Sony MDX-C8900 Service Manual page 51

– MAIN Board –
IC4 BU2624FV-E2
REFERENCE
XIN 1
DIVIDER
CE 2
I/O
CK 4
SHIFT REGISTER LATCH
CTL
DA
5
CD 6
7
P0
9
P1
10
P3
IC101 NJM2360AM (TE2)
CS 1 Q2 Q S
Q1
R
ES 2
Ipk
CT 3
CT OSC
+
VREF
GND 4
1.25V –
COMP
PHASE
DET
MAIN
PRESCALER
COUNT
IF COUNT
CTL
20BIT COUNT
IC400 CXA1946BR
8 CD
7 SI
6 V+
GAIN12 37
5 INVIN
GAIN11 38
IN14 39
IN13 40
IN12 41
IN11 42
IN21 43
IN22 44
IN23 45
IN24 46
GAIN21 47
GAIN22 48
IC200,300 TDA8574 (T)
20 XOUT
VCCL 1
19 VSS
INL 2
18 PD
SVRL 3
17
VDD
FMIN
16
AMIN
15
4
INML
14 P2
INMR 5
13 IFIN
12 SD
P4
11
SVRR 6
INR 7
8
VCCR
36 35 34 33 32
VOLUME
LOUD
8dB STEP
LATCH
ZCDET
SHIFT
REGISTER
VOLUME
LOUD
8dB STEP
1 2 3 4 5
– 71 –
BUFFER VCCL
LIFT
BUFFER AMP
REFERENCE
VCCL
SIGNAL
AMP
VCCR
SIGNAL
AMP
REFERENCE
VCCR
LIFT
BUFFER
AMP
BUFFER
31 30 29 28 27 26 25
VOLUME
TONE FADER
1dB STEP
VCTBUFF
VCTBUFF
VCTBUFF
LATCH
CONTROL
45k
45k
VCTBUFF
VCTBUFF
VCTBUFF
VOLUME
TONE FADER
1dB STEP
6 7 8 9 10 11 12
16 CL+
15 CL–
LGND
14
OUTL
13
12 OUTR
11 RGND
CR–
10
9 CR+
24 FNTO1
23 REO1
22 CE
21 CLK
20 DGND
19 GND
18 VCC
17 VCT
16 DATA
15 TIMER
14 REO2
13 FNTO2