SCHEMATIC DIAGRAM
TM-471A
37
7
6
5
4
3
2
1
T
S
R
Q
P
Note : The components marked with a dot (•) are parts of layer 1.
X54-345 1/1
R48
47k
Q12
UMG3N
R10
1.2k
D24
C16
100p
D4
D26
D3
B30-2205-05
J1
1
8
D28
C35
4700p
S1
W02-3665-05
D30
CN1
R49
56
L1
R44
18k
D23
R21
10k
R22
10k
R45
33k
C31
1000p
VR1
R31-0646-05
C40
0.1u
R41
56
D21
C24
0.1u
C33
1000p
R47
47k
Q6
KRC102S
CP1
R90-0724-05
C36
1u
D25
R8
1k
D27
C4
100p
R52
0
D19
R53
0
2SB1132(Q,R)
Q9
R25
56k
D22
C22
1000p
D20
C27
1000p
C15
100p
C19
680p
D29
D2
R42
2.7k
D31
1SS355
R43
820
C34
4700p
C32
1000p
R51
0
C25
1000p
C38
470p
C30
0.1u
R54
56
R46
100
BL
NC
NC
NC
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
17
SEG12
18
SEG13
19
SEG14
20
SEG15
21
SEG16
22
SEG17
23
SEG18
24
SEG19
25
SEG20
26
SEG20
27
SEG22
28
SEG23
29
SEG24
30
SEG25
31
SEG26
32
SEG27
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
R26
3.9k
C39
0.1u
R23
10k
R50
56
SEG30
SEG25
SEG28
SEG6
COM0
LCD BACKLIT
DIMMER
FUNCTION
SWITCH
SEG16
KEY BACKLIT SWITCH
SEG0
MR
SEG22
DISPLAY UNIT (X54-3450-10)
LCD ILLUMINATION
SEG20
KEY ILLUMINATION
SEG24
COM3
RESISTOR
COM1
SEG13
COM2
SEG11
SEG21
SEG3
SEG23
SEG10
SEG7
SEG15
SEG9
KEY BACKLIT
DC SWITCH
LCD BACKLIT SWITCH
D2-4
ON/OFF & VOLUME
ADJUASTMENT
MHz & MENU
ADJUASTMENT
LCD CONTROLLER
D19-30
SEG31
SEG26
SEG4
SEG29
SEG27
SEG2
SEG17
SEG12
LCD (B38-0885-05)
SEG1
SEG8
ENCODER
VARIABLE
SEG19
SEG18
SEG14
SEG5
400-430MHz
440-480MHz
0
C2
-01
C
X57-6863-XX
-00
-01
-00
X57-6863-XX
400-430MHz
C
C2
440-480MHz
400-430MHz
X57-6863-XX
-01
440-480MHz
-00
C2
C
400-430MHz
-00
440-480MHz
-01
C
X57-6863-XX
C2
C350
NO
470p
3p
C456
4p
C620
NO
1p
R350
27k
NO
8n
L354
12.5n
C472
3p
2.5p
C368
7p
10p
47
39
R358
0.75p
NO
C369
L355
8n
12.5n
C502
5p
3p
15k
R373
18k
C523
47p
27p
18n
L356
22n
R423
220
330
0.75p
0.5p
C371
C524
10p
8p
150
270
R424
20p
15p
C372
39n
L357
33n
C373
8p
10p
15p
12p
C527
12.5n
L359
8n
R436
120k
82k
5p
7p
C381
5n
L360
8n
8p
47p
C540
R439
120k
82k
C541
18p
33p
4.7u
L406
270n
47
R514
56
7p
C384
8p
1p
C387
NO
4.7u
L407
270n
NO
10p
C545
R515
33
10
C548
33p
39p
56n
L408
27n
C390
8p
10p
820
NO
R524
C549
33p
39p
270n
L409
4.7u
C392
6p
3p
R525
5.6
C564
20p
15p
270n
L410
4.7u
C393
2.5p
0.75p
820
NO
R526
C426
18p
8p
270n
27u
L411
47k
56k
R538
NO
C567
10p
C427
12p
7p
270n
L412
27u
C579
NO
9p
C429
2p
1.5p
47n
L413
27n
C580
NO
4p
2p
C430
6p
NO
5p
C601
27u
180n
L414
5p
3p
C431
C602
10p
470p
L415
270n
27u
5p
C434
9p
2p
1p
C604
L470
22n
27n
C438
1p
2p
L507
5n
2.5n
C605
6p
4p
2p
C439
3p
C608
3p
2p
R93
6.8k
8.2k
3p
C440
4p
C610
10p
6p
R119
NO
0
C611
3p
4p
6p
4p
C454
R349
NO
47k
HVC355B
HVC350B
D353
XB15A709
D603
NO
NO
XB15A709
D605
NO
Q354
2SK1830
TC402
10p
6p
10k
TH401
NO
CM
HOOK
MIC
ME
PTT
GND
8C
MBL(Key A)
ENCODER A
CM
ENCODER B
MIC KEY
DI(from LCD)
CE
CL
DO
5C
8C
VOL
POWER
RXD
BRI
PTT
GND
ME
MIC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Q10
KRA225S
CALL
Func
REV
VFO
B30-2205-05
B30-2205-05
B30-2205-05
B30-2205-05
B30-2205-05
B30-2205-05
B30-2205-05
B30-2205-05
B30-2205-05
B30-2205-05
B30-2205-05
B30-2205-05
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
NC
KI1
KI2
KI3
NC
NC
NC
VDD
VDD1
VDD2
VSS
OSC
DO (to cpu)
CE
CL
DI (from cpu)
IC3
LC75854W
PT6554LQ
or
SEG28
SEG29
SEG30
SEG31
NC
NC
NC
COM0
COM1
COM2
COM3
KS1
KS2
NC
NC
NC
R55
0
5.02V
4.96V
4.94V
4.96V
7.10V
7.90V
7.90V
7.30V
4.80V(BRIGHTNESS MAX)
0V(BRIGHTNESS OFF)