![AR 10013130 Скачать руководство пользователя страница 40](http://html.mh-extra.com/html/ar/10013130/10013130_operating-and-service-manual_2962272040.webp)
Model 2000TP2G8B
30
Rev -
1. Remove the amplifier from the cabinet or rack as follows:
NOTE:
Due to the weight of the unit, the removal of the amplifier from the cabinet or rack is a two-
person operation
Disconnect power, RF, and any other interface connectors. On the rear of the unit, remove any screws
used to connect brackets to the amplifier. On the front of the unit, remove all of the screws holding the
front panel to the cabinet. Carefully slide the entire amplifier out of the front of the cabinet.
2. Remove the screws that secure the lower cover and the screws that secure the upper cover. Remove the
covers to gain access to the interior of the amplifier.
Vacuum dust and debris from inside the enclosure. Clean dust from the amplifier and its flying leads.
Remove any dirt from around the high voltage connectors. While the cover is off, check for loose wires,
components or fasteners. Reassemble in the reverse order.
4.4 TROUBLESHOOTING
Symptom
Possible cause
TWT or power supply overtemperature
Air inlet filter(s) dirty
Collector heat sink dirty
Inadequate clearance behind TWTA
High air inlet temperature
Defective fan or fan driver
No response when main power turned on
Disconnected power cable
Defective circuit breaker
Panel open interlock switch open
Control module display does not come up; unit does
not beep when powered up
Shorted or defective control module power supply
Control module failure
Control module does not boot
EPROM(s) missing
Control head PC board defective
Control module "datalink failure" error appears
HPA interface failure.
Data steering board failure
Fiberoptic link failure
+15 VDC supply failure
Heater power supply does not come up
Defective low voltage power supply module
Defective heater power supply module
No high voltage
Keylock switch on "INHIBIT" or "REMOTE"
Defective high voltage power supply.
Open external interlock
Voltages normal, but no RF output, helix current low
No RF input
Defective SSA
Gain turned down
After reviewing the symptoms of the failure, the user may want to check for a loose connector or component
especially after rough handling of the unit. Look externally for physical damage or loose connectors and
internally for unmated or loose parts
.
The service technician should become familiar with the internal mechanical construction to permit correct re-
assembly. Limited troubleshooting may be conducted, with caution, based on the failure symptom and an
understanding of the logic/schematic diagrams
.
4.5 NON-REPAIRABLE MODULES
The Heater power supply (A10010-000), the Grid modulator (A23684-101), the HV filter (A21458-004), the
Diode/Cap assembly (A21425-020), and the Capacitor bank (A21458-005) are encapsulated modules and are
not repairable. Contact an authorized service representative if replacement modules are needed.
Содержание 10013130
Страница 2: ......
Страница 4: ......
Страница 6: ......
Страница 8: ......
Страница 16: ...6 Rev ...
Страница 42: ...Model 2000TP2G8B 32 Rev ...
Страница 44: ...Model 2000TP2G8B 34 Rev ...
Страница 46: ...Model 2000TP2G8B 36 Rev ...
Страница 68: ......