HP LaserJet II Serie Manual De Instrucciones página 249

HP 33440/HP 33449 COMBINED SERVICE MANUAL
This statement redirects LPT1 output to the COM2 poti.
MODE LPT1: =COM2:
Note
If COM2 is not available on your computer, substitute COM1 for COM2 in the
.8
above statements.
v
b
Configure the printer for RS-232 at 9600 baud. Hook it to the COM2 (or COM1) port on the PC
using the appropriate cable and repeat the test message procedure above. See Append& B or the
pamphIet, Your Guide to Setting up Your bserJet III, for the appropriate mble.
If the problem persists, proceed with the following checks in Table 7-51.
Table 7-51. Communications Checks
1. Is your computer configured
to the following parameters
(assuming a serial interface is
used)?
Start Bits = 1
Stop Bits = 1
Dab Bits = 8
Parity
= None
2. Does the printer's baud rate
match that of the computer's
communications port?
3.
Are you using the correct ~ble
!or communications between the
:omputer and the printer?
i. Are you using the correct
RS-232-C protocol?
These parameters are required to communicate with the
printer. Veri& your computer's communimtions port
configuration matches these parameters.
Note:
If these parameters are not set properly, it may also
field a 40, 20, or 22 ERROR on the printer's Control Panel.
Run the printer's Self Test b veri~ the baud rate setting. At
the computer, veri& that the baud rate is correctiy set in any
configuration files.
Note:
A baud rate problem may dso yield a printer
40 ERROR.
See the cable wiring diagrams in Appendk D.
Hinti On an RS-232 cable, pins 2 and 3 may need to be
reversed at the printer-end of the cable.
During the communications "handshake," the printer
bransmiti both the XONflOFF signal and the DTR signal.
rhe DTR (Data Terminal Ready) signal maybe either
negative going or positive going.
DTR polarity is set at the printer's Control Panel.
rhe XON maybe set to normal (only transmitted when data
s needed) or Robust XON (transmitted every second). This
~eatureis also configurable from the Control Panel. DTR is
kvailableat pin 20 and XOFF is transmitted from pin 2 of the
~rinter.
7-85