Gryphon Commander - RC-5 Communication Codes; Battery Replacement Procedure

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The Gryphon Commander Preamplifier remote control uses the Philips RC-5 standard for
infrared communication.
The following RC-5, system 16 codes are used for the Gryphon Commander Preamplifier:
ON/STB 12
MUTE 13
VOL UP 16
VOL DOWN: 17
INPUT UP 32
INPUT DOWN 33
MONITOR 21
DISPLAY 15
Direct Input Select
INPUT 1 1
INPUT 2 2
INPUT 3 3
INPUT 4 4
INPUT 5 5
INPUT 6 6
The remote control uses a single LR2450 / CR2450 coin cell battery.
Please replace the battery if the red indicator doesn't light up when pressing a button:
Carefully remove the screws holding the rear panel of the remote control using a 2mm hex
socket screwdriver or Allen key.
Remove the rear panel and carefully slide the small battery drawer forward to release the
battery.
Observe the orientation of the battery and replace with the new battery.
Remote Codes
Remote Control Battery