PB/REC EQ ST PRE AMP

S1A0292A01

7

APPLICATION INFORMATION

1. FUNCTION SWITCH

— A/B SWITCH : A-DECK MODE = HIGH (5 V)

B-DECK MODE = OPEN (HIGH IMPEDANCE)

*** On record mode, A-DECK is work only

NOTE: The voltage of pin 27 is forced by a switch controller. If the voltage varies very fast from low to high, or high to low, then

tape output makes a large pop noise.

To avoid this, we recommend slow switching.

— R/P SWITCH : REC MODE = HIGH (5 V)

PLAY MODE = OPEN (HIGH INPEDANCE) OR GND

— Cro2B SWITCH : (B-DECK ONLY)

Cro2B PLAY = GND (0 V)

— Cro2A SWITCH : (A-DECK ONLY)

Cro2A PLAY = GND (0 V)

HIGH SPEED TAPE EQUALIZING = GND (0 V)

— MUTE SWITCH : MUTE ON = HIGH (5 V)

MUTE OFF = OPEN (HIGH IMPEDANCE) OR GND

A-on

B-on

A/B

function

B-off

A-off

2.5V

1.5V

Voltage of pin 27