Sony ICF-C212, Руководство по обслуживанию

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ICF-C212
11
z
IC Block Diagrams
IC1 CXA1019S
IC2 LM8560N
GND GND
FM DISCRI
NF
VOL
AM OSC
AFC
FM OSC
REG OUT
FM RF
AM RF IN
N. C
FM RF IN
FE GND
MIX OUT
21 22 23 24 25 26 27 28 29 30
2 3 5 4 6 7 8 9 10 1 11 12
13
14 15
16 17 18 19 20
AF POWER AMP
AM IF DET AGC
AM FE
FM
DISCRIMINATOR
FM FE
TUNING
METER
FM IF
GND GND AF OUT Vcc RIPPLE FILTER AF IN DET OUT AFC AGC AFC AGC IF GND METER N. C FM IF IN AM IF IN FM/AM BAND SELECT
OSC
CTR
GATE
GATE
D
OUTPUT
CONTROL
COMPARATOR
STAND
BY DET
BLANK
&
FLASH
OUTPUT
DECODER/
DRIVER
INPUT
CONTROL
PWR
UP
1/2
SEC
CTR
RESET
CONTROL
1/25 OR 1/30
DISPLAY
CONTROL
TIME
HR CTR
CONTROL
ALARM
HR CTR
D D D D D
SLEEP
CTR
ALARM
MIN CTR
TIME
MIN CTR
SEC RSTYHLD
TIME
SEC
ALARM
SLEEP
28 27 26 25 24 23 22 21 20 18
14 1 – 13
16 15 17
PWR UP
TONE
PWR
UP
50/60Hz 50/60Hz 50/60Hz 50/60Hz 50/60Hz 50/60Hz
2Hz
50/60Hz
T.DISP &
S.SAMPLE
T.RST
AL.RST
SEC DISP
T.DISP
AL.DISP
SL.DISP
TIME &
S.SAMPLE
TIME &
F.SAMPLE
ALARM &
F.SAMPLE
ALARM &
S.SAMPLE
2Hz
F.SAMPLE
S.SAMPLE
50/60Hz
12/24 SELECT CR INPUT 50/60 SELECT 50/60 INPUT SNOOZE INPUT SLEEP INPUT HOUR SET MIN SET VDD ALARM OFF SLEEP OUT ALARM OUTPUT VSS
19
ALARM DISPLAY
COL ON
OUT
SEGMENT
OUTPUT
PF.
DET
1kHz