Teac MT-20D-IO - Page 25

W
t-'
W
51
-00-
GAIN
SELECT
TP~
~ ~ C3~
r ---1- - ---- --I r--- -- - -- -----',
READ HEAD + + r--- 1 + + + + 1 1 + + I
,..-o---i TR 0/2 ~ All f- T VOLTAGE ~ '-t-r- 1 DIFFEREN- f'- ... ZERO I
~ PRE AMP I CONTROLED AGC AMP' I FILTER I _ TIATOR CROSSING 1-7-1
~ - U4 i=-- ~~I f-- -;.:;. AMP =-r;. =-;..-...... ! -_ DETECTOR
rnM -~ I I 1
I L _______ J r----------..J
TRACK
SELECT
r--o--+- ..... +'"l TR 113 ~ A TT
~ PRE AMP
f--
VC--t - U5 ~ ~ f--
TR 1/3
BIAS 6V
U7
TRO/2-
"---
I I r-----l--------,
! U6 AGC f4 - 1 1 I
1------ -- -s"2-l DETECTOR IlL., TIME I
r---9 9--r- f4 - 1 TP7 I DOMAIN r- 1
J, t:J I FILTER GATE t-o--o RD
TP3 PI L ______ - - --' 1
r,:==================~TP8 I
L
'-----', r:----~-l-----J
All r--r- LEVEL THRESHOLD MONO-
R48 1_ DETECT DETECTOR r-r- MULTI r-
'- ~ r-;- AMP r
! TPIO .-L~T=H=R=ES=H=OL=D~
1 CONTROL l-
I IL-~====~ ______ . __ ~
~~---------------------~
TPII ___
'----+--0 LTH
RMOOE
Fig. 309 Read circuit block diagrma