— 10 —
Procedure:
1.
Supply a 25 dB 98 MHz signal from the ANTENNA terminal.
2.
Tune the set to 98 MHz.
3.
Adjust RV42 to the point (moment) when the TUNED indicator
will change from going off to going on.
Adjustment Location: TCB board
TUNER SECTION
0dB=1
µ
V
Note 1:
As a front-end (FE1) is difficult to repair if faulty, replace
it with new one.
Note 2:
No adjustment is needed for a tuner pack except for AEP,
UK, East European, CIS models.
AM Tuned Level Adjustment
(AEP, UK, East European, CIS model)
Note: FM Tuned Level Adjustment should be performed after this
AM Tuned Level Adjustment.
Setting:
Band: MW
Procedure:
1.
Set the output of SSG so that the input level of the set becomes
55 dB.
2.
Tune the set to 999 kHz or 1,050 kHz.
3.
Adjust RV41 to the point (moment) when the TUNED indicator
will change from going off to going on.
Adjustment Location: TCB board
FM Tuned Level Adjustment
(AEP, UK, East European, CIS model)
Note: This adjustment should be performed after the AM Tuned
Level Adjustment.
Setting:
Band: FM
FM ANTENNA terminal (TM1)
FM RF SSG
75
Ω
coaxial
Carrier frequency: 98MHz
Modulation:
AUDIO 1kHz, 75kHz
deviation (100%)
Output level:
25dB (at 75
Ω
open)
set
loop antenna
AM RF SSG
loop antenna
(Supplied accessories)
30% amplitude
modulation by
400Hz signal
Modulation: 999 kHz (at 9 kHz step)
1,050 kHz (at 10 kHz step)
60cm
AM antenna
terminal (TM1)
set
Field strength dB (
µ
V/m) = SSG output level dB (
µ
V/m) –26dB.
RV41
AM Tuned Level
TM1
RV42
FM Tuned
Level
IC21
Adjustment Location
[TCB BOARD] (Component Side)
SECTION 4
ELECTRICAL ADJUSTMENT
Содержание STR-W777
Страница 26: ...5 10 SCHEMATIC DIAGRAM AV MIC SECTION Refer to page 58 for IC Block Diagrams 35 ...
Страница 27: ...5 11 Printed Wiring Board AV MIC Section Refer to page 12 for Circuit Boards Location 36 ...
Страница 28: ...STR W777 5 12 SCHEMATIC DIAGRAM POWER AMP SECTION 37 38 ...
Страница 30: ...STR W777 5 14 SCHEMATIC DIAGRAM DISPLAY SECTION Refer to page 59 for IC Block Diagrams 41 42 ...
Страница 32: ...STR W777 5 16 SCHEMATIC DIAGRAM SLIDING PANEL SECTION Refer to page 59 for IC Block Diagrams 45 46 ...
Страница 33: ...STR W777 5 17 PRINTED WIRING BOARD SLIDING PANEL SECTION Refer to page 12 for Circuit Boards Location 47 48 ...
Страница 34: ...STR W777 5 18 SCHEMATIC DIAGRAM SURROUND AMP SECTION 49 50 ...
Страница 36: ...STR W777 5 20 PRINTED WIRING BOARD TRANS SECTION Refer to page 12 for Circuit Boards Location 53 54 Page 40 ...
Страница 37: ... 55 5 21 SCHEMATIC DIAGRAM TRANS SECTION STR W777 ...