Revox A77 Service Manual

- 5. ELECTRONICS
Plug-in
Output Ampl.
Regulator
The electronic circuitry is divided into groups, plug-in
modules for the most part. There are etched circuit card
plug-in modules for :
— Input amplifier, record amplifier, playback amplifier,
oscillator, and record relay.
— Output amplifier.
There are several etched circuit boards, rigidly mounted
but with plug- on connectors for:
— Regulator
— Drive control with photoelectric end- of- tape switch.
— Capstan motor control.
Block Diagram Amplifiers I
The block diagram shows the relationships between the
plug- in amplifiers.
CH I
AUX
RADIO
MIC
IAV
Fig. 5.-29
81
„
Woo» é AI. Tve Sentch
IEC
INPUT
flea. A .R.
25
• •
O de ,
Velure
Plop. Node & met.
STEREO
01 I
01 It
MONO
•
•—•
•
•
• \
Inpul Selacto.
Plug-in Ampl. Capstan Motor
Control
Drive Control
Fig. 5.-28
De. Awed. ,
SPEAKERS
OFF
OUI ArvIder
- MIAOW -
•--AAAAr-C
•
Record
Volume
Control
88. 8e ,
Volume
Comm , 0
IS
•
A cm I
Rate. Pr*.
V CO 11
•
Posneon Steno
I Buttons dHaremed I
Po.« 1
I
SR I
sl,RRER
• J
Veer
Paxxr AH88,fer
( RADIO I
—( OUTPUT I 2.5V
VAI PHONES
ounne II 2,1v
RADIO II
8 IV
1.--( SPEAKER II
)8-
0.olteo ,
Relay
e
Power Supply
17

Revox A77 Specifications

General

Brand	Revox
Model	A77
Category	Tape Deck
Language	English