TB 9-4920-361-24
Unit tester pin connections
Oscilloscope indications
Frequency counter indications
Negative pulses between 4.0 and 6.0 V
Between 1300 and 1900 Hz
J2 Pin 45
46
47
48
49
50
J3 Pin 44
45
46
47
48
49
50
J6 Pin 17
18
19
20
21
22
23
Square wave between 4.0 and 6.0 V
Between 700 and 800 ms
J2 Pin 51
52
J3 Pin 51
52
J6 Pin 14
15
23. Power Supply
NOTE
Do not perform power supply check if all other parameters are
within tolerance.
a. Performance Check
(1) Set all power to TI to OFF.
(2) Remove power supply board (A1) (fig. 4) and reconnect, using extender board.
(3) Connect multimeter positive to loop 18 and negative to loop 14 on
extender board.
(4) Set power to TI to ON. If multimeter does not indicate between 11.5 and 12.5 V
dc, perform b (1) below.
(5) Disconnect lead from loop 18 and connect to loop 46. If multimeter does not
indicate between 11.5 and 12.5 V dc, perform b (2) below.
(6) Disconnect lead from loop 46 and connect to loop 13. If multimeter does not
indicate between -11.5 and -12.5 V dc, perform b (3) below.