SONY KV-AR252M61 SERVICE MANUAL
http://servis-manual.com/
KV-AR252M50/AR252M61/AR252M81
RM-W102
2. DISPLAY OF STANDBY/(1) indicator FLASH
COUNT
Lamp ON 300ms
Lamp OFF 300ms
Lamp OFF 3 sec
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) lamp
from flashing.
Diagnosis Item Flash Count*
+B overcurrent 2 times
I-Prot 4 times
IK (AKB) 5 times
HV Protect 8 times
* One flash count is not used for self-diagnosis.
FLASH RED n Please refer diagnosis item.
FLASH GREEN n OK
STANDBY indicator
4. SELF-DIAGNOSTIC SCREEN DISPLAY
For errors with symptoms such as "power sometimes shuts off" or "screen sometimes goes out" that cannot be confirmed,
it is possible to bring up past occurrence 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 [+]).
Self-Diagnostic screen display
SELF DIAGNOSTIC
2 : 0
3 : N/A
4 : 0
5 : 1
8 : 0
101 : N/A
Numeral "0" means that no fault was detected.
Numeral "1" means the number of a fault occurrence (1~255).
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KV-AR252M50/AR252M61/AR252M81
5. HANDLING OF SELF-DIAGNOSTIC SCREEN DISPLAY
Since the diagnosis 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-diagnosis 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 when the self-diagnostic screen is
displayed, as shown below:
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-DIAGNOSIS CIRCUIT
RM-W102
FROM
C BOARD
IC751 PIN 5
A BOARD
FROM
Q511
COLLECTOR
A BOARD
IC001
Y/CHROMA JUNGLE
IK
97
EHTO
A BOARD
IC503
V.OUT
F.B-PLS
A BOARD
IC001
SYSTEM
SDA1
3 11645
V.GUARD
RED LED
20
7
DISPLAY
A BOARD
IC003
MEMORY
5
SDA
[+B overcurrent OCP ] Occurs when an overcurrent on the +B (135V) line is detected by pin 97 of IC001
(A Board). If the voltage of pin 97 of IC001 (A Board) is less than 1V when V.SYNC is
more than HV, the unit will automatically go to standby.
[I-Port] Occurs when an absence of the vertical deflection pulse is detected by pin 116 of
IC001 (A Board).
[IK $AKB%] If the RGB levels* do not balance within 15 sec after the power is turned on, this error
will be detected by IC001 (A Board). TV will stay on, and indicalor will start to Blink 5
times.
[HV Protect] Occurs when IC001 internal HV protect detects an abnormal. H-Pulse (frequency) due
to unproper power supply to IC001. TV cuts off high voltage power of anode CRT. No
picture will be detected eg IC607, IC604 go faulty.
* (Refers to the RGB levels of the AKB detection Ref pulse that detects 1K)
– 5 –
KV-AR252M50/AR252M61/AR252M81
VIF
SAW
SIF
SAW
MAIN
Power
Supply
Stdby
Power
FSS TUNER
G/Y
B/PB
R/PR
L
R
24.576MHz
DVD in
Rear AV in
Front AV in
Mon out
Mon
out
AV
1,2
in
AV
1
in
RGB/
DVD
in
AC in ~
110-220V
CISPR/
PFC
Relay
LOW B
Stdy 3.3
AUDIO VCC
Hout
FBT
L
2ch
3ch
For India only
Audio Amp
ATT
NVM
Pin out
H-drive
H-out
V-out
DF/DQP
VM
RGB Amp
Rot Amp
LCC Amp
feedback
5W
R
5W
6+6
+12
3D Woofer
L,R
H
P
EW, Hd
L,R
V+, V -
PWM
RGB
SIRCS
Key
buttons
PLL
I/O Port
I/O Port
VIF & SIF
POWER
Color
Decoder
YUV
Processor
Jungle
RGB
A
D
C
D
A
C
Stereo,
DSP
Micro
Text
CC & V-chip
L
E
D
+B
RM-W102
4-1. BLOCK DIAGRAM
SECTION 4
DIAGRAMS
– 34 –
KV-AR252M50/AR252M61/AR252M81
RM-W102
4-3-1. J1 and H2 Boards Schematic Diagrams
12345 6 7
A
R2410
XX
VR
B
C
R-Y
B-Y
Y
L
R
J2410
5P
PHONO JACK
VB
VG
L
R
R2411
XX
R2420
XX
R2412
XX
R2414
XX
R2417
XX
D
JW2421
5.0MM
R2421
XX
JW2419
5MM
JW2420
5MM
C2413
XX
B
R2419
XX
C2414
XX
B
JW2410
5.0MM
JW2412
5MM
JW2415
5MM
R2418
C2410
XX
C2411
D2411
XX
XX
PROTECTION
JW2411
5MM
XX
JW2418
5MM
D2410
XX
PROTECTION
C2412
D2412
XX
XX
PROTECTION
R2415
XX
C2400
XX
JW2400
5MM
C2401
XX
JW2401
5MM
PROTECTION
D2414
XX
PROTECTION
D2415
XX
CN2410
8P
WHT
TO B BOARD
CN1421
1
DVD Y
2
GND
3
DVD BY
4
GND
5
DVD RY
6
GND
7
DVD L
8
DVD R
E
F
G
H
I
J
CN3603
5P
BLK
TO H1 BOARD
CN3907
H2
(FRONT PANEL)
D3906
SPB-25MVWF
WAKE INDICATOR
D3909
1SS133T-77
D3910
RD5.6ESB2
VCC
GND
C3912
470p
RPM7240-H5
B
SIRCS RECEIVER
J1
(DVD TERMINAL)
B-BX1l12155-...-J1.-AR252
CN3602
2P
TO A BOARD
(POWER SUPPLY/
DEFLECTION)
CN600
LED G
LED R
123
G
OUT
IC3901
GND
R
SIRCS IN
3.3V SEN
4
5
C3915
470p
B
AC OUT
AC OUT
2
1
JW3601
7.5MM
JW3602
7.5MM
D3911
RD5.6ESB2
S3601
CN3601
2P
TO F BOARD
CN4602
AC IN
AC IN
2
1
1
2
XX
FH001
XX
FH002
C3916
XX
F3601
XX
B-BX1l12155-...-H2..-AR252
CN3604
XX
1
– 36 –
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