Sony cfd-s27 Service Manual page 11

• Incorrect Examples (DC level changes more than on adjusted
waveform)
low focus gain
high focus gain
[MAIN BOARD]
VOLT/DIV : 100mV
5. Connect oscilloscope to TP (TO) and TP (VC) on MAIN board.
TIME/DIV : 2ms
6. Adjust RV704 on MAIN board so that the waveform is as shown
100mV
0V
• Incorrect Examples (fundamental waveform appears)
VOLT/DIV : 100mV
TIME/DIV : 2ms
200mV
0V
VOLT/DIV : 100mV
TIME/DIV : 2ms
75mV
0V
TP (FO)
TP (TO)
TP (VC)
– 11 –
in the figure below. (Tracking gain adjustment)
low tracking gain
high tracking gain
High fundamental wave
(
than for low gain
oscilloscope
(DC range)
VOLT/DIV : 1V
TIME/DIV : 2ms
0V
VOLT/DIV : 1V
TIME/DIV : 2ms
0V
)
VOLT/DIV : 1V
TIME/DIV : 2ms
0V