REPLACEMENT OF THE CRT.................................................................................................................................9
SERVICE POSITION.............................................................................................................................................. 10
SERVICE MODE ....................................................................................................................................................11
LOCATION OF CONTROLS...................................................................................................................................27
CHASSIS AND CABINET REPLACEMENT PARTS LIST......................................................................................35
PC BOARDS BOTTOM VIEW.................................................................................................................................75
TERMINAL VIEW OF TRANSISTORS ................................................................................................................... 94
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 120V AC
power source. The high voltage must not, under any circumstances, exceed (B) kV.
Refer to table-1 for high voltage (A), (B).
(See SETTING & ADJUSTING DATA on page 26)
Each time a receiver requires servicing, the high voltage
should be checked f ollowing 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 any one unf amiliar with the necessary precautions on this receiver. The following are the necessary precautions to be observed before
servicing this chassis.
1. An isolation Transf ormer should be connected in the power
line between the receiver and the AC line bef ore 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; non-metallic control knobs, insulating covers,
shields, isolation resistor-capacitor network etc.
4. Before returning the set to the customer, always perform
an AC leakage current check on the exposed metallic parts
of the cabinet, such as antennas, terminals, screwheads,
metal overlays, control shafts etc. to be sure the set is
safe to operate without danger of electrical shock. Plug
the AC line cord directly into a 120V AC outlet (do not use
a line isolation transformer during this check). Use an AC
voltmeter having 5000 ohms per volt or more sensitivity in
the following manner:
PRODUCT SAFETY NOTICE
2. This receiver is equipped with a Fail Safe (FS) circuit which
prevents the receiver from producing an excessively high
voltage ev en if the B+ voltage increases abnormally. Each
time the receiver is serviced, the FS circuit must be checked
to determine that the circuit is properly functioning, following the FS CIRCUIT CHECK procedure in this manual.
3. 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.
4. 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.
Connect a 1500 ohm 10 watt resistor , paralleled b y a 0.15
µF, AC type capacitor, between a known good earth ground
(water pipe, conduit, etc.) and the exposed metallic parts,
one at a time. Measure the AC voltage across the combination of 1500 ohm resistor and 0.15 µF capacitor. Reverse the AC plug at the AC outlet and repeat AC voltage
measurements for each exposed metallic part. Voltage
measured must not exceed 0.3 volts rms. This corresponds
to 0.2 milliamp. AC. Any value exceeding this limit constitutes a potential shock hazard and must be corrected immediately.
AC VOLTMETER
0.15µF
Place this probe on
Good earth ground
such as a water
pipe, conduit, etc.
1500 ohm
each exposed
metallic part.
10 watt
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
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 b y using
replacement components rated for higher voltage, w attage, etc. Replacement parts which have these special saf ety 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
(See owner's manual)
2. R.G.B. FOCUS ADJUSTMENT (page 7.)
3. PICTURE TILT ADJUSTMENT (page 7.)
4. USER CONVERGENCE CENTER CHECK
(See owner's manual)
5. CENTERING ADJUSTMENT (page 7.)
6. CONVERGENCE ADJUSTMENT (page 18.)
7. WHITE BALANCE ADJUSTMENT (page 17.)
Adjustments are complete.
Anode Cap
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
Silicon
(On shaded area)
TSE3843W #23960136
2 ~ 5 mm
SERVICING PRECAUTIONS
■ Do not use a magnetized screw driver f or screws of
Deflection Yoke and V elocity Modulation Coil to av oid
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 v ariable
quantity .
Screw
for D.Y
15 ~ 25 mm
■ When replacing the anode cap assembly (CRT) or
anode lead assembly (F.B.T.), remo ve 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 coil
– 5 –
WARNING : BEFORE SERVICING THIS CHASSIS, READ THE “X-RAY RADIATION PRECA UTION”, “SAFETY PRECAUTION” AND “PRODUCT SAFETY NOTICE” ON PAGE 3 OF THIS MANUAL.
PICTURE TUBE COMPONENTS ADJUSTMENT
DESCRIPTION OF NECK COMPONENTS
2
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
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 hav e to be
used for center convergence adjustment.
PREPARATION
Operate the receiver for at least 5 minutes.
R, G, B CUTOFF (SCREEN VR) ADJUSTMENT
1. Adjust before replacing the SCREEN assembly.
2. Press RESET button on TV or remote hand set.
3. Call up the adjustment mode display, then adjust the
data of items RCUT, GCUT and BCUT to “40”.
4. Press TV (ANT)/VIDEO button on TV.
5. Gradually rotate R, G and B SCREEN volume of FOCUS PAC (page 8) clockwise or counterclockwise until the raster appears slightly on the CRT through the
each lens, and leave them.
(Look into the lens in order to check the raster.)
6. Press TV (ANT)/VIDEO button on TV again.
RGB ALIGNMENT & ASTIGMATISM ADJUSTMENT
1. Set the knobs of the pole 2, 4, 6 magnets of the SVM
coil so that their magnetic fields override each other.
Pole 6
1
Pole 4
Pole 2 magnet
Pole 4, 6 magnet
2. Enter the adjustment mode (see page 11).
3. Adjust the centering magnets for the RED, GREEN,
and BLUE colors. (See CENTERING ADJUSTMENT.)
4. Press the TV/VIDEO button on the remote controller
to display the internally-generated white cross dots.
(White cross dots on black backg round. Ref er to TEST
SIGNAL SELECTION on page 12.)
5. Adjust the alignment and astigmatism of the projection tube for RED. (See steps (1) to (6) below. Cover
the projection tubes for the other two colors with lens
caps, etc.)
(1) Slightly turn the focus VR of RED to the left.
(2) Adjust the pole 2 magnet so that the bright section of
the dot falls on the center of the dark section (flare).
Dark section (flare)
Bright section
(3) Readjust the centering magnets for the RED colors.
(4) Slightly turn the focus VR of RED to the right for the
sharp focus.
(5) Adjust the pole 4 magnet to the desired degree so that
the blurred dot becomes rectangular. (The shape
should become basically same when turning the focus VR to both the left and right.)
Pole 2
– 6 –
(6) Reconfirm that the alignment, astigmatism, and
centering are correct. If necessary, repeat the steps
(1) to (5) above to adjust appropriately.
SIGNAL SELECTION on page 12.)
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.
6. Adjust the electric focus of RED as well as possible.
(See RGB FOCUS ADJUSTMENT.)
7. Adjust the alignment and astigmatism of GREEN and
BLUE using the above procedure for adjusting RED.
R, G, B FOCUS ADJUSTMENT
1. Call-up the adjustment mode (see page 11)
2. Press TV/VIDEO button on the remote controller in
order to display the internally-generated white crossdot. (White cross-dot on a b lack background. See TEST
SIGNAL SELECTION on page 12.)
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 section 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 section 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 cov ering the RED and BLUE
lenses with caps.
9. Display the internally-generated white cross-dot signal.
10. Adjust the GREEN lens focus to obtain the sharpest
point while observing the middle section of the screen.
11. Press TV/VIDEO button on the remote controller in
order to display the internally-generated white crossbar. (White crossbar on a blac k background. See TEST
Note:Normally the most clearly visible point of the scan-
ning line is the sharpest point of the Green focus.
13. Check the GREEN focus of the whole screen and if
necessary repeat steps from 10 to 12.
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 TV/VIDEO button on the remote controller in
order to display the internally-generated white crossdot. (White cross-dot on a b lack background. See TEST
SIGNAL SELECTION on page 12.)
17. Loosen the BLUE lens fixing screws (refer to Fig. a),
and adjust the BLUE lens focus while observing the
middle screen section of the screen.
18. Press TV/VIDEO button on the remote controller in
order to display the internally-generated black crossdot. (Blac k cross-dot on a white background. See TEST
SIGNAL SELECTION on page 12.)
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, while the crossdot is clearly visible.)
Note: Keep in mind that only the BLUE electric focus is
adjusted with the black cross-dot.
20. Check the BLUE focus of the whole screen and if necessary repeat steps from 17 to 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
– 7 –
2. Select the adjustment mode, and adjust the data of
item “HPOS” to 45H.
3. Press TV/VIDEO button on the Remote Control to display the white cross-bar.
4. Adjust G centering magnet so that the cross-bar pattern center comes to screen center.
5. Perform HEIGHT adjustment . (See page 16.)
6. Perform VERT. LINEARITY adjustment.
7. Perform WIDTH adjustment. (See page 16.)
8. Check whole quality of green line.
9. Adjust R, B centering magnet so that the cross-bar
pattern center comes to screen center.
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
LOCATION OF SCREEN AND FOCUS VR’S
6 Screws
SCREEN VR
FOCUS VR
RGB
Speaker grille
– 8 –
REPLACEMENT OF THE CRT
Service parts are provided for each R, G and B.
The contents of the parts are as follows.
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 ne w lead. Do not throw awa y
Lead Holder.
NOTE : THE LEAD HOLDER IS ATTACHED TO
TP A5007 (Z450), BUT IS NO T A TTACHED T O
ANODE LEAD AND ANODE CAP. RUBBER
BOOT IS ATT A CHED T O ANODE LEAD AND
ANODE CAP.
2. Detaching Lead Holder
OLD
ANODE LEAD
or
ANODE CAP
LOCK
RUBBER BOOT
LEAD HOLDER
Fig. b
Cut here rubber boot
and lead together to
detach Lead Holder.
– 9 –
WARNING: BEFORE SERVICING THIS CHASSIS , READ THE "X-RAY RADIATION PRECAUTION", "SAFETY PRECAU-
TION" AND "PRODUCT SAFETY NOTICE" ON PAGE 3 OF THIS MANUAL.
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.
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
After repair work finished, replace it in the opposite procedure.
SERVICE POSITION
– 10 –
SERVICE MODE
1. ENTERING TO SERVICE MODE
1) Press CHANNEL t Button (on TV) and TV/SAT button (on TV) at the same time.
S
M
2. DISPLAYING THE ADJUSTMENT MENU
1) Press MENU button on Remote (or INFO button on TV).
Service mode
S
M
Press
Press
Adjustment 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:TV (ANT)/VIDEO button (on Remote)
Test signal selection :TV (ANT)/VIDEO button (on Remote)
Selection of the adjustment items :Channel s/t (on Remote)
Change of the data value :Volume s/t (on Remote)
Adjustment menu mode ON/OFF :MENU button (on Remote)
Initialization of the memory (QA02) :SUB TITLE + DVD ENTER (by DVD mode)
Initialization of the self diagnostic data:SET UP + DVD ENTER (by DVD mode)
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 26)
5. ADJUSTING THE DATA
1) Pressing of VOLUME s or t 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 INFO button on Remote.
■ INITIALIZATION OF MEMORY DATA OF QA02
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
After replacing QA02, the following initialization is required.
1. Enter the service mode, then move the slide switch to DVD mode on Remote.
2. Press SUB TITLE button on the Remote, then press the DVD ENTER button on the Remote. And power off and on temporary after disappear the indication "S" on the screen. The initialization of QA02 has been complated.
3. Check the picture carefully. If necessary, adjust any adjustment item above.
Perform “Programming Channel Memory” on owner's manual.
CAUTION: Never attempt to initialize the data unless QA02 has been replaced.
7. TEST SIGNAL SELECTION
1) Every pressing of TV/VIDEO button on the Remote Control in the Service mode, changes the built-in test patterns
on screen in the following order.
Normal picture
Red raster
Green raster
Blue raster
All black
All white
White and black
Black cross-bar
White cross-bar
Note: If the video cable is connected to the VIDEO1 INPUT jack, the
built-in pattern signals are not displayed.
White cross-dot
Black cross-dot
White cross-hatch
Black cross-hatch
SignalsPicture
• Red raster
• Green raster
• Blue raster
• All Black
• All White
• Black & White
• Black cross-bar
• White cross-bar
• Black cross-bar
on green raster
• Black cross-hatch
• White cross-hatch
• Black cross-dot
• White cross-dot
The signals marked with are not usable to display in the Test signal for some model.
*
– 12 –
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
2
3
4
5
1 Part number of microprocessor (QA01)
2 Operation number of protection circuit (current limiter) . . . . “000” is normal.
3 BUS line check“OK” ................... Normal
4 BUS line ACK (acknowledge) check
5 Sync. signal checkGreen display..... Normal
NO. 23XXXXXX
POWER : 000
BUS LINE : OK
BUS CONT : OK
BLOCK : UV V1 V2
or QV01 QV01S
SYNC
“SCL-GND” or “NG” ........... SCL-GND short circuit
“SDA-GND” or “NG” ........... SDA-GND short circuit
“SCL-SDA” or “NG” ............ SCL-SDA short circuit
“OK” ..................... Normal
Display of Location Number . . . . NG
(Display example)
“QA02 NG”, “H001 NG”, “Q501 NG” etc.
Note: The indication of failure place is only one place though failure places are plural. When repair
of a failure place finishes, the ne xt failure place is indicated. (The order of priority of indication
is left side.)
Cyan display ......No check
Red display ........ NG
UV........... TV mode
V1............ VIDEO 1 mode
V2............ VIDEO 2 mode
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
The item marked with are not usable to display in the SELF DIAGNOSTIC FUNCTION for some model.
*
– 13 –
1. ENTERING TO DESIGN MODE
1) Select the Service mode.
DESIGN MODE
2) Press DVD TITLE and ENTER button on
Remote by DVD mode.
3) Press MENU button on Remote.
When QA02 is initialized, items “OPT0” and “OPT1” of DESIGN MODE are set to the data of the representative model of this
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
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 table-3.
(s button for reverse order)
Refer to table-3 for data of design mode.
(See SETTING & ADJUSTING DATA on page 26)
3. ADJUSTING THE DATA
Pressing of VOLUME s or t button will change the value of data.
SD
(Design mode)(Adjustment mode)
Press
Press
ITEM
DATA
– 14 –
STANDARS
ADJUSTMENT
31.0±0.2kV
ELECTRICAL ADJUSTMENT
33.75±
0.15kHz
A=0.76±0.1[µs]
ADJUSTING METHODS
voltage meter between T461-Z450
and adjust high pressure with R466.
1) Perform connection of the high
High voltage
meter
Between
T461-Z450
1) Short-circuit test pin (H) and (+9V).
2) Adjust fH with R4055.
Frequency counter
Between
R431-GND
the lowest line on the synchroscope.
1) Adjust DC=0 of both wave forms to
Synchroscope
D441-K
(2V/div range)
points and make adjustments with the
2) Take measurement of 3 div.
3) Observe the wave forms at the two
R4011-BB50 side
(1V/div range)
D441 cathode wave form
BB connector side wave
form of R4011
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
HPOS.
A
3div
0
INPUTMEASURINGMEASURING
SIGNALSPOINTSINSTRUMENTS
Retoma signal
CONTRAST:MAX
BRIGHTNESS :CNT
ITEMSNAMESSETTING
adjustment
High voltage
COLOUR:CNT
TINT:CNT
(Unit)
• Retoma signal
CNTRAST:MAX
BRIGHTNESS :CNT
COLOUR:CNT
Horizontal
oscillation
frequency
fH. ADJ.
(Chassis)
Retoma signal
TINT:CNT
CONTRAST:MAX
BRIGHTNESS :CNT
Horizontal
phase
HPOS
(Chassis)
COLOUR:CNT
TINT:CNT
– 15 –
ITEMADJUSTMENT PROCEDURE
SUB-BRIGHTNESS
(BRTC)
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
SUB-COLOR
(SCOL)
SUB-TINT
(TNTC)
PICTURE POSITION
HEIGHT
WIDTH
VERT. LINEARITY
(Service mode data)
1. Constrict the picture height until the verti-
cal retrace line appears adjusting the
HEIGHT control on the MAIN board.
2. Adjust the CONTRAST to the minimum.
3. Enter the service mode, then select
“BRTC” register.
4. Adjust the data value so the belt of verti-
cal retrace line just disappear.
5. Adjust the CONTRAST for the desired
contrast.
6. Adjust the HEIGHT control.
Vertical retrace line
1. Receive color-bar signal from color-bar generator.
2. Adjust the BRIGHTNESS and CONTRAST to the center (RESET status).
3. Connect oscilloscope to TP50 on the MAIN board.
4. Enter the service mode, then select “SCOL”.
5. Temporarily adjust the data value to achieve about 1V
6. Select “TNTC” register.
7. Adjust the data value to obtain the blue
bar to magenta bar ratio of 3:2 as shown.
8. Select “SCOL” register .
9. Adjust the data value to achieve 1.8V
of blue bar on scope.
10. Check the picture with off-air signal.
Magenta
0-p
0
0-p of blue bar.
Blue
Adjust the Service mode data: Refer to table-2 on page 26.
2
3 (1.8V
0-P
)
– 16 –
ITEMADJUSTMENT PROCEDURE
WHITE BALANCE
(RCUT)
(BCUT)
(RDRV)
(BDRV)
1. Press RESET button on TV or remote hand set.
2. Don’t put any signal in Video 1 jack.
3. Call up the adjustment mode display, then adjust the data of items RCUT, GCUT
and BCUT to “40”.
4. Press TV (ANT)/VIDEO button on TV.
5. Gradually rotate R, G and B SCREEN volume of FOCUS PAC (page 8) cloc kwise
or counterclockwise until the raster appears slightly on the CRT through the each
lens, and leave them.
(Look into the lens in order to check the raster.)
6. Press TV (ANT)/VIDEO button on TV again.
7. Exit from service mode, and adjust the contrast to the minimum and brightness to
the maximum.
8. Call up the adjustment mode and press the TV (ANT)/VIDEO button on Remote
until the Black & White pattern appears on the screen.
9. Adjust the data of items RCUT and BCUT for low light area.
10. Adjust the data of items RDRV and BDRV Controls for proper white-balanced
picture in high light area.
11. Check the white balance in both low and high light areas. If necessary, perform
again steps from 9 to 10.
High light area
Adjust "RDRV" or "BDRV" to be white.
Low light area
Fine adjust "RCUT" or "BCUT" to be black.
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
– 17 –
CONVERGENCE ADJUSTMENT
Adjust convergence from center to circumference in order.
1. Select the adjustment mode following the steps on page 11.
KEY FUNCTION IN THE
CONVERGENCE ADJUSTMENT:
RCUT
40H
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
Up :2 button
Selet Green color:3 button
Left :4 button
Blinking of cursor ON/OFF: 5 button
Right:6 button
Adjust mode ON/OFF:7 button
Down:8 button
Erase Green line:0 button
Erase Red line:100 button
Erase Blue line:ENT button
Note:
Adjusting procedure in replacing convergence board.
1. User convergence center check. Make
sure the best convergence setting is
about the center of adjustable range.
2. CENTERING ADJUSTMENT
3. PICTURE POSITION ADJUSTMENT
4. HIT, WID ADJUSTMENT
5. CONVERGENCE ADJUSTMENT
2. Press “7” button to display the built-in cross-hatch pattern.
Cursor
X: I
Y: I
FULL
C: R
FULL
3. Press PIC-SIZE button to select the FULL mode.
FULL
WIDE1WIDE2
The pattern includes three colors (R, G, B).
The cursor should be blinking in Red.
This means that the Red color is adjustable.
Adjustment around cursor can be done.
4. Press “3” button to select Green color to be adjusted.
5. Press “5” button to stop the blinking of cursor.
6. Press “2 (up)”, “8 (down)”, “4 (left)” or “6 (right)” to obtain the correct
cross-hatch pattern as above.
If necessary, the specified color line can be erased from the screen.
100 button .................. to erase Red line
0 button .................. to erase Green line
ENT button .................. to erase Blue line
7. Press “5” button to make the cursor blinking.
8. Press “2”, “8”, “4”, “6” buttons to move the cursor to other point to be
adjusted.
9. Repeat steps 5 to 8.
10. Repeat steps 4 to 9 to adjust Red and Blue colors.
Converge the selected color line into the Green line.
11. Press “7” button to enter the adjusted states.
At this time, picture changes for about 1 second.
12. Repeat steps 3 to 12 for WIDE mode.
13. Press “7” button again to return to the normal picture.
– 18 –
Adjusting Dimension of Each Picture Screen (65")
65 inches 16:9 screen size:
• Horizontal1442 mm
• Vertical810 mm
(1) FULL/WIDE2
7
714
595
357
119
339.5
291.0
145.5
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
0
145.5
291.0
339.5
V. SPAN 48.5 mm
119
0
357
595
H. SPAN 119 mm
714
(2) WIDE1
7.0
714.0
584.0
337.5
110.0
341.0
293.0
143.0
0
-7.0
Pattern center
152.0
295.0
342.0
110.0
0
337.5
584.0
714.0
– 19 –
(3) 525P (STANDARD)
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
184
537
447.5
268.5
89.5
184
339.5
291.0
145.5
0
145.5
291.0
339.5
0
89.5
268.5
447.5
537
V. SPAN 48.5 mm
H. SPAN 89.5 mm
– 20 –
ADJUSTING DIMENSION OF EACH PICTURE SCREEN (56")
16:9 screen size:
• Horizontal1240 mm
• V ertical700 mm
1. FULL/WIDE2
2. WIDE1
293.5
251.5
125.5
0
125.5
251.5
293.5
6
614614
511.5
307
102.3
0
102.3
307
511.5
V. SPAN 41.9 mm
H. SPAN 102.3 mm
614
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
6.0
614.0
502.0
290.0
94.5
294.5
253.0
123.5
0
-6
Pattern center
131.5
255.0
295.5
V. SPAN
0
94.5
290.0
502.0
614.0
H. SPAN
**
**
mm
mm
– 21 –
3. 525P (STANDARD)
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
158
462
385
231
158
293.5
251.5
125.5
0
125.5
251.5
293.5
0
77
77
231
385
462
V. SPAN 41.9 mm
H. SPAN 77 mm
– 22 –
NOTES
In many cases, color misconvergence may be corrected by returning HIT and WID data to initial adjusting values.
Following cases will surely require readjustment of convergence.
REPLACING CONVERGENCE UNIT
When replacing convergence unit, all picture screens require readjustment basically, but the follo wing method allows process be
reduced considerably.
1. Replace the memory (QH174, QH173) on defective unit with memory on new unit. Mounting the unit on the SET after the
above working realizes picture screen before replacement immediately.
2. Mount unit which has combination of old and new memories, on SET and turn it on. Screen shows whole picture looks like
straightly shifted towards vertical or horizontal direction.
3. Adjust again centers of green, red and blue with centering magnets.
4. Check each picture screen for slight disparity of color and picture size. If necessary, add some adjustments of main deflection and color matching of convergence.
CRT REPLACEMENT
When CRT is replaced, main deflection readjustment and color matching are required.
Perform following procedures.
1. Replace two CRT’s of blue and red.
2. Perform horizontal adjustment for blue and red yokes on base of green CR T data. Mount yoke and velocity mod. coil alignment, pushing towards CRT without gap.
3. Adjust alignment of blue and red. (Refer Alignment adjustment for details.)
4. Rotating centering magnet, adjust CRT centers of red and blue to CRT center of green.
(Center adjustment)
5. Adjust HIT and WID data of main deflection, and decide data at the most precise screen comparing to green data.
6. Adjust convergence of each screen picture for color matching. Do not move green one at this time.
7. After convergence adjustment of each screen picture finishes, replace green CRT.
For green CRT as well, repeat steps 3 to 6 above on bases of red and blue color matching to adjust convergence.
8. If it is need the adjustment of green, keep the specified dimensions.
When adjust the whole picture screen size, adjust the HEIGHT (HIT) and WIDTH (WID) in the ELECTRICAL ADJUSTMENT.
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
– 23 –
SPACER x2
SCREEN AND MIRROR ALIGNMENTS
SPACER x2
INSIDE
0 to 1 mm
GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS
K503 FRONT PANEL
LENTICULAR
<OUTSIDE>
SMOOTH
K501
BLACK STRIPES
K502
FRESNAL
<INSIDE>
SMOOTH
OUT SIDE
BLACK STRIPES
SPACER
FRONT PANEL
LENTICULAR
FRESNEL
LENS
A260
PIECE
BEZEL x2
FRESNEL
LENTICULAR
FRONT PANEL
BEZEL x2
SMOOTH
INSERT
A260
INSERT
A260 PIECE
A260
PIECE
CAUTION : Do not hold the optical system parts (lens and
mirror) with bare hand to avoid finger-prints on
the surface of those parts.
HOW TO CLEAN LENS AND MIRROR
1. Be sure to remove sand dust with an air brush, etc.
2. When it is stained slightly , breathe upon it and wipe awa y
with the specified cleaning cloth.
For other stains than the above, wipe the stains away
with the specified cloth into which a cleaning liquid has
been soaked.
The Fail Safe (FS) circuit check is indispensable for the final
check in servicing. Checking should be done following the
steps below.
1. Turn the receiver on.
2. Temporarily short TP-R-1 and TP-X-1 on the DEF Board
with a jumper wire.
Raster and sound will disappear.
3. The receiver must remain in this state ev en after removing
the jumper wire. This is the evidence that the FS circuit is
functioning properly.
4. To obtain a picture again, temporarily turn the receiver off
and allow the FS circuit more than 5 seconds to reset. Then
turn the receiver on to produce a normal picture.