Sony TRINITRON KV-PG21M70 User manual

REVISION HISTORY BG-2T
MODEL
KV-PG21M70
KV-PG21P40/L
(Pearl Blue)
KV-PG21P40/N
(Champange Gold)
KV-PG21P40
KV-PG21P70
PA RT N O. : 9-872-260-01
NO DATE DESCRIPTION OF REVISION
CHASSIS

MODEL COMMANDER DEST. CHASSIS NO.
CHASSIS
TRINITRON ® COLOR TV
SERVICE MANUAL BG-2T
MODEL COMMANDER DEST. CHASSIS NO.
KV-PG21M70 RM-952 E SCC-U68A-A
KV-PG21P40/L RM-952 Malaysia SCC-U71A-A
(Pearl Blue) (Blue)
KV-PG21P40/NRM-952 Malaysia SCC-U71B-A
(Champange Gold) (Silver)
KV-PG21P40 RM-952 Singapore SCC-U66A-A
KV-PG21P70 RM-952 E SCC-U68B-A
TV
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KV-PG21P40/PG21M70/PG21P70
RM-952
SPECIFICATIONS
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.
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 REMOVINGTHE
ANODE.
Note
Power requirements 110-240 V AC, 50/60 Hz
220-240 V AC, 50/60 Hz Malaysia only
Power consumption (W) Indicated on the rear of the TV
Television system B/G KV-PG21P70/PG21P40 only
B/G, I, D/K, M KV-PG21M70 only
Color system PAL, PAL 60, NTSC3.58 (AV IN), NTSC4.43 KV-PG21P70/PG21P40 only
PAL, PAL 60, SECAM, NTSC 3.58, NTSC 4.43 KV-PG21M70 only
Channel coverage
B/G VHF: E2 to E12
UHF: E21 to E69
CATV: S01 to S03, S1 to S41
I UHF: B21 to B68 KV-PG21M70
CATV: S01 to S03, S1 to S41
D/K VHF: C1 to C12, R1 to R12 KV-PG21M70
UHF: C13 to C57, R21 to R60
CATV: S01 to S03, S1 to S41, Z1 to Z39
M VHF: A2 to A13 KV-PG21M70
UHF: A14 to A79
CATV: A-8 to A-2, A to W+4, W+6 to W+84
˘(Antenna) 75-ohm external terminal
Audio output (Speaker) 3W
Number of terminal
DVideo Input: 2* Output: 1 Phono jacks; 1 VP-P, 75 ohms * One input lines available
≥Audio Input: 2* Output: 1 Phono jacks; 500 mVrms * One input lines available
(Earphone) Output: 1 Monaural minijack
Picture tube 21 in.
Tube size (cm) 54 Measured diagonally
Screen size (cm) 51 Measured diagonally
Dimension (w/h/d, mm) 497 x 458 x 487
Mass (kg) 25
Design and specifications are subject to change without notice.

KV-PG21P40/PG21M70/PG21P70
RM-952
– 3 –
TABLE OF CONTENTS
SELF DIAGNOSTIC FUNCTION ................................... 4
1. GENERAL ................................................................. 7
2. DISASSEMBLY
2-1. Rear Cover Removal ............................................... 14
2-2. Speaker Removal .................................................... 14
2-3. Chassis Assy Removal ............................................ 14
2-4. Service Position ...................................................... 14
2-5. Terminal Bracket Removal ..................................... 14
2-6. Replacement Of Parts ............................................. 15
2-6-1. Replacement Of Light Guide ....................... 15
2-6-2. Replacement Of Power Button .................... 15
2-7. Picture Tube Removal ............................................. 15
3. SET-UP ADJUSTMENTS
3-1. Beam Landing ......................................................... 16
3-2. Convergence ............................................................ 17
3-3. Focus Adjustment.................................................... 19
3-4. G2 (SCREEN) and white balance adjustments ...... 19
4. CIRCUIT ADJUSTMENTS
4-1. Adjustment With Commander ................................ 20
4-2. Adjustment Method ................................................ 20
4-3. Picture Quality Adjustment .................................... 25
4-4. Deflection Adjustment ............................................ 25
4-5. A Board Ajustment After IC003 (MEMORY)
Replacement ............................................................ 25
4-6. Picture Distortion Adjustment ................................ 26
Section Title Page Section Title Page
5. DIAGRAMS
5-1. Block Diagram ........................................................ 27
5-2. Circuit Boards Location .......................................... 29
5-3. Schematic Diagram ................................................. 30
(1) Schematic Diagram of A Board ........................ 31
(2) Schematic Diagram of CV Board ..................... 35
5-4. Voltage Measurement ............................................. 37
5-5. Waveforms .............................................................. 40
5-6. Printed Wiring Boards and Parts Location ............. 41
5-7. Semiconductors ....................................................... 44
6. EXPLODED VIEWS
6-1. Picture tube and Chassis ......................................... 46
7. ELECTRICAL PARTS LIST.................................... 47

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KV-PG21P40/PG21M70/PG21P70
RM-952
The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY/TIMER lamp will automati-
cally 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)
• Horizontal
deflection
overdrive
• White balance
failure (no
PICTURE)
• Vertical deflection
stopped
• Micro reset
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.
• Power line is shorted or
power supply is stopped.
• Vertical deflection pulse
is stopped
• Power is shut down
shortly, after this return
back to normal.
• Detect Micro latch up.
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.
SELF DIAGNOSTIC FUNCTION
No. of times
STANDBY/TIMER
lamp flashes
Does not light
2 times
4 times
—
Self-diagnostic
display/Diagnostic
result
—
002:000 or
002:001~255
004:000 or
004:001~225
101:00 or
101:001~225
Probable
Cause
Location
• Power cord is not
plugged in.
• Fuse is burned out
F4601 (F)
• H.OUT Q801 is shorted.
(A board)
• -13V is not supplied.
(A board)
• IC 551 faulty (A board)
• Discharge CRT
(CV Board)
• Static discharge
• External noise

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KV-PG21P40/PG21M70/PG21P70
RM-952
2. DISPLAY OF STANDBY/TIMER LIGHT FLASH COUNT
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 DISPLAY
For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be con-
firmed, 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:
[Screendisplay] /channel [5] /Sound volume [-] /Power ON
˘
Note that this differs from entering the service mode (mode volume [+]).
Self-Diagnosis screen display
STANDBY/SLEEP lamp
Lamp ON 0.3 sec.
Lamp OFF 3 sec.
Lamp OFF 0.3 sec.
2 times
4 times
Diagnostic Item Flash Count*
+B overcurrent/overvoltage 2 times
Vertical deflection stopped 4 times
* One flash count is not used for self-diagnostic.
002 : 000
004 : 000
Numeral "0" means that no fault has been detected.
101 : 000
SELF DIAGNOSTIC

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KV-PG21P40/PG21M70/PG21P70
RM-952
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-DIAGNOSTIC CIRCUIT
[+BovercurrentªOCPº] Occurs when an overcurrent on the +B(135) line is detected by Q500. If Q500 go to
ON and the voltage to pin 50 of IC301 more than 3.5V when V.SYNC is more than
seven verticals in a period, the unit will automatically turn off.
[Verticaldeflectionstopped] Occurs when an absence of the vertical deflection pulse is detected by Pin 17 and
IC001 shut down the power supply.
[ hitebalancefailure] 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.)
IC301
Y/CHROMA JUNGLE
IC001
SYSTEM
IC003
MEMORY
MP/
PROTECT O-LED
IO-8DAT B-DAT
IO-SDAT
5
50 51
54
SDA 8
FROM
[+B] Q500
17
[V]
D553
53

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SECTION 1
GENERAL
The operating instruction mentioned here are partial abstracts
from the Operating Instruction Manual.The page numbers of
the Operating Instruction Manual remain as in the manual.
AGetting Started
Connect the antenna cable (not supplied) to 8at the
rear of the TV.
Tip
• You can also connect your TV to other optional components.
(See E)
Plug in the power cord, then press !on the TV to
turn it on.
Press SELECT and PROGR + on the TV at the same time
for one to two seconds to preset the channels
automatically. (See J)
Tip
• To stop the automatic channel presetting, press SELECT
twice.
b
PROGR
SELECT
b
SELECT
Press SELECT on the remote until “LANGUAGE/ :
ENGLISH”appears on the screen, then press + or –to
change the on-screen display language.
Insert the batteries (supplied) into the remote.
Note
• Do not use old batteries nor use different types of batteries
together.
Step 1
Step 2
Step 3
Step 4
Step 5
BWARNING
•Dangerously high voltages are present inside the TV.
•TV operating voltage: 110 –240 V AC. (Malaysia: 220 –240 V AC)
•Do not plug in the power cord until you have completed making all other connections;
otherwise a minimum leakage current might flow through the antenna and other terminals to
ground.
•To avoid battery leakage and damage to the remote, remove the batteries from the remote if
you are not going to use it for several days. If any liquid that leaks from the batteries touches
you, immediately wash it away with water.
To prevent fire or shock hazard, do not expose
the TV to rain or moisture.
Do not operate the TV if any liquid or solid object
falls into it. Have it checked immediately by
qualified personnel only.
Do not open the cabinet and the rear cover of the
TV as high voltages and other hazards are
present inside the TV. Refer servicing and
disposal of the TV to qualified personnel.
Your TV is recommended for home use only.
Do not use the TV in any vehicle or where it may
be subject to excessive dust, heat, moisture or
vibrations.
Do not block the ventilation openings of the TV.
Do not install the TV in a confined space, such
as a bookcase or built-in cabinet.
For children’s safety, do not leave children alone
with the TV. Do not allow children to climb onto
it.
Clean the TV with a dry and soft cloth. Do not use
benzine, thinner, or any other chemicals to clean
the TV. Do not scratch the picture tube.
For your own safety, do not touch any part of the
TV, the power cord and the antenna cable during
lightning storms.
Do not install the TV in an unstable position.
Use a proper TV stand. Do not place any objects on the TV.
CSecuring the TV
B KV-PG21/TG21 only
To prevent the TV from falling, use the supplied screws, clamps and band to secure the TV .
Screw the band to the TV stand and to the
provided hole at the rear of your TV.
(1) Put a cord or chain through the
clamps.
(2) Screw one clamp to a wall or pillar
and the other clamp to the provided
hole at the rear of your TV.
Note
•Use only the supplied screws. Use of other screws may damage the TV.
20 mm
3.8 mm
screws clamps band
or
Do not plug in too many appliances to the same
power socket. Do not damage the power cord.
Pull the power cord out by the plug. Do not pull
the power cord itself. Even if your TV is turned
off, it is still connected to the AC power source
(mains) as long as the power cord is plugged in.
Unplug the TV before moving it or if you are not
going to use it for several days.
WARNING (continued)
!
PROGR
SELECT
(MONO)
LR
L(MONO)R
861
3
4
7
92
5
0
qa
qs
★
★
DTV front and rear panels
TV front panel
TV rear panel
Button Function
1!Turn off completely or turn on the TV.
2Remote control sensor.
31Standby indicator.
3Stereo/bilingual indicator. (KV-TG21 only)
3Wake Up indicator.
4PROGR +/–Select program number.
52+/–* Adjust volume.
6tSelect TV or video input.
7SELECT Select the desired item.
8iHeadphone terminal. (KV-TG21 only)
8Earphone terminal. (KV-PG21/PG14 only)
9,qa tVideo input terminal.
08Antenna terminal.
qs TMonitor output terminal.
* You can also use the 2+/–buttons on the TV to work as the +/–buttons on the remote.
★The R (audio input) jacks are only available for KV-TG21 only.

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KV-PG21P40/PG21M70/PG21P70
RM-952
EConnecting optional components
Connecting to the video input terminal ( t)
TV front panel
Camcorder
Audio/Video cable
(not supplied)
Note
•Do not connect video equipment to
t (video input) at the front and the rear of your TV at
the same time; otherwise the picture will not be displayed properly on the screen.
TV rear panel
Audio/Video cable
(not supplied)
Connecting to the monitor output terminal (T)
(MONO)
LR
★
L(MONO)R
★
VCR
Video game
equipment
L(MONO)R
★
VCR
Audio system
Audio/Video cable
(not supplied)
TV rear panel
★The R (audio input) jacks are only available for KV-TG21 only.
Antenna cable
(not supplied)
FTroubleshooting
If you find any problem while viewing your TV, please check the following
guide. If any problem persists, contact your Sony dealer.
Snowy picture,
noisy sound
Good picture,
noisy sound
No picture,no sound
Good picture, no sound
Dotted lines or stripes
Double images or
“ghosts”
No color
Abnormal color
patches
Teletext display is
incomplete (snowy
picture or double
images).
(KV-TG21M61 only)
The 1(standby)
indicator on your TV
flashes red several
times after every
three seconds.
TV cabinet creaks.
A "boom" sound is
heard when the TV is
turned on.
Symptom Solutions
•Check the antenna cable and connection on the TV, VCR and on the wall.
•Preset the channel manually again. (See J)
•Check the antenna setup. Contact a Sony dealer for advice.
•Select the appropriate TV system. (KV-PG21M70/PG14M40/TG21M61
only) (See J)
•Press A/B until the sound is optimal. (KV-TG21M61 only)
•Check the power cord, antenna and the VCR connections.
•Press ?/1 (power) or !(main power) to turn on the TV.
•Press 2+ to increase the volume level.
•Press %to cancel the muting.
•Do not use a hair dryer or other equipment near the TV.
•Check the antenna setup. Contact a Sony dealer for advice.
•Use the fine tuning ("FINE") function. (See J)
•Turn off or disconnect the booster if it is in use.
•Check the antenna setup. Contact a Sony dealer for advice.
•Select the appropriate color system. (See J)
•Adjust the color level. (See K)
•Check the antenna setup. Contact a Sony dealer for advice.
•
Keep external speakers or other electrical equipment away from the TV.
Press !(main power) to turn off the TV for about 15 minutes, then turn it
on again to demagnetize the TV.
•Check the antenna cable and connection on the TV, VCR and on the wall.
•Use the fine tuning (“FINE”) function. (See J)
•Check the antenna setup. Contact a Sony dealer for advice.
•Count the number of times the 1(standby) indicator flashes. Press !
(main power) to turn off your TV. Contact your nearest Sony service
center.
•Changes in room temperature sometimes make the TV cabinet expand or
contract, making a noise. This does not indicate a malfunction.
•The TV's demagnetizing function is working. This does not indicate a
malfunction.
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qa
0
qs
qd
qf
qg
qh
qj
qk
ql 8
9
7
6
5
4
3
2
1
HRemote control
Button Function
1?/1 Turn off temporarily or
turn on the TV.
2aDisplay the TV program.
3JUMP Jump to previous
program number.
4PROGR +/–Select program number.
52+/–Adjust volume.
6SELECT Select the desired item.
7PIC MODE Select picture mode.
9+/–Adjust items.
0 Display on-screen
information.
qa %Mute the sound.
qd tSelect TV or video input.
qf 0 –9, ÷Input numbers.
Timer operations
qj Set TV to turn on
automatically.
qk Set TV to turn off
automatically.
Sound mode operations (KV-TG21M61 only)
qg SOUND MODE Select sound mode.
Stereo/bilingual operations (KV-TG21M61 only)
qh A/B Select stereo/bilingual
mode.
Teletext operations (KV-TG21M61 only)
8x(red, green, Access a FASTEXT
yellow, blue) menu.
0Reveal concealed
information
qs Display Teletext
broadcast.
qd Stop Teletext display from
scrolling.
qh Enlarge the Teletext
display.
qj Display Teletext service
contents.
qk Show TV screen while
waiting for Teletext page
.
ql FAVORITE Not function for your TV.
See
–
–
–
–
–
–
K
–
–
–
–
–
I
I
K
M
N
N
N
N
N
N
N
–
ISetting the timers
You can turn on and off your TV by using the and buttons respectively.
Setting the Wake Up timer
1
Press until the desired period of time appears
on the screen.
The Wake Up timer starts immediately after you
have set it.
2
Select the program number or video input you
want to wake up to.
3
Press \/1, or set the Sleep timer if you want
the TV to turn off automatically.
The indicator on the TV lights up orange when
the TV goes into standby mode.
Setting the Sleep timer
Press until the desired period of time appears
on the screen.
The Sleep timer starts immediately after you have
set it.
Notes
•You can also cancel the Wake Up and Sleep timers by turning off the TV’s main power.
•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 goes into standby mode.
\/1
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WAKE UP TIMER:0H10M
WAKE UP TIMER:OFF WAKE UP TIMER:12H00M
(After 10 minutes)
(No Wake Up timer) (After 12 hours)
SLEEP TIMER:30M SLEEP TIMER:60M
SLEEP TIMER:OFF SLEEP TIMER:90M
(After 30 minutes)
(No Sleep timer)
(After 60 minutes)
(After 90 minutes)

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KV-PG21P40/PG21M70/PG21P70
RM-952
Number
buttons
SELECT
PROGR +/–
+ or –
PIC MODE
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J Presetting channels
You can automatically preset up to 100 TV channels in numerical sequence
from program number 1, or manually preset desired channels and channels
that cannot be preset automatically.
Presetting channels automatically
from a specified program number
1 Press SELECT until “AUTO PROGRAM”appears
on the screen.
2 Press + or –once to enter the “AUTO
PROGRAM”mode.
The on-screen display will start flashing.
3Press PROGR +/–or the number buttons until
the desired program number appears on the
screen.
4Press + or –to start presetting channels
automatically.
Presetting channels manually
1Press SELECT until “MANUAL PROGRAM”
appears on the screen.
2 Press + or –once to enter the “MANUAL
PROGRAM”mode.
3 Press PROGR +/–or the number buttons until
the desired program number appears on the
screen.
4 Press + or –until the desired channel picture
appears on the screen.
5 To preset other channels manually, repeat steps
3 to 4.
Presetting channels (continued)
To change the TV system setting (KV-PG21M70/PG14M40/TG21M61 only)
If the picture or sound is abnormal when receiving programs through the 8(antenna)
terminal
(1) Press SELECT until “TV SYS”appears on the screen.
(2) Press + or –to select the appropriate TV system until the picture or sound quality
is optimal.
B/G I D/K M
To change the color system setting
If the color is abnormal when receiving programs through the 8 (antenna) terminal
or the t(video input) terminal
(1) Press SELECT until “COLOR SYS”appears on the screen.
(2) Press + or –to select the appropriate color system until the color is optimal.
AUTO PAL SECAM NTSC3.58 NTSC4.43
Note
•The color system “SECAM”is available for KV-PG21M70/PG14M40/TG21M61 only.
To skip program numbers
(1) Press PROGR +/–or the number buttons until the unused or unwanted program
number appears on the screen.
(2) Press SELECT until “MANUAL PROGRAM”appears on the screen.
(3) Press + or –once to enter the “MANUAL PROGRAM”mode.
(4) Press PIC MODE to skip the unused or unwanted program number.
(5) Press SELECT to exit the “MANUAL PROGRAM”mode.
Note
•To restore the skipped program number again, preset the channel automatically or manually.
To use the fine tuning function
The fine tuning (FINE) function may help to reduce the following problems:
incomplete Teletext display (KV-TG21M61 only), double images and lines moving
across the TV screen.
You can use the fine tuning function as below:
(1) Select the program number you want to adjust.
(2) Press SELECT until “MANUAL PROGRAM”appears on the screen.
(3) Press + or –once to enter the “MANUAL PROGRAM”mode.
(4) Press to display “FINE”on the screen.
(5) Press + or –continuously until the above problems are minimized.
The + or –icon on the screen flashes while tuning.
(6) Press SELECT to exit the “MANUAL PROGRAM”mode.
KCustomizing the picture and sound
You can customize the picture and sound by selecting the picture and sound
modes or by adjusting its settings.
Selecting the picture mode
Press PIC MODE to select the desired picture mode.
Select To
“DYNAMIC”view high contrast pictures.
“STANDARD”view normal contrast pictures.
“SOFT”view mild pictures.
Selecting the sound mode
BKV-TG21M61 only
Press SOUND MODE to select the desired sound
mode.
Select To
“9 DYNAMIC”listen to dynamic and clear
sound that emphasizes the low
and high sound.
“9 DRAMA”listen to sound that emphasizes
vocals and background music.
“9 SOFT”listen to soft sound.
Adjusting the picture and sound settings
1
Press SELECT until the desired setting appears.
Each time you press SELECT, the setting item will change as follows:
2
Press + or –to adjust the item.
3
To adjust other items, repeat steps 1 to 2.
Notes
•“BASS”, “TREBLE”and “BALANCE”can be adjusted for KV-TG21M61 only.
•“HUE”can be adjusted for the NTSC color system only.
•Reducing “SHARP”can also reduce picture noise.
SOUND
MODE
PIC MODE
SELECT
+ or –
PICTURE COLOR BRIGHT HUE
BALANCE TREBLE BASS SHARP
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LAdjusting the picture position
B KV-PG21M70/PG21P70/PG21P40/TG21M61 only
If the picture is slanting, you can adjust the picture position using the
“PIC ROTATION”function until it is optimal.
1Press SELECT repeatedly until “PIC ROTATION”
appears on the screen.
2Press + or –to adjust the picture position.
The
+
or icon on the screen flashes while
adjusting.
Note
•To reduce the slanting picture, keep external speakers or other electrical equipment away
from the TV.
+ or –
SELECT
Slanting Optimal
FAVORITE
Good morning!
Good morning!

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KV-PG21P40/PG21M70/PG21P70
RM-952
TV
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MAIN
(Main sound)
SUB
(Sub sound)
t
t
A/B
NICAM
(Stereo sound)
MONO
(Regular sound)
t
t
NICAM MAIN
(Main sound)
NICAM SUB
(Sub sound)
MONO
(Regular sound)
tt
t
NICAM MAIN
(Main sound)
MONO
(Regular sound)
t
t
MONO
(Regular sound)
STEREO
(Stereo sound)
t
t
M Enjoying stereo or bilingual
programs
B KV-TG21M61 only
You can enjoy stereo sound or bilingual programs of NICAM and A2 stereo
systems by using the A/B button.
Notes
•If the stereo sound is noisy when receiving a stereo program, select “MONO”. The sound
becomes monaural, but the noise is reduced.
•If the sound is distorted when receiving a monaural program through the 8 (antenna)
terminal, press A/B repeatedly until “MONO”appears on the screen. To cancel the monaural
sound setting, press A/B again until “AUTO”appears on the screen.
When receiving a NICAM program
Broadcasting On-screen display (Selected sound)
NICAM
stereo
NICAM
bilingual
NICAM
monaural
When receiving an A2 program
Broadcasting On-screen display (Selected sound)
A2
stereo
A2
bilingual
NViewing Teletext
B KV-TG21M61 only
Some TV stations broadcast an information service called Teletext which
allows you to receive various information, such as stock market reports and
news.
You can use the buttons on the remote to view Teletext.
To Do this
display a Teletext Press . Each time you press , the
page on the screen changes as follows:
TV picture Teletext tTeletext and TV tTV.
If there is no Teletext broadcast, “100”is
displayed at the top left corner of the
screen.
check the contents Press .
of a Teletext service An overview of the Teletext contents,
including page numbers, appears on the
screen.
select a Teletext page Press the number buttons to enter the
three-digit page number of the desired
Teletext page. If you make a mistake,
reenter the correct page number. To
access the next or previous page, press
PROGR +/–.
hold (pause) a Press to display the symbol “z”at
Teletext display the top left corner of the screen. To
resume normal Teletext viewing, press
or .
reveal concealed Press .
information (e.g., To conceal the information, press the
an answer to a quiz) button again.
enlarge the Teletext Press . Each time you press , the
display Teletext display changes as follows:
Enlarge upper half tEnlarge lower half
tNormal size.
stand by for a Teletext 1 Enter the Teletext page number that
page while watching you want to refer to, then press .
a TV program 2 When the page number is displayed,
press to show the text.
select a FASTEXT Press x(red, green, yellow and blue)
menu or the colored that corresponds to the desired menu or
boxes page number.
turn off Teletext Press a.
Note
•The FASTEXT feature can be used only when the FASTEXT broadcast is available.
TV
123
46
789
-0
5
JUMP
SOUND
MODE
FAVORITE
PROGR
2
x (red,
green,
yellow,
blue)
a

– 11 –
KV-PG21P40/PG21M70/PG21P70
RM-952
2-6. REPLACEMENT OF PARTS
For replacements of light guide,unscrew them,
exchange with new parts and fix them with
screws respectively.
2-6-2. Replacement of Power Button
2-6-1. Replacement of Light Guide
One screw
(+BVTP 3 × 12)
1Push to direction of arrow
and remove
2-5. TERMINAL BRACKET REMOVAL
SECTION 2
DISASSEMBLY
2-1. REAR COVER REMOVAL 2-2. SPEAKER REMOVAL 2-3. CHASSIS ASSY REMOVAL
1Seven screws
(+BVTP 4 × 16)
1Rear Cover
1Four screws
washer head
(BVTP 3 × 12)
Speaker
Push claw
2-4. SERVICE POSITION
Caution:
Do not take out CRT support block while TV set in
standing position.
Note:
Undress necessary wires that creates tension while
placing the chassis into Service Position.
1One screw
(+BVTP 4 × 16)
2Terminal Bracket

–12 –
KV-PG21P40/PG21M70/PG21P70
RM-952
2-7. PICTURE TUBE REMOVAL
Note:
•Please make sure the TV set is not in standing position before removing necessary
CRT support located on bottom right and left.
!™
!£
8Demagnetic coil
4Four screws
(washer head)
(BVTP 3 × 12)
!º Two screws
(Tapping 5+
Crown Washer)
3Speaker
(5 × 9cm)
6Tension
spring
7Chassis assy
5Deflection
yoke
2CV board
1Anode cap
Coating earth assy
!∞ Picture tube
!¢ Cushion
9Two screws
(Tapping 5 +
Crown Washer)
!¡ Holder DGC
Cushion (50x550) DGC
Cushion (35x250) DGC
A Board
CRT Support Block
Slim Beznet
CRT Support Block
Screw Location
•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.
2Using a thumb 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.
•HOW TO HANDLE AN ANODE-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-cap.
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.
a
a
b
b
Anode button
c

– 13 –
KV-PG21P40/PG21M70/PG21P70
RM-952
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 switches 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. Pattern Generator
2. Degausser
3. Oscilloscope
SECTION 3
SET-UP ADJUSTMENTS
................................................................................................................................................................................................................................
normal
Preparation :
In order to reduce the influence of geomagnetism on the
set's 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. 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 3-4.)
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 screws and DY spacers.
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
Fig. 3-4
Fig. 3-3
Fig. 3-2
Purity control
Red
Blue
Green
Purity control
corrects this area. Disk magnets or rotatable
disk magnets correct these
areas (a-d).
Deflection yoke positioning
corrects these areas.
a
b
b
c
c
d
d
a

–14 –
KV-PG21P40/PG21M70/PG21P70
RM-952
3-2. CONVERGENCE
Preparation :
• Before starting this adjustment, adjust the focus, horizontal
size and vertical size.
• Receive dot/hatch signal.
• Pic mode: Soft.
(1) Horizontal and Vertical Static Convergence
1. (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.
2. (Moving horizontally), adjust the H.STAT VR control 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 adjust-
ments while tracking.)
1
3
Center dot
R G B
R
G
B
H. STAT VR V. STAT
Magnet
RV702
H. STAT
CV Board
• Operation of V. Stat magnet
If the V. Stat magnet is moved in the "a" and "b" arrows, the
red, green and blue dots move as shown below.
BMC (Hexapole)
V.STAT
DY pocket
Purity
V.STAT
BMCPurity
2
R
R
G
G
B
B
a
a
b
b b
R
RG GB B
ab
ab
R
R
G
G
B
B
a
a
b
b
b
4BMC (Hexapole) Magnet.
If the red, green and blue dots are not balanced or aligned,
then use the BMC magnet to adjust in the manner described
below.
RG B R G B R GB
RB
RG
GGB
RB

–15 –
KV-PG21P40/PG21M70/PG21P70
RM-952
TLH Insert TLH Correction Plate to DY Pocket (Left or
Right)
YCH Rotate YCH VOL on DY
TLV Rotate TLV VOL ON DY
XCV Rotate XCV Adj core on DY
ON DY:
YCH
TLV
DY pocket
DY pocket
XCV
(2) Dynamic Convergence Adjustment
Preparation:
Before starting this adjustment, adjust the horizontal static
convergence and the vertical static convergence
RB
RB
TLH TLV
YCH XCV
B
R
R
B

–16 –
KV-PG21P40/PG21M70/PG21P70
RM-952
3-3. FOCUS ADJUSTMENT
FOCUS adjustment should be completed before W/B adjustment.
1. Receive digital monoscope pattern.
2. Set "Picture Mode" to "DYNAMIC".
3. Adjust focus VR so that the center of screen becomes
just focus.
4. Change the receiving signal to white pattern and blue back.
5. Confirm magenta ring is not noticeable. Incase magenta is
very obvious, adjust focus VR to take balance of magenta
ring and focus.
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 CV 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.
0 V
Cathode setting voltage:
175 V ±2 (VDC)
2.A. WHITE BALANCE ADJUSTMENT
1) Set to Service Mode (Refer Section 4-1: ADJUSTMENTS
WITH COMMANDER).
2) Input white raster signal.
3) Set 49 (ABL) and IF (VP2) service mode to 00.
4) Set Picture to DYNAMIC.
5) Select OB (RDR) with [1] and [4], and set the level to 25
with [3] and [6] for best white balance.
6) Select OC 'GDR' and OD 'BDR' 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].
8) Set back 49 'ABL' and IF 'VP2' service mode to original data.
2.B. SUB BRIGHT ADJUSTMENT
1) Set to service mode.
2) Set 49(ABL) and IF (VP2) service mode to 00
3) Input a staircase signal of black to white from the pattern
generator.
4) BRIGHTNESS .... 50%.
PICTURE ............ MINIMUM
5) Select OE 'SBR' with [1] and [4], and adjust OE 'SBR' level
with [3] and [6] so that the second stripe from the right is
dimly lit.
6) Write into the memory by pressing [MUTING] then [0].
7) Set back 49 (ABL) and IF (VP2) service mode to original data.
White
second from the right
Black
FOCUS
SCREEN
FLYB ACK TRANSFORMER (T503)
a
d
c
b
a to d : Permalloy assembly
Fix a Permalloy assy
corresponding to the
misconverged areas
ba
cd
a-d : screen-corner
misconvergence
(3) Screen-corner Convergence

– 17 –
KV-PG21P40/PG21M70/PG21P70
RM-952
SECTION 4
CIRCUIT ADJUSTMENTS
4-1. ADJUSTMENT WITH COMMANDER
Service adjustments to this model can be performed using the
supplied Remote Commander RM-952
a. ENTERING SERVICE MODE
With the unit on standby
This operation sequence puts the unit into service mode.
The screen display is :
b. METHOD OF CANCELLATION FROM SERVICE
MODE
Set the standby condition (Press [POWER] button on the com-
mander), 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.
n[DISPLAY] n5nVOL (+) n[POWER]
4-2. ADJUSTMENT METHOD
Item Number 00 HPS
This explanation uses H Shift as an example.
1. Select “00 HPS” with the 1and 4buttons.
2. Raise/lower the data with the 3and 6buttons.
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 :-
1, 4Select the adjustment item.
↓
3, 6Raise/lower the data value.
↓
[MUTING] Writes.
↓
-Executes the writing.
e. OTHER FUNCTION VIA REMOTE COMMANDER
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.)
2, -Copy and write all data.
[MUTE], -Write 50Hz adjustment data to 60Hz or vice
versa.
Use the same method for all Items. Use 1and 4to select the
adjustment item, use 3and 6to 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.
PAL,SECAM:50
NTSC :60
HPS 33 SERVICE
Data
Mode
Item
Adjustment
Software version
Suffix No
(OEM Code)
Total Power-On time (hours)
00
Item No
Depends on signal
1.6C 00 000A
50
079S
080S
33 SERVICE 50HPS
Adjusted with [3] and [6] buttons.
GREEN
Write with [MUTING]
Write executed with [0]
00
33 WRITE 50HPS GREEN
00
33 WRITE 50HPS
00 RED
The WRITE display
then the display
returns to green
SERVICE

–18 –
KV-PG21P40/PG21M70/PG21P70
RM-952
Adjustment Item Table
Device
Data
Range
Initial
Data Note for Different Data Function
Item Adj.
No. Item
00 HPS 00–3F 24 50/60Hz H Position TDA8843/44(8A)
01 HSZ 00–3F 23 50/60Hz H Size
02 PAP 00–3F 21 50/60Hz Pin Amplitude
03 CPN 00–3F 29 50/60Hz Corner Pin
04 TLT 00–3F 20 50/60Hz Tilt
05 VSL 00–3F 20 50/60Hz V Slope
06 VAP 00–3F 1D 50/60Hz V Amplitude
07 SCO 00–3F 20 50/60Hz S Correction
08 VPS 00–3F 20 50/60Hz V Shift
09 VZM 00–3F 19 Vertical Zoom
0A VSC 00–3F 20 50/60Hz Vertical Scroll
0B RDR 00–3F 25 Dynamic/Others R Drive
0C GDR 00–3F 25 Dynamic/Others G Drive
0D BDR 00–3F 25 Dynamic/Others B Drive
0E SBR 00–7F 4B Sub Brightness
0F PMX 00–3F 27 TV/Video/Teletext Picture Maximum Data
10 PMI 00–3F 05 Picture Minimum Data
11 SHU 00–0F 07 TV/Video Sub Hue
12 SSH 00–03 01 TV/Video Sub Sharpness
13 SC1 00–3F 1F 50/60Hz Sub Color Lower
14 SC2 00–3F 0B 50/60Hz Sub Color Higher
15 FO 00–03 00 TV/Video/Teletext 01 Time Constant
16 AGT 00–3F 30 TV/Video/Teletext AGC Take Over
17 VSW 00–01 0 TV/Video/Teletext Video Mute Switch
18 FOR 00–03 00 Forced Field Frequency
19 DL 00–01 0 De-interlace
1A POC 00–01 0 Fixed 01 Synchro. Mode
1B COR 00–01 0 TV/Video/Teletext Noise Coring
1C RBL 00–01 0 TV/Video/Teletext RGB Blanking
1D YDL 00–0F 08 PAL/NTSC/SECAM Y-Delay
1E VP1 00–FF 00 Extra Bits (see page 20)
1F VP2 00–FF 01 Extra Bits (see page 20)
20 VP3 00–FF 08 Extra Bits (see page 20)
21 WST 00–FF 15 W/G Stereo Threshold MSP3417G(80)
22 WBT 00–FF EA W/G Bilingual Threshold
23 WLL 00–FF 05 W/G Monaural Threshold
24 WAC 00–0F 00 W/G Agreement count
25 WDL 00–FF 30 W/G Search Delay
26 NDL 00–FF 20 NICAM Search Delay
27 SDL 00–FF 10 Stereo Status Read Delay
28 AGC 00–01 01 AGC Switch auto/constant
29 REL 00–3F 28 AGC Gain at Constant Mode
2A CRM 00–01 0 Carrier Muting on/off
2B ACO 00–01 1 Audio Clock-out on/off
2C FP 00–7F 1B FM Prescale for B/G, I, D/K
2D FPM 00–7F 32 FM Prescale for M
2E FH 00–7F 36 FM Prescale for HDEV (non-M)
2F FHM 00–7F 65 FM Prescale for HDEV (M)
30 WGP 00–7F 2A W/G Prescale
31 NIP 00–7F 6D NICAM Prescale
32 ERR 00–FF 50 Auto FM Switch Threshold
33 VOL 00–7F 73 DFP Volume Maximum
34 ING 00–0F 00 M System/non-M/Video Input Gain TDA7438(88)
35 VOM 00–3F 01 M System only Volume Output Gain
36 BCS 00–03 01 Bass Center Shift
37 TCS 00–03 01 Treble Center Shift
38 TXH 00–FF 2D Horizontal Display Position SAA5264(58)
39 TXV 00–3F 2A Vertical Display Position
(line offset from V-sync)
3A THD 00–7F 00 H-sync Active Edge Shift
3B TVD 00–7F 0F V-sync Active Edge Shift
3C HPL 00–01 00 00:Positive, 01:Negative H-sync Polarity Configuration
3D VPL 00–01 00 00:Positive, 01:Negative V-sync Polarity Configuration
3E FPL 00–01 00 00:V-sync second half line, Field Polarity Configuration
01:V-sync first half line
3F FMD 00–03 02 00:Auto, 01:Default, Force Mode
02:Fastext, 03:Top mode

–19 –
KV-PG21P40/PG21M70/PG21P70
RM-952
Adjustment Item Table
Device
Data
Range
Initial
Data Note for Different Data Function
Item Adj.
No. Item
40 TBR 00-0F 08 Set Teletext RGB Brightness SAA5264(58)
42 TCH 00-03 01 Twisted Character Set Configuration
43 BKP 00-3F 00 00 : Positive, 01 : Negative Picture Data at Blanking OFF
44 ODL 00-FF 10 Power ON Delay Other Control
45 OSH 00-3F 0A OSD H Position
46 TSH 00–03 00 00:B/G, 01:I, 02:D/K, 03:M TV System at Auto Preset
47 DKS 00–01 01 D/K Stereo enable/disable
48 MUT 00–01 00 Muting on/off at No Sync
49 ABL 00–01 00 Bright ABL Switch
4A SCM 00–01 00 SECAM Trap active/inactive
4B SLS 00–01 01 Active SL.OR.IFI Sync
4C SSV 00–07 02 Space Sound Volume Step Up
4D VPW 00–7F 28
Timer of Video Processor start up wait
4E OP1 00–FF 2F Optional Flags 0 (see page 20)
4F OP2 00–FF 0F Optional Flags 1 (see page 20)
50 OP3 00–FF 00 Optional Flags 2 (see page 20)
NOTE
•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.