Sony CA-550, Руководство по обслуживанию, Страница: 23 / 114

2-5 (E)
CA-550
CA-550P
2-7-2. Replacement of CN-1190 Board
n
Every electrical part mounted on the CN-1190 board
cannot be repalced. If there is any defective part, replace
the board itself.
1. Remove the right and left side panels referring to
Section 2-1.
2. Pull out the three plug-in boards, MD-103, AU-211
and TR-90.
3. Disconnect CN2 from the DM-98 board. Remove the
three screws and remove the spacers and the DM-98
board. If the option board DM-99 is installed, carry out
Step 4.
4. Disconnect CN2 from the DM-99 board. Remove the
three screws and remove the spacers and the DM-99
board.
5. Remove the four screws and remove the rail bracket.
6. Remove the two screws securing the CN-1190 board.
Disconnect the two flexible card wires referring to
Section 2-6.
2-7. Replacement of Board
TR-90
AU-211
MD-103
7. Install a new board in the reverse procedures of the
removal.
B2.6
X
5
B2.6
X
5
Rail bracket
B3
X
4
CN2
DM-99 (option)
Spacer
DM-98
CN2
B3
X
4
B3
X
4
Spacer
B3
X
4
B3
X
4
CN-1190
Flexible
card wire
Precision
P2
X
5