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Circuit Operation - Sanyo FXR-100LD Service Manual

Partial panel detachable din-size fm-stereo/mw/lw etr cassette reciewer with auto-travel preset tuning
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CIRCUIT OPERATION
DESCRIPTION
b
IC601 (LC7233)
1-chip PLL + controller incorporated
with CMOS LSI and LCD driver.
Pin
No,
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1/0
I
I
I
I
I
I
o
0
I
I
o
0
I
o
I
I
o
0
0
0
0
0
I
I
I
I
o
0
0
0
0
0
SEGMENT
Signal
Name
X IN
TEST2
T-IN
'UNER +B
FMIAM
4F-MUTE
)ATA)IF REC
SD
ST
rAPE +B
SCAN3
SCAN2
SCAN1
SCANO
K13
K12
Kll
KIO
S21
S20
S19
S18
Terminal
Name
X IN
TEST2
PG3
PG2
PG1
PGO
PH3
PH2
PF3
PF2
PF1
PFO
PE3
PE2
PE1
PEO
Pcl
Pco
PB3
PB2
PB1
PBO
PA3
PA2
PA1
PAO
S23
S22
S21
S20
S19
S18
Function
Crystal oscillator input
Internally Connected
NC
NC
NC
H:Tape inserted
NC
Tuner system circuit power ON. H:ON
Tuner, FM. AM input H: FM, L:MW
NC
AF Mute L:Mute
Tuner IF output request H:Requested
NC
NC
Tuner, SD inputduting seek H:Received
Stereo signal input H:stereo
Tape systemcircuitpowerON. H:ON
NC
Key SW output (matrix)
Key SW output (matrix)
Key SW output (matrix)
Key SW output (matrix)
Key SW input (matrix)
Key SW input (matrix)
Key SW input (matrix)
Key SW input (matrix)
NC
NC
Segment signal 21 output for LCD
Segment signal 20 output for LCD
Segment signal 19 output for LCD
Segment signal 18 output for LCD
~~1
1: Input
O: Output
Pin
1/0
Signal
Terminal
No.
Name
Name
Function
33
0
S17
S17
Segment signal 17 output for LCD
34
0
S16
S16
Segment stgnal 16 output for LCD
35
0
S15
S15
Segment signal 15 output for LCD
36
0
S14
S14
Segment signal 14 output for LCD
37
0
S13
S13
Segment signal 13 output for LCD
38
0
S12
S12
Segment signal 12 output for LCD
39
0
S11
Sll
Segment signal 11 output for LCD
40
0
Slo
Slo
Segment signal 10 output for LCD
41
0
S9
S9
Segment signal 9 output for LCD
42
0
S8
S8
Segment signal 8 output for LCD
43
0
S7
S7
Segment signal 7 output for LCD
44
0
S6
S6
Segment signal 6 output for LCD
45
0
S5
S5
Segment signal 5 output for LCD
46
0
S4
S4
Segment signal 4 output for LCD
47
0
S3
S3
Segment signal 3 output for LCD
48
0
S2
S2
Segment signal 2 output for LCD
49
0
S1
S1
Segment signal 1 output for LCD
50
0
COM2
COM2
Common signal 2 output for LCD
51
0
COM1
COM1
Common signal 1 output for LCD
52
I
CE
HOLD
Power SW on/off input H:ON
53
I
S-METER
ADI
Tuner, srgnal level meter input
54
I
IF-IN
HCTR
Tuner, IF Input
55
I
RES
SNS
Microprocessor reset input L: Reset
56
-
VDD
VDD
+5V
57
I
FM-OSC
FM IN
Tuner, FM OSC input
58
I
AM-OSC
AM IN
Tuner, AM OSC input
59
GND
Vss
GND
60
0
EO
EO
Tuner, Error out output
61
I
-
AIN
NC
62
0
AOUT
NC
63
I
TEST1
Internally Connected
64
0
X OUT
Crystal oscillator output
COMMON
-30-

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