnosis procedure is as follows.
(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.
4 BLOCK
UV : TV reception mode
V1 : VIDEO 1 input mode (a1)
V2 : VIDEO 2 input mode (a2)
V3 : VIDEO 3 input mode (a3)
The items marked with are not usable to display in the SELF DIAGNOSTIC FUCTION for some model.
*
– 12 –
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)
When QA02 is initialized, items “OPT0” and “OPT1” of DESIGN MODE are 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 items “OPT0” and “OPT1”.
2. SELECTING THE ADJUSTING ITEMS
Every pressing of CHANNEL t button in the design mode changes the adjustment items in the order of table-3.
(s button for reverse order)
Refer to table-3 for data of design mode.
(See SETTING & ADJUSTING DATA on page 34)
3. ADJUSTING THE DATA
Pressing of VOLUME s or t button will change the value of data.
Press
Press
ITEM
DATA
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
– 13 –
PAL
ELECTRICAL ADJUSTMENT
ITEM ADJUSTMENT PROCEDURE
WIDTH
(WID)
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
HEIGHT
(HIT)
1. Select picture size WIDE mode.
2. Call up the adjustment mode display, and press the TV/VIDEO
button on the remote untill the white cross dot pattern appears on
the screen.
3. Press the CHANNEL s or t button to select the item WID and
press the VOLUME s or t button to get the pictuer so the left and
right edges of rester begin to lack.
4. Press the VOLUME s or t to advance the data 22 steps.
* CAUTION
"WID" data don't adjust other picture size, only WIDE mode.
1. Call up the adjustment mode display, then select the item HIT.
2. Press the VOLUME s or t button to get the picture so the top of
raster begins to lack.
3. Press the VOLUME s button to advance the data by following steps.
WIDE: 7 steps
Super Live: 11 steps
CINEMA: 10 steps
* CAUTION
First adjust WIDE mode next other.
Note : Check the vertical picture position is correct.
NTSC
WIDTH
(NWID)
HEIGHT
(NHIT)
1. Select picuter size wide mode.
2. Call up the adjustment mode display, and press the TV/VIDEO
button on the remote untill the white cross dot pattern appears on
the screen.
3. Press the CHANNEL s or t button to select the item WID and
press the VOLUME s or t button to get the pictuer so the left and
right edges of rester begin to lack.
4. Press the VOLUME s or t to advance the data 16 steps.
5. Change picture size Super Live and CINEMA adjust "NWID" data
same value for WIDE mode.
1. Call up the adjustment mode display, then select the item HIT.
2. Press the VOLUME s or t button to get the picture so the top of
raster begins to lack.
3. Press the VOLUME s button to advance the data by following steps.
WIDE: 7 steps
Super Live: 13 steps
CINEMA: 10 steps
Note : Check the vertical picture position is correct.
– 14 –
ITEM ADJUSTMENT PROCEDURE
WHITE BALANCE
(RCUT)
(GCUT)
(BCUT)
(RDRV)
(BDRV)
Black and White pattern
High light area
Adjust "RDRV" or "BDRV" to be white.
Low light area
Fine adjust "RCUT", "GCUT" or "BCUT" to be black.
1. Set user control to reset position.
CONTRAST → Min.
(
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 a button on PJTV. (Y-MUTE : ON)
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 a button on PJTV. (Return to Normal Picture)
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.
)
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
– 15 –
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
2.4 ± 0.1 Vpp
y Adjust the amplitude from the pedestal
4 ± 1.5 linee
level to the white peak.
lines of the sub-bright signal.
y Adjust the number of collapsed black
1.30 ± 0.1 Vpp
W/B and SCNT.
x Carry out adjustment after adjusting the
y Adjust the amplitude of the color bar.
100 ± 10 %
the waveforms can become flat.
x Adjust the P-P value of the upper half.
y Use a synchroscope and adjust so that
x Adjust at the white part.
1.95 ± 0.1Vop
(Apply SCREEN mute during adjust-
ment)
y Adjust the amplitude of the color bar.
0 ± 10 mV
chrome signal part can meet the level of
x Adjust the P-P value of the upper half.
y Adjust so that the level of the mono-
0 ± 10 mV
the H.BLK.
BELL.
chrome signal part can meet the level of
the H.BLK.
BELL.
x Carry out adjustment after adjusting the
y Adjust so that the level of the mono-
x Carry out adjustment after adjusting the
TP46B SIGNAL unit
Sub-bright signal
Dynamic mode
Sub-contrast
Screen adjustment
(PAL-I signal)
Sub-bright signal
Audio system: I
Dynamic mode
Sub-bright
center
TP46B
SIGNAL unit
TPM01
SIGNAL unit
Sub-bright signal
(PAL)
SECAM color bar
Dynamic mode
Sub-color
center
PAL
BELL filter
TP46B
SIGNAL unit
SECAM color bar
Dynamic mode
Sub-color
center
TP02
SECAM color bar
Dynamic mode
SECAM
SECAM
SIGNAL unit
R-Y black level
TP01
SIGNAL unit
SECAM color bar
Dynamic mode
SECAN
B-Y black level
Item Name Setting Input signal Measuring point Adjusting method Adjustment standard
(Reference factory adjustment)
[SCNT]
[BRTC]
[COLP]
[BELL]
– 16 –
[COLS]
[SRY]
[SBY]
Point where it
begins to emit light.
For details, refer to
the focus adjust-
ment method
introduced in the
next page.
8750k–0.002uv
8750k–0.002uv
30.7 ± 0.2kV
possible.
x Enter factory-screen-adjustment mode.
y Make the surrounding as dark as
CRT screen
(Y mute, DRV.CUT. = 40 H)
adjust the screen VR to the point where
it begins to emit light.
perform above-mentioned adjustments.
c Directly observe the CRT screen, and
v Use R, G, and B tubes respectively to
possible position by repeating electrical
y Make adjustments to achieve the best
Crosshatch signal
Screen adjustment
Retoma signal
(PAL-I)
axis under adjustment, from any light.
and optical focusing.
x Use jigs to protect the CRTs, except the
c Use R, G, ad B tubes respectively to
).
2
perform above-mentioned adjustments.
bright part (103cd/m
y Adjust the color temperature of the
y Adjust the color temperature of the dark
Screen adjustment
Screen adjustment
).
2
part (17cd/m
y Connect a voltmeter between T461 and
Between T461 and
Phillips pattern
Z450 and adjust the high voltage with
R450.
(User adjustment standard)
Z450
(PAL-I)
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
Factory- screen-
adjustment mode
Screen
Item Name Setting Input signal Measuring point Adjusting method Adjustment standard
Screen
adjustment
Dynamic mode
Cinema mode
Focus
Focus
adjustment
– 17 –
Bright part W/B
RDRV
BDRV
Dark part W/B
RCUT
BCUT
Dynamic mode
High voltage
High voltage
adjustment
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
Focus adjustment method (1/2)
(2) GREEN: Internal crosshatch signal (white crosshatch on black background)
(3) User adjustment: Dynamic mode, cinema mode
Conditions: (1) RED, BLUE: Internal Retoma signals (PAL)
(4) Carry out electrical focus and lens focus after rough adjustment.
(5) Use the jig to protect everything, except the color subjected to adjustment, from exposure to light.
each R and B projection tube to the position where the center of the screen gets optimally focused.
G so that the vertical scanning lines on the screen center can appear most clearly.
best possible focus.
(1)Receive the internal Retoma signals, use the focus VR of the focus pack (Z410), and adjust the electrical focus of
(2)Receive the internal crosshatch signals, use the focus VR of the focus pack (Z410), and adjust the electrical focus of
(1)R, B: Receive the internal Retoma signals, watch the screen center and its periphery, and make adjustment to the
(2)G: Adjust this by the method introduced in the next page.
set on the screen.
until immediately before the cutoff adjustment in order to stabilize the G’s coupling liquid temperature.
y Carry out anticipated adjustment on the G lens, considering the time until the lens focus stabilizes.
x The level of anticipated adjustment on the G lens results in a required level of correction, if an adjustment point is
c During a heat run, be sure to keep lower the G’s screen VR of the focus pack from turning on the power of the set
Model Adjustment points Adjustment methods
40PW03G
40PW03B
Electrical focus
– 18 –
Lens focus
(Precautions)
GREEN lens focus adjustment
Focus adjustment method (2/2)
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
the very best, and check that the left-and-right focus balance is appropriate.
(Check left-and right balance of G lens focus)
(2)Watch the horizon of both the left and right ends on the horizontal axis of the screen, adjust the lens focus of G to
Screen
Model Metodo di regolazione
Adjusting points
[1] 40PW03 series (1)Receive internal crosshatch signals, use the lens cap, and concentrate on the single color of G.
y Use the left (or right) end crosshatch and make the best adjustment on the G’s lens focus.
x Check the right (or left) end focus.
(3)If the left and right lens focus is not properly balanced (tendency for flare), divide and adjust it to the middle grade.
(4)Check on the periphery, and make certain that the focus grade lies within a tolerable level (including flare).
Right end
Left end
– 19 –
ø 100 mm ø 100 mm
(Point of observation)
Inside the circle of 100mm that is in contact with
left and right bezels.
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
Less than ø7mm
Adjustment standard
screen positions and centering magnet
so that the central + mark of the dummy
screen and the + mark of the Phillips
pattern can overlap in conformity.
(1)Adjust the vertical and horizontal
Upper and lower
flags are to be in
contact
Carry this out individually on 3 tubes of
R, G, and B
(Note) Do not move HPOS, VPOS data
amplitude using HIT data until the upper
and low flags emerge on the screen.
the HIT data until either upper or lower
flag end conforms to the screen end
(Adjust the vertical center of the pattern
to the central mark of the screen.)
(1)Turn the screen size to WIDE.
(2)In the first place, shorten the vertical
(3)Then, extend the vertical amplitude with
The inner circle is
to contact the
screen edge
bottom of the inner circle of Phillips
pattern will contact the screen edge.
(Note) VLIN adjustment is not performed.
(1)Turn the screen size to Super-live.
(2)Adjust with the HIT so that the top and
bottom of the Phillips pattern as shown
in the next page.
(1)Turn the screen size to CINEMA.
(2)Adjust the registers on the top and
(Note) Do not touch the centering magnet
Screen adjustment
Screen adjustment
Completion of adjustment
Phillips pattern
(PAL-I)
Dynamic mode
Phillips pattern
(PAL-I)
Dynamic mode
WIDE mode
Vertical ampli-
tude adjustment
(PAL WIDE)
Screen adjustment
Phillips pattern
(PAL-I)
Dynamic mode
Super-live mode
Vertical ampli-
tude adjustment
(PAL Super-live)
Screen adjustment
Phillips pattern
Dynamic mode
Vertical ampli-
(PAL-I)
CINEMA mode
tude adjustment
(PAL cinema)
Item Name Setting Input signal Measuring point Adjusting method
Screen
position
adjustment
HIT
VLIN
– 20 –
HIT
VLIN
HIT
VLIN
Adjustment standard
bottom of the Phillips pattern as shown
in the next page.
(1)Turn the screen size to SUB-TITLE.
(2)Adjust the registers on the top and
(Note) Do not touch the centering magnet
pattern are to contact the screen edge.
be 0.
(1)Turn the screen size to WIDE.
(2)The left and right flags of the Phillips
(3)The user center position adjustment is to
(1)Turn the screen size to WIDE mode.
(2)The 1st line on the screen is to be
hidden by the mask.
mode.
(1)Turn the screen size to SUPER-LIVE
(2)Adjust so that the upper side 3rd line on
the screen will contact the screen edge.
(3)Do not adjust the NVLI.
upper, lower, and left-and-right ends will
contact the screen edge.
(1)Turn the screen size to CINEMA mode.
(2)Adjust so that the character 30 on the
mode.
the register on the screen will contact the
screen.
(1)Turn the screen size to SUB-TITLE
(2)Adjust so that the upper side 5th line of
(3)The NVLI is not to be adjusted.
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
Screen adjustment
Screen adjustment
Completion of adjustment
Phillips pattern
(PAL-I)
Dynamic mode SUB-
TITLE mode
Vertical ampli-
tude adjustment
(PAL SUB-
TITLE)
Phillips pattern
(PAL-I)
Dynamic mode
WIDE mode
Vertical ampli-
tude adjustment
PAL WIDE
Screen adjustment
Monosco signals
Dynamic mode
Vertical ampli-
Screen adjustment
NTSC
LEADERE-435B
Monosco signals
NTSC
LEADER-435B
WIDE mode
Dynamic mode
SUPER-LIVE mode
tude adjustment
NTSC WIDE
Vertical ampli-
tude adjustment
SUPER-LIVE
Screen adjustment
Monosco signals
NTSC
Dynamic mode
CINEMA mode
NTSC
Vertical ampli-
tude adjustment
Screen adjustment
LEADER-435B
Monosco signals
NTSC
LEADER-435B
Dynamic mode
SUB-TITLE mode
CINEMA
NTSC
Vertical ampli-
tude adjustment
SUB-TITLE
NTSC
Item Name Setting Input signal Measuring point Adjusting method
HIT
VLIN
WID
NHIT
NLIN
– 21 –
NHIT
NHIT
NLIN
NHIT
NLIN
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
Adjustment standard
edge of the screen.
the WIDE screen also input the identical
(2)Adjust the 2nd left register to the left
(3)When you change the NWID value on
Adjustment standard
data to SUPER-LIVE and CINEMA.
32 ± 0.1 MHz
+9V to #13 terminal
–9V to #14 terminal.
L719.
(2)Adjust emitter’s frequency to Q709 with
Screen adjustment (1)Turn the screen size to WIDE.
Completion of adjustment
Monosco signals
NTSC
LEADER-435B
Dynamic mode
WIDE mode
amplitude
adjustment
WIDE NTSC
Q709 Emitter (1)Apply +5V to #15, #16 terminals
Unit adjustment DIGITAL-CONVER
Item Name Setting Input signal Measuring point Adjusting method
NWIDE Horizontal
– 22 –
Item Name Setting Input signal Measuring point Adjusting method
PLL
Frequency
adjustment
CONVERGENCE ADJUSTMENT
1. Screen Adjustment
The four PAL screens Wide/4:3, Super Live, Cinema and Subtitle, and the four NTSC screens Wide/4:3, Super Live,
Cinema and Subtitle are adjusted. When adjusting, input an external signal for matching the sync.
CAUTION: The con vergence circuit eliminates screen distortion but cannot make large corrections such as changing
the overall screen size. Use caution because the protection circuit will be activated if corrections are excessively
large. Before starting to adjust the various screens, alw ays adjust the v ertical size (HIT) and horizontal size (WID) b y
changing the main deflection data.
Execute the adjustment screens in the sequence Wide/4:3 → Super Live → Cinema → Subtitle for both PAL and
NTSC.
1-1. Entering Adjustmet Menu
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
+ + MENU key
F+Yellow key
Menu screen
CONVER ADJUST MENU
1
Adjust PAL Wide
2
PAL Wide to Others
3
Adjust PAL S.Live
4
Adjust PAL Cinema
5
Adjust PAL S.title
6
PAL to NTSC (Wide)
7
PAL to NTSC (ALL)
8
Adjust NTSC Wide
9
NTSC Wide to Others
10
Adjust NTSC S.Live
11
Adjust NTSC Cinema
12
Adjust S.title
S
Service data indication
+
or
MENU SELECTION
+ key
SCREEN
ADJUSTMENT
CALL: to exit
Adjusting screen
+ key
– 23 –
1-2. Remote Control Key
b
h
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
i
g
j
F
1
2
f
Çi
CALL
3
TEXT
4 5 6
7 8
-/--
v
SIZE
MENU EXIT
0
?
ENTER
SELECT
9
a
^
CH
yX
V
l
p
k
c
a o key............... Push this key twice and the set con-
sole menu key to enter the service
mode.
b F key................. Push this key and yellow key to enter
the convergence menu.
c Yellow or 7 key.. Convergence menu key.
g 5 key................. Cursor shift / data change mode
change-over.
h 2 key................. Cursor up / adjusting point up.
i 4 key................. Cursor left / adjusting point left
j 8 key................. Cursor down / adjusting point down
k 6 key................. Cursor right / adjusting point right
l 3 key................. Cursor colour change (Adjusting
colour selection).
m + key................. Execution key on conv ergence menu.
n s key ................ Up key on convergence menu.
o t key ................ Down key on convergence menu.
p CALL key .......... Termination key on convergence
menu.
n
o
REC
a
m
P
VTR/DVD
Fig. 2
– 24 –
1-3. Adjusting Screen
1) Adjusting menu
NO Description
1 Adjust PAL Wide Used for manual adjustment of the Wide/4:3 screen in the PAL mode.
2 P AL Wide to others Automatically sa ves approximate supplementary data f or the other P AL screens based
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 S.title screen.
Item
Returns to the original screen data screen before data conversion, explained below.
on the PAL Wide/4:3 screen data.
First, the PAL Wide/4:3 screen data are converted to Super Live and the values are
saved. Next, the data are converted to Cinema and the values are saved. Finally, the
data are converted to Subtitle and the values are sav ed, and then the operation ends .
Manually check the other screen modes as described below and make corrections if
distortion, etc., is present.
Please be aware that all PAL screens are re-adjusted when this menu is selected and
executed.
Select this mode for Super Live screen color matching and distortion adjustment.
Use the specified dimensions when adjusting.
Select this mode for Cinema screen color matching and distortion adjustment.
Use the specified dimensions when adjusting.
Select this mode for S.title screen color matching and distortion adjustment.
Use the specified dimensions when adjusting.
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
6 PAL to NTSC (Wide) PAL Wide/4:3 screen data is calculated, converted to NTSC Wide/4:3 approximate
data and saved.
To assure accurate adjustments, select the manual mode explained below and chec k,
then apply color matching and distortion adjustments.
7 PAL to NTSC (All) Data for all PAL screens is converted to approximate data for the NTSC screens and
saved.
To assure accurate adjustments, select the manual mode explained below and chec k,
then apply color matching and distortion adjustments.
8 Adjust NTSC Wide Used for manual adjustment of the NTSC Wide/4:3 screen.
Select this mode for Wide/4:3 screen color matching and distortion adjustment.
Use the specified dimensions when adjusting.
9 NTSC Wide to others Approximate supplementary data for the other NTSC screens is automatically saved
based on the NTSC Wide/4:3 screen data.
First, the NTSC Wide/4:3 screen data are converted to Super Live and the values are
saved. Next, the data are converted to Cinema and the values are saved. Finally, the
data are converted to Subtitle and the values are sav ed, and then the operation ends .
Manually check the other screen modes as described below and make corrections if
distortion, etc., is present.
Please be aware that all NTSC screens are re-adjusted when this menu is selected
and executed.
– 25 –
NO Description
10 Adjust NTSC S.Live Used for manual adjustment of the NTSC Super Live screen.
11 Adjust NTSC Cinema Used for manual adjustment of the NTSC Cinema screen.
12 Adjust NTSC S.title Used for manual adjustment of the NTSC Subtitle screen.
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
2) Adjustment Screen
Item
Select this mode for Super Live screen color matching and distortion adjustment.
Use the specified dimensions when adjusting.
Select this mode for Cinema screen color matching and distortion adjustment.
Use the specified dimensions when adjusting.
Select this mode for Subtitle screen color matching and distortion adjustment.
Use the specified dimensions when adjusting.
X : 1
Y : 1
C : R
S : 08
Wide
Displayed when the cursor blinks and cleared
when the cursor lights steady.
X Cursor horizontal position display
Displayed when the cursor blinks and
cleared when the cursor lights steady.
Displays the current screen mode.
Y Cursor vertical position display
C Cursor color select display
S Menu select display
3) Adjustment Sequence
When the initial screen opens, X = 1, Y = 1, C = R and S = [Select Menu] are displayed as the defaults. The cursor can
now be moved up, down, left and right using the (2), (8), (4) and (6) keys of the remote control. Select the desired
adjustment and press the (5) key; the cursor will light steady and the screen display will be cleared. Again press the (2),
(8), (4) and (6) keys of the remote control to adjust the shape of the screen. When adjustment has been completed, press
the (+) key to return to the Adjustment Menu. When all of the screen adjustments have been completed, turn off the main
power supply of the set to reset the menu.
– 26 –
2. Case Study
In many cases, color matching problems can be solved by retur ning the HIT and WID data for main deflection to the
initial adjustment values. Convergence cannot be re-adjusted in the following cases.
2-1 When the CRT has been replaced
Main deflection re-adjustment and color matching are necessary when the CRT has been replaced. Use the following
procedure.
1. Replace the blue and red CRTs.
2. Perform the blue and red yoke horizontal adjustments in relation to the green CRT. Press the yokes and speed
modulation coils + alignments onto the CRTs and fasten after making sure that there are no gaps.
3. Adjust the blue and red alignments (refer to the detailed alignment adjustment item).
4. Use centering magnets to center the blue and red CRTs in relation to the green CRT.
5. Adjust the main deflection HIT and WID data, using the most accurate location in relation to the green as data.
6. Use convergence to match the colors for each screen. Green will not work at this time.
7. When the convergence adjustments have been completed for all screens, then replace the green CRT.
Repeat the procedures in steps 2 - 5 for the green CR T but this time use con vergence to match the colors using red and
blue as reference.
2-2 When replacing the convergence unit
Generally , all of the screens m ust be re-adjusted when the conv ergence unit is replaced, b ut the process can be greatly
shortened by using the following method.
1. Replace the memory (Q711, Q712, Q713) of the new unit with the memory (Q711, Q712, Q713) of the defective unit.
This makes it possible to quickly reproduce the previous screen status when installed in the set.
2. Install the new unit with the old memory in the set and turn on the power . The entire screen will mov e linearly in either
the vertical or horizontal direction.
3. Use centering magnets to re-adjust the green, red and blue centers.
4. There is possibility of color mismatching or differences in screen siz e when the v arious screens are checked. In such
case, adjust the main deflection and apply a slight amount of convergence color matching.
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
2-3 When none of the above cases apply (rare case)
An unexpected situation or major operational error , etc., could be considered b ut it is recommended that all screens be
matched starting from the beginning. If the initial positions of the centering magnets are unknown, disconnect the
connectors for the convergence sub-yoke outputs one at a time, adjust the CRT centering and then start the following
adjustments.
1. Make sure that there is plenty of room for the static cross convergence to be moved left, right, up and down. If
sufficient space is not available, move to an appropriate location and then re-adjust the centering.
2. Enter the convergence adjustment mode and call out the menu. (Leave the PAL signal connected.)
3. Select 1. Adjust PAL Wide and adjust the PAL mode Wide/4:3 screen manually in accordance with the dimension
diagram.
4. When the Wide/4:3 screen adjustment has been completed, return to the Main Menu and select 2. PAL Wide to
others.
The screen will change automatically and the Wide, Cinema and Subtitle screens will be created automatically.
5. Next, select 3. Adjust PAL S.Live and mainly adjust in the horizontal direction in accordance with the dimension
diagram.
6. Next, select 4. Adjust PAL Cinema and fine adjust to remove any Cinema screen distortion.
7. Next, select 5. Adjust PAL Subtitle and fine adjust to remove any Subtitle screen distortion.
8. Next, select 7. PAL to NTSC (ALL), then calculate and copy the data for all PAL screens in the NTSC mode. At this
time, the calculations and screen shape changes will be performed automatically and the NTSC screen data
corresponding to the PAL screens will be transferred.
9. Select in sequence 8. Adjust NTSC Wide, 10. Adjust NTSC S.Live, 11. Adjust NTSC Cinema and 12. Adjust NTSC
Subtitle, check the respective NTSC screen modes and, if necessary, adjust for any distortion.
All of the screens can be adjusted with the above process but make every effort not to change the factory data unless
absolutely necessary. Try not to change the convergence data any more than necessary.
– 27 –
3 Screen adjustment dimensions
3-1 WIDE/4:3 (PAL mode)
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
235
207.5
124.5
41.5
0
(screen center)
41.5
124.5
207.5
235
441
367.5
3-2 Super Wide (PAL mode)
220.5
73.5
0
73.5
220.5
367.5
441
249.0
220.0
130.5
40
0
(pattern center)
-5
49.5
136.5
441
367.5
220.5
0
73.5
Caution: Do not perform the VLIN adjustment.
– 28 –
73.5
220.5
367.5
221.0
249.0
441
3-3 Cinema (PAL mode)
Note: The cursor will move outside the screen limits in the Cinema mode; theref ore, be careful to consider the position
of the cursor displayed on the screen when making adjustments.
262.5
227.5
157.5
52.5
0
52.5
157.5
227.5
262.5
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
441
367.5
220.5
73.5
0
73.5
220.5
367.5
441
3-4 Subtitle (PAL mode)
Note: The cursor will move outside the screen limits in the Subtitle mode; theref ore, be careful to consider the position
of the cursor displayed on the screen when making adjustments.
Note: Please be aware that the Subtitle screen convergence pattern center is located at the center of the screen but the
image center is located approximately 13mm above that.
272
240
144
48
0
48
144
Screen limit changed
441
367.5
220.5
73.5
0
– 29 –
73.5
220.5
367.5
240
272
441
3-5 WIDE/4:3 (NTSC mode)
231
198
99
(screen center)
0
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
3-6 Super Live (NTSC mode)
441
367.5
220.5
73.5
99
198
231
0
73.5
220.5
367.5
441
249
213
105
0
(pattern center)
-5
441
367.5
220.5
0
73.5
Caution: Do not perform the VLIN adjustment.
– 30 –
73.5
220.5
367.5
112
216
249
441
Loading...