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TM 55-4920-412-13&P
Table 4-22. Central Display and Signal Data
Digital Voltmeter
Unit Tester
Indications (V dc)
Logic P/S Switch
Pin
Settings
Connections
Min
Max
1
J2 Pin 3
-13.0
-17.0
1
J2 Pin 5
6.5
9.5
1
J2 Pin 6
6.5
9.5
1
J2 Pin 35 -
4.5
5.5
1
J2 Pin 41
4.5
5.5
1
J2 Pin 43
4.5
5.5
2
J3 Pin 1
13.0
17.0
2
J3 Pin 3
-13.0
-17.0
2
J3 Pin 5
6.5
9.5
2
J3 Pin 6
6.5
9.5
2
J3 Pin 35
3.5
6.5
1
J6 Pin 26
10.0
11.0
......
J6 Pin 27 -
-10.0
-11.0
.....
J6 Pin 16
4.0
6.0
......
J6 Pin 29 -
4.0
6.0
......
J8 Pin 13-
4.0
6.0
......
J8 Pin 16
6 0
4.0
1
J9 Pin 2
13 0
17.5
1
J9 Pin 4
-13.5
-17.5
1
J9 Pin 7
6.5
9.5
PILOTS control
fully cw
J1 Pin 4
4.5
5.5
COPILOTS control
Fully cw
J4 Pin 4
4.5
5.5
COPILOTS control
fully cw
AD/CP Test Point
4.5
5.5
P/S Cont. To Remote and
IL/S
variable P/S Control fully
Test Point
4.5
5.5
CW (connect jumper
between J3-26 and J3-27)
d.
Logic Power Supply Board (A).
(1)
Set ON-OFF-SIM ONLY to OFF.
(2)
Connect test equipment as shown in
Figure 4-1 with unit tester connected.
(3)
Connect digital multimeter leads between
J3 pin 1 (+) and COM. Observe that LOGIC POWER
SUPPLY switch is in DOWN position.
(4)
Set ON-OFF-SIM ONLY to ON.
(5)
Digital multimeter will indicate between
+13 and +17 1 vdc and set LOGIC POWER SUPPLY
switch to UP position. Digital multimeter will indicate
between -0.5 and 405 vdc. If not, see Troubleshooting
Table 4-23.
(6)
Set ON-OFF-SIM ONLY to OFF and
LOGIC POWER SUPPLY switch to DOWN position.
Change 2 4-47
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