Operating instructions

3-7
D. TROUBLESHOOTING PROCEDURES (cont'd)
Trouble Probable Cause Recommended Action
All channels fail when playing a
movie and Bypass does NOT
bring the sound back.
Defective exciter lamp or lamp power supply.
Projector selection wire/switch is faulty.
No signals coming from stereo solar cells.
Malfunction in the CP45.
Check that the exciter lamp is on and that the
lamp power supply is operating. If not, fade up
background music and transfer the reel to the
alternative projector and continue the show
there until the exciter lamp can be replaced.
Call service engineer.
If the front panel LED for the currently active
projector is not alight, check that the projector
selector switch wiring is held firmly under the
screw terminals on the back panel of the
processor and that the switch is operating
properly.
Check that the signal present LEDs on the Cat.
No. 222A/SR module under the main board
are flashing while film is projected. If not,
there is no signal from the solar cells or the
Cat. No. 222A/SR has failed. Switch to bypass
and call service engineer.
If the signal present LEDs on the Cat.
No. 222A/SR module are flashing, but the
ones on the front panel are not, the problem is
caused by a malfunctioning card or module in
the CP45. Switch to Bypass and call service
engineer.