JRC JCY-1900 Service Manual page 67

3. OPERATION CHECKING ON HARDWARE
JCY-1900/1950 VDR Service Manual
3) Checking the beacon operation
Monitor an outputting acoustic signal from the beacon with the Beacon checker (7HMNA4001).
• Turn on the beacon tester with turning a volume switch.
• Short-circuit between terminals in order to operate the Beacon.
• If the oscillation sound of the Beacon can be heard, judge that the Beacon is operating normally.
Beacon checker （7HMNA4001）
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DOC No. 7ZPNA4409