DAEWOO ELECTRONICS DV-F882DY-C Service Manual page 12

5. LEFT, RIGHT SOUND
Adjustment Parts Checking Point
L109 (LEFT)
L110 (RIGHT)
• Connection Method
PIF PCB (Component Side)
P102
L104
L105
GND
SIGNAL
GENERATOR
• Adjustment Procedure
1) Supply +12V to pin No. 1, and GND to pin No. 2 of P102
Supply +5V to pin No. 3, and GND to pin No. 1 of P101
2) Connect the signal generator output to pin NO.15 of IC102 and GND.
3) Connect the oscilloscope to TP3, TP4.
4) Adjust L109 to obtain the maximum level of TP3.
5) Adjust L110 to obtain the maximum level of TP4.
Measuring Equipment
TP3
TP4
LEFT
GND
L108
L101
TP1
#15
Z101
L103
TP2
IC101
TP6 TP7
#15
OUT
fc: 5.5MHz (LEFT) fm: 1KHz (50KHz FM Modulation)
5.74MHz (RIGHT)
Output level: 100dBµV (75Ω loaded)
Condition of Adj.
Oscilloscope
Signal Gen.
P101
L109
TP3
TP4
L110
RIGHT
9
Input Signal
Refer to the
EE Mode
followings
CH-1
Oscilloscope
CH-2