Epson Stylus PHOTO 950 Service Manual page 70

EPSON Stylus PHOTO 950
3.1.4.4 Remedies for the Maintenance Error
If a maintenance error momentarily occurs, operation of the printer will not be
possible. Because this is an error which occurs because the amount of ink discharged
up until this time is close to the total absorption capacity of the ink pad, if operation
continues past this point, there is the danger that the waste ink in the lower case may
leak out. Because the adjustment program supports IEEE 1284.4, it includes a function
for forcibly clearing this error. Accordingly, either a special panel operation at the
printer or a reset operation using the adjustment software can be used to clear this
maintenance error.
Table 3-9. Countermeasures when a maintenance error occurs
Step Actions
1 Turn the printer on with the Roll Paper
SW and Paper SW pressed.
2 Momentarily release the roll paper
switch, and then press and hold the switch
again for 10 seconds. When the printer
checks the maintenance error function,
the front LEDs will light for 2 seconds,
and the printer will then change to
standby mode.
NOTE: Once the maintenance error has been cleared, the waste ink drain pad
must be replaced. If it is not replaced, ink may leak out while the
customer is using the printer.
NOTE: During the Step 2, if the Paper button is pressed, the Maintenance Error
is not cleared but the EEPROM initialization mode is activated instead.
The EEPROM initialization can be used to recover from conditions such
as the printer does not accept any data from the PC. The EEPROM
initialization mode initializes the following items:
TROUBLESHOOTING
Correct LED condition
Paper and Ink indicators will flash for
3 seconds. Step 2 must be started
during this time.
Check that the two LEDs light for 2
seconds and then turn off.
Overview
Accumulated power-off time:
The value for the Timer IC is reset.
Timer CL:
This is also called the firing standby counter. Its purpose is to prevent current from
being supplied to the head for a set period of time with the aim of reducing the
number of minute air bubbles near the surface of the head after the cleaning
operation has been carried out
I/F selection:
Selects "Auto", the factory default, from 4 I/F selection items: Auto, Parallel,
Serial, and Option.
Revision A
70