Sony KDL-32R435A / KDL-40R485A / KDL-46R485A / KLV-24R402A / KLV-24R422A / KLV-32R402A / KLV-32R407A / KLV-32R422A / KLV-40R452A / KLV-40R457A / KLV-40R472A / KLV-46R452A / KLV-46R472A Service Manual ▷ View online
Safety Notes
ITC2
CHASSIS
R402/ R407/ R422/ R435/ R452/ R457/ R472/ R488
1-5. How to Find a Good Earth Ground
1) A cold-water pipe is a guaranteed earth ground; the cover-plate retaining
screw on most AC outlet boxes is also at earth ground.
2) If the retaining screw is to be used as your earth ground verify that it is at
screw on most AC outlet boxes is also at earth ground.
2) If the retaining screw is to be used as your earth ground verify that it is at
1-7. Handling the FLEXIBLE FLAT CABLE (FFC)
When you insert / pull out FFC, please grasp a reinforcement board and main body of
FFC.
2) If the retaining screw is to be used as your earth ground, verify that it is at
ground by measuring the resistance between it and a cold-water pipe with an
ohmmeter. The reading should be zero ohms.
3) If a cold-water pipe is not accessible, connect a 60- to 100-watt trouble-
light (not a neon lamp) between the hot side of the receptacle and the
retaining screw Try both slots if necessary to locate the hot side on the line;
ground by measuring the resistance between it and a cold-water pipe with an
ohmmeter. The reading should be zero ohms.
3) If a cold-water pipe is not accessible, connect a 60- to 100-watt trouble-
light (not a neon lamp) between the hot side of the receptacle and the
retaining screw Try both slots if necessary to locate the hot side on the line;
retaining screw. Try both slots, if necessary, to locate the hot side on the line;
the lamp should light at normal brilliance if the screw is at ground potential
(see Figure 3).
the lamp should light at normal brilliance if the screw is at ground potential
(see Figure 3).
1-6. Lead Free Information
Figure 3. Checking for earth ground.
The circuit boards used in these models have been processed using Lead
Free Solder. The boards are identified by the LF logo located close to the
board designation.
Free Solder. The boards are identified by the LF logo located close to the
board designation.
Main Board
Main Board
Figure 4: LF Logo
Figure 5: LF logo on circuit board
Th
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ti
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7
The servicing of these boards requires special precautions. It is strongly
recommended to use Lead Free Solder material in order to guarantee optimal
quality of new solder joints.
recommended to use Lead Free Solder material in order to guarantee optimal
quality of new solder joints.
< Insertion>
<Pull out>
SECTION 2
SELF DIAGNOSTIC FUNCTION
2-1 Overview of Control Buttons
Self Diagnostic Function
2-3 LED Pattern
2-1. Overview of Control Buttons
When safety shutdown occurs, Standby LED display reports the cause by using the lightning
patterns as indicated below
patterns as indicated below
.
2 3. LED Pattern
3.0sec
3.0sec
0.5sec
0.
5sec
Example: The figure above shows LED display when SHUTDOWN is caused by Audio
Error. It repeats flashing for a specified number of times in 0.5sec/cycle and has a 3 seconds
interval of lighting off. Please note that a 3 seconds interval of lighting off is fixed regardless of abnormal state types.
interval of lighting off. Please note that a 3 seconds interval of lighting off is fixed regardless of abnormal state types.
2-4. Standby LED Error Display
The Number of
Standby LED
Standby LED
Detection Items
Board Error Item
2-2. LED Display Control
Status
LED Colour
Remarks
Power Off
( AC Off and *1)
( AC Off and *1)
OFF
*1 power switch off (by
touch button)
touch button)
Amber
=
Red
+
Green
Standby LED
(RED blinking)
(RED blinking)
2
Main Power Error
AC adapter Error
3
Audio Error
BB board Error
Power On
Green
Standby
( by remote control off only )
( by remote control off only )
Red
Picture Off
Green
4
Panel Power Error
BB board Error
5
Panel I2C COMM Error
BB or Source board Error
6
Backlight Error
BB board Error
Set "Sleep Timer"
Amber
Set "On Timer"
( Power On )
( Power On )
Amber
Set "On Timer"
( Standby )
( Standby )
Amber
(
y )
Picture Frame
Amber
Failure
Red Blinking
The number of LED blinking
indicates cause of failure.
indicates cause of failure.
Error of panel ID
Amber/Green
Blinking
Blinking:0.5sec Amber/
0 5sec Green
0 5sec Green
8
Blinking
0.5sec Green
Software Updating
Amber Blinking
Blinking: 1sec On / 1sec Off
Self Diagnostic Function
R f
Blinking
No Picture
No Sound
2-5. Triage Chart
Reference
2
3
4
5
6
Tuner USB Video Component HDMI
MHL
Main
Speaker
HP
Video
Component
Tuner
HDMI
USB
BB Board
Light Source
Board
Board
Open Cell
AC Adaptor
Speaker Unit
LS Harness
Main
Harness
Main
Harness
C C
FFC Cable
Note: Details refer to Troubleshooting Section.
Secondary possible defective part
Most likely defective part
9
ITC2
CHASSIS
R402/ R407/ R422/ R435/ R452/ R457/ R472/ R488
SECTION 3
TROUBLESHOOTING
3-1. Troubleshooting Flow
START
Does the Power Led
stay on when the
Open Detail
- No Power
TV is switched on ?
Is the Standby Led
No Power
Open Detail
blink ?
- Standby LED Blink
Green & Amber
blink?
- Panel ID Error
- Panel Not Supported
Is the Picture and
Sound OK ?
Open Detail
- Picture/Audio/Video
END
10
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