Akai GX-77 Service Manual

LR SS es eres
2. EXPLANATION OF EACH MODE
1) IC1 (HD38800A42) Terminal Description
LED SEGMENTS
‘d
e
f
9g
STROBE SIGNAL |
COUNTER UP/DOWN
DIRECTION
REEL MOTOR(RIGHT )
REEL MOTOR (LEFT)
O
+10V
18
HO038800A42
103
2 04
3 D5
4 D6
5 D7
6 D8
7 D9
8 DIO
9 DI
10 DI2
Il DI3
12 DI4
13 O15
14 Voip
I5 RESET
16 Ves
17 Voo
18 OSC
19
20 TEST
2! Vss
D2
DI
DO
R33
R32
R31
R30
R22
R21
R20
INT! 31
INT# 30
RI3 29
Rl2 28
Ril 27
RIO 26
R3 25
R2 24
23
22
c
| LED SEGMENTS
Qa
QT
LOADER PLUNGER
REV PLUNGER
FWD PLUNGER
PB MUTE
REC MUTE
OSC DRIVE
BACK UP
TAPE PULSE
FUNCTION INPUT
BRAKE PLG
© FAST
Fig. 18

Akai GX-77 Specifications

General

Track System	4-track, 2-channel stereo
Tape Speed	3 3/4 ips, 7 1/2 ips
Wow and Flutter	0.03% (19 cm/s)
Heads	3
Motors	3
Dimensions	440 x 244 x 358mm
Inputs	Line input (RCA)
Outputs	Line, Headphones