Scully 280 Series - Page 13

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O I'ERATI:-!G
On Ule alignment and calibration control .trlp.
T h. purpocc e>1 t e> .. ltow a reo.dtty av.n_
able r eferen(e te> openttng le,·(, \. In orde r te>
utilize this feat ure. lurn the playback le vel
con trol to tM CAL posttlon . Ad just reference
t one from allJllment tape t orcad''O''{o r deslrtXI
level) by adju'ItlnK reference set tr imme r (IU: F
SE T ). The playbclck level control can be ad-
justed at w\ll, with the oppor t Wli ty to r eturn In-
nantly to operallng level by lurnlng pbybclek
le ... el cont r ol to thl! CAL _Ilion . Lorld ler·
mlna ll on req uirements remai n the same.
e. All ment and Calibration Ad us !-
e ron pane ress srp U'
len<><l by three screw.) arc a series of conlrol.
Ih al should no: be adjusltXI "x c ept by ellperlen ced
Ope r a t ors , and then Qn\y .-hen going th rou gh the
complet e test and check procedu r es on the ma-
chill(' ..-h.Ich are OUllined bel ...... The.se conlrols,
reading f rom left to ri ght, are Noise Balanc:e,
l'I ayback Equallzallon, Low3peed Ret.: ... .! Eo,fIo.u,
I,.,.tlon, High Speed Record Equalization, Un .. -
arity T est PUllhbulton, Unea rit y C ontro l, Recon:!
Calibr a llon. Playback Level Reference Pot, DiU
Adjustment, Blat Callbration , and Btas
A comp l ete dncrlpUon of these controh will be
found in the Alignment and Pcrlorm anceChec ks
portion of the Eleclronics section {Secllon V} 01
this manual . A combination alignmenl tool Is
fumishtXI l Or the.se adJuslments.
3.3. OPE RA TING PROCEDURE
3.3. 1. Prelim i nary (See flgur e 3-3. )
- Plac e a reel of
b pe hub and thr ead
"" - -f--, ......
as Indica t ed. In tbe tape threading dl"lram
( fi g. 3 - 3). T ape b }""""ely wnen It 18
be t w een the Capmn and th e Pressu ....
b_ Power _ Power lor all operations Is
con troll ed 6Y1Iii" AC power _lteh on the op_
erations con tro l panel of the tape transport
mechanism.
Re co rd
Rewtlld
F
as t Forwan:!
,,,,,
.. "
,& .
Red (lIiumln.lted)
8>00
Wblte (illumina t ed )
C .... en
Ycllaoo-
3.3.2. P layback
Aller properly threading the tape, 5 (1 the
Moni tor swilch on t hC EJ ectronlcs Panel 10 Fl ay.
back. the desired tape speed. and reel
slus by mUM 0' the Capstan Speed and neel
Size swllohes on t he con tr ol panel. Preel Ihe
gr ee n Sta rl bunon. !!2tt.: With mall1,lally
ated ta pe litter the tape Iilter muSI be r aIled 10
113 upper """ili on.
3.3 .3 . Ree o rd h'lg
Selecl the ta pe spe ed (this w!ll aulomat!-
.... ..
, .. " .. .. ,.
S
>--u -. +- ...
• .0 .
1·
_0 0 0000
..... ... ...
Figure 3-3. Tape Threadlng P ath
I