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SERVICE MANUAL
23JUL01
SM5766-1
Page
No auto-focus (Models 1500 and
93 of 96
2000 Only)
Malfunction
Solution
1.
Check that the AUTO-FOCUS
DEFEAT SWITCH is in the "ON"
position.
2.
Check that the MAIN
PROJECTION LAMP operates
correctly.
3.
Insert the TARGET SLIDE TL-
3002 in the GATE MECHANISM.
•
Check that the TARGET is
correctly aligned. If not, see
the Adjustment section.
4.
Check that the voltages across the
PHOTOCELL are correct. The
voltage from 1 to 2 is 14.5 V ac.
The voltage from 2 to 3 is 14.5 V
ac. The voltage from 1 to 3 is 29
V ac.
5.
Make a short• between 1 and 2;
the FOCUS MOTOR should rotate.
6.
Make a short•circuit between 2
and 3; the FOCUS MOTOR
should rotate in the reverse
direction.
7.
If the FOCUS MOTOR operates
correctly, install a new
PHOTOCELL. If the FOCUS
MOTOR does not operate
correctly, measure the voltages on
the BOARD.
Diagnostics
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