Vif Adjustment; Main Unit - Sanyo CZP1662 Service Manual

VIF Adjustment
L
.
;
L
L
.
L
Item 1st Waveform
R701 -A
TP-C
Tuner – TP
TP– L
TP– K
R715 – A (through 330 Q R)
Overall Waveform
DC 15.5V
DC5-8V
Output Probe
Input Probe
Tuning Voltage 12V
DC 15.5V
R701 -A
TP-C
Tuner – TP
TP– L
TP– K
R715 – A (through 330 Q R)
ATT
Oscilloscope Sens.
Output Probe
Dumping Resistor
Setting Band
VR101
O dB
100mV/div
side a
not used
VHF Low Band
clockwise end
100Q
'B
20 dB
100mV/div
side b
TP – D (100 Q resister)
VHF Low Band
clockwise end
1, Adjust P (38.9MHz) is
5'%.
higher than
C(34.47MHz)by using Tuner converter
coil.
Adjust P (38.9MHz) to be
maximum by using T121.
Adjustment
2. Adjust P
k
307. f 107. and C is 25% t
10% by using T1 01.
c
s
Waveform
7 DC15,5V
MAIN UNIT
m 330 "
F
n
,,0
SW251
-r
SERVICE SWITCH
1
3
'!?4 Input Probe
*
Oscilloscope
a
—
--l
&TP-B
AT-
(QI
D
~--- ---- ---- --
An
-511
:ONVERTER
"RANS.
IC451
VERT.
DEF.
!
D
;, Qpjijg!
1st
Waveform ~dj
a
Overall Waveform Adj.
Tune; Converter Coil
Output Probe
~Erker
<' 1111
I
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