C4
TM9-4935-481-14.1
Table 3-14. TTS Performance Test-Continued
STEP
UNIT
PROCEDURE
CORRECTIVE ACTION
STEP
UNIT
PROCEDURE
CORRECTIVE ACTION
NOTE
Circuit is very sensitive, jumper with a short piece of 16 ga. wire and fasten securely.
146
PP
DMS switch to OFF.
162
Connect a (16 gauge wire) jumper between J1 and J2 on the 1W4
147
MCP
Disconnect 1W2-P2 from J7.
cable.
148
MCP
Connect 1Wl-P3 to J7.
163
TTS
Momentarily actuate TEST START/STOP pushbutton (power on).
149
PP
DMS switch to On Momentarily actuate TEST START switch.
164
TTS
Observe TESTING lamp illuminated.
TP
165
CIP
Wait until INHIB lamp illuminates.
150
MCP
DMM LO switch to SEL B.
166
DMM
Observe a reading of the voltage calculated in step 161 + 15%.
151
MCP
SELECTOR A switch to C9.
(20)
152
MCP
SELECTOR B switch to C10.
167
TTS
Momentarily actuate TEST START/STOP pushbutton (TESTING light
153
PPE
SEQUENCE switch to MNL.
goes off).
154
CIP
COUNTER INHIBIT (SEC) dial to 20.96.
168
Remove the jumper between J1 and J2 on 1W4.
169
MCP
SELECTOR A switch to Fl.
CAUTION
170
MCP
SELECTOR B switch to C9.
Do not actuate DMS-D PPE TEST START switch while
171
MCP
SELECTOR C switch to I22.
TTS POWER switch is ON.
172
Connect the 10215396 cable to J15.
155
TTS
POWER switch to ON.
173
TTS
Connect the white probe of 10215296 to lA4Al-J9 and the black
156
TTS
Momentarily actuate TEST START/STOP pushbutton (power on).
probe to 1A4A2-J2.
157
TTS
Observe TESTING lamp illuminated.
174
DMM
Adjust COMPARATOR THRESHOLD "B" control to -0.2000 + 0.001 VDC.
158
CIP
Wait until INHIB lamp illuminates.
175
CIP
COUNTER INHIBIT(SEC) dial to 25.00.
159
DMM
Observe a reading between -0.2230 and -0.2650 Vdc, record for
176
CT
DISPLAY control to HOLD.
use in step 161.
(19)
177
CT
B INPUT switch to pos.
160
TTS
Momentarily actuate TEST START/STOP pushbutton (TESTING light
178
CT
FUNCTION switch to TIME A + B.
goes off).
161
Multiply value recorded in step 159 by 0.200 and record for
use in step 166.
3-223