Panasonic RX-DS45 - Page 29

RX-DS45
1. Playback mode.
@TAPE SPEED ADJUSTMENT
EQUIPMENT CONNECTION
TEST TAPE ELECTRONIC COUNTER ADJUSTMENT | SPECIFICATION
Headphones Jack (329)
eae
-
Fabricate
the
plug
shown
in
Fig.
2
and
Gecae
6)
3000+90
Hz
2.
Adjust
motor
VR,
for
3000490
Hz
etnies
— the
plug
9.
©-
reading
on
frequency
counter.
@RECORD BIAS CHECK
INDICATOR
ELECTRONIC VOLTMETER
or OSCILLOSCOPE
TEST TAPE ADJUSTMENT SPECIFICATION REMARKS
Lisal (+)
ti! ..(--)
(Shown in Fig. 7.)
Use Metal CrOz tape
and Normal tape
——_= Normal...8+1 mV eRecord mode
e@ ALIGNMENT POINT
Please refer to Circuit Board and Wiring Connection Diagram for test point locations.
LW
ANT
MW
ANT
1G2kHz
S94kHz
Mw ANT
150 SkHz
Fig. 1
To
Headphones
Jack
(+)
~*
To
Measuring
IMQ
—e
Instrument
1K
ee
ne)
R=320
Prd
Foe
,
Motor
VR
{+}
Fig.
2
Fig.
6
/
Keep these cords short. (Line capacitance: 3 pF of less)
ein order not to influence the bias oscillation, divide the
voltage with 1 MQ and 1 kQ resistors, and measure
the voltage across the 1 kQ resistor.
Fig. 7
-39-