CSD-XD55
Adjustment Location:
CT3,L3-2CT5, L3-2
AMLW
TRACKINGTRACKING
ADJUSTMENTADJUSTMENT
� MAIN board (component side) �
L3-2L3-1
L1CT1CT1, L1
FMTP (VT)
TP (FM IN)TRACKINGCT5(CONDUCTOR SIDE)
(CONDUCTOR SIDE)
ADJUSTMENT
CT3
T1T1
AM<MW>L2
IF
L4L4
ADJUSTMENT
AM<LW>CT3, L3-1
FREQUENCYMW
COVERAGETRACKING
IC1
ADJUSTMENTADJUSTMENT
T2T2IC2
FM
IF
ADJUSTMENTL2
FM
FREQUENCY
COVERAGE
ADJUSTMENT
CD SECTION
CD section adjustments are done automatically in this set.
In case of operation check, confirm that focus bias.
oscilloscope
FOCUS BIAS CHECKTest Point:
1. Connect the oscilloscope between TP (RF) and TP (VREF).
2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01)TP(RF)
3. Press the N X (CD) button.TP(VREF)
4. Confirm that the oscilloscope waveform is as shown in the
figure below. (eye pattern)
� CD board (conductor side) �
A good eye pattern means that the diamond shape ( ) in
R711JW725
the center of the waveform can be clearly distinguished.C704
R710
R713R729R734C731
R736
R733
Y RF signal reference waveform (eye pattern)R706R708
C705TPJW726
R735R709(RF)
TPC703
R701
VOLT/DIV : 50 mV (10 : 1 probe in use)(VREF)
C743
TIME/DIV : 500 nS
C739
C736
C734
JW708
C707
RF level :
JC703
0.85 ? 0.2 Vp-pC742
JW709IC701
C708
732
JW707
When observing the eye pattern, set the oscilloscope for AC range
and raise vertical sensitivity.
JW706
C709
C711
R723
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