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1. Focus Offset Adjustment a) Connect an oscilloscope between test points (FEl) and (VREF). b) Turn on the main power to the CD player (CD STOP). c) Adjust SFR302 so that the Offset level becomes OmV with reference to VREF. 2. Focus Bias Adjustment a) Connect an oscilloscope to test points (RFO) and (VREF). b) Insert test disc TCD�782 (YEDS-18) and PLAY BACK track No.2. c) Adjust SFl1301 so that the level of RF wave to be Maximum and clear.
3. Tracking Balance Adjustment a) Connect an oscilloscope to test points (TSO)and (VREF). b) PLAY BACK test disc TCD-782 (YEDS-18). c) With F> or<< button pressed, adjust SFR304 so that the wave form on the oscilloscope is vertically symmetrical.
A = B (OK)
I
EYE PA~ERN must be CLEAR VOLT/DIV:50mV TIME/DIv:o.5 p s
MAX 1.4*().Ivp.p
A # B (NG) VOLT/DIV:20mV TIME/DIV: 1p S DC LEVEL
Note : Test points (VREF), (FEl),( RFO),(TSO) arejumperwires are indicated on the PCB. (Refer to circuit diagram).
