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ECF S
ENSOR
U
NIT
C
HECK
P
URPOSE
:
This is for checking the ECF sensor unit. Select this item if the user complains about
Eye Control focusing problems.
Items to be checked:
• ECF sensor output
• IRED illumination position and output
• ECF sensor position
• ECF sensor check (IREDs off)
P
REPARATIONS
:
1) On the ECF Adjustment menu, select [F2] ECF Sensor Check (IREDs off).
C
HECK
P
ROCEDURE
:
1) After a few moments, the waveforms
as shown on the right will appear.
Cover the eyepiece or shine a light
source (about EV12) on it. The
waveforms should look even. If there
is an irregular peak or depression
somewhere, check for any smudges
on the eyepiece and do the ECF
sensor unit adjustment. After the
adjustment, check the waveforms
again. If nothing improves, the ECF
sensor is probably faulty.
Part 4: Electrical Adjustment
4-40
Many ECF problems are caused by a dirty eyepiece lens. Before executing
the above checks, clean the eyepiece lens.
CAUTION
NAC_C2
ECF check
IRED condition is normal if four posts
can be seen in each wavefrom.
Press RETURN to return to ECF adjustment menu
Summary of Contents for C12-8453
Page 7: ...Part 1 General Information ...
Page 12: ...Fig 1 2 Three External Views Part 1 General Information 1 5 ...
Page 53: ...Part 1 General Information 1 46 Fig 1 23 Three External Views ...
Page 67: ...Part 2 Technical Information ...
Page 103: ...Part 3 Repair Information ...
Page 104: ...This page intentionally left blank ...
Page 117: ... MEMO Part 3 Repair Information 3 13 ...
Page 123: ... MEMO Part 3 Repair Information 3 19 ...
Page 137: ... MEMO Part 3 Repair Information 3 33 ...
Page 148: ...Part 4 Electrical Adjustment ...
Page 195: ...Part 5 Parts Catalog ...
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Page 237: ...Part 6 Electrical Diagrams ...
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