DOWNLOAD Sony KV-DR29M61 Service Manual ↓ Size: 19.7 MB | Pages: 127 in PDF or view online for FREE

Model
KV-DR29M61
Pages
127
Size
19.7 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kv-dr29m61.pdf
Date

Sony KV-DR29M61 Service Manual ▷ View online

– 5 –
KV-DR29M61/DR29M81
RM-991
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
2 times
+B overvoltage
3 times
V deflection stop
4 times
White balance failure
5 times
Horizontal Deflection Failure
6 times
* One flash count is not used for self-diagnostic.
STANDBY/SLEEP lamp
Lamp ON 0.3 sec.
Lamp OFF 3 sec.
Lamp OFF 0.3 sec.
2 times
3 times
4 times
5 times
6 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.
006 : 002
101 : 000
SELF DIAGNOSTIC
Numeral "2" means two faults have been detected.
– 6 –
KV-DR29M61/DR29M81
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".
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 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.
[+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 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.
[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.
[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.
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-DR29M61/DR29M81
RM-991
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)
2 Rear cover
not used for 
these models
not used for 
these models
1 Two screws
     (+BVTP 4 
× 16)
3 Two screws
     (+BVTP 4 
× 16)
2 Two screws
     (Washer Head) 
     (+P4x16)
not used for 
these models
1-5.
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.
2) Release the Lead Assy Speaker (left side)
3) 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
Use a non elastic and non
conductive string to tie the
main bracket to the MFB
(metal hook on CRT)
Place the Terminal 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.
2) The TV on the TV Stand
without Rear Cover is
unstable. As such be
careful not to push the TV
foward or backward
– 8 –
KV-DR29M61/DR29M81
RM-991
1-7.
B3 AND D5 BOARDS REMOVAL
1-8.
F1 BOARD REMOVAL
1-9. BC1 AND V2 BOARDS REMOVAL
1-10. H1 AND H2 BOARDS REMOVAL
1-11. A AND D BOARDS REMOVAL
2 D5 Board
4 B3 Board
3 Two clips
1 Two clips
2 BC1 Board
4 V2 Board
P Board 
(not used for 
these models)
1 One clip
3 Two clips
3 Three hooks
1 Five hooks
4 Cover, H
2 H1 Board
5 H2 Board
5 One screw
     (3 
× 12)(+) BVTP
5 One screw
     (3 
× 12)(+) BVTP
2 Three screws
     (3 
× 12)(+) BVTP
3 Four hooks
1 Five connectors
6 Four hooks
7 D Board
4 A Board
Note: Access to the B3 board is possible after removal
of the shiledcase. Remove the shiledcase by
removing 2 screws +BVTP 3x16
1-6.
TERMINAL BRACKET REMOVAL
2 Two screws
     (+BVTP 3 
× 12)
3 One screw
    (+BVTP 3 
× 12)
3 One screw
     (+BVTP 3 
× 12)
1 One screw
     (+BVTP 4 
× 16)
5 Terminal bracket
4 Two hooks
1 Two hooks
2 F1 Board
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