JVC PC-W150 - Page 13

PC-W150 B/E/G/G!
Main Adjustments
@ Equipment and Measuring Instrument used for Adjustments
Electronic voltmeter Wow-flutter meter torque testing cassette gauge CTG-N
Audio frequency oscillator Frequency counter Alignment tape
Attenuator Standard signal generator Measuring tape : TS-8 (UR)
VTT702 (8 kHz)
@ Condition for Measurements
Power Supply ........ AC 110~ 120/220~ 240 V : (50/60 Hz)Function position .... TAPE/FM MODE : TAPE NORMAL
DC 12V FUNCTION : NORMAL SPEED
Reference output ... Speaker : O dBs (0.775 V)/3 Q SEA : Center
Headphone : — 10 dBs (0.245 V)/32 Q 3D : OFF
Reference Input ..... Ext. MIC : —58dBs BEAT CUT : NORMAL
DC IN : -5 dBs
@ Condition for Measurement: Tuner Sections Attentive point
Supply voltage : DC 12 V or AC 110—120/220 ~ 240 V Connection of IF sweeper :
Applied voltage of the Tuner : DC 6.5 V Connect a 30 pF capacitor and a 33 kQ resistor in series
Reference output : Speaker ; 50 mW (0.4 V)/3 0 to the sweeper’s output while 0.082 »F capacitor and
Input signal : (AM) modulation frequency; 400 Hz, 30% a 100 kQ resistor in parallel to the input.
(FM) Modulation frequency; IF sweeper’s output level :
400 Hz, 22.5 kHz dev. Set as minimum as enough for adjustment.
Set position of Volume and Switch : SEA; Center FM MPX adjustment :
For this adjustment, connect a 100 kQ resistor in series
to a frequency counter’s input.
Dummy antenna for short wave.
Loop Antenna
P ANT! A
AM SSG LOOP ANTENN
a a BAR ANT.
60cm |
Fig. 8-1
Lod length
(cm)
|_ C1 (PE)
R1+R2=80 2 R1 : Output impedance of SSG.
12 (No. 1785)