Sony MDX-C670 Service Manual page 40

– MAIN Section –
IC31 BU2624F-E2
1
XOUT
REFERENCE
XIN 2
DIVIDER
I/O
CE 3
CONTROL
4
CK
DA 5
CD 6
SHIFT
7
P0
REGISTER
LATCH
P1 8
IF COUNT
P3 9
CONTROL
P4 10 20BIT COUNT
IC301 CXA1946BQ-T6
36 35 34 33 32
VOLUME
LOUD
8dB STEP
GAIN12 37
GAIN11 38
IN14 39
IN13 40
IN12 41
IN11 42
LATCH
ZCDET
SHIFT
REGISTER
IN21 43
IN22 44
IN23 45
IN24 46
GAIN21 47
GAIN22 48
VOLUME
LOUD
8dB STEP
1 2 3 4 5
20 VSS
PHASE
19 PD1
DETECT
18 VDD
17
FMIN
MAIN
16 AMIN
COUNT
PRESCALLER
15 P2
14 IF1
13 IF2
12
SD
11 PD2
31 30 29 28 27 26 25
24 FNTO1
VOLUME
TONE FADER
1dB STEP
23 REO1
VCTBUFF
VCTBUFF
VCTBUFF
LATCH
22 CE
CONTROL
21 CLK
20 DGND
19 GND
45k
45k
18 VCC
VCTBUFF 17 VCT
16 DATA
VCTBUFF 15 TIMER
VCTBUFF
14 REO2
VOLUME
TONE FADER
1dB STEP 13 FNTO2
6 7 8 9 10 11 12
– 5 –
IC331 NJM4558V-TE2
A OUT 1 8 VCC
7 B OUT
A
– +
A IN– 2 B
+ –
A IN+ 3 6 B IN–
VEE 4 5 B IN+
IC501 BA8270F-E2 IC601 BA3918-V3
BUS ON VCC
14
BUS ON
1
SWITCH
RESET
RST 2 13 RST
SWITCH
12 BUS ON
11 CLK IN
BATTERY
BATT 3 10 BU IN
SWITCH
CLK 4
VREF 5
6 9 DATA IN
DATA
GND 7 8 DATA OUT
IC651 NJM2360AM (TE2)
CS 1 Q2 Q S 8 CD
Q1
R
ES 2 7 SI
Ipk
CT 3 6 V+
CT OSC
+
VREF
GND 4 5 INVIN
1.25V –
COMP
IC401 TDA7330BD-013TR (MDX-C670RDS)
20 19 18 17 16 15 14
PHASE
COSTAS
2nd ORDER 8th ORDER
+ DECODER
LOOP
ANTIALIAS SC-BANDPASS
– PLL
FILTER FILTER
57kHz
TEST LOGIC
VCC
2 3 4 5 6 7 8
1
REGULATOR
OVER VOLTAGE
PROTECT
–
+
1 2 3 4 5 6 7 8 9 10
IC731 RN5VD23AA-TL
5 4
VREF
+
–
1 2 3
– 6 –
13 12 11
DIFF
DECODER
CLOCK
RECOVERY
PLL
1.4675kHz
ON/OFF
OSCILLATOR
fx DIVIDER
9 10
11 12