Use With A Psx-R; Multiway Connector Pin Assignments - Cyrus 6 Service Manual

CYRUS 6 & 8 - Use with a PSX-R

Multiway connector pin assignments

The connections between the Cyrus 8 and PSX-R function as follows-
Pin 1 (Standby)
This is an output from the Cyrus 8 to send a standby control message (logic 1, +5V) to the PSX-
R, enabling the regulated power supplies of the PSX-R. Note that this pin will not change state if
the Cyrus 8 detects a fault (See pin 5).
Pin 2 (Positive supply)
For the Cyrus 8 application this pin delivers +35V from the PSX-R to the Cyrus 8, switched by
the Standby control system.
Pin 3 (GND)
This pin is the system ground return between the Cyrus 8 and PSX-R.
Pin 4 (Negative supply)
For the Cyrus 8 application this pin delivers -35V from the PSX-R to the Cyrus 8, switched by
the Standby control system.
Pin 5 (PSX-R detect)
This pin is an input to the Cyrus 8 to detect the presence of a working PSX-R. The line condition
is Logic 1 (+5V) at all times when a PSX-R is connected and power is applied. (The PSX-R will
change the state of this pin to logic 0 if an internal fault occurs in the PSX-R).
This diagram shows the pin numbers of the
Cyrus 8 power supply input connector. View
is of the connector pins from the rear of the
amplifier
5 Jan 2006