-33-
SCHEMATIC DIAGRAM - 2/12 (MAIN C.B - 2/2, TUNER SECTION) <U>
AM RF
TUNER-L
TUNER-R
S-CURVE
AGC
TO MAIN C.B (1/2)
(AMP SECTION)
TO MAIN C.B (1/2) (AMP SECTION)
PLL BLOCK
IF BLOCK
RF BLOCK
AM LOOP
AM
FM
FM
AM
AM TRACKING ADJ.
AM TRACKING ADJ.
FM TRACKING ADJ.
FM VT ADJ.
L907
FM IF AMP
Q835
FM BAND SW
Q836
RF OSC
Q904
VCC SW
Q981-983
DC BALANCE/MONO
DISTORTION ADJ.
L801
AM IF ADJ.
L802
IF MIXER
Q902
RF AMP
Q901
L904
MAIN C.B (2/2) (TUNER SECTION)
FM 75
Ω
ANTENNA
TUNER FM FRONT END BLOCK
C906 JR
C901 7p 50 D CH
IC801
LA1845N-A
TUNER IF IC
FM
AM
SIGNAL :
7.8
12.0
5.6
7.9
C788
5p 50 C CH
C782
0.01 25 K B
VCC
C991 15p 50 J CH
C973
0.01 25 K B
R984 1K
R968 8.2K
w w w . x i a o y u 1 6 3 . c o m
Q Q 3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299