1
SERVICE MANUAL
FE-1 CHASSIS
MODEL
COMMANDER
DEST
CHASSIS NO.
MODEL
COMMANDER
DEST
CHASSIS NO.
RM-883
PROGR
MENU
/
KV-25B5E
RM-883
Spanish
SCC-Q05M-A
KV-29B5E
RM-883
Spanish
SCC-Q05N-A
®
MICR OFILM
TRINITRON ® COLOR TV
2
ITEM MODEL
Television System
Stereo System
Channel Coverage
Color System
Spanish
B/G/H, D/K
GERMAN/NICAM
Stereo
PAL B/G/H/ VHF : E2-E12 : E21-E69
CABLE TV (1) : S1-S41
CABLE TV (2) : S01-S05, M1-M10, U1-U10
ITALIA VHF : A-H2 (C) UHF : 21-69
PAL, SECAM
NTSC4.43, NTSC3.58
(VIDEO IN)
MODEL
25B5
29B5
Power Consumption
97W
108W
[PICTURE TUBE]
KV-25B5E
Super Trinitron
Approx. 63 cm (25 inches)
(Approx. 59 cm picture measured
diagonally)
110 degree deflection
KV-29B5E
Super Trinitron
Approx. 72 cm (29 inches)
(Approx. 68 cm picture measured
diagonally)
110 degree deflection
Input/Output Terminals
[REAR]
21-pin Euro connector (CENELEC standard).
-
Inputs for Audio and Video signals.
-
Inputs for RGB.
-
Outputs of TV Video and Audio signals.
21-pin Euro connector
-
Inputs for Audio and Video signals.
-
Inputs for S video.
-
Outputs forVideo and Audio signals (selectable).
[FRONT]
3 Video output - phono jack
3 Audio inputs - phono jacks
Headphone jack : stereo minijack
Sound output
2x20W (Music Power)
Power requirements
220 - 240V
Dimensions
KV-25B5
Approx 664x507x511 (w/h/d)
KV-29B5
Approx 751x578x529 (w/h/d)
Weight
KV-25B5
Approx 36 kg
KV-29B5
Approx 46 kg
Supplied accessories
RM-883 Remote Commander (1)
IEC designated R6 battery (2)
Other features
NICAM, FASTEXT, TOPTEXT
[RM-883]
Remote control system
Infrared control
Power requirements
1.5V dc
1 battery IEC designation
R6 (size AA)
Dimensions
Approx 65x225x21mm (w/h/d)
Weight
Approx 157g (Not including battery)
Design and specifications are subject to change without notice.
2
S
1
Model Name
Item
KV-25B5
KV-29B5
Pal Comb
OFF
PIP
OFF
RGB Priority
ON
Woofer Box
OFF
Scart 1
ON
Scart 2
ON
Front in (3)
ON
Scart 4
OFF
Projector
OFF
AKB in 16:9 mode
ON
Norm B/G
ON
Norm I
OFF
Norm D/K
ON
Norm AUS
OFF
Norm L
OFF
Norm SAT
OFF
Norm M
OFF
Teletext
ON
Nicam Stereo
ON
Language Preset
Spanish
3
21 pin connector
Connected
Not Connected (open)
* at 20Hz - 20kHz
19
17
15
13
11
9
7
5
3
1
20
18
16
14
12
10
8
6
4
2
21
Pin No
1
2
4
Signal
Signal level
1
Audio output B
(right)
Standard level : 0.5V rms
Output impedence : Less than 1kohm*
2
Audio output B
(right)
Standard level : 0.5V rms
Output impedence : More than 10kohm*
3
Audio output A
(left)
Standard level : 0.5V rms
Output impedence : Less than 1kohm*
4
Ground (audio)
5
Ground (blue)
6
Audio input A
(left)
Standard level : 0.5V rms
Output impedence : More than 10kohm*
7
Blue input
0.7 +/- 3dB, 75 ohms positive
8
Function select
(AV control)
High state (9.5-12V) : Part mode
Low state (0-2V) : TV mode
Input impedence : More than 10K ohms
Input capacitance : Less than 2nF
9
Ground (green)
10
Open
11
Green
Green signal : 0.7 +/- 3dB, 75 ohms,
positive
12
Open
13
Ground (red)
14
Ground (blanking)
15
_
_
Red input
0.7 +/- 3dB, 75 ohms, positive
_
(S signal Chroma
input)
0.3 +/- 3dB, 75 ohms, positive
16
Blanking input
(Ys signal)
High state (1-3V) Low state (0-0.4V)
Input impedence : 75 ohms
17
Ground (video
output)
18
Ground (video
input)
19
Video output
1V +/- 3dB, 75ohms, positive sync 0.3V
(-3+10dB)
20
_
_
Video input
1V +/- 3dB, 75ohms, positive sync 0.3V
(-3+10dB)
_
Video input
Y (S signal)
1V +/- 3dB, 75ohms, positive sync 0.3V
(-3+10dB)
21
Common ground
(plug, shield)
Signal
Ground
Ground
Y (S signal) input
C (S signal) input
Pin No.
1
2
3
4
Signal Level
1V
3dB 75 ohm, positive Sync. 0.3V -3 + 10dB
0.3V
3dB 75 ohm, positive Sync.
4
StBy LED
ON
ON
ON
OFF
OFF
(ON SCREEN
DISPLAY)
5
(DIGIT 5)
(VOLUME -)
(TV)
i +
Table 1
Flash Timing Example : e.g. error number 3
How to enter into Table 2
1.
Turn on the main power switch of the TV set and enter into the
`Standby Mode'.
2.
Press the following sequence of buttons on the Remote
Commander.
3.
The following table will be displayed indicating the error
count.
Table 2
Note: To clear the error count data press `80' on the Remote
commander.
ERROR
LED
ERROR
COUNT
No error
00
Not allowed (may be confused with Sircs response
flash!)
01
Protection circuit trip < ANY TIME >
02
Reserved
03
No vertical sync
04
AKB
05
IIC bus clock and/or data lines low at Power ON
06
NVM no IIC bus acknowledge at Power ON
07
Jungle controller no IIC acknowledge at Power ON
08
Tuner no acknowledge at Power ON
09
Sound processor no acknowledge at Power ON
10
Error
Times
2
-
3
-
4
-
5
-
6
-
7
-
8
-
9
-
10
-
FE-1 SELF DIAGNOSTIC SOFTWARE
The identification of errors within the FE-1 chassis is triggered in one of two ways :- 1: Busy or 2: Device failure to respond to IIC. In the event
of one of these situations arising the software will first try to release the bus if busy (Failure to do so will report with continuous flashing LED) and
then communicate with each device in turn to establish if a device is faulty. If a device is found to be faulty the relevant device number will be dis-
played through the LED (Series of flashes which must be counted) See Table 1., non fatal errors are reported using this method.
Each time the software detects an error it is stored within the NVM. See Table 2.
5
TABLE OF CONTENTS
CAUTION
SHORT CIRCUIT THE ANODE OF THE PICTURE TUBE AND THE
ANODE CAP TO THE METAL CHASSIS, CRT SHIELD, OR THE
CARBON PAINTED ON THE CRT, AFTER REMOVAL OF THE
ANODE CAP
WARNING !!
AN ISOLATING TRANSFORMER SHOULD BE USED DURING ANY
SERVICE WORK TO AVOID POSSIBLE SHOCK HAZARD DUE TO
LIVE CHASSIS. THE CHASSIS OF THIS RECEIVER IS DIRECTLY
CONNECTED TO THE POWER LINE.
SAFETY-RELATED COMPONENT WARNING !!
COMPONENTS IDENTIFIED BY SHADING AND MARKED
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.
ATTENTION
APRES AVOIR DECONNECTE LE CAP DE'LANODE,
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 RISQUE D'ELECTROCUTION PROVENANT
D'UN CHÁSSIS SOUS TENTION, UN TRANSFORMATEUR
D'ISOLEMENT DOIT ETRE UTILISÈ LORS DE TOUT DÈPANNAGE.
LE CHÁSSIS DE CE RÈCEPTEUR EST DIRECTMENT RACCORDÈ
Á L'ALIMENTATION SECTEUR.
ATTENTION AUX COMPOSANTS RELATIFS Á LA
SÈCURITÈ !!
LES COMPOSANTS IDENTIFIÈS PAR UNE TRAME ET PAR UNE
MARQUE
SUR LES SCHÈMAS DE PRINCIPE, LES VUES
EXPLOSÈES ET LES LISTES DE PIECES SONT D'UNE IMPORTANCE
CRITIQUE POUR LA SÈCURITÈ DU FONCTIONNEMENT, NE LES
REMPLACER QUE PAR DES COMPSANTS SONY DONT LE NUMÈRO
DE PIÈCE EST INDIQUÈ DANS LE PRÈSENT MANUEL OU DANS
DES SUPPLÈMENTS PUBLIÈS PAR SONY.
Section
Title
Page
Section
Title
Page
Self-Diagnostic Function
.....................4
1. GENERAL
Overview of TV buttons
.....................6
Adjusting the Picture and Sound
.....................7
Using the Sleep Timer
.....................8
Viewing Teletext
.....................8
Exchanging Programme Positions .....................9
Manually Tuning the TV
.....................9
Fine-Tuning Channels
.....................10
Using Optional Equipment
.....................10
Troubleshooting/Specifications
.....................11
2. DISASSEMBLY
2-1.
Speaker Cover Removal
.....................12
2-2.
Rear Cover Removal
.....................12
2-3.
Chassis Assy Removal
.....................13
2-4.
Service Position
.....................13
2-5.
S1 Board Removal
.....................13
2-6.
Picture Tube Removal
.....................14
Removal and Replacement of the
Main - Bracket Bottom Plates
.....................15
3. SET-UP ADJUSTMENTS
3-1.
Beam Landing
.....................16
3-2.
Convergence
.....................17
3-3.
Screen [G2] White Balance
.....................19
3-4.
Focus
.....................19
4. CIRCUIT ADJUSTMENTS
4-1.
Electrical Adjustments
.....................20
4-2.
Test Mode 2
.....................23
5. DIAGRAMS
5-1.
Block Diagram
.....................25
5-2.
Circuit Board Location
.....................32
5-3.
Schematic Diagrams and
Printed Wiring Boards
.....................32
*
S1 Board
.....................33
*
F Board
.....................36
*
A Board
.....................41
*
VM Board
.....................46
*
C Board
.....................49
*
H Board
.....................51
5-4.
Semiconductors
.....................53
5-5.
IC Blocks
.....................55
6. EXPLODED VIEWS
6-1.
Chassis
.....................56
6-2.
Picture Tube
.....................57
7. ELECTRICAL PARTS LIST
.....................58