Read Panasonic RR-US050E Service Manual Simplified online
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IC4
MN101C74FRA
MN101C74FRA
SYSTEM CONTROL/
LCD DRIVE
LCD DRIVE
CP11 (L5AABCB00004)
T
S
R
Q
P
O
N
M
L
K
J
I
H
G
F
E
A
B
C
D
1 2
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
3 4
LCD DISPLAY
A B C D E F G H I
J K L M N O P Q R S T U V W X
R21
470K
R22
470K
R23
1.8K
A
IC12
C0EBB0000036
C0EBB0000036
RESET
C49
1000P
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
1
2
3
4
5
6
7
8
9
10
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25
50
49
48
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26
75
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72
53
71
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69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
52
51
100
COM0
COM1
COM2
COM3
C2
PC1(BACKLIGHT)
VLC1
PC0(LCD CURRENT CUT)
VLC3
VLC2
PC2(REC LED)
TM0O(BEEP)
PC4(EXMIC H)
PC5(INTMIC H)
PC6(MIC OMNIUNI)
V
SS
OSC1
X1
X0
MMOD
NRST(RESET)
DMOD
VREF+
AN1(BA
TT
VOL)
P
A2(HOLD)
AN3(DPC)
P
A4(REC
POSITION)
P
A5(LSI
ACK)
P
A6(LSI
RST)
P
A7(LSI
CS)
PB0(FLS
RB)
PB1(FLASH
CS)
PB2(FLASH
ALE)
PB3(FLASH
CLE)
PB4(USB
CS)
PB5
PB6(USB
RST)
PB7(PLA
Y
L
)
P10(REC
H)
P1
1(MUTE)
P12(CLK
OFF
L)
TM3IO(LSI
CLK)
P14(CLK
12M
L)
P15(MIC
SENSE)
IRQ0(USB
IN)
IRQ1(BA
T
OFF
L)
P23
(EEP DATA)
IRQ4
IRQ5(DCINDET H)
P00(EEP CLK)
P01(EEP CS)
SEG44/P02
NDK
NCS(/CS)
NWE(/WE)
NRE(/RE)
D0
D1
D2
D3
D4
D5
D 7
L S I H I L O ( A 0 )
A 1
A 2
A 3
A 4
A 5
A6
A7
SEG23
SEG22
SEG21
SEG20
SEG19
SEG18
SEG17
SEG16
SEG15
SEG14
SEG13
SEG1
1
SEG10
SEG9
SEG8
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
SEG0
OSC2
V
DD
SEG12
D 6
IRQ2(USB
INTR)
AN0(KEY
IN)
N
M
L
K
J
I
H
G
J
C50
0.01
R51
1K
R66
100K
W
IC6
C0EBD0000074
C0EBD0000074
RESET
C34
0.1
O
IC5
C0JBAE000302
C0JBAE000302
OR GATE
5
4
1
2
3
Vcc
GND
C44
0.1
H
Q
U
E
B
A
N
M
L
K
J
G
H
O
P
F
U V W X
25 26 27
29
Y Z a
d
Y Z a
B
D
28
b
b
R20
470K
I
2
4
1
Vss
V IN V OUT
NC
3
2
4
1
Vss
V IN V OUT
NC
3
R92
1K
C52
0.1
F
E
RR-US050(E) DIGITAL CIRCUIT DIAGRAM
25
26
27
28
29
30
31
32
33
36
37
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44
45
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22
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16
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12
11
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9
8
7
6
5
4
DNU
/C
E
NC
/R
E
R/
B
3
2
1
14 15
46
47
48
35 34
NC
NC
DNU
NC
V
SS
NC
Vcc
Vss
NC
DNU
CLE
ALE
/W
E
/W
P
NC
NC
DNU
NC
NC
DNU
NC
I/
O4
I/
O5
I/
O6
NC
NC
DNU
NC
I/
O7
NC
Vcc
Vss
NC
DNU
NC
I/
O3
I/
O2
I/
O1
I/
O0
NC
DNU
NC
NC
F
R69
4.7
E
G
H
I
J
K
L
M
N
B
A
C
D
C33
6.3V100
FLASH MEMORY
IC9
C3FBRC000020
C3FBRC000020
X1
(8.19MHz)
3
1
2
C30
15P
C31
8P
X2
(32.768kHz)
R223
0
R253
0
R246
10K
d
C35
0.01
IC7
C3EBDG000053
C3EBDG000053
EE PROM
1
2
3
4
8
7
6
5
NC
GND
DO
DI
NC
Vcc
CS
CLK
R235
4.7K
R236
100K
R234
22K
C227
0.1
C32
0.1
DIGITAL CIRCUIT
B
SCHEMATIC DIAGRAM-4
P
R
M
A B C D
L K
V
X
I
F
E
D
C
C29
0.1
C28
6.3V22
C
R67
1M
S18
(REC POSITION)
G
T
N
Q
S
DICTA-
TION
TION
MEET-
ING
ING
2.7V
2.9V
3V
2.9V
3V
3V
3V
3V
2.7V
2.7V
2.7V
2.7V
3V
2.7V
2.7V
2.7V
2.7V
3V
3V
0V
0V
3V
3V
2.9V
3V
3V
3V
0V
0V
0V
:POSITIVE VOLTAGE LINE
:SOUND SOURCE SIGNAL(DIGITAL) LINE
RR-US050E
10
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