User's Manual Part 2
Table Of Contents
- Maintenance
- Introduction
- Scheduled Maintenance
- Unscheduled Maintenance
- Introduction
- Tools, Materials and Test Equipment Required
- T6T VHF Amplifier Procedures
- Top and Bottom Covers
- Removing and Refitting the Interface Module
- Removing and Refitting the PSU Regulation Module
- Removing and Refitting the Power Supply Modules
- Removing and Refitting the Combiner BIT Module
- Removing and Refitting the PA Modules
- Removing and Refitting the Front Panel PCB
- Removing and Refitting the Cooling Fans
- T6T VHF Drive Assembly Procedures
- Removing the Top Cover
- Removing and Refitting the Processor Module
- Removing and Refitting the PSU Regulation Module
- Removing and Refitting the Drive Module
- Removing the Bottom Cover
- Removing and Refitting the PA Control Module
- Removing and Refitting the Power Supply
- Removing and Refitting the Front Panel PCB
- Virtual Front Panel (VFP)
Fig 36 T6T VHF Amplifier Wiring List
Connections 18
Name Characteristic
PSU-1 PSU-2
dc OK
Ground
PSU off
CN4-2
CN4-1
CN4-3
0 V = off
TTL, high = PSU on
0 V
Connections
17
Name Characteristic
CN7-6
CN7-7
CN7-8
CN7-2
CN7-4
CN7-3
CN7-5
CN7-1
Regulation
Pin Diode - ve
V Unregulated
n/c
AC Derived Supply
DC Derived Supply
Ground
Ground
Ground 0 V
29 V
21.6 V to 32 V
0 V
-30 V to -35 V
CN3-2
CN3-1
n/c
CN1-3 & 4
CN2-2
CN2-1
CN3-3
CN1-1 & 2
21.6 V to 32 V
0 V
n/c
Connections
19
Name Characteristic
PSU-1 PSU-2
CN1-1
CN1-6
CN1-5
CN1-2
Ground Supply
V Unreg
Ground Supply
V Unreg
0 V
0 V
29 V
29 V
0 V
0 V=on
o/c okPSU ok
0 V
PSU off
Regulation
0 V
PSU ok
0 V
0 V ok
PSU off 0 V=off
Name Characteristic
Connections 16
CN6-3
CN6-5
CN6-4
CN6-6
CN6-2
CN6-1
CN12-3
CN12-1
PA-1 PA-2
1 dBm carrierRF DriveCN10CN17-1 CN18-1
Connections
14
Name Characteristic
RF Output
PA-1 PA-2
CN1-1 5 to 50 WCN22-1 CN23-1
Connections
15
Name Characteristic
Input-1 CN2-2 Fused 21.6 V to 32 VDc Input
Input-2 CN2-1 Ground Supply 0 V
DC Input-1, DC Input-2 Regulation
Input-3 n/c n/c
Name Characteristic
Connections 20
CN3-14
CN3-13
CN3-12
CN3-11
CN3-10
n/c
Remote on/off
V Unreg
DC Detect
CN3-9
CN3-8
CN3-7
CN3-6
CN3-5
CN3-4
CN3-3
CN3-2
CN3-1
AC Detect
-15 V Supply
Ground
+5 V Supply
+15 V Supply
+15 V Supply
-15 V Supply
+5 V Supply
Ground
-15 V
21.6 to 32 V
21.6 to 32 V
Open collector
15 V on, 0 V off
+15 V
+5 V
+15 V
-15 V
+5 V
0 V
0 V
0 V=off, open collector=on
n/c
ProcessorRegulation
Connections 26
Name Characteristic
CN4-1
CN4-2
CN4-3
CN4-4
CN4-5
CN4-6
CN4-7
CN4-8
CN4-9
CN4-10
CN4-11
CN4-12
CN4-13
CN4-14
V Unreg
PA Bias EnableCN13-3 CN14-3
CN13-5 CN14-5
CN13-4 CN14-4
Reflected Power
Fan Enable
PA-1 PA-2
CN13-6 CN14-6
CN13-2 CN14-2
CN13-1 CN14-1 PA Temperature
Drive Detect
CN4
CN9
CN5
CN7
CN2
CN12 PA Count
Connections 11
Name Characteristic
50 W = 670 mV
TTL - High for fan on
TTL - High for bias on
10 mV / °C +0.5 V
0.5 V for +10 dBm
TTL, PW = 10 ms/50 W PA
CN3-1CN5-1 CN6-1 V Unreg 21.6 V to 32 V
Connections
12
Name Characteristic
CN3-2CN5-2 CN6-2
PA-1 PA-2
-33 V -30 V to -35 V
Forward Power Sense 17 dBm ±1 dB (-30.5 dBc ± 0.9 dB)
Connections
13
Name Characteristic
CN25-1 CN26-1 CN8
PA-1 PA-2
CN10-2 CN11-2
CN10-1 CN11-1
CN10-3 CN11-3
CN1-3 CN3-3
CN1-2 CN3-2
CN1-1 CN3-1
CN1-4 CN3-4
CN3-3CN5-3 CN6-3 Ground Supply 0 V
CN12-3
CN12-6
CN12-4
CN12-5
0 V
Ready LED
0 V
TX LED
Interface Front Panel
0 V
Alarm LED
0 V
Open Collector, 21 mA maximum
+15 V +15 V
Name Characteristic
Connections 24
CN7-3
CN7-1
CN7-2
CN7-6
CN7-4
CN7-5
CN7-7
CN7-8
CN7-9
CN7-10
CN1-3
CN1-1
CN1-2
CN1-6
CN1-4
CN1-5
CN1-7
CN1-8
CN1-9
CN1-10
n/c n/c
n/c n/c
n/c n/c
n/c n/c
Open Collector, 21 mA maximum
Open Collector, 21 mA maximum
Combiner BIT module
Combiner BIT module
Combiner BIT module
Combiner BIT module
Combiner BIT module
Combiner BIT module
Combiner BIT module
Combiner BIT module
Combiner BIT module