KV-DA32M36 - Sony TV Service Manual (repair manual)

Model
KV-DA32M36
Pages
127
Size
15.81 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kv-da32m36.pdf
Date

View Sony KV-DA32M36 Service Manual online

MODEL
COMMANDER DEST. CHASSIS NO.
CHASSIS
TRINITRON 
®
 
COLOR TV
SERVICE MANUAL
CX1
MODEL
COMMANDER   DEST.
CHASSIS NO.
KV-DA32M36
RM-W105 Oceania
SCC-V30A-A
RM-W105
– 2 –
KV-DA32M36
RM-W105
TABLE OF CONTENTS
SELF DIAGNOSTIC FUNCTION .............................. 3
1. DISASSEMBLY
1-1. Rear Cover Removal ................................................. 6
1-2. Speaker Removal ...................................................... 6
1-3. Chassis Assy Removal .............................................. 6
1-4. Service Position ........................................................ 6
1-5. Terminal Bracket Removal ....................................... 6
1-6. J Board Removal ....................................................... 6
1-7. BH1 BP, BC Boards Removal .................................. 7
1-8. F1 Board Removal .................................................... 7
1-9. WL Board Removal .................................................. 7
1-10. DL Board Removal ................................................... 7
1-11. H1 and H2 Boards Removal ..................................... 7
1-12. A and D Boards Removal ......................................... 7
1-13. Picture Tube Removal ............................................... 8
2. SERVICE JIG
2-1. Jigs Required for Servicing ...................................... 9
3. CIRCUIT BOARDS LOCATION ............................... 9
4. ADVANCE OPERATION
4-1. "RESET" Function .................................................. 10
5. SET-UP ADJUSTMENTS
5-1. Beam Landing ......................................................... 11
5-2. Convergence Adjustment ........................................ 12
5-3. Focus Adjustment .................................................... 14
5-4. Neck Assy Twist Adjustment .................................. 14
5-5. G2 (SCREEN) and White Balance Adjustment ..... 15
6. CIRCUIT ADJUSTMENTS
6-1. Adjustment With Commander ................................ 16
6-2. Adjustment Method ................................................ 17
6-3. Picture Quality Adjustments ................................... 61
6-4. Deflection Adjustments .......................................... 62
6-5. Picture Distortion Adjustment ................................ 63
Section
Title
Page
Section
Title
Page
7. DIAGRAMS
7-1. Block Diagram ........................................................ 64
7-2. Schematic Diagram Information ............................ 65
7-2-1. A Board – (Block 001) ................................. 66
7-2-2. A Board – (Block 002) ................................. 68
7-2-3. A Board – (Block 003) ................................. 70
7-2-4. A Board – (Block 004) ................................. 72
7-2-5. BC Board Schematic Diagram .................... 73
7-2-6. BH1 Board – (Block 001) ............................ 75
7-2-7. BH1 Board – (Block 002) ............................ 77
7-2-8. BP Board Schematic Diagram ..................... 79
7-2-9. C Board Schematic Diagram ....................... 81
7-2-10. D Board – (Block 001) .............................. 83
7-2-11. D Board – (Block 002) .............................. 85
7-2-12. DL Board Schematic Diagram .................. 86
7-2-13. F1 and H2 Boards Schematic Diagrams .... 88
7-2-14. H1 Board Schematic Diagram ................... 89
7-2-15. VM Board– (Block 001) ............................ 91
7-2-16. VM Board– (Block 002) ............................ 93
7-2-17. J Board Schematic Diagram ...................... 94
7-2-18. WL Board Schematic Diagram .................. 95
7-3. Voltage Measurement and Waveform ..................... 96
7-4. Printed Wiring Boards .......................................... 109
7-5. Semiconductors ..................................................... 121
8. EXPLODED VIEWS
8-1. Picture Tube and Speaker Bracket ........................ 123
8-2. Chassis ................................................................... 124
9. ELECTRICAL PARTS LIST .................................. 125
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-DA32M36
RM-W105
The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY/TIMER lamp will
automatically begin to flash.
The number of times the lamp 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 error occurs, the STANDBY/TIMER lamp will flash a 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.
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)
• Horizontal
deflection failure
• +B overvoltage
(OVP)
• Vertical deflection
failure
• White balance
failure (no
PICTURE)
• 5V/9V failure
• Micro reset
No. of times
STANDBY/TIMER
lamp flashes
Does not light
2 times
3 times
4 times
5 times
8 times
Self-diagnostic
display/Diagnostic
result
002:000 or
002:001~255
003:000 or
003:001~255
004:000 or
004:001~255
005:000 or
005:001~255
008:000 or
008:001~225
101:00 or
101:001~225
Probable
Cause
Location
• Power cord is not plugged
in.
• Fuse is burned out F1601
(F1 Board)
• H.OUT Q6802 is shorted.
• C6831 is open circuit.
PS6606 open, PS6605
open. (D board)
• PH6602 faulty.
D6644 faulty, R6651 open.
• 10.5V is not supplied.
(D board)
• V.OUT IC6800 faulty
D6816 faulty
D6817 faulty
D6824 faulty
R6852 open
R6851 open (D board)
• G2 is improperly adjusted.
• CRT problem.
• Video OUT IC9001, 9002,
9003 are faulty. (C board)
• IC4301 CXA2170Q (A
board) are faulty.
• 5V regulator (IC2601) faulty.
• 9V regulator (IC2600) faulty.
• CRT Discharge (C Board)
• Static discharge
• External noise
Detected
Symptoms
• Power does not turn on.
• No power is supplied to the
TV.
• AC power supply is faulty.
• Power does not turn on.
• Load on power line is
shorted.
• H pulse output is too high.
• Power does not come on.
• Vertical deflection pulse is
stopped.
• Vertical size is too small.
• Vertical deflection stopped.
• No raster is generated.
• CRT cathode current
detection reference pulse
output is small.
• TV Blank
• No Raster
• Power is shut down shortly,
after this return back to
normal.
• Detect Micro latch up.
SELF DIAGNOSTIC FUNCTION
– 4 –
KV-DA32M36
RM-W105
2. DISPLAY OF STANDBY/TIMER LIGHT FLASH COUNT
3. STOPPING THE STANDBY/TIMER FLASH
Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY/TIMER lamp
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 occurances of failure for confirmation on the screen:
[To Bring Up Screen Test]
In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below:
[Screen display] / channel 
5
 
/ Sound volume [-] / Power ON
˘
Note that this differs from entering the service mode (mode volume [+]).
Self-Diagnosis screen display
Diagnostic Item
Flash Count*
+B overcurrent and
2 times
Horizontal Deflection Failure
+B overvoltage
3 times
V deflection stop
4 times
White balance failure
5 times
5V/9V failure
8 times
* One flash count is not used for self-diagnostic.
Lamp ON 0.3 sec.
Lamp OFF 3 sec.
Lamp OFF 0.3 sec.
2 times
3 times
4 times
5 times
8 times
002 : 000
003 : 000
004 : 000
005 : 001
Numeral "0" means that no fault has been detected.
Numeral "1" means a fault has been detected.
008 : 002
101 : 000
SELF DIAGNOSTIC
Numeral "2" means two faults have been detected.
STANDBY (1) indicator
– 5 –
KV-DA32M36
RM-W105
5. HANDLING OF SELF-DIAGNOSTIC SCREEN DISPLAY
Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic
screen during repairs. When you have completed the repairs, clear the result display to "0".
Unless the result display is cleared to "0", the self-diagnostic function will not be able to detect subsequent faults after
completion of the repairs.
[Clearing the result display]
To clear the result display to "0", press buttons on the remote commander sequentially as shown below when the
diagnostic screen is being displayed.
Channel 8
/ 0
[Quitting Self-diagnostic screen]
To quit the entire self-diagnostic screen, turn off the power switch on the remote commander or the main unit.
6. SELF-DIAGNOSTIC CIRCUIT
[+B overcurrent OCP ]
Occurs when an overcurrent on the +B(135) line is detected by Q6804.
[High voltage protector of Horizontal Deflection]
If Q6804 go to ON, the voltage to the pin57 of IC4301 go to "HIGH".
The unit will automatically turn off.
Occurs when an overvoltage of horizontal pulse is detected by D6809.
If the voltage of anode D6809, Q6814 and D6808 goes to High, the
voltage to pin57 of IC4301 go to "HIGH".
The unit will automatically turn off.
[+B overvoltage OVP ]
Occurs when an overvoltage on the +B(135) line is detected by D6635
and Q6611. If Q6611 go to ON, the voltage to pin6 of IC001 go to
"HIGH". The unit will automatically turn off.
[Vertical deflection failure]
Occurs when an absence of the vertical deflection pulse is detected by
Q6808 and R6910. Shut down the power supply.
[White balance failure]
If the RGB levels do not balance or become low level within 5 seconds.
This error will be detected by IC4301.
TV will stay on, but there will be no picture.
[5V/9V failure]
Occurs when 5V/9V is not supplied to Mcon (IC001).
No raster will be detected or no picture.
IC4301
RGB JUNGLE
CXA2170AQ
OVP
FROM
CRT (IK)
[V] Q6808, R6910
IC001
SYSTEM
SDA
SDA
9V
5V
IC004
MEMORY
IK_IN
H PROT
RED LED
5
24
57
7
6
V PROT  
56
[OCP] Q6804, D6821
[H] D6808, D6809
84
14,47,
82
– 6 –
KV-DA32M36
RM-W105
1
 Five screws
    (+BVTP 3 
× 12)
2
 J board
1-6.
J BOARD REMOVAL
1-5.
TERMINAL BRACKET REMOVAL
SECTION 1
DISASSEMBLY
1-1.
REAR COVER REMOVAL
1-2.
SPEAKER REMOVAL
1-3.
CHASSIS ASSY REMOVAL
1-4.
SERVICE POSITION
1
 Fourteen screws
     (+BVTP 4 
× 16
     Type2 IT-3)
2
 Rear cover
1
 Two screws
     (+BVTP 4 
× 16
       Type2 IT-3)
2
 Two screws
     (Washer Head) 
     (+P4x16)
3
 Two screws
     (+BVTP 4 
× 16
     Type2 IT-3)
2
 One screw
    (+BVTP 3 
× 12
    Type2 IT-3)
2
 One screw
    (+BVTP 3 
× 12
    Type2 IT-3)
1
 One screw
     (+BVTP 4 
× 16 
Type2 IT-3)
4
 Two hooks
5
 Terminal bracket
– 7 –
KV-DA32M36
RM-W105
5
 One screw
     (Washer Head) 
     (3 
× 12)(+)(BVTAP)
2
 Five screws
    (3 
× 12)(+) BVTAP
3
 Two hooks
1
 Five connectors
6
 Five hooks
4
 D Board
7
 A Board
1-7.
BH1, BP AND BC BOARDS REMOVAL
1-8.
F1 BOARD REMOVAL
1-9.
WL BOARD REMOVAL
1-10. DL BOARD REMOVAL
1-11. H1 AND H2 BOARDS REMOVAL
1-12. A AND D BOARDS REMOVAL
Note: Access to the BH1 board is possible after
removal of the shiledcase. Remove the
shiledcase by removing 2 screws +BVTP 3x12
Type2 IT-3
4
 BP Board
2
 Two clips
1
 Two clips
3
 Two clips
6
 BC Board
5
 BH1 Board
2
 F1 Board
1
 Three hooks
2
 WL Board
1
 Three clip
3
 Three screws
    (+BVTP 3 
× 12 Type2 IT-3)
2
 DL Board
1
 Three clip
3
 Four hooks
1
 Five hooks
2
 H1 Board
4
 H2 Board
5
 One screw
     (Washer Head) 
     (3 
× 12)(+)(BVTAP)
– 8 –
KV-DA32M36
RM-W105
• REMOVAL OF ANODE-CAP
Note:
• After removing the anode, short circuit the anode of the picture tube and the anode cap to the metal chassis, CRT
shield or carbon paint on the CRT.
• REMOVING PROCEDURES
Turn up one side of the rubber cap in the direction
indicated by the arrow a.
Using a thumb pull up the rubber cap firmly in the direc-
tion indicated by the arrow b.
When one side of the rubber cap is separated from the
anode button,  the anode-cap can be removed by
turning up the rubber cap and pulling it up in the
direction of the arrow 
c.
• HOW TO HANDLE AN ANODE-CAP
Do not damage the surface of anode-caps with
sharp shaped objects.
Do not press the rubber too hard so as not to
damage the inside of anode-cap.
A metal fitting called the shatter-hook terminal is
built into the rubber.
Do not turn the foot of rubber over too hard.
The shatter-hook terminal will stick out or damage
the rubber.
4
 Anode Cap Removal
7
 Degaussing Coil
6
 Band, DGC Removal
qa
 Loosen the Neck Assembly 
fixing screw and remove Neck
Assy and VM board
qs
 Loosen the Deflection Yoke
fixing screw and remove
0
 C Board Removal
8
 Spring Tension(2) 
Removal
5
 Holder, DGC
Removal (x2)
9
 Earth Coating Assy
qd
 Supports, CRT
Removal (x2)
qf
 ScrewTappin 7+ 
    Crown Washer (x4)
b
b
a
a
c
anode button
1-13. PICTURE TUBE  REMOVAL
Note:
The picture tube is upside down for Oceania model and the position to the anode cap and tension springs are
changed accordingly.
Please make sure the TV set is not in standing position before removing necessary CRT support located on bottom
right and left.
1) Remove the Rear Cover.
2) Unplug all interconnecting leads from the Deflection yoke, Neck assy, Degaussing Coil and CRT grounding strap.
Remove Chassis Assy.
3) Place the TV set with the CRT face down on a cushion jig.
– 9 –
KV-DA32M36
RM-W105
SECTION 2
SERVICE JIG
SECTION 3
CIRCUIT BOARDS LOCATION
2-1. JIGS REQUIRED FOR SERVICING
DESCRIPTION
QUANTITY
PART NO.                   REMARK
TOOL(30P),SERVICE
1
J2509400E                 For A to BP board extension
TOOL(7P),(8P),SERVICE
1
J2509400D                 For A to BC board extension
TOOL(50P-A),SERVICE
1
3-702-765-01              For A to BH1 board extension
WL Board
BC Board
J Board
A Board
BP Board
BH1 Board
D Board
F1 Board
VM Board
H2 Board
H1 Board
C Board
DL Board
SAMPLE
– 10 –
KV-DA32M36
RM-W105
SECTION 4
ADVANCE OPERATION
4-1. "RESET" FUNCTION
1. Purpose
If a customer faces some setting problem that cannot be solved, using the "RESET" function some items
will be reset to its original setting (shipping condition)
2. How to Operate
There are 2 ways to access to the "RESET" Function:-
a) By pressing "RESET" button on the Remote Commander.
b) By pressing "MENU" button on the Front Key Input and hold it down for 5 seconds.
(DAXXMXX doesn't have this function anymore.)
(DAXXNXX, DAXXKXX still have it.)
3. Subsequent of Operation
Sequential to the resetting operation, TV set would shut down once and automatically turn on again. The
power-off duration is expected to be about 500msec. Initial Setup Menu is displayed.
As a result, some items will be reset to an initial condition (shipment condition) wheareas some other
remains at the last selection by user.
Items that remains at the last selection by user
Reset Items
Program No., PICTURE POSITION (included PICTURE
ROTATION and PICTURE V-POSITION), OSD Language, Fine
tuning,TV System, Skip, Program label, Program sorting, Video
label, Program block (NTSC model)
Video input
RF user last setting
Volume
25
DRC-MF
DRC1250
Picture mode
DYNAMIC
3D Intelligent Picture
ON
Sound mode
DYNAMIC
Intelligent volume
OFF
Surround
OFF
Wide mode
4.3
Auto wide
ON
Twin
OFF
Program Index
OFF
* Program Block
Reset particular channel to
unblock
WEGA Theatre Setup
Direct Input
Video 1
Speaker
Main
Game mode
OFF (Video) *Not available in RF
mode
Color System
Reset to Auto at the CH, others
keep user setting
Eco mode
OFF
Wide mode
Wide zoom
Auto wide
ON
4.3 Default
Wide zoom
V Center
00
V Size
00
Picture mode
RF user last setting
Mute
OFF
OSD Display status
OFF
Main volume
25
Center-in volume
25
(Remote button)
Center speaker
Main or center in (No menu display)
(UNDER WEGA
(Selected only when WTM turns on)
THEATRE SETUP MENU)
Initial setup menu
Reactivate/ON
Twin size
Center
*= Reset only during watching time
- For Multi model only
- Not reset for NTSC model
Category
Default
Category
Default

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