Read Sony KV-T25SZ8 Service Manual online
MODEL
COMMANDER DEST.
CHASSIS NO.
KV-T25SZ8
RM-870 Australia
SCC-J99F-A
SERVICE MANUAL
MODEL
COMMANDER DEST. CHASSIS NO.
TRINITRON
®
COLOR TV
BG-1S
CHASSIS
– 2 –
KV-T25SZ8
RM-870
SPECIFICATIONS
Note
Power requirements
110-240 V AC, 50/60 Hz
Power consumption (W)
Indicated on the rear of the TV
Television system
B/G
Color system
PAL, PAL 60, NTSC4.43, NTSC3.58(AV IN)
Stereo system
A2 Stereo (German) B/G
Channel coverage
VHF: 0 to 12, 5A, 9A / UHF: 28 to 69 / CATV: S01 to S03, S1 to S41
Audio output (speaker)
5W
×
2
Inputs
Antenna: 75 ohms
VIDEO IN jacks: phono jacks
Video: 1 Vp-p, 75 ohms
Audio: 500 mVrms, high impedance
Outputs
Headphone jack: minijack
MONITOR OUT jacks: phono jacks
Video: 1 Vp-p, 75 ohms
Audio: 500 mVrms
Picture tube
25 in.
Tube size (cm)
64
Measured diagonally
Screen size (cm)
60
Measured diagonally
Dimensions (w/h/d, mm)
613
×
542
×
472
Mass (kg)
32
Design and specifications are subject to change without notice.
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.
THE ANODE CAP TO THE METAL CHASSIS, CRT SHIELD, OR
CARBON PAINTED ON THE CRT, AFTER REMOVING THE
ANODE.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK
!
ON
THE SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND IN THE
PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE
THESE COMPONENTS WITH SONY PARTS WHOSE PART
NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN
SUPPLEMENTS PUBLISHED BY SONY.
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.
– 3 –
KV-T25SZ8
RM-870
TABLE OF CONTENTS
1. GENERAL
....................................................................
4
2. DISASSEMBLY
2-1.
Rear Cover Removal ............................................
9
2-2.
A Board Removal ................................................
9
2-3.
F1 Board Removal ...............................................
9
2-4.
Service Position ...................................................
9
2-5.
Replacement of Parts ...........................................
10
2-6.
Demagnetization Coil Removal ..........................
10
2-7.
Picture Tube Removal ..........................................
11
3. SET-UP ADJUSTMENTS
3-1.
Beam Landing ......................................................
12
3-2.
Convergence .........................................................
13
3-3.
Focus Adjustment ................................................
15
3-4.
G2 (Screen) and White Balance Adjustments .....
15
4. SELF DIAGNOSIS FUNCTION
.............................
16
5. CIRCUIT ADJUSTMENTS
5-1.
Adjustments with Commander ............................
17
5-2.
Adjustment Method .............................................
18
5-3.
A Board Adjustment after IC003 (Memory)
Replacement .........................................................
Replacement .........................................................
21
5-4.
Picture Distortion Adjustment .............................
21
6. DIAGRAMS
6-1.
Block Diagram ......................................................
23
6-2.
Circuit Boards Location .......................................
27
6-3.
Schematic Diagrams and Printed Wiring Boards.
27
(1)
Schematic Diagram of A Board ............................
31
(2)
Schematic Diagrams of A3, F1, C and
VM Boards ............................................................
VM Boards ............................................................
35
6-4.
Semiconductors .....................................................
43
7. EXPLODED VIEW
7-1.
Chassis ..................................................................
45
8. ELECTRICAL PARTS LIST
....................................
47
Section
Title
Page
Section
Title
Page
– 4 –
KV
-T25SZ8
-T25SZ8
RM-870
SECTION 1
GENERAL
The operating instructions mentioned here are partial abstracts from the
Operating Instructions Manual. The page numbers of the Operating
Instruction Manual remain as in this manual.
Operating Instructions Manual. The page numbers of the Operating
Instruction Manual remain as in this manual.
2
3
AUTO PROGR
AUTO PROGR