Grundig GDM5051 Serviceanleitung Seite 18

Abgleichvorschriften / Adjustment Procedures
3. CD Part
Measuring instruments: Oscilloscope, Test CD (e.g. 5A).
Adjustment
1. RF Level Oszilloscope to testpoint RF and ground of the test
probe to testpoint VREF.
Insert Test-CD 5A and play track-number 5.
2. Tracking Balance Oszilloscope to testpoint TG and ground of the test
probe to testpoint VREF.
Play a CD. Press and hold down button 5 or 6 during the
adjustment process.
2 - 6
Preparation
CN3
IC3
VR1
VREF
RF
IC2
VR2
CN12
Adjustment Process
Adjust to maximum and clear eye pattern with VR1 .
With VR2 adjust the signal symmetrically to the zero line.
0 DC
IC4
IC1
TG
CN401
CN4 CN5
CDM 900
A
A=B
B
GRUNDIG Service