UHF: C13 to C57, R21 to R60
CATV: S01 to S03, S1 to S41, Z1 to Z39
CATV: A-8 to A-2, A to W+4, W+6 to W+84
(S Video)Input : 2Y: 1 Vp-p, 75 ohms
unbalanced, sync negative
C: 0.286 Vp-p, 75 ohms
(ComponentInput : 1Phono jacks:
sync negative
CB: 0.7 Vp-p, 75 ohms
R: 0.7 Vp-p, 75 ohms
C
Audio: 500mVrms
CAUTION
SHORT CIRCUIT THE ANODE OF THE PICTURE TUBE AND
THE ANODE CAP TO THE METAL CHASSIS, CRT SHIELD, OR
CARBON PAINTED ON THE CRT, AFTER REMOVING THE
ANODE.
Design and specifications are subject to change without notice.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK ! ON
THE SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND IN THE
PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE
THESE COMPONENTS WITH SONY PARTS WHOSE PART
NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN
SUPPLEMENTS PUBLISHED BY SONY.
– 2 –
TABLE OF CONTENTS
KV-AR29M90
RM-993
SectionTitlePage
SELF DIAGNOSTIC FUNCTION ........................................4
The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY/TIMER lamp will automatically
begin to flash.
The number of times the lamp flashes translates to a probable source of the problem. A definition of the STANDBY/TIMER
lamp flash indicators is listed in the instruction manual for the user’s knowledge and reference. If an error symptom cannot
be reproduced, the remote commander can be used to review the failure occurrence data stored in memory to reveal past
problems and how often these problems occur.
1.DIAGNOSTIC TEST INDICATORS
When an errors occurs, the STANDBY/TIMER lamp will flash a set number of times to indicate the possible cause of the
problem. If there is more than one error, the lamp will identify the first of the problem areas.
Result for all of the following diagnostic items are displayed on screen. No error has occured if the screen displays a “0”.
Diagnostic
Item
Description
• Power does not
turn on
• +B overcurrent
(OCP) or
overvoltage
(OVP)
• Vertical deflection
stopped
• Horizontal
deflection
overdrive
• White balance
failure (no
PICTURE)
No. of times
STANDBY/TIMER
lamp flashes
Does not light
2 times
5 times
Self-diagnostic
display/Diagnostic
result
—
002:000 or
002:001~255
003:001~255
004:001~255
at the same time
005:000 or
005:001~225
Probable
Cause
Location
• Power cord is not plugged
in.
• Fuse is burned out F4601
(F)
• H.OUT Q511 is shorted.
(A board)
• Q701, Q702, Q703 is
shorted (C6 board)
• -13V is not supplied.
(A board)
• IC 503 faulty (A board)
• G2 is improperly adjusted.
(Note 2)
• CRT problem.
• R(Q703), G(Q702) or
B(Q701) out is faulty
(C6 board)
• IC301 is faulty. (A board)
• No connection A board to
C6 board.
Detected
Symptoms
• Power does not come on.
• No power is supplied to the
TV.
• AC power supply is faulty.
• Power does not come on.
• Load on power line is
shorted.
• Has entered standby state
after horizontal raster.
• Vertical deflection pulse is
stopped.
• Power line is shorted or
power supply is stopped.
• No raster is generated.
• CRT cathode current
detection reference pulse
output is small.
• Micro reset
Note 1: If a + B overcurrent is detected, stoppage of the vertical deflection is detected simultaneously.
The symptom that is diagnosed first by the microcontroller is displayed on the screen.
Note 2: Refer to screen (G2) Adjustment in section 3-4 of this manual.
* R(Q703), G(Q702) or B(Q701) out is faulty (C6 board).
—
101:00 or
101:001~225
• Discharge CRT (C6 Board)
• Static discharge
• External noise
• Power is shut down shortly,
after this return back to
normal.
• Detect Micro latch up.
– 4 –
2. DISPLAY OF STANDBY/TIMER LIGHT FLASH COUNT
KV-AR29M90
RM-993
2 times
+B overcurrent/overvoltage2 times
Vertical deflection stopped
Diagnostic ItemFlash Count*
3 times
Lamp ON 0.3 sec.
Lamp OFF 0.3 sec.
Lamp OFF 3 sec.
White balance failure5 times
* One flash count is not used for self-diagnostic.
STANDBY/SLEEP lamp
3. STOPPING THE STANDBY/TIMER FLASH
Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY/TIMER lamp
from flashing.
4. SELF-DIAGNOSTIC SCREEN DIPLAY
For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confirmed, it
is possible to bring up past occurances of failure for confirmation on the screen:
[To Bring Up Screen Test]
In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below:
[Screendisplay] / channel [5] / Sound volume [-] / Power ON
˘
Note that this differs from entering the service mode (mode volume [+]).
Self-Diagnosis screen display
SELF DIAGNOSTIC
002 : 000
003 : 000
004 : 000
005 : 001
101 : 000
Numeral "0" means that no fault has been detected.
Numeral "1" means a fault has been detected.
– 5 –
KV-AR29M90
RM-993
5. HANDLING OF SELF-DIAGNOSTIC SCREEN DISPLAY
Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen
during repairs. When you have completed the repairs, clear the result display to “0”.
Unless the result display is cleared to “0”, the self-diagnostic function will not be able to detect subsequent faults after
completion of the repairs.
[Clearing the result display]
To clear the result display to “0”, press buttons on the remote commander sequentially as shown below when the diagnostic
screen is being displayed.
Channel [8] / 0
[Quitting Self-diagnostic screen]
To quit the entire self-diagnostic screen, turn off the power switch on the remote commander or the main unit.
6. SELF-DIANOSTIC CIRCUIT
FROM
CRT
FROM
[+B] Q604 C6
[V] Q509/507
IC301
Y/CHROMA JUNGLE
IK-IN
MP/
18
PROTECT
35
SDA
IC001
SYSTEM
IO-8DATB-DAT
O-LED
46
IO-SDAT
45
51
IC003
MEMORY
521
[+BovercurrentªOCPº]Occurs when an overcurrent on the +B(135) line is detected by Q604. If Q604 go to ON
and the voltage to pin 18 of IC301 should go down when V.SYNC is more than seven
verticals in a period, the unit will automatically turn off.
[Verticaldeflectionstopped]Occurs when an absence of the vertical deflection pulse is detected by Q509 and IC001
shut down the power supply.
[Verticaldeflectionovercurrent]Occurs when an overcurrent on V drive line is detected by Q507. Power supply will be
shut down when detect this by IC001.
[Whitebalancefailure]If the RGB levels* do not balance or become low level within 5 seconds, this error will be
detected by IC301. TV will stay on, but there will be no picture.
* (Refers to the RGB levels of the AKB detection Ref pulse that detects IK.)
– 6 –
SECTION 1
DISASSEMBLY
KV-AR29M90
RM-993
1-1. REAR COVER REMOVAL
2 Rear cover
1 Night screws
(+BVTP 4 × 16)
1-2. SPEAKER REMOVAL
3 Two screws
(+BVTP 4 × 16)
1-3. CHASSIS ASSY REMOVAL1-4. F BOARD REMOVAL
1 Two screws
(+BVTP 4 × 16)
2 Two screws
(Washer Head) (+P4x16)
1 Two screw
(Washer Head) (+P4x16)
2 F Board bracket
3 Two hooks
4 F Board
1-5. SERVICE POSITION1-6. TERMINAL BRACKET AND J BOARD
REMOVAL
6 J Board
1 One screw
(+BVTP 3 × 12)
– 7 –
1 One screw
(+BVTP 3 × 12)
2 Two Hooks
4 Terminal bracket
5 Two screws
(+BVTP 4 × 16)
3 One screw
(+BVTP 4 × 16)
KV-AR29M90
RM-993
1-7. D3 BOARD REMOVAL1-8. B1 BOARD REMOVAL
1 One Hooks
2 D3 Board
1-9. H1 AND H2 BOARDS REMOVAL
2 H1 Board
1 Four hooks
5 H2 Board
4 Cover, H
3 Two hooks
2 B1 Board
1-10. A AND B10 BOARDS REMOVAL
2 Two screws
(3 × 12)(+) BVTP
5 One screw
(3 × 12)(+)(BVTP)
1 Three connectors
5 One screw
(3 × 12)(+)(BVTP)
6 Four hooks
7 A Board
3 Three hooks
4 B10 Board
– 8 –
KV-AR29M90
c
1-11. PICTURE TUBE REMOVAL
Note:
• Please make sure the TV set is not in standing posotion before removing necessary CRT support located on bottom
right and left.
1) Place the TV set with the CRT face down on a cushion jig.
2) Removal the rear cover.
1 Anode Cap Removal
qa Earth Coating Assy
RM-993
qs Nut, locking
8 Holder, DGC(2)
Removal
q; Spring Tension(2)
Removal
5 Loosen the Neck Assembly
fixing screw and removal
4 VM1 Board Removal
7 Band, DGC Removal
9 Degaussing Coil
3 Loosen the Neck Assembly
fixing screw and removal
2 C6 Board Removal
6 Chassis Assy Removal
• REMOVAL OF ANODE-CAP
Note:
• After removing the anode, short circuit the anode of the picture tube and the anode cap to the metal chassis, CRT
shield or carbon paint on the CRT.
•REMOVING PROCEDURES
a
a
1 Turn up one side of the rubber cap in the direction
indicated by the arrow a.
b
b
2 Using a thumb pull up the rubber cap firmly in the direc-
tion indicated by the arrow b.
anode button
3 When one side of the rubber cap is separated from the
anode button, the anode-cap can be removed by
turning up the rubber cap and pulling it up in the
direction of the arrow c.
•HOW TO HANDLE AN ANODE-CAP
1 Do not damage the surface of anode-caps with
sharp shaped objects.
2 Do not press the rubber too hard so as not to
damage the inside of anode-cap.
A metal fitting called the shatter-hook terminal is
built into the rubber.
3 Do not turn the foot of rubber over too hard.
The shatter-hook terminal will stick out or damage
the rubber.
– 9 –
KV-AR29M90
RM-993
SECTION 2
ADVANCE OPERATION
2-1. "RESET" FUNCTION
1. Purpose
If a customer faces some setting problem that cannot be solved, using the "RESET" function some items will
be reset to its original setting (shipment condition)
2. How to Operate
The way to access to the "RESET" Function:-
a) By pressing "MENU" button or "SELECT" button (for non-menu models) on the Front Key Input and
hold it down for 5 seconds.
3. Subsequent of Operation
Sequential to the resetting operation (either methods being used in No. 2), TV set would shut down once and
automatically turn on again. The power-off duration is expected to be about 500msec. An OSD message,
"RESET" tentatively will be displayed for 10 sec after IK status gets stable.
As a result, some items will be reset to an initial condition (shipment condition) wheareas some other remains
at the last selection by user.
Items that remains at the last selection by user
Channel No., Favourite CH Setup,
PIC rotation, OSD Language, Fine tuning, TV System, Skip
Reset Items
Video inputRF
Volume30
Picture modeDYNAMIC
PICSI
Sound modeDYNAMIC
Surround modeOFF
Favourite CH modeAUTO
Multi Picture (PIP)OFF
PIP positionBottom Right
OSD recallOFF
Antenna sensitivityOFF
•In order to reduce the influence of geomagnetism on the set's
Purity control
picture tube, face it east or west.
•Switch on the set's power and degauss with the degausser.
3-1. BEAM LANDING
1. Input a white signal with the pattern generator.
Contrast
Brightness
2. Position neck assy as shown in Fig3-2.
}
normal
Fig. 3-3
3. Set the pattern generator raster signal to a green raster.
4. Move the deflection yoke to the rear and adjust with the
purity control so that the green is at the center and the blue
and the red take up equally sized areas on each side.
(See Figures 3-1 through 3-4.)
5. Move the deflection yoke forward and adjust so that the
Blue
Red
Green
entire screen is green. (See Figure 3-2.)
6. Switch the raster signal to blue, then to red and verify the
condition.
7. When the position of the deflection yoke has been decided,
Fig. 3-4
fasten the deflection yoke with the screws and DY spacers.
8. If the beam does not land correctly in all the corners, use a
magnet to adjust it.
(See Figure 3-5.)
Purity control
corrects this area.
b
a
Disk magnets or rotatable
disk magnets correct these
areas (a-d).
Neck Assy
Behind the G2 edge
G2G1G3
Fig. 3-1
Fig. 3-2
– 11 –
c
Deflection yoke positioning
corrects these areas.
a
d
d
Fig. 3-5
b
c
KV-AR29M90
RM-993
3-2. CONVERGENCE
Preparation :
•Before starting this adjustment, adjust the focus, horizontal size
and vertical size.
•Receive dot/hatch signal.
•Pic mode: Personal (Pic 90%, Brightness 50%, Colour 50 %,
Hue 50%, Sharpness 50%).
(1) Horizontal and Vertical Static Convergence
Purity
BMC
BMC (Hexapole)
Purity
Center dot
R G B
H. STAT VR
R
G
B
V. STST
Magnet
RV702
H. STAT
RV701
SCREEN (G2)
C6 Board
1. (Moving horizontally), adjust the H.STAT control so that the
red, green and blue dots are on top of each other at the center of
the screen.
2. (Moving vertically), adjust the V.STAT magnet so that the red,
green and blue dots are on top of each other at the center of the
screen.
3. If the H.STAT variable resistor cannot bring the red, green and
blue dots together at the center of the screen, adjust the
horizontal convergence with the H.STAT variable resistor and
the V.STAT magnet in the manner given below.
(In this case, the H.STAT variable resistor and the V.STAT
magnet influence each other, so be sure to perform adjustments
while tracking.)
DY pocket
V.STAT
1 V. S TAT
bb
2 H. STAT VR
RGGBB
3
V.STAT
a
a
B
G
R
a
b
R
a
b
B
G
R
b
– 12 –
b
a
R
G
b
B
B
G
R
4 BMC (Hexapole) Magnet.
Neck assyNeck assy
Blue
RedBlue
Red
VM1 boardVM1 board
If the red, green and blue dots are not balanced or aligned, then
use the BMC magnet to adjust in the manner described below.
RGBR G BRGB
KV-AR29M90
RM-993
RB
G
RG
GB
RB
5 Y separation axis correction magnet adjustment.
1. Receive the cross-hatch signal and adjust [PICTURE] to [MIN]
and [BRIGHTNESS] to [STANDARD] .
2. Adjust the Y separation axis correction magnet on the neck
assembly so that the horizontal lines at the top and bottom of
the screen are straight.
(2) Dynamic Convergence Adjustment
Preparation:
•Before starting this adjustment, adjust the horizontal static
convergence and the vertical static convergence
RB
Note
1. The Red and Blue magnets should be equally far from the
horizontal center line.
2. Do not separate the Red and Blue magnets too far. (Less than
8 mm)
B
R
TLHTLV
YCHXCV
RB
R
B
– 13 –
KV-AR29M90
RM-993
TLVRotate TLV-2 VOL (29”, 34”) on DY
XCV Rotate XCV Adj core on DY
YCH Rotate YCH VOL on DY
TLHInsertTLHCorrection Plate to DY Pocket
(Left or Right)
ON DY:
YCH
TLV1
XCV
TLV2
(3) Screen-corner Convergence
ba
a-d : screen-corner
misconvergence
cd
3-3. FOCUS ADJUSTMENT
FOCUS adjustment should be completed before W/B adjustment.
Focus
Screen
FLYBACK TRANSFORMER (T503)
1.Receive digital monoscope pattern.
2.Set "Picture Mode" to "Standard".
3.Set S2801 to mechanical center position.
4.Adjust focus VR so that the center of the screen becomes just
focus.
5.Adjust S2801 when corner focus is unbalance is right and left.
6.Change the receiving signal to white pattern blue back.
7.Confirm Magenta ring is not noticable. Incase magneta ring is
obvious, reset S2801 to mechanical center position and then
adjust FOCUS VR to balance between MAGENTA RING and
FOCUS.
Fix a Permalloy assy corresponding to the misconverged
areas.
a
d
Permalloy assembly
b
c
– 14 –
KV-AR29M90
RM-993
3-4. G2 (SCREEN) AND WHITE BALANCE
ADJUSTMENTS
1. G2 (SCREEN) ADJUSTMENT
1) Set the PICTURE to normal.
2) Put to VIDEO input mode without signals.
3) Connect R, G and B of the C6 board cathode to the
oscilloscope.
4) Adjust BRIGHTNESS to obtain the cathode voltage to the
value below.
5) Adjust G2 (screen) on the FBT until picture shows the point
before cut off.
Cathode setting voltage:
175 V ± 2 (VDC)
0 V
2. WHITE BALANCE ADJUSTMENT
1) Set to Service Mode (Refer Section 4-1: ADJUSTMENTS
WITH COMMANDER).
2) Input white raster signal.
3) Set the PICTURE to minimum.
4) Select GCT (WHB 4) and BCT (WHB 5) with [1] and [4], and
adjust the level with [3] and [6] for the best white balance.
5) Set the PICTURE to maximum.
6) Select GDR (WHB 1) and BDR (WHB 2) with [1] and [4],
and adjust the level with [3] and [6] for the best white
balance.
7) Write into the memory by pressing [MUTING] then [0].
3. SUB BRIGHT ADJUSTMENT
1) Set to service mode.
2) Input a staircase signal of black to white from the pattern
generator.
3) BRIGHTNESS ....50%.
PICTURE ............MINIMUM
4) Select SBR (WHB7) with [1] and [4], and adjust SBR
(WHB7) level with [3] and [6] so that the second stripe from
the right is dimly lit.
White
second from the right
Black
– 15 –
KV-AR29M90
RM-993
SECTION 4
CIRCUIT ADJUSTMENTS
4-1. ADJUSTMENTS WITH COMMANDER
Service adjustments to this model can be performed using the
supplied Remote Commander RM-993.
a. ENTERING SERVICE MODE
With the unit on standby
n
[DISPLAY]n5nVOL (+) n[POWER]
This operation sequence puts the unit into service mode.
The screen display is :
Device
Name
Suffix No
(OEM Code)
Software versionTotal Power-On time (hours)
b. METHOD OF CANCELLATION FROM SERVICE
MODE
Set the standby condition (Press [POWER] button on the commander),
then press [POWER] button again, hereupon it becomes TV mode.
c. METHOD OF WRITE INTO MEMORY
1) Set to Service Mode.
2) Press [1] (UP) and [4] (DOWN), to select the adjustment.
4) Press [MUTING] button to indicate WRITE on the screen.
5) Press [0] button to write into memory.
d. MEMORY WRITE CONFIRMATION METHOD
1) After adjustment, pull out the plug from AC outlet, and then
plug into AC outlet again.
2) Turn the power switch ON and set to Service Mode.
3) Call the adjusted items again to confirm adjustments were made.
1, 4Select the adjustment item.
↓
3, 6Raise/lower the data value.
↓
Item No
00
1.0C
Item
Name
DataMode
HPS 1CpGEO
597F000A0602S
Marking of new NVM
PAL,SECAM:50
NTSC :60
[MUTING]Writes.
↓
-Executes the writing.
4-2. ADJUSTMENT METHOD
Item Number 00 of device GEO
This explanation uses H-Position as an example.
1. Select “GEO 00 HPS” with the 1 and 4 buttons.
2. Raise/lower the data with the 3 and 6 buttons.
3. Select the optimum state. (The standard is 1F for PAL
reception.)
4. Write with the [MUTING] button. (The display changes to
WRITE.)
5. Execute the writing with the - button. (The WRITE
display will be changed to red color while excuting, and
back to SERVICE.)
Example on screen display :-
GEO00
602S 1.0C
GEO00
602S 1.0C
Write with [MUTING]
GEO00
602S 1.0C
Write executed with -
1F50HPS
7F0000A59
1FWRITE50HPS
7F0000A59
1F50HPS
7F0000A59
GREEN
Adjusted with 3
and 6 buttons.
GREEN
RED
The WRITE display
then the display
returns to green
SERVICE.
Use the same method for all Items. Use 1 and 4 to select the
adjustment item, use 3 and 6 to adjust, write with [MUTING],
then execute the write with -.
Note :1.In [WRITE], the data for all items are written into
memory together.
2. For adjustment items that have different standard data
between 50Hz or 60Hz, be sure to use the respective
input signal after adjustment.
7, -All the data becomes the values in memory.
8, -All user control goes to the standard state.
5, -Service data initialization (Be sure not to use
usually.)
[MUTING]+ -Write 50Hz adjustment data to 60Hz, or vice
• Standard data listed on the Adjustment Item Table are reference values, therefore it may be different for each model and for each mode.
• Note for Different Data Those are the standard data values written on the microprocessor. Therefore, the data values of the modes and stored respectively in the memory.
In case of a device replacement, adjustment by rewriting the data value is necessary for some items.
ITEM INFORMATION
No. OPB0 OP1
Item
KV-AR29M90
(APPLICABLE FOR XF-L(21" & 14") MODELS ONLY.
No. OPB1 OP2
Item
KV-AR29M90
AV Input00 = no AV Input01 = 1 AV Input
DVD InputEffective only when "AV Input" is set to 3 AV Input
PIP 4PIP 40 = disabled,1 = enabled
No. OPB2 OP3
Item
KV-AR29M90
XTAL 4.43
1
TOP
1
Initial menu
1
XTAL 3.58
1
NICAM
1
AP2
1
SECAM
1
HDEV
1
2nd. Lang
1
Thai Bil
0
B/G
1
PIP 4
1
10 = 2 AV Input11 = 3 AV Input
Auto PIC
1
A-TVsys
1
US ST
0
I
1
DVD Input
1
DTE
0
D/K
1
AV Input
Forced 50/60
0
KV-AR29M90
M
1
11
2
Colour SW
*
1
RM-993
Initial MenuInitial Menu Setup0 = disabled,1 = enabled
AP2Auto Processor Selection0 = AP, 1 = AP2.
Auto PIC
*3
A-TVsysAuto TV System in Auto Program0 = disabled, 1 = enabled
*
US ST
DTEDTE Model Selection0 = Non DTE,1 = DTE
Forced 50/60Forced to 50/60 Hz during no signal condition 0=60Hz, 1=50Hz
Color SW
Note:*1 - For XA21/XH29 Models Only
No. OPB3 *OP4
*2
- For XA34/29/25 Models Only
*3
- For PNC3, the enables are from service item APG and APB.
Item
KV-AR29M90
*2
PNC2
0
Korean ST
0
Auto Picture Improvement0 = offPNC1/PNC2
1 = activatePNC1/PNC2
USA Stereo0 = disabled,1 = enabled
Color Data Selection in Dynamic Mode0 = 65 (No PIP), 1 = 57 (PIP)
Vid NTSC3.58
0
Wide
0
Video3
0
Chinese(multi mdl)
1
Arabic/C.Chinese
1
Thai/Korean
1
APPLICABLE TO XS ONLY - Sub Language Selection (Bit 0 - Bit 2)
Korean Stereo*Korean Stereo0 = disabled,1 = enabled
2
PNC2*
Enable switch of PNC2 0 = disable,1 = enable
Video NTSC3.58*Video Color System0 = Multi System,1 = Single System (NTSC3.58)
WideEnable wide mode0 = disable,1 = enable
Note : *APPLICABLE FOR NTSC MODELS ONLY
– 23 –
KV-AR29M90
VY
RM-993
4-3. ADJUSTMENT FOR NON DIGITAL TEXTURE
ENHANCER (DTE) MODEL
(not used for this model)
SUB COLOR ADJUSTMENT
1. Select Video.
2. Input PAL Color Bar
3. Set to following condition PICTURE 100%, BRIGHTNESS
50%, Color 50%.
4. Connect an oscilloscope to pin 1 (BOUT) of CN305, A Board.
5. Set the service mode and select SAJ 3 ‘SCL’ with 1 and 4 of
the commander then adjust the VB2=VB3=VB4 3 and 6.
6. Press
7. Input NTSC Color Bar to set and repeat items (3 to 7).
8. Select "WIDE" mode, write the "SAME DATA- 3 STEPS" for
[MUTING] → - of the commander to write the data.
both PAL and NTSC Color Bar input.
VB1
VB2 VB3
VB2 = VB3 = VB4
VB2 = VB3 = VB4 (Difference is within 70mV)
VB4
4-4. ADJUSTMENT FOR DIGITAL TEXTURE
ENHANCER (DTE) MODEL
Y LEVEL ADJUSTMENT
1. Select Video.
2. Input PAL Color Bar to TV set (white reference 100%).
3. Set the following condition:
DTE: ON
Picture Mode : Dynamic
4. Connect an oscilloscope to pin 1 (CV/Y in) of CN106, A
Board.
5. Set to Service Mode and YCT 08 ‘YOL’ with 1 and 4 of the
commander then adjust to VY within spec with 3 and 6.
6. Then press
7. Select RF.
8. Repeat item 2 to 4.
9. Set to Service Mode and YCT 04 ‘SCT’ with 1 and 4 of the
commander then adjust to VY within spec with 3 to 6.
10. Copy SCT data to NTSC (RF).
SCT Setting (Video Mode) : 07h (NTSC & PAL)
[MUTING] → - to write the data.
SUB COLOR ADJUSTMENT
1. Select Video.
2. Input PAL Color Bar
3. Set to following condition PICTURE 100%, BRIGHTNESS
50%, Color 50%.
4. Connect an oscilloscope to pin 1 (BOUT) of CN305, A Board.
5. Set the service mode and select SAJ 3 ‘SCL’ with 1 and 4 of
the commander then adjust the VB2=VB3=VB4 3 and 6.
6. Press
[MUTING] → - of the commander to write the data.
7. Add 6 steps and save the data.
8. Input NTSC Color Bar to TV set and repeat items 3 to 7.
9. Select "WIDE" mode, write the "SAME DATA- 3 STEPS" for
both PAL and NTSC Color Bar input.
SUB HUE ADJUSTMENT
1. Select Video 1.
2. Input a NTSC 3.58 color-bar, video into Video 1.
3. Set the following condition:
PICTURE 100%, BRIGHTNESS 50%, COLOR 50%
4. Connect an oscilloscope to pin 1 (B OUT) of CN305, A board.
5. Select SAJ 1 "SHU" with 1 and 4 of the commander by
setting to Service Mode and adjust to VB1=VB2=VB3=VB4
with 3 and 6.
VB1
VB2
VB3
VB4
± 110mV
SPEC: VY : 1.2 Vpp ± 0.05m Vpp
SUB COLOR (YCT) ADJUSTMENT
1. Select Video.
2. Input NTSC Color Bar.
3. Set the following condition:
DTE: ON
Picture Mode : Dynamic
NTSC 75% Color Bar
4. Connect an oscilloscope to pin 2 (B-Y in) of CN303, A Board.
5. Set to Service Mode and YCT 0A ‘COL’ with 1 and 4 of the
commander then adjust to VB within spec with 3 and 6.
6. Then press
7. Select RF.
8. Repeat item no 2 to 4.
9. Set to Service Mode and YCT 03 ‘COL’ with 1 and 4 of the
commander then adjust the waveform within spec with 3 and
6.
10. Then press
11. Input PAL Color Bar (75%) and repeat item no 8 to 10.
[MUTING] → - to write the data.
[MUTING] → - to write the data.
VB
VB1 = VB2 = VB3 = VB4
The highest level of VB1,VB2,VB3,VB4 must be aligned at
the same line. Ideal difference level between VB2 and VB3
should be within ± 110mV.
6. Press [MUTING]→ - of the commander to write the data.
7. Adjust SAJ 1 "SHU" as step 3 to 6 when receiving TV mode.