Sony KDE-55XBR950 (serv.man2) Service Manual ▷ View online
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5.6 ABUS-U3 Circuit Board Removal/Installation Procedure
When removing the circuit board after the main power is turned on/off, wait for at
least four minutes before starting to remove the circuit board.
If the circuit board removal is started immediately after turning off the main power, it
can result in electric shock or damage to the circuit due to residual electric charge.
least four minutes before starting to remove the circuit board.
If the circuit board removal is started immediately after turning off the main power, it
can result in electric shock or damage to the circuit due to residual electric charge.
Remove the circuit board following the steps below. To install the circuit board, reverse the removal
procedure.
procedure.
(1) Release the lock of CNU3-6, CNU3-7, CNU3-8, CNU3-9 and then reconnect the signal cable (FPC).
(2) Release the lock of CNU3-1, CNU3-2, CNU3-3, CNU3-4
(2) Release the lock of CNU3-1, CNU3-2, CNU3-3, CNU3-4
by lifting the lock
and then reconnect flexible cable
of ADM.
(3) Release the power supply connector CNU3-5, CNU3-10 on the ABUS-U3 board.
(4) Remove the fixing screws (M3x8) fixing ADM at 8 locations.
(3) Release the power supply connector CNU3-5, CNU3-10 on the ABUS-U3 board.
(4) Remove the fixing screws (M3x8) fixing ADM at 8 locations.
(5) Remove the fixing screws (M3x8) fixing ABUS-U3 at 2 locations.
(6) Release the space holder (rod) at the 1 location.
(6) Release the space holder (rod) at the 1 location.
(7) Remove the ABUS-U3 board.
(1)CNU3-8
(1)CNU3-7
(2)CNU3-4
(2)CNU3-3
(2)CNU3-2
(2)CNU3-1
(1)CNU3-9
(1)CNU3-6
(3)CNU3-5
(1)CNU3-10
(4)
(4)
(4)
(4)
(4)
(4)
(4)
(4)
(5)
(5)
(6)
Note
*
On handling the FPC connector
To release the lock, release it by gently flipping it with the nail of the
thumb or forefinger. Never pinch the lock lever with fingers or hook
on it (especially with a fingernail). Doing so might damage the lock
lever.
thumb or forefinger. Never pinch the lock lever with fingers or hook
on it (especially with a fingernail). Doing so might damage the lock
lever.
Note
-50-
⑦
Pick up and release upper the lock of space
holder (rod). Moreover, confirm the lock surely
combines intuition when you install the board.
holder (rod). Moreover, confirm the lock surely
combines intuition when you install the board.
Note
Pick up
Pick up
Space holder (rod)
PCB
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5.7 ABUS-U4 Circuit Board Removal/Installation Procedure
When removing the circuit board after the main power is turned on/off, wait for at
least four minutes before starting to remove the circuit board.
If the circuit board removal is started immediately after turning off the main power, it
can result in electric shock or damage to the circuit due to residual electric charge.
least four minutes before starting to remove the circuit board.
If the circuit board removal is started immediately after turning off the main power, it
can result in electric shock or damage to the circuit due to residual electric charge.
Remove the circuit board following the steps below. To install the circuit board, reverse the removal
procedure.
procedure.
(1) Release the lock of CNU4-4 and then reconnect the signal cable (FPC).
(2) Release the lock of CNU4-1, CNU4-2
(2) Release the lock of CNU4-1, CNU4-2
by lifting the lock
and then reconnect flexible cable of ADM.
(3) Release the CNU4-5 and power supply connector CNU3-10 on the ABUS-U3 board.
(4) Remove the fixing screws (M3x8) fixing ADM at 8 locations.
(4) Remove the fixing screws (M3x8) fixing ADM at 8 locations.
(5) Remove the fixing screws (M3x8) fixing ABUS-U3 at 2 locations.
(6) Release the space holder (rod) at the 1 location.
(6) Release the space holder (rod) at the 1 location.
(7) Remove the ABUS-U3 board.
(1)CNU4-4
(3)CNU4-5
(3)CNU3-10
(2)CNU4-2
(2)CNU4-1
(5)
(4)
(4)
(4)
(4)
(5)
(6)
Note
*
On handling the FPC connector
To release the lock, release it by gently flipping it with the nail of the
thumb or forefinger. Never pinch the lock lever with fingers or hook
on it (especially with a fingernail). Doing so might damage the lock
lever.
thumb or forefinger. Never pinch the lock lever with fingers or hook
on it (especially with a fingernail). Doing so might damage the lock
lever.
Note
-52-
⑧
Pick up and release upper the lock of space
holder (rod). Moreover, confirm the lock surely
combines intuition when you install the board.
holder (rod). Moreover, confirm the lock surely
combines intuition when you install the board.
Note
Pick up
Pick up
Space holder (rod)
PCB
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