Sharp VC-384N Serviceanleitung Seite 19

4) EE LEVEL adjustment
(A)
1. Apply signal of 1kHz, 0.22Vp-p (-20dBz) to the
audio input terminal (L. ch).
. Select record mode.
. Short-circuit TP601 and GND.
. Connect VTVM to TP6601.
. Adjust R606 so that the output level become
-5dBm.
rn BW bo
(B)
1. Apply signal of 1kHz, 0,22Vp-p (-20dBs) to the
audio input terminal (Rch).
. Select record mode.
. Short-circuit TP651 and GND.
. Connect VTVM to TP6602.
. Adjust R656 so that the ouput level become
~SdBs.
Mm BW bd
5) Rec Bias adjustment
(A)
1. Select record mode.
19
2. Connect a VTVM across R8011.
3. Adjust R622 so that the bias current become
320uA. (The voltage across R8011 is 3.2mVrms).
(B)
1. Select record mode.
2. Connect a VT VM across R8010.
3. Adjust R672 so that the bias current become
320A.
6) Rec LEVEL adjustment
(A)
1. Select record pause mode.
2. Connect a VTVM across R8011.
3. Adjust R614 so that the record current become
25uA. (The voltage across R8011 is 0.25m Vrms).
(B)
1. Select record pause mode.
2. Connect a VTVM across R8010.
3. Adjust R664 so that the record current become
25uA.