Service manual

alsa apparecchi medicali s.r.l.
alsa code: 801307
EXCELL 400 MCDS
Rev: 4.2 29/Mar/99
Approval:
Drawn by:
BIS_O95Y - Power Reader Board (2)
-15V
+15V
+15V
-15V
-15V
+15V
+15V
-15V
-15V
+15V
RDGAIN
VRDMBA
VRDMBB
IRDMBA
SAMPLE
+15V
-15V
GND
TO uP1
+15V
GND
-15V
+5V
+5V
+5V
TP3
TP4
Vref
Vref
IRFMB
IRFMB
Vref
-15V
+15V
SAMP
SAMP
RDG
RDG
+15V
-15V
IRDMBB
IRDMBA
+15V
+15V
+15V
-15V
To Power Supply
-15V
+15V
POWER
POWER
1.42V
+15V
+15V
-15V
TP1
TP2
TP5
TP6
TP7
TP8 TP9
TP10
PWRFB
PWRFM
PWRFM
7
8
5
2
1
13
9
11
6
3
4
15
16
12
10
U2
Q3
R4
R5
R7
R8
B
2
V-
4
V+
13
C
1
VL
12
G
5
A
3
U1A
R1
R2
C1
C2
C3
C4
C5
C6
C7
C12
C13
C15
C16
D1
D2
D3
D4
R9
R10
C11
B
7
C
8
A
6
U1B
R14
R16
R17 R18 R19
R20
R22
R23
R24
R25
R11
R13
R29
R30
R32
R34
R35
R36
R37
R38
R39
R40
R43
R44
R47
R48
R50
C14
C18
C19
C20
C21
C23
C22
C24
C56
C57
C58
3
2
1
411
+
-
U4A
12
13
14
+
-
U4D
13
12
14
0 0
-
+
U5D
2
3
1
411
-
+
U5A
10
9
8
+
-
U5C
X1
1
Y1
3
W
7
+VS
8
-VS
5
Y2
4
X2
2
Z
6
U6
X1
1
Y1
3
W
7
+VS
8
-VS
5
Y2
4
X2
2
Z
6
U8
D5
D6
D7
D9
Q1
Q2
R15
C8
D8
R41
R45
J2
R26
C26
C27
C28
C29
C30
C31
C32
C33
C34
C35
C36
C37
C38
B
15
C
16
A
14
U1D
R12
R21
B
10
C
9
A
11
U1C
R51
R53
R60
R61
R63
R64
R65
R66
C40
C41
C42
C43
C44
C46
C47
C48
C51
D10
D11
D12
D13
3
2
1 5
6
74
+
-
U9
2 1
3
U10
C53
C50
C52
R62
R57R55
R56
R54
R52
R58
R59
R67
R79
C49
R69
R71
R72
R73
R76
R77
R78
R81
R82
R83
R84
R85
R86
R87
R88
R89
R90
R91
5
6
7
+
-
U5B
R70
C54
C55
R46
R33
R74
C17
C9
C10
C39
R3
R6
L1
L2
C25
C45
1
3
5
2
4
6
J3
1
3
2
4
J4
R42
R80
R68
R75
R31
R27 R28
1
3
5
2
4
J1
R49
5
6
7
U4B
10
9
8
+
-
U4C
3
2
1
8 4
U7A
5
6
7
U7B
3
2
1
8 4
U3A
5
6
7
U3B
N
O
P
Q
R
S
N1
N2
h1