Sony KV-XA25M31 Service Manual ▷ View online
MODEL
COMMANDER DEST. CHASSIS NO.
CHASSIS
TRINITRON
®
COLOR TV
SERVICE MANUAL
BG3R
MODEL
COMMANDER DEST.
CHASSIS NO.
KV-XA25M61
RM-954
GE
SCC-U52D-A
KV-XA25M61
RM-954
Malaysia
SCC-U45G-A
KV-XA25M31
RM-954
OCE
SCC-U44D-A
KV-XA25M90
RM-954
Hong Kong SCC-U50D-A
KV-XA25M80
RM-954
Singapore
SCC-U39B-A
KV-XA25M50
RM-954
Malaysia
SCC-U45H-A
1
4
7
-/--
2
5
8
0
3
6
9
FAVORITE
SOUND
MODE
MODE
PIC MODE
ENTER
MENU
A/B
SURROUND
1
2
3
4
5
6
7
8
0
-/--
9
FAVORITE
SOUND
MODE
MODE
SURROUND
PIP PROGR
PIP PROGR
ENTER
PIC MODE
RM-953
RM-954
KV-XA25M87
RM-953
ME
SCC-U48F-A
KV-XA25M84
RM-953
ME
SCC-U48G-A
KV-XA25M86
RM-953
ME
SCC-U48H-A
– 2 –
KV-XA25M61/XA25M31/XA25M90/XA25M80/XA25M50
RM-954
KV-XA25M87/XA25M84/XA25M86
RM-953
SPECIFICATIONS
(except KV-XA25M87/XA25M86/XA25M84)
Note
Power requirements
110-240 V AC, 50/60 Hz
KV-XA25M61/XA25M80
220-240 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
Stereo/Bilingual system
NICAM Stereo/Bilingual B/G, I, DK; A2 Stereo/Bilingual B/G
Except KV-XA25M50/XA25M80
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 (Speaker)
8W + 8W
(TWEETER supplied)
Number of terminal
D
(Video)
Input: 4*
Output: 1
* Three input lines available
Phono jacks; 1 V
P-P
, 75 ohms
≥
(Audio)
Input: 4*
Output: 1
* Three input lines available
Phono jacks; 500 mVrms
(S Video)
Input: 2
Y : 1 Vp-p, 75 ohms,
unbalanced, sync
negative
negative
C : 0.286 Vp-p, 75 ohms
(Component Video)
Input: 1
Phono jacks
Y : 1 Vp-p, 75 ohms,
sync negative
C
Y : 1 Vp-p, 75 ohms,
sync negative
C
B
: 0.7 Vp-p, 75 ohms
C
R
: 0.7 Vp-p, 75 ohms
Audio : 500 mVrms
2
(Headphones)
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)
696 x 513x 500
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.
THE ANODE CAP TO THE METAL CHASSIS, CRT SHIELD, OR
CARBON PAINTED ON THE CRT, AFTER REMOVING THE
ANODE.
– 3 –
KV-XA25M61/XA25M31/XA25M90/XA25M80/XA25M50
RM-954
KV-XA25M87/XA25M84/XA25M86
RM-953
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, I, D/K, M
Color system
PAL, PAL 60, SECAM, NTSC4.43, NTSC3.58
Teletext language
English, Arabic, French
KV-XA25M86 only
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 (Speaker)
8W + 8W
8W + 8W
(TWEETER supplied)
KV-XA25M87 only
Number of terminal
D
(Video)
Input: 4*
Output: 1
* Three input lines available
Phono jacks; 1 V
P-P
, 75 ohms
≥
(Audio)
Input: 4*
Output: 1
* Three input lines available
Phono jacks; 500 mVrms
(S Video)
Input: 2
Y : 1 Vp-p, 75 ohms,
unbalanced, sync
negative
negative
C : 0.286 Vp-p, 75 ohms
(Component Video)
Input: 1
Phono jacks
Y : 1 Vp-p, 75 ohms,
sync negative
C
Y : 1 Vp-p, 75 ohms,
sync negative
C
B
: 0.7 Vp-p, 75 ohms
C
R
: 0.7 Vp-p, 75 ohms
Audio : 500 mVrms
2
(Headphones)
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)
696 x 513x 500
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.
THE ANODE CAP TO THE METAL CHASSIS, CRT SHIELD, OR
CARBON PAINTED ON THE CRT, AFTER REMOVING THE
ANODE.
(KV-XA25M87/XA25M86/XA25M84)
– 4 –
KV-XA25M61/XA25M31/XA25M90/XA25M80/XA25M50
RM-954
KV-XA25M87/XA25M84/XA25M86
RM-953
TABLE OF CONTENTS
Section
Title
Page
SELF DIAGNOSIS FUNCTION
................................
5
1. GENERAL
........................................................................
8
2. DISASSEMBLY
2-1.
Rear Cover Removal ............................................... 46
2-2.
Speaker Removal ..................................................... 46
2-3.
Chassis Assy Removal ............................................. 46
2-4.
F Bracket Removal .................................................. 46
2-5.
Service Position ....................................................... 46
2-6.
Replacement of Parts ............................................... 46
2-6-1 Replacement of Light Guide ..............................................
46
2-6-2 Replacement of Power Button ...........................................
46
2-7.
HV Cap Block, PWB Holder and J Board Removal .. 47
2-8.
Terminal Bracket Removal ...................................... 47
2-9.
B1 Board Removal .................................................. 47
2-10. H Board Removal .................................................... 47
2-11.
2-11.
A and B Boards Removal ........................................ 47
2-12. Picture Tube Removal ............................................. 48
3. ADVANCE OPERATION
3-1.
"RESET" Function ................................................... 49
4. SET-UP ADJUSTMENTS
4-1.
Beam Landing .......................................................... 50
4-2.
Convergence Adjustment ......................................... 51
4-3.
Focus Adjustment .................................................... 53
4-4.
G2 (Screen) and White Balance Adjustments ......... 54
5. CIRCUIT ADJUSTMENTS
5-1.
Adjustments with Commander ................................ 55
5-2.
Adjustment Method ................................................. 55
5-3.
Picture Quality Adjustments .................................... 61
5-4.
Deflection Adjustment ............................................. 61
5-5.
H-Trapezoid Adjustment ......................................... 62
5-6.
A Board Adjustment after IC003 Replacement ...... 62
5-7.
Picture Distortion Adjustment ................................. 63
Section
Title
Page
6.
DIAGRAMS
6-1. Block Diagram .......................................................... 65
6-2. Circuit Board Location ............................................. 67
6-3. Schematic Diagrams ................................................. 68
6-2. Circuit Board Location ............................................. 67
6-3. Schematic Diagrams ................................................. 68
(1) Schematic Diagram of H Board ......................... 69
(2) Schematic Diagram of A Board .......................... 71
(3) Schematic Diagram of B Board ......................... 87
(4) Schematic Diagram of P2 Board ....................... 89
(5) Schematic Diagram of V1 Board ........................ 91
(6) Schematic Diagram of C6 Board ........................ 93
(7) Schematic Diagram of B1 Board ........................ 94
(8) Schematic Diagram of VM1 Board .................... 95
(9) Schematic Diagram of F and J Boards ............... 96
(10) Schematic Diagram of J1 Board ....................... 97
(2) Schematic Diagram of A Board .......................... 71
(3) Schematic Diagram of B Board ......................... 87
(4) Schematic Diagram of P2 Board ....................... 89
(5) Schematic Diagram of V1 Board ........................ 91
(6) Schematic Diagram of C6 Board ........................ 93
(7) Schematic Diagram of B1 Board ........................ 94
(8) Schematic Diagram of VM1 Board .................... 95
(9) Schematic Diagram of F and J Boards ............... 96
(10) Schematic Diagram of J1 Board ....................... 97
6-4.
Voltage Measurements ............................................ 101
6-5.
Waveforms .............................................................. 108
6-6.
Printed Wiring Boards and Parts Location ............. 109
6-7.
Semiconductors ....................................................... 117
7.
EXPLODED VIEWS
7-1.
Picture Tube ............................................................ 119
7-2.
Chassis .................................................................... 120
8.
ELECTRICAL PARTS LIST
.................................... 121