KV-AW21M50 (serv.man3) — Sony TV Service Manual (repair manual)

Model
KV-AW21M50 (serv.man3)
Pages
84
Size
10.33 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / SUPPLEMENT-1
File
kv-aw21m50-sm3.pdf
Date

View Sony KV-AW21M50 (serv.man3) Service Manual online

REVISION HISTORY
BX1S
MODEL
KV-AW21M50
KV-AW21M50
KV-AW21M81
KV-AW21P50
PART NO. : 
9-872-929-02
CHASSIS
NO.
SUFFIX
DATE
SUPP / CORR
DESCRIPTION
1
-01
2006/08
_ _
1st Issue
2
-02
2007/01
SUPP -1
Production plant Change from SOEM to STT for
Model KV-AW-21M50 (GE), 
(Page 69)
TRINITRON 
®
 
COLOR TV
RM-GA002
SERVICE MANUAL
BX1S
CHASSIS
MODEL
COMMANDER DEST.
CHASSIS NO.
KV-AW21M50
RM-GA002
GE
SCC-V44M-A
KV-AW21M50
RM-GA002
Malaysia
SCC-V37W-A
KV-AW21M81
RM-GA002
Russia
SCC-V65H-A
KV-AW21P50
RM-GA002
East Africa
SCC-V19H-A
MODEL
COMMANDER   DEST.
CHASSIS NO.
– 2 –
KV-AW21M50/M81/P50
RM-GA002
TABLE OF CONTENTS
SELF DIAGNOSTIC FUNCTION...................................... 3
1. DISASSEMBLY
1-1.
Rear Cover Removal .................................................... 5
1-2.
Speaker Removal ......................................................... 5
1-3.
Chassis Assy Removal ................................................. 5
1-4.
Service Position ........................................................... 5
1-5.
A Board Removal ........................................................ 5
1-6.
H1 Board Removal ...................................................... 5
1-7.
Picture Tube Removal .................................................. 6
2. SET-UP ADJUSTMENTS
2-1.
Beam Landing Adjustment .......................................... 7
2-2.
Convergence Adjustment ............................................. 7
2-3.
Focus Adjustment ........................................................ 9
2-4.
G2 (SCREEN) Adjustment .......................................... 9
2-5.
White Balance Adjustment .......................................... 9
3. CIRCUIT ADJUSTMENTS
3-1.
Adjustments With Commander ................................. 10
3-2.
Adjustment Method ................................................... 11
3-3.
Picture Quality Adjustment ....................................... 30
3-3-1. P MAX/Contrast Adjustment ......................... 30
3-3-2. Sub Color Adjustment .................................... 30
3-3-3. Sub Hue Adjustment ....................................... 30
3-3-4. Sub Bright Adjustment ................................... 30
3-4.
Geometry Adjustment ................................................ 30
3-4-1. General Setting ............................................... 30
3-4-2. Pal 50Hz Normal Mode .................................. 31
4. DIAGRAMS
4-1.
Block Diagram ........................................................... 32
4-2.
Circuit Boards Location ............................................ 33
4-3.
Schematic Diagram Information ............................... 33
4-3-1. A Board — (Block 001) .................................. 34
4-3-2. A Board — (Block 002) .................................. 36
4-3-3. A Board — (Block 003) .................................. 38
4-3-4. A Board — (Block 004) .................................. 40
4-3-5. A Board — (Block 005) .................................. 42
4-3-6. A Board — (Block 006) .................................. 44
4-3-7. A Board — (Block 007) .................................. 46
4-3-8. C Board Schematic Diagram .......................... 47
4-3-9. H1 Board Schematic Diagram ........................ 48
4-4.
Voltage Measurement and Waveforms ...................... 49
4-5.
Printed Wiring Boards ............................................... 52
4-6.
Semiconductors .......................................................... 55
5. EXPLODED VIEWS
5-1.
Chassis ....................................................................... 57
5-2.
3D Box Speaker ......................................................... 57
6. ELECTRICAL PARTS LIST ............................................ 59
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.
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.
Section
Title
Page
Section
Title
Page
– 3 –
KV-AW21M50/M81/P50
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.
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.
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)
V-Protect (OVP)
IK (AKB)
Power supply
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
2:0
or
2:1 ~ 255
4:0
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)
• +13V is not supplied.
(A board)
• IC804 is faulty. (A board)
• Video OUT (IC751) is
faulty. (C board)
• IC001 is faulty. (A board)
• Screen (G2) is improperly
adjusted.
• IC604 faulty.
• IC602 faulty.
Detected
Symptoms
• Power does not turn on.
• No power is supplied on
TV.
• AC Power supply is faulty.
• Power does not turn on.
• 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
detection reference pulse
output is small.
• No power supply to CRT
ANODE.
• No RASTER is generated.
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
Page of 84
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Download Sony KV-AW21M50 (serv.man3) Service Manual (Repair Manual)

Here you can view online or download Sony KV-AW21M50 (serv.man3) Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony KV-AW21M50 (serv.man3) TV. Information contained in Sony KV-AW21M50 (serv.man3) service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).