Akai GX-747 dbx Service Manual

V . VOLTAGE AND CYCLE CONVERSION
D
1
0
g
D
VO L TAGE SE LE CTOR
VS90I
0~
POWER CORD - ---;,,,
-
,~
r
D
i
'--
__,
1 I I
!
FUSE(A) PCB
TI00902440
SYSCON PCB
t
CYCLE CHANGE SWITCH --~ =1
SW I '-- ~-= -'
60 Hz ---- 50Hz
Fig. 5 -1 Voltage Conversion (U/T Model) and Cycle Conversion (U/ T, JPN Model)
1. VOLTAGE CONVERSION (Refer to Fig. 5- 1)
U/T Model (1 10V / 120V/220V / 240V , 50 /6 0 Hz)
Remove
the back boa rd and l ook for th e voltage
se l ector on th e u pper right portion of the ma -
chine. Chan
ge th e pos i tion of voltage se l ecto r
plu
gs so th at the vo lt age to be used co incides
w
ith the voltage shown throug h the open ing of
voltage
selector plug . Fuse change is not nece s-
sary.
2. CYCLE CONVERSION (Refer to Fi g. 5-1)
Remove th e back board and select the position of
switch l ocated in the recess at right port i on of Syscon
P .C B oard to correspond to the frequency of power
to be used. Move the switch to the ri ght for 50 Hz
and to the l
eft for the 60 Hz.
---------------S ERVICE MANUAL GX - 747 <.l bx ------ - --------
8

Akai GX-747 dbx Specifications

General

Track System	4-track, 2-channel stereo
Reel Size	up to 10.5 inch reel
Type	Reel to Reel
Heads	2 x erase
Motor	1 x capstan, 2 x reel
Tape Speed	9.5 cm/s, 19 cm/s
Wow and Flutter	0.03% (19 cm/s)
Signal to Noise Ratio	65dB
Input	1 x line, 1 x microphone
Output	1 x line
Dimensions	440 x 480 x 260 mm