Epson Stylus Pro 7700 Service Manual page 402

Epson Stylus Pro 7700/7710/7700M/7710M/7900/7910/9700/9710/9900/9910/WT7900/WT7910/9890/9908/7890/7908
7. Turn each valve of the Ink Leak Measurement Jig as follows:
Valve No.1: Closed
Valve No.2: Open
Valve No.3: Open
8. Press the power button of the Pressure Gauge.
9. Confirm the value on the Pressure Gauge is 0.0 kPa. Otherwise, restart the
Pressure Gauge.
10. Close the Valve No.3, and pull the Syringe.
11. Open the Valve No.1, and push the Syringe.
12. Confirm the value on the Pressure Gauge is within 30 kPa to 48 kPa. Otherwise,
repeat pulling/pushing the Syringe.
13. Close the Valve No.2.
14. Record the value displayed on the Pressure Gauge and wait for approx. three
minutes.
15. After three minutes passes, check the value on the Pressure Gauge, and compare it
with the recorded value.
Difference is within 0.4 kPa: No problem. Go to
Difference is more than 0.5 kPa: Air may leak. Check the joints of dampers
for the connection status, and start the check again from
16. After the difference of the values falls within 0.4 kPa, open the valve No.3 to
depressurize the jig.
17. After confirming the value on the Pressure Gauge is 0.0 kPa, remove the INK
LEAK CHECK CARTRIDGE from the Ink Cartridge slot of the printer.
18. Repeat the procedure above for all the Ink Cartridge slots to check.
19. After checking all the Ink Cartridge slots to check, press the power button of the
Pressure Gauge for about 4 to 5 seconds to turn off the printer.
20. Close the valves No.1, No.2, and No.3 to complete the operation.
ADJUSTMENT
Step 16.
Step 7.
Head Related Adjustments
<Part Names>
The battery can be replaced
Valve No.3
Valve No.2
Valve No.1
<Valve Status>
Open
Figure 5-63. Operation of the Ink Leak Measurement Jig
Revision I
Pressure Gauge (GC66)
from the hole on the rear.
Power button
Syringe
Closed
402
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