Sony XR-1800R Service Manual page 24

• IC Block Diagrams
– MAIN Board –
IC121 LC7216M
20 19 18 17
PHASE DETECTOR
1/2
CHARGE PUMP
SWALLOW
REFERENCE
COUNTER
DIVIDER
1/16, 1/17 4BIT
1 2 3 4
IC150 TDA7330BD-013TR
20
19 18
2nd ORDER 8th ORDER
ANTIALIAS SC-BANDPASS
FILTER
FILTER
VCC
1 2 3
16 15 14
UNIVERSAL
COUNTER
12BIT
PROGRAMMABLE
DIVIDER
SHIFT REGISTER LATCH
5 6 7
17 16 15 14
COSTAS
+
LOOP
– PLL
57kHz
TEST LOGIC
4 5 6 7
13 12 11
8 9 10
13 12 11
PHASE DIFF
DECODER
DECODER
CLOCK
RECOVERY
PLL
1.4675kHz
ON/OFF
OSCILLATOR
fx DIVIDER
8 9 10
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