Sony TRINITRON KV-G21L3 User manual

TRINITRON ® COLOR TV
MODEL COMMANDER DEST. CHASSIS NO.
KV-G21L3 RM-883 ME SCC-J35Y-A
SERVICE MANUAL
MODEL COMMANDER DEST. CHASSIS NO.
BG-1S (D)
CHASSIS

– 2 –
KV-G21L3
RM-883
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.
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.
SPECIFICATIONS
Note
Power requirements 110-240 V AC, 50/60 Hz
Power consumption (W) Indicated on the rear of the TV
Television system B/G
Color system PAL, PAL 60, SECAM, NTSC4.43, NTSC3.58 (AV IN)
Channel coverage VHF: E2 to E12/UHF: E21 to E69/CATV: S01 to S03, S1 to S41
Audio output (speaker) 3W
Inputs Antenna: 75 ohms
VIDEO IN jacks: phono jacks
Video: 1 Vp-p, 75 ohms
Audio: 500mVrms, high impedance
Outputs Earphone jack: minijack
MONITOR OUT jacks: phono jacks
Video: 1 Vp-p, 75 ohms
Audio: 500 mVrms
Picture tube 21 in.
Tube size (cm) 54 Measured diagonally
Screen size (cm) 51 Measured diagonally
Dimensions (w/h/d, mm) 527 ×464 ×471
Mass (kg) 22
Design and specifications are subject to change without notice.

– 3 –
KV-G21L3
RM-883
TABLE OF CONTENTS
Section Title Page Section Title Page
5. CIRCUIT ADJUSTMENTS
5-1. Adjustment With Commander ................................. 19
5-2. Adjustment Method ................................................. 20
5-3. A Board, Adjustment After IC003
(MEMORY) Replacement ....................................... 23
5-4. Picture Distortion Adjustment ................................. 23
6. DIAGRAMS
6-1. Block Diagram ......................................................... 25
6-2. Circuit Boards Location .......................................... 27
6-3. Schematic Diagrams and Printed Wiring Boards ... 27
(1) Schematic Diagram of A Board .............................. 31
(2) Schematic Diagram of C Board ............................. 35
6-4. Semiconductors........................................................ 37
7. EXPLODEDVIEW......................................................... 39
8. ELECTRICAL PARTS LIST....................................... 41
1. GENERAL........................................................................ 4
2. DISASSEMBLY
2-1. Rear Cover Removal................................................ 11
2-2. A Board Removal .................................................... 11
2-3. Service Position ....................................................... 11
2-4. Replacement of parts ............................................... 12
2-4-1. Replacement of Multi Button........................... 12
2-4-2. Replacement of Light Guide and Power Button
.................................................................. 12
2-5. Demagnetization Coil Removal .............................. 12
2-6. Picture Tube Removal.............................................. 13
3. SET-UP ADJUSTMENTS
3-1. Beam Landing .......................................................... 14
3-2. Convergence............................................................. 15
3-3. Focus Adjustment .................................................... 17
3-4. G2 (Screen) and White Balance Adjustment .......... 17
4. SELF DIAGNOSIS FUNCTION................................ 18

– 4 –
KV-G21L3
RM-883
SECTION 1
GENERAL
The operating instructions mentioned here are partial abstracts from the
Operating Instructions Manual. The page numbers of the Operating
Instruction Manual remain as in the manual.
2
MONITOR
OUT
AUDIO VIDEO
VIDEO
IN
1
2
3
3
B/G I D/K M
TV SYSTEM AUTO PROGR
TV SYSTEM
AUTO PROGR
pKV-J21MF3

–5 –
KV-G21L3
RM-883
Getting Started
-EN
4
MONITOR
OUT
AUDIOVIDEO
VIDEO
IN
Connections
Connecting a VHF antenna or a combination VHF/UHF antenna
— 75-ohm coaxial cable (round)
Attach an optional IEC antenna connector to the 75-ohm coaxial cable.
Plug the connector into the (antenna) socket at the rear of the TV.
Getting Started
Rear of TV Rear of TV
Connecting an indoor antenna
Note
•You are advised to use an outdoor antenna for better reception.
2
1
On a wall
or
3
Getting Started
5
-EN
EN
Connecting optional equipment
You can connect optional audio/video equipment to your TV such as a VCR, multi disc player, camcorder, video
game or stereo system.
Connecting video equipment using video input jacks
pKV-G21L3
When connecting a monaural VCR
Connect the yellow plug to VIDEO and the black plug to AUDIO-L (MONO).
pKV-G21L3
When using the video input jacks
Do not connect video equipment to the video input jacks at the front and the rear of your TV simultaneously; otherwise the picture will
not be displayed properly on the screen.
to antenna
output
VIDEO IN
Rear of TV
to antenna socket
VIDEO
AUDIO
VIDEO
IN
MONITOR
OUT
: Signal flow
VCR
to video
and audio
outputs
Front of TV
VIDEO
VIDEO INPUT
AUDIO
Camcorder
to video and
audio outputs
: Signal flow

–6 –
KV-G21L3
RM-883
Getting Started
-EN
6
Connecting audio/video equipment using MONITOR OUT jacks
When recording through the MONITOR OUT jacks
If you change the channel or video input while recording with a VCR, the channel or video input you are recording also will be changed.
VIDEO
AUDIO
VIDEO
IN
MONITOR
OUT
Rear of TV
MONITOR OUT
pKV-G21L3
to video
and audio
inputs
to antenna socket
to antenna
output VCR or
Audio system
: Signal flow
Getting Started
7
-EN
Presetting channels
Presetting channels manually using the
buttons on the TV
1Press MANUAL PROGR.
2Press PROGR +/–on the remote commander
until the required program position
appears on the screen.
3Press TV SYSTEM until your local TV system
appears (KV-J21MF3 only).
4Press VOLUME +/–until the required channel
picture appears on the screen.
5Press MANUAL PROGR.
If the TV system is not properly selected
(KV-J21MF3 only).
The color of the picture may be poor and/or the sound
may be noisy. In this case, select the appropriate TV
system.
1Press PROGR +/– on the remote commander to
select the program position.
2Press TV SYSTEM until the picture and sound
become normal.
Notes (KV-J21MF3 only).
•If you do not know your local TV system, consult your nearest
authorized service center or dealer.
•The setting of the TV SYSTEM is memorized for each program
position.
Disabling program positions using the
buttons on the TV
By disabling unused or unwanted program positions,
you can skip those positions when you press
PROGR +/– on the remote commander.
1Press PROGR +/–on the remote commander
until the unused or unwanted program
position appears on the screen.
2Press MANUAL PROGR.
3Press PIC MODE on the remote commander.
4Press MANUAL PROGR.
To cancel the skip setting
Preset the channel manually or automatically again.
You can preset up to 100 TV channels in numerical
sequence from program position 1 automatically.
To change the channel for a particular program
position or to receive a channel with a weak signal,
you can preset the channel manually. You can also
disable program position.
You can preset TV channels using the buttons on the
TV or the remote commander.
Presetting channels automatically
using the buttons on the TV
Front of TV
1Press POWER to turn on the TV.
When the TV is turned on in standby mode, press
POWER on the remote commander.
2Press TV SYSTEM until your local TV system
appears (KV-J21MF3 only).
3Press AUTO PROGR.
To start presetting channels automatically
from the specified program position
1Press MANUAL PROGR.
2Press TV SYSTEM to select your local TV system
(KV-J21MF3 only).
3Press PROGR +/–to select the program position.
4Press AUTO PROGR.
231
MANUAL PROGR
COLOR SYSTEM
R
SELECT
TV SYSTEM
AUTO PROGR
POWER
POWER
TV SYSTEM
B/G ID/K M
AUTO PROGR
1231

–7 –
KV-G21L3
RM-883
Getting Started
9
-EN
If you are not satisfied with the picture
and sound quality
You may be able to further improve the picture and
sound quality by using fine tuning as below:
1Select the program position you want to
adjust.
2Press SELECT until “MANUAL PROGRAM”
appears on the screen.
3Press + or –on the remote commander
once.
4Press DISP until “FINE”appears on the
screen.
5Press + or –continuously until you are
satisfied with the picture and sound
quality.
6Press SELECT to return to normal screen.
Getting Started
-EN
8
Presetting channels automatically
using the remote commander
1Press POWER to turn on the TV.
When the TV is turned on in standby mode, press
POWER on the remote commander.
2Press SELECT until “TV SYSTEM”appears
(KV-J21MF3 only).
3Press + or –to select your local TV system
(KV-J21MF3 only).
4Press SELECT until “AUTO PROGRAM”
appears.
5Press + or –.
6Press + or –.
Presetting channels manually using the
remote commander
1Press SELECT until “TV SYSTEM”appears
(KV-J21MF3 only).
2Press + or –to select your local TV system
(KV-J21MF3 only).
3Press PROGR +/–or a number button until
the required program appears on the
screen.
4Press SELECT until “MANUAL PROGRAM”
appears.
5Press + or –.
6Press + or –.
The selected channel appears on the screen.
7Press SELECT to return to normal screen.
+ or –
SELECT
POWER
1231
SELECT
TV SYSTEM : B/G
SELECT
AUTO PROGRAM
B/G I D/K M
VHF LOW B/G
SELECT
TV SYSTEM : B/G
B/G I D/K M
or
123
46
789
÷0
5
PROGR
JUMP
1
SELECT
MANUAL PROGRAM
VHF LOW B/G
SELECT

–8 –
KV-G21L3
RM-883
Operations
10
-EN
POWER
VIDEO
HOLD
TV
123
46
789
÷0
5
JUMP
Watching the TV
1Press POWER to turn on the TV.
When the TV is turned on in standby mode, press
POWER on the remote commander.
2Select the TV program you want to watch.
To select a program position directly
Press the number button.
To select a two-digit program position, press “-/--”
before pressing the number buttons.
For example: to select program position 25, press
“-/--,”and then “2”and “5.”
To scan through program positions
Press PROGR +/–until the program position you
want appears.
3Press VOL +/–to adjust the volume.
Turning off the TV
To turn off the TV temporarily
Press POWER on the remote commander. The
STANDBY indicator on the TV lights up.
To turn off the TV completely
Press POWER on the TV.
If the power on the TV is turned off in standby mode,
the STANDBY indicator on the TV may remain alight for
a while.
Watching the video input
Press VIDEO/HOLD.
To watch TV
Press TV.
Switching back quickly to the previous
channel
Press JUMP.
Muting the sound
Press MUTING.
÷25
PROGR
Operations
VIDEO 1
POWER
JUMP
MUTING
MUTING
POWER
VOL
Operations
11
-EN
DISP
REVEAL
Setting the Sleep Timer
You can set the TV to automatically turn off as you
have programmed.
Press SLEEP/TEXT CLR.
To cancel the Sleep Timer, press SLEEP/TEXT CLR
repeatedly until “SLEEP TIMER: OFF”appears, or turn
off the TV.
Changing the on-screen display
language
You can use buttons on the remote commander or the
TV to change the on-screen display language.
1Press SELECT until the screen appears as
follows:
2Press + or –to select “”.
Note
•You can also use SELECT and VOLUME +/–on the TV to
Setting the Wake Up Timer
You can set the TV to automatically turn on as you have
programmed.
1Press WAKE UP/INDEX repeatedly to set the
timer.
The on-screen display appears and the WAKE UP
indicator on the TV lights up.
2If you want a particular TV program or
video input to be displayed using the Wake
Up Timer, select the TV program or video
input.
3Press POWER on the remote commander or
set the Sleep Timer to turn off the TV in
standby mode.
To cancel the Wake Up Timer, press WAKE UP/INDEX
repeatedly until “WAKE UP TIMER: OFF”appears, or
turn off the main power of the TV.
Notes
•The Wake Up Timer starts immediately after the on-screen
display disappears.
•The last TV program position or video input just before the TV
turns into standby mode will appear when the TV is turned on
using the Wake Up Timer.
•If no buttons or controls are pressed for more than two hours
after the TV is turned on using the Wake Up Timer, the TV
automatically turns into standby mode. If you want to
continue watching the TV, press any button or control on the
remote commander or the TV.
Displaying on-screen information
Press DISP/REVEAL.
The program position, local system, and TV settings are
displayed on the screen.
: LANGUAGE /
SLEEP TIMER:30M SLEEP TIMER:60M
SLEEP TIMER:OFF SLEEP TIMER:90M
No sleep timer After 90 minutes
After 60 minutes
After 30 minutes
1
AUTO B/G
DYNAMIC ≥MUSIC
WAKE UP
INDEX
After 10 minutes
No wake up timer After 12 hours
WAKE UP TIMER:10M
WAKE UP TIMER:OFF WAKE UP TIMER:12H00M
SLEEP
TEXT CLR
+ or –
SELECT
SELECT
LANGUAGE / : ENGLISH

–9 –
KV-G21L3
RM-883
Operations
12
-EN
Using the Child Lock
feature Watching the picture
in wide mode
You can prevent a child from watching certain program
positions by using the buttons on the remote
commander.
1Select the TV program you want to lock.
2Press SELECT until “CHILD LOCK”appears
on the screen.
3Press + or –until “LOCKED”appears on the
screen.
Notes
•To unlock the program position, repeat steps 1 to 3 as above
until “LOCKED”disappears from the screen.
•To prevent your child from unlocking the program position,
keep the remote commander away from your child.
÷0
+ or –
SELECT
SELECT
CHILD LOCK
LOCKED
You can adjust the display mode accordingly to fit the
programs to your TV screen size.
Press WIDE/V-ZOOM repeatedly until the wide
display mode you want appears on the screen.
TV
WIDE/
V-ZOOM
Good-bye,Jane
Good-bye.
Good-bye,Jane
Good-bye.
WIDE
V-ZOOM
NORMAL
Normal display
mode “WIDE”mode
“V-ZOOM”mode
Operations
13
-EN
Adjusting the
picture
Adjusting the sound and picture settings
1Press SELECT until the item you want to
adjust appears.
Each time you press SELECT, the screen changes
as follows:
2Press + or –to adjust the item.
3To adjust other items, repeat steps 1 and 2.
Notes
•You can also use SELECT and VOLUME +/–on the TV to
adjust the sound and picture settings.
•The on-screen display for BASS, TREBLE, BALANCE and
SURROUND are available for KV-J21MF3 only.
•SURROUND is only applicable to a stereo signal. When
receiving a monaural signal, please turn off SURROUND for
the best sound
(KV-J21MF3 only)
.
If the picture color is abnormal when receiving
programs through the ˘(antenna) terminal
Change the “TV SYSTEM”
(KV-J21MF3 only) or “COLOR
SYSTEM”setting or adjust the “COLOR”level in the on-screen
display until the color becomes normal.
If the picture color is abnormal when receiving
programs through the video input jack
Change the “COLOR SYSTEM”setting or adjust the “COLOR”
level in the on-screen display until the color becomes normal.
Note
•Normally set “COLOR SYSTEM”to “AUTO”.
If the sound is distorted or noisy when receiving
programs through the ˘(antenna) terminal
(KV-J21MF3 only)
Change the “TV SYSTEM”setting in the on-screen display until
the sound becomes clear.
Adjusting the sound
and picture
÷0
SOUND
MODE
SELECT
PIC MODE
Selecting the sound mode
pKV-J21MF3 only
Press SOUND MODE until the mode you want
appears.
Each time you press SOUND MODE, the screen
changes as follows:
Note on the SOUND MODE button (KV-G21L3)
•The sound mode feature is unavailable for your TV. Thus, the
SOUND MODE button on the remote commander is not used
for your TV.
Selecting the picture mode
Press PIC MODE until the mode you want
appears.
Each time you press PIC MODE, the screen changes as
follows:
Note
•If you change the picture and sound mode after the following
adjustments, the adjustment changes in accordance with the
picture and sound mode.
SELECT
+ or –
SOUND
MODE
≥MUSIC ≥DRAMA ≥SPORTS ≥SOFT
PIC MODE
DYNAMIC STANDARD
SOFT
High contrast
picture Soft picture Normal
picture
Emphasize
low and high
sound effect
Emphasize
huge
audience
atmosphere
Emphasize
vocals and
background
music Emphasize
soft sound
PICTURE
COLOR BRIGHT HUE
SHARPNESS
BASS
BALANCE
SURROUND TREBLE
(Operative for
NTSC signal only)
(KV-J21MF3 only)
Front of TV
MANUAL PROGR
COLOR SYSTEM
R
SELECT
TV SYSTEM
AUTO PROGR

–10 –
KV-G21L3
RM-883
Additional Information
14
-EN
Troubleshooting
Additional Information
If you have any problems, read this manual again and
check the countermeasure for each of the symptoms
listed below.
If the problem persists, contact your nearest authorized
service center or dealer.
Snowy picture
Noisy sound
/Check the antenna.
/Check the antenna connection on the TV
and on the wall.
/Check the TV SYSTEM setting
(KV-J21MF3 only).
Dotted lines or stripes
/This may be caused by local interference
(e.g. cars, neon signs and hair dryers). Adjust
the antenna for minimum interference.
Double images or “ghosts”
/This may be caused by reflections from
nearby mountains or buildings. A highly
directional antenna may improve the picture.
No color
/Adjust the COLOR level in the on-screen
display.
/Check the COLOR SYSTEM setting.
No picture
No sound
/Press POWER.
/Check the antenna connection.
/Check the VCR connections.
/Check the power cord connection.
/Check the standby mode.
Good picture
Noisy sound
/Check the TV SYSTEM setting
(KV-J21MF3 only).
/Reduce the TREBLE level or select the
“SOFT”sound mode (KV-J21MF3 only).
Good picture
No sound
/Press VOLUME +.
/Press MUTING.
TV cabinet creaks
/Even if the picture or the sound is normal,
changes in the room temperature
sometimes make the TV cabinet expand or
contract, making a noise. This does not
indicate a malfunction.
Note on the remote commander
•The supplied remote commander is used on several models of
the TV. If you do not find instructions for some controls that
are on the remote commander, that means your TV does not
employ the features of those controls, e.g. TEXT.
Note on the TV system
•The TV SYSTEM button is not used on the KV-G21L3 model.
Notes
•When you switch on the TV, you may hear the “boon”sound
that is caused by the demagnetization of the TV. This does not
indicate a malfunction.
•The picture color may become abnormal if you change the
direction of your TV. To obtain the normal picture color, press
POWER on the TV to switch off the TV for five minutes and
then switch it on again.
WARNING
Do not install the appliance in a confined space, such as
a bookcase or built-in cabinet.

– 11 –
KV-G21L3
RM-883
2-1. REAR COVER REMOVAL
2-2. A BOARD REMOVAL
2-3. SERVICE POSITION
SECTION 2
DISASSEMBLY
2Two screws
(BVTP 4×16)
3One screw
(BVTP 3×16)
1Two screws
(BVTP 4×16)
A board
Lever
Lever
A board

1DEMAGNETIZATION COIL 2TENSION SPRING
PICTURE TUBE
ill2-02-0-1_ES29

–13 –
KV-G21L3
RM-883
2-6. PICTURE TUBE 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
1Turn up one side of the rubber cap in the direction indicated by the arrow a.
a
a
3C board
1Anode cap
Cushion
2A board
4Deflection yoke
5Four screws
(Tapping screws)
b
b
2Using a thumb press down then pull up the rubber cap firmly in the direction
indicated by the arrow b.
3When 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.
c
Anode button
•HOWTOHANDLEANANODE-CAP
1Do not damage the surface of anode-caps with sharp shaped objects
2Do not press the rubber too hard so as not to damage the inside of anode-caps
A metal fitting called the shatter-hook terminal is built into the rubber.
3Do not turn the foot of rubber over too hard
The shatter-hook terminal will stick out or damage the rubber.
Anode Button

– 14 –
KV-G21L3
RM-883
•The following adjustments should be made when a complete
realignment is required or a new picture tube is installed.
•These adjustments should be performed with rated power
supply voltage unless otherwise noted.
Controls and switch should be set as follows unless otherwise noted:
PICTURE control........................................................... normal
BRIGHTNESS control................................................... normal
Perform the adjustments in the following order
1. Beam Landing
2. Convergence
3. Focus
4. White Balance
Note : Test Equipment Required:
1. Color-bar/Pattern Generator
2. Degausser
3. Oscilloscope
SECTION 3
SET-UP ADJUSTMENTS
................................................................................................................................................................................................................................
Preparation :
•In order to reduce the influence of geomagnetism on the set's
picture tube, face it east or west.
•Switch on the power and degauss with the degausser.
3-1. BEAM LANDING
1. Input a white signal with the pattern generator.
Contrast
Brightness
2. Set the pattern generator raster signal to a green raster.
3. 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 3-3.)
4. Move the deflection yoke forward and adjust so that the entire
screen is green. (See Figure 3-1.)
5. Switch the raster signal to blue, then to red and verify the
condition.
6. When the position of the deflection yoke has been decided,
fasten the deflection yoke with the screw.
7. If the beam does not land correctly in all the corners, use a
magnet to adjust it.
(See Figure 3-4.)
Fig. 3-1
Purity coutrol
Fig. 3-2
Fig. 3-4
Deflection yoke positioning
corrects these areas.
Purity control corrects
this area. Disk magnets or rotatable
disk magnets correct
these areas (a-d).
b
c
a
d
ba
cd
Fig. 3-3
GREEN
BLUE RED
Purity Control
}normal

–15 –
KV-G21L3
RM-883
R G B
G
R
B
Center dot
V.STAT Magnet
C board RV 701
SCREEN (G2)
3-2. CONVERGENCE
Preparation :
•Before starting this adjustment, adjust the focus, horizontal size
and vertical size.
•Minimize the brightness setting.
•Provide dot pattern.
(1) Horizontal and Vertical Static Convergence
1. (Moving vertically), adjust the V.STAT magnet so that the red,
green and blue points are on top of each other at the center of
the screen.
2. (Moving horizontally), adjust the H.STAT magnet so that the
red, green and blue points are on top of each other at the center
of the screen.
3. Tilt the V.STAT magnet and adjust the static convergence by
opening or closing the V.STAT magnet.
B
R
B
R
ab
bb
a
b
a
b
a
R
G
B
b
B
G
R
b
ba
a
1
2
3
GG
B G R
R G B
•Operation of V.STAT magnet.
If the V.STAT magnet is moved in the direction of the aand
barrows, the red, green and blue points move as shown
below.
•Operation of BMC (Hexapole) magnet.
If the blue or red point does not converge with the other two
points, perform following steps:
Move BMC magnet (a) to correct insufficient H.static
convergence.
Rotate BMC magnet (b) to correct insufficient V.static
convergence
In either case, repeat Beam Landing Adjustment.
a
BMC magnet
b
V.STAT
Purity

–16 –
KV-G21L3
RM-883
3. Move the deflection yoke as shown in the figure below and
optimize the convergence.
4. Tighten the deflection yoke screws.
5. Install the deflection yoke spacer.
(2) Dynamic Convergence Adjustment
Preparation :
•Before starting this adjustment, adjust the horizontal static
convergence and the vertical static convergence.
1. Slightly loosen the deflection yoke screws.
2. Remove the deflection yoke spacer.
(3) Screen-corner Convergence
a-d : screen-corner
misconvergence
ba
cd
B G R B
G
R
R
G
BR G B
R G B R
G
B
B
G
RB G R
R G BB G R
B G RR G B
a
d
c
bFix a Permalloy assy
corresponding to the
misconverged areas
Permalloy assembly

–17 –
KV-G21L3
RM-883
3-3. FOCUS ADJUSTMENT
Adjust FOCUS control on the flyback transformer for the best
focus.
Note: ScreenVR is not use.
SERVICE
MUTING
1 F
DATA
RDR
Adjustment Item
09
Item number
WRITE1 FRDR09
0
Executes the writing
a. AN ITEM OF ADJUSTMENT
b. METHOD OF CANCELLATION FROM SERVICE
MODE
Set the standby condition (Press POWER button on the
commander) and then press POWER button again, hereupon it
becomes TV mode.
c. METHOD OF WRITE FOR MEMORY
1) Set to Service Mode.
2) Press 1(UP) and 4(DOWN) to select the item of
adjustments.
3) Press [MUTING] button and it will indicate WRITE on screen.
4) Press -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.
Item
number Note
Adjustment
item Initial DATA
09 RDR 25 WHITE POINT R
0A GDR 20 WHITE POINT G
0B BDR 20 WHITE POINT B
3-4. G2 (SCREEN) AND WHITE BALANCE
ADJUSTMENTS
1. G2 (SCREEN) ADJUSTMENT (RV701)
1) Set the PICTURE and BRIGHTNESS to normal.
2) Put to VIDEO input mode without signals.
3) Connect R, G and B of the C board cathode to the oscilloscope.
4) Adjust G2 (RV701) volume to the value below.
2. WHITE BALANCE ADJUSTMENTS
1) Set to Service Mode.
2) Input an entire white signal.
3) Set the PICTURE to maximum.
4) Select RDR(09) with 1and 4, and then set the level to 25
with 3and 6.
5) Select GDR(0A) and BDR(0B) with 1and 4and adjust the
level with 3and 6for the best white balance.
6) Write into the memory by pressing [MUTING] then -.
0 V
177 ± 2 V DC
FOCUS
SCREEN
(NOT USED)
FLYBACK TRANSFORMER (T851)
177±2V

– 18 –
KV-G21L3
RM-883 SECTION 4
SELF DIAGNOSIS FUNCTION
If no acknowledgement is returned from a device which is turned "ON", the device has a problem.
In this case, one of the LED's responding to the problem device will flicker a defined number of times.
Flickering is operated by lighting the LED's for 60ss each time.
The flickering frequency responding to each failed device is shown below.
All the devices are checked one after another from the left of the table.
If an error is found, the responding LED will start flickering.
So, if more than 1 device have failed, only the one on the left side will flicker.
Device
Flickering
Frequency
NONVOLATILE
MEMORY
1
—
—
Y/C JUNGLE
3
—
—
—
—
—
—

– 19 –
KV-G21L3
RM-883
SECTION 5
CIRCUIT ADJUSTMENTS
Entering service mode
With the unit on standby
↓
DISPLAY
↓
5
↓
VOL (+)
↓
POWER
The operation sequence puts the unit into service mode.
5-1. ADJUSTMENTSWITH COMMANDER
Service adjustments are made with the RM-883 that comes with
this unit. [1], [4] Raise/lower the service item number
[3], [6] Raise/lower the data
[MUTING] Writes
[0] Executes the writing
SELECT p
PIC MODE p
SOUND
MODE VOL PROGR
RM-883 g
POWER
DISP
REVEAL
MUTING
TV
VIDEO
HOLD
TEXT
A/B
ENLARGE
WIDE/
V-ZOOM
WAKE UP
INDEX
SLEEP
TEXT CLR
++
123
46
789
0
+ p
– p
5
TV
[7], [0] All data becomes the values in memory
[8], [0] All user control goes to the standard state
[5], [0] Service data initialization (Be sure not to use
usually).
[2], [0] Write 50Hz adjustment data to 60Hz, or
viceversa.
The screen display is :
SERVICE Mode08
Data
RGB
50 Depends on the signals
PAL, SECAM : 50
NTSC : 60
10000000
Adjustment item
00
Item number
[1], [4] Select the adjustment item.
↓
[3], [6] Raise/lower the data.
↓
[MUTING] Writes
↓
[0] Executes the writing.
RM-883

–20 –
KV-G21L3
RM-883
5-2. ADJUSTMENT METHOD
Item Number 08
This explanation uses V-SHIFT as an example.
1. Select 08 V-SHIFT 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 0F for PAL
reception.)
4. Write with the [MUTING] button. (The SERVICE display will
change to WRITE)
5. Execute the writing with the [0] button. (The WRITE
display will be changed back to SERVICE.)
Use the same method for Items Number 00-33. Use [1] and [4] to
select the adjustment item, use [3] and [6] to adjust, write with
[MUTING], then execute the write with [0].
Write executed with [0] .
Written with the [MUTING].
WRITE
WRITE
GREEN0CVSF08
SERVICE
50
50
50
GREEN0CVSF08
GREEN
The WRITE display
will be changed back
to SERVICE.
0CVSF08
Adjust with the [3] and [6] buttons.