4-10.Ic Block Diagrams - Sony WM-GX410 Service Manual

WM-GX410
4-9. IC Block Diagram
IC1 CXA1960Q
30 29 28 27 26 25
MPRM 31
AM RF FM RF
AMP AMP
V12M 32
MUTE 33
FM LMT
150kHz
MUTE
FM DET
FM/TV
AAGC 34
LPF
35
DETO
AM BPF
AGC AMP
45kHz
TUNE
MPXI 36
STEREO AUDIO R
MPX DECODER
STEREO AUDIO L
STID
38kHz
PLT2 37
PLT1 38
PD VCO 1/2 1/2
PLL1 39
19kHz
PLL2
40 PLAP
1.65V
1 2 3 4 5
IC302 CXA2500N-T4
LINE LINE REC REC
PB PB
PB/
REC
MIC MIC GCA GCA AMP AMP
AGC AGC
AGC AGC
REF
DET DET NORM/
METAL
MIC GCA AMP
6dB 22dB 12dB
20.5dB
-0.3dB
TAPE/
TUNER
PB
LINE REC
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24 23 22 21
TV RF 20 TVRO
AMP
19 REGV
OL DET
1.25V
FM/TV OSC
18 FTLO
1/X
17 FMBF
AM/FM: 1/2 1.25V
PSN TV: 1/8
16 AMLO
AM OSC
15 FALC
14 PLLO
13 COMP
–
+
12 BAND
1.25V
11 TUNE
6 7 8 9 10
IC301 LB1979LV-TLM-E
20 19 18 17 16 15
SPEED CURRENT
VCC
DETECT DETECT
VCC
1
20 20
14 13 12 11
SPEED CONTROL STARTING
OSCILLATING
REFERENCE VOLTAGE DETECT
CIRCUIT
WAVEFORM DETECT
COMMUTATION STARTING LOGIC
POWER
SOFT SWITCH
SUPPLY
BIAS
REFERENCE
VOLTAGE
PRE DRIVER
TO
TO
CONTROL
EACH
BLOCKS
BLOCKS
2 3 4 5 6 7 8 9 10