Panasonic SG-D16 - RECORDING BIAS ADJUSTMENT (DECK A); ERASE CURRENT ADJUSTMENT (DECK A); ROTATING SPEED ADJUSTMENT; ADJUSTMENT POINTS

RECORDING BIAS ADJUSTMENT (DECK A)
1. Test equipment connection is shown in figure.
2. Insert the normal tape.
3. Press the record and pause buttons.
4. Minimize the input level control and adjust VR355 so
that the output between (L-CH)
(R-CH)} and §AGEREE (L-CH) (RGERZY (R-CH)} is within
the standard.
DECK A Standard value: 4.0~4.5mV
ERASE CURRENT ADJUSTMENT (DECK A)
1. Test equipment connection is shown in figure.
2. Insert the normal tape.
3. Press the record and pause buttons.
DECK A Standard value: 70+5mV
ROTATING SPEED ADJUSTMENT
. Set the speed selector to “33’’.
. Turn the power switch “on” and press the start
button.
. Adjust VR72 so that the turntable platter rotates at
the rated speed. (33-1/3rpm)
. Set the speed selector to “45”.
. Adjust VR71 so that the turntable platter rotates at
the rated speed. (45rpm)
Note: Be sure to adjsut 33-1/3rpm first.
VR71
(45rpm)
VR72
(33-1/3 rpm)
@ ADJUSTMENT POINTS
e Main P.C.B.
Tape speed
VR355
ERASE
CURRENT
| L355
BIAS OSC
® Tuner P.C.B.
(GND) * :
AM ANT coil
MPX VCO L226
° Tape Motor (DECK A, B)
{Motor )
Cassette Tape
speed