GAI-Tronics PA250-001 Handbuch - Seite 10
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Model PA250-001 250 Watt Central Amplifier
3. Check, and replace fuses as needed.
4. Reinstall top cover securely.
5. Reconnect ac power.
Service
If the equipment requires service, contact your Regional Service Center for a Return Authorization
number (RA #). Equipment should be shipped prepaid to GAI-Tronics Corp. with a Return Authorization
number and a Purchase Order number. If the equipment is under warranty, repairs or a replacement will
be made in accordance with GAI-Tronics' warranty policy. Please include a written explanation of all
defects to assist our technicians in their troubleshooting efforts.
Call 800-492-1212 inside USA or 610-777-1374 outside the USA for help identifying the Regional
Service center closest to you.
Troubleshooting
Problem:
Possible Cause:
No ac power present.
No front panel
POWER ON
indication
Unit's ac circuit
breaker is tripped.
No audio output
Blown internal F1/F2
fuses
No input signal source
Incorrect input signal
connection
Incorrect setting of
25V/70V LINE switch
Incorrect output
connections
600-ohm/Tel-Page
gain control (rear)
No automatic
Internal jumper setting
muting of Hi-Z
input signal
Insufficient 600-ohm/
Tel-Page gain
f:\standard ioms - current release\42004 instr. manuals\42004-340e.doc
06/02
Possible Solution:
•
Verify ac power cord is plugged in to ac outlet.
•
Verify ac outlet has proper ac voltage available.
•
Depress the plunger to reset.
•
Check the internal low voltage power supply fuses on
both amplifier boards.
Check F1/F2 fuses located on both power amp PCBAs.
CAUTION: Replace with the same type/value fuse.
Verify that proper signal/level is being supplied.
Verify that the signal input connection is correctly
connected.
If using the line output speaker connections, insure the
25V/70V LINE switch is in the IN position located on the
unit's rear.
Check that the output connection has been properly made.
If used, increase level adjustment accordingly.
Note: Both VOLUME and rear gain control affect output
level.
Check that the internal mute jumper is in the A (enabled)
position.
•
Check 600-ohm/Tel-Page gain setting.
•
Check 600-ohm/Tel-Page audio signal level is
sufficient.
Pub. 42004-340E
Page: 10 of 12