4 - 8
Troubleshooting > Trouble Diagnosis
C h e c k t h e
c o n n e c t i o n s o f t h e
l e n s f l a t c a b l e .
T L 4 0 0 6 : 3 V
L e n s f a u l t y .
I C 2 0 5 7 f a u l t y .
R 4 0 0 1 f a u l t y .
Q 4 0 0 1 f a u l t y .
C h e c k t h e 3 V l i n e
C o r r e c t t h e
c o n n e c t i o n s
o f t h e f l a t c a b l e .
No
No
No
Yes
Yes
Yes
(8) No auto focus operation
Does the video
level increase?
Camera circuit faulty.
Increase the
illumination
of the subject.
VIDEO SIGNAL:
360mVp-p or more
Connect an
oscilloscope
to video output
Does zoom
operate
normally?
See "(4) No zoom and
focus operation."
Yes
No
No
No
Yes
Yes
Set the zoom to the
wide-angle end.
Point at the objects
from the infinity to
close-up ends.
Is there a point at
which focus is obtained
between the infinity
and close-up ends?
TL4005 or
IC2507-39 :
Pulse
Data Initialize and
adjust auto focuss.
Does autofocus
operate normally?
IC2507 faulty.
END
Yes
Yes
No
No
No
Yes
Note: For the item marked #, perform all
the adjustments required when the
unit is data initialized, before
adjustiNo auto focus.
#
IC4001-8 : 3V
TL4023 : 6V
IC4001-32 : Pulse
Check the 6V (VM)
line
Check the 3V line
Lens faulty.
IC4001-38 : Pulse
I C 2 5 0 7 f a u l t y .
I C 2 5 0 7 f a u l t y .
I C 2 5 0 7 f a u l t y .
Yes
No
No
No
Yes
Yes
No
No
No
Yes
Yes
Yes
IC4001-33 : Pulse
T L 4 0 2 4 : P u l s e
I C 2 5 0 2 f a u l t y .
I C 4 0 0 1 f a u l t y .
Yes
T L 4 0 0 7 o r
I C 2 5 0 7 - 3 3 :
P u l s e
T L 4 0 0 1 t o 4 0 0 4 o r
I C 4 0 0 1 - 1 2 , 1 4 , 1 0 ,
1 6 : P u l s e s
Circuit No.
1000 to 1099
1100 to 2999
3000 and higher
Circuit Board
SP
PC
CSR
