Alignment Instructions - JVC NIVIDO 3240GM Service Manual

ALIGNMENT INSTRUCTIONS
PRE-ALIGNMENT
PIX IF ALIGNMENT
TEST EQUIPMENTS
a. Sweep generator
b. Marker generator
c. Oscilloscope
d. 2~4 Volts Battery (for AGC)
PREPARATION BEFOR ALIGNMENT
deflection. | 7
Set the channel selector to any
non-interfering
channel, connect
a BIAS
Sipsiy (3 volts) to the IF AGC
line TP-3,-
and adjust the IF transformer in chart 1 to obtain a response curve.
PIX IF ALIGNMENT PROCEDURE
ee
TP-4
=< 34.4 MHz 60 ~ 80%
TP-4 oS
TP-2 |
38.9 MHz 60~80%
40.4 MHz MIN.
TP-1
33.4 MHz MIN.
Through 2000pF | Through 1s5KQ |
capacitor resistor
REMARK
34.4MHz
60~80% 70~50%
33.4MHz 40.4MHz
|
Fig. 9A
|
Fig. 9B.
As to marker positions of 36.7MHz
on each wave form, please refer to PIX IF alignment procedure
table.
SOUND IF ALIGNMENT
TEST EQUIPMENTS
a. 5.5MHz Oscillator
b. V. T. V. M. with RF probe
SOUND IF ALIGNMENT PROCEDURE
|
T201 (black core)