53
©2011 Broadcast Electronics
components.
NO 100% MODULATION INDICATOR
1.
Check integrated circuit U18.
2.
Check transistors Q5 and Q6.
ENTIRE MODULATION DISPLAY IS
ILLUMINATED
1.
Check +7.5V reference voltage circuit U17.
NO X10 METER INDICATOR
1.
Check X10 indicator DS1.
NO EXPANDED SCALE METER OPERATION
1.
Check FET switch Q7 and associated
components.
NO X10 METER INDICATOR AND EXPANDED
SCALE METER OPERATION
1.
Check integrated circuit U1A/U1B and
associated components.
NO 5% TO 50% METER INDICATORS
1.
Check display DS10.
2.
Check display driver U20.
NO MULTIMETER FUNCTION SWITCH
OPERATION
1.
Check integrated circuit U8A.
2.
Check integrated circuit U9.
3.
Check integrated circuit U10.
4.
Check integrated circuit U11.
NO PAV MULTIMETER FUNCTION
1.
Check PAV switch S3.
2.
Check input switch U6B.
NO FWD POWER FUNCTION SELECTED
WHEN PRIMARY POWER IS APPLIED
1.
Check integrated circuit U8B.
2.
Check transistor Q4 and associated
components.
NO MULTIMETER FUNCTION AND UNTI
MEASURE INDICATORS
1.
Check integrated circuit U12.
NO FWD POWER METER INDICATION
1.
Check input switch U3A.
NO FWD AND RFL POWER METER
INDICATION
1.
Check input switch U6A.
2.
Check integrated circuit U4A and associated
components.
NO LCD DISPLAY
1.
Check integrated circuit U7.
2.
Check display DS12.
Содержание FX-50
Страница 12: ...x 2011 Broadcast Electronics This page intentionally left blank ...
Страница 20: ...8 2011 Broadcast Electronics Figure 2 1 FX 50 E REAR PANEL CONNECTIONS SHEET 1 OR 2 ...
Страница 21: ...9 2011 Broadcast Electronics Figure 2 1 FX 50 E REAR PANEL CONNECTIONS SHEET 2 OR 2 ...
Страница 32: ...20 2011 Broadcast Electronics Figure 3 1 FX 50 E CONTROLS AND INDICATORS ...
Страница 35: ...23 2011 Broadcast Electronics Figure 4 1 FX 50 E OVERALL SIMPLIFIED SCHEMATIC ...
Страница 40: ...28 2011 Broadcast Electronics Figure 5 1 FX 50 E ASSEMBLY ...
Страница 46: ...34 2011 Broadcast Electronics Figure 6 1 CONTROL CIRCUITRY SIMPLIFIED SCHEMATIC ...
Страница 49: ...37 2011 Broadcast Electronics Figure 6 2 POWER SUPPLY SIMPLIFIED SCHEMATIC DIAGRAM ...
Страница 53: ...41 2011 Broadcast Electronics Figure 6 4 PARALLEL LOAD CONNECTION ...
Страница 56: ...44 2011 Broadcast Electronics Figure 6 5 NO PA VOLTAGE TO THE RF AMPLIFIER ...
Страница 58: ...46 2011 Broadcast Electronics Figure 7 1 METERING CIRCUIT REMOVAL AND INSTALLATION DIAGRAM ...
Страница 60: ...48 2011 Broadcast Electronics Figure 7 2 METTERING BOARD SIMPLIFIED SCHEMATIC ...
Страница 68: ...56 2011 Broadcast Electronics Figure 8 1 MODULATED OSCILLATOR SIMPLIFIED SCHEMATIC DIAGRAM ...
Страница 74: ...62 2011 Broadcast Electronics Figure 9 1 AFC PLL CIRCUIT BOARD SIMPLIFIED SCHEMATIC ...
Страница 81: ...69 2011 Broadcast Electronics Table 9 2 FREQUENCY SYNTHESIZER PROGRAMMING ...
Страница 84: ...72 2011 Broadcast Electronics Figure 9 4 NO RF OUTPUT LOCK IS EXTINGUISHED ...
Страница 85: ...73 2011 Broadcast Electronics Figure 9 5 NO MODULATION LOCK INDICATOR ILLUMINATED ...
Страница 89: ...77 2011 Broadcast Electronics Figure 10 1 RF AMPLIFIER SIMPLIFIED SCHEMATIC ...
Страница 92: ...80 2011 Broadcast Electronics Figure 10 2 RF AMPLIFIER CIRCUIT BOARD CONTROLS ...
Страница 95: ...83 2011 Broadcast Electronics Figure 10 3 RF AMPLIFIER TROUBLESHOOTING INFORMATION ...
Страница 100: ...88 2011 Broadcast Electronics Figure 11 1 SLAVE FM BOOSTER SIMPLIIFED SCHEMATIC ...
Страница 101: ...89 2011 Broadcast Electronics Figure 11 2 MASTER FM BOOSTER SIMPLIFIED SCHEMATIC ...
Страница 161: ...149 2011 Broadcast Electronics Figure 14 1 OPTIONAL LOW PASS FILTER ASSEMBLY ...
Страница 162: ...150 2011 Broadcast Electronics Figure 14 2 EXCITER FRONT RAIL MOUNTING APPLICATIONS ...
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