Sony XR-C7203SP Service Manual ▷ View online
– 21 –
*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
Pin No.
Pin Name
I/O
Function
73
XT IN
I
Sub system clock input terminal (32.768 kHz)
74
AVDD
—
Power supply terminal (+5V) (for A/D converter)
75
AVREF0
I
Reference voltage input terminal (+5V) (for A/D converter)
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)
(LSW800, LSW711, LSW712 and LSW715 to LSW720)
78
VSM
I
FM and AM signal meter voltage detection input from the FM/AM tuner unit (TU1)
79
DSTSEL
I
Destination setting terminal (fixed at center voltage in this set)
80
RC IN0
I
Rotary remote commander shift key A/D input terminal
Key input terminal (A/D input)
OFF, SOURCE, – = 0 SEEK/AMS, MODE *, + + ) SEEK/AMS, SOUND,
SHIFT, 1, 2, 3, 4 keys input (LSW700 to LSW710)
OFF, SOURCE, – = 0 SEEK/AMS, MODE *, + + ) SEEK/AMS, SOUND,
SHIFT, 1, 2, 3, 4 keys input (LSW700 to LSW710)
– 22 –
• Waveforms
– MAIN Board –
– MAIN Board –
1
IC31
@º
(X
0
)
2
IC501
&£
(XT_IN)
3
IC501
&º
(X_IN)
– KEY Board –
4
IC701
@º
(OSC-IN)
3.7 Vp-p
139 ns
2.6 Vp-p
30.5
µ
s
3.5 Vp-p
200 ns
2 Vp-p
6.3
µ
s
– 37 –
• IC Block Diagrams
– MAIN Borad –
– MAIN Borad –
IC31
BU2624FV-E2
IC231
CXA2510AQ-T4
IC201
LB1638M
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
+
–
–
+
–
+
–
+
–
+ –
1
2
3
4
5
6
7
8 9 10
20
19
18
17
16
15
14
13
12
11
21
22
23
26
27
28
29
30
31
32
33
34
37
38
39
40
24
25
PBFB2
PBRIN2
PBREF2
PBFIN2
35
36
PBGND
VCT
PBFIN1
PBREF1
PBRIN1
PBFB1
PBEQ2
PBOUT2
VCC
TAPEIN2
AUXIN2
MSLPF
LINEOUT2
TCH2
NC
PLAY
FF
MSTC
DGND
MSOUT
NC
NRSW
INSW
TAPESW
MSMODE
DRSW
MSSW
NC
TCH1
LINEOUT1
DIREF
AUXIN1
TAPEIN1
PBEQ1
PBOUT1
GND
F2
120
µ
/
70
µ
X1
X1
VCT
+
F1
120
µ
/
70
µ
NR
OFF/B
F3
LPF
VCC
DETECT
MS ON/
OFF
NR
MODE
FWD/RVS
TAPE EQ
TAPE/AUX
NR BIAS
NR
MS
MODE
OFF/B
T2
T1
– 38 –
IC301
CXA1946BQ-T6
IC401
IR3R42
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
IC431, 441
M5201FP
IC571
BA8270F-E2
OSC
1/2
1/2
PHASE
WAVEFORM
SEP.
GATE
SAMPLE
& HOLD
BUFFER
REGULATOR
PHASE
COMPARATOR
PHASE
COMPARATOR 2
MUTE
TRIGGER
1
2
3
4
5
6 7
8
9
10
20
19 18
17
16
15
14 13
12
11
AMP
AMP
AMP
LAMP
VCO STOP
ST
LOUT
ROUT
LHC
RHC
POUT
IN
VCC
GND
VCO
LPF1A
LPF1B
DETIN
LPF2A
LPF2B
SUBIN
SUBOUT
MON
+
–
+
–
CONTROL
CIRCUIT
1
2
3
4
5
6
7
8
SWC
IN+A
IN–A
–VCC
OUT
IN–B
IN+B
+VCC
1
2
3
4
5
5
6
7
8
9
10
14
13
12
11
BUS ON
SWITCH
RESET
SWITCH
BATTERY
SWITCH
BUS ON
RST
BATT
CLK
VREF
DATA
GND
VCC
RST
BUS ON
BUS ON
CLK IN
BU IN
DATA IN
DATA OUT
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