Panasonic RR-US050E Simplified Service Manual ▷ View online
12
11
10
9
8
7
6
5
4
3
2
1
A
B
C
D
E
F
G
H
IC101
C1DB00001308
C1DB00001308
INTERFACE
R106
1M
R107
220
X101
(12MHz)
C102
1000P
D23
1SS355TE17
C103
0.1
C104
6.3V10
IC102
C0CBACB00024
C0CBACB00024
REGULATOR
R103
1.5K
R102
27
C101
1000P
X
E
A
R101
27
R112
10K
C105
0.01
RX104
470K
RX103
470K
VOUT
NC
VIN
4
2
3
GND
1
C113
3300P
RX101
470
C
111
0.01
L
37 38 39 40 41 42 43 44 45 46 47 48
1
2
3
4
5
6
7
8
9
10
11
12
24 23 22 21 20 19 18 17 16 15 14 13
36
26
35
34
33
32
31
30
29
28
27
25
CVcc
GND
D+
VBUS
D-
TR ON
TEST
/ DACK1
/ DREQ1
/ INT1
IOVcc
XI
N
GND
CVcc
A1
A2
A3
A4
A5
A6
D0
D1
D2
D3
D4
D5
D6
D7
P0
P1
P3
IOVcc
GND
P4
P5
P6
A0
/
HWR
/
INT0
/L
W
R
/C
S
/
RST
/
DREQ0
/
DACK0
/ TC1
/R
D
P2
X
OUT
K
J
H
G
F
E
D
N
M
L
K
J
I
H
G
F
E
D
C
B
A
R29
1.8K
R28
1.5K
R27
1.2K
DIGITAL CIRCUIT
B
SCHEMATIC DIAGRAM-3
C106
1000P
O P
1
3
2
44
2
1
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
33
34
35
36
37
38
39
40
41
42
43
CP12
VBUS
D-
D+
DGND
USB 3V
D7
D6
D5
D4
D3
DGND
D2
D1
D0
SW V
DD
LSI ACK
IRE
IWE
LSI RST
BATT+
LSI HILO
DGND
DGND
LSI CS
EP IN
CLK IN
HOLD
DPC
BACKLIGHT H
CLK OFF L
MUTE
MIC OMNIUNI
KEY IN
REC H
EXMIC H
MIC SENSE
INTMIC H
BAT OFF L
DCINDET H
DGND
PLAY L
V
DD
NC
NC
RX102
10K
R113
0
R30
2.2K
S6
(ERASE)
S5
(
FOLDER /
MENU)
S3
(
)
S2
(
/
)
R26
1K
S1
(STOP)
R25
910
R24
10K
10K
C74
0.01
D1
B3AAB0000037
(REC)
R257
2.2K
C240
0.01
R37
0
R104
270K
R105
510K
510K
A
B
C
D
E
F
G
H
J
K
I
A
D
F
G
H
I
J
K
L
M
O
P
Q
R
S
U
T
V
W
I
C
B
Q
R129
1
S4
(
)
B
L
A
To
ANALOG
CIRCUIT (CP1)
on SCHEMATIC
DIAGRAM-2
on SCHEMATIC
DIAGRAM-2
C
RR-US050(E) DIGITAL CIRCUIT DIAGRAM
N
0V
0V
0V
0V
2.7V
2.7V
2.7V
2.7V
2.7V
2.7V
2.7V
2.7V
3V
2.9V
:POSITIVE VOLTAGE LINE
:SOUND SOURCE SIGNAL(DEIGITAL) LINE
RR-US050E
9
A
B
C
D
E
F
G
H
13
14
15
16
17
18
19
20
21
22
23
24
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
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
75
74
73
72
53
71
70
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
38
39
40
41
42
43
44
45
24
23
22
21
20
19
18
17
16
13
12
11
10
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
4 Printed Circuit Board
1
2
3
4
5
6
7
8
9
10
11
12
13
A
B
C
D
E
F
G
H
RR-US050(E) ANALOG, DIGITAL P.C.B.
ANALOG P.C.B. (SIDE:B)
A
ANALOG P.C.B. (SIDE:A)
A
DIGITAL P.C.B. (SIDE:B)
B
DIGITAL P.C.B (SIDE:A)
B
21
20 22
19
23
18
17
25
16
26
15
27
14
28
13
30
11
12
29
31
10
32
9
33
8
35
6
7
34
36
5
37
4
38
3
40
41
42
43
44
1
2
6
4
3
1
39
24
CP1
IC8
C
B
E
Q17
Q13
Q9
Q10
D
G
S
Q12
D
G
S
Q1
D
G
S
Q25
1
3
4
5
IC15
1
3
4
5
IC14
D
Q7
Q20
D
G
S
Q21
Q6
Q22
C
B
E
Q5
D
S
G
Q15
JK101
7
6
8
9
5
4
3
2
1
JK2
1
2
CP2
3
4
1
2
JK1
CP3
M2
DIRECTIONAL
MICROPHONE(Lch)
DIRECTIONAL
MICROPHONE(Lch)
1
1
1
2
2
2
CP4
3
4
S17
(SPEED CONTROL)
ON
OFF
S7
S11
(REC MODE)
(REC MODE)
RX6
IC2
C38
C211
R14
R229
R244
R60
R41
R45
R44
R16
R231
R47
C97
C41
C95
R109
IP1
D5
D2
D24
D25
D26
C40
C37
C45
C213
C214
C39
C228
D9
D8
C255
C17
C222
R247
R204
R5
R252
R7
R72
R230
R232
R212
R226
R8
R39
R38
C206
C207
C22
C252
C12
C7
C201
C54
C55
C25
C217
C221
L13
L3
L5
C208
C36
C229
C223
R215
R210
R239
R99
R238
R40
R10
R12
R214
R217
R4
R21
1
R207
R208
R237
R206
R53
R59
C216
C203
C10
C19
C224
C205
C204
C92
C60
C5
C200
C26
L2
L4
D6
D7
R216
R58
R213
C91
D11
R224
R35
R50
R34
R33
R222
R201
R225
R32
R31
C18
C16
C209
C20
C210
C212
C218
C219
L101
S10 (VOL )
S9 (VOL )
L1
L12
L6
L1
1
L9
L10
L14
S13(HOLD)
ON
OFF
R250
R218
R205 R203
R254
R202
R251
C250
C56
C254
C251
C253
C4
D22
D21
S15
(DIRECTIVITY)
L8
1
3
2
1
5
10
15
20
25
26
30
35
40
45
50
51
60
65
70
75
76
80
85
90
95
100
IC4
55
IC9
1
5
10
15
20
24
25
30
35
40
45
48
IC101
1
5
10 12
13
15
20
3
2
1
24
25
30
35
36
40
37
45
48
1
2
3
4
5
6
8
9
10
11
12
13
14
15
16
19
20 18
17
21
22
23
RX101
24
25
26
29
30
28
CP12
27
31
32
33
34
35
36
39
40
38
37
41
42
43
44
7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
CP11
20
21
22
23
24
25
26
27
28
29
S6
(ERASE)
S1(STOP)
1
4
5
8
IC7
1
3
4
5
IC5
3
4
1
2
IC6
1
2
3
4
IC102
3
4
1
2
IC12
D1(REC)
R257
R24
R25
R26
R27
R28
R29
R30
R51
R1
12
R67
C74
C105
C49
C50
C104
R102
R105
R104
R103
R101
C102
C101
D23
R129
R106
R107
C106
C
111
C103
X101
R253
R69
R1
13
C32
C1
13
C33
R21
R223
R235
R20
R22
R23
C30
C31
X2
X1
R236
R246
R66
R92
R37
R234
C240
C34
C35
C29
C227
C52
C44
C28
S18
(REC POSITION)
R209
C202
C15
G
S
R219
L7
M1(MICROPHONE)
D
D
G
S
D
G
G
S
S
D
G
S
C
B
E
C
B
E
S8
(REC/ PAUSE)
RX4
RX1
RX7
(A-B )
USB
MIC
ON
OFF
EARPHONE
M3
DIRECTIONAL
MICROPHONE(Rch)
DIRECTIONAL
MICROPHONE(Rch)
SPEAKER
DICTATION
MEETING
RX102
RX103
RX104
S4( )
S2
( / )
S3( )
S5
( FOLDER/ MENU)
Note: This printed circuit board diagram may be modified at any time with the development of new technology.
(REP3870DB-M)
(REP3870DA-M)
2 AAA SIZE(LR03)
BATTERIES 3V
BATTERIES 3V
1
2
3
2
3
6
5
4
5
4
D50
1
2
3
2
3
6
5
4
5
4
D51
RR-US050E
11
RR-US050E
12
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