SERVICING
70-1341/1344/1441/1444
4 - 11
Troubleshooting Chart 3 – 4b — Receiver Problem (Continued)
NO
NO
YES
NO
NO
YES YES
YES
YES
NO
YES
No squelch?
Suspect RV402
45 MHz
at XF201,
L215, L216
and L217?
NO
NO
NO
YES
YES
Signal
distorted?
44.545 MHz
at X201?
1
NO
RV402 OK?
IC402
pin 6 goes
Low to High
adjusting
squelch?
Suspect IC402
Suspect Q203
Suspect Q204
Suspect X201
Check IC401
and IC404
NO
YES
Signal
present at
Q203?
Suspect XF201,
L215, L216
or L217
DONE
2
IC202 OK?
Suspect IC202
Suspect IC408
Suspect IC405
YES
IC408
pin 7 goes
Low to High
adjusting
squelch?
Q204 OK?
Suspect IC202
Содержание 70-1341
Страница 4: ...iv...
Страница 7: ...SECTION 1 GENERAL INFORMATION...
Страница 8: ...GENERAL INFORMATION 70 1341 1344 1441 1444 NOTES 1 2...
Страница 12: ...GENERAL INFORMATION 70 1341 1344 1441 1444 1 6 NOTES...
Страница 13: ...SECTION 2 PREPARATION...
Страница 14: ...PREPARATION 70 1341 1344 1441 1444 NOTES 2 2...
Страница 19: ...SECTION 3 INSTALLATION...
Страница 20: ...INSTALLATION 70 1341 1344 1441 1444 NOTES 3 2...
Страница 24: ...INSTALLATION 70 1341 1344 1441 1444 NOTES 3 6...
Страница 25: ...SECTION 4 SERVICING...
Страница 26: ...SERVICING 70 1341 1344 1441 1444 NOTES 4 2...
Страница 39: ...SECTION 5 CIRCUIT DESCRIPTION...
Страница 40: ...CIRCUIT DESCRIPTION 70 1341 1344 1441 1444 NOTES 5 2...
Страница 46: ...CIRCUIT DESCRIPTION 70 1341 1344 1441 1444 5 8 NOTES...
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Страница 59: ...SECTION 7 PARTS...
Страница 60: ...PARTS 70 1341 1344 1441 1444 7 2 NOTES...