Sanyo DC D30 - MANUAL RECORDING AND TAPE DUBBING; Manual CD Recording; Tape Dubbing Procedures

CD ADJUSTMENT
2. Other Adjustment of Tracking Balance (SVR11)
1. Set the service mode(CD tracking balance adjusting mode). Pea im rena
Enter this mode by pressing the PLAY/PAUSE key during sai! iNT i!
tS
: PVG NY Ah
the service mode entry state. Pressing the PLAY /Pause key
in this state turns on the tracking servo and causes playing
to begin. (See service mode)
2. Connect the oscilloscope to TP3 (TE) and TP4 (GND).
3. Adjust SVR11 so that the TE (Traverse) signal waveform of
OV
TP3 on the oscilloscope is vertically symmetrical relative to
OV. Or may adjust SVR11 so that the DC voltage : (Peak
Hold Level) - (Bottom Hold Level) of the traverse signal is
OV. (See figure right side)
4. lf it were not for obtain waveform at the right figure, re-
peat item 2-1 ~2-3.
3. Focus Gain Confirmation
1. Connect the storage scope to TP2 (F.E : Focus Error) 4. Set the output of AF oscillator to 400Hz, 0.5V rms and
through the Band pass filter. (See BPF Figure) connect to pin 24 (iC101) through the resistor : 120k ohms.
2. Turn on the power of the unit. 5. Confirm so that the voltage of the F.E signal waveform
3. Play-back the test disc. on the storage scopeis 0.5V p-p, +3db by through BPF.
*If this CONFIRMATION is imperfect, become weak the mechanical shock, inferior playability, and can not playback the
Disc.
AF OSCILLATOR MAIN PCB OSCILLOSCOPE or STORAGESCOPE
BAND PASS FILTER
400Hz we
0.5V rms
4. Tracking Gain Confirmation
1. Connect the storage scope to TP3(T.E) through the Band 4. Set the output of AF oscillator to 400Hz, 0.5V rms and
pass filter. (See BPF Figure). connect to pin 14(IC101) through resistor 47k ohms.
2. Turn on the power of the unit. 5. Confirm so that the voltage of T.E signal waveform on the
3. playback the test disc. storage scope is 0.5Vp-p, +3db by through BPF.
*If this CONFIRMATION is imperfect, become weak the mechanical shock, inferior playability, and can not playback the Disc.
AF OSCILLATOR MAIN PCB OSCILLOSCOPE or STORAGESCOPE
BAND PASS FILTER
400Hz
0.5V rms
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