Sansui TU 417 Service Manual

Page 2

1. BLOCK DIAGRAM

FM FRONT END FM DESCRIMINATOR W
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2. ADJUSTMENTS g,

2-1. AM IF Adjustment & Dial Calibration (See Top View on page 4)

Note: 1. Selector ....................... AM "V scope GENE 5m" gmund
AM ssc umr -7a
TAPE - O
c 5..- Agmr REg r--- lg mg ,0... g
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FEED SIGNAL MEASURE
STEP SUBJECT FROM TO OUTPUT ADJUST ADJUST FOR REMARKS V
1. IF Coil Genescope TCOS lead wire of T05 Max. IF
Output 70 dB F-2953 R62 F-29S3 F-2953 waveform
2. 600 kHz 600 kHz AM ANT OUT T04
Dial ANT Input 60 dB terminal L or R-CH F-2953 .4 my ,.I .l
Calibration 400 Hz (MOD 30%) VTVM & Scope 5
AM 556 Max. Indication
on Signal Meter fl
1400 kHz 1400 kHz Same as Same as above TCOS 8: V.T.V.M.
Dial ANT Input 60 dB above F-2953
Calibration 400 Hz (MOD 30%)
AM 556
3. 600 kHz 600 kHz Same as Same as above Bar Same as above
RF Adj. ANT Input 50 dB above Antenna
400 Hz (MOD 30%) L701
AM SSG
1400 Hz 1400 kHz Same as Same as above ITC04 Same as above J V
RF Adj. ANT Input 50 dB above F-2953
400 Hz (MOD 30%) '
AM 556 V
4. Signal Meter 1000 kHz Same as Signal Meter VR04 4.3 on meter , ,
volume ANT Input 80 dB above F-2953 ( z 3 . 5
400 Hz (MOD 30%) ( M
AM 556