Troubleshooting

Table 3-8. Symptoms and Flowchart References (Continued)

 

 

 

 

 

 

 

Flowchart

Symptom

 

Possible Problems

or Solution

 

 

 

 

When I try to load paper, the

•

There is a problem with one of the PE sensors.

Use Table 3-2

printer feeds it back out.

•

The main board is not reading sensor output correctly.

to test front and

 

 

 

rear PE sensor.

The printer continues printing

• There is a problem with one of the PE sensors.

 

beyond the paper end onto

•

The CO94 MAIN board is not-reading sensor output

 

the platen.

 

correctly.

 

 

 

 

 

After I micro adjust top

•

Page size may be set incorrectly in printer.

See Chart 7.

margin, the top margin of

•

Application software may be set incorrectly.

 

subsequent pages is wrong

•

CO94 MAIN board may have a problem.

 

or drifts down the page.

 

 

 

 

 

 

 

The carriage slams into

•

There is a problem with the HP sensor.

Use Table 3-2 to

the right side of the

•

The CO94 MAIN board is not reading the sensor

test sensor.

printer, or the printer doesn’t

 

correctly.

If problem is with

find home after power on.

•

(For narrow carriage printer) the main board E2PROM

the E2PROM, call

 

 

may have the wrong carriige width.

dealer BBS at

 

 

 

(800) 234-i 445

 

 

 

for Version 4.0 of

 

 

 

Confidence Test

 

 

 

to reprogram.

 

 

 

 

The FX-1170 will print only

•

The E2PROM on the CO94 MAIN board contains the

Call dealer BBS

BO columns.

 

wrong carriage width.

at (800) 234-1445

 

 

 

for Version 4.0 of

 

 

 

Confidence Test

 

 

 

to reprogram.

 

 

 

 

The printer double-spaces

•

Auto LF is set to ON in default setting mode.

See Chart 8.

lines of text.

•

Software is set up incorrectly.

 

 

• (If parallel) computer is constantly holding pin 14 LOW.

 

 

 

 

 

Serial Communications Errors

Some common serial data transmission problems can be identified by their symptoms. The table below lists these problems and their corresponding solutions.

Table 3-9. Identifying Serial Communications Errors

Problem

 

Possible Cause

 

Solution

 

 

 

 

 

Garbled print

•

Baud rate mismatch

Verify DIP switch settings on the interface card. Type

 

•

Parity mismatch

a MODE command at the MS-DOS prompt to match

 

 

 

these settings. For instance, if the serial interface

 

 

 

card’s switches are in the factory setting, type:

 

 

 

 

MODE=COMn:9600,N,8,1 ,P

 

 

 

 

(“n” is the number of the COM port you are using.)

 

 

 

 

 

 

 

 

E p s o n F X - 8 7 0 1 1 1 7 0

3-7