PROBLEM

SYMPTOM

CAUSE

SOLUTION

 

 

 

 

 

 

 

 

 

 

 

 

 

of the printer

 

 

 

 

 

 

 

 

HP LaserJet

Serial printer

The HP LaserJet will give this message

 

 

gives "Error 40"

cable or

when its DSR line (Pin 6) goes from

 

 

message

Model 24SII

positive to negative or zero volts. Verify

 

 

 

DES losing

that Pin 6 on the printer side of the serial

 

 

 

power during

cable is either connected or jumpered as

 

 

 

transmission

shown in Appendix A.3. Also verify

 

 

 

to printer

M24SII's AC power source.

 

 

 

 

 

 

Cannot

Control-T

Cable

Use correct serial cable between PC and

 

configure

followed by

 

Model 24SII DES. Check handshaking

 

Model 24SII

capital C (or F1

 

lines in TERM program.

 

DES

in TERM

 

 

 

 

program) sent

 

 

 

 

in dumb

 

 

 

 

terminal mode

 

 

 

 

does not invoke

 

 

 

 

configuration

 

 

 

 

menus

 

 

 

 

 

Port

Match baud rate, word size, stop bits,

 

 

 

configuration

parity and handshaking lines between

 

 

 

 

Model 24SII DES and PC. This can be

 

 

 

 

done using TERM program.

 

 

 

 

 

 

 

 

Port selection

Ensure PC COM port is connected to

 

 

 

 

configuration port of Model 24SII DES.

 

 

 

 

 

 

 

 

Software

Use dumb terminal or a PC running a

 

 

 

 

terminal emulation program (TERM

 

 

 

 

supplied by BayTech, or another

 

 

 

 

program such as CrossTalk).

 

 

 

 

 

 

Cannot

Port LEDs are

User activity

Wait until current activity between PC

 

configure

illuminated

 

and printer is completed. There should

 

Model 24SII

when trying to

 

be no red LEDs illuminated when trying

 

DES

access

 

to enter the configuration mode.

 

(continued)

configuration

 

 

 

 

mode

 

 

 

 

 

Bad PC COM

Try a different COM port or PC.

 

 

 

port

 

 

 

 

 

 

 

 

 

PC serial card

Reconfigure serial card, use a different

 

 

 

uses IRQ4

serial card, or different terminal

 

 

 

instead of

emulation program.

 

 

 

IRQ3

 

 

 

 

 

 

 

Prints

Missing

Incorrect

Check manual for correct pin-outs

 

Garbage

Characters

cable type (no

between PC and Model 24SII DES, and

 

 

 

data flow

between Model 24SII DES and printer.

 

 

 

control)

Check handshaking. A way to check is

 

 

 

 

to force an error condition at the printer

 

 

 

 

(i.e. remove paper tray from laser printer

 

 

 

 

or turn off-line with power still applied).

 

 

 

 

Send print job to printer. If printer LED

 

 

 

 

goes off, you can conclude no

 

 

 

 

handshaking was done. On serial ports,

 

 

 

 

check Model 24SII DES configuration to

 

 

 

 

match handshaking (i.e. you must be

 

 

 

 

using CTS/DTR or XON/XOFF for both

 

 

 

 

Model 24SII DES and printer). Also

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