Read Sony KV-LS212M50 Service Manual online
REVISION HISTORY
BX1S
MODEL
KV-LS212M50
KV-LS212M61
KV-LS212M81
KV-LS212N60
KV-LS212M61
KV-LS212M81
KV-LS212N60
PART NO. :
9-872-983-02
CHASSIS
NO.
SUFFIX
DATE
SUPP / CORR
DESCRIPTION
1
-01
2007/7
_ _
1st Issue
2
-02
2007/8
SUPP-1
KV-LS212M50(Vietnam)Option Bit. (
Page 35
)
Supplement-1 (
Page 79
)
TRINITRON
®
COLOR TV
SERVICE MANUAL
BX1S
CHASSIS
MODEL
COMMANDER DEST.
CHASSIS NO.
KV-LS212M50
RM-GA002
Vietnam
SCC-V79G-A
KV-LS212M61
RM-GA002
GE
SCC-V44V-A
KV-LS212M81
RM-GA002
Middle East SCC-V83M-A
KV-LS212N60
RM-GA002
Philippines
SCC-V80N-A
MODEL
COMMANDER DEST.
CHASSIS NO.
RM-GA002
– 2 –
KV-LS212M50/M61/M81/N60
RM-GA002
TABLE OF CONTENTS
SELF DIAGNOSTIC FUNCTION ....................................... 3
1. DISASSEMBLY
1-1.
Rear Cover Removal .................................................... 5
1-2.
Speaker Removal ......................................................... 5
1-3.
Service Position ........................................................... 5
1-4.
A Board Removal ........................................................ 5
1-5.
H1 Board Removal ...................................................... 5
1-6.
Picture Tube Removal .................................................. 6
2. WIRE DRESSING
2-1.
Mount Caution on CV board ....................................... 7
2-2.
Mount Caution on A board .......................................... 7
2-3.
Connector Assy, 5P (YUV wire) dressing .................. 8
2-4.
Connector dressing on A PWB .................................... 8
2-5.
AC Power Cord, Lead Assy, Speaker and
Lead Assy, Earth dressing at A board ......................... 8
Lead Assy, Earth dressing at A board ......................... 8
2-6.
Earth Coating Assy installation at CRT ...................... 9
2-7.
Caution for chassis docking process ........................... 9
2-8.
DGC Connector, Lead Assy, Speaker and
Lead Assy, Earth dressing ........................................... 9
Lead Assy, Earth dressing ........................................... 9
2-9.
Earth Assy, Coating dressing ..................................... 10
2-10. Wire Dressing on CV board ...................................... 10
2-11. Lead Assy, Speaker (Right) & Conn. Dressing ......... 10
2-12. Lead Assy, Speaker (Left), AC Power Cord
2-11. Lead Assy, Speaker (Right) & Conn. Dressing ......... 10
2-12. Lead Assy, Speaker (Left), AC Power Cord
and Front Control wire dressing ................................ 10
2-13. Lead Assy, Speaker wiredressing .............................. 11
2-14. DY Connector Dressing ............................................. 11
2-15. Lead Assy, G2 & Focus dressing ............................... 12
2-16. Conn Assy, 7P, Lead Assy, Earth &
2-14. DY Connector Dressing ............................................. 11
2-15. Lead Assy, G2 & Focus dressing ............................... 12
2-16. Conn Assy, 7P, Lead Assy, Earth &
Rotational Coil Conn dressing .................................. 12
2-17. HV Lead Assy dressing ............................................. 13
2-18. AC Power Cord Dressing .......................................... 13
2-18. AC Power Cord Dressing .......................................... 13
3. SET-UP ADJUSTMENTS
3-1.
Beam Landing Adjustment ........................................ 14
3-2.
Convergence Adjustment ........................................... 14
3-3.
Focus Adjustment ...................................................... 16
3-4.
G2 (SCREEN) Adjustment ........................................ 16
3-5.
White Balance Adjustment ........................................ 16
3-6.
Sub Bright Adjustment .............................................. 16
4. CIRCUIT ADJUSTMENTS
4-1.
Adjustments With Commander ................................. 17
4-2.
Adjustment Method ................................................... 18
4-3.
Picture Quality Adjustment ....................................... 38
4-3-1. P MAX/Contrast Adjustment ......................... 38
4-3-2. Sub Color Adjustment .................................... 38
4-3-3. Sub Hue Adjustment ....................................... 38
4-3-1. P MAX/Contrast Adjustment ......................... 38
4-3-2. Sub Color Adjustment .................................... 38
4-3-3. Sub Hue Adjustment ....................................... 38
4-4.
Geometry Adjustment ................................................ 39
4-4-1. General Setting ............................................... 39
4-4-2. Pal 50Hz Normal Mode .................................. 39
4-4-1. General Setting ............................................... 39
4-4-2. Pal 50Hz Normal Mode .................................. 39
5. DIAGRAMS
5-1.
Block Diagram ........................................................... 40
5-2.
Circuit Boards Location ............................................ 41
5-3.
Schematic Diagram Information ............................... 41
5-3-1. A Board — (Block 001) .................................. 42
5-3-2. A Board — (Block 002) .................................. 44
5-3-3. A Board — (Block 003) .................................. 46
5-3-4. A Board — (Block 004) .................................. 48
5-3-5. A Board — (Block 005) .................................. 50
5-3-6. A Board — (Block 006) .................................. 52
5-3-7. A Board — (Block 007) .................................. 54
5-3-8. CV Board — (Block 001) ............................... 55
5-3-9. H1 Board Schematic Diagram ........................ 56
5-3-1. A Board — (Block 001) .................................. 42
5-3-2. A Board — (Block 002) .................................. 44
5-3-3. A Board — (Block 003) .................................. 46
5-3-4. A Board — (Block 004) .................................. 48
5-3-5. A Board — (Block 005) .................................. 50
5-3-6. A Board — (Block 006) .................................. 52
5-3-7. A Board — (Block 007) .................................. 54
5-3-8. CV Board — (Block 001) ............................... 55
5-3-9. H1 Board Schematic Diagram ........................ 56
5-4.
Voltage Measurement and Waveforms ...................... 57
5-5.
Printed Wiring Boards ............................................... 60
5-6.
Semiconductors .......................................................... 63
6. EXPLODED VIEWS
6-1.
Picture Tube, Speaker Bracket and Chassis .............. 65
7. ELECTRICAL PARTS LIST .............................................. 67
OPERATING INSTRUCTIONS
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.
Section
Title
Page
Section
Title
Page
– 3 –
KV-LS212M50/M61/M81/N60
RM-GA002
The units in this manual contain a self diagnostic function. If an error occurs, the STANDBY (1) indicator will automatically
begin to flash. The number of times the STANDBY (1) indicator flashes 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 flashes 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. DIAGNOSTIC 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 occurred if the screen displays a "0".
SELF DIAGNOSTIC FUNCTION
Diagnosis
Item
Description
No Power
+B overcurrent
(OCP)
(OCP)
V-Protect (OVP)
IK (AKB)
Power supply
NG (+5V) for
Video Processor
NG (+5V) for
Video Processor
No. of timer
STANDBY (1)
indicator flashes
Does not light
2 times
4 times
5 times
8 times
Diagnostic Result
on screen display
on screen display
–
2:0
or
2:1 ~ 255
4:000
or
4:1 ~ 255
5:0
or
5:1 ~ 255
8:0
or
8:1 ~ 255
Probable Cause
Location
• Power cord is not plugged
in.
• Fuse is burned out (F600)
A board.
• H OUT (Q805) is shorted.
(A board)
• IC751 is shorted. (C board
or CV board)
• +13V is not supplied.
(A board)
• IC804 is faulty. (A board)
• Video OUT (IC751) is
faulty. (C board or CV board)
• IC001 is faulty. (A board)
• Screen (G2) is improperly
• Screen (G2) is improperly
adjusted.
• IC604 faulty.
• IC602 faulty.
• IC602 faulty.
2. STANDBY INDICATOR BLINKING PROCESS
The example above represents for 4 times blink
Lamp OFF 3 seconds
Lamp ON 300ms
Lamp OFF 300ms
3. STANDBY INDICATOR ON TV FRONT PANEL
Standby indicator
Detected
Symptoms
• Power does not turn on.
• No power is supplied on TV.
• AC Power supply is faulty.
• No power is supplied on TV.
• AC Power supply is faulty.
• Power does not turn on.
• Load on power line is shorted.
• 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 shorted.
• 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.