UMS 200
Abgleichvorschriften / Adjustment Procedures
GRUNDIG Service
2 - 6
CD
Test equipment:
Oscilloscope, Digital Voltmeter, Test CD
Adjustment
Preparation
Adjustment Procedure
1. RF Gain
2. EF Balance
3. Tracking Offset
Oscilloscope
to
Testpoints
H
and
I
(GND).
Insert CD and start Play.
Oscilloscope
to
Testpoints
J
and
I
(GND).
Insert CD and start Play.
Press and hold depressed the button
T
.
Digital Voltmeter
to
Testpoints
J
and
I
(GND).
CD STOP.
Set VR4 to Center Position.
With
VR1
i
adjust for
maximum
Signal.
With
VR2
j
adjust for
symmetric
Signal.
A
B
A=B
With
VR3
u
adjust for
0V
±
100mV
.
With
VR4
r
adjust for
0V
±
5mV
.
i
j
u r
I
J
H
