Akai GX-77 Service Manual

LOADING GEAR
LOCK LEVER
REEL MOTOR (RIGHT)
. LOADER PLUNGER POSITION
ADJUSTMENT (Refer to Fig. 36)
With the loading roller up (FWD/REV PLAY mode or
with the loading roller up/down button up), adjust
the position of the loader plunger with the screw (a)
so that the lock lever is removed from the lock plate
of loading gear and put on the lock plate.
LOADER PLUNGER
PLUNGER ARM
Fig. 36
VRI 20K
(3-3/4in)
VRe I0K
(7-1/2in)
MOTOR SERVO
PCB
Fig. 37
6. TAPE SPEED ADJUSTMENT
(Refer toF ig. 37)
Set the Tape Speed Switch to 7-1/2 ips. andplayback
the 1,000 Hz, 7-1/2 Test Tape. Connect a frequency
counter to VR2 10kB until the counts reads,
1,000 Hz + 0.8%. Next, set the Tape Sped Switch
to 3-3/4 ips. and adjust VR1 20kB untj the fre-
quency counter reads 500 Hz + 1.0%.
SS
29

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