Sony KV-XA29K94 Service Manual ▷ View online
MODEL
COMMANDER
DEST.
CHASSIS NO.
CHASSIS
TRINITRON
®
COLOR TV
SERVICE MANUAL
BG3R
MODEL
COMMANDER DEST.
CHASSIS NO.
KV-XA29K94
RM-962
Korea
SCC-U58B-A
KV-XA34K94
RM-962
Korea
SCC-U58C-A
KV-XA34K94
KV-XA29K94
2
3
1
5
6
4
8
9
7
0
ENTER
JUMP
MUTING
MTS
VIDEO
PIC
MODE
TV/VIDEO FREEZE
SWAP
PIP
TV
DISPLAY
POWER
CH
VOL
MENU
FAVORITE
SURROUND
AUTO PROGR ADD/ERASE
CABLE
WAKE UP
SOUND
MODE
TV
PIP CH
PIP CH
SLEEP
RM-962
– 2 –
KV-XA29K94/XA34K94
RM-962
SPECIFICATIONS
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.
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.
Note
Power requirements
220-220 V AC, 60 Hz
Power consumption (W) Indicated on the rear of the TV
Television system
M
Color system
NTSC3.58
Stereo/Bilingual system
Korean Stereo
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
D 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
Input: 1
Phono jacks
(DVD) IN
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
(Headphones)
Output: 1
Stereo minijack
Picture tube
29 in.
34 in.
Tube size (cm)
72
86
Measured diagonally
Screen size (cm)
68
80
Measured diagonally
Dimension (w/h/d, mm)
722 x 576 x 516
895 x 674 x 590
Mass (kg)
51
78
Design and specifications are subject to change without notice.
KV-XA29K94/XA34K94
RM-962
– 3 –
TABLE OF CONTENTS
Section
Title
Page
SELF DIAGNOSIS FUNCTION ........................
4
1. GENERAL
..................................................... 7
2. DISASSEMBLY
2-1.
Rear Cover Removal ............................................ 25
2-2.
Speaker Removal ................................................. 25
2-3.
Chassis Assy Removal ......................................... 25
2-4.
F Bracket Removal .............................................. 25
2-5.
Service Position ................................................... 26
2-6.
Replacement of Parts ........................................... 26
2-6-1Replacement of Light Guide ................................
26
2-6-2Replacement of Power Button .............................
26
2-7.
HV Cap Block, PWB Holder and
J Board Removal ..................................................... 26
J Board Removal ..................................................... 26
2-8.
Terminal Bracket Removal .................................. 26
2-9.
D2 and D3 Boards Removal ............................... 27
2-10. P2 Board Removal ............................................... 27
2-11. H Board Removal ................................................ 27
2-12. A and B Boards Removal .................................... 27
2-13. Picture Tube Removal .......................................... 28
2-11. H Board Removal ................................................ 27
2-12. A and B Boards Removal .................................... 27
2-13. Picture Tube Removal .......................................... 28
3. ADVANCE OPERATION
3-1.
"RESET" Function ............................................... 29
4. SET-UP ADJUSTMENTS
4-1.
Beam Landing
................................................... 30
4-2.
Convergence
................................................... 31
4-3.
Focus Adjustment ................................................ 33
4-4.
G2 (Screen) and White Balance Adjustments ..... 34
5. CIRCUIT ADJUSTMENTS
5-1.
Adjustments with Commander ............................ 35
5-2.
Adjustment Method ............................................. 35
5-3.
Picture Quality Adjustments ................................ 40
5-4.
Display position Adjustment ............................... 40
5-5.
Deflection Adjustment ......................................... 40
5-6.
H-Trapezoid Adjustment .................................... 41
5-7.
A Board Adjustment After IC003
(memory) Replacement ....................................... 41
(memory) Replacement ....................................... 41
5-8.
Picture Distortion Adjustment ............................. 42
Section
Title
Page
6.
DIAGRAMS
6-1. Block Diagram ..................................................... 43
6-2. Circuit Boards Location ...................................... 45
6-3. Schematic Diagrams ............................................ 47
6-2. Circuit Boards Location ...................................... 45
6-3. Schematic Diagrams ............................................ 47
(1) Schematic Diagrams of F, J
and VM1 Boards ............................................ 47
(2) Schematic Diagram of A Board .................... 49
(3) Schematic Diagram of B Board .................... 65
(4) Schematic Diagram of P2 Board ................... 73
(5) Schematic Diagram of C6 Board ................. 75
(6) Schematic Diagram of H Board .................... 77
(7) Schematic Diagram of D2 Board .................. 79
(8) Schematic Diagram of D3 Board .................. 81
(3) Schematic Diagram of B Board .................... 65
(4) Schematic Diagram of P2 Board ................... 73
(5) Schematic Diagram of C6 Board ................. 75
(6) Schematic Diagram of H Board .................... 77
(7) Schematic Diagram of D2 Board .................. 79
(8) Schematic Diagram of D3 Board .................. 81
6-4. Voltage Measurements ......................................... 83
6-5. Waveforms ........................................................... 93
6-6. Printed Wiring Boards and Parts Location .......... 95
6-7. Semiconductors .................................................. 103
6-5. Waveforms ........................................................... 93
6-6. Printed Wiring Boards and Parts Location .......... 95
6-7. Semiconductors .................................................. 103
7.
EXPLODED VIEWS
7-1. Picture Tube ....................................................... 105
7-2. Chassis ............................................................... 106
7-2. Chassis ............................................................... 106
8.
ELECTRICAL PARTS LIST
............................... 107
– 4 –
KV-XA29K94/XA34K94
RM-962
The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY/TIMER lamp will automati-
cally begin to flash.
The number of times the lamp flashes translates to a probable source of the problem. A definition of the STANDBY/
TIMER lamp flash indicators is listed in the instruction manual for the user’s knowledge and reference. If an error
symptom cannot be reproduced, the remote commander can be used to review the failure occurrence data stored in
memory to reveal past problems and how often these problems occur.
cally begin to flash.
The number of times the lamp flashes translates to a probable source of the problem. A definition of the STANDBY/
TIMER lamp flash indicators is listed in the instruction manual for the user’s knowledge and reference. If an error
symptom cannot be reproduced, the remote commander can be used to review the failure occurrence data stored in
memory to reveal past problems and how often these problems occur.
1.
DIAGNOSTIC TEST INDICATORS
When an errors occurs, the STANDBY/TIMER lamp will flash a set number of times to indicate the possible cause of the
problem. If there is more than one error, the lamp will identify the first of the problem areas.
problem. If there is more than one error, the lamp will identify the first of the problem areas.
Result for all of the following diagnostic items are displayed on screen. No error has occured if the screen displays a “0”.
Diagnostic
Item
Description
• Power does not
turn on
• +B overcurrent
(OCP) or
overvoltage
(OVP)
overvoltage
(OVP)
• Vertical deflection
stopped
• Horizontal
deflection
overdrive
overdrive
• White balance
failure (no
PICTURE)
PICTURE)
• Micro reset
Detected
Symptoms
• Power does not come on.
• No power is supplied to the
• No power is supplied to the
TV.
• AC power supply is faulty.
• Power does not come on.
• Load on power line is
• Load on power line is
shorted.
• Has entered standby state
after horizontal raster.
• Vertical deflection pulse is
stopped.
• Power line is shorted or
power supply is stopped.
• No raster is generated.
• CRT cathode current
• CRT cathode current
detection reference pulse
output is small.
output is small.
• Power is shut down shortly,
after this return back to
normal.
normal.
• Detect Micro latch up.
Note 1: If a + B overcurrent is detected, stoppage of the vertical deflection is detected simultaneously.
The symptom that is diagnosed first by the microcontroller is displayed on the screen.
Note 2: Refer to screen (G2) Adjustment in section 3-4 of this manual.
* R(Q703), G(Q702) or B(Q701) out is faulty (C6 board).
SELF DIAGNOSTIC FUNCTION
No. of times
STANDBY/TIMER
lamp flashes
Does not light
2 times
5 times
—
Self-diagnostic
display/Diagnostic
result
—
002:000 or
002:001~255
003:001~255
004:001~255
003:001~255
004:001~255
at the same time
005:000 or
005:001~225
101:00 or
101:001~225
Probable
Cause
Location
• Power cord is not plugged
in.
• Fuse is burned out F4601
(F)
• H.OUT Q511 is shorted. (A
board)
• Q701, Q702, Q703 is
shorted (C6 board)
• -13V is not supplied. (A
board)
• IC 503 faulty (A board)
• G2 is improperly adjusted.
(Note 2)
• CRT problem.
• R(Q703), G(Q702) or
• R(Q703), G(Q702) or
B(Q701) out is faulty
(C6 board)
(C6 board)
• IC301 is faulty. (A board)
• No connection A board to
• No connection A board to
C6 board.
• Discharge CRT (C6 Board)
• Static discharge
• External noise
• Static discharge
• External noise