Printhead - Epson FX-880 Service Manual

Troubleshooting

Printhead

You can check for an open circuit in the printhead's solenoid coils by using a multimeter and the table
below. Note that the test pin numbers shown in Figure 5-2 match the individual printhead solenoids (dot
wires).
Remove the printhead by following the instructions in Chapter 3. Be sure to perform the platen gap
adjustment after replacing or re-installing the printhead.
Common Pin
Number
C1
C2
C3
C4
C5
2
6
C1 C2
5-4
Table 5-6. Printhead Solenoid Resistance Test Points
Test Pin Number Test Method
1, 4 Place one lead on pin C1 and the other
pin on pin 1 to test solenoid 1.
Place one lead on pin C1 and the other
lead on pin 4 to test solenoid 4.
8 Place one lead on pin C2 and the other
pin on pin 8 to test solenoid 8.
2, 6 Place one lead on pin C3 and the other
pin on pin 2 to test solenoid 2.
Place one lead on pin C3 and the other
lead on pin 6 to test solenoid 6.
5, 9 Place one lead on pin C4 and the other
pin on pin 5 to test solenoid 5.
Place one lead on pin C4 and the other
lead on pin 9 to test solenoid 9.
3, 7 Place one lead on pin C5 and the other
pin on pin 3 to test solenoid 3.
Place one lead on pin C5 and the other
lead on pin 7 to test solenoid 7.
Printhead Connector
C3 C4
8 C5 1
T
T
3
9 7 5
4
View A
Printhead Connector
Figure 5-2. Printhead Connector Pin Alignment
Printhead
A
EPSON FX-880/FX-1180 Service Manual
Specifications
8.19 0.8
at 77 F (25 C)
8.19 0.8
at 77 F (25 C)
8.19 0.8
at 77 F (25 C)
8.19 0.8
at 77 F (25 C)
8.19 0.8
at 77 F (25 C)