TM 11-6720-242-35
Figure 6-4. V/H board assembly wiring diagram, rear view.
Section II. DIRECT SUPPORT MAINTENANCE
6-6. Scope
they will reference maintenance at the general support
level.
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
Malfunction
Probable Cause
Corrective Action
Item
1
Power indicator light does
Indicator light assembly defective ................ Replace indicator light assembly
not light when POWER
(para 68c).
circuit breaker CB1 is
set to ON.
2
No edge light when POWER
a.
No +5vdc input ................................... a.
Check with voltmeter acres
circuit breaker is set to ON:
pins D and L of 4P1. If no
voltage present, refer to a
higher category of main-
tenance.
b. Lamps in edge light panel
b. Replace faceplate (pars 6-8b).
defective
Change 1 6-5
