Akai GX-630D Operator's Manual

HEAD BLOCK CLEANING
Heads
The GX (glass and crystal) Heads do not require a
great deal of cleaning, However, if old tapes or tapes which
have been spliced are used, GX head cleaning is also
recommended.
Clean recording, playback, and erase heads with a cotton
swab stick which has been dipped in Akai Cleaning fluid
from Head Cleaning Kit HC-500.
Pinch wheel and capstan
If foreign matter is allowed to accumulate on the pinch
wheel and capstan, these particles will come off on the tape
causing deterioration of sound quality. Oil adhering to the
capstan also causes irregularity in tape transport. Therefore,
it is also recommended that these parts be wiped clean
periodically. Use Akai cleaning fluid or alcohol
* Do not use chemicals such as chloroth:
cleaning as the rubber parts will deteriorat
ne, ete. for head block
HEAD DEMAGNETIZING
Prolonged use of the machine will gradually build up
residual magnetism on the heads, The effect of magnetiza-
tion is that it causes a considerable drop in high frequency
response and introduces noise into your recordings. It is
therefore, recommended that head demagnetizing be per-
formed periodically. This can be accomplished with a bulk
head demagnetizer by bringing the prongs of the demag-
netizer close to the heads and making several small circular
motions over all head surface areas as well as the head
housing.
* Turn off the power of the unit prior to demagnetizing the heads.
Do not use magnetized tools in the vicinity of the heads and VU
Meters.
* Do not bring the magnetizer close to the VU Meters.

Akai GX-630D Specifications

General

Track System	4-track, 2-channel, stereo/monaural system
Reel Size	up to 10.5 inch reel
Wow and Flutter	0.06% (7 1⁄2 ips)
Signal to Noise Ratio	58dB
Output	0.775V
Type	Reel-to-reel tape deck
Heads	3 (erase, record, playback)
Motor	2 x reel, 1 x capstan
Tape Speeds	3 3⁄4 ips, 7 1⁄2 ips