Service Manuals, User Guides, Schematic Diagrams or docs for : LG Audio FR-X1 FR-X1-ICBLK
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INTERNAL BLOCK DIAGRAM OF ICs
n IC211(LC72113,7213M)
`\
XIN REFERENCE PHASE DETECTOR PD
DIVIDER CHARGE PUMP
AIN
I I I I
FMIN SWALLOW COUNTER UNLOCK
) AOUT
--t DETECTOR
AMIN 12bits PROGRAMMABLE
CE
I
DI CCB DATA SHIFT REGISTER IFIN
>
I/F
CL
DO
POWER
VDD ON
tRESET
-
- 34 -
n IC212(LA1832)
:R 1-1
I 1
- STEREO DRIVE
--
vco I I
4) I PILOT _
AM/FM I _ DET
I I I SW
PHASE DET
FM FM ,
IF
I
33-l I I
sir
(10.7iEG;
A A A
w w
AM stereo IF out
- 35 -
n IC311(TDA7318)
Cl 1 2.2pF
-4~
I-
OUT(L) IN(L) TREBLE(L)
" " \/ I
17 16 19 18 14
OUT
LEFT FRONT
Ll
14 --%
13 --& j OUT
17 --b i LEFT REAR
I
I
I
I
II I
k I
I II II
I INPUT I SCL
: SELECTOR
I
I +GAIN fC BUS DECODER + LATCHES SDA BUS
DIGGND >
8
9
- VOL BASS TREBLE OUT
24,,
10 RIGHT FRONT
GTE
11
OUT
RIGHT REAR
6 21 5,
" XI
TREBLE(R)
Cl 0 2.2uF 2.7nF
Cl6
- 36 -
W IC411 (KIA8207K)
IN-I
Ripple BIAS CIRCUIT
THERMAL SHUT DOWN
PROTECTION CIRCUIT
<+ IN2
IN-2 .- C8
.
GIN a -
w 7 w 7
@
LL +-
4x2 OUT-2
NF2w
a+,,, LL
ZL
0
%
/77 30kQ
@
GND
- 37 -
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