Adjustment Parts Configuration; Ant Dummy Circuit For Fm - Kenwood RXD-V555 Service Manual

RXD-V555/V757
NO. CHECKING ITEM
FM FREQ
1.
COVERAGE
2. FM IF
FM FREQ.
3.
TRACKING
CONDITION : AM MOD 30% DEV 400Hz
NO. CHECKING ITEM
AM FREQ
1.
COVERAGE
2. AM IF
AM FREQ.
3.
TRACKING

Adjustment Parts Configuration

IC301
T302
T301
APPLY WAX AFTER
ADJUST L312
T351
7
ADJUSTMENT
SG 'N' SET FREQ
FL 87.5MHz
FH 108.0MHz
- 10.7MHz
- 98MHz
SG 'N' SET FREQ
FL 531KHz
FH 1602KHz
990KHz
FL
(50dB)
990KHz
FL
(50dB)
T303
L312
T306
L354
ADJ
SPEC
POINT
T301
1.3V ± 0.1V
(TP301)
(TP301) 7.8V ± 0.8V
T302
-
(TP302)
L312
-
(TP302)
ADJ DC VOLTAGE
POINT SPEC
T306
1.1V ± 0.1V
(TP301)
(TP301) 8.8V ± 0.5V
T351
-
(TP302)
(TP302)
-

ANT DUMMY CIRCUIT FOR FM

S.G
75 Ω
(50 Ω )
REMARKS
ADJUST UNTIL VOLTAGE IS WITHIN
GIVEN SPEC
CONFIRM VOLTAGE IS WITHIN
GIVEN SPEC.
ADJUST COIL T302 UNTIL MAX.
OUTPUT
* CFM GOOD AND MAX 'S'
CURVE IS OBTAINED.
* CENTER FREQ. MARKER 10.7MHz
ADJUST L312 UNTIL MAXIMUM
WAVEFORM APPEAR.
REMARKS
ADJUST UNTIL VOLTAGE
IS WITHIN GIVEN SPEC.
CONFIRM VOLTAGE IS WITHIN
GIVEN SPEC
SP OUTPUT î ADJ T351 UNTIL MAX
POINT FROM AC VOLTMETER
CONFIRM MAX. OUTPUT.
37.5 Ω (50 Ω )
TO ANTENNA TERMINAL
(50 Ω )
75 Ω
TO GND