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3 - 19
Does zoom operate
normally
(4) NO AUTOFOCUS OPERATION
No
Yes
Yes
No
No
Yes
OK
OK
OK
NG
NG
NG
Is manual focus
provided
Can switching be done
between manual focus
and autofocus
IC1104-92: PULSE
Connect an oscilloscope
to video out.
IC1104-93: PULSE
• Focus switches faulty
• R1178 faulty
• R1185 faulty
• C1117 faulty
• Focus switches faulty
• R1179 faulty
• R1186 faulty
• C1118 faulty
Check the focus
switches.
Focus switches faulty
See “(1) NO ZOOM AND
FOCUS OPERATION”.
1
2
1
Note: Check the items marked by pressing the manual
focus FAR and NEAR switches alternately.
VIDEO SIGNAL:
360mVp-p or more
No
Yes
OK
NG
Yes
Yes
Yes
No
No
No
TL1312: PULSE
Is there a point at
which focus is obtained
between the infinity and
close-up ends
IC1104 faulty
Initialize the unit and
adjust autofocus
Does autofocus
operate normally
Check the IC1104 and
EEPROM.
Set the zoom to the
wide-angle end
(Set the autofocus mode).
Point at the objects from
the infinity to close-up ends
Does the video level
increase
Camera circuit faulty
Increase the illumination
of the subject.
END
2
4
3
Note: Check the items marked by
turned power ON.
Note: For the item marke , perform all the adjustments required
when the unit is initialized, before adjusting autofocus.