DAEWOO ELECTRONICS DV-F882DY-C, Service Manual

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5
2-3. IF MODULE CIRCUIT ADJUSTMENT METHOD
2-3-1. PAL B/G 2 CARRIER SYSTEM
1. 32.4MHz TRAP
• Connection Method
• Adjustment Procedure
1) 12V to pin No.1, and GND to Pin No 2. of 102
2) Connect the signal generator output to pin 3 and GND to pin 2 of P102.
3) Connect the oscilloscope to TP1.
4) Adjust L101 until the level of signal becomes minimum.
P102
L104
L105
IC101
#3
#2
L101
TP1
L108
TP2
L103
Z101
TP6 TP7
IC102
TP3
L109
P101
IC103
L110
TP4
minimum
CH-1
Oscilloscope
GND OUT
#3
PIF PCB (Component Side)
SIGNAL
GENERATOR
fc: 32.4 MHz (No modulation)
Output Level: 80dBµV (75
Ω
loaded)
#2
Adjustment Parts Checking Point Measuring Equipment Condition of Adj. Input Signal
L101 TP1
Oscilloscope
EE Mode
Refer to the
Signal Gen followings