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Troubleshooting Guide
If any of the following symptoms occur with the instrument, take the corrective actions given in the table below. If
the instrument still does not operate correctly even if the necessary corrective actions are taken, the instrument
might have broken down. Contact a Konica Minolta authorized service facility. When doing so, please inform
them of the breakdown No.
Break-
Symptom
down
No.
1
The display is
Is the AC power cord connected?
blank after the
Is the power within the specified rating?
POWER switch
is set to ON.
(100-240 V
Check whether the instrument is in remote
2
Keys are inoper-
mode (i.e. the REMOTE lamp is lit).
able.
You are maybe pressing a key that does not function.
Check whether the key is in LOCK mode.
3
Zero calibration
does not end.
("ZERO CALI-
BRATION" is
displayed in the
LCD display
section.)
"TOO BRIGHT"
is displayed even
if the light is
blocked properly.
Is the cable for the vertical synchronizing
4
" N O S Y N C .
signal connected to the terminal on the in-
SIGNAL" is dis-
strument and is the vertical synchronizing
played in EXT
signal input?
SYNC mode.
Does the level of the vertical synchroniz-
ing signal conform to the specified input
condition?
Is the frequency of the vertical synchro-
nizing signal input to the instrument cor-
rect?
The calibration val-
5
Is Lv of the calibration values for low lu-
ues entered for user
minance?
calibration using
keys differ from
those displayed at the
end of calibration.
6
Measurement re-
Is an appropriate SYNC mode selected for
sults fluctuate.
the display measured?
You are maybe measuring a low-luminance
display.
Is the measuring probe placed with the dis-
play and secured firmly?
Is "4-Probe Expansion Board CA-B04"
fixed by the screw?
Is the AC power code connected to protec-
tive grounding terminal properly?
Check Point
, 50-60 Hz, 50VA)
111
111
Action
Connect the AC power cord.
Use the power that is within the rating.
Press the REMOTE key to turn off re-
mote mode (i.e. the REMOTE lamp goes
out).
Press the correct key.
Hold down the
key (for two seconds)
to cancel LOCK mode.
Turn the power OFF, turn it ON again, and
then perform zero calibration. If this symp-
tom still occurs, the instrument is broken
down.
Connect the cable to the connector on the
instrument and display, and input the verti-
cal synchronizing signal.
Set the signal level so that it conforms to
the specified input condition.
Make sure that the frequency is within the
following range.
40 to 200Hz
If a low-luminance value is used as the cali-
bration value, this symptom may occur due
to calculation error.
Select an appropriate SYNC mode and per-
form measurement.
Repeatability for x and y drops if a low-
luminance display is measured.
Make sure that the probe is placed with the
display and secured firmly.
Fix it with the screw securely.
Be sure to connect the AC power cord's plug
to an AC outlet that has a protective ground-
ing terminal.
Ref.
29
26
30
–
18
29
35
28
28
38
50
38
76
76
13
27
28
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