Sony CA-590 - Manual (Page 9)

Internal Boards and Switch Settings
9
Internal Boards and Switch Settings
To reduce the risk of electric shock, fire or injury, do not open the cabinet. To adjust the internal settings, refer to qualified
service personnel.
Note
CA-590/590P
Unscrew the four screws.
MD-132 board (no switches)
a TR-132 board
b MA-128 board
c AU-294 board
CA-590/590P
Unscrew the four screws.
d DM-139 board
e MB-1019 board