Linear AT7120, Руководство пользователя, Страница: 44 / 76

AT7120 Owner Manual Rev. 1.1
– March 2009 44/76
1A
2A
3A
1B
2B
3B
4B
5B
6B
(G
Y
)
R
ES
T
A
R
T
PI
N
6
–
C
O
N
-3
–
C
O
N
T
R
O
L
U
N
IT
(R
D
)
+32
V
R
E
A
D
IN
G
P
IN
9
–
C
O
N
-9
–
C
O
N
T
R
O
L
U
N
IT
(O
R
)
C
U
R
R
EN
T
R
EA
D
IN
G
(+32
V)
PI
N
8
–
C
O
N
-9
–
C
O
N
T
R
O
L
U
N
IT
C
O
N
9
C
O
N
1
0
C
O
N
1
1
C
O
N
1
2
C
O
N
1
3
C
O
N
1
4
C
O
N
1
5
W
H
)
G
N
D
(W
H
)
G
N
D
(G
R
)
+9V
(B
L
)
+18
V
(O
R
)
+32
V
R
EL
(R
D
)
+32
V
C
O
N
1
GN D
C
O
N
2
(B
R
)
A
C
(W
H
)
G
N
D
(B
K
)
A
C
1
2
C
O
N
6
C
O
N
7
C
O
N
8
C
O
N
5
110V
C
O
N
4
0V
C
O
N
3 220V
(BK) GND FAN
(RD) +12V FAN
T
PO
-2
T
PO
-4
T
PO
-3
T
PO
-1
T
PO
-6
TPO -5
TPO -7
T
PO
-8
T
PO
-9
(B
K
)
-1
8
V
*
CI
-1
S
G3
5
2
5
.
10
S
D
G
T1
S
D
G
T2
D8
D12
D9
VEN
T
.
T3
~ +14V
.
CI-2
0
V
:
n
o
rm
a
l
1
,5
V
:
inh
ib
it
e
d
s
w
it
c
h
in
g
0
V
:
n
o
rm
a
l
5
V
:
inh
ib
it
e
d
s
w
it
c
h
in
g
3
TEST OF THE INTERNAL DIODES OF T1 AND T2

SWITCH OFF the power!

Digital Multimeter in the scale of diode test.

Test made with T1 and T2 soldiers in the board

Tip (+) in S and tip (-) in D: ~500

Tip (-) in S and tip (+) in D: infinite resistance
CI-1 SG3525
Switching Pulse 11, 14
Shut Down 10
Oscillator 5
+4,5V (soft-start) 8
Ground (GND) 12
+15V (supply) 13,15
+5V
2
PINS
16
+5V (reference voltage)
CI-1 pin 14
– 32V WITH LOAD
CI-1 pin 14
– 32V WITHOUT LOAD
TPO-1
Adjustment output v32V
TPO-2
Adjustment reading output c32V
TPO-3
** Adjustment reading output c18V
TPO-4
** Adjustment reading output c9V
TPO-5
Adjustment reading output v32v
TPO-6
** Adjustment reading output v32V RESTART
TPO-7
Adjustment reading output voltage -18V
TPO-8
Adjustment reading output v18V
TPO-9
Adjustment reading output v9V
FUNCTION (MEASURE)
(B
K
)
–
1
8
V
R
E
A
D
IN
G
P
IN
6
–
C
O
N
-9
–
C
O
N
T
R
O
L
U
N
IT
(G
R
)
+8V
R
E
A
D
IN
G
P
IN
5
–
C
O
N
-9
–
C
O
N
T
R
O
L
U
N
IT
(B
L
)
+18
V
R
E
A
D
IN
G
P
IN
7
–
C
O
N
-9
–
C
O
N
T
R
O
L
U
N
IT
Fig.6.2: Module 4401
– Main components board displacement