Adjustment - Kenwood DP-3080Mk??/3090 Service Manual

DP-3080Mk /3090
No. ITEM
1. WITH PRESSING PLAY/PAUSE ( 6
2. SET THE TEST DISC TO DISC NO SONY YEDS–18. (TYPE4)
FOCUS
1
OFFSET
TRACKING
2
BALANCE
TRACKING
3
GAIN
TP301 pin5-6.
Note:
Type 4 disc : SONY YEDS-18 Test Disc or equivalent.
LPF: Around 47 kΩ+ 390 pF or so.
(e) Tracking gain
TP301
1
2
3
_
4
1.2 kHz 5
50 mVrms
6
+
7
4

ADJUSTMENT

INPUT OUTPUT
SETTING SETTING
6 ) TURN THE POWER ON TO ENTER THE TEST MODE.
CONNECT AN
TEST DISC OSCILLOSCOPE
TYPE 4 to TP301
CH1 : RF(1)
CONNECT AN
OSCILLOSCOPE
TEST DISC
to TP301
TYPE 4
CH1 : TE1(5)
CH2 : VC(4)
Test disc
Connect a LPF to
type4 Apply
TP301 pin 5-6 to
signal of
which you connect
1.2kHz
an oscilloscope or
50mVrms to
AC voltmeters.
GND
+
L.P.F. VTVM
+
L.P.F. VTVM
PLAYER ALIGNMENT
SETTING POINT
VR301
STOP
FE OFFSET
PLAY
SHORT–CIRCUIT
TP2 WITH TP5
VR302
AFTER THE
TE BALANCE
ADJUSTMENT
REMOVE
SHORT–WIRE
VR303
PLAY
TE GAIN
ALIGN FOR FIG.
DC=0V
SYMMETRY
BETWEEN
UPPER AND
LOWER
Two VTVMs
should read the (e)
some value.