Sony KV-13M40, KV-13M50, KV-13M51, KV-14MB40, KV-14MB40C Service Manual
...
KV-[13M40/50/51], KV-[14MB40/40C/40A], KV-[20M40/S40/S41/V80], KV-[21SE40/40A/40C/80/80A/80C],
KV-[21MB40C/40M/40P], KV -[21ME40/40P], KV-[21SB40/40M/40P], KV-21XT4A
SELF-DIAGNOSTIC FUNCTION
SERVICE MANUAL
MODEL COMMANDER DEST. CHASSIS NO. MODEL COMMANDER DEST. CHASSIS NO.
KV-13M40
KV-13M40
KV-13M50
KV-13M51
KV-14MB40
KV-14MB40C
KV-14MB40A
KV-20M40
KV-20M40
KV-20S40
KV-20S40
KV-20S41
RM-Y156 US SCC-S01E-A
RM-Y156 CND SCC-S03D-A
RM-Y156 US SCC-S01G-A
RM-Y156W US SCC-S01F-A
RM-Y156 E SCC-S04P-A
RM-Y156 E SCC-S04N-A
RM-Y156 E SCC-S04Q-A
RM-Y156 US SCC-S01A-A
RM-Y156 CND SCC-S03C-A
RM-Y155 US SCC-S01C-A
RM-Y155 CND SCC-S03A-A
RM-Y156W US SCC-S01B-A
KV-21SE80A
KV-21MB40C
KV-21MB40M
KV-21MB40P
KV-21ME40
KV-21SB40C
KV-21SB40M
KV-21SB40P
KV-21SE80
KV-21SE80C
KV-21SE40
KV-21SE40C
BA-4
RM-Y135A E SCC-S04M-A
RM-Y156 E SCC-S04F-A
RM-Y156 MX SCC-S02B-A
RM-Y156 E SCC-S04E-A
RM-Y156 E SCC-S04B-A
RM-Y155 E SCC-S04H-A
RM-Y155 MX SCC-S02A-A
RM-Y155 E SCC-S04J-A
RM-Y135A E SCC-S04L-A
RM-Y135A E SCC-S04K-A
RM-Y155 E SCC-S04A-A
RM-Y155 E SCC-S04C-A
CHASSIS
KV-20S41
KV-20V80
KV-20V80
RM-Y156W CND SCC-S03L-A
RM-Y135A US SCC-S01D-A
RM-Y135A CND SCC-S03B-A
KV-21SE40A
KV-21XT4A
KV-21ME40C
RM-Y155 E SCC-S04D-A
RM-Y155 E SCC-S04G-A
RM-Y156 E SCC-S04W-A
— 1 —
TRINITRON® COLOR TV
KV- 13M40* 14MB40C* 20M40 21MB40M 21MB40C 20V80* 21SE80A 21ME40 21SE40C
13M50** 14MB40A** 20S40 21MB40P 21SB40C 21SE80** 21SE80C 21SE40 21SE40A
13M51** 20S41 21SB40P 21XT4A 21ME40C
14MB40* 21SB40M
Power Requirements 120V, 60 Hz 220V, 50/60 Hz 120V, 60Hz 120V, 60Hz 220V, 50/60Hz 120V, 60Hz 220V, 50/60 Hz 120V, 60 Hz 220V, 50/60Hz
Number of Inputs/Outputs
Video
1)
1*/2** 1*/2** 2 2 2 2 2 2 2
S Video
2)
- - - - - 1*/-** - - -
Audio
3)
1*/2** 1*/2** 2 2 2 2*/** 2 2 2
Audio Out
4)
- - - - - 1*/** 1 - -
Speaker Output (W) 3 W 3W 3W (M40) 3W (MB40M/40P) 3W(MB40C) 5W x 2 5W x 2 3W x 2 (ME40) 4W x 2 (SE40A/40C)
3W x 2 (S40/41) 3W x 2 (SB40M/40P) 3W x 2 (SB40C/XT4A) 4W x 2 (SE40) 3W x 2 (ME40C)
Power Consumption (W)
In use (Max.) 75 W 80 W 80W (M40 ) 80W (MB40M/40P) 85W (MB40C) 100W 105W 90W 95W
90W (S40/41 ) 90W (SB40M/40P) 95W (SB40C)/(XT4A)
In standby 8W 10 W 8W 8W 1 0W 8W 10 W 8W 10W
Dimensions (W/H/D) 358 x 342 358 x 342 522 x 477 522 x 477 522 x 477 556 x 464.5 556 x 464.5 610 x 464.5 610 x 464.5
(mm) x 401 mm x 401 mm x 479 mm x 479 mm x 479 mm x 474.9 mm x 474.9 mm x 469..5 mm x 469..5 mm
(in.)
14
1/8
x 13
1/2
14
1/8
x 13
1/2
21 x 18
3/4
21 x 18
3/4
21 x 18
3/4
21
7/8
x 18
1/4
21
7/8
x 18
1/4
24 x 18 24 x 18
x 15
3/4 in.
x 15
3/4 in.
x 18
7/8
x 18
7/8
x 18
7/8
x 18
2/3
in. x 18
2/3
in. x 18
1/2
in. x 18
1/2
in.
Mass
(kg) 10 kg 10 kg 21.6 kg 21.6 kg 21.6 kg 22.6 kg 22.6 kg 20.6 kg 20.6 kg
(lbs) 22 lbs. 22 lbs. 48 lbs. 48 lbs. 48 lbs. 49 lbs. 3 oz. 49 lbs. 3 oz. 45 lbs. 45 lbs.
Television System
1)
1 Vp-p 75 ohms unbalanced, sync negative ( )
SRS (SOUND RETRIEVAL SYSTEM)
American TV Standard (all models except: KV-14MB40A/21SE40A/21XTA4/21SE80A)
2)
Y: 1 Vp-p 75 ohms unbalanced, sync negative The ( ) SRS (SOUND RETRIEVAL SYSTEM) is
PAL-M, PAL-N, NTSC (for KV-14MB40A/21SE40A/21XTA4/21SE80A only) C: 0.286 Vp-p (Burst signal), 75 ohms manufactured by Sony Corporation under license
3)
500 mVrms (100% modulation), Impedance: 47 kilohms from SRS Labs, Inc. It is covered by U.S. Patent No.
Channel Coverage
4)
More than 408 mVrms at the maximum volume setting (variable) 4,748,669. Other U.S. and foreign patents pending.
VHF: 2-13 / UHF: 14-69 / CATV: 1-125 More than 408 mVrms (fix) The word 'SRS' and the SRS symbol ( ) are
Picture Tube Impedance: 50 kilohms registered trademarks of SRS Labs, Inc.
Trinitron Tube
Design and specifications are subject to change
Licensed by BBE Sound, Inc. under
Visible Screen Size
without notice.
USP 4638258.4482866. BBE and BBE symbol are
13-inch picture measured diagonally trademarks of BBE Sound, Inc.
20-inch picture measured diagonally
Actual Screen Size (For KV-21SE80/21SE80A/21SE80C/20V80 only)
14-inch picture measured diagonally
21-inch picture measured diagonally
Antenna
75 ohm external terminal for VHF/UHF
Supplied Accessories
Remote commander (w/2 size AA (R6) batteries)
RM-Y156: (KV-13M40/13M50/14MB40/20M40/21MB40M/
21MB40P/21MB40C/14MB40C/14MB40A/21ME40/21ME40C only)
RM-156W: (KV-13M51/20S41 only)
RM-Y155: (KV-20S40/21SB40M/21SB40P)
21SB40C/21XT4A/21SE40/21SE40C/21SE40A only)
RM-Y135A: (KV-20V80/21SE80/21SE80A/21SE80C only)
Antenna Dipole (7 models)
(KV-21SE80A/21SE40A/21XT4A/13M40/13M50/13M51/14MB40A only)
Antenna Connector
(all models except: KV-20M40/20S40/20S41/21SE80/21SE80C/20V80)
Optional Accessory
Antenna dipole (KV-20M40/20S40/20S41 only)
SPECIFICATIONS
KV-[13M40/50/51], KV-[14MB40/40C/40A], KV-[20M40/S40/S41/V80], KV-[21SE40/40A/40C/80/80A/80C],
KV-[21MB40C/40M/40P], KV -[21ME40/40P], KV-[21SB40/40M/40P], KV-21XT4A
— 2 —
KV-[13M40/50/51], KV-[14MB40/40C/40A], KV-[20M40/S40/S41/V80], KV-[21SE40/40A/40C/80/80A/80C],
TABLE OF CONTENTS
Section Title PageSection Title Page
KV-[21MB40C/40M/40P], KV -[21ME40/40P], KV-[21SB40/40M/40P], KV-21XT4A
Warnings and Caution ..................................................... 4
Self-Diagnostic Function ................................................ 4
Safety Check Out Instructions ........................................ 7
1. GENERAL
1-1. Instruction Manual - English Edition
Connecting the TV.......................................................8
Using the Remote Control ..........................................8
Setting Menu Language...............................................9
Setting up your Channels............................................9
Watching the TV...........................................................9
Additional Features.....................................................10
Troubleshooting...........................................................11
1-2. Instruction Manual - Spanish Edition
Instalacion................................................................... 12
Uso del Control Remoto............................................. 12
Adjuste de Idioma de los Menus.................................13
Programacion de Canales............................................13
Otras Funciones...........................................................14
Solucion de Problemas................................................15
3. SET-UP ADJUSTMENTS
3-1. Beam Landing.............................................................20
3-2. Convergence............................................................... 21
3-3. Focus........................................................................... 22
3-4. Screen (G2)................................................................. 22
3-5. Method of Setting the Service Adjustment Mode.......22
3-6. White Balance Adjustments........................................22
4. SAFETY RELATED ADJUSTMENTS......................... 23
5. CIRCUIT ADJUSTMENTS
5-1. Electrical Adjustment by Remote Commander...........25
5-2. A Board Adjustments.................................................. 27
6. DIAGRAMS
6-1. Block Diagrams.......................................................... 29
6-2. Circuit Boards Location..............................................32
6-3. Printed Wiring Boards and Schematic Diagrams .......32
• A Board..................................................................... 33
• HZ Board ................................................................. 36
• C Board..................................................................... 40
2. DISASSEMBLY
2-1-1. Rear Cover Removal .....................................................16
(KV -13M40/13M50/13M51/14MB40/14MB40A/14MB40C)
2-1-2. Rear Cover Removal...................................................... 16
(KV -20M40/20S40/20S41/21MB40C/21MB40M/
21MB40P/21SB40C/21SB40M/21SB40P/21XT4A)
2-1-3. Rear Cover Removal..........................................................16
(KV -21ME40/21ME40C/21SE40/21SE40A/21SE40C)
2-1-4. Rear Cover Removal .....................................................17
(KV-20V80/21SE80/21SE80A/21SE80C)
2-2. A Board Removal (for all models) .............................17
2-3. Service Position (for all models)................................17
2-4-1. Picture Tube Removal ................................................... 18
(KV-13M40/13M50/13M51/14MB40/14MB40A/14MB40C)
2-4-2. Picture Tube Removal................................................... 18
(KV-20M40/20S40/20S41/21MB40C/21MB40M/21MB40P/
21SB40C/21SB40P/21XT4A/21ME40/21ME40C/21SE40/
21SE40A/21SE40C/21SB40M)
2-4-3. Picture Tube Removal.................................................. 19
(KV-20V80/21SE80/21SE80A/21SE80C)
6-4. Semiconductors...........................................................47
7. EXPLODED VlEWS
7-1. Chassis ..........................................................................48
(KV-13M40/13M50/13M51/14MB40/14MB40A/14MB40C)
7-2 . Chassis..........................................................................49
(KV-20M40/20S40/20S41/21MB40C/21MB40M/21MB40P/
21SB40C/21SB40M/21SB40P/21XT4A)
7-3 . Chassis..........................................................................50
(KV-21ME40/21ME40C/21SE40/21SE40A/21SE40C)
7-4 . Chassis (KV -20V80/21SE80/21SE80A/21SE80C)................ 51
7-5. Main Power Switch...................................................... 52
8. ELECTRICAL PARTS LIST
• Table of Contents for Parts List...................................53
• A Board Common Parts List....................................... 54
• A Board Variant Lists.................................................. 60
• C Board Parts List....................................................... 100
• HZ Board Parts List.....................................................101
— 3 —
KV-[13M40/50/51], KV-[14MB40/40C/40A], KV-[20M40/S40/S41/V80], KV-[21SE40/40A/40C/80/80A/80C],
g
g
)
y
(
)
)
(
(
)
y (
)
y
(
(
)
)
y
)
KV-[21MB40C/40M/40P], KV -[21ME40/40P], KV-[21SB40/40M/40P], KV-21XT4A
WARNINGS AND CAUTIONS
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.
WARNING!!
AN ISOLATION TRANSFORMER SHOULD BE USED
DURING ANY SERVICE TO AVOID POSSIBLE SHOCK
HAZARD, BECAUSE OF LIVE CHASSIS.THE CHASSIS OF
THIS RECEIVER IS DIRECTLY CONNECTED TO THE AC
POWER LINE.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK
¡ ON THE SCHEMA TIC DIAGRAMS, EXPLODED VIEWS
AND IN THE PARTS LIST ARE CRITICAL FOR SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY. CIRCUIT ADJUSTMENTS THAT
ARE CRITICAL FOR SAFE OPERA TION ARE IDENTIFIED
IN THIS MANUAL. FOLLOW THESE PROCEDURES
WHENEVER CRITICAL COMPONENTS ARE REPLACED
OR IMPROPER OPERATION IS SUSPECTED.
SELF-DIAGNOSTIC FUNCTION
ATTENTION
APRES AVOIR DECONNECTE LE CAP DE L'ANODE, COURT-CIRCUITER
L'ANODE DU TUBE CATHODIQUE ET CELUI DE L'ANODE DU CAP AU
CHASSIS METALLIQUE DE L'APPAREIL, OU AU COUCHE DE CARBONE
PEINTE SUR LE TUBE CATHODIQUE OU AU BLINDAGE DU TUBE
CATHODIQUE.
ATTENTION!!
AFIN D'EVITER TOUT RESQUE D'ELECTROCUTION PROVENANT D'UN
CHÁSSIS SOUS TENSION, UN TRANSFORMATEUR D'ISOLEMENT DOIT
ETRE UTILISÉ LORS DE TOUT DÉPANNAGE. LE CHÁSSIS DE CE
RÉCEPTEUR EST DIRECTEMENT RACCORDÉ À L'ALIMENTATION
SECTEUR.
ATTENTION AUX COMPOSANTS RELATIFS A LA SECURITE!!
LES COMPOSANTS IDENTIFIES PAR UNE TRAME ET PAR UNE MARQUE
¡ SUR LES SCHEMAS DE PRINCIPE, LES VUES EXPLOSEES ET LES
LISTES DE PIECES SONT D'UNEIMPORTANCE CRITIQUE POUR LA
SECURITE DU FONCTIONNEMENT . NE LES REMPLACER QUE PAR DES
COMPOSANTS SONY DONT LE NUMERO DE PIECE EST INDIQUE DANS
LE PRESENT MANUEL OU DANS DES SUPPLEMENTS PUBLIES PAR
SONY . LES REGLAGES DE CIRCUIT DONT L'IMPORT ANCE EST CRITIQUE
POUR LA SECURITE DU FONCTIONNEMENT SONT IDENTIFIES DANS
LE PRESENT MANUEL. SUIVRE CES PROCEDURES LORS DE CHAQUE
REMPLACEMENT DE COMPOSANTS CRITIQUES, OU LORSQU'UN
MAUVAIS FONTIONNEMENT SUSPECTE.
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.
DIAGNOSTIC TEST INDICATORS
When an error occurs, the ST ANDBY/TIMER lamp will flash a set number of times to indicate the possible cause of the problem. I f there
is more than one error, the lamp will identify the first of the problem areas.
Results for all of the following diagnostic items are displayed on screen. No error has occured if the the screen displays a "0" .
Diagnostic Item No. of times Self-diagnostic display/ Probable Cause Detected Symptoms
Description STANDBY/TIMER Dia
* Power does not turn on Does not li
* +B overcurrent
* Vertical deflection stopped 4 times 4:0 or 4:1 * +13V is not supplied. (A board) * Has entered standby state after horizontal raster.
* White balance failure 5 times 5:0 or 5:1 * Video OUT
not balanced
OCP
lamp flashes
ht * Power cord is not plugged in. * Power does not come on.
2 times 2:0 or 2:1 * H.OUT (Q502) is shorted. (A board
nostic result Location
* Fuse is burned out (F601
* IC751
for 13"), IC701 and * Load on power line is shorted.
Q701
for 20"/21") is shorted. (C board
* IC 541 is fault
* IC301 is faulty. (A board
* G2 is improperl
A board
Q394 to 392) is faulty. (A board)* No raster is generated.
adjusted. (Note 2
* No power is suppled to the TV.
* AC power suppl
* Power does not come on.
* Vertical deflection pulse is stopped.
* Power line is shorted or power suppl
* CRT cathode current detection reference pulse
output is small.
is faulty.
is stopped.
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.
— 4 —
DISPLAY OF STANDBY/TIMER LIGHT FLASH COUNT
2 times
4 times
5 times
KV-[13M40/50/51], KV-[14MB40/40C/40A], KV-[20M40/S40/S41/V80], KV-[21SE40/40A/40C/80/80A/80C],
KV-[21MB40C/40M/40P], KV -[21ME40/40P], KV-[21SB40/40M/40P], KV-21XT4A
Lamp ON 0.3 sec.
Lamp OFF 0.3 sec.
Lamp OFF
STANDBY/SLEEP lamp
3 sec.
Diagnostic Item Flash Count*
+B overcurrent 2 times
Vertical deflection stopped 4 times
White balance failure 5 times
* One flash count is not used for self-diagnostic.
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.
SELF-DIAGNOSTIC SCREEN DISPLAY
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:
Screen display
channel
5
Sound volume
–
Power ON
Note that this differs from entering the service mode (sound volume + ).
Self-Diagnostic screen display
SELF DIAGNOSTIC
2: 0 <-------------
Numeral "0" means that no fault has been detected.
3: N/A 0
4: 0
5: 1 <-------------
Numeral "1" means a fault has been detected one time only.
101: N/A 0
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.
ENTER
Channel
[Quitting Self-diagnostic screen]
To quit the entire self-diagnostic screen, turn off the power switch on the remote commander or the main unit.
8
— 5 —
KV-[13M40/50/51], KV-[14MB40/40C/40A], KV-[20M40/S40/S41/V80], KV-[21SE40/40A/40C/80/80A/80C],
KV-[21MB40C/40M/40P], KV -[21ME40/40P], KV-[21SB40/40M/40P], KV-21XT4A
6. SELF-DIAGNOSTIC CIRCUIT
IC001
SYSTEM
17 I-PROT
37 SDAT
36 5
18
O-LED
MEMORY
B-DATIO-BDAT
FROM
CRT
FROM
IC521
PIN 7
IC301
Y/CHROMA JUNGLE
21
IK IN
18
HP/PROTECT
SDA
IC541
V.OUT
3
REF
35
+B overcurrent (OCP) Occurs when an overcurrent on the +B(115V) line is detected by pin 18 of IC301. If the
voltage to pin 18 of IC301 is less than 1V 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 of IC001.
Power supply will shut down when waveform interval exceeds 2 seconds.
White balance failure If the RGB levels* do not balance within 2 seconds after the power is turned on, this error
will be detected by IC301. TV will stay on, but there will be no picture.
IC003
*(Refers to the RGB levels of the AKB detection Ref pulse that detects IK.)
— 6 —
KV-[13M40/50/51], KV-[14MB40/40C/40A], KV-[20M40/S40/S41/V80], KV-[21SE40/40A/40C/80/80A/80C],
SAFETY CHECK-OUT
KV-[21MB40C/40M/40P], KV -[21ME40/40P], KV-[21SB40/40M/40P], KV-21XT4A
After correcting the original service problem, perform the
following safety checks before releasing the set to the
customer:
1. Check the area of your repair for unsoldered or poorlysoldered connections. Check the entire board surface
for solder splashes and bridges.
2. Check the interboard wiring to ensure that no wires
are “pinched” or contact high-wattage resistors.
3. Check that all control knobs, shields, covers, ground
straps, and mounting hardware have been replaced.
Be absolutely certain that you have replaced all the
insulators.
4. Look for unauthorized replacement parts, particularly
transistors, that were installed during a previous
repair. Point them out to the customer and
recommend their replacement.
5. Look for parts which, though functioning, show
obvious signs of deterioration. Point them out to
the customer and recommend their replacement.
6. Check the line cords for cracks and abrasion.
Recommend the replacement of any such line cord
to the customer.
7. Check the B+ and HV to see if they are specified
values. Make sure your instruments are accurate;
be suspicious of your HV meter if sets always have
low HV.
8. Check the antenna terminals, metal trim, “metallized"
knobs, screws, and all other exposed metal parts for
AC Leakage. Check leakage as described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground
and from all exposed metal parts to any exposed metal part having
a return to chassis, must not exceed 0.5 mA (500 microampere).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or
RCA WT-540A. Follow the manufacturers' instructions to
use these instructions.
2. A battery-operated AC milliammeter. The Data Precision
245 digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of
a VOM or battery-operated AC voltmeter. The "limit"
indication is 0.75 V, so analog meters must have an accurate
low voltage scale. The Simpson's 250 and Sanwa
SH-63Trd are examples of passive VOMs that are suitable.
Nearly all battery operated digital multimeters that have a
2V AC range are suitable. (See Fig. A)
HOW TO FIND A GOOD EARTH GROUND
A cold-water pipe is guaranteed earth ground; the cover-plate
retaining screw on most AC outlet boxes is also at earth ground.
If the retaining screw is to be used as your earth-ground, verify
that it is at ground by measuring the resistance between it and a
cold-water pipe with an ohmmeter. The reading should be zero
ohms. If a cold-water pipe is not accessible, connect a 60-l00 watts
trouble light (not a neon lamp) between the hot side of the receptacle and the retaining screw. Try both slots, if necessary, to
locate the hot side of the line, the lamp should light at normal
brilliance if the screw is at ground potential. (See Fig. B)
To Exposed Metal
Parts on Set
AC
1.5 k
0.15 µF
Fig. A. Using an AC voltmeter to check AC leakage.
W
Earth Ground
Voltmeter
(0.75 V)
— 7 —
KV-[13M40/50/51], KV-[14MB40/40C/40A], KV-[20M40/S40/S41/V80], KV-[21SE40/40A/40C/80/80A/80C],
KV-[21MB40C/40M/40P], KV -[21ME40/40P], KV-[21SB40/40M/40P], KV-21XT4A
SECTION 3
SET-UP ADJUSTMENTS
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.
The controls and switch should be set as follows
unless otherwise noted:
PICTURE control ................. normal
BRIGHTNESS control ......... normal
3-1. BEAM LANDING
Preparation:
• Feed in the white pattern signal.
• Before starting, degauss the entire screen.
1. Input a raster signal with the pattern generator.
2. Loosen the deflection yoke mounting screw, and set the
purity control to the center as shown in Fig.2.
Perform the adjustments in order as follows:
1. Beam Landing
2. Convergence
3. Focus
4. Screen (G2) and White Balance
Note: Test Equipment Required
1. Color Bar Pattern Generator
2. Degausser
3. DC Power Supply
4. Digital Multimeter
Fig. 2
3. Turn the raster signal of the pattern generator to
green.
4. Move the deflection yoke backward, and adjust with the
purity control so that green is in the center and red and
blue are at the sides evenly. (Fig.3)
5. Move the deflection yoke forward, and adjust so that the
entire screen becomes green. (Fig.1)
6. Switch over the raster signal to red and blue and confirm
the condition.
7. When the position of the deflection yoke is determined,
tighten it with the deflection yoke mounting screw.
8. When landing at the corner is not right, adjust by using
the disk magnets. (Fig.4)
Fig. 3
Disk magnets or
rotatable disk
magnets correct
these areas (a-d).
Fig. 1
Fig. 4
— 20 —
KV-[13M40/50/51], KV-[14MB40/40C/40A], KV-[20M40/S40/S41/V80], KV-[21SE40/40A/40C/80/80A/80C],
KV-[21MB40C/40M/40P], KV-[21ME40/40P], KV-[21SB40/40M/40P], KV-21XT4A
3-2. CONVERGENCE
Preparation:
• Before starting, perform FOCUS, V. LIN and V. SIZE
adjustments.
• Set BRIGHTNESS control to minimum.
• Feed in dot pattern.
(1) Vertical Static Convergence
V. STAT magnet
If the blue dot does not converge with red and green dots,
perform the 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.
BMC magnet
Fig. 6
Fig. 5
1. Adjust V. STAT magnet to converge red, green and blue
dots in the center of the screen. (Vertical movement)
Tilt the V. STAT magnet and adjust static convergence
to open or close the V. STAT magnet.
2. When the V . STAT magnet is moved in the direction of
arrow a and b, red, green, and blue dots move as
shown below:
Fig. 7
( 2 ) Dynamic Convergence Adjustment
Preparation:
• Before starting, perform Horizontal and Vertical
Static Convergence Adjustment.
1. Slightly loosen deflection yoke screw.
2. Remove deflection yoke spacers.
3. Move the deflection yoke for best convergence as shown
below. ( Fig. 8)
4. Tighten the deflection yoke screw.
5. Install the deflection yoke spacers.
— 21 —
Fig. 8
KV-[13M40/50/51], KV-[14MB40/40C/40A], KV-[20M40/S40/S41/V80], KV-[21SE40/40A/40C/80/80A/80C],
KV-[21MB40C/40M/40P], KV -[21ME40/40P], KV-[21SB40/40M/40P], KV-21XT4A
(3) Screen-corner Convergence
Fig. 9
Affix a permalloy assembly corresponding to the misconverged
areas:
3-3. FOCUS
1. Adjust FOCUS control (RV752 on C-board) for best
picture for 13" and 14".
Fig. 10-A
4. Observe the screen and adjust:
SCREEN (G2) VR (for 20" and 21")
SCREEN (G2) RV751 (for 13" and 14")
to obtain the faintly visible background of dot signal.
3-5. METHOD OF SETTING THE SERVICE
ADJUSTMENT MODE
(1) SERVICE MODE PROCEDURE
1. Standby mode. (Power off)
2. on the
Remote Commander. (Press each button within a second.)
(2) SERVICE ADJUSTMENT MODE IN
Disp.
Item
(Item)
data
SERVICE AFC 0
3. The CRT displays the item being adjusted.
4. Press 1 or 4 on the Remote Commander to
select the item.
5. Press 3 or 6 on the Remote Commander to
change the data.
SCREEN
(RV751)
FOCUS
(RV752)
2. Adjust FOCUS control for best picture for 20" and 21".
Fig. 10-B
3-4. SCREEN (G2)
1. Input a dots pattern.
2. Set the PICTURE and BRIGHT controls at minimum
and COLOR control at normal.
3. Adjust SBRT, GCUT, BCUT in service mode with an
oscilloscope as shown in Fig. 11 so that voltages on the red,
green, and blue cathodes are: 170Vdc (for 20" and 21") and
150Vdc (for 13" and 14").
Fig. 11
N
NN
NN
170Vdc
150 V dc/170 V dc
GND
NN
NN
N
N
NN
NN
pedestal
6. Press
then to write into memory.
(3) SERVICE ADJUSTMENT MODE MEMORY
Green
Red
7. Turn set off and on to exit.
3-6. WHITE BALANCE ADJUSTMENTS
1. Input an entire white signal.
2. Set to Service adjustment Mode.
3. Set DCOL to "0"
4. Set the PICTURE and BRIGHT to minimum.
5. Adjust with SBRT if necessary.
6. Select GCUT and BCUT with 1 and 4 .
7. Adjust with 3 and 6 for the best white balance.
8. Set the PICTURE and BRIGHT to maximum.
9. Select GDRV and BDRV with 1 and 4 .
10. Adjust with 3 and 6 for the best white balance.
11. Reset DCOL to "1".
12. W rite into the memory by pressing
— 22 —
then .
A BOARD
KV-[13M40/50/51], KV-[14MB40/40C/40A], KV-[20M40/S40/S41/V80], KV-[21SE40/40A/40C/80/80A/80C],
KV-[21MB40C/40M/40P], KV-[21ME40/40P], KV-[21SB40/40M/40P], KV-21XT4A
SECTION 4
SAFETY RELATED ADJUSTMENTS
R582 CONFIRMATION METHOD (HV HOLD-
DOWN CONFIRMATION) AND READJUSTMENTS
The following adjustments should always be performed when
replacing the following components which are marked with ] on
the schematic diagram:
IC301, IC521, IC602, D572, D573, D574, DY,
C507, C511, C574, C575, R578, R582, R583, R584,
R585, R586,R625, R626, R634, R635, T504 (FBT)
(1) Preparation before Confirmation
1) Turn the POWER switch ON. Input an entirely white
signal and set the PICTURE and BRIGHT controls to
maximum.
2) Confirm that the voltage between C574(+) and ground is
more than: 99.8VDC (for 20"/21")
95.0VDC (for 13"/14")
when the set is operating normally with 120.0 ± 2.0 VAC,
(or 220.0 ± 2.0 VAC supply for KV-14MB40C/40A,
21ME40C, 21MB40C, 21SE40C/40A/80C/80A, 21SB40C
and 21XT4A only).
(2) Hold-down Operation Confirmation
1) Connect the current meter between Pin 11 of the FBT
(T504) and the PCB land where Pin 11 would normally attach.
2) Input a dot signal and set PICTURE and BRIGHTNESS to
minimum:
IABL = 95+100/-95µA (for 20"/21")
40+100/-40µA (for 13"/14")
3) Confirm the voltage of A board TP-600 is
116.8 ± 0.3VDC (for 20"/21")
117.0 ± 0.3VDC (for 13"/14")
4) Connect the Digital Voltmeter and the DC power supply
via diode 1SS119 to C574 (+). (See figure 1.0 on next page.)
5) Increase the DC power voltage gradually until the picture blanks out.
6) Read the digital voltmeter indication.
7) Turn DC power source off immediately.
STANDARD
Less than or equal to: 127.3 VDC (for 20"/21")
117.75 VDC (for 13"/14")
8) Input a white signal and set PICTURE and BRIGHTNESS to Max
9) Repeat steps from (4) to (7).
STANDARD
Less than or equal to: 127.3 VDC (for 20"/21")
117.75 VDC (for 13"/14")
(3) Hold-down Readjustment
If the current setting indicated in step 2-2 cannot be met,
readjustment should be performed by altering the resistance
value of R582, a component marked with
T504
FBT
ammeter
3.0 mA DC
range
ABL
+
I ABL
-
A
.
B+ VOLTAGE CONFIRMATION AND ADJUSTMENT
The following adjustments should always be performed
when replacing the following components which are marked
with ] on the schematic diagram:.
IC001, IC602, R030, R624, R626, R632,
R633, R635, R636, R637, R638, R639
1) Supply 130 ±
2.0
VAC (or 220.0 ± 2.0 VAC supply for KV-
0
14MB40C/40A, 21ME40C, 21MB40C, 21SE40C/40A/80C/
80A, 21SB40C and 21XT4A only) to the set with a variable
auto transformer.
2) Input a dot signal.
3) Set the PICTURE control and the BRIGHT control to
minimum condition.
4) Set to service adjustment mode.
5) Select PADJ with
6) Adjust with
and .
to the 0 level.
7) Confirm the voltage of A BOARD TP-600 is less than
125V DC.
8) If step 7 is not satisfied, replace the components, repeat the
above steps.
9) Supply 120.0 ± 2.0 VAC (or 220.0 ± 2.0 VAC supply for
KV-14MB40C/40A, 21ME40C, 21MB40C, 21SE40C/40A/
80C/80A, 21SB40C and 21XT4A only) to the set with a
variable auto transformer.
10) Adjust with
and for: 116.8 ± 0.3V DC (for 20"/21")
117.0 ± 0.3V DC (for 13"/14")
11) Write into the memory by pressing
then .
— 23 —
MULTIMETER
TP600
DIGITAL
[A BOARD]
[
R582
C574
ABL 11
AMMETER
3mA dc range
T504
FBT
POWER
SUPPLY
DIGITAL
MULTIMETER
1SS119
—
24 —
Figure 1.0
— 24 —
KV-[13M40/50/51], KV-[14MB40/40C/40A], KV-[20M40/S40/S41/V80], KV-[21SE40/40A/40C/80/80A/80C],
KV-[21MB40C/40M/40P], KV-[21ME40/40P], KV-[21SB40/40M/40P], KV-21XT4A
SECTION 5
CIRCUIT ADJUSTMENTS
5-1. ELECTRICAL ADJUSTMENT BY REMOTE COMMANDER
Use Remote Commander (RM-Y155) to perform circuit
adjustments on this model.
NOTE : Test Equipment Required.
1. Pattern Generator
2. Frequency Counter
3. Digital Multimeter
4. Audio OSC
(1) Method of Setting the Service
Adjustment Mode
SERVICE MODE PROCEDURE
1. Standby mode. (Power off)
2. on the
Remote Commander. (Press each button within a
second.)
SERVICE ADJUSTMENT MODE IN
Disp.
(Item)
SERVICE SYS 0
Item
data
3. The CRT displays the item being adjusted.
4. Press or on the Remote Commander to select the
item.
5. Press
or on the Remote Commander to change the
data.
6. Press then to write into memory.
SERVICE ADJUSTMENT MODE MEMORY
SERVICE WRITE
Green
7. Press then on the Remote Commander to
initialize.
SERVICE RESET
Carry out step 7 when adjusting
IDs 0 to 4 and when replacing
and adjusting IC003.
8. Turn set off and on to exit.
(2) Memory Write Confirmation Method
1. After adjustment, pull out the plug from the AC outlet,
then replace the plug in the AC outlet again.
2. Turn the power switch ON and set to service mode.
3. Call the adjusted items again to confirm they were adjusted.
(3) Adjust Buttons and Indicator
MUTING
Write the memory
DISPLAY
Service mode
Item up
Item down
1
4
MUTING
SLEEP
DISPLAYMTS
1
4
7 8 9
JUMP
POWER
TV/VIDEO
2
5
3
6
ENTER
POWER
Service mode
3
Data up
6
Data down
5
Service mode
8
Initialize
0
MENU
ENTER
Write into memory
VOL(+)
Service mode
RESET
VOL CH
+
SELECT
+
Red
— 25 —
-
RM-Y155
-
KV-[13M40/50/51], KV-[14MB40/40C/40A], KV-[20M40/S40/S41/V80], KV-[21SE40/40A/40C/80/80A/80C],
KV-[21MB40C/40M/40P], KV -[21ME40/40P], KV-[21SB40/40M/40P], KV-21XT4A
(4) Item of Adjustments
DATA INITIAL DATA AVERAGE
NO. ITEM FUNCTION RANGE NTSC PAL-M PAL-N VIDEO DATA
1 HSIZ HORIZONTAL AMP. ADJ. 0-63 31 31 31 31
2 HPOS HORIZONTAL POS. ADJ. 0-63 21 21 19 28
3 VBOW VRT LINE BOWING ADJ. 0-15 6 8
4 VANG VRT LINE BOW SLANT ADJ. 0-15 6 10
5 TRAP HORIZ. TRAPEZOID ADJ. 0-15 15 15
6 PAMP HORIZ. PIN DISTORTION ADJ. 0-63 31 31 31 31
7 CPIN SAME AS PAMP-SCRN TP/BTM 0-63 31 31 31 31
8 VSIZ VERTICAL AMP. ADJUST 0-63 43 43 47 44
9 VPOS VERTICAL POSITION ADJ. 0-63 35 35 28 33
1 0 VLIN VERTICAL LINEARITY ADJ. 0-15 7 7 7 5
1 1 SCOR VERTICAL AMOUNT ADJ. 0-15 7 7 7 9
1 2 VZOM 16:9 CRT Z MODE ON/OFF 0 ,1 0 0
1 3 E H T VRT HI-VOLT. CORRECTION 0-15 15 15
1 4 ASP ASPECT RATIO CONTROL 0-63 47 47
1 5 SCRL 16:9 CRT Z MODE TRAN SCRL 0-63 31 31
1 6 HBLK RGB OUT WIDTH CONTROL 0 , 1 1 1
1 7 LBLK LEFT SCREEN HBLK CONTROL 0-15 15 15
1 8 RBLK RGT SCREEN HBLK CONTROL 0-15 3 3
1 9 VUSN V SAW WAVEFORM COMPRES 0 , 1 0 0
2 0 HDW H. DRIVE PULSE WIDTH 0,1 0 0
2 1 EWDC EW/DC ADJUST 0 ,1 0 0
2 2 LVLN SCREEN BTM VRT LIN ADJUST 0-15 0 0
2 3 UVLN SCREEN TOP VRT LIN ADJUST 0-15 0 0
2 4 RDRV R OUTPUT DRIVE CONTROL 0-63 30 32
2 5 GDRV G OUTPUT DRIVE CONTROL 0-63 24 28
2 6 BDRV B OUTPUT DRIVE CONTROL 0-63 21 25
2 7 RCUT R OUTPUT CUTOFF CONTROL 0-15 15 7
2 8 GCUT G OUTPUT CUTOFF CONTROL 0-15 7 5
2 9 BCUT B OUTPUT CUTOFF CONTROL 0-15 7 6
3 0 DCOL DYNAMIC COLOR ON/OFF 0 , 1 0 1
3 1 SHUE SUB HUE 0-31 15 15
3 2 SCOL SUB COLOR 0-31 14 14 14 15
3 3 SBRT SUB BRIGHTNESS 0-31 7 5
3 4 RON R OUTPUT ON/OFF 0 , 1 1 1
3 5 GO N G OUTPUT ON/OFF 0 , 1 1 1
3 6 BO N B OUTPUT ON/OFF 0 , 1 1 1
3 7 AXPL AXIS PAL 0 ,1 0 0
3 8 AXNT AXIS NTSC 0,1 0 0
3 9 CBPF CHROMA BPF ON/OFF 0 ,1 1 1
4 0 CTRP Y TRAP FILTER ON/OFF 0 ,1
4 1 COFF COLOR ON/OFF 0, 1 0 0
4 2 KOFF SET COLOR KILLER 0 , 1 0 0
4 3 SSHP SUB SHARPNESS 0-15 10 10
4 4 SHPF SHARPNESS CIRCUIT F0 0,1 1 1 1
4 5 PREL PRE/OVR SHOOT SWITCHING 0 , 1 0 0
4 6 Y-DC DC TRANS RATIO SWITCHING 0 ,1 1 1
4 7 GAMM GAMMA CORRECTION AMNT 0 - 3 0 0
4 8 ABLM ABL MODE SWITCHING 0 , 1 1 1
4 9 V T H ABL C D VTH SWITCHING 0 , 1 1 1
5 0 YDEL Y DELAY TIME CONTROL 0-15 7 7
5 1 NCOL NO COLOR ID 0 , 1 1 1
5 2 F S C FSC OUT ON/OFF 0 , 1
'1' for V series, '0' for S,M & trinorma 0
53 K-ID KILLER ID CONTROL SW 0 ,1 0 0
5 4 HOSC H VCO OSCILLATION FREQ 0-15 10 10
5 5 V SS V SYNC SLICE LEVEL 0,1 0 0
5 6 H S S H SYNC SLICE LEVEL 0 , 1 0 0
5 7 HMSK 0,1 1 1
5 8 VTMS SELECT SIGNAL VTIM PIN 0 - 3 0 0
5 9 CDMD V CNT DWN MODE SWITCHING 0 - 3 0 1 1
6 0 A F C AFC LOOP GAIN SWITCHING 0 - 3 0 0 0
6 1 FIFR FIELD FREQUENCY 0 - 3
'3' for NTSC models, '1' for trinorma 3
6 2 SBAL SUB BALANCE 0-15 13 13
6 3 DISP OSD POSITION 0-127 15 15
6 4 PADJ POWER ADJUSTMENT 0-63 51 47
0,1:combfilter models 0
Note: No. 1 through 64 show adjustment order.
SERVICE ID0 25
— 26 —
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