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Manuals
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Sharp Manuals
Portable TV
10P-18G
Service manual
Sharp 10P-18G Service Manual page 15
Solid state portable tv, radio and cassette recorder
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Sone
5. Adjust the bias-adjust control RB61 so that when the
beat cut switch is set at "A" position, the bias current
will be 400 wA (say, corresponding to 4 mVrpm indicat-
ed by VTVM at the measuring point TP-B1).
6. Check that the bias oscillation frequency is within 62
kHz + 1 kHz.
'e)
° PLAY (Wiedergabe)
0.5 ~ 5 gcm
° FF (Schnellvorlauf)
0.56 ~
5 gcm
° REW
(Riickspulen)
0.5 ~
§ gm
Figure 15
Abb. 15
Shield Plate
Abgeschirmbiichse
5. Den Vormagnetisierungsregler RB61
so einstellen, daf
bei Einstellung des Interferenzunterdriickungsschalters
auf ,,A" die Vormagnetisierungsstromstdrke 400 yA be-
tragt (entsprechend 4 mVrms, durch das Rodhrenvolt-
meter am Priifpunkt TP-B1 angezeigt).
6. Nachpriifen, ob die Vormagnetisierungs-Schwingungsfre-
quenz innerhalb von 62 + | kHz liegt.
Rec/PB Head
Aufnahme/Wiedergabe-
Tonkopf
Adj. Screw
Einstellschraube
Figure 16
Abb. 16
VTVM
Rohrenvoltmeter
Frequency Counter
Frequenz nur addierendes od. Subtrahierendes Zahiwark
Figure 17
Abb. 17
—15—
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