TM9-4935-481-14-1
Table 3-11. DMS-D Performance Test-Continued
Table 3-11. DMS-D Performance Test-Continued
STEP
UNIT
PROCEDURE
CORRECTIVE ACTION
STEP
UNIT
PROCEDURE
CORRECTIVE ACTION
986
MCP
SELECTOR A switch to A1.
999
PPE
Connect DMM pos probe to J3 ALIGN.
987
PPE
FUNCTION TEST switch to +24V REG.
1000
DMM
Observe a reading of +5.373 to +5.427 Vdc.
988
DMM
Observe a reading of +24.00 to +25.00 Vdc.
1001
MCP
DMM FUNCTION switch to K OHMS.
Check J28-43 through switch S21.
1002
PPE
FUNCTION TEST switch to OVER VOLT.
989
1CP
SELECTOR A switch to A2.
1003
PPE
Connect the DMM pos probe to J1 (OVERVOLT STIMULI).
990
DMM
Observe a reading of -24.0 to -25.0 Vdc.
1004
DMM
Observe a reading of 2.274 to 2.366 Kohms.
Check J28-44 through switch S21.
Check J28-26.
991
PPE
FUNCTION TEST switch to INT-CLK.
992
PPE
Actuate TEST START and hold for 1.2 sec minimum, then release.
Trigger Safe
Verify the DMM indicates an open circuit (reading drifts away
1005
Return all switches to the initial switch settings, leaving the
from previous value).
MAIN POWER and DMS switches ON.
Replace card A24. Check A24 pins
1006
ITP
INTERNAL TEST switch to 7.
48, 99, 96 and 76.
1007
MCP
SELECTOR A switch to Fl.
993
MCP
SELECTOR A switch to A1.
1008
MCP
SELECTOR B switch to D24.
994
PPE
Momentarily actuate TEST START switch. (less than 1 second)
1009
MCP
SELECTOR C switch to D24.
995
PPE
Actuate TEST START switch and hold for 1.2 sec minimum, then
1010
PPE
FUNCTION TEST switch to INT-CLK.
release. Observe that the DMM indicates an open circuit
1011
PPE
SEQUENCE switch to AUTO 3.
(reading drifts away from previous value).
1012
CT
FUNCTION switch to TIME A
B.
Replace card A24. Check A24 pins
1013
CT
A INPUT switch to neg.
48, 99, 96 and 76.
1014
CT
B INPUT switch to pos.
0
996
MCP
SELECTOR A switch to F11.
1015
CT
FREQ/TIME/MULT switch to 10
.
997
DMM
Observe a reading of +5.373 to +5.427 Vdc.
1016
CT
Adjust DISPLAY control fully cw to HOLD.
Replace card A9. Check A9 pin 36.
1017
MCP
Adjust COMPARATOR THRESHOLD B control to -0.0950 0.0050 Vdc.
998
MCP
DMM INPUT switch to DMM INPUT.
DMM
1018
MCP
SELECTOR A switch to F2.
3-114