Sony XR-CA300 Service Manual page 24

XR-CA300/L200
Q Q
3 7 6 3 1 5 1 5 0
• Waveforms
– MAIN Board –
1 IC200 4 (OSCO)
2.4 Vp-p
231 ns
2 IC1 qs (OSC2)
1.8 Vp-p
54.3 ns T E
L 1 3 9 4 2 2 9 6 5 1 3
3 IC1 qh (XO)
5.4 Vp-p
30.5 µ s
w w w
– CONTROL Board –
4 IC900 ud (OSC)
2.6 Vp-p
21 µ s
x a o
y
. i
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8
• IC Block Diagrams
– MAIN Board –
IC200 SAA6588T-118
20 19 18 17
MULTI
PATH
57kHz
DETECTOR
8th ORDER
BAND-PASS FILTER
CLOCKED SIGNAL QUALITY
COMPARATOR DECODER
4
CLOCK
RDS/RDBS RDS/RDBS
DEMODULATOR DECODER
DATA
TEST OSCILLATOR
CONTROL & CLOCK
1 2 3 4 5 6 7 8
IC400 LC75421M-TLM
Q Q
36 3 35 34 33 7 6 3
+
–
CONTROL
+
CIRCUIT
–
CCB LOGIC
INTERFACE CIRCUIT
CONTROL
CIRCUIT
1 2 3 4 5
IC800 MM1175XFF (XR-CA300 only)
BUS ON
1 14 VCC
OUT
RESET RESET
RESET
2 13
SWITCH IN
OUT
BUS ON
BATT
BATT 3 12
IN
SWITCH
CLK CLK
4 11
u 1 6 3
OUT IN
BATT
VREF 5 10
. CHECK
DATA
6 9 DATA IN
IN/OUT
GND 7 8 DATA OUT
24 24
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2 4
9 9 8
16 15 14 13 12 11
POWER SUPPLY PAUSE
& RESET DETECTOR
5
4
CLOCK
INTERFACE
DATA
REGISTER
IIC BUS SLAVE
TRANSCEIVER
9 10
1 32 31 5 1 30 5 0 29 28 8 9 2 27 26 25 4
+
+
–
+
–
–
6 7 8 9 10 11 12 13
m
c o
2
9 9
9 8 2 24 23 22 21 20 19 9 9
+
–
+
R VREF
–
L VREF
14 15 16 17 18