Epson Stylus COLOR 900 Service Manual page 75

EPSON Stylus COLOR 900/900N
Table 3-10. Remedies for Ink Out Error (continued)
Step Problem
3 Is the micro switch
attached securely?
Is the connector (green)
disconnected?
4 Is the connector (green,
3-pin) disconnected from
the small board located
at the bottom of the
printhead?
5 Is the micro switch
defective?
Solution
If the micro switch is not properly attached, the
actuators may fail to touch the micro switch.
Therefore, check that the micro switch is
securely attached to the carriage by the hooks.
Remove the printhead and check if the connector
(green, 3-pin) is disconnected from the small
board at the bottom of the printhead.
Note: The green 4-pin connector is irrelevant (it
is for the encoder).
1. Keeping the left micro switch pressed down,
place the meter's probes on the middle and
left pins to check for electrical continuity.
2. Keeping the right micro switch pressed down,
place the meter's probes on the middle and
right pins to check for electrical continuity.
Table 3-11. Remedies for Ink Out Error (continued)
Step Problem
6 Is data in the EEPROM If the address for the ink consumption information
corrupted? in the EEPROM is corrupted and the printer shows
the Ink Out error constantly, the printer sets the
interface signal "BUSY" to High and stops
communication with any other peripheral devices.
Therefore, replace the ink cartridges with new ones
to overwrite the address with 00H.
7 Did you replace the See
printhead? the Printhead"
8 Did the printer If the printhead is driven with reduced ink flow (as
overheat? when the nozzles are clogged), heat builds up and
may damage the printhead. When the printer
detects excessive heat, it may stop printing and
display the Ink Out error. This occurs only after the
sequence described below:
1. Abnormal temperature detected during printing.
2. Printer stops printing and begins head cleaning.
3. Printer resumes printing.
4. Printer detects an abnormal rise in the head
This usually happens only if:
• Ink around the nozzles is very thick (due to
• Ink has been dislodged from the surface of the
Replace the ink cartridges to recover printer
operation.
Chapter 3 Troubleshooting
Solution
"Ink Out Error Occurs After You Replace
on page 82.
(This operation solves the nozzle clogging
problem in most cases.)
temperature again, sets the Initial Ink Charge
flag, and displays the Ink Out error.
removal and reinstallation of the I/C).
printhead by a strong jolt.
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