Table of Contents
Advertisement
Troubleshooting
The printer has a 25-pin connector with the following pin-
out designations and signal mnemonics:
Printer Communications Connector Pin-outs
15-Pin
25-Pin
DSUB
DSUB
Signal Name
1
NC
NC
2
20
NC
3
4
CTS (Clear To Send)
4
2
RXD (Receive Data)
5
3
TXD (Transmit Data)
6
5
RTS (Ready To Send)
7
6
DTR (Data Terminal
Ready)
8
9
HHC_CHARGE
9
7
GND
10
NC
NC
11
11
IO_SENSE
12
18
IOB_RESET
13
25
TTL_POWER
14
NC
NC
NC
NC
NC
NC
NC
V_IN
5-12
4820 Printer User's Guide
Table 5-4
Type
I/O
-- -- --
-- -- --
-- -- --
-- -- --
RS-232
IN
RS-232
IN
RS-232
OUT Printer's TxD
RS-232
OUT IrDA baud rate select
RS-232
OUT IrDA baud rate select
POWER
OUT 10--15 V, up to 1 A per
POWER
-- -- --
-- -- --
0--5 V
IN
ANALOG
TTL
OUT Signal to hold I/O
POWER
OUT Power for I/O board
-- -- --
-- -- --
-- -- --
IN
-- -- --
-- -- --
SECTION 5
Description
NC (No Connection)
NC
Wakeup
Printer's RxD
contact
SG (Signal Ground)
Analog input signal
for I/O board type
detection. Normally
tied to +5 V.
board in reset.
logic (never shuts off)
Switched 5 V from
terminal.
Unswitched input
power from printer.
Advertisement
Table of Contents
