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Error1 DARK
Error2 PMT sens
Error3 PMT Temp. Alarm
Error4 LD Temp. Uncontrolled
Error5 Printer
Please Check Printer Paper
Error6 – 11
DARK count exceeded the limit.
Sensitivity of the photoreceiver ele-
ment dropped below the limit.
Temperature of the photoreceiver ele-
ment exceeded the limit.
Temperature of the laser source be-
came uncontrollable.
The printer paper roll or the lid is
wrongly positioned (see Page 15).
A system error occurred.
Turn off the power supply and contact
Kowa sales representative.
Turn off the power supply and contact
Kowa sales representative.
Turn off the power supply and contact
Kowa sales representative.
Turn off the power supply and contact
Kowa sales representative.
If the problem continues, turn off the
power supply and contact Kowa sales
representative.
Turn off the power supply and contact
Kowa sales representative.
Message Description Remedy
10. Troubleshooting
■
10-1 Phenomena and validation
In this section, we discuss what you can do when you encounter a problem. When a problem occurs, check the items shown
below first. If none of the items is the case or if the specified remedy solve your problem, please contact your Kowa dealer
where you have purchased the instrument.
Situation Phenomena Validation (possible cause) Remedy
Alignment
Measurement
mode
Measurement
data
Print
The display does not show the
patient’s eye (Frontal alignment
screen).
The display does not show the
patient’s eye (Diagonal alignment
screen).
The display is whitened and the
luminous dot for alignment does
not appear.
No measurement is started (Mea-
suring window does not turn to
green).
No measurement is started (alarm
is emitted).
Data can not be saved.
BG value and BG% are too high.
There are excessive variations in
collected data.
Nothing is printed out.
Nothing is printed out.
Vertical level and the position of the
eye are not aligned with those of the
device.
The position of the eye not aligned
with the device.
No light shade is used in a well-
lighted room.
The ratio of BG1 to BG2 is not good.
“Yes” is selected for the setting of BG
error check.
Excessive light is detected blocking
a measurement.
Flare value is zero (0). “Store” but-
ton is not selected.
The target point is not good. The
room is well-lighted.
The target point is not good.
Any printer is not selected for Out-
put mode.
No printer paper left.
Pull back Base segment and perform Ocu-
lar height adjustment again (see “
■
6-2
Ocular height adjustment” on Page 19)ask
the patient to sit in front of the device.
Align the position again using Fron-
tal alignment screen.
Settings of the display are incorrect.
Use a light shade. Adjust settings of
the display correctly. Darken the
room.
Change the target point.
Change the settings:
•
Change the laser position
.
•
Change BG level
.
• Select “No” for BG error check.
Change the target point.
Perform measurement again.
Change the target point.
Darken the room or use a light
shade.
Perform an additional measurement and
perform a test.
Select “PRN” or “PRN + EXIT” for
the output setting.
Replace with a new printer paper
roll.
■
10-2 Error messages
This section describes error messages that appear when a device malfunction occurs.