LAMP REPLACEMENT

TM 11-6625-2664-30/NAVAIR 16-35TS3615-2

One power supply is located in Status Panel Assembly 1A2:

+12V Power Supply PS1.

Four of the power supplies are located in RF Modulation Assembly 1A3/1A4.

+5V Power Supply PS1.

-65V Power Supply PS3.

+15V Power Supply PS2.

-15V Power Supply PS4.

3-30. The two-fold purpose of troubleshooting procedures in Section III is to

detect trouble in the system and to isolate the malfunction to a particular

assembly or subassembly. If the trouble is traced to the single power supply

on the status panel, replace the power supply. Similarly, four power supplies

on RF Modulation Assembly units 1A3 or 1A4 may be replaced if necessary. If a

malfunction is traced to the three power supplies in the control panel, replace

the defective power supply. If the control indicator on Control Panel Assembly

1A1 is defective, another control indicator may be substituted. One RF

modulation assembly may be substituted for the other.

LAMP

REPLACEMENT

3-31. Lamp replacement is accomplished from the panel front without the use of

any tools.

CAUTION

In lamp assemblies with dual sockets, install only

a single lamp. Sockets are wired in parallel and a

second lamp would overload the lamp power supply.

The dual-lamp light capsule which holds the lamps and front lens is held to the

unit housing by spring clips which allow it to be removed from the front panel

for quick and easy lamp replacement. To obtain access to the lens, diffuser,

or color filter, slide the holder vertically upward and off the light capsule.

In the BITE 4-lamp assembly, pull lens forward and rotate 90 degrees: pull and

hinge lamp assembly downward: remove colored filters from suspected defective

lamp; press lamp to rear and remove. Press replacement lamp in socket, replace

filter and reinstall lamp assembly. After replacement of a lamp, the indicator

should be retested by depressing the LAMP TEST switch on the front of the

control panel assembly to check that the new lamp lights. For power indicators,

unscrew lens (CCW), pull lamp from lens, press in replacement lamp and screw

lens (CW) back into socket.

3-73