Intermec EasyCoder 501 - Page 88

87Intermec EasyCoder 501 – Service Manual Ed. 7
Chapter 10 Ribbon Save Device
10.9 Connection
Board, cont.
Connection Board 1-040702-28; Circuit Diagram
P1
1 GND
2 +5V
3 LIFT_HEAD
4 NOT_RUN
5 EN_ENG2
6 RS_IDENT
7 ST1
8 ST2
9 ST3
10 ST4
11 ST5
12 ST6
13 GND
14 GND
15 V24
16 V24
C5
R15
R16
R14
V24
C8 C11
R18
IC5
CIN
5
TC
3
GND
4
CL+
6
R17
MC34063
CL-
7
SWE
2
DRC
SWC
8
1
DR1
BYV27
C10
C6
C1
R2 R1
+5V
+5V
C2 C3 C4
IC4C
9
V40
=1
10
74HC86
C7 IC4D
12
=1
13
74HC86
V40
D1
C12 C9
R19
GND
11
8
GND
ST1
ST2
ST3
ST4
ST5
ST6
GND
EN_ENG2
74HC573
11
CLK
1
OE
2 19 ST6_ENG2
D
3 18 ST5_ENG2
D
4 17 ST4_ENG2
D
5 16 ST3_ENG2
D
6 15 ST2_ENG2
D
7 14 ST1_ENG2
D
8 13
D
9 12
D
IC1
+5V
R4
P4
2
4 LIFT_HEAD
1 POSITION
3
R3
74HC86
+5V
2
NOT_RUN3
=1
1
IC4A
IC4B
4
=1
6
5
R5
74HC86
Q1
R7
Q3
Q2
R6
V40
DC MOTOR
P3
2
1
R9
C14
+5V
ST4_ENG2
ST5_ENG2
ST6_ENG2
R8
C13
+5V
ST1_ENG2
ST2_ENG2
ST3_ENG2
PBL3717
15
AOUT
8
PHASE
1
BOUT
9
I1
16
EMITTER
7
I0
14 V40
VM
11
VR
3 V40
VM
13
GND
2
TIMING
12
GND
10
CURRENT
5
GND
4
GND
IC2
C15
PBL3717
15
AOUT
8
PHASE
1
BOUT
9
I1
16
EMITTER
7
I0
14 V40
VM
11
VR
3 V40
VM
13
GND
2
TIMING
12
GND
10
CURRENT
5
GND
4
GND
IC3
C16
R13 R11
R12 R10
STEPPER MOTOR
P2
1
2
3
4
5
6
7
8