Epson Stylus 800, Stylus 1000 Service Manual 5

Chapter 5

Troubleshooting

5.1. General Description ............................................................................................5-1

5.2. Troubleshooting Information..............................................................................5-1

5.2.1. Error mode ............................................................................................................................. 5-1

5.2.2. Sensor Check Points.............................................................................................................5-2

5.2.3. Motor Check Points............................................................................................................... 5-2

5.3. Repair and Replacement of the Unit Part..........................................................5-3

5.4. Repair of the C202 PSB/PSE Board Component ............................................5-11

5.5. Repair of the C202 MAIN Board Component...................................................5-13

5.6. Repair of the Printer Mechanism......................................................................5-16

Troubleshooting

5.1 General Description

This section describes how to identify and troubleshoot the problems when repairing the printer by dividing
the troubles into two levels; repair and replacement of the assemblies and units, and repair of the
components. W hen replacing or repairing the unit or assem bly, be sure to refer to the cor responding flow
chart which enables you to isolate the defective assembly or unit easily according to the symptom
occurred. In repairing the component, refer to Section 5.4 and 5.5 which provide check points listed
separately according to the major electric parts.

5.2 Troubleshooting Information

This section provides inf ormation on the er ror modes displayed on the control panel and check lis ts used
to determine if the units in each assembly are normally functioning.

5.2.1 Error mode

The LEDs on the control panel indicate several abnorm al status of this printer. Table 5-1 lists the printer
errors and corresponding LED status. (Refer to Figure 5-1 for LED arrangement.)

Table 5-1. Printer Error Status

Printer status LED (a) LED (b) LED (c) LED (d)

Ink sequence is proceeding. Blinks
Ink cartridge change sequence is

proceeding.
Paper out
Paper jam
Black ink cartridge ink end
No black ink cartridge installed
Black ink cartridge ink low
Color ink cartridge ink end
No color ink cartridge installed
Color ink cartridge ink low
Maintenance required (Waste ink pad
needs replacing.)
Fatal error Blinks Blinks On On

Note) “−−−” means no effect.

Blinks

−−−

−−−

−−− −−−

−−− −−−

−−− −−− −−−

−−− −−− −−−

Blinks Blinks Blinks Blinks

−−− −−− −−−

−−− −−− −−−

On

Blinks

−−− −−−

−−− −−−

On

Blinks

Blinks

−−−

−−−

On

(3)

(4)

(b)

(c)
(d)

(a)
(2)

(1)

Figure 5-1. Control Panel

Rev. A

5-1

EPSON Stylus

&2/25

800

5.2.2 Sensor Check Points

Table 5-2 shows the check points for each sensor.

Table 5-2. Check Points for Each Sensor

Sensor Connector

No.

CN6 (HP sensor) 1:HP

CN7
(ASF HP sensor)

CN8 (PE sensor) 1:PE

CN9
(Black cartridge
detecting sensor)

CN10
(Color cartridge
detecting sensor)

Test pin No Test procedure

(Meter is set to the DC voltage.)

Set the “+” lead of the meter to the
2:GND
3:HPV
1:ASF
2:GND
3:ASFV

2:GND
3:PEV

1:BCO
3:GND

1:CCO
3:GND

pin 1 and “-” lead of the meter to

the pin 2.

Set the “+” lead of the meter to the

pin 1 and “-” lead of the meter to

the pin 2.

Set the “+” lead of the meter to the

pin 1 and “-” lead of the meter to

the pin 2.

Set the “+” lead of the meter to the

pin 1 and “-” lead of the meter to

the pin 3.

Set the “+” lead of the meter to the

pin 1 and “-” lead of the meter to

the pin 3.

5.2.3 Motor Check Points

Table 5-3 shows the check points for each motor.

Meter reading

Outputs High at the home
position.
Outputs Low at other positions.
Outputs Low at the home position.
Outputs High at other positions.

Outputs Low when paper is
loaded.
Outputs High when there is no
paper loaded.
Outputs Low when the cartridge is
installed.
Outputs High when the cartridge is
not installed.
Outputs Low when the cartridge is
installed.
Outputs High when the cartridge is
not installed.

Sensor Connector

No.

CN11
(ASF/Pump motor)

CN12
(CR Motor)

CN13
(PF motor)

Table 5-3. Coil Resistance for Each Motor and Check procedure

Test pin No Test procedure

(Meter is set to Ω.)

1:ASFA
2:ASF-A
3:ASFB
4:ASF-B
1:CRA
2:CR-A
3:CRB
4:CR-B
1:PFA
2:PF-A
3:PFB
4:PF-B

Set one lead of the meter to the pin 1

and the other lead to the pin 3.

Set one lead of the meter to the pin 2

and the other lead to the pin 4.

Set one lead of the meter to the pin 1

and the other lead to the pin 3.

Set one lead of the meter to the pin 2

and the other lead to the pin 4.

Set one lead of the meter to the pin 1

and the other lead to the pin 3.

Set one lead of the meter to the pin 2

and the other lead to the pin 4.

9.3 Ω ± 10 %
(at 25 °C/one phase)

7.8 Ω ± 10 %
(at 25 °C/one phase)

5 Ω ± 10 %
(at 25 °C/one phase)

Meter reading

5-2

Rev. A

Troubleshooting

5.3 Repair and Replacement of the Unit Part

This section contains the flow charts which are used to is olate the faulty unit by following the flow chart
according to the problem caused during replacing or r epairing the unit. You are to identify the faulty unit
based on the primary symptom listed in Table 5-4. Refer to Section 5.4, 5.5 and 5.6 for the information on
the repair at the component level such as PSB/PSE and MAIN board and the printer mechanism.

Table 5-4. Symptoms and Corresponding Flow Charts

Symptom Cause Flow chart

The printer does not operate at all. No LED goes on.

LED goes on but the printer mechanism does

not operate at all.

CR moves abnormally. When the printer is powered on, the CR leaves

the home position and a fatal error is indicated.
(The printer makes no abnormal noise.)

When the printer is powered on, the CR motor

immediately starts rotating irregularly and a fatal
error is indicated.

When the printer is powered on, the CR does

not move at all.

The printer feeds paper abnormally.After power on sequence, the printer is in the

paper ejecting motion for about 10 seconds and
indicates the paper jam error.

If the load button is pressed or any paper

loading operation is activated after power on
sequence, the printer loads paper form the ASF
and then indicates the fatal error.

If the load button is pressed or any paper

loading operation is activated after power on
sequence, the fatal error is indicated.

Printing operation is abnormal. No image is printed.

Faulty printing result (dot missing, uneven

printing)
The control panel does not function
normally.

No LEDs on the control panel goes on.
Buttons on the control panel do not function

normally.

Power on button does not work.

1

2

3-1
3-2

4-1
4-2

5

Rev. A

5-3

EPSON Stylus

4

&2/25

800

 Flow Chart 1 : The printer does not operate at all.

Start

Is the AC voltage
correct?

YES

Is the fuse

F1 on the PSB/PSE

board in a good

condition ?

YES

Is the

voltage output

from the CN2 on the

PSB/PSE board

normal?

YES

Replace the MAIN
board.

NO

NO

NO

Apply correct
AC voltage.

Replace the fuse.

NO

Has the fuse
blown?

Replace the
PSB/PSE board.

YES

Is the broblem
corrected?

YES

End

NO

Check the motor and driver
circuits. Refer to the section
"Repair of the Printer Mechanism."

Figure 5-2. Flow Chart 1

5-

Rev. A

 Flow Chart 2 : CR moves abnormally.

Start

Troubleshooting

Does

the CR move

when the printer is

turned on?

YES

Does

abnormal

noise occur after

printer

abnormal

noise and fatal

error occur while

turning

printer?

Is the CR

lock lever released?

is turned

on?

Does

on the

the

YES

YES

NO

occurs when the

printer is turned

NO

NO

NO

CR leaves the

home position and

stops then the fatal

error occurs?

connector securly

connected to the

Is the

cap assembly in

an abnormal

condition?

Replace the cap
assembly or reinstall it.

Does the PF
motor rotate?

Fatal error

on.

Does the

YES

Is the

HP sensor

CN6?

YES

YES

NO

NO

NO

NO

Is the

operation

normal?

End

END

Connector cable

resistance of

the CR motor

coil

Connect the HP
sensor connector
cable to the CN6.

Is the

operation

normal?

NO

YES

Is the

CR motor

Connected to

the CN12?

YES

Is the

correct?

YES

YES

Release

the CR lock

with the printer

power

Does the

off.

smoothly?

Oil the CR or clean
the CR shaft.

NO

Connect the CR motor
connector cable to the
CN12 properly.

NO

lever

CR

movemanually

NO

Replace the CR
motor.

Are

there

foreign

objects

between

sensor

the

HP

terminals?

NO

Is HP

sensor normaly

functioning?

YES

Is the

operation

normal?

NO

Is the

operation

normal?

Replace the MAIN
board.

YES

Remove the foreign
objects.

NO

NO

Replace the HP
sensor.

NO

NO

Is the

operation

normal?

Is the

operation

normal?

YES

YES

YES

YES

Is the

PF

motor connector

cable securly

connected to the

CN13?

YES

Is the

resistance of the

PF motor coil

normal?

YES

Replace the MAIN
board.

Connect the connector
cable to the CN13.

NO

NO

Replace the PF
motor.

NO

Figure 5-3. Flow Chart 2

Is the

operation

normal?

Is the

operation

normal?

YES

YES

End

END

Replace the MAIN
board.

NO

End

END

Rev. A

5-5

EPSON Stylus

6

&2/25

800

 Flow Chart 3-1 : The printer feeds paper abnormally.

Start

Does

the PF roller

move when the

printer is turned on?

(CR lock is

released.)

YES

After the printer

power is turned on, the

printer repeats paper feeding

motion and indicates

the fatal error.

YES

Foreign objects are
lodged on the ASF
HP sensor.

YES

Remove the foreign objects.

Is the
operation
normal?

End

END

NO

YES

NO

NO

NO

connector cable

securely connected

resistance of the

Is the

ASF

HP sensor

functioning

properly?

YES

Is the

PF motor

to the

CN13?

YES

Is the

PF motor coil

normal?

YES

the

is turned

repeats paper

and

are lodged on the PF

sensor lever in the upper

Replace the MAIN
board.

NO

NO

NO

After

printer power

on, the printer

ejecting motion

indicates

the

fatal error.

YES

Foreign objects

paper guide

assembly.

NO

Is the

PE sensor

functioning

normally?

YES

Connect the connector cable
securly to the CN13.

NO

Replace the PF
motor.

Is the operation
normal?

NO

YES

NO

Replace the ASF
HP sensor.

NO

Remove the foreign objects.

NO

NO

Is the
operation
normal?

Is the operation
normal?

YES

NO

Replace the MAIN
board.

If the load button

is pressed or the printing

operation is activated, the

fatal error occurs.

YES

Continues to Figure 5-5 (A).

Is the
operation
normal?

Replace the PE
sensor.

Is the
operation
normal?

YES

YES

YES

End

END

Replace the MAIN board.

End

END

Figure 5-4. Flow Chart 3-1

5-

Rev. A