9
3.5
LED Board Installation
Synopsis
The amplifier’s incandescent lamps will be removed and replaced with a PCB containing six
LEDs which provide meter illumination as well as “Standby” and “On-Air” status indica-
tions.
Installation
The stock lamps are held in-place by rubber grommets and electrically connected to a ter-
minal strip as shown in Figure 3.2.
Figure 3.2: Stock Lamps Prior to Removal
•
Remove and discard the meter lamps by sliding them upward. Cut or desolder the
lamp wires from the grounding post.
•
Remove and discard the “Standby” and “On-Air” lamps, sliding them sideways (as
necessary).
•
Remove (but retain) the two screws holding the terminal strip.
Note:
We suggest using
a right-angle drive screwdriver.
•
Cut (as necessary) any wire connected to the terminal strip.
•
Remove and discard the terminal strip and lamps.
When finished, the lamp area should appear as shown in Figure 3.3.
•
Orient the LED PCB, aligning the PCB mounting holes over the mounting brackets
used to hold the terminal strip. It may be necessary to shorten the grounding post.
www.KesslerEngineeringLLC.com
Summary of Contents for TL-922 Revival (tm)
Page 13: ...6 Figure 3 1 TL 922 Revival tm Upgrade Kit Contents www KesslerEngineeringLLC com...
Page 18: ...11 Figure 3 4 LED Circuit Board Correctly Installed www KesslerEngineeringLLC com...
Page 30: ...23 Figure 3 19 QSK PCB to QRO Output Connections www KesslerEngineeringLLC com...
Page 34: ...27 Figure 3 23 Electronic Bias PCB Installed www KesslerEngineeringLLC com...
Page 47: ...40 Figure 3 30 Step Start PCB www KesslerEngineeringLLC com...
Page 49: ...42 Figure 3 33 LED Schematic Diagram Figure 3 34 LED PCB www KesslerEngineeringLLC com...
Page 50: ...43 Figure 3 35 Electronic Bias Schematic Diagram www KesslerEngineeringLLC com...
Page 51: ...44 Figure 3 36 Electronic Bias PCB www KesslerEngineeringLLC com...
Page 54: ...47 User Notes www KesslerEngineeringLLC com...
Page 55: ...48 5 1 User Notes Continued www KesslerEngineeringLLC com...
Page 56: ...49 5 2 User Notes Continued www KesslerEngineeringLLC com...
Page 57: ...50 5 3 User Notes Continued www KesslerEngineeringLLC com...
