Epson Stylus Color 670, Service Manual

Page: 54 / 152

EPSON Stylus COLOR 670 Revision A
Troubleshooting Unit Level Troubleshooting 54
3.2 Unit Level Troubleshooting
You can identify the troubles, using flowcharts in this section and then find
defective unit. When you find out defective unit, refer to “Unit Repair (Printer
Mechanism)” to find defective components and replace them.
Table 3-3. LED Indicators
Condition
LED Indication
Remedy
Power
Paper
Check
Ink End
(Black)
Ink End
(Color)
No Paper -- On -- -- Set paper
Paper Jam -- Blink Off Off Remove jammed paper
Ink End /
No Cartridge
(black)
-- -- On --
Close the cartridge
cover properly or
replace the ink
cartridge with new
one.
Ink End /
No Cartridge
(color)
-- -- -- On
Close the cartridge
cover properly or
replace the ink
cartridge with new
one.
Ink Low
(black)
-- -- Blink --
Replace he ink
cartridge with new
one.
Ink Low
(color)
-- -- -- Blink
Replace he ink
cartridge with new
one.
Maintenance
Request
Blink Blink Blink Blink
Replace the waste ink
pad and reset the
waste ink counter
stored in EEPROM.
Fatal Error Blink Blink On On
Turn off and back on
the printer. If the
problem still remains,
repair the related units.
Table 3-4. Top-Level Troubleshooting
Symptom Problem Flowchart No.
Printer does not operate
at power on.
LEDs do not light.
Printer mechanism does not
operate.
Flowchart 3-1
Error is detected Error is indicated by LED indication. Flowchart 3-2
Failure occurs during
printing.
Printing is not performed.
Abnormal printing (dot missing, etc.)
Print quality is poor.
Flowchart 3-3
Printer does not feed
paper correctly.
No paper is fed.
Paper feed is irregular.
Paper jam occurs.
Flowchart 3-4
Control panel operation
is abnormal.
No response to button access. Flowchart 3-5