Adcom GTP-760 owner manual Trouble Shooting, Operating Room 2 From “Room 2”

Operating Room 2 From “Room 2”

In addition to the front panel Room 2 controls, the GTP-760 provides an interface for controlling Room 2 remotely. Such a connection is technically sophisticated and usually intended only for custom installations. Please contact your ADCOM dealer or ADCOM directly for further information on these advanced features and capabilities.

5.0 TROUBLE SHOOTING

Your GTP-760’s circuitry is built around advanced microprocessors. The GTP-760 may exhibit occasional anomalies arising from AC line surges, etc. If you experience unexpected behavior, or if the GTP-760 “locks up” and does not respond to control input, reset it by turning the front power switch off. (Do not use the remote control’s “power” button.) Wait 10 seconds and then turn the GTP-760 on. This will reset the internal control circuitry and solve most problems.

SYMPTOM

Power LED does not light

Power LED glows but no sound

No Video Output

No sound from one channel

Hum from all speakers (any volume)

Hum from all speakers (increases or decreases with change in system volume)

POSSIBLE REASON	POSSIBLE SOLUTION
AC Power Cord not plugged in	Plug in AC Power Cord
AC Fuse failed	Replace AC Fuse
Power amp or source unit is not ON	Make sure whole system is ON
Video Processor (rear panel) is ON	Move video processor switch to OFF
Connections in rear of amp are loose	Verify all connections on rear of amp
Input or Output connector	Verify both connections on that
disconnected or loose	channel
Speaker disconnected	Verify connection at speaker
Ground loop present	If cable TV is present, see Note 1
(difference in ground voltages	If cable TV is not present,
between components)	see Note 2
A major appliance, dimmer,	Make sure all appliances, dimmers
halogen or fluorescent light may be	and suspect lights are off
creating interference
Problem with source unit (CD, etc.)	Try different source to verify
Problem with cable connecting that	Try different cable to verify
source to the Tuner/pre-amp

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