Grundig CDM 800 Service Manual page 18

Abgleichvorschriften / Adjustment Procedures
3. CD Part
Measuring instruments: Oscilloscope, Test CD (e.g. 5A).
Adjustment
Oszilloscope to testpoint RF and ground of the test
1. RF Level
probe to testpoint VREF.
Insert Test-CD 5A and play track-number 5.
Oszilloscope to testpoint TG and ground of the test
2. Tracking Balance
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 cleareye pattern with VR1 .
With VR2 adjust the signal symmetrically to the zero line.
0 DC
IC4
IC1
TG
CN401
CN4 CN5
CDM 800
A
A=B
B
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