10
Figure 3.3: Panel with Illumination and Status Lamps Removed
•
Place plastic insulating washers behind the PCB attachment holes and then attach the
LED PCB using the two screws removed previously. The insulating washers
MUST
be placed between the PCB and the chassis.
•
Check the orientation of the four illumination LEDs (D3, D4, D5, D6) – They should
point downward toward the meters. Orient as necessary.
•
Refer to Figure 3.3. There is an opening in the metalwork immediately above the
“On-Air” lamp which provides access to the area directly over the top of the meters.
Cut an
≈
1.25in by 5in strip of the white diffuser paper and insert the paper strip
into this opening, between the meter illumination LEDs and the meters. Inserting this
“Diffuser” will provide uniform illumination of the meters and prevent bright spots.
•
Check the orientation of the “On-Air” and “Standby” LEDs – They should point
toward their respective “On-Air” and “Standby” plastic filters. Ensure there is no
physical contact between the chassis and the leads emerging from the LEDs. Adjust
as necessary.
•
Route the wire bundle and electrical connector downward next to the bulkhead so that
the connector emerges behind the “Stby-Operate” mode switch.
NOTE:
Later versions of the LED Circuit Board do not have wires soldered di-
rectly to the circuit board. Instead, they have a 5-Pin connector for easier installation
and removal. In this case, connect either end of the cable provided into connector “P1”
and route the wiring as shown in the Figure.
When finished, the installed LED board should look as shown in Figure 3.4.
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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...
