Epson Stylus PHOTO 950 Service Manual page 58

EPSON Stylus PHOTO 950
Table 3-5. Relationship between Error Indication and Presumption Cause
No. Error status
3 Paper Jam 16.The paper back lever has come off and fallen down, and
the paper back function does not work.
(Cont.) (Refer to Section
3.1.4.1) 17.The projection on the ASF rib for inserting the paper
back lever is broken, and the paper back lever falls off
as soon as it is reinstalled.
18.The spring that applies tension to the paper return lever
has come off and fallen down.
19.One or more of the four points that secure and control
the hopper drive shaft have become loose, and the
hopper cannot operate according to control instructions.
20.Malfunction of the PE sensor.
21.Paper that is outside specifications or that is longer than
the currently-set paper size is being used.
NOTE:If paper out, double feed or a paper jam is detected,
4 Ink end or 1. The cartridge is not correctly inserted, and the cartridge
cannot be correctly detected.
ink cartridge out
(Refer to Section 2. The CSIC chip is not connected correctly, or it is
completely disconnected and communication with the
3.1.4.2)
main unit is not possible.
3. The contact electrodes of the carriage CSIC chip are
broken or bent.
4. The FFC is disconnected from connector CN1 on the
circuit board underneath the carriage, or when you try to
push it in it feels as if it can go in further.
5. Connector CN9 on the main board is disconnected or
nearly disconnected.
6. A heat hot error has occurred.
7. The actual amount of ink remaining and the remaining
ink data recorded in the CSIC EEPROM are mismatched
as a result of a refilling operation.
8. The data in the CSIC EEPROM is corrupted.
TROUBLESHOOTING
Probable cause
they may all occur for the any of the above reasons,
and so the reasons are listed all together without
being separately classified.
Table 3-5. Relationship between Error Indication and Presumption Cause
No. Error status
5 Ink Low Indication
(Refer to Section
3.1.4.3)
6 Maintenance Error
(Refer to Section
3.1.4.4)
7 Fatal error
(Refer to Section
3.1.4.5)
8 Adjust Lever Error
(Refer to Section
3.1.4.6)
Overview
Probable cause
• Ink end detection is carried out for both black & white and
color printing.
• When the amount of ink remaining is becoming low, the
indicator illuminates. When a set amount of ink is then used
up from that point, an ink end error is displayed and
printing stops. An error is indicated when one color runs
out.
1. In addition, no error status is indicated, but an ink low
indication continually appears while the carriage is
returning to the home position even though the I/ C has
been replaced with a new I/ C.
(Example of actual question from the marketplace)
Ink overflow request always appears.
1. The linear scale is not moving in between the photo
sensor (photo coupler) parts on the underside of the
carriage.
2. The FFC for transmitting the carriage photo sensor
detection signal to the main board is disconnected or
almost disconnected from the relay board on the
underside of the carriage.
3. The rotary scale is not moving in between the PF
encoder (photo coupler) parts.
4. CN6 (white: 2-pin) on the main board is disconnected.
5. CN9 on the main board is disconnected or almost
disconnected.
6. The coil inside the CR motor has seized.
7. The coil inside the PF motor has seized.
8. The coil inside the Pump motor has seized.
9. Malfunction of motor driver IC
10.Malfunction of PF motor photo sensor
11.Malfunction of CR motor photo sensor
1. Adjust lever position is incorrect.
2. Connector CN13 (yellow: 2-pin) of main circuit board or
sensor connector is disconnected.
3. Sensor or actuator is malfunctioning.
4. Problem with release sensor.
Revision A
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