Kowa K9L48B, Service Manual, Page: 51 / 60

GG-09001 Edition 1.3
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５１
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Irregularity Check item Remedy
TV monitor does not
work.
Mydriatic Color or FA Mode is selected. Switch to Non-mydriatic Mode.
Picture angle knob is fixed in incorrect
position.
Switch the picture angle knob to 50°.
Observation lamp is turned OFF.
Make sure the observation lamp turned
ON.
Does “EXT button” on the operation
panel glow? Push “EXT button” and check that the
button does not glow.
Is it able to display the image, which
inputting from “VIDEO” port on power
supply unit, on LCD monitor?
Failure of the CCD unit is suspected, in the
case of being able to display the image,
which from “VIDEO” port, on LCD monitor
by pushing “EXT button”.
Failure of the LCD monitor unit is
suspected, in the case of being not able to
display the image, which from “VIDEO”
port, on LCD monitor by pushing “EXT
button”
Nothing appears through
the finder.
Non-mydriatic Mode is selected.
Switch to Mydriatic Color Mode or FA
Mode.
TV Monitoring Mode is selected. Turn off the TV Monitoring switch.
Picture angle knob is fixed in incorrect
position.
Switch the picture angle knob to 50°.
External fixation lamp
does not light up.
“Posterior pole imaging” or “Optic disk
imaging” is selected.
Select “External fixation lamp”.
Improperly fixed. Fasten by hand the external fixation lamp.
Pin jack is pulled off from the bottom of
the chin rest.
Fully insert the pin jack.
No timer counting sound
is heard. “Timer counting sound” is disabled by
the dipswitch. Enable “Timer counting sound”. Refer to
“10-1 List of Dipswitches”.
Luminous focus detection
lines
and luminous
alignment detection dots
do not appear.
Fundus camera is aligned incorrectly. Correctly align the fundus camera.
OFF is selected on ON/OFF switch. Turn the switch ON.
A dioptric lens for anterior chamber is
inserted.
Remove the dioptric lens. When using a
corrective lens, luminous focus detection
lines do not appear.
A vision corrective lens is inserted.
Remove the vision corrective lens. When
using a corrective lens, luminous focus
detection lines do not appear.
ON is selected on Clinical recording
photography switch.
Turn Clinical recording photography switch
OFF. When using a corrective lens,
luminous focus detection lines do not
appear.