Grundig RR 720 CD Serviceanleitung Seite 15

RR 720 CD / RR 760 CD
4. CD Part
Measuring instruments: Oscilloscope, e.g. Test CD 5A.
Function switch: CD
Adjustment
1. Tracking Offset Oscilloscope to testpoint TP3 (TSO) and ground of the
test probe to testpoint TP1 (V. REF).
2. RF Level Oscilloscope to testpoint TP2 (RFO) and ground of the
test probe to testpoint TP1 (V. REF).
Insert Test-CD 5A and play track-number 5.
3. Tracking Balance Oscilloscope to testpoint TP3 (TSO) and ground of the
test probe to testpoint TP1 (V. REF).
Insert and play the CD. Press and hold down button 5 or
6 during the adjustment process.
CD Servo Board
GRUNDIG Service
Preparations
Abgleichvorschriften / Adjustment Procedures
Adjustment Process
±
Adjust to 0V 0.9mV with VR704.
±
Adjust to 1.1V 0.2V with VR701.
pp
With VR702 adjust the signal symmetrically to the zero
line.
±
1.1V 0.2V
pp
A=B
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