Service manual

alsa apparecchi medicali s.r.l.
Cod. alsa: 801304
EXCELL mod. MCDS
Rev: 4.1B 22/MAR/99
Approval:
Drawn by:
BIS_O95H - DRIVER RF
DRVRF2
GND
IRFLMA
IRFLMB
IOVER
GND
AUDMAX
AUDCTR
IRFMED
MODMEN
CLKRF
RFENB1
+15VF +15VF GND
+15VF
+15VF
+15VF
VREFRF +5VF
+5VF
+15VF
-15VF
VREFRFVOUTPK
ICLMP
ICLMP
+15VF
GAL_F6
VPKREF
ICLREF
VREFRF +15VF
BIPSET
BRAMP
BRAMP
FAUDIO
-15VF
Q3
OUT A
11
PWR GND
12
C.L.
9
OUT B
14
CT
6
VREF
16
RT
5
RAMP
7
N.I. INP
2
INV. INP
1
E/A OUT
3
+VIN
15
GND
10
VC
13
SS
8
CLK
4
U3
R67 R68
R73
C25
D9
D7
D8
D13
Q5
D12
R69
R70
C42
R75
C34
D10
C37
C22
3
2
6
75
4
U4
R74
C41
D11
3
2
7
5
64 8 1
U5
C47
C39
C38
C40
R71
C21
R16
R44
R42
R43
R46
R47
R48
R52
R54
R55
R60
R62
R61
R58
R49
R51
C35
R64
R65
R66
C36
R76
C20
C18
C24
R53
C23
R50
C26
C1
C2
C3
R4
D1
C4
C5
D4
4
5
6
U1B
1 2
3
14 7
U1A
9
10
8
U1C
12
13
11
U1D
R3
R45
R2
XT1
Q4
R59
C17
R56
C19
R41
R12
R14
C16
L1
C44
R72
C43
C45
R27
R1
R40
R39
R63
R36
R38
D5
D6
C7
C13
R37
C27
R15
R11
R35
R31
5
6
7
U2B
D3
R7
Q2
R9
R5
R6
R10
R8
Q1
C6
D2
C46
C28
R57
C29
R28 R30
R33
R34
R32
R23
R25
R20
R18
R17
R26
R19
C8
C14
C10
C11
R22
R21
3
2
1
84
U2A
C9
C12
C15
R13
+15V
-15V
DRVRF2
MODMEN
IRFLMA
IRFLMB
RFENB1
FAUDIO
IOVER
AUDMAX
VPKREF
ICLREF
VOUTPK
CLKRF
BIPSET
AUDCTR
GAL_F6
GND
+5VF
TO uP1
J3
J2
TO LOUDSPEAKER
DRVRF1
J4
EPLS
EPLS
R24
R29
L2
L3
C30
C31
C32
C33
+15V +15VF
-15VF-15V
LOUDSP
1
3
5
2
4
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
J1
WAKBLK
R79
R77
R78
Q6
WAKBLK
R80
R81
C48
C49
J
K
e1