43
6.7 ELECTRICAL ADJUSTMENT
1
18MHz Master Clock Adjustment
•
Normal mode
•
Power ON
Frequency counter
Player
START
VC301
AVJB ASSY
27MHz
±
20Hz
DVDM ASSY
IC813
CH1
CH2
(X)
(Y)
Oscilloscope
V: 50mV/div.
H: 10msec/div.
DC mode
TV trigger
VCO Offset Adjustment
•
Normal mode
•
Play the DVD test disc
Probe (10:1)
VC301
DVDM ASSY
Player
DVDM ASSY
START
1.9V
±
0.1V
2
GND
IC302 1
6