Epson Stylus Photo Service Manual 5

Page 1
Chapter 5
Troubleshooting
5.1 Troubleshooting....................................................................................................5-1
5.2 Unit Level Troubleshooting .................................................................................5-3
5.2.1 Printer does not operate at power on................................................................................... 5-4
5.2.2 Error is detected.....................................................................................................................5-5
5.2.3 Failure occurs during printing .............................................................................................. 5-6
5.2.4 Printer does not feed the paper correctly............................................................................5-7
5.2.5 Control panel operation is abnormal.................................................................................... 5-8
5.3 Unit Repair C206 PSB/PSE Board.......................................................................5-9
5.3.1 Unit Repair - C209 MAIN Board........................................................................................... 5-11
5.4 Repair of the Printer Mechanism.......................................................................5-13
Page 2
EPSON Stylus Photo
5.1 Troubleshooting
The printer may exhibit different symptoms for the same problem, which makes troubleshooting more difficult. This section, however, provides simple and effective ways to facilitate troubleshooting. The following flowchart illustrates the main steps of the troubleshooting process.
START
Unit Level Troubleshooting
Unit Repair (C206 PSB/PSE)
Unit Repair (C209 Main)
Disassembly and Adjustment
END
Unit Repair Printer Mechanism
Figure 5-1. Troubleshooting Process Flowchart
Table 5-1. Motor Resistance and Measurement Procedure
Motor Name Location Check Point No.* Meter Reading
CR Motor Assembly
PF(Pump) Motor
Assembly
Note*)
Set the Multi-meter for measuring resistance range.
CN6(C209 MAIN) 1 & 3pin or,
2 & 4pin
CN7(C209 MAIN) 1 & 3pin or,
2 & 4pin
7.8 Ohms ±10% (25 °C)
7.8 Ohms ±10% (25 °C)
Make sure the power is off and remove the motor connectors from the main board.
Table 5-2. Sensor Check
Sensor Name Check Point Signal Level Sensor Status
Paper end sensor CN4 / 1-pin, H (5V) No paper
L (GND) Paper in
Carriage home
CN5 / 1-pin, H (5V) Home position position sensor (HP sensor) L (GND) Out of home position ASF phase Sensor CN11 / 1-pin, H (5V) Friction(paper feeding) position
L (GND) Release(waiting) position
Black cartridge
CN8 / 1-pin, H (5V) Black ink cartridge out sensor
L (GND) Black ink cartridge exists
Color cartridge sensor CN8 / 2-pin, H (5V) Color ink cartridge out
L (GND) Color ink cartridge exists
Thermistor CN8 / 3-pin, Resistance value It changes according to the
peripheral temperature. (10KOhms ±1% at 25°C)
Rev. A
5-1
Page 3
Chapter 5 Troubleshooting
Table 5-3. Printer Condition and Panel Status
Indicators
Error status
Power Ink Out
(Black)
Paper Out --- --- --- On Load paper then press Paper jam condition --- Off Off Blink Eliminate a paper then press No Ink cartridge or Ink
end(black) No Ink cartridge or Ink
end(color) Ink low (Black) --- Blink --- --- ---
Ink low (Color) --- --- Blink --- --­Maintenance error Blink Blink Blink Blink Change the waste ink absorber
Fatal error Blink On On Blink Turn off the printer and turn it
--- On --- --- Install a new black ink cartridge
--- --- On --- Install a new color ink cartridge
Ink Out
(Color)
Paper Out
load/eject button. load/eject button. according to ink cartridge
exchange operation. according to ink cartridge
exchange operation.
and reset the protect counter. on again. If the printer can not
recover, repair the suitable part.
Recovery
5-2
Rev.A
Page 4
EPSON Stylus Photo
5.2 Unit Level Troubleshooting
When a problem occurs, you can identify the defective unit according to the symptoms exhibited. The table below lists the symptoms of certain problems. Once the problem is identified, refer to the flowchart that corresponds to the problem.
Table 5-4. Symptom and Problem
Symptom Problem Flowchart No.
Printer does not operate at power on
Error is detected Failure occurs during printing
Printer does not feed the paper correctly
Control panel operation is abnormal
LEDs do not light up.
Printer mechanism does not operate.
Error is indicated by LED indication.
Printing is not performed.
Abnormal printing(missing dot, etc.)
Print quality is poor
No paper is fed.
Paper feed is irregular.
Paper jam occurs.
No response to button access.
1
2 3
4
5
Rev. A
5-3
Page 5
Chapter 5 Troubleshooting
5.2.1 Printer does not operate at power on
START
Is AC power voltage normal?
YES
Is the
fuse(F1) of
power supply
board
opened?
NO
Check output voltage of CN2 in the power supply board.
Is the
output voltage
of power supply
normal?
YES
Exchange the main board.
NO
NO
YES
Input normal power supply.
Exchange the fuse. Disconnect CN10 in the main board and turn the power on again.
NO
Is the
fuse opend
again?
YES
Exchange the power supply board
Check the motor and head. Refer to the repair item of the printer mechanism.
END
Figure 5-2. Flow Chart 1
5-4
Rev.A
Page 6
EPSON Stylus Photo
5.2.2 Error is detected
START
Check the error message.(Refer to Table5-3)
Is it carriage error?
NO
No ink cartridge error?
NO
Maintenance Error
Exchange the waste ink absorber and reset the counter. (Refer to 1.4.2)
Check ink cartridge sensor and exchange the head if it's ubnormal.
Yes
Yes
Turn off the printer, and move the carriage by hand.
Exchange the ink­cartridge with new one.
Yes
Does error appear again?
NO
Does the carriage move smoothly?
Yes
Check CR motor. Exchange the main board if there is no problem.
Yes
Is the problem solved?
NO
Refer to 5.4 Repair of the printer mechanism.
NO
Rev. A
END
Figure 5-3. Flow Chart 2
END
5-5
Page 7
Chapter 5 Troubleshooting
5.2.3 Failure occurs during printing
START
Perform self­test printing
Is printing
carried out O.K?
YES
Is printing
quality normal?
NO
Perform cleaning
NO
Perform printing adjustment.
YES
(Refer to Chapter4)
Is all
cables connected
to the main board?
NO
Connect cables
YES
problem solved?
YES
Is the
END
Exchange the ink cartridge with new one and perform
NO
self-test.
Is the
problem
YES
YES
solved?
NO
Refer to 5.4 Repair of the printer-mechanism.
Is the problem solved?
NO
END
Is the
problem solved?
YES
Replace the Main board
Refer to 5.4 Repair of the printer-mechanism.
NO
Is the
problem
NO
solved?
END
YES
5-6
Figure 5-4.Flow Chart 3
Rev.A
Page 8
EPSON Stylus Photo
5.2.4 Printer does not feed the paper correctly
START
Are
papers set in the ASF correctly?
YES
NO
Set the paper correctly
Does
the PF roller
and platen
rotate?
YES
Remove any obstruction in the paper path if there is any.
Perform cleaning for the roller of paper path.
Is the
problem solved?
YES
NO
NO
Is the PF motor running?
YES
Refer to 5.4.Repair of the printer mechanism.
NO
Check the PF motor. If there is no problem, replace the main board.
Rev. A
END
END
Figure 5-5. Flow Chart 4
5-7
Page 9
Chapter 5 Troubleshooting
5.2.5 Control panel operation i s abnor mal
START
Is the
control panel
connected correctly?
NO
YES
Replace the control panel.
Is the problem solved?
YES
Connect the control panel correctly.
Is the problem solved?
YES
NO
NO
Replace the main board.
5-8
END
Figure 5-6. Flow Chart 5
END
Rev.A
Page 10
EPSON Stylus Photo
5.3 Unit Repair C206 PSB/PSE Board
This section describes the problems related to the power supply board(C206 PSB/PSE). The table below provides various symptoms, likely causes, and checkpoints. The checkpoints refer to waveforms, resistance, and other values to be checked to evaluate the operation of each component.
Table 5-5. C206PS B Power Supply Borad
Symptom Condition Cause Checkpoint Solution
The printer does not operate at all.
+42V line is dead.
F1 is open. Check F1 by using a
tester.
Replace F1.
Transformer coils are open.
Switching FET (Q1) is dead.
Feed back transistor(Q2, Q3) are dead.
+42 V line is abnormal.
Check the waveform at the drain of Q1.
Check drain side. Replace Q1.
Check corrector side.
Check following parts.
ZD87,ZD83
ZD51,ZD81•`ZD86
PC1
Replace T1.
Replace Q2 or Q3.
Replace suitable parts.
Rev. A
5-9
Page 11
Chapter 5 Troubleshooting
Table 5-6. C206PSB Power Supply Board (Continued)
Symptom Condition Cause Checkpoint Solution
+5V line is dead.
IC51 (L4962E) is dead.
Check the oscillation(5
-pin) and switching (7­pin) waveform of IC51. (5-pin)
(7-pin)
Replace IC51.
5-10
Rev.A
Page 12
EPSON Stylus Photo
5.3.1 Unit Repair C209 MAIN Board
This section describes the problems related to the main controller board(C209 MAIN). The table below provides various symptoms, likely causes, and checkpoints. The check points refer to waveforms, resistance, and other values to be checked to evaluate the operation of each component.
Table 5-7. Repair of the C209 MAIN Board
Symptom Condition Cause Checkpoint Solution
The printer does not operate at all.
CPU does not operate.
The reset circuit is defective.
Check the waveform of the +5V and /Reset signal (IC8=5,1-pin)
Replace IC8
The carriage does not operate normally.
Carriage motor does not operate at all.
Control ROM is not selected correctly or it’s dead. RAM is defective. CPU is defective.
IC2 is defective. Check the signal
Check if the signal waveform at 11 pin of the IC3 can be reversed High or Low.
Check the clock waveform at 27 or 28-pin of IC1.
waveform at 1, 2, 23 and 24 pin of IC14.
Replace IC3.
Replace RAM. Replace IC1 if
the oscillation waveform is normal, if it is abnormal, replace the oscillator CR1.
Replace IC2.
Rev. A
IC14 is defective.
Check the signal waveform at 3, 6,or 18, 21 pin of IC14.
Replace IC14.
5-11
Page 13
Chapter 5 Troubleshooting
Table 5-8.Repair of the C209 MAIN Board (Continued)
Symptom Condition Cause Checkpoint Solution
Printing is abnormal
Printing is not executed or, black specks or dots appears on the printing.
IC2 is defective. Check the output
waveform at 7, 9 and 11 pin of CN8.
Replace IC2.
Paper feed operation is abnormal.
Paper feed motor does not work.
IC2 is defective. Check the output
waveform of at 1, 2pin and 23, 24 pin of IC15.
IC15 is defective. Check the output
waveform of at 3, 6 pin or 18, 21 pin of IC15.
Replace IC2
Replace IC15
5-12
Rev.A
Page 14
EPSON Stylus Photo
5.4 Repair of the Printer Mechanism
This section provides instruction for repairing the printer mechanism. It describes various problems, symptom, likely causes, checkpoints, and solutions. Select appropriate symptom from the table and check each parts and its function as described in the checkpoint.
Table 5-9. Repair of the Printer Mechanism
Symptom Condition Cause Checkpoint Solution
Abnormal pump mechanism operation
Ink is not absorbed or is poorly absorbed.
Abnormal carriage operation.
Printing is not performed.
Abnormal PF motor operation when the power is turned on.
Used ink does not go through the waste ink tube.
Abnormal carriage operation at power on.
Abnormal carriage operation during printing.
The carriage moves, but no printing is performed.
Foreign substances are loaded in the PF gears.
The PF motor is defective. (Refer to Table5-1)
The pump tube is crashed.
Capping rubber is damaged or deformed. The tube is out of the cap. Pump bulb is not closed at absorption. Foreign substance in the CR drive gear. CR motor is defective.
Carriage movement is not smooth.
Head FFC is out of connection.
The FFC is disconnected inside. I/C is defective. Install a new I/C and
Head unit is defective.
Manually drive the PF drive gear and check if it rotates normally .
Check the inner coil resistance and see if there is any disconnection of the coil. Check the tube visually.
Check the capping rubber visually.
Check if the tube is out of the cap visually. Check the bulb operation visually.
Check visually if there is any substances or not. Check the inner coil resistance and see if there is any disconnection of the coil. Check whether the carriage moves smoothly when moved manually. Check tension of the timing belt.
Check if there is any foreign substances in the carriage path. Check if the head FFC on the board or carriage is connected surely. Check the FFC by using a tester.
perform the self-test. If the condition does not improve even after 2or 3 times cleaning operation, replace the head unit and perform the self-test.
Remove any foreign objects.
Exchange the PF motor.
Fix the crashed part by the airgun.
Replace the cap mechanism.
Connect the tube properly. Replace the cap mechanism.
Remove any foreign substances.
Replace the CR motor.
Clean and lubricate the carriage guide axis.
Adjust tension mechanism or exchange it. Remove any foreign substances.
Connect the FFC properly.
Replace the FFC.
Replace I/C. Replace the head
unit.
Rev. A
5-13
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Chapter 5 Troubleshooting
Table 5-10. Repair of the Printer Mechanism (Continued.)
Symptom Condition Cause Check-point Solution
Abnormal printing Only a particular dot
causes abnormal printing.
A dot is not printed occasionally.
Black specks or dots.
A vertical line is not aligned.
White line appears in the image data.
Print head surface is not clean. (dot missing)
The head unit is defective.
Absorber in the cap is touching the head surface. Print head surface is not clean. (dot-missing)
The head FFC is disconnected inside. The head FFC is out of connection.
The head unit is detective.
I/C is defective. Install the new I/C
The head FFC is out of connection.
The head unit is detective.
Bi-directional alignment is not adjusted. Head angle is not correct. Paper feed assembly adjustment is not correct.
Perform the cleaning operation several times and check printing. Perform the cleaning operation several times and check printing. Check the absorber in the cap visually.
Perform the cleaning operation several times and check printing. Check the FFC by using a tester. Check if the head FFC on the board or carriage is connected surely. Perform the cleaning operation several times and check printing.
and perform self­test. Check if the head FFC on the board or carriage is connected surely. Check connection with the head FFC.
Perform Bi-D adjustment.
Perform head angle adjustment. Perform paper feed assembly adjustment
Perform the cleaning.
If condition does not improve even after the cleaning, replace the head. Replace the absorber in the cap if it is deformed. Perform the cleaning.
Replace the head FFC. Connect the FFC properly.
If condition does not improve even after the cleaning, replace the head. Replace I/C.
Connect the FFC properly.
Replace the head if there is no connection problem with the FFC. Refer to Chapter4.
Refer to Chapter4. Refer to Chapter4.
5-14
Dot shooting direction is tilted because head surface is not clean I/C is defective. Install a new I/C and
Head unit is defective.
Perform the cleaning operation several times and check printing.
perform the self-test. Perform the cleaning operation several times and check printing.
Perform the cleaning operation.
Replace I/C. Replace the head
unit.
Rev.A
Page 16
EPSON Stylus Photo
Table 5-11. Repair of the Printer Mechanism (Continued)
Symptom Condition Causes Checkpoint Solution
Abnormal paper feeding.
Printer stops during initialization.
Paper is not fed. Friction of the PF
roller.
Abnormal operation of the hopper.
Malfunction of ASF drive change-over.
Printing start point is not right.
Fatal error appears. ASF sensor is
Friction of the PF roller.
defective.
PE sensor is defective.
HP sensor is defective.
Head FFC is disconnected.
Check if the PF roller rotates when paper is not fed.
Check movement of the ASF hopper visually. Check if the ASF gear rotates visually.
Check if the PF roller slips during paper feeding.
Check the signal level of the ASF sensor.(Refer to Table 5-2) Check the signal level of the PE sensor.(Refer to Table 5-2) Check the signal level of the HP sensor .(Refer to Table 5-2.) Check if the head FFC is connected.
Clean the PF roller by the cleaning sheet. Replace the PF roller if it does not recover. Replace ASF.
Replace gears of the ASF drive change-over. Clean the PF roller by the cleaning sheet. Replace the PF roller if it does not recover. Replace ASF sensor.
Replace PE sensor.
Connect the head FFC.
CR motor is defective.
PF motor is defective.
Check the CR motor cable is connected.
Check if the PF motor cable is connected.
Replace the CR motor if there is no problem in the cable connection. Replace the PF motor if there is no problem in the cable connection.
Rev. A
5-15
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