Service manual

ManualsBrandsEpson ManualsNetwork CardC82305

Table 5-5. Repairing the BOARD ASSEMBLY, C094 MAIN (Continued)

Problem

Symptom

Cause

Checkpoint

Solution

~aper

feed

The printer

ICI is

Check the input signal (pin 2) and the output

Replace ICI.

abnormal.

does not defective.

waveform (pin 3).

feed the

I

paper at all

(CH2:PIN

3)

or the paper

E

feed is

k

b

irregular.

I

:

I

*

I I I

I

h

I

I I

II

t

I I I

I I

II

I

I

!

i-l

1-

;

[

[

k

-WI!

(

Cf-Il:PIN

2)

-

i

m

+

*

4

CH1=2V

CH2=50V

TlME=2ms

r

1

1

I

I

1

ncorrect

Data is

Either

IC4

or

Replace

IC4

]rinting

of

corrupted

IC5

is

or

IC5.

iata

sent when the

defective.

from

the

parallel

host

interface is

:omputer.

used.

5-17