TM9-4935-481-14-1
C3
Table 3-14. TTS Performance Test-Continued
Table 3-14. TTS Performance Test-Continued
STEP
UNIT
PROCEDURE
CORRECTIVE ACTION
STEP
UNIT
PROCEDURE
CORRECTIVE ACTION
563
TTS
POWER switch to ON.
580
MCP
Disconnect the thermistor cable from J17.
564
TTS
Momentarily depress TEST START/STOP pushbutton (power on).
581
CT
Momentarily depress RESET pushbutton.
565
TTS
Observe TESTING lamp illuminated.
582
CIP
RUN/HOLD/OFF switch to HOLD.
(49)
583
CIP
COUNTER INHIBIT(SEC) dial to 12.00.
566
CIP
Observe INHIB lamp illuminated.
584
OSC
TIME/DIV switch to 50 ,SEC.
567
MCP
Disconnect 1W14 cable from J17.
585
CIP
Position RUN/HOLD/OFF switch to RUN and then in approximately 7 sec.
568
MCP
Connect the thermistor cable to J17.
OSC
569
MCP
DMM LO switch to EXT.
observe a pulse train > 0.6 V peak.
570
MCP
DMM FUNCTION switch to K OHMS.
(44)
571
MCP
DMM INPUT switch to D[4M INPUT.
586
CT
Observe a reading of 17 to 23 used.
572
DMM
Observe and record the DMM reading.
(44)
573
MCP
DMM FUNCTION switch to VAC.
587
CT
FREQ/TIME/MULT switch to 101.
574
HCP
DMM INPUT switch to SEL A.
588
CT
B INPUT switch to pos.
575
MCP
DMM LO switch to SEL B.
589
TTS
Momentarily actuate TEST START/STOP pushbutton twice (power off,
576
DMM
Observe and record the DMM reading.
then on).
577
Convert the resistance reading recorded in step 572 to a
590
CT
Momentarily depress RESET pushbutton.
591
CIP
Wait until INHIB lamp illuminates.
Record the temperature.
592
CT
Observe a reading of 9.00 to 11.00 msec.
578
Using the IR source, control voltage generator output limits vs.
(44)
593
CIP
RUN/HOLD/OFF switch to HOLD.
minimum, and nominal values of the output for the temperature
594
CIP
COUNTER INHIBIT(SEC) dial to 17.01.
recorded in step 577.
595
CIP
RUN/HOLD/OFF switch to RUN.
579
Verify the value recorded in step 576 lies between or is equal
596
CIP
Observe INHIB lamp illuminated.
to the maximum and minimum values recorded in step 578.
597
DMM
Observe a reading of < 0.3320 Vac.
(38)
598
TTS
Momentarily actuate TEST START/STOP pushbutton (power off).
3-237