Sony XR-C8200 Service Manual ▷ View online
– 21 –
Pin No.
Pin Name
I/O
Function
76
KEYIN0
I
77
KEYIN1
I
Key input terminal (A/D input)
6, DSPL, LIST, 10, 9, 8, 7, 6, 5 keys input
(LSW800, LSW711, LSW712 and LSW715 to LSW720)
78
KEYSEL0
I
Setting terminal for the key function select (fixed at “L”)
79
KEYSEL1
I
Setting terminal for the key function select (fixed at “L”)
80
NIL
I
Not used (fixed at “L”)
Key input terminal (A/D input)
OFF, SOURCE, –
OFF, SOURCE, –
= 0, MODE *, + + ), SOUND, SHIFT, 1, 2, 3, 4 keys input
(LSW700 to LSW710)
*1 loading/tape operation motor control
MODE
TERMINAL
LM LOD (pin #§)
“L”
“H”
“L”
“H”
LM EJ (pin #¶)
“L”
“L”
“H”
“H”
STOP
LOADING/
FORWARD
EJECT/
REVERSE
BRAKE
– 22 –
3.6 Vp-p
139 ns
• Waveforms
– MAIN BOARD –
– MAIN BOARD –
1
IC91
@º
(X0)
2
IC101
$¤
(OSCIN)
4.6 Vp-p
125 ns
3
IC501
&º
(X_IN)
3.8 Vp-p
200 ns
4
IC501
&£
(XT_IN)
3 Vp-p
31 ns
– 37 –
• IC Block Diagrams
– MAIN BOARD –
IC61
HA12181FP-EL
IC91
BU2624FV-E2
IC201
LB1638M
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
1
2
3
4
5
6
7
8
9
10
GND
IN1
VCC
IN2
GND
N.C.
OUT2
VS
OUT1
N.C.
CONTROL LOGIC
– 38 –
IC231
CXA2511AQ-T4
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
32
33
34
35
36
37
38
39
40
NR
NR
NR BIAS
TAPE/AUX
TAPE EQ
FWD/RVS
MS MODE
NR MODE
DET
10
9
8
7
6
5
4
3
2
1
LPF
VCT
+ -
T2
X1
X1
T1
+ -
F3
VCC
OFF/
B/C
OFF/
B/C
+
-
F1
F2
+
-
120
µ
/70
µ
120
µ
/70
µ
MS ON/
OFF
PBFB2
PBRIN2
PBREF2
PBFIN2
VCT
PBGND
PBFIN1
PBREF1
PBRIN1
PBFB1
PBEQ1
PBOUT1
VCC
TAPEIN1
AUXIN1
MSLPF
LINEOUT1
TCH1
TCL1
G2FB
PBEQ2
PBOUT2
GND
TAPEIN2
AUXIN2
DIREF
LINEOUT2
TCH2
TCL2
MSSW
MSMODE
DRSW
TAPESW
INSW
NRSW
NRMODE
MSOUT
DGND
MSTC
G1FB
+
-
IC301
CXA1946BQ-T6
37
GAIN12
38
GAIN11
39
IN14
40
IN13
41
IN12
42
IN11
INPUT SW
36
GAIN134
LOUD
VOLUME
8dB STEP
VOLUME
1dB STEP
TONE
FADER
35
LDLC1
34
LDHC1
33
INAO1
32
VRIN1
31
VOUT1
30
TIN1
29
TCLC1
28
TCLC11
27
TCLC12
26
TCO1
25
FDIN1
24 FNTO1
23 REO1
VCTBUFF
VCTBUFF
VCTBUFF
LATCH
CONTROL
LATCH
1
GAIN234
LOUD
VOLUME
8dB STEP
VOLUME
1dB STEP
TONE
FADER
2
LDLC2
3
LDHC2
4
INAO2
5
VRIN2
6
VOUT2
7
TIN2
8
TCLC2
9
TCLC21
10
TCLC22
11
TCO2
12
FDIN2
14 REO2
13 FNTO2
VCTBUFF
VCTBUFF
VCTBUFF
SHIFT
REGISTER
ZCDET
43
IN21
44
IN22
45
IN23
46
IN24
47
GAIN21
48
GAIN22
INPUT SW
18 VCC
17 VCT
16 DATA
15 TIMER
22 CE
21 CLK
20 DGND
19 GND
45k
45k
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