DOWNLOAD Sony KV-DA292M86 Service Manual ↓ Size: 17.27 MB | Pages: 127 in PDF or view online for FREE

Model
KV-DA292M86
Pages
127
Size
17.27 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kv-da292m86.pdf
Date

Sony KV-DA292M86 Service Manual ▷ View online

KV-DA292M86
RM-W105
– 4 –
4. SELF DIAGNOSTIC SCREEN DISPLAY
5. HANDLING SELF DIAGNOSTIC SCREEN DISPLAY
6. SELF-DIAGNOSTIC CIRCUIT
[+B overcurrent OCP ]
Occurs when an overcurrent on the +B(135) line is detected by Q6804.
If Q6804 go to ON, the voltage to the pin57 of IC4301 go to "HIGH".
The unit will automatically turn off.
[High voltage protector of Horizontal Deflection]
Occurs when an overvoltage of horizontal pulse is detected by D6809.
If the voltage of anode D6809 and D6843 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
Q6606. If Q6606 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 Micon (IC001).
No raster will be detected or no picture.
5
8
No.
Description
Method
1.
Display self diagnostic screen
[Display] t [Channel    ] t [Volume    ] t [Power / TV]
Note: The above must be performed while TV is on standby mode.
2.
Stop standby flash
i) Turn off power switch on main.
ii) Unplug power cord from the outlet.
3.
Clear fault result
In self diagnostic screen, press 
[Channel    ] t 
-
Note: Diagnostic results display on screen is not automatically cleared. Therefore,
clear result after completion of repair.
4.
Quit self diagnostic screen
Turn off power switch of remote commander or main unit.
2 OCP:
0
3 OVP:
0
4 VSTOP:
0
5 AKB:
0
8 SOP:
0
9 SOPBT:
0
01 WDT:
N/A
Numeral "0" means that no fault has been detected.
Numeral "1" means a fault has been detected.
SELF DIAGNOSTIC
Numeral "2" means two faults have been detected.
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
KV-DA292M86
RM-W105
– 5 –
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
2 Rear cover   
1 Twelve screws
(BVTP 4 
× 16)
2
 Two screws
     (Washer Head)
     (+P4 
× 16)
1
 Two screws
     (BVTP 4 
× 16)
5 One Screw
     (+BVTP 3 
× 12)
6 Three Hooks
3 One screw
     (+BVTP 4 
× 16)
4 Five screws
     (+BVTP 3 
× 12)
2 Terminal Bracket
1 One screw
     (+BVTP 3 
× 12)
2
 J Board
1
 Five Screws
     (+BVTP 3 
× 12)
KV-DA292M86
RM-W105
– 6 –
1-7.
BP AND BC BOARD REMOVAL
1-8.
BH1 BOARD REMOVAL
1-9.
F1 BOARD REMOVAL
1-10. DL BOARD REMOVAL
2 Two clips
BH1 Board
1 F1 Board
2 Four Hooks
1 Three Hooks
DL Board
1-11. H1 AND H2 BOARDS REMOVAL
1-12. A AND D BOARDS REMOVAL
3 Five Hooks     
H1 Board
    
H2 Board
2 Four
     Hooks
2 Five screws
     (BVTAP 3 
× 12)
1 One screw
     (washer head)
     (+P 3 
× 12)
6 Five Hooks
4 A Board
5 D Board
3 Three
      Hooks
1
 BH1 Board
4
 BC Board
6
 BP Board
5
 Two 
Hooks
3
 Two Hooks
1
 Two Hooks
KV-DA292M86
RM-W105
– 7 –
• 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 direction
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.
1-13. PICTURE TUBE  REMOVAL
Note:
• Please make sure the TV set is not in standing position before removing necessary CRT support located on bottom right
and left.
• When removing the Nut Locking: first make sure to hold the Nut special CRT with a spanner while opening the Nut Locking
using a torque driver. Then proceed to remove the Nut special CRT using a torque driver.
1) Remove the Rear Cover.
2) Unplug all interconnecting leads from the Deflection Yoke, Neck Assy, Degaussing Coils and CRT grounding strap. Remove
Chassis Assy
3) Place the TV set with the CRT face down on a cushion (jig).
qa
 Earth Coating Assy
q;
 Degaussing Coil
4
 Anode Cap Removal
5
 C Board Removal
qs
 Spring Tension
(2) Removal
qd
 
Support, CRT Removal (x2)
9
 Holder, DGC
     Removal (x2)
qf
 Screw, Tapping 7 +
     Crown Washer (4)
7
 Loosen the Deflection Yoke
fixing screw and remove
8
 Band, DGC Removal
6
 Loosen the Neck Assembly
     fixing screw and remove 
Neck Assy & VM board Removal
a
a
b
b
c
 Anode Button
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