Figure 12. Audio accessory connector.
q. See Figure 13. Before going on, let's look at how the intercom controls should be preset.
First, the setting of the controls of the AM-1780:
(A) MAIN PWR switch to INT ONLY.
(B) POWER CKT BKR to ON.
(C) INT ACCENT to OFF.
(D) RADIO TRANS switch to any of its three positions: CDR+CREW,
CDR ONLY, or LISTENING SILENCE.
(E) INSTALLATION SWITCH to INT ONLY.
POWER lamp lens cover CCW to STOP.
Second, the setting of the controls of the C-2298:
(G) MONITOR switch to INT ONLY.
(H) VOLUME to a comfortable listening level.