Sony KDL-55W950B / KDL-55W955B / KDL-55W957B / KDL-65W950B / KDL-65W955B Service Manual ▷ View online
RB2G
CHASSIS
W950B/ W955B/ W957B/ M25B
6
3) Measuring the voltage drop across a resistor by means of a VOM or battery
operated AC voltmeter. The 'limit' indication is 0.75V so analog meters must
have an accurate low voltage scale. The SIMPSON'S 250 and SANWA SH-
63TRD are examples of passive VOMs that are suitable. Nearly all battery
operated digital multimeter that have a 2 VAC range are suitable.
(see Figure 2.)
operated AC voltmeter. The 'limit' indication is 0.75V so analog meters must
have an accurate low voltage scale. The SIMPSON'S 250 and SANWA SH-
63TRD are examples of passive VOMs that are suitable. Nearly all battery
operated digital multimeter that have a 2 VAC range are suitable.
(see Figure 2.)
1-4. Safety Check-Out
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer:-
1) Check the area of your repair for unsoldered or poorly soldered
connections. Check the entire board surface for solder splashes and bridges.
2) Check the inter board wiring to ensure that no wires are pinched or
contact high-wattage resistors.
3)Check all control knobs, shields, covers, ground straps and mounting
hardware have been replaced. Be absolutely certain you have replaced all
the insulators.
4) Look for unauthorized replacement parts, particularly transistors that
were installed during a previous repair. Point them out to the customer and
recommend their replacement.
5) Look for parts which, though functioning show obvious signs of
deterioration. Point them out to the customer and recommend their
replacement.
6) Check the line cords for cracks and abrasion. Recommend the
replacement of any such line cord to the customer.
7) Check the antenna terminals, metal trim, metalized knobs, screws and all
other exposed metal parts for AC leakage. Check leakage test as described
next.
8. For safety reasons, repairing the Power board and/or Inverter board is
prohibited.
3)Check all control knobs, shields, covers, ground straps and mounting
hardware have been replaced. Be absolutely certain you have replaced all
the insulators.
4) Look for unauthorized replacement parts, particularly transistors that
were installed during a previous repair. Point them out to the customer and
recommend their replacement.
5) Look for parts which, though functioning show obvious signs of
deterioration. Point them out to the customer and recommend their
replacement.
6) Check the line cords for cracks and abrasion. Recommend the
replacement of any such line cord to the customer.
7) Check the antenna terminals, metal trim, metalized knobs, screws and all
other exposed metal parts for AC leakage. Check leakage test as described
next.
8. For safety reasons, repairing the Power board and/or Inverter board is
prohibited.
Figure 2. AC voltmeter to check AC leakage
Safety Notes
1-3. Caution About the Lithium Battery
1) Danger of explosion if battery is incorrectly replaced. Replace only with
the same or equivalent type.
2) Outer case broken battery should not contact to water.
the same or equivalent type.
2) Outer case broken battery should not contact to water.
1-5.Leakage Test
The AC leakage from any exposed metal part to earth ground and from all
exposed metal parts to any exposed metal part having a return to chassis must
not exceed 0.5mA (500 microamperes).
Leakage current can be measured by any one of the three methods:-
1) A commercial leakage tester such as the SIMPSON 229 or RCA WT540A.
Follow the manufacturers instructions to use those instructions.
2) A battery-operated AC milliampmeter The DATA PRECISION 245 digital
multimeter is suitable for this job.
exposed metal parts to any exposed metal part having a return to chassis must
not exceed 0.5mA (500 microamperes).
Leakage current can be measured by any one of the three methods:-
1) A commercial leakage tester such as the SIMPSON 229 or RCA WT540A.
Follow the manufacturers instructions to use those instructions.
2) A battery-operated AC milliampmeter The DATA PRECISION 245 digital
multimeter is suitable for this job.
1-6. 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
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;
the lamp should light at normal brilliance if the screw is at ground potential
(see Figure 3).
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
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;
the lamp should light at normal brilliance if the screw is at ground potential
(see Figure 3).
Figure 3. Checking for earth
ground.
ground.
RB2G
CHASSIS
W950B/ W955B/ W957B/ M25B
7
Safety Notes
1-7. Lead Free Information
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.
Figure 4: LF Logo
Figure 5: LF logo on circuit board
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.
1-8. Handling the FLEXIBLE FLAT CABLE (FFC)
When you insert / pull out FFC, please grasp a reinforcement board and main
body of FFC.
Main Board
Main Board
Please hold reinforcement board and
plunge it to depths.
plunge it to depths.
Please pull out FFC while pushing the
button of both ends at the same time.
button of both ends at the same time.
< Insertion>
Release Button
of Connector
FFC connector broken if pull out FFC
without press and hold both Release
Button of connector. Symptom 5X blinking
will be appear due to improperly seated.
without press and hold both Release
Button of connector. Symptom 5X blinking
will be appear due to improperly seated.
<Pull out>
RB2G
CHASSIS
W950B/ W955B/ W957B/ M25B
频道
+
频道
-
主菜单
SECTION 2
SELF DIAGNOSTIC FUNCTION
2-1. Overview of Control Buttons
8
Self Diagnostic Function
2-1-1. (EXCEPT CHINA)
2-1-2. (CHINA)
INPUT SELECT /
SELECT/ CONFIRM
Press to select the next or
previous channel.
In TV Home Menu: buttons
will work as (select/confirm)
SELECT/ CONFIRM
Press to select the next or
previous channel.
In TV Home Menu: buttons
will work as (select/confirm)
+/- (Channel) / / ,
+/- (Volume) / / .
Press to select the next or
previous channel.
Press to adjust the volume.
In TV Home Menu: buttons
will work as , , , .
+/- (Volume) / / .
Press to select the next or
previous channel.
Press to adjust the volume.
In TV Home Menu: buttons
will work as , , , .
频道
Power
Turn the TV on or switch to standby mode
Turn the TV on or switch to standby mode
Press to display
the TV Home Menu.
主菜单
TV CONTROLS/ TERMINALS/ INDICATOR
FRONT
Sensors /illumination/Microphone
(Remote control sensor/
Light sensor/Built in Microphone)
(Remote control sensor/
Light sensor/Built in Microphone)
REAR OF TV
HOME
Press to display
the TV Home Menu.
Press to display
the TV Home Menu.
Power
Turn the TV on or switch to standby mode
Turn the TV on or switch to standby mode
INPUT SELECT /
SELECT/ CONFIRM
Press to select the next or
previous channel.
In TV Home Menu: buttons
will work as (select/confirm)
SELECT/ CONFIRM
Press to select the next or
previous channel.
In TV Home Menu: buttons
will work as (select/confirm)
TV CONTROLS/ TERMINALS/ INDICATOR
FRONT
Example
Illumination lights up or blinks in different
colours according to the status of the TV
( details refer to 2-2. LED Display Control)
colours according to the status of the TV
( details refer to 2-2. LED Display Control)
CH+/- (Channel) / / ,
+/- (Volume) / / .
Press to select the next or
previous channel.
Press to adjust the volume.
In TV Home Menu: buttons
will work as , , , .
+/- (Volume) / / .
Press to select the next or
previous channel.
Press to adjust the volume.
In TV Home Menu: buttons
will work as , , , .
REAR OF TV
Built in Camera
Sensors /illumination/Microphone
(Remote control sensor/
Light sensor/Built in Microphone)
(Remote control sensor/
Light sensor/Built in Microphone)
Example
Illumination lights up or blinks in different
colours according to the status of the TV
( details refer to 2-2. LED Display Control)
colours according to the status of the TV
( details refer to 2-2. LED Display Control)
Built in Camera
RB2G
CHASSIS
W950B/ W955B/ W957B/ M25B
Status
White Center
LED
(applicable for
HSC2 only)
Side RGB LED
Side Amber
LED
Remarks
Power Off
( by power saving switch off and *1)
Off
Off
Off
*1 power switch off (by side
key)
Power On
White
Off
Off
STBY/i.LINK STBY/PC STBY
( by remote control off only )
Off
Off
Off
Skype Call Receive
White
White one shot
Off
Picture Off
White looping
White one shot
Off
Device Connection
White
Cyan one shot
Off
Power ON Animation
White
White one shot
Off
Sleep Timer/On
Timer/Reminder/REC Timer/Photo
Frame
( Power On )
White
Amber
One shot -> Lit*2
Off
*2 One Shot is only user action.
On Timer/Reminder/REC Timer
( Deep Standby )
Off
Off
Amber
After 5 minutes, side amber
LED On
Failure
Off
Red
Blinking
Off
The number of LED blinking
indicates cause of failure
( refer to Led Error / Triage
chart)
Aging mode
White
Green Blinking
Off
Blinking:0.5sec On / 0.5sec Off
End of Aging mode
White
Green Blinking
Off
Blinking:3sec On / 3sec Off
Software Updating
white blinking
white blinking
off
Software Updating finish
White
Blue lit
off
Test Reset
White
white blinking
Amber
blinking
Error of panel ID
White
Green Blinking
Amber
Blinking
Blinking:0.5sec On / 0.5sec Off
REC (SCART REC & HDD
REC/LIVE PAUSE) [AEP/J only]
White
Red(Pink)
One shot -> Lit*2
Off
*2 One Shot is only user action.
ePOP/
Shop Illumination
White
Cyan loop
Off
9
Self Diagnostic Function
2-4. Standby LED Error Display
2-2. LED Display Control
When safety shutdown occurs, Standby LED display reports the cause by using the lightning
patterns as indicated below
patterns as indicated below
.
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.
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.
2-3. LED Pattern
Smart Core
RED LED
blinking count
Detection Items
Board Error Item
2x
Main 12V failure [MAIN_POWE]
* This failure is not saved
G** Board Error
BAX Board Error
BAX Board Error
3x
Main 5.0/3.3/1.8/1.0/ 1.1V failure [DC_ALERT]
* 5.0/1.0V failures are not saved.
BAX Board Error
Audio amp. protection [AUD_ERR]
BAX Board Error
Speaker
Speaker
HDMI equalizer/switch I2C NACK [HDMI_EQ] * There is
Temp. sensor on the same I2C bus.
Temp. sensor on the same I2C bus.
BAX Board Error
Tuner or demodulator I2C NACK [TU_DEMOD]
BAX Board Error
AFE device I2C NACK [AFE_I2C]
BAX Board Error
AFE device error SPI NACK [AFE_SPI] * only for AEP,CH
BAX Board Error
4x
LED driver failure [LD_ERR]
LED Driver (LD) Board Error
Panel module
Panel module
LED voltage error [VLED]]
LED Driver (LD) Board Error
Panel module
Panel module
5x
Panel ID EEPROM I2C NACK (Also panel power failure is
a suspect) [P_ID_ERR]
a suspect) [P_ID_ERR]
Panel module
Tcon board
G** Board Error
BAX Board Error
Tcon board
G** Board Error
BAX Board Error
6x
Backlight failure [BACKLIGHT]
Panel module
G** Board Error
BAX Board Error
G** Board Error
BAX Board Error
Backlight converter OVP [BACKLIGHT]
Panel module
Tcon board
G** Board Error
BAX Board Error
Tcon board
G** Board Error
BAX Board Error
7x
Over temperature protection [TEMP_ERR]
Temp. sensor I2C NACK [TEMP_ERR] * There is HDMI Eq
on the same I2C bus.
on the same I2C bus.
BAX Board Error
8x
Software Error (Also the main board’s memory or CAM
module is a suspect)
module is a suspect)
BAX Board Error
9x
Tuner Board Error [TU_BOARD]
Tuner Board Error
Size
G* Board Type
55”
G1A
65”
G2A
Click on the first or last page to see other KDL-55W950B / KDL-55W955B / KDL-55W957B / KDL-65W950B / KDL-65W955B service manuals if exist.