KDL40R420, KDL32R420 – Sony LCD TV – repair procedure, software update, disassemble procedure
KDL-32R420B
RM-YD092 US/CND
KDL-40R470B RM-YD092 US/CND - ITC3
Chassis
SONY BRAVIA KDL-32R420B 32" 720p LED-LCD TV - 16:9 - HDTV ATSC - 178° / 178° - 1366 x 768 - Dolby Digital - 2 x HDMI - USB / KDL32R420B
TROUBLESHOOTING
DIAGNOSING THE ERROR
Before servicing the Television
1. Verify the TV has the symptom the customer indicated.
2. Check to see if the latest Software is installed.
a. If not, install the latest version.
3. Determine the replacement part required.
VIEWING THE SELF CHECK DIAGNOSIS HISTORY
When an error
is detected, the Self Check screen records the number of times the
error occurred. This is helpful in confirming past occurrences of an
error and for determining if an error is intermittent when the customer
is not sure what is causing the television to shut down. If the screen
displays a “0”, no error has occurred.
Press the Power to turn on the TV and then turn it off again.
2. Press the following buttons on the Remote Commander within 1 second of each other:
Info(i+) > Channel (5) > Volume (--) > Power
NOTE: This differs from accessing Service Adjustments Mode (Volume +)
Click on the pictures to magnify
TRIAGE
CHART
Use
this general Triage Chart to determine what may possibly be causing the error
before going out to the customers location.
Confirm
the symptom from the customer. Red Dot: (Primary) Most likely defective part.
2. Select that symptom from the chart. Blue Triangle: (Secondary) Possible defective part.
3. Bring the primary component listed for that symptom.
5. Chart Color Code.
4. Follow the flowchart to isolate the board .
2. Select that symptom from the chart. Blue Triangle: (Secondary) Possible defective part.
3. Bring the primary component listed for that symptom.
5. Chart Color Code.
4. Follow the flowchart to isolate the board .
Chart
Color Code
REPAIRING
THE TV
If the latest Software does not correct the issue, complete the following:
1. Verify the television has the symptom the customer indicated.
2. Replace part causing the symptom.
3. Install the latest version of Software (Required for ALL repairs).
4. Perform the required service adjustments and checks.
5. Verify the repair resolved the issue.
If the latest Software does not correct the issue, complete the following:
1. Verify the television has the symptom the customer indicated.
2. Replace part causing the symptom.
3. Install the latest version of Software (Required for ALL repairs).
4. Perform the required service adjustments and checks.
5. Verify the repair resolved the issue.
REMOVING
THE TABLE TOP STAND
1. Place TV face down on a flat and steady surface.
1. Place TV face down on a flat and steady surface.
2.
Remove all screws and grasp as shown to detach the Table Top Stand.
REMOVING
THE LOWER COVER
1. Locate and remove all screws from the Lower Cover.
1. Locate and remove all screws from the Lower Cover.
2.
Locate the areas shown in the illustration and detach the Lower Cover from the
TV.
REPLACING
THE MAIN BOARD
The Main Board used in these models is available for repair.
The Main Board used in these models is available for repair.
1. Slide
the Side Bracket and Under Bracket to detach from Main Board.
2.
Locate and disconnect the connectors. Then remove all screws from the Main
Board and lift to detach.
3.
Install the new Main Board, connectors and screws.
4. Update the Software.
After ALL repairs UPDATE the SOFTWARE to the latest version.
4. Update the Software.
After ALL repairs UPDATE the SOFTWARE to the latest version.
Software
update procedure
a. Insert
the USB device with the latest Software into one of the TVs’ USB ports.
b. Connect TV to AC power.
c. Wait at least 20 seconds.
d. Press the Power on the remote to turn ON the TV.
e. Wait until the Software update is completed.
b. Connect TV to AC power.
c. Wait at least 20 seconds.
d. Press the Power on the remote to turn ON the TV.
e. Wait until the Software update is completed.
5.
To access Service Mode, turn TV ON and OFF again then press the following
buttons within 1 second of each other:
Info
(i+) > Channel (5) > Volume (+) > Power
6. Press the DN until Panel Selection is selected.
7. Press Left or Right to select the correct Panel Code for the TV model. (Use the table below for reference)
8. Locate the Serial Number for the TV on the side of the Rear Cover.
9. Press DN until SERIAL NUMBER EDIT is selected.
10. Press RIGHT to be able to select the first digit.
11.
Press UP or DOWN to select numbers and then RIGHT to move to the next digit
until Serial Number is complete.
CAUTION:
The Serial Number can only be selected once. Be sure to verify the information
is correct before saving the changes.
12. When the complete Serial Number displays, press (+)
12. When the complete Serial Number displays, press (+)
13.
On the confirmation screen, press LEFT to select YES and then (+)
14.
Press DN until MODEL NAME EDIT is selected.
15.
Press RIGHT to be able to select the frst character.
16. Press UP or DN to select characters and then to move to the next space until Model Name is complete.
NOTE: Make sure to include dash in Model Name.
CAUTION: The Model Name can only be selected once. Be sure to verify the information is correct before saving the changes.
17. When the complete Model Name displays, press (+)
18. On the confirmation screen, press LEFT to select YES and then (+)
19. Press POWER to exit Service Mode
How to remove the speakers, replacing the switch unit
Disconnect the connector from Speakers and lift as shown to detach.
REPLACING THE SWITCH UNIT
1. Disconnect the connector from the Switch Unit and lift as shown to remove.
2. Install the new Switch Unit and its connector.
