Service manual

alsa apparecchi medicali s.r.l.
alsa code: 801326
EXCELL MCDS mod. 200 - 350
Rev.: 4.1 3/Dec/98
Approval:Drawn by:
BIS_O95R - Sezione uP2
4.81V
RESET NOWDT
QA
QB
QC
QD
ADC1
ADC2
ADC2 ADC1
VREF+
VREF+
RST
RST
PWRBLK
WDCK
KEYBDA
INT0
INTIIB INTAUXINT0
IE
IE
KEYBDA
INTAUX
+5V
ADC3
TERM2
ADC3
+15V
TERM1
GND
GND
ADC4
ADC4
+5VF
QA
QB
QC
QD
+15V
+5VF
+5VF
+5VF
+5VF
+5VF
+5VF
+5VF+5VF
+5VF
NUPIN
NUPIN
OUTAUX
SETIME
PWMAUX
INT1
INT1
STDBY
LEDSB
ANAUX
ANAUX
RSTUP2
+5V
GND
PWRBLK
TERM2
+15VPWMAUX
INTIIB
RSTUP2
TERM1
SETIME
STADBY
PWRBLK
LEDNP
LEDSB
STDBY
+5VF
TO uP1
TO POWER
SUPPLY
BOARD
+15V
INTAUX
ANAUX
SCLuP2
SDAuP2
SCLuP2
SDAuP2
SDA
SCLGND
KEYBDA
OUTAUX
QA
QB
QC
QD
LEDSB
INTAUX
+5VF
+15V
GND
GND
ANAUX
SCLuP2
SDAuP2
LEDNP
PANEL BOARD
200_O95S.SCH
IICBUS
XT1
J1 J2
J7
R2
R13
R14 R15
R16
C18C17
R21
R22
R23
C2
C1
C15
R24
C19
C14
C11
C20
R11
R12
C4
R28
L2
C3
1
2
3
4
5
J10
C10
X1
11
INT0/P1.5
20
INT1/P1.6
21
P3.0
5
P3.1
4
P3.2
3
P3.3
2
P3.4
1
P3.5
27
P3.6
26
P3.7
25
SCL/P0.0
8
SDA/P0.1
7
P0.2
6
P0.3
23
PWM/P0.4
24
ADC0/P1.0
13
ADC1/P1.1
14
ADC2/P1.2
15
ADC3/P1.3
16
ADC4/P1.4
17
VCC
28
VSS
12
RESET
9
X2
10
AVCC
19
AVSS
18
T0/P1.7
22
U2
CT
1
RST
2
CK
3
RST
8
VS
7
VREF
6
GND
4
VCC
5
U1
2 1
3
U3
C21
C22
C8
R17
C9
Q2
R7
C5
R6
D1
R4
C6
R25
C16
R1
R3
R5
Q1
C7
R30
R27
R8
R39
R40
R42
Q3
R29
1
3
5
2
4
6
7
8
9
10
11
12
13
14
J5
R43
R44
C23
C24
L3
L4
L1
C12
J3 J4
10
9
8
7
6
5
4
3
2
1
R9
R10
C13
R18
R19
R31
R32
R33
R34
R35
R36
R37
R38
R20
R41
LEDNP
1
3
2
4
J6
R26
J8 J9
l1