Epson Stylus COLOR 880 Service Manual page 66

EPSON Stylus COLOR 880
Table 3-9. Remedies for Fatal Error (continued)
Step Detail Phenomenon
• Check for the correct waveform at 5 pins of FFC.
5 When the Printer is
The PF Motor Encorder Sensor FFC is connected
turned on, the CR
to CN12 on the C378 Main Board. Check that both
move a little and the
connectors Pin 1 & 4 or Pin 1& 2.
PF motor also moves
little.
After that, the Panel
LED indicates the
Fatal Error.
• Check for the correct wavehorm at 21pins of Head
FFC. The Head FFC is connected to CN8 on the
C378 Main Board. Check that both connectors Pin
2 & GND or Pin 4& GND.
6 When the Printer is Since the CR motor is DC motor, measure the coil
turned on, the CR resistance using the tester as following figure
motor dose not move <Resistance: 31.1
at all. (PF motor
moves.)
After that, the Panel
LED indicates the
Fatal Error
Troubleshooting
Check & Actions
Ω ±
25%>
CR Motor
Overview
Table 3-9. Remedies for Fatal Error (continued)
Step Detail Phenomenon
7 When the Printer is Since the PF motor is DC motor, measure the coil
turned on, the PF resistance using the tester as following figure
motor dose not <Resistance: 47.6
move.
After that, the Panel
LED indicates the
Fatal Error.
8 When the Printer is Since the Pump/ASF motor is controlled by the
turned on, it dose not Bipolar system, measure the coil resistance using the
sound the ASF tester as shown below.
Hopper moving.
<Resistance: 10.4
After that, the Panel
Note: Be
LED indicates the
sure to
Fatal Error
measure the
resistance at
two points
shown in the
figure below.
Revision A
Check & Actions
Ω ±
25%>
PF Motor
Ω ±
10%>
ASF/Pump
Motor
66