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Main Unit
FEX
FEX
M a i n
Unit
FEX BOARD
*
*
SEE
NOTES 3
r
* *
SEE
NOTES 3
n
CHO
r
# #
SEE
NOTES
3
REC
/
SYNC
TO
HEAD
REC / SYNC
CH
1
I
I
1
CH 2
REC
/
SYNC
TO
HEAD
TO
HEAD
3
CNJ 218
-
1
i
T
1 1 :
3.3
4
,
2
3
CNJ
218
-
2 T
4
3
1 : 3.3
4
—
2
1
2
CNJ 218 -
3
I
I
4
-
BLK
T 7
1 : 3.3
2
2
1
2
2
-
BLK
o
2
I
2
o
- BLK
I
2
5
+ REC /
1
SYNC
|
o
SYNC
5
I
+ REC
/
SYNC
SYNC
i
i
5
+ REC
/
SYNC
1
I
I
SYNC
1
O
I
1
3
/
775
1
1
3
/
775
1
3
o
3
3
/
775
o
1
3
SHLD
•
SEE NOTE
T
~
L
1
330
MH
3
"
A
3
—
[
<
JJ
SHLD
~
;
^
lCNJ
219 - 2
3
•
SEE NOTE
2 l
L
2 330
MH
f
5
VNVCNJ
219
-
1
^
fo
SHLD
—
- -
j
CNJ
1
+
5 V
|
J
219
-
3
^
j
R 2
,
CNJ
217
-
1
•
SEE NOTE
2 l
L 3 330
mH
217 - 2
R
4
*
f t
?
""
CNJ 217
-
3
R 6
1 K
R 3
.
1
I . 5 K
(
—
11
—
vw
R 5
1
1 K
VA
rrrr
\
C 13
D
1
i t
1
vw
C
14
IK
8
n
10 /
25
NPO
1 SS 119
C 15
I
.
5 K
0
10
/ 25
NPO
C 3
390
pF
C
7
cTi
I
REC
1
.
C
1
DRIVE
*
T
*
1000 pF
390
pF
10 / 25 NPO
172 - 5
REC
i
.
C 5
DRIVE
-
r
1000 p
=
390
pF
X
C
9
T
1000 pF
1 SS 119
172
-
5
1 SS
119
REC
2
DRIVE
2
2
CNJ
216
-
1
T 2
1 : 12
T 5
1
: 12
CNJ
216
-
2
CNJ
216
-
3
T 8
1
: 12
2
I
1
2
PRI
I
I
SEC
I
1
2
PRI |
_
I
SEC
u
I
SEC
PRI
|
C 2
,
470 pF
BIAS
BIAS
C 6
,
470 pF
•
i
1
\ \
C 1 0
BIAS
n
_
J
1 : 10
1
ERASE
TO HEAD
1
1
1
11
1
: 10
_
J
ERASE
TO
HEAD
ERASE
TO HEAD
470 p F
1
T 9
1
: 10
3
I
1
1
ERASE
3
1
PR
1
1
I
ERASE
SEC
C
4
3
SEC
I
ERASE
C 8
PRI
PRI
SEC
ERASE
C 1 2
2
1800 pF
I
ERASE
I
4
1800 pF
SHLD
2
4
ERASE
1
8 0 0 p F
4
-
J
I
*
2
SHIELD
CNJ
220
-
2
SHLD
I
o
Jr
CNJ 220
-
1
I
CNJ 220
-
3
+ 5 V
CNJ 204
1
2
RESERVED
3
(
SYNC CH
2
)
4
(
SYNC CH
1
)
(
SYNC CHO
)
5
6
(
ANALOG
GND
)
.
NOTES
(
UNLESS OTHERWISE SPECIFIED
)
:
1
.
ALL
RESISTOR VALUES
ARE IN OHMS
.
1 / 8
W
.
1
«
/ o
*
2
.
LT
, L 2 &
1.3
ARE SHIELDED
BY
WRAPPING EACH
INDUCTOR
WITH
M
METAL
.
THEN
INCAPSULATE
THE WRAPPED INDUCTOR
IN
SHRINK TUBING .
# #
3
.
The following
circuit
is
only
aoDlicable
to
the
FEX Boara
(
Boana
No
.
1
-
619
-
179
-
11
ana
-
j
12
only
)
.
Serial Nos
;
APR
-
5002 20001
TO
20300
CHO
CHI
CH
2
FEX
1
-
619
-
1 / 9
-
11
Applicable
Serial
NO
.
1
-
619
- 1
/
9
-
13
ana
highe
"
Pa
^
ts
that
have
been changea
.
Pms that
have
been changea
.
CNL
.
TCC
\
Pa
~
ts
that have
been
aaaea
.
REC
/
SYNC
TO HEAD
-
12
APR
-
5002
APR
-
5003
2
20201
ana
higher
20401
ana
hlahen
1
-
619
-
158
-
n
C 3
.
C 7
.
Cll
430
pF
—
•
-
390
pF
o
1
No
Problem
TO Tl
p i n
2
Can
t
use
3
-
BLK
-
12
N .
C
Rl
.
R 2
.
R 3
.
R
4
SAME
AS
CHO
Tl
.
T
4 .
T 7
BPin
6
P
in
4 P
in
SAME AS
CHO
CNJ 219
CNJ 220
Aao
;
6
Aaa
:
i
.
5
k
IK
20301
ana
higher
20501
ana
highe
°
4
Pin
3
Pm
IP m
5
P
in
7
+
REC
/
o
JW
4
JW
5
1 -
619
-
15 B
-
13
ana
higher
TO
Tl
pin
4
5
SYNC
Q
9
(
P
1086
)
0 e lete
;
N
.
C
Delete
:
Q
9
ana
JW
4
TO CNJ 218
GND
JW
5
o SHLD
Figure 7 - 2 2
.
FEX
Board
Schematic
Diagram
TO
Ta
TO
02
FEX
BOARD
BOARD
NO . 1
-
619
-
179
-
11
S
HIGHER
APR
-
5002
/
5003 V
7
-
28
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