TM9-4935-481-14-1
Table 3-11. DMS-D
Performance Test-Continued
Table 3-11. DMS-D (10275000) Performance Test-Continued
STEP
UNIT
PROCEDURE
CORRECTIVE ACTION
STEP
UNIT
PROCEDURE
CORRECTIVE ACTION
1334
TKP
Adjust FREQ control slowly ccw to 4.5 0.01 kHz. Observe the
0
Replace card A22. Check A22 pins
CT
30, 18, 28 and 24.
DMM
reading remains between 0.0970 to 0.1030 Vac while changing
1344
MCP
Disconnect 1W9 from J17 and J11.
the frequency.
(149)
1 KHz Square Wave Amplitude Check
1345
ITP
INTERNAL TEST switch to 9.
Tracker Detector Sim. A Continuous (+) Level
1346
MCP
SELECTOR B switch to I-22.
1347
MCP
Connect 1W20-Pl to J10.
1335
MCP
DMM INPUT switch to DMM INPUT.
1348
OSC
Connect 1W20-P2 to the CHANNEL A INPUT.
1336
MCP
DMM LO switch to EXT.
1349
OSC
A input VOLTS/DIV switch to .05.
1337
ITP
INTERNAL TEST switch to 6.
1350
OSC
TIME/DIV switch to .1 MSEC.
1338
TKP
Observe the DMM reading remains between 0.0981 and 0.1041 Vac
1351
OSC
Disconnect cable between CHANNEL A OUTPUT and CHANNEL B INPUT.
while adjusting FREQ control slowly cw to 12.00 0.01 kHz.
1351.1
OSC
MODE switch to A.
1352
OSC
Observe the display measures between 0.266 and 0.306 VP-P.
(Ignoring overshoot)
1339
MCP
Disconnect 1W9 from J10 and connect it to J11.
(151)
1353
OSC
TIME/DIV switch to 1.0 PSEC.
Tracker Detector Sim. B. Continuous (+)1 Level
1354
OSC
Observe that signal rise time between -0.10 to +0.10 Vdc and
1340
ITP
INTERNAL TEST switch to 7.
signal fall between +0.10 to -0.10 Vdc 5 psec.
is
1341
TKP
Observe the DMM reading remains between 0.0981 and 0.1041 Vac
Replace card A19. Check A19 pins
CT
50 and 114.
while adjusting the FREQ control slowly ccw to 4.50 0.01 kHz.
1355
MCP
Disconnect cable 1W20 from J10 and the oscilloscope.
Replace card A22. Check A22 pins
30, 26 and 24.
Tracker Control
Tracker Detector Sim. B Continuous (-) Level
1356
Return all switches tohe initial switch settings, leaving the
t
MAIN POWER and DMS switches ON.
1342
ITP
INTERNAL TEST switch to 8.
1343
TKP
Observe the DMM reading remains between 0.0981 and 0.1041 Vac
1357
MCP
SELECTOR A switch to F16.
while adjusting the FREQ conol slowly cw to 12.00 0.01 kHz.
rt
3-125