Schematics - Intermec EasyCoder 501 XP Service Manual

Chapter 2 Front and Keyboard

2.4 Schematics

C1
GND
GND
R4
VCC
VCC
R28
D2 GREEN
R1
A C
D3 RED
R2
A C
D4 GREEN
R3
A C
GND
P1
1
SDA
2
SCL
3
INT
4
RESET
5
6
7 GND
8
9
10 VCC
VCC
C12
GND
18
1-971604-27 Console pcb.
VCC
R27 R5
GND
VCC
15 16
A B
3 2
VDISP VCC
5
R/W
6 1
E GND
4
RS DISPLAY DISPLAY
GND
GND
IC3B
4 3
74HC05
VCC
R6 R7
VCC
IC2A
4
R9 PRE
IC3A 2
D
1 2 3
CLK
1
CLR
74HC05
74HC74
C13 C14 C15
GND GND GND
VCC R19
R11
R12
R13
R14
R15
R16
R17
R18
GND
1 10
PB0 Ain/PA0
2 13
PB1 Ain/PA1
4 14
PB2 Ain/PA2
5 15
PB3 Ain/PA3
6 16
PB4 Ain/PA4
7 17
PB5 Ain/PA5
8 18
PB6/ATIn Ain/PA6
9 19
PB7/ATOut Ain/PA7
ST6265 23
NMI
22
RESET
28
PC0/Ain
27 21
PC1/Tin/Ain OSCout
26 20
PC2/Sin/Ain OSCin
25
PC3/Sout/Ain
24 3
PC4/SCK/Ain TEST
IC1
GND
VCC
R8
IC3C IC2B
5 6 10
PRE
12 9
D Q
74HC05
11 8
CLK Q
13
CLR
74HC74
GND
5
Q
6
Q
Intermec EasyCoder 501 XP – Service Manual Ed. 4
P2
KEYBOARD
1
2
3
4
5
6
7
8
9
R25 R23 R21
R26 R24 R22
X1
VCC
8MHz
C2 C3
R10
GND GND
C11
GND GND
B1
1
Beeper
2
VCC
R20
C10
C9
C8
C7
C6
C5
C4
GND
D1
R29
C16