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Page Title:
INTERPOLATION OSCILLATOR CRYSTAL CHART |
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|  TM 11-5820-401-34-3/0967-LP-432-3060
4-12. GROSS TROUBLESHOOTING PRELIMINARY INSTRUCTIONS. (CONT)
INTERPOLATION OSCILLATOR CRYSTAL CHART
The following chart is used to isolate the particular crystal responsible for audio failure in the same
100-kHz segment for each MHz of tuning. In this failure mode, if audio is absent at 30.05 and 30.10,
it will be absent at 40.05 and 40.10; 50.05 and 50.10; etc.
INTERPOLATION OSCILLATOR CRYSTAL CHART
SEGMENT OF KC CONTROL
CAUSE
WHERE AUDIO IS ABSENT
CORRECTION
Crystal
Y2007
Replace
A2000
assembly.
05 and 10
Crystal
Y2008
15 and 20
Replace
A2000
assembly.
Crystal
Y2009
Replace
A2000
assembly.
25 and 30
Crystal
Y2010
Replace
A2000
assembly.
35 and 40
Crystal
Y2005
Replace
A2000
assembly.
45 and 50
Crystal
Y2004
Replace
A2000
assembly.
55 and 60
Crystal
Y2003
Replace
A2000
assembly.
65 and 70
Replace
A2000
assembly.
Crystal
Y2002
75 and 80
Replace
A2000
assembly.
Crystal
Y2001
85 and 90
Replace
A2000
assembly.
Crystal
Y2006
95 and 100
4-32
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