Read Sony XR-C750 Service Manual online
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• IC Block Diagrams
IC91 BU2624FV
IC61 HA1218FP
IF
AMP
LPF
IF AGC
DETECTOR
PULSE
DETECTOR
HPF1
LPF
AF
AMP
AF
AGC
OR
HPF
NOISE
AGC
PULSE
DETECT
1
PULSE
DETECT
2
GATE PULSE
GENERATOR
GENERATOR
REFERENCE
CURRENT
CIRCUIT
SW2
SW1
REFERENCE
VOLTAGE
CIRCUIT
PHASE
CURRENT
LEVEL
DIFFERENCE
DETECTION
SW3
HIGH PASS AMP
(WAVEFORM COMP.)
SW4
REFERENCE
CURRENT CIRCUIT
(WAVEFORM COMP.)
SW5
BUFFER
AMP
11
10 9
12
14
13
15
16
1
2
4
5
3
6
7
8
GATE PULSE 2
GATE PULSE 1
VCC
GND
IFAGC
BIAS1
AF-IN
BIAS2
PHASE
HOLD
GND
HP
IF-IN
AFAGC
IFDET
VCC
VTH
GATE
WF
AFOUT
PHASE
DET
PRESCALER
MAIN
COUNT
IF COUNT
CTL
20BIT COUNT
SHIFT REGISTER LATCH
REFERENCE
DIVIDER
I/O
CTL
1
2
4
5
6
7
9
10
20
18
17
16
15
14
13
12
11
11
19
XIN
CE
CK
DA
CD
P0
P1
P3
XOUT
VSS
PD
VDD
FMIN
AMIN
P2
IFIN
SD
P4
P4
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