Ampex 351 - Page 26

Adjusts reproduce level.
PLAYBACK LEVEL R36
VU METER Ml
SI
S4
PLAY button
S505
RECORD button S6
REWIND button
S507
S506
STOP button
S502
4-3
INPUT
TRANSFER SWITCH
Tape Transport
control cluster
Tape Transport
control cluster
Tape Transport
control cluster
Tape Transport
control cluster
Electronic
Assembly
front panel
Electronic
Assembly
front panel
Electronic
Assembly
front panel
Electronic
Assembly
front panel
Electronic
Assembly
front panel
89-0144
Issue A
FAST FORWARD
button
Provides a means for visually monitoring
record input level, reproduce level, and bias
and erase.
Provides a means for selecting the appro 
priate input circuitry to record with a micro 
phone or from a balanced or unbalanced line.
Controls output termination of the reproduce
amplifier. In the ON position a 560 ohm
resistor is across the output. In the OFF
position, the resistor is out of the circuit and
the amplifier must then feed a 600 ohm
device.
Controls tape motion in the reproduce
(PLAY) and record modes. Interlocked with
rewind and fast forward modes.
Controls the record relay in the electronic
assembly. Power is applied to the bias erase
oscillator and to the fourth stage of the
record amplifier when this button is pressed.
The PLAY button must be pressed to put the
tape in motion before the record button is
used.
Controls the rewind relay. Full a-c power
is connected directly to the rewind (supply)
motor when this button is pressed, the re 
sistance R504 is placed in the a-c circuit to
the take-up motor.
Controls the fast forward relay. Connects full
a-c power to the take-up motor and places
resistance R504 in the a-c circuit to the
rewind motor when this button is pressed.
When this button is pressed, the brake solen 
oids and all relays are de-energized.
LINE TERM
OFF ON