Sony XR-L240 Service Manual page 24

XR-L240
• Waveforms
– MAIN Board –
1 IC200 4 (OSCO)
2.4 Vp-p
231 ns
2 IC1 qs (OSC2)
1.8 Vp-p
54.3 ns
3 IC1 qh (XO)
5.4 Vp-p
30.5 µ s
– CONTROL Board –
4 IC900 ud (OSC)
2.6 Vp-p
21 µ s
• IC Block Diagrams
– MAIN Board –
IC200 SAA6588T-118
20 19 18 17 16
MULTI
PATH
57kHz
DETECTOR
8th ORDER
BAND-PASS FILTER
CLOCKED SIGNAL QUALITY
COMPARATOR DECODER
4
CLOCK
RDS/RDBS RDS/RDBS INTERFACE
DEMODULATOR DECODER REGISTER
DATA
TEST OSCILLATOR
CONTROL & CLOCK
1 2 3 4 5 6 7 8
IC400 LC75421M-TLM
36 35 34 33
+
–
CONTROL
+
CIRCUIT
–
CCB LOGIC
INTERFACE CIRCUIT
CONTROL
CIRCUIT
1 2 3 4 5
24 24
15 14 13 12 11
POWER SUPPLY PAUSE
& RESET DETECTOR
5
4
CLOCK
DATA
IIC BUS SLAVE
TRANSCEIVER
9 10
32 31 30 29 28 27 26 25
+
+
–
+
–
–
6 7 8 9 10 11 12 13
24 23 22 21 20 19
+
–
+
R VREF
–
L VREF
14 15 16 17 18