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CCU-590/P/V1(E)
4-31
Mechanical
center
Position (a)
(a)
Position (b)
Set to the center
(a)
(b)
=
=
CN902
S1
S2
S363
E1
E101
E102
E300
E701
E801
LV101
LV201
LV301
LV302
LV401
LV402
LV601
LV602
LV901
LV902
RV101
RV201
RV301
RV401
RV41
RV601
RV701
RV801
RV901
RV902
TP1
TP101
TP201
TP202
TP21
TP301
TP302
TP401
TP402
TP41
TP701
TP801
TP901
A
B
C
D
E
F
G
1
2
3
4
TR-133B BOARD (SIDE A)
E100
A
GND
4-6-14. CHU DATA Demodulation Adjustment
Adjustment category:
C
Notes:
.
Perform this adjustment together with the already
adjusted CA-590/590P.
.
Perform this adjustment only after replacing IC201 and/
or
1
LV201 (5.6M TUNE) on the TR-133B board.
Measuring instrument:
Oscilloscope
20 MHz BW Limit: ON
Input mode:
DC
Extended board:
TR-133B board
Measurement point:
TP201 (GND: E1)/TR-133B board
Adjustment point:
1
LV201 (5.6M TUNE)/TR-
133B board
Specification:
A =
+
0.50
±
0.02 V dc
4-6-15. CHU TONE Adjustment
Adjustment category:
C
Measuring instrument:
Oscilloscope (set to AC mode)
Extended board:
TR-133B board
Measurement point:
TP202 (GND: E1)/TR-133B
board
Adjustment point:
1
RV201 (TONE ADJ)/TR-
133B board
Adjustment procedure:
1.
Set the oscilloscope as follows.
.
HORIZ/DIV: 20 mS/DIV
.
VOLTS/DIV: 100 mV/DIV
.
Input mode: AC
2.
Turn slowly
1
RV201 clockwise
2
from the mechani-
cal center while watching the oscilloscope, and record
the wave starting position (a).
3.
Turn slowly
1
RV201 counterclockwise
3
while
watching the oscilloscope, and record the wave
starting position (b).
4
Set
1
RV201 to the center of (a) and (b).