Read Sony KDL-32R420B / KDL-40R470B Service Manual online
KDL-32R420B/40R470B 13
SECTION 3 - REPAIR INFORMATION
REPLACING THE MAIN BOARD
The Main Board used in these models is available for repair. For Part
Number information refer to
Number information refer to
Section 4 - Exploded View/Part Number
Information on page 17.
1. Slide the Side Bracket and Under Bracket to detach from Main Board.
Side
Bracket
Side
Bracket
Under Bracket
Under Bracket
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.
Instructions are included with the Software package on the
Instructions are included with the Software package on the
Sony
Authorized Service Portal
website.
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
I/0
on the TV to turn it ON.
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:
DISPLAY
Channel
5
Volume
+
I/0
>>
Self diagnosis history
>>
Panel Selection
Wide Band Tuning
Wide Band Tuning
>>
LVDS Spectrum (%)
29
Tuning System
Auto
Status Digital RF Information
Off
Off
Low of HPD
5
UART Selection
Factory
SERIAL NUMBER EDIT
MODEL NAME EDIT
TEST RESET
MODEL NAME EDIT
TEST RESET
[</>]Set [Home] Exit
Service Mode
NS4S400DND0101
Status Information
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Off
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