Figure 2-15. Sync signals A and B (battery power supply unit).
b. Troubleshooting Procedures All troubleshooting
procedures for the commander's control unit are
Commander's Control C-9134/VVG-1 A79).
contained in table 2-8. This table is to be used after
a. Test Setup. set up riot mock-up as described
organizational maintenance has determined the
malfunction to exist in the commander's control unit.
Table 2-8. Troubleshooting of Laser Ranging Commander's Control C-9134/VVG-1 (A79)
Ensure that power is off when installing or removing units in hot mock-up, or installing or removing
components or assemblies in units .
Unless otherwise specified, all switches, indicators, and test points are on the A79 unit.
When TSW switch is pressed,
Defective lamp, TSW switch, or
Install failed unit in hot mock-up.
one or more do not illuminate.
logic circuit card A79A1.
Perform portion of checkout (para 4-2a
or 4-2b) which will duplicate
Replace lamp associated with
malfunction (para 3-9f).
Perform step 2. If malfunction is not
corrected, continue to step 5.
Remove unit access cover (para 3-9a).
Using multimeter, measure voltage at
TP7 on A79A1 card