15
CSD-TD10/TD30
Adjustment Location:
CD SECTION
CD section adjustments are done automatically in this set.
In case of operation check, confirm that focus bias.
FOCUS BIAS CHECK
1. Connect the oscilloscope between IC402 pin
qf
and pin
qh
.
2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01)
3. Press the
N
X
(CD) button.
4. Confirm that the oscilloscope waveform is as shown in the
figure below. (eye pattern)
A good eye pattern means that the diamond shape ( ) in the
center of the waveform can be clearly distinguished.
• RF signal reference waveform (eye pattern)
Test Point:
RF level :
0.85
±
0.2 Vp-p
VOLT/DIV : 50 mV (10 : 1 probe in use)
TIME/DIV : 500 nS
When observing the eye pattern, set the oscilloscope for AC range
and raise vertical sensitivity.
— MAIN board (component side) —
TC101
L108
FM FREQUENCY
COVERAGE
ADJUTSTMENT
L101
AM FREQUENCY
COVERAGE
ADJUTSTMENT
L102
FM ANT
L301
C103
TP(VT)
L106
L101
CN801
SPK2
SPK1
L102
FM TRACKING
ADJUSTMENT
L106
AM IF
ADJUSTMENT
L103,TC101
AM TRACKING
ADJUSTMENT
13
12
24
1
C409
C455
R426
R427
R429
C840
C452
R431
JW115
JW114
C410
C453
C442
C441
R428
C419
C438
JW119
C439
JW117
R423
R424
R421
R422
R420
R419
C436
C422
R320
R848
JW201
R409
R411
R410
R412
C415
C411
C416
C414
C423
C420
C421
R414
R449
R432
R417
C468
L404
R819
R818
D808
IC402
JW138
JW122
JW187
– MAIN board (conductor side) –
IC402 pin 16
IC402 pin 14
Содержание CSD-TD10
Страница 16: ...16 CSD TD10 TD30 MEMO ...
Страница 47: ...47 CSD TD10 TD30 MEMO ...