Sansui 771 - 4-4. FM Signal Meter, Mono Distortion and Muting Adjustment

FEED SIGNAL MEASURE
STEP ——— ADJUST ADJUST FOR CONDITION
3 | Confirm 88MHz | Same as Step 1 Same as | Same as Confirm olf not, repeat from
Dial Calibration above above 88MHz Dial Step 1
. Calibration
4 | Confirm 98MHz | 98MHz Same as | Same as Confirm
Dial Calibration | ANT input 60dB above above 98MHz Dial
1kHz (100% MOD) Calibration
FM SSG .
5 | Confirm Same as Step 2 Same as | Same as Confirm olf not, repeat from
108MHz above above 108MHz Dial Step 2
Dial Calibration Calibration
6 | 88MHz RF Adj. | 88MHz Same as | Same as LO1, LO2, L03 | Max. output eTune FM SSG (Max.
ANT
input
10dB
above
above
indication
of
Signal
1kHz (100% MOD) Meter)
FM SSG
7 | 108MHz RF Adj. | 108MHz Same as | Same as Trimmer Same as Same as above
ANT input 10dB above above TCO1, TCO2, | above
1kHz (100% MOD) TCO3
FM SSG
4-4. FM Signal Meter, Mono Distortion and Muting Adjustment
(See Fig. 4-9 on page 10)
Note: 1. Selector. ..........-ccc cece cececes FM AUTO
2. Master Volume ..............000. Minimum
FEED SIGNAL MEASURE
STE
BEC.
jo
————.
ADJUST
|
ADJUST
FOR
CONDITION
| sab | FROM [To | OUTPUT J
1 | Signal Meter | 98MHz ANT termi- | Signal Meter | VRO2 4.3 on meter oTune FM SSG (Max.
ANT
input
66dB
nal
indication
of
Signal
1kHz (100% MOD)}| 3000 Meter) : ;
FM SSG ; 5 oBefore adjustment, if
ens
meter
swings
out
or
not
enough,
preadjust
VRO2
until
the
reason-
able point
2 | Distortion Same as above Same as REC OUTL | TOS Min. distortion] oTune FM SSG (Nax.
above
or
R-ch
indication
of
signal
Dist. meter meter)
& Scope
3
|
Muting
Level]
98MHz
Same
as
REC
OUTL
|
VRO3
Audio
signal
oSet
FM
MUTING
sw
itch
ANT
input
24dB
above
or
R-ch
just
muted
to
OFF
(pushed
in)
1kHz (100% MOD) VTVM &
FM SSG Scope
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