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FILE NO. 010-200106
SERVICE MANUAL
COLOUR TELEVISION
F1DS Chassis
29AX9UM
Sep., 2001
TABLE OF CONTENTS
CHAPTER 1 GENERAL ADJUSTMENTS
GENERAL ADJUSTMENTS
SAFETY INSTRUCTIONS ........................................................................................................................................ 3
SET-UP ADJUSTMENT ............................................................................................................................................ 4
SERVICE MODE ...................................................................................................................................................... 8
DESIGN MODE ...................................................................................................................................................... 11
ELECTRICAL ADJUSTMENTS .............................................................................................................................. 12
CIRCUIT CHECK .................................................................................................................................................... 17
CHAPTER 2 SPECIFIC INFORMATIONS
SETTING & ADJUSTING DATA .............................................................................................................................. 18
SPECIFIC INFORMATIONS
LOCATION OF CONTROLS ................................................................................................................................... 19
PROGRAMMING CHANNEL MEMORY ................................................................................................................. 21
CIRCUIT BLOCK DIAGRAM .................................................................................................................................. 23
CHASSIS AND REPLACEMENT PARTS LIST ...................................................................................................... 24
PC BOARDS BOTTOM VIEW ................................................................................................................................. 39
TERMINAL VIEW OF TRANSISTORS ................................................................................................................... 50
SPECIFICATIONS .................................................................................................................................................. 51
APPENDIX:
CIRCUIT DIAGRAM
2
CHAPTER 1 GENERAL ADJUSTMENTS
SAFETY INSTRUCTIONS
GENERAL ADJUSTMENTS
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 hazard- 2. The only source of X-RAY RADIATION in this TV receiver
ous X-RAY RADIATION. To avoid such hazards, the high is the picture tube. For continued X-RAY RADIATION pro-
voltage must not be above the specified limit. The nominal tection, the replacement tube must be exactly the same
value of the high voltage of this receiver is (A) kV at zero type tube as specified in the parts list.
beam current (minimum brightness) under a (C) V AC power 3. Some part in this receiver have special safety-related char-
source. The high voltage must not, under any circum- acteristics for X-RAY RADIATION protection. For contin-
stances, exceed (B) kV. ued safety, parts replacement should be undertaken only
Refer to table-1 for high voltage (A), (B) & AC voltage (C). after referring to the PRODUCT SAFETY NOTICE below.
SPECIFIC INFORMATIONS
(See SETTING & ADJUSTING DATA on page 18)
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 read-
ing 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; non-
metallic control knobs, insulating covers, shields, isolation resistor-capacitor network etc.
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 char-
acteristics 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
WARNING: BEFORE SERVICING THIS CHASSIS, READ THE "X-RAY RADIATION PRECAUTION", "SAFETY PRECAU-
TION" AND "PRODUCT SAFETY NOTICE" ON PAGE 3 OF THIS MANUAL.
GENERAL ADJUSTMENTS
SET-UP ADJUSTMENT
s The following adjustments should be made when a complete realignment is required or a new picture tube is installed.
Perform the adjustments in order as follows :
1. Color Purity
2. Convergence
3. White Balance
Note: 1. The PURITY/CONVERGENCE MAGNET assembly and rubber wedges need mechanical positioning.
Refer to figure 1.
2. Mounting position of the purity magnet assembly should fit to same position as old one because slightly difference
to the position depend on a kind of tube.
* There are no adjustment of purity and convergence in some picture tube (Unified with purity magnet)
SPECIFIC INFORMATIONS
COLOR PURITY ADJUSTMENT
NOTE : Before attempting any purity adjustments, the receiver 5. Remove the Rubber Wedges.
should be operated for at least fifteen minutes. 6. Rotate and spread the tabs of the purity magnet (See fig-
1. Demagnetize the picture tube and cabinet using a degauss- ure 2.) around the neck of the picture tube until the green
ing coil. belt is in the center of the screen. At the same time, enter
2. Set the brightness and contrast to maximum. the raster vertically.
3. Use a green raster from among the built-in test signals. 7. Slowly move the yoke forward or backward until a uniform
4. Loosen the clamp screw holding the yoke and slide the green screen is obtained. Tighten the clamp screw of the
yoke backward or forward to provide vertical green belt yoke temporarily.
(zone) in the picture screen. 8. Check the purity of the red and blue raster.
TEMPORARY
DEFLECTION MOUNTING
YOKE
29.1mm(28", 29")
25mm(25")
19mm(19", 20", 21")
14mm(13", 14")
RUBBER WEDGE
ADHESIVE
PURITY/
CONVERGENCE DEFLECTION
MAGNET ASS'Y YOKE
GLASS CLOTH
TAPES
Figure 1.
4
CONVERGENCE ADJUSTMENTS s CIRCUMFERENCE CONVERGENCE ADJUSTMENT
NOTE: Before attempting any convergence adjustments, the 1. Loosen the clamping screw of deflection yoke slightly to
receiver should be operated for at least fifteen min- allow the yoke to tilt.
utes. 2. Temporarily put a wedge as shown in figure 1. (Do not
GENERAL ADJUSTMENTS
remove cover paper on adhesive part of the wedge.)
s CENTER CONVERGENCE ADJUSTMENT 3. Tilt front of the deflection yoke up or down to obtain better
1. Use the cross-dot pattern from among the built-in test sig- convergence in circumference. (See figure 3.) Push the
nals. mounted wedge into the space between picture tube and
2. Set the brightness and contrast for well defined pattern. the yoke to fix the yoke temporarily.
3. Adjust two tabs of the 4-Pole Magnets to change the an- 4. Put other wedge into bottom space and remove the cover
gle between them (See figure 2.) and superimpose red paper to stick.
and blue vertical lines in the center area of the picture 5. Tilt front of the yoke right or left to obtain better conver-
screen. gence in circumference. (See figure 3.)
4. Turn the both tabs at the same time keeping the angle 6. Keep the yoke position and put another wedge in either
constant to superimpose red and blue horizontal lines at upper space. Remove cover paper and stick the wedge
the center of the screen. on picture tube to fix the yoke.
5. Adjust two tabs of 6-Pole Magnets to superimpose red/ 7. Detach the temporarily mounted wedge and put it in an-
blue line and green one. Adjusting the angle affects the other upper space. Stick it on picture tube to fix the yoke.
vertical lines and rotating both magnets affects the hori- 8. After fixing three wedges, recheck overall convergence.
Tighten the screw firmly to fix the yoke and check the yoke
SPECIFIC INFORMATIONS
zontal lines.
6. Repeat adjustments 3, 4, 5 keeping in mind red, green is firm.
and blue movement, because 4-Pole Magnets and 6-Pole 9. Stick three adhesive tapes on wedges as shown in figure
Magnets have mutual interaction and make dot movement 1.
complex.
6-POLE
MAGNETS
4-POLE ADJUST THE ANGLE
(VERTICAL LINES) FIXED
MAGNETS
ROTATE TWO TABS
AT THE SAME TIME
(HORIZONTAL LINES)
PURITY
MAGNETS
CONVERGENCE MAGNET ASSEMBLY ADJUSTMENT OF MAGNETS
Figure 2.
BLU RED RED/BLU GRN
BLU RED/BLU
RED GRN
4-POLE MAGNETS MOVEMENT 6-POLE MAGNETS MOVEMENT
Center Convergence by Convergence Magnets
BGR
B
G
R RGB
R B
G G
B R
BGR
R
G
RGB B
INCLINE THE YOKE UP (OR DOWN) INCLINE THE YOKE RIGHT (OR LEFT)
Circumference Convergence by DEF Yoke
Figure 3. Dot Movement Pattern
5
WARNING: BEFORE SERVICING THIS CHASSIS, READ THE "X-RAY RADIATION PRECAUTION", "SAFETY PRECAU-
TION" AND "PRODUCT SAFETY NOTICE" ON PAGE 3 OF SERVICE MANUAL.
GENERAL ADJUSTMENTS
SET-UP ADJUSTMENT (FOR FLAT TUBE)
s The following adjustments should be made when a complete realignment is required or a new picture tube is installed.
Perform the adjustments in order as follows :
1. Color Purity
2. Convergence
3. White Balance
Note: The PURITY/CONVERGENCE MAGNET assembly and rubber wedges need mechanical positioning.
Refer to figure 1.
COLOR PURITY ADUSTMENT
(1)Let the screen face in the installing direction or toward the east (when it is to be moved), bring up the service mode
screen after demagnetizing (front, left, right, and top) with the degaussing coil, receive white signals by pressing the
[TV/VIDEO] button, and then the receiver should be operated for more than 40 minutes.
(2)Perform rough adjustment of the central convergence with the P/C magnet according to the adjustment item.
SPECIFIC INFORMATIONS
(3)Receive built-in green signals, loosen set screws on the deflection yoke, remove rubber wedges, and shift the deflection
yoke to toward front.
(4)Move alternately the two 2-pole magnets of the P/C magnets so that the green raster can come to the center of the
screen.
Figure 1.
2-pole purity magnet Main 4-pole convergence magnet (30" : 32")
(27": Magnet is fixed with deflection yoke.) 6-pole convergence magnet (34")
6-pole convergence magnet (30" : 32")
Main 4-pole convergence magnet (34")
P/C magnet installing position A
Green Belt · 30"=26.5 mm
· 32"=30.5 mm or 32.5 mm
A
· 34"=37 mm
· 34"=39 mm
Sub-4-pole convergence magnet (32" : 34")
Sub-4-pole convergence magnet (to be installed on deflection yoke for 30", 32")
(5)Receive built-in red and blue signals, check that there is no inclination of the single color raster toward one side, and if
each color tilts to a great extent, make adjustment with the 2-pole magnet so that the 3 colors will come to the center
evenly. Shift deflection yoke
(6)Receive the green raster, shift the deflection yoke from a (6) (7) Perform marking of each point
foremost position (hitting against the picture tube) to a (8) on the tape of picture tube
backward position horizontally, stop the deflection yoke
at a position where it begins to become a green raster,
and perform accurate marking on the picture tube.
Picture tube CRT-D board
(7)Shift the deflection yoke further backward, and perform
accurate marking at a position where the green raster
begins to being luck.
P/C Mag
(8)Fix the deflection yoke at a position 60% forward within 100 60 0%
the range marked in items (6) and (7) above.
Fix the deflection yoke at a position 60% forward from a
CONVERGENCE ADJUSTMENTS point between (6) and (7)
* Adjust the convergence magnet to get vest convergence in the the order to (1) ~ (5).
s CENTER CONVERGENCE:
(1)Receive the white crosshatch or dot pattern from the service signal generator.
(2)Use the 2 pieces of main 4-pole magnets of P/C magnets, change the open angle, and align the red and blue vertical
lines on the screen center.
(3)Freeze the open angle of the main 4-pole magnets, turn them simultaneously, and align the horizontal lines.
(4)Take the same steps for items (2) and (3) above and align red/blue with green on the screen center using two 6-pole
magnets.
6
(5)Adjust the sub-4-pole magnets only in case there is any deviation of Xv bow-shaped convergence. (To be usually set at
the initial position)
Align both sides with the sub-4-pole magnets and minimize the deviation of blue and red with the main 4-pole magnets.
GENERAL ADJUSTMENTS
red/blue Xv bow-shaped deviation of convergence
blue
red/blue
blue blue
red green
red
red green
Main 4-pole magnet 6-pole magnet Sub-4-pole magnet
s CIRCUMFERENCE CONVERGENCE:
* Perform correction in the following manner.
· Adjust coils and minimize deviation
(The 27" unit has coils underneath it)
SPECIFIC INFORMATIONS
blue
green
red
A D A D
(Insertion position of correction
piece) D A
blue blue
B green E E B B green E
red red
F C
C F C F
(Parts code:23 948 274) TC-S *Insert the correction piece between the (Parts code:23 948 464)
S picture tube and the deflection yoke. N
N S
Bonded surface Bonded surface
Blue color or blue mark Transparent
Adjust VR 1 and minimize the deviation of YH. *Only 27", 30" and 32".
green green s 30", 27", 32"
Red blue blue Red
VR3 VR2 VR1
Red blue blue Red
green green
Adjust VR 2 (YHC) and minimize the deviation of YH.
green green
Red blue blue Red
s 34"
blue Red Red blue
green green
Adjust VR 3 (YV) and minimize the deviation of YV.
YV YHC
Red blue
green green
blue Red
27" (Part No. 23 947 371)
blue Red
green green
32", 30" (Part No. 23 947 121)
Red blue 34" (Part No. 23 993 080)
Perform correction by inserting the
green
green
green
green
G H
blue
blue
blue
blue
Red
Red
red
red
G H correction piece into the clear-
ance of terminal board coils of
the deflection yoke.
Note:
Perform insertion by turning the
metal side to the terminal board
side of the deflection yoke.
7
SERVICE MODE
1. ENTERING TO SERVICE MODE
GENERAL ADJUSTMENTS
1) Press o button once on 2) Press o button again to 3) While pressing the o button,
Remote Control. keep pressing. press MENU button on TV set.
Item S
Data
(or SOUND MUTE)
(Service mode display)
2. DISPLAYING THE ADJUSTMENT MENU
1) Press MENU button on TV.
Service mode Adjustment mode
SPECIFIC INFORMATIONS
Item
Press Data
S
Press
3. KEY FUNCTION IN THE SERVICE MODE
The following key entry during display of adjustment menu provides special functions.
A single horizontal line ON/OFF: - / - - button (on Remote) or a button (on TV)
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
"CNTX" (or "SCNT") selection : 4 button
"COLC" selection : 5 button Color thickness correction
"TNTC" selection : 6 button note: Displayed differently as shown below, de-
Test audio signal ON/OFF (1kHz) : 8 button pending on the setting of the receiving color
Self diagnostic display ON/OFF : 9 button system.
COLP (PAL)
COLC (NTSC)
COLS (SECAM)
CAUTION : Never try to perform initialization unless you have changed the memory IC.
8
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)
GENERAL ADJUSTMENTS
Refer to table-2 for preset data of adjustment mode.
(See SETTING & ADJUSTING DATA on page 18)
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.
s 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.
SPECIFIC INFORMATIONS
3. Check the picture carefully. If necessary, adjust any adjustment item above.
Perform "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
* The signals marked with are not usable to display in the Test signal for some model.
9
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.
GENERAL ADJUSTMENTS
Indicated color of mode now selected : Green and Red
Indicated color of other modes : White
23****** Green : Normal
POWER : 00 Red : The microcomputer operates to provide judgement
BUS LINE : OK of no video signal. The red color is still indicated
B U S CONT : OK though the signal is input, failure may exist in input
BLOCK : UV V1 V2 signal line including QV01.
QV01
QV01 : In case of indication green ---Normal
In case of indication red with input signal----
Failure may exist in output line including QV01.
NOTE: Component which controls character display on
Part number of microcomputer (QA01)
screen is QT01 (TELETEXT IC.). If this display
SPECIFIC INFORMATIONS
Operation number of protecting circuit ----"00" is nor-
function fails to operate due to damage in QT01,
mal.
self diagnosis procedure is as follows.
When indication is other than "00", overcurrent apts to
(1) In case that power indicator is blinking with
flow, and circuit parts may possibly be damaged.
interval of 0.5 seconds; it means protecting
BUS LINE CHECK ----"OK" is normal.
circuit (Current limiter) is operating, and cir-
"SDA1-GND" ------------- SDA-GND short circuit.
cuit components may possibly be damaged.
"SCL1-GND" -------------- SCL-GND short circuit.
Check related components.
"SCL1-SDA1" ------------- SCL-SDA short circuit.
(2) In case that power indicator is blinking with
BUS CONT ----"OK" is normal.
interval of 1 second; Protecting circuit does
When indication shows "Q uuu NG", the device with
not operate, but a part of Bus line does not
the number may possibly be damaged.
operate normally. Check Bus line.
BLOCK
UV : TV reception mode
V1 : VIDEO 1 input mode (a1)
V2 : VIDEO 2 input mode (a2)
* The items marked with are not usable to display in the SELF DIAGNOSTIC FUNCTION for some model.
10
DESIGN MODE
1. ENTERING TO DESIGN MODE
GENERAL ADJUSTMENTS
1) Select the Service mode. 2) While pressing o(or CALL) button on 3) Press MENU button on TV.
Remote and press MENU button on TV.
S D Press ITEM
DATA
Press
(Design mode) (Adjustment mode)
When QA02 is initialized, items "OPT0", "OPT1", "OPT2" and "OPT3" 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", "OPT1", "OPT2" and "OPT3".
SPECIFIC INFORMATIONS
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 18)
3. ADJUSTING THE DATA
Pressing of VOLUME s or t button will change the value of data.
11
ELECTRICAL ADJUSTMENTS
GENERAL ADJUSTMENTS
ITEM ADJUSTMENT PROCEDURE
FOCUS VR ADJ 1. Enter the service mode, then select any register item.
2. Press the TV/VIDEO button on the Remote until the black cross-bar pattern ap-
pears on the screen.
3. Adjust the FOCUS control (on T461) for well defined scanning lines on the picture
screen.
SUB-BRIGHTNESS 1. Set CONTRAST to minimum, and
(BRTC) BRIGHTNESS to center by adjusting user
controls.
Note: Constrict the picture height 2. Set the TV in service mode to get Black
until the vertical retrace line cross-bar of inside pattern.
appears adjusting the item 3. Select BRTC (brightness correction), and
HIT (HEIGHT). adjust the ; /+ button to reduce the
value so that white portion of inside pat-
SPECIFIC INFORMATIONS
tern slightly light.
4. Adjust ; /+ button to increase the data
value of BRTC, and set it just before the
difference between the belt of vertical re-
trace and the border of black portion of Belt of vertical retrace
inside pattern is visible.
After that, return vertical height and con-
trast.
HORIZONTAL POSITION 1. Set the TV in service mode, and get
ADJUSTMENT (HPOS) black cross-bar signal with VIDEO
button on remote hand unit.
2. Select either HPOS (Horizontal pic-
VERTICAL POSITION ture phase) or VPOS (Vertical picture
ADJUSTMENT (VPOS) phase) with CHANNEL s, t buttons,
and adjust horizontal or vertical pic-
ture position in the center of screen
with VOLUME ; /+ buttons.
VERTICAL AMPLITUDE 1. Set the TV in service mode, and get
ADJUSTMENT (HIT) black cross-hatch signal with VIDEO
button on remote hand unit.
2. Select HIT (Vertical amplitude) with The first
CHANNEL s, t buttons, and adjust
vertical amplitude with VOLUME
; /+ buttons so that vertical am-
plitude lacks a little.
3. Adjust vertical amplitude with VOL-
UME ; /+ buttons so that the first
bar on cross-hatch signal touches
edge of screen.
12
ITEM ADJUSTMENT PROCEDURE
WIDTH 1. Call up the adjustment mode display, then select the item WID.
GENERAL ADJUSTMENTS
(WID) 2. Press the ; /+ button to get the picture so the left and rightedges of raster
begins to lack.
3. Press the ; /+ button to advance the data by 7 steps.
Note : Check the horizontal picture position is correct.
E-W PARABOLA 1. Call up the adjustment mode display, then select the item PARA.
(PARA) 2. Press the a button on Remote until the cross-hatch pattern appears on the screen.
3. Press the ; /+ button to make vertical lines straight as shown below.
SPECIFIC INFORMATIONS
WHITE BALANCE 1. Set Contrast to 40, and brightness to +20 by picture control.
ADJUSTMENT 2. Receive the Black and White pattern.
3. Select RCUT, GCUT and BCUT with CHANNEL s, t buttons, to set individual
· CUTOFF ADJUSTMENT
(RCUT)
values to Initial reference data, and to set GDRV and BDRV to Initial reference
data with VOLUME ; /+ buttons (See page 18).
(GCUT) 4. Press -/- - button on the remote control and rotate Screen VR to get one slight
(BCUT) horizontal line on screen.
Note: Every pressing of -/- - button provides Horizontal line picture and Normal
· DRIVE ADJUSTMENT
(GDRV)
picture alternately.
5. Press -/- - button to release horizontal line picture, and select the two other colors
(BDRV) which did not light in the above step with CHANNEL s, t buttons. Then tap VOL-
UME ; /+ buttons so that three colors slightly light in the same level.
X To correct white balance in light area, Light area check
select GDRV and BDRV with CHANNEL (to show white)
s, t buttons to adjust.
X To correct white balance in dark area,
perform fine adjustment of RCUT, GCUT
and BCUT.
Dark area check
(to show black)
13
F1DS Series (Reference factory adjustment)
Items Settings Input signals Measuring Adjusting Measuring Adjusting methods Adjust-
methods methods instruments ing
GENERAL ADJUSTMENTS
SCNT Sub-contract Contrast: MAX Sub-bright TP46R Synchro 1 If SCNT is selected, Y signal 2.4V(P-P)
Bright: CNT signal is transmitted from the ±0.2V(P-P)
Color: CNT (J2CH) monitor output.
Taint: CNT 2 Adjust the amplitude from
pedestal level to white level.
BRTC Sub-bright Contrast: MAX Sub-bright Screen Screen 1 Adjust the number of col- 4 lines±
center Bright: CNT signal adjust- adjustment lapsed black lines of the sub- 1.5 lines
Color: MIN (J2CH) ment bright signal.
2 Adjust after adjusting W/B,
SCNT.
COLC Sub color Contrast: MAX Sub-bright TP46B Synchro 1 If COLC is selected, B-Y 1.40V(P-P)
NTSC Bright: CNT signal signals are transmitted from ±0.2V(P-P)
Color: CNT (J 2CH) the monitor output. * P-P
Taint: CNT 2 Adjust the amplitude of the value of
SPECIFIC INFORMATIONS
Y mute: ON color bar output. upper
3 Adjust after adjusting SCNT, half
TNTC.
COLS Sub-color Contrast: MAX SECAM TP46B Synchro 1 If COLS is selected, B-Y 1.90V(P-P)
SECAM Bright: CNT Color bar signals are transmitted from ±0.2(P-P)
Color: CNT (E 2ch) the monitor output. * P-P
Taint: CNT 2 Adjust the amplitude of the value of
Y mute: ON color bar. upper
3 Adjust after adjusting SCNT. half
R CUT R cutoff Set to Screen Screen 1 Carry out the setting as the
G CUT G cutoff R CUT: 40H adjust- judgment condition mentioned on the
B CUT B cutoff G CUT: 40H ment left.
Screen B CUT: 40H 2 Gradually increase the screen
VR VR and stop it at a position
Enter horizon- where any line of R, G, or B
tal straight-line begins to emit light slightly.
mode 3 This position right here will be
set for screen VR adjustment.
4 Gradually increase remaining
two screen VRs except the
line that emitted slight light as
mentioned in item 2 above
and stop at positions where
respective lines begin to emit
light slightly. (Make adjust-
ment until the screen be-
comes virtually white.)
R CUT White balance Contrast: MAX Raster sig- C·P·T W/B 1 Carry out RCUT, GCUT, BCUT, HIGH
G CUT R cutoff Bright: CNT nal without checker and Screen VR after checking (103cd/m2)
B CUT G cutoff Color: MIN color burst above-mentioned items 11500k +
GDRV B cutoff 2 Carry out the setting of GDRV 0.0075uv
BDRV G drive Set to and BDRV like the condition DARK
B drive GDRV: 40H mentioned on the left (17cd/m2)
BDRV: 40H 3 Use a checker that can change 10500k +
modulation factor to adjust 0.0105uv
brightness * The range
of adjust-
ment is to
remain the
same as
what has
been set
until now.
14
Adjusting parts Input/output points Adjusting signals Adjusting conditions and procedures
Horizontal ampli- Visual adjustment by WG Phillips pattern 1 Conditions: These are to be Cont max, Bright cent, Color
tude adjustment patterns (Bus control) cent, and DFS modes after adjusting V.HEIGHT, VERT
GENERAL ADJUSTMENTS
Adjustment on the Do not use the Phillips POSITION, and H.CENT.
corrected number pattern of FRANCE 2 Adjusting procedures
of pin distortion SECAM. a. Turn the geomagnetism correction circuit OFF (cursor
Adjustment on the = 00).
corrected number b. Adjust the horizontal amplitude by Sub Address WID.
of trapezoidal dis- Make sure that the left and right white flags are hidden
tortion to the utmost possible limit.
c. Turn the left and right vertical bars into straight lines by
Sub Address PARA.
d. Correct the trapezoid distortion by Sub Address TRAP.
e. Adjust Sub Address WID again.
H. CENT Visual adjustment by WG Phillips pattern 1 Conditions: Cont max, Bright cent, Color cent, and DFS
patterns (Bus control) modes
Do not use the Phillips 2 Adjusting procedures
pattern of FRANCE a Turn the geomagnetism correction circuit OFF (cursor
SPECIFIC INFORMATIONS
SECAM. = 00).
b Adjust Sub Address HPOS and adjust the screen cen-
ter.
(Minimize D-C in the CRT adjusting magnetic field)
HEIGHT Visual adjustment by WG Phillips pattern 1. Conditions: Cont max, Bright cent, Color cent, and DFS
VERT.POSITION patterns (Bus control) modes
Do not use the Phillips 2. Adjusting procedures
pattern of FRANCE a. Turn the geomagnetism correction circuit OFF (cursor
SECAM. = 00).
b. Adjust the V. Position to the center by Sub Address
VPOS so that the up-and-down positions of the Phillips
Pattern's circle will come to the center.
c. Adjust HEIGHT by Sub Address HIT so that the up-
and-down flags of Phillips Pattern can be hidden to the
utmost possible limit.
d. Adjustment is to be made facing south or north. If it is
impossible to do so, offset the adjustment by geomag-
netism.
V901 C.CRT adjusting mag- Magnetic field UC/UM(BV=35µT)
netic field UH/UE (BV=0µ)(BH=40µ)
UA (BV=50µ)(BH=25µ)
UR (BV=45µ)(BH=20µ)
UG (BV=30µ)(BH=35µ)
UK (BV=35µ)(BH=30µ)
15
THE PIP SCREEN SUB-BRIGHT ADJUSTMENTS
[DATA ADJUSTMENTS]
1 Adjustment of minor screen sub-bright
GENERAL ADJUSTMENTS
Condition) After the completion of main screen adjustments
(1) Let both the main and PIP screens receive signal.
(2) Select the adjustment item [MWBRC] and adjust the number of collapsed black lines.
Standard) ± 1.5 lines
2 PIP screen color difference DC offset adjustments (White balance adjustment)
Condition) After adjusting PIP screen sub-bright
Adjustments) (1) Let both the