Sony HDCU3300 HD, Maintenance Manual

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2-3 (E)
HDCU3300/MM (J, E)
When the switching regulator has been replaced
with a power block assembly (A10)
When the switching regulator (1-468-945-21) has been
replaced with a power block assembly (A10) (A-1768-444-
A), replace the PS panel assembly and the protection sheet
(AU-302) with those for the power block assembly (A10),
and then replace the power supply unit referring to
“Switching Regulator (1-468-945-21)” and “Power Block
Assembly (A10) (A-1768-444-A).”
Replacement Parts
Part: PS panel assembly (for power block assembly
(A10))
Part No.: X-2549-575-1
Part: Protection sheet (AU-302) (for power block
assembly (A10)
Part No.: 3-986-514-02
Replacement Procedure
1. Disconnect the harness from the connector CN2 on the
CN-2700 board of the PS panel assembly.
2. Remove the four screws (B3
x
5) and remove the AU-
302 board from the PS panel assembly.
3. Remove the two screws (P2.6 x 5) and remove the
CN-2700 board from the PS panel assembly.
4. Remove the two rivets to detach the protection sheet
(AU-302) from the AU-302 board.
Power block assembly (A10)
. UC : 110V-120V
. J : 100V
. CE : 220V-240V
AC100V
AC120V
AC220V-240V
AC100V
AC120V
AC220V-240V
AC100V
AC120V
AC220V-240V
Screws
(B3
x 5)
Screws
(P2.6
x 5)
AU-302 board
Rivets
CN-2700 board
CN2
PS panel
assembly
Protection sheet (AU-302)
6. Set the two voltage selectors on the new power block
assembly (A10) to the setting show in the diagram.
7. Confirm if the CAMERA fuse of the replacement
power adapts to the working power supply voltage. If
not, replace it with the one adapting to the working
power supply voltage. (Refer to Section 2-1-2.)
n
If the rating of the fuse doesn't adapt to the working
power supply voltage.
8. Install the power supply unit by reversing the steps of
removal.