Board Layouts; Functions Of Internal Switches - Sony RM-B750 User Manual

1-4. Board Layouts

1-5. Functions of Internal Switches

1-4. Board Layouts
VA-211 board
CN-2308 board
LED-389 board
LCD unit
1-2 (E)
CN-2278 board
LED-385 board
VR-277 board
MPU-124 board
1-5. Functions of Internal Switches
MPU-124 Board
. S201
This switch is not used.
Factory-setting: OFF
. S205 (BUZZER ON/OFF)
This switch selects whether the buzzer sounds (ON) or
not (OFF) when the CALL signal is input.
Factory-setting: ON
*1: S205 is not used on the MPU-124 board with suffix -21 and higher.
. S206 (CCU-PW ON/OFF)
This switch turns on/off the power to the front panel.
Factory-setting: ON
C
S206
S205
S201
B
A
1
*1
*1
2 3
MPU-124 board (A side)
RM-B750