-9-
F7JTV
"A"
P
DC 15.5V
AGC voltage (4.3-4.5V)
Output probe
Input probe
Marker frequency
Sweep ATT
0dB=176mVrms/75
SETTING
C644 +
IC201-pin48
IC201-pin45
(Side b)
IC201-pin7
38.9MHz
20dB
Adjustment
By using T141, adjust "P" to
be maximum amplitude.
Waveform
CIRCUIT ALIGNMENT
VIF alignment
0.002
µ
F
75
Ω
1k
Ω
a
b
10k
Ω
Input probe
Output probe
SIF alignment
DC 12V
AGC voltage
Output probe
Input probe
Sweep ATT
Marker Frequency
SETTING
IC3801-pin11
IC3801-pin3
IC3801-pin1
(Side b)
IC3801-pin12
10dB
38.9MHz
Adjustment
1. Adjust AGC voltage to be
"A" = 0.5Vp-p.
2. By using T3801, adjust "P"
to be equal centre line.
Waveform
Oscilloscope
Input sound signal source
TV system
Deviation
Mode
SETTING
IC3401-pin5
System B/G
27kHz
Stereo
Adjustment
By using T3401, adjust
amplitude to be maximum.
Waveform
Pilot alignment
P
A
