Epson PH890 Service Manual page 87

EPSON Stylus Photo 890/1290
C378PSB/PSE
Board
SHIELD PLATE, M/
Earth Plate
Figure 4-4. Circuit Board Removal
6. For removing each circuit board assembly from the M/B Shield Plate, remove the
screws securing each unit and shield plate.
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C393MAIN Board: Total 10 screws
7 screws: CBS (3x6)
3 screws: CP (3x6)
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C378PSB/PSE Board: Total 4 screws (CBS, 3x6)
DISASSEMBLY AND ASSEMBLY
CBS (3x6)
C393MAIN Board
Earth Plate
CP (3x6)
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C A U T I O N
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A D J U S T M E N T
R E Q U I R E D
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Note this part replacement is required since several counters stored
in the EEPROM are lost with a Main board replacement.
Disassembly Procedures
Since the CN10 is a locking connector, be sure to unlock it
before disconnecting the cables.
Since the head FFCs have the same number of pins, be sure to
connect them to the right connectors.
When connecting the cables, connect them to the correct
connectors paying attention to the number of the pins.
Be sure to perform the following adjustments when you replace
the Main Board:
1. Head ID input (Refer to Chapter 5.)
2. Bi-D adjustment (Refer to Chapter 5.)
3. USB ID input (Refer to Chapter 5.)
Be sure to replace the following parts when replacing the Main
Board:
1. Waste ink absorbers
2. Ink cartridge (BK & Color)
Revision B
87