background image
-- 1 --
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
TRINITRON® COLOR TV
KV-13M40
RM-Y156
US
SCC-S01E-A
KV-13M40
RM-Y156
CND
SCC-S03D-A
KV-13M50
RM-Y156
US
SCC-S01G-A
KV-13M51
RM-Y156W US
SCC-S01F-A
KV-14MB40
RM-Y156
E
SCC-S04P-A
KV-14MB40C RM-Y156
E
SCC-S04N-A
KV-14MB40A RM-Y156
E
SCC-S04Q-A
KV-20M40
RM-Y156
US
SCC-S01A-A
KV-20M40
RM-Y156
CND
SCC-S03C-A
KV-20S40
RM-Y155
US
SCC-S01C-A
KV-20S40
RM-Y155
CND
SCC-S03A-A
KV-20S41
RM-Y156W US
SCC-S01B-A
KV-20S41
RM-Y156W CND
SCC-S03L-A
KV-20V80
RM-Y135A
US
SCC-S01D-A
KV-20V80
RM-Y135A
CND
SCC-S03B-A
MODEL
COMMANDER
DEST.
CHASSIS NO.
MODEL
COMMANDER
DEST.
CHASSIS NO.
KV-21SE80A RM-Y135A E
SCC-S04M-A
KV-21MB40C RM-Y156
E
SCC-S04F-A
KV-21MB40M RM-Y156
MX
SCC-S02B-A
KV-21MB40P RM-Y156
E
SCC-S04E-A
KV-21ME40
RM-Y156
E
SCC-S04B-A
KV-21SB40C RM-Y155
E
SCC-S04H-A
KV-21SB40M RM-Y155
MX
SCC-S02A-A
KV-21SB40P RM-Y155
E
SCC-S04J-A
KV-21SE80
RM-Y135A
E
SCC-S04L-A
KV-21SE80C RM-Y135A E
SCC-S04K-A
KV-21SE40
RM-Y155
E
SCC-S04A-A
KV-21SE40C RM-Y155
E
SCC-S04C-A
KV-21SE40A RM-Y155
E
SCC-S04D-A
KV-21XT4A
RM-Y155
E
SCC-S04G-A
KV-21ME40C RM-Y156
E
SCC-S04W-A
SERVICE MANUAL
CHASSIS
BA-4
SELF-DIAGNOSTIC FUNCTION


background image
--
2
--
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
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)
3W
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.)
75W
80W
80W (M40 )
80W (MB40M/40P)
85W (MB40C)
100W
105W
90W
95W
90W (S40/41 )
90W (SB40M/40P)
95W (SB40C)/(XT4A)
In standby
8W
10W
8W
8W
10W
8W
10W
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 131/2
14
1/8 x 131/2
21 x 18
3/4
21 x 18
3/4
21 x 18
3/4
21
7/8 x 181/4
21
7/8 x 181/4
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


background image
-- 3 --
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
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
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)
TABLE OF CONTENTS
Section
Title
Page
Section
Title
Page
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
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


background image
-- 4 --
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
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 SCHEMATIC 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 OPERATION ARE IDENTIFIED
IN THIS MANUAL. FOLLOW THESE PROCEDURES
WHENEVER CRITICAL COMPONENTS ARE REPLACED
OR IMPROPER OPERATION IS SUSPECTED.
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'IMPORTANCE 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.
WARNINGS AND CAUTIONS
SELF-DIAGNOSTIC FUNCTION
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 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.
Results for all of the following diagnostic items are displayed on screen. No error has occured if the the screen displays a "0" .
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
.
Diagnostic Item
No. of times
Self-diagnostic display/
Probable Cause
Detected Symptoms
Description
STANDBY/TIMER
Diagnostic result
Location
lamp flashes
* Power does not turn on
Does not light
* Power cord is not plugged in.
* Power does not come on.
* Fuse is burned out (F601)
* No power is suppled to the TV.
* AC power supply is faulty.
* +B overcurrent (OCP)
2 times
2:0 or 2:1
* H.OUT (Q502) is shorted. (A board)
* Power does not come on.
* IC751 (for 13"), IC701 and
* Load on power line is shorted.
Q701 ( for 20"/21") is shorted. (C board)
* Vertical deflection stopped
4 times
4:0 or 4:1
* +13V is not supplied. (A board)
* Has entered standby state after horizontal raster.
* IC 541 is faulty (A board)
* Vertical deflection pulse is stopped.
* Power line is shorted or power supply is stopped.
* White balance failure
5 times
5:0 or 5:1
* Video OUT (Q394 to 392) is faulty. (A board) * No raster is generated.
(not balanced)
* IC301 is faulty. (A board)
* CRT cathode current detection reference pulse
* G2 is improperly adjusted. (Note 2)
output is small.


background image
-- 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
DISPLAY OF STANDBY/TIMER LIGHT FLASH COUNT
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 pos sible 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
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
ENTER
[Quitting Self-diagnostic screen]
To quit the entire self-diagnostic screen, turn off the power switch on the remote commander or the main unit.
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
STANDBY/SLEEP lamp
Lamp ON 0.3 sec.
Lamp OFF 0.3 sec.
Lamp OFF
3 sec.
2 times
4 times
5 times