Epson Stylus Color C70, Service Manual

Page: 65 / 216

EPSON Stylus COLOR C70/C80 Revision A
Troubleshooting Overview 65
3
(Cont.)
Paper Jam
(Refer to Section
3.1.4.1)
16.The paper back lever has come off and fallen down, and
the paper back function does not work.
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,
they may all occur for the any of the above reasons,
and so the reasons are listed all together without
being separately classified.
4 Ink end or ink
cartridge out
(Refer to Section
3.1.4.2)
1. The cartridge is not correctly inserted, and the cartridge
cannot be correctly detected.
2. The CSIC chip is not connected correctly, or it is
completely disconnected and communication with the
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 CN8 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.
5 Ink Low Indication
(Refer to Section
3.1.4.3)
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)
Table 3-5. Relationship between Error Indication and Presumption Cause
No. Error status Probable cause
6 Maintenance Error
(Refer to Section
3.1.4.4) Ink overflow request always appears.
7 Fatal error
(Refer to Section
3.1.4.5)
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. CN12 (white: 4-pin) on the main board is disconnected.
5. CN8 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. Malfunction of motor driver IC
9. Malfunction of PF motor photo sensor
10.Malfunction of CR motor photo sensor
Table 3-5. Relationship between Error Indication and Presumption Cause
No. Error status Probable cause