Epson FX 890 Service Manual - Page 33

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FX-1180/FX-880 Service Manual Chapter 3 Troubleshooting Detector Connector Number HP Detector (CN4) Front PE Detector (CN6) Release Lever Detector (CN10) PG Detector (CN11) Printhead thermistor Table 3-4 Detector Test Point Test Method (Set Meter to Ohms. Check the Printer power off.) Place one lead on pin 1 and the other lead on pin 2, and toggle the detector actuator. Place one lead on pin 1 and the other lead on pin 2, and toggle the detector actuator. Place one lead on pin 1 and the other lead on pin 2, and toggle the detector actuator. Place one lead on pin 1 and the other lead on pin 2, and move the detector actuator from -0 to 6. Place one lead on pin T and the other lead on other pin T to check the resistance.(Refer to Fig.3-2.) Meter Reading Meter should toggle between open and short. (LOW: within CR Home position.) Meter should toggle between open and short. (HIGH: paper is installed in the printer.) Meter should toggle between open and short. (HIGH: Friction Feed mode.) Meter should toggle between open and short. (HIGH: PG -1 ~ 3.) Approx. 14KΩ (at 17°C) 3.1.2 Error As this printer checks its condition by itself at power-on, when it finds any trouble, it indicates it with error indication buzzer and LEDs. The error Indications and corresponding remedies are shown in the table below: Table 3-5. Error Indications Error LED Status Buzzer Cause Remedies Paper out error Paper Out: On Pause: On Release lever Pause: ON error Fatal error All LEDs : Blink *** -----  The printer fails to load paper. The release lever is set to a wrong position. The carriage unit gets into out of control or power supply voltage becomes incorrect. Set paper to the printer correctly. Set the release lever to the correct position. Turn off the printer once and turn it back on. Note: Symbols used in the table represent the following: "∗" : A beep sounds for approx. 100 ms with the interval of approx. 100ms. "-" : A beep sounds for approx. 500 ms with the interval of approx. 100ms. Rev. B 3-3

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FX-1180/FX-880 Service Manual
Chapter 3 Troubleshooting
Rev. B
3-3
Table 3-4 Detector Test Point
Detector Connector
Number
Test Method
(Set Meter to Ohms. Check the
Printer power off.)
Meter Reading
HP Detector
(CN4)
Place one lead on pin 1 and the
other lead on pin 2, and toggle the
detector actuator.
Meter should toggle between
open and short. (LOW: within
CR Home position.)
Front PE Detector
(CN6)
Place one lead on pin 1 and the
other lead on pin 2, and toggle the
detector actuator.
Meter should toggle between
open and short. (HIGH:
paper is installed in the
printer.)
Release Lever Detector
(CN10)
Place one lead on pin 1 and the
other lead on pin 2, and toggle the
detector actuator.
Meter should toggle between
open and short. (HIGH:
Friction Feed mode.)
PG Detector
(CN11)
Place one lead on pin 1 and the
other lead on pin 2, and move the
detector actuator from -0 to 6.
Meter should toggle between
open and short.
(HIGH: PG -1 ~ 3.)
Printhead thermistor
Place one lead on pin T and the
other lead on other pin T to check
the resistance.(Refer to Fig.3-2.)
Approx. 14K
Ω
(at 17
°
C)
3.1.2 Error
As this printer checks its condition by itself at power-on, when it finds any trouble, it indicates
it
with error indication buzzer and LEDs. The error Indications and corresponding remedies are
shown in the table below:
Table 3-5. Error Indications
Error
LED Status
Buzzer
Cause
Remedies
Paper out error
Paper Out:
Pause:
On
On
***
The printer fails to
load paper.
Set paper to the printer
correctly.
Release lever
error
Pause:
ON
-----
The release lever is
set to a wrong
position.
Set the release lever to
the correct position.
Fatal error
All LEDs :
Blink
The carriage unit gets
into out of control or
power supply voltage
becomes incorrect.
Turn off the printer
once and turn it back
on.
Note: Symbols used in the table represent
the following:
“ ”
:
A beep sounds for approx. 100 ms with the interval of approx. 100ms.
“-“
:
A
beep sounds for approx. 500 ms with the interval of approx. 100ms.