KV-AR21M83 — Sony TV Service Manual (repair manual)

Model
KV-AR21M83
Pages
97
Size
5.65 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kv-ar21m83.pdf
Date

View Sony KV-AR21M83 Service Manual online

RM-W101
MODEL
COMMANDER DEST. CHASSIS NO.
CHASSIS
TRINITRON 
®
 
COLOR TV
SERVICE MANUAL
BX1S
MODEL
COMMANDER   DEST.
CHASSIS NO.
KV-AR21M83
RM-W101 India
SCC-V06C-A
– 2 –
KV-AR21M83
   RM-W101
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. Terminal Bracket Removal ....................................... 6
1-6. A Board Removal ...................................................... 6
1-7. Picture Tube Removal ............................................... 7
2. SET-UP ADJUSTMENTS
2-1. Beam Landing ........................................................... 8
2-2. Convergence .............................................................. 9
2-3. Focus Adjustment .................................................... 11
2-4. G2 (SCREEN) Adjustments ................................... 11
2-5 White Balance Adjustment ..................................... 11
2-6 Sub Bright Adjustment ........................................... 11
3. CIRCUIT ADJUSTMENTS
3-1. Adjustment With Commander ................................ 12
3-2. Adjustment Method ................................................ 13
3-3. Picture Quality Adjustments ................................... 26
3-4. Deflection Adjustment ............................................ 26
3-5. Drive Adjustment .................................................... 27
3-6. Picture Distortion Adjustment ................................ 28
Section
Title
Page
Section
Title
Page
4. DIAGRAMS
4-1. Block Diagram ........................................................ 29
4-2. Circuit Boards Location .......................................... 30
4-3. Schematic Diagram Information ............................ 30
4-3-1. CV Board Schematic Diagram ................... 31
4-3-2. A Board — Processor (Block A) ............... 32
4-3-3. A Board — Audio (Block B) ..................... 34
4-3-4. A Board — Power Supply (Block C) ........ 36
4-3-5. A Board — Deflection (Block D) .............. 38
4-3-6. A Board — Tuner (Block E) ...................... 40
4-3-7. A Board — Jack (Block F) ........................ 42
4-4. Voltage Measurement and Waveforms ................... 44
4-5. Printed Wiring Boards and Parts Location ............. 48
4-6. Semiconductors ....................................................... 51
5. EXPLODED VIEWS
5-1. Chassis ..................................................................... 53
6. ELECTRICAL PARTS LIST .................................... 54
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.
– 3 –
KV-AR21M83
   RM-W101
The units in this manual contain a self diagnostic function. If an error occurs, the STANDBY (1) indicator will
automatically begin to flash. A description of the self-diagnosis function is explained in the instruction manual. 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 occured if the screen displays a
"0".
*
If a +B overcurrent is detected, stoppage of the vertical deflection is detected simultaneously. The symptom that is
diagnosed first by the mirco controller is displayed on the screen.
** Refer to Screen (G2) Adjustment in this manual.
SELF DIAGNOSTIC FUNCTION
Diagnosis
Item
Description
Power does
not turn on
+B overcurrent
(OCP)*
V-Protect
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
Self-Diagnostic
display/
Diagnosis result
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. (CV board)
• +13V is not supplied.
(A board)
• IC804 is faulty. (A board)
• Video OUT (IC1545) is
faulty. (A 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 come 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.
– 4 –
KV-AR21M83
   RM-W101
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)
indicator from flashing.
4. SELF-DIAGNOSTIC SCREEN DISPLAY
For errors with symptoms such as "power sometimes shuts off" or "screen sometimes goes off" that cannot be
confirmed, it is possible to bring up past occurrences 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:
Display 
/ Channel 5 / Volume 
/ Power 
 / TV 
˘
Note that this differs from entering the service mode (volume [+]).
The following screen will be displayed indicating the error count.
Diagnostic Item
Flash Count*
+B overcurrent
2 times
V-Protect
4 times
IK (AKB)
5 times
Power Supply NG (+5V)
8 times
for Video processor
* One flash count is not used for self-diagnosis.
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 (1) indicator
Page of 97
Display

Download Sony KV-AR21M83 Service Manual (Repair Manual)

Here you can view online or download Sony KV-AR21M83 Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony KV-AR21M83 TV. Information contained in Sony KV-AR21M83 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).