CLOCK
CHAIN
0
1
2
3
—24V CONVERTER
LOCATION
012-22
012-50
112-22
112-50
voltage between output
terminal 2 of —24V
converter and frame
[2] Is voltage
between —22
and —26 volts
[3] Clear
power problem
[SD-4A014-02]
remove power from chain
converter [TABLE A]
[6] Disconnect power connector
being checked
[7] Replace fuse removed
in Step 5
connector removed from
oscillator with positive
[4] Depress
ROS/OFF
switch to
[5] Remove
+
24V
fuse for —24V
terminals
C
and
B
of power
probe on terminal
C
between —22
and —26 volts
power problem
[SD-4A014-02]
No
Yes
Yes
No
[9] Is voltage
[10] Clear
P19
from oscillator
ground [TABLE A]
AND
CHECK 39B OSCILLATOR —24V POWER
[1] On back of fuse
panel, measure —DC
[8] Measure —DC voltage between
lamp lights)
being checked (
PWR OFF
TABLE A
+
24V FUSE
DESIGNATION
OBOA
OBOB
1B0A
1B0B
LOCATION
007-20
007-51
107-20
107-51
234-151-013
521
Issue 8
DEC 1995
PAGE 1 of 1
DLP
