Sony KV-XG25M8J Service Manual ▷ View online
MODEL
COMMANDER DEST.
CHASSIS NO.
KV-XG25M8J
RM-952 ME
SCC-U48J-A
KV-XG25P50
RM-952 Thailand
SCC-U49E-A
MODEL
COMMANDER DEST. CHASSIS NO.
CHASSIS
TRINITRON
®
COLOR TV
SERVICE MANUAL
BG-3R
TV
1
2
3
4
6
7
8
9
0
5
JUMP
SOUND
MODE
FAVORITE
PROGR
-
2
– 2 –
KV-XG25M8J/XG25P50
RM-952
SPECIFICATIONS
(KV-XG25P50)
Note
Power requirements
220-240 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/Bilingual system
A2 Bilingual B/G
Channel coverage
B/G
VHF: E2 to E12 / UHF: E21 to E69 / CATV: S01 to S03, S1 to S41
˘
˘
˘
˘
˘
(Antenna)
75-ohm external terminal
Audio output
5W + 5W
Number of terminal
D
(Video)
Input: 3*
Output: 1
Phono jacks; 1 V
P-P
, 75 ohms
* Two input lines available
≥
Audio
Input: 3*
Output: 1
Phono jacks; 500 mVrms
* Two input lines available
2
(Headphone)
Output: 1
Stereo Minijack
Picture tube
25 inch
Tube size (cm)
64
Measured diagonally
Screen size (cm)
60
Measured diagonally
Dimension (w/h/d, mm)
722
× 515 × 512
Mass (kg)
38
Design and specifications are subject to change without notice.
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.
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.
ANODE CAP TO THE METAL CHASSIS, CRT SHIELD, OR
CARBON PAINTED ON THE CRT, AFTER REMOVING THE
ANODE.
– 3 –
KV-XG25M8J/XG25P50
RM-952
SPECIFICATIONS
(KV-XG25M8J)
Note
Power requirements
110-240 V AC, 50/60 Hz
Power consumption (W)
Indicated on the rear of the TV
Television system
B/G, I, D/K, M
Color system
PAL, PAL 60, SECAM, NTSC4.43, NTSC3.58
Channel coverage
B/G
VHF: E2 to E12 / UHF: E21 to E69 / CATV: S01 to S03, S1 to S41
I
UHF: B21 to B68 / CATV: S01 to S03, S1 to S41
D/K
VHF: C1 to C12, R1 to R12 / UHF: C13 to C57,R21 to R60
CATV: S01 to S03, S1 to S41, Z1 to Z39
CATV: S01 to S03, S1 to S41, Z1 to Z39
M
VHF: A2 to A13 / UHF: A14 to A79
CATV: A-8 to A-2, A to W+4, W+6 to W+84
CATV: A-8 to A-2, A to W+4, W+6 to W+84
˘
˘
˘
˘
˘
(Antenna)
75-ohm external terminal
Audio output
5W + 5W
Number of terminal
D
(Video)
Input: 3*
Output: 1
Phono jacks; 1 V
P-P
, 75 ohms
* Two input lines available
≥
Audio
Input: 3*
Output: 1
Phono jacks; 500 mVrms
* Two input lines available
2
(Headphone)
Output: 1
Stereo Minijack
Picture tube
25 inch
Tube size (cm)
64
Measured diagonally
Screen size (cm)
60
Measured diagonally
Dimension (w/h/d, mm)
722
× 515 × 512
Mass (kg)
38
Design and specifications are subject to change without notice.
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.
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.
ANODE CAP TO THE METAL CHASSIS, CRT SHIELD, OR
CARBON PAINTED ON THE CRT, AFTER REMOVING THE
ANODE.
– 4 –
KV-XG25M8J/XG25P50
RM-952
TABLE OF CONTENTS
Section
Title
Page
SELF DIAGNOSIS FUNCTION
................................
5
1. GENERAL
........................................................................
9
2. DISASSEMBLY
2-1.
Rear Cover Removal ................................................ 24
2-2.
Speaker Removal ..................................................... 24
2-3.
Chassis Assy Removal ............................................. 24
2-4.
Service Position ....................................................... 24
2-5.
Replacement of Parts ............................................... 24
2-5-1. Replacement of Control Button .....................................
24
2-5-2. Replacement of Light Guide ..........................................
24
2-6.
Terminal Bracket Removal ...................................... 25
2-7.
H2 Board Removal .................................................. 25
2-8.
A and B6 Boards Removal ...................................... 25
2-9.
Picture Tube Removal .............................................. 26
2-10. Removal of Anode Cap ............................................ 26
3. SET-UP ADJUSTMENTS
3-1.
Beam Landing .......................................................... 27
3-2.
Convergence ............................................................. 28
3-3.
Focus Adjustment .................................................... 30
3-4.
G2 (Screen) and White Balance Adjustments ......... 31
4. CIRCUIT ADJUSTMENT
4-1.
Adjustments with Commander ................................ 32
4-2.
Adjustment Method ................................................. 32
4-3.
Picture Quality Adjustments .................................... 37
4-4.
Deflection Adjustment ............................................. 37
4-5.
H-Trapezoid Adjustment ......................................... 37
4-6.
A Board Adjustment After IC003 (Memory)
Replacement ............................................................. 37
Replacement ............................................................. 37
4-7.
Picture Distortion Adjustment ................................. 38
Section
Title
Page
5. DIAGRAMS
5-1.
Block Diagram ......................................................... 39
5-2.
Circuit Boards Location .......................................... 41
5-3.
Schematic Diagrams ................................................ 42
(1)
Schematic Diagram of B6 Boards ........................... 43
(2)
Schematic Diagrams of A Board ............................. 45
(3)
Schematic Diagram of H2 Board ............................... 61
(4)
Schematic Diagrams of C6 Board ........................... 63
(5)
Schematic Diagram of VM1 Board ......................... 65
5-4.
Voltage Measurements ............................................ 67
5-5.
Waveforms ............................................................... 71
5-6.
Printed Wiring Boards and Parts Location .............. 73
5-7.
Semiconductors ........................................................ 77
6. EXPLODED VIEWS
6-1.
Picture Tube ............................................................. 79
6-2.
Chassis ..................................................................... 80
7. ELECTRICAL PARTS LIST
....................................... 81