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3. SOUND CARRIER (NICAM)
Adjustment Parts
Checking Point
L108
• Connection Method
#3
J1
L105
IC101
#2
#3
GND
SIGNAL
GENERATOR
• Adjustment Procedure
1) Supply +12V DC to Pin No.1 and GND to pin No. 2 of P102
2) Supply +5V DC to Pin No.3 GND to Pin No. 1 of P101.
3) Connect the signal generator output to pin 3 and GND to pin 2 of p102
4) Connect the oscilloscope to TP3.
5) Adjust L108 to obtain the minimum noise, minimum level of TP3.
Measuring Equipment
TP3
minimum
noise
level
#2
97P651111A
P102
TP1
L108
S2
J7
TP4
L103
TP2
TP3
J4
Z101
J19
fc: 39.5MHz (I)
OUT
38.9MHz (B/G)
fm: 15.625KHz (30% AM MODULATION)
Output Level:80 dBµV (75Ω loaded)
Condition of Adj.
Oscilloscope
Signal Gen
C161
R163
J15
D101
C178
C176
C182
C155
IC104
13
Input Signal
Refer to the
EE Mode
followings
P101
CH-1
Oscilloscope
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