Figure 6-4. V/H board assembly wiring diagram, rear view.
Section II. DIRECT SUPPORT MAINTENANCE
they will reference maintenance at the general support
Direct support maintenance is limited to the replacement
of the POWER indicator light assembly and the edge
b. Troubleshooting begins with the operator's and
light faceplate. Cleaning and inspection routines for the
organizational maintenance. The troubleshooting chart
V/H control panel are the same as for the other control
below represents an extension of the troubleshooting
units in the camera.
charts in TM 11-6720-24212.
6-7. Direct Support Troubleshooting
a. The symptoms listed in this troubleshooting
PORT MAINTENANCE chart will aid in localizing trouble
to a particular component in the V/H control panel, or
Power indicator light does
Indicator light assembly defective ................ Replace indicator light assembly
not light when POWER
circuit breaker CB1 is
set to ON.
No edge light when POWER
No +5vdc input ................................... a.
circuit breaker is set to ON:
pins D and L of 4P1. If no
voltage present, refer to a
higher category of main-
b. Lamps in edge light panel
b. Replace faceplate (pars 6-8b).
Change 1 6-5