DAEWOO ELECTRONICS DV-F952N, Service Manual

Page: 10 / 62

5. LEFT, RIGHT SOUND
• Connection Method
• Adjustment Procedure
1) 12V to pin No. 1, and GND to pin No. 2 of P102
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.
10
P102
L104
L105
IC101
L101
TP1
L108
TP2
L103
Z101
TP6 TP7
IC102
TP3
L109
P101
IC103
L110
TP4
CH-1
Oscilloscope
CH-2
GND OUT
LEFT
RIGHT
PIF PCB (Component Side)
SIGNAL
GENERATOR
fc: 5.5MHz (LEFT) fm: 1KHz (50KHz FM Modulation)
5.74MHz (RIGHT)
Output level: 100dBµV (75
Ω
loaded)
GND
#15
#15
Adjustment Parts Checking Point Measuring Equipment Condition of Adj. Input Signal
L109 (LEFT) TP3 Oscilloscope
EE Mode
Refer to the
L110 (RIGHT) TP4 Signal Gen. followings