Harman Kardon FL8400 - Page 24

FL8400
[_Seting [Adjust [Remar
PLL Pics Locked Loop) Adjustment.
re
See
figure
16
|
In
TEST
vR101
|
Counter
reading
should
be
4.3218
MHz
MODE
0
| 2 | Disconnect between J304 (GND) and R225 (ASY).
— Check the counter reading to be 4.3218 +0.0025 MHz in TEST MODE 0.
EF Balance Adjustment
1 See figure 17 In TEST
MODE 1
Turn a disc
gently with you
finger and
adjust VR105
to obtain a
symmetrical
waveform.
VOLTIDIV: 1V
TIME/DIV: 1 ms
Obtain a symmetrical waveform.
| 3 | The above adjustments must be made very carefully, as misadjustment may cause skipping.
Frequency Counter Set Oscilloscope Set
J304
(G)O
J184
(PLCK)
J304
(G)q
O
R225
(ASY)
C163
(T.E)
O
Figure 16. PLL Adjustment Figure 17. EF Balance Adjustment
24