Sony KV-DR34M97 Service Manual ▷ View online
– 6 –
KV-DR34M97
RM-991
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”.
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.
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.
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.
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 ªOCPº]
Occurs when an overcurrent on the +B(135) line is detected by Q6610
and Q6609.
If Q6610 and Q6609 go to ON, the voltage to the pin3 of IC001 go to UP.
The unit will automatically turn off.
and Q6609.
If Q6610 and Q6609 go to ON, the voltage to the pin3 of IC001 go to UP.
The unit will automatically turn off.
[+B overvoltage ªOVPº]
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 UP. The
unit will automatically turn off.
and Q6611. If Q6611 go to ON, the voltage to pin6 of IC001 go to UP. The
unit will automatically turn off.
[Vertical deflection failure]
Occurs when an absence of the vertical deflection pulse is detected by
Q6819 and R6832. Shut down the power supply.
Q6819 and R6832. 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.
This error will be detected by IC4301.
TV will stay on, but there will be no picture.
[High voltage protector of Horizontal Deflection]
Occurs when an overvoltage of horizontal pulse is detected by D6809 and
IC6801.
If the voltage of anode D6830, Q6800 and D6825 goes to High, the
voltage to pin34 of IC4301 go to UP. The unit will automatically turn off.
IC6801.
If the voltage of anode D6830, Q6800 and D6825 goes to High, the
voltage to pin34 of IC4301 go to UP. The unit will automatically turn off.
IC4301
RGB JUNGLE
CXA2150AQ
OVP OCP
FROM
CRT (IK)
[V] Q6819, R6832
IC001
SYSTEM
SDA
SDA
IC003
MEMORY
IKIN
H PROT
LED 1
5
58
34
54
3
6
V PROT
35
[H] D6825, D6830
– 7 –
KV-DR34M97
RM-991
1 Sixteen screws
(+BVTP 4
(+BVTP 4
× 16)
2 Rear cover
SECTION 1
DISASSEMBLY
1-1.
REAR COVER REMOVAL
1-2.
3D SPEAKER BOX REMOVAL
1-3.
SPEAKER REMOVAL
1-4.
CHASSIS ASSY REMOVAL
1-5.
DH BOARD REMOVAL
1 Two screws
(TP + TWH 4
(TP + TWH 4
× 25)
2 3D Speaker
box assy
1-6.
SERVICE POSITION
1 Two hooks
2 DH Board
1 Two screws
(+BVTP 4
(+BVTP 4
× 16)
2 Two screws
(Washer Head)
(+P4x16)
(Washer Head)
(+P4x16)
3 Two screws
(+BVTP 4
(+BVTP 4
× 16)
– 8 –
KV-DR34M97
RM-991
1-9.
B3 AND D5 BOARDS REMOVAL
1-10. F1 BOARD REMOVAL
1-11 . BC1 AND P BOARDS REMOVAL
Note: Access to the B3 board is possible after removal
of the shiledcase. Remove the shiledcase by
removing 2 screws +BVTP 3x16
removing 2 screws +BVTP 3x16
1-8.
TERMINAL BRACKET REMOVAL
2 Two screws
(+BVTP 3
(+BVTP 3
× 12)
3 One screw
(+BVTP 3
(+BVTP 3
× 12)
3 One screw
(+BVTP 3
(+BVTP 3
× 12)
1 One screw
(+BVTP 4
(+BVTP 4
× 16)
5 Terminal bracket
4 Two hooks
2 D5 Board
4 B3 Board
3 Two clips
1 Two clips
2 F1 Board
1 Two hooks
2 BC1 Board
4 V2 Board
(not used for this model)
6 P Board
1 One clip
3 Two clips
5 One clip
1-7.
SERVICE POSITION ON TV STAND
Note: 1) Remove the Rear Cover (refer 1-1)
- unscrew all 14 screws fixed on the Rear Cover. Hold
the top of the TV Cabinet; lift the Rear Cover slightly
upwards to release the Rear Cover foot from the TV
Stand and slide it backwards from the TV Cabinet.
upwards to release the Rear Cover foot from the TV
Stand and slide it backwards from the TV Cabinet.
2) Remove the 3D Speaker Box (refer 1-2)
3) Release the Lead Assy Speaker (left side)
4) Lift up the chassis and place it in the Service
3) Release the Lead Assy Speaker (left side)
4) Lift up the chassis and place it in the Service
Position as shown:-
Place the front of the main
bracket on to the foot of the
TV Cabinet
bracket on to the foot of the
TV Cabinet
Use a non elastic and non
conductive string to tie the
main bracket to the woofer
bracket
conductive string to tie the
main bracket to the woofer
bracket
Place the Terminal
Bracket edge into the hole
on the TV Stand foot
Bracket edge into the hole
on the TV Stand foot
Caution: 1) In Service Position, make
sure all the TV connections
are connected correctly
before turning on the TV
set.
are connected correctly
before turning on the TV
set.
2) The TV on the TV Stand
without Rear Cover is
unstable. As such be
careful not to push the TV
foward or backward
unstable. As such be
careful not to push the TV
foward or backward
– 9 –
KV-DR34M97
RM-991
$ Band, DGC(1) Removal (only top-side)
5 Anode Cap Removal
) Earth Coating Assy(2) Removal
7 Loosen the Neck Assembly
fixing screw and remove
9 Loosen the Deflection Yoke
fixing screw and remove
6 C Board Removal
! Chassis Assy Removal
8 VM Board Removal
( Spring Tension(2)
Removal
Removal
# Supports, CRT(2) Removal
& DGC(2) Removal
% Holder, DGC(2) Removal
~ Nut, Locking (4)
+ Nut special CRT (4)
" Bracket Woofer(2) Removal
1-12. H1 AND H2 BOARDS REMOVAL
1-13. A AND D BOARDS REMOVAL
1-14. 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) Place the TV set with the CRT face down on a cushion (jig).
2) Removal the Rear Cover.
3) Removal the 3D Box.
4) Unplug all interconnecting leads from the Deflection Yoke, Neck Assy, Degaussing Coils and CRT grounding strap.
2) Removal the Rear Cover.
3) Removal the 3D Box.
4) Unplug all interconnecting leads from the Deflection Yoke, Neck Assy, Degaussing Coils and CRT grounding strap.
5 One screw
(3
(3
× 12)(+)(BVTP)
2 Three screws
(3
(3
× 12)(+) BVTP
3 Four hooks
5 One screw
(3
(3
× 12)(+)(BVTP)
1 Five connectors
6 Four hooks
7 D Board
4 A Board
3 Three hooks
1 Five hooks
4 Cover, H
2 H1 Board
5 H2 Board
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