Read Sony KV-XR25M31 Service Manual online
MODEL
COMMANDER DEST. CHASSIS NO.
CHASSIS
TRINITRON
®
COLOR TV
SERVICE MANUAL
BX1
MODEL
COMMANDER DEST.
CHASSIS NO.
KV-XR25M31
RM-W103 Oceania
SCC-V03D-A
– 2 –
KV-XR25M31
RM-W103
TABLE OF CONTENTS
SELF DIAGNOSTIC FUNCTION .............................. 3
1. DISASSEMBLY
1-1. Rear Cover Removal ................................................. 6
1-2. Speaker Block Assy Removal ................................... 6
1-3. Chassis Assy Removal .............................................. 6
1-4. Service Position ........................................................ 6
1-5. F Board Removal ...................................................... 6
1-6. Terminal Bracket and J Board Removal ................... 6
1-7. H3 Board Removal .................................................... 7
1-8. A Board Removal ...................................................... 7
1-9. Picture Tube Removal ............................................... 8
1-2. Speaker Block Assy Removal ................................... 6
1-3. Chassis Assy Removal .............................................. 6
1-4. Service Position ........................................................ 6
1-5. F Board Removal ...................................................... 6
1-6. Terminal Bracket and J Board Removal ................... 6
1-7. H3 Board Removal .................................................... 7
1-8. A Board Removal ...................................................... 7
1-9. Picture Tube Removal ............................................... 8
2. SET-UP ADJUSTMENTS
2-1. Beam Landing ........................................................... 9
2-2. Convergence ............................................................ 10
2-3. Focus Adjustment .................................................... 12
2-4. G2 (SCREEN) Adjustments ................................... 12
2-5. White Balance Adjustment ..................................... 12
2-2. Convergence ............................................................ 10
2-3. Focus Adjustment .................................................... 12
2-4. G2 (SCREEN) Adjustments ................................... 12
2-5. White Balance Adjustment ..................................... 12
3. CIRCUIT ADJUSTMENTS
3-1. Adjustment With Commander ................................ 13
3-2. Adjustment Method ................................................ 14
3-3. Picture Quality Adjustment .................................... 30
3-4. Deflection Adjustment ............................................ 30
3-5. Picture Distortion Adjustment ................................ 32
3-2. Adjustment Method ................................................ 14
3-3. Picture Quality Adjustment .................................... 30
3-4. Deflection Adjustment ............................................ 30
3-5. Picture Distortion Adjustment ................................ 32
Section
Title
Page
Section
Title
Page
4. DIAGRAMS
4-1. Block Diagram ........................................................ 34
4-2. Circuit Boards Location .......................................... 35
4-3. Schematic Diagram ................................................. 35
4-2. Circuit Boards Location .......................................... 35
4-3. Schematic Diagram ................................................. 35
4-3-1. C Board Schematic Diagram ....................... 36
4-3-2. A Board — Processor (Block A) ................. 38
4-3-3. A Board — Audio (Block B) ....................... 40
4-3-4. A Board — Power Supply/Deflection
(Block C) .................................. 42
4-3-5. A Board — Tuner (Block D) ....................... 44
4-3-6. A Board — Jack (Block E) .......................... 46
4-3-7. A Board — Heat Sink (Block F) ................. 48
4-3-8. J1 and F Board Schematic Diagram ............ 49
4-3-9. H3 Board Schematic Diagram ..................... 50
4-3-10. VM Board Schematic Diagram .................. 52
4-3-2. A Board — Processor (Block A) ................. 38
4-3-3. A Board — Audio (Block B) ....................... 40
4-3-4. A Board — Power Supply/Deflection
(Block C) .................................. 42
4-3-5. A Board — Tuner (Block D) ....................... 44
4-3-6. A Board — Jack (Block E) .......................... 46
4-3-7. A Board — Heat Sink (Block F) ................. 48
4-3-8. J1 and F Board Schematic Diagram ............ 49
4-3-9. H3 Board Schematic Diagram ..................... 50
4-3-10. VM Board Schematic Diagram .................. 52
4-4. Voltage Measurement and Waveforms ................... 54
4-5. Printed Wiring Boards and Parts Location ............. 58
4-6. Semiconductors ....................................................... 63
4-5. Printed Wiring Boards and Parts Location ............. 58
4-6. Semiconductors ....................................................... 63
5. EXPLODED VIEWS
5-1. Picture Tube ............................................................ 65
5-2. Chassis ..................................................................... 66
5-2. Chassis ..................................................................... 66
6. ELECTRICAL PARTS LIST .................................... 67
INSTRUCTION MANUAL
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-XR25M31
RM-W103
The units in this manual contain a self diagnostis function. If an error occurs, the STANDBY (1) indicator will automatically
begin to flash. The number of times the STANDBY (1) indicator flasher translates to a probable source of the problem. 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.
begin to flash. The number of times the STANDBY (1) indicator flasher translates to a probable source of the problem. 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.
DIAGNOSIS TEST INDICATORS
When an errors occurs, the STANDBY/(1) indicator will flash a set number of times to indicate the possible cause of the
problem. If there is more than one error, the indicator will identify the first of the problem areas.
problem. If there is more than one error, the indicator will identify the first of the problem areas.
Result for all of the following diagnosis items are displayed on screen. No error has occured if the screen displays a "0".
Diagnosis
Item
Description
• Power does not
turn on
• +B overcurrent
(OCP)*
• I-Port
• IK (AKB)
• HV Protect
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.
• No power supply to CRT
ANODE.
• No RASTER is generated.
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 2-4 of this manual.
SELF DIAGNOSIS FUNCTION
No. of times
STANDBY/TIMER
lamp flashes
Does not light
2 times
4 times
5 times
8 times
Self-diagnostic
display/Diagnosis
result
—
2:0
2:1 ~ 255
4:0
4:1 ~ 255
5:0
5:1 ~ 255
8:0
8:1 ~ 255
Probable
Cause
Location
• Power cord is not plugged
in.
• Fuse is burned out (F4601)
(A Board)
• H.OUT (Q511) is shorted.
(A board)
• IC751 is shorted.
(C/CV Board)
• +13V is not supplied.
(A Board)
• IC503 voltage list is faulty.
(A Board)
• Video OUT (IC751) is faulty.
(C Board)
• IC001 is faulty. (A Board)
• Screen (G2) is improperly
• Screen (G2) is improperly
adjusted.
• IC604 faulty.
• IC607 faulty.
• IC607 faulty.
– 4 –
KV-XR25M31
RM-W103
Diagnosis Item
Flash Count*
+B overcurrent
2 times
I-Prot
4 times
IK (AKB)
5 times
HV Protect
8 times
* One flash count is not used for self-diagnosis.
FLASH RED
n Please refer diagnosis item.
FLASH GREEN
n OK
2. DISPLAY OF STANDBY/(1) indicator FLASH
COUNT
3. STOPPING THE STANDBY/(1) indicator FLASH
Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY/(1) lamp
from flashing.
from flashing.
4. SELF-DIAGNOSTIC SCREEN DISPLAY
For errors with symptoms such as "power sometimes shuts off" or "screen sometimes goes out" that cannot be confirmed,
it is possible to bring up past occurrence of failure on the screen for confirmation.
it is possible to bring up past occurrence of failure on the screen for confirmation.
[To Bring Up Screen Test]
In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below:
In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below:
[display] / channel [5] / volume [-] / Power
/ TV
˘
Note that this differs from entering the service mode (volume [+]).
Note that this differs from entering the service mode (volume [+]).
Self-Diagnostic screen display
Lamp OFF 3 sec
Lamp ON 300ms
Lamp OFF 300ms
2 :
0
3 :
N/A
4 :
0
5 :
1
8 :
0
101 :
N/A
SELF DIAGNOSTIC
Numeral "0" means that no fault was detected.
Numeral "1" means the number of a fault occurrence (1~255).
STANDBY indicator