Voltage Diagram; Logic Unit - Icom IC-M604 Service Manual

SECTION 12 VOLTAGE DIAGRAMS

12-1 LOGIC UNIT

S5V
SQL
CP8
CP06VR
RXADJ
WXDEC
J1
26FLT-SM2-TB
GND
TEMP TEMP
25 26
WXDEC SQL SQL
23 24
RXADJ DEC1 DEC1
21 22
GND DEC2 DEC2
19 20
S5V
8V S5V
17 18
PCK GND
15 16
PSTB PDATA PDATA
13 14
ATT1 UNLK
UNLK
11 12
H/L ATT2 ATT2
9 10
GND TMUTE TMUTE
7 8
GND DASTB DASTB
5 6
TXDET SEND SEND
3 4
GND GND
1 2
to MAIN UNIT J1
OPC-1198
TXDET
H/L
ATT1
PSTB
PCK
8V
BEEP
AF
SCOUT
HV
SP–
J2
28FLT-SM2-TB
SCOUT GND
27 28
HV
25 26
AF
23 24
AF SP–
21 22
GND SP–
19 20
BEEP DSC DSC
17 18
RMUTE OPTI N OPTIN
15 16
OPSTB SCON SCON
13 14
GND DATAMN DATAMN
11 12
MICM DATANM DATANM
9 10
FOG EPOE EPOE
7 8
DATAH2M PWRON
PWRON
5 6
DATAMH2 EPSTB EPSTB
3 4
DATAMH1 DATAH1M DATAH1M
1 2
to AF UNIT J1
OPC-1200
DATAMH1
DATAMH2
DATAH2M
FOG
MICM
OPSTB
RMUTE
CMDPWR2 AF
J6
SP–
06FLT-SM2-TB
CMDPWR2 KPWRH2 S5V
5 6
GND 4
3
CMDPWR1 2 ICF3
1
HV
TO CONNECT UNIT J6
OPC-1659
CMDPWR1
LBAT
LOGIC UNIT
SP–
S5V
AF
S5V
K1
K2
K3
S2 S3 S4
KEY KEY KEY
1 2 3
K4
K5
K6
S5 S6 S7
KEY KEY KEY
4 5 6
K7
K8
K9
S8 S9 S10
KEY KEY KEY
7 8 9
KCE
K0
KENT
L5V
S11 S12 S13
KEY KEY KEY
CE 0 ENT
KPWRH2
KMENU DATANM
KCLR
KF
DATAMN
PDAT A
S14 S15 S16 PCK
KEY KEY KEY
MICM
MENU CLR F K8
KHL
KCHWX
S5V
KCH16
RES
KDTRS
S17 S18 S19 S20
S5V
KEY KEY KEY KEY
H/L CH/WX CH16 DTRS
13.67V
S5V
HV
D6
K9
KDS4148U
RES
IC8 RMUTE
TMUTE
TA78L05F
SEND
KPWR
HVIN H/L
I O
G
9.8304MHz
0.4Vp-p
R6
100K
IC2
4.5V S-80942CNMC
S1
L5V 5
1
OUT CD SPPH22014A
2
VDD
4
3
VSS NC
L5V
S5V
8V
Q17
ATT2
DIM-7:13.67V DIM-1: 5.10V DIM-OFF: 0V
KTA1644
Q12
KRA304
ATT1
Q13
8V
KRA304
R41
39K
Q16 Q15
KTC4075 KTC4075
Explanatory notes
VOLTAGE LINE
RX LINE
12 - 1
S5V
L5V
Q4
KTC2875
R31
1K
DATAMC
D1
1SS372
R34
47K
L5V
R32
1K
DATACM
65
P35/SCK1/SCK4/SCL0/IRQ5 P16/PO14/TIOCA2/PWM2/IRQ1
66
P36/RXD4 P15/PO13/TIOCB1/TCLKC
67
NC
68
NC
69
P37/TXD4 P14/PO12/TIOCA1/IRQ0
70
PG0/CAS/IRQ6 P13/PO11/TIOCD0/TCLKB/A23
71
PG1/CS3/OE/IRQ7 P12/PO10/TIOCC0/TCLKA/A22
FWE 72
PG2/CS2 P11/PO9/TIOCB0/DACK1/A21
73
PG3/CS1 P10/PO8/TIOCA0/DACK0/A20
74
PG4/CS0
75
C15 R35 WDTOVF
76
470P 3.3K NC
77
PLLCAP
78
PLLVSS
79
RES
L5V 80
NMI IC1
L5V 81
STBY
FWE 82 HD64F2633RF28
FWE
83
XTAL
84
X1
NC
CR-691
85
EXTAL
86
VSS
87
OSC1
88
OSC2
L5V 89
PVCC1
90
RF7/
91
VSS
92
PF6/AS/LCAS
93
PF5/RD
94
PF4/HWR
95
PF3/LWR/ADTRG/IRQ3
96
PF2/LCAS/WAIT/BREQO
97
ATT2C
PF1/BACK/BUZZ
98
ATT1C
PF0/BREQ/IRQ2
99
NC
100
NC
101
L5V AVCC
102
VREF
S5V
S5V
DIM-7: 4.76V
DIM-1: 2.10V
DIM-OFF: 0V
S5V
MODEL
C44
R72
0.01
JPW
L5V
RES
FWE
L5V
IC6
TC74LCXR164245
1
1DIR 1OE
LDB7
2
1B1 1A1
LDB6
3
1B2 1A2
4
GND GND
LDB5 5
1B3 1A3
LDB4 6
1B4 1A4
7
VCCB VCCA
LDB3 8
1B5 1A5
LDB2
9
1B6 1A6
10
GND GND
LDB1 11
1B7 1A7
LDB0 12
1B8 1A8
13
2B1 2A1
14
2B2 2A2
15
GND GND
LWR 16
2B3 2A3
LRS
17
2B4 2A4
18
VCCB VCCA
LRESETB 19
2B5 2A5
LCS1B 20
2B6 2A6
21
GND GND
22
2B7 2A7
23
2B8 2A8
24
2DIR 2OE
L5V
3.3V
IC5
S-817B33AMC
EDATA
1 GND 5
NC
2 VIN
ECK
3 VOUT 4
NC
L5V
38 DEC1
37 FOG
36
NC
35
NC R25
34 DEC2
CP6
1.2K
BE
33
CP10S
32 CMDPWR2
TEST
31 CMDPWR1 CP5
30 PWRON CF20
29
VSS CLK
28 CLK
PA3/A19/SCK2
27 RXD
PA2/A18/RXD2
26
TXD
PA1/A17/TXD2
RXD
25 RXADJ
PA0/A16
24 LDB7
PB7/A15/TIOCB5
23 LDB6 TXD
PB6/A14/TIOCA5
22 LDB5
PB5/A13/TIOCB4
21 LDB4
PB4/A12/TIOCA4
20 LDB3
PB3/A11/TIOCD3
19 LDB2
PB2/A10/TIOCC3
18 LDB1
PB1/A9/TIOCB3
L5V
17
PVCC1
16 LDB0 RES
PB0/A8/TIOCA3
15 FWE
VSS
14 LCS1B
PC7/A7/PWM1
13 LWR
PC6/A6/PWM0
12 LRS
PC5/A5
11
VCL
10
PC4/A4
9
VSS
8 LRESETB
PC3/A3
7 UNLK
PC2/A2
6 OPTIN
PC1/A1
5 KDTRS
PC0/A0
4
NC
3
NC
MD2
2
MD2
1 MD1
MD1
RES RES
FWE FWE
L5V L5V
S5V
SQLV
DIAL1
DIAL2
DIAL3
DIAL4
AF
L5V
SP–
S5V
R66
100
KEYM
PTT
R65
1K
HANGER
SP–
S5V
AF
3.3V
48
47
46
45
44
43
42
41
40
39
J3
38
27FLZ-SM2-TB
37
36 CS1B
27
35 RESETB
26
34 RS
25
33 RW_WR
24
E_RD
32
23
DB0
31
22
30 DB1
21
29 DB2
20
28 DB3
19
27 DB4
18
26 DB5
17
DB6
25
16
DB7
15
GND
14
VDD
13
VOUT
12
C3+
11
C3–
C61 10
C1+
2.2 9
C1–
8
C2+
7
C2–
C64 6
3.28V V0
2.2 5
V1
4
V2
C63 3
V3
C66
2.2 C68 2
V4
C62 1 1 1
2.2
C65 C67 C69
1 1 1
4.97V
L5V
EDATA
ECK
IC4
HN58X2464TI
1 A0 8
VCC
2 A1 7
WP
3 A2 6
SCL
4 VSS 5
SDA
L5V
9
RES
8
FWE
7
MD1
J8
6
MD2
B9B-ZR-SM4-TF
5
TXD
4
RXD
3
CLK
2
GND
1
SQL UNIT
SQL5V
1
2 SQLV
3 SQLG
J7
B8B-ZR-SM4-TF
S5V
1 DIAL UNIT
SQLV
2
GND W1
3
DIAL1
1 DIAL1
4 1
DILA2 2
5 DIAL2
2
DIAL3 3
6 DIAL3
3
DIAL4 4
7
4 DIAL4
GND 5
8
5 GND
OPC-1187
CP3
AF CP10S
SP+
SP1
CP4
SP– CP10S SP–
W1
TO FRONT
J4 OPC-1658
UNIT
B6B-PH-SM4-TB
SP–
KEY KEY
1 1 7
GND HANG
2
SP+
PTT
3 MIC
2 8 6
HANG
4 PTT
SP–
GND
5
AF
MICG 3 5
6
4
J 7
2
TO AF UNIT
MIC
1 J7
J 1 1
MICG
2
TO AF UNIT
MIC
1
J11
KEY
1
GND
2
PTT
3
HANG
4
SP–
5
AF
6
J5
B6B-PH-SM4-TB
TO CHASSIS
6
UNIT
7 5
W7
8 4
OPC-1212
1 3
2