Operating instructions

3-9
D. TROUBLESHOOTING PROCEDURES (cont'd)
Trouble Probable Cause Recommended Action
The sound from one channel is
distorted (you can detect the
distortion at the booth monitor
at normal listening level).
Defective power amplifier for that channel.
Defective speaker for that channel. (Booth
sound is OK but sound in the auditorium is
bad).
Malfunctioning card in CP45.
Wiring from the stereo solar cell to the CP45.
Check if amplifier is on and if its fuse(s) is ok.
Check speaker.
Check that the supplies are present on the
main board, (check the four supply LED's on
the front lip of the main board). Check that the
ribbon cable link to the front panel is properly
in place. Check that the cards are all properly
seated in their connectors, especially the
222A/SR module under the main board.
Check that the wiring from the stereo solar cell
to the CP45 has not become kinked and that
the solder connections to the fanning strip are
secure. Check that the fanning strip is firmly
attached to the terminal strip on the CP45.
Check that there is no other wire or screen
connection touching the terminals for the cells
on the back panel.
Call service engineer.
The sound from two or more
channels is distorted (you can
detect the distortion at the booth
monitor at normal listening
level).
Malfunctioning 2-channel power amplifier. If two distorted channels are served by the
same 2-channel amplifier, the problem may be
in the amplifier. See the manufacturer's
instructions.
Call service engineer.