Sony KV-XA25M80 Service Manual ▷ View online
MODEL
COMMANDER
DEST.
CHASSIS NO.
KV-XA25M80
RM-954
Vietnam
SCC-U56C-A
KV-XA25M83
RM-954
Vietnam
SCC-U56E-A
KV-XA25N90
RM-914
Philippines
SCC-U51B-A
TRINITRON
®
COLOR TV
SERVICE MANUAL
BG-3R
RM-914
RM-954
CHASSIS
MODEL
COMMANDER
DEST.
CHASSIS NO.
RETURN
MENU
PIC MODE
WAKE UP
SOUND
MODE
SLEEP
CABLE
AUTO
PROGRAM
ADD/
ERASE
FAVORITE
SURROUND
MTS
MUTING
DISPLAY
POWER
VIDEO
TV
1
2
5
8
7
4
0
3
9
6
1
4
7
-/--
2
5
8
0
3
6
9
FAVORITE
SOUND
MODE
MODE
PIC MODE
ENTER
MENU
A/B
SURROUND
– 2 –
KV-XA25M80/XA25M83/XA25N90
RM-954
RM-914
SPECIFICATIONS
(KV-XA25M83/XA25M80)
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: Z1 to Z39, S01 to S03, S1 to S41
CATV: Z1 to Z39, S01 to S03, S1 to S41
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)
6W + 6W
KV-XA25M83
8W + 8W
KV-XA25M80
3D Woofer
15W
KV-XA25M83 only
Number of terminal
D(Video)
Input: 4 *Output: 1
Phono jacks; 1 VP-P, 75 ohms
*Three input lines available
≥
(Audio)
Input: 4 *Output: 1
Phono jacks; 500 mVrms
*Three input lines available
(S Video)
Input: 2
Y: 1 Vp-p, 75 ohms,
unbalanced, sync negative
C: 0.286 Vp-p, 75 ohms
unbalanced, sync negative
C: 0.286 Vp-p, 75 ohms
(Component Video) Input: 1
Phono jacks;
Y: 1 Vp-p, 75 ohms,
sync negative
C
sync negative
C
B
: 0.7 Vp-p, 75 ohms
C
R
: 0.7 Vp-p, 75 ohms
Audio: 500 mVrms
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)
696
× 539 × 500
KV-XA25M83
696
× 513 × 500
KV-XA25M80
Mass (kg)
40
KV-XA25M83
38
KV-XA25M80
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.
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.
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-XA25M80/XA25M83/XA25N90
RM-954
RM-914
SPECIFICATIONS
(KV-XA25N90)
Note
Power requirements
110-240 V AC, 50/60 Hz
Power consumption (W) Indicated on the rear of the TV
Television system
M
Color system
NTSC3.58, PAL*, PAL 60*, SECAM*, NTSC4.43*
*AV IN only
Stereo/Bilingual system
MTS
Channel coverage
VHF: 2 to 13 / UHF: 14 to 69 / CATV: 1 to 125
˘
˘
˘
˘
˘
(Antenna)
75-ohm external terminal
Audio output (speaker)
8W + 8W
Number of terminal
VIDEO
Input: 4* Output: 1
Phono jacks; 1 V
P-P
, 75 ohms
*Three input lines available
AUDIO
Input: 4* Output: 1
Phono jacks; 500 mVrms
*Three input lines available
S VIDEO
Input: 2
Y:1 Vp-p, 75 ohms,
unbalanced, sync negative
C: 0.286 Vp-p, 75 ohms
unbalanced, sync negative
C: 0.286 Vp-p, 75 ohms
COMPONENT VIDEO
Output: 1
Stereo minijack
(DVD) IN
Picture tube
25 inch
Tube size (cm)
64
Measured diagonally
Screen size (cm)
60
Measured diagonally
Dimension (w/h/d, mm)
696
× 513 × 499
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.
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.
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.
– 4 –
KV-XA25M80/XA25M83/XA25N90
RM-954
RM-914
TABLE OF CONTENTS
Section
Title
Page
Section
Title
Page
SELF DIAGNOSTIC FUNCTION ...........................
5
1. GENERAL ........................................................
8
2. DISASSEMBLY
2-1. 3D Speaker Box Removal ....................................... 40
2-2. Rear Cover Removal ............................................... 40
2-3. Speaker Removal .................................................... 40
2-4. Chassis Assy Removal ............................................ 40
2-5. F BRACKET REMOVAL ....................................... 40
2-6. Service Position ...................................................... 40
2-7. Replacement Of Parts ............................................. 41
2-2. Rear Cover Removal ............................................... 40
2-3. Speaker Removal .................................................... 40
2-4. Chassis Assy Removal ............................................ 40
2-5. F BRACKET REMOVAL ....................................... 40
2-6. Service Position ...................................................... 40
2-7. Replacement Of Parts ............................................. 41
2-7-1. Light Guide .................................................. 41
2-7-2. Power Button ................................................ 41
2-7-2. Power Button ................................................ 41
2-8. HV Cap Block, PWB Holder, J and J1 boards
removal .................................................................... 41
2-9. Terminal Bracket Removal ..................................... 41
2-10. B1 Board Removal .................................................. 41
2-11. H Board Removal .................................................... 41
2-12. A and B Boards Removal ....................................... 41
2-13. Picture Tube Removal ............................................. 42
2-10. B1 Board Removal .................................................. 41
2-11. H Board Removal .................................................... 41
2-12. A and B Boards Removal ....................................... 41
2-13. Picture Tube Removal ............................................. 42
3. ADVANCE OPERATION
3-1. "RESET" FUNCTION ............................................ 43
4. SET-UP ADJUSTMENTS
4-1. Beam Landing ......................................................... 44
4-2. Convergence ............................................................ 45
4-3. Focus Adjustment .................................................... 47
4-4. G2 (SCREEN) and White Balance Adjustment ..... 48
4-2. Convergence ............................................................ 45
4-3. Focus Adjustment .................................................... 47
4-4. G2 (SCREEN) and White Balance Adjustment ..... 48
5. CIRCUIT ADJUSTMENTS
5-1. Adjustment With Commander ................................ 49
5-2. Adjustment Method ................................................ 49
5-3. Picture Quality Adjustments ................................... 55
5-4. Deflection Adjustment ............................................ 55
5-5. H-Trapezoid Adjustment ......................................... 56
5-6. A Board Adjustment After IC003 Replacement .... 56
5-7. Picture Distortion Adjustment ................................ 57
5-2. Adjustment Method ................................................ 49
5-3. Picture Quality Adjustments ................................... 55
5-4. Deflection Adjustment ............................................ 55
5-5. H-Trapezoid Adjustment ......................................... 56
5-6. A Board Adjustment After IC003 Replacement .... 56
5-7. Picture Distortion Adjustment ................................ 57
6. DIAGRAMS
6-1. BLOCK DIAGRAM ............................................... 59
6-2. CIRCUIT BOARDS LOCATION .......................... 61
6-3. SCHEMATIC DIAGRAM ...................................... 62
6-2. CIRCUIT BOARDS LOCATION .......................... 61
6-3. SCHEMATIC DIAGRAM ...................................... 62
(1) Schematic Diagram of H Board ........................ 63
(2) Schematic Diagram of A Board ....................... 65
(3) Schematic Diagram of B Board ........................ 81
(4) Schematic Diagram of C6 Board ...................... 83
(5) Schematic Diagram of VM1 Board .................. 85
(6) Schematic Diagrams of J1 and F Boards .......... 87
(7) Schematic Diagram of B1 and J Boards ........... 89
(2) Schematic Diagram of A Board ....................... 65
(3) Schematic Diagram of B Board ........................ 81
(4) Schematic Diagram of C6 Board ...................... 83
(5) Schematic Diagram of VM1 Board .................. 85
(6) Schematic Diagrams of J1 and F Boards .......... 87
(7) Schematic Diagram of B1 and J Boards ........... 89
6-4. VOLTAGE LIST MEASUREMENT ..................... 93
6-5. WAVEFORMS ........................................................ 97
6-6. Printed Wiring Boards and Parts Location ............. 99
6-7. SEMICONDUCTORS .......................................... 107
6-5. WAVEFORMS ........................................................ 97
6-6. Printed Wiring Boards and Parts Location ............. 99
6-7. SEMICONDUCTORS .......................................... 107
7. EXPLODED VIEWS
7-1. PICTURE TUBE ................................................... 109
7-2. CHASSIS .............................................................. 110
7-3. 3D SPEAKER ....................................................... 110
7-2. CHASSIS .............................................................. 110
7-3. 3D SPEAKER ....................................................... 110
8 ELECTRICAL PARTS LIST ..........................
111
