Vt420 Worldwide Models - DEC VT420 Service Manual

66 Physical/Functional Diagrams
L K 4 n n
R 6 4 7 S U B
C O N T R A S T
R 6 1 9 V - S I Z E
R 6 1 1 V - L I N
R 6 1 5 H - H O L D
R 6 5 6 S T A T I C
F O C U S
R 6 5 7 S C R E E N
P 6 - R E D
P 7 - B L U E
Figure C–2

VT420 Worldwide Models

VT420 Worldwide Model: Signals and Pin Assignments
Terminal Board Assembly
J1 DEC-423 Comm1 Port Connector
Pin 1 HDTR2
2 HTXD2
3 GND
4 HCOM
5 RXD2
Y E L K
J 4
D 3 0 4
P 1 - G R E E N
J 6 0 1
P 3 - B R O W N
P 4 - B L A C K
P S
J 2 J 1
J 3
C o m m 1
C o m m 2 /
C o m m 1
D E C - 4 2 3
P r i n t e r
R S - 2 3 2
D E C - 4 2 3
Data terminal ready
Transmitted data
Transmit ground
Receive ground
Received data
P 7 0 1
G R N G 1
B L E G 4
J 7 0 1
B R N H 1
R E D G 2
J 8 0 1
A C I N
G S F _ 1 4 6 7 _ 8 9 . D G
L J - 0 1 6 2 8 - T I 0