Ultrasound Technologies PD1 series, Service Manual

Page: 38 / 75

1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
A B C D
A B
C D
C23
2n2F
+
C32
470nF
+
C25
470nF
R38
10K
R39 10K
SK
1 3 2 4
SK2
1 3 2 4
J5
1 2 3 4 5
VR1 10K
R1
3M3
L3 0850
1 3
C46 33pF
C38 47pF
C42
100pF
C37 100pF
R6
22K
R4 22K
C40 22pF
VR2 20K
VR3 20K
+
C6
100uF
R11 470R
R18 68K
R9
68K
C20 68nF
C5 68nF
LM2907
U3
2
Charge
3
Ib
4
Is
1
Tco
6
Vcc
5
Vcco
8
gnd
7
op
MMBF4416
Q4
1
D
3
G
2
S
MMBF4416
Q7
1
D
3
G
2
S
MMBF4416
Q6
1
D
3
G
2
S
D2
BZX84C6V2
2 3
D4
BZX84C6V2
2 3
L4 0838
1 3
4 6
BAT54
D5
2
3
TL072
U5
5
I+
6
I-
8 4
7
TL072
U5
3
I+
2
I-
8 4
1
C30
470pF
C36
470pF
R33 1K5
R31
100R
R28 100K
R36 100K
R22
100K
R30
100K
R27
100K
R23
100K
R24
100K
R37 100K
L1 0841
1 2 3
BC848B Q3
2
B
3
C
1
E
BC848B
Q5
2
B
3
C
1
E
L2 0876
1 2 3
4 6
R25
22R
R32 27K
C41 220pF
C19 1nF
R19
100K
R5
100K
BSS138 Q1
3
D
2
G
1
S
ZM33064Z
U4
1
IN
3
OUT
YEL_3MM D3
2 1
C2
1uF
+
C1
100uF
D1
10BQ040
21
C10
470uF
ultratec 1999 Copyright
Drg No:
Date
ECN
Issue
Drawn:
Ultrasound Technologies Ltd
Gwent. NP6 6BZ. UK Itton, Chepstow Foresters House
Date:
of
Sheet
Name:
PD1VAS~1
10/19/00
11
3:24:04 PM
J4
1 2
J2
1 2
J1
1 2
LM386M
U2
7
1
8
2
M
3
P
6 4
5
+
C16 10uF
+
C17 10uF
R34 10R
R12
10R
R13 10R
R35 10R
Q2
RFD8P05SM
2
D
1
G
3
S
U1
CD4013
3
CLK
5
D
4
RESET
6
SET
2
Q
1
Q
U1
CD4013
11
CLK
9
D
10
RESET
8
SET
12
Q
13
Q
R17
4K7
R16 4K7
+
C4
0u47F
+
C7 0u47F
R15 2K2
R20 2K2
R29 2K2
R14 1K0
R2
1K0
R21 1K0
R26 1K0
+
C11
100uF
+
C15 100uF
+
C14 100uF
+
C33 100uF
+
C26 100uF
+
C29 100uF
C18 100nF
C13
100nF
C22
100nF
C21 100nF
C8 100nF
C9 100nF
C43
100nF
C47 100nF
C45 100nF
C31 100nF
C24 100nF
C28 100nF
R7 1M
R10 1M
R8 1M
R3 1M
C34
10nF
C27
10nF
C12 10nF
C3 10nF
C39
10nF
VccSW
Vrf
Vcc
TxSig
VccSW
Vcc
TxSig
Vrf
RxSig
RxSig
VccSW
Nov 99
L4 = 0839 L3 = 0874 C44,46 = 22pF C42 = 220pF C40,41 = 47pF C37,38 = 22pF
8MHz
Component
Frequency
Component
Frequency
C46 = 47pF C44 = 100pF C40 = 100pF C38 = 100pF
4MHz
PD1 Vascular (5MHz)
Loudspeaker
Volume Control
Data Output Socket Waveform
0.5V/KHz
Filtering
Receiver
Transmitter
frequency to voltage converter
Battery Input
1
NAS
Battery Low
Unit On / Off control