EPSON Stylus Color 900

Revision C

3.1.3 Isolating the Faulty Part according to the Phenomenon

Refer to this section if you could not solve the problem in Section 3.1.1 or Section 3.1.2 or need more information to isolate the cause according to the exhibited phenomenon. The contents mostly cover the problems relating to the C265 Main board and their remedies.

Table 3-21. Phenomena Exhibited

No.

Phenomenon Exhibited

Table to refer to

 

 

 

1

The cooling fan does not rotate.

Table 3-22,

 

Note the cooling fan does not constantly rotate.

 

 

Refer to Chapter 2 / Section 2.3.7.

 

 

 

 

2

CR motor does not rotate.

Table 3-23

 

 

 

3

PF motor does not rotate.

Table 3-24

 

 

 

4

pump/ASF motor does not rotate.

Table 3-25, Table 3-26

 

 

 

5

ASF solenoid does not operate.

Table 3-27, Table 3-28

 

 

 

6

Cleaning does not solve the print problem.

Table 3-29 - Table 3-33

 

 

 

7

Ink End Error occurs after the printhead is

Table 3-34

 

replaced, so the printhead can not be adjusted.

 

 

 

 

Table 3-22. Cooling Fan does not Rotate

Step

Check Point

 

 

 

 

 

 

 

 

Action

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

Is the fuse (F6)

Place the probes of the tester on the both terminals of

 

open?

the chip fuse (F6) on the C265 Main board. Then

 

 

check for electrical continuity. F6 is located beside the

 

 

Q7 which is in front of the cooling fan connector

 

 

(CN13).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

Is the transistor

Q7 is beside the connector (CN13 for the cooling fan).

 

(Q7) defective?

Since the three terminals for the base, emittor, and

 

 

collector are not marked, try every pattern below to

 

 

check for electrical continuity. Be sure to test with the

 

 

correct polarity. The correct findings are shown under

 

 

the figure.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

S t e p

 

1S t e

 

 

S o ld e r e d

 

 

 

 

 

 

 

 

a r e a

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-

+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+

 

 

 

 

 

 

-

 

 

 

 

 

 

 

S t e p

3S t e

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+ +

 

 

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Step 1: On, Step 2: Off, Step 3: On, Step 4: Off

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

Is the internal coil

Replace the Fan unit and then check for the correct

 

for the fan motor

operation.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

open?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

Is the C265 Main

If the cause has not been isolated yet, replace the

 

board defective?

C265 Main board.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Troubleshooting

Overview

92

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Epson SEIJ98006 Isolating the Faulty Part according to the Phenomenon, Phenomena Exhibited, Cooling Fan does not Rotate
Page 91 Page 93

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