Voltage Diagram; Logic Board - Icom IC-M602 Service Manual

SECTION 12 VOLTAGE DIAGRAMS

12-1 LOGIC BOARD

LOGIC BOARD
R101 47k
R102 10k
R103 10k
J1
TEMP TEMP
NWC NWC
SQL SQL
WXDEC WXDEC
DEC1 DEC1
RXADJ RXADJ
DEC2 DEC2
GND
CP8
5V
8V
GND
PCK PCK
to MAIN
PDATA PDATA
unit J1
PSTB PSTB
UNLK UNLK
ATT1 ATT1
ATT2 ATT2
H/L
TMUTE TMUTE
GND
DASTB DASTB
GND
SEND SEND
TXDET TXDET
GND
J6
5V
RES
FWE
MD1
to
MD2
FLASH
TXD
RXD
GND
J2
GND
SCOUT SCOUT
HV
HVS
VCC
AF
SP-
AF
SP-
GND
DSC
BEEP
OPTIN
to MAIN RMUTE RMUTE
unit J1
SCON
OPSTB OPSTB
DATAMN DATAMN
GND
DATANM DATANM
MICM
EPOE
FOG
ICF3
DATAH2M DATAH2M
EPSTB EPSTB
DATAMH2 DATAMH2
DATAH1M DATAH1M
DATAMH1 DATAMH1
SP+
+
SP1
SP-
-
J4
KEY
GND
PTT
to FRONT
HANG
unit W1
SP-
AF
DIAL board
J1 W1
R1
TP96N97
SQL BOARD
J7
SQL5V
S1 SQLV
EVQV9C00116E
J1 SQLG
DIAL1 DIAL1
DIAL2 DIAL2
1
DIAL3 DIAL3
2
C DIAL4 DIAL4
4
GND
8
DIAL BOARD
3.3V
IC5
S818A33AVC-BGN-T2
8V
5 1 3.3V
VIN VOUT
2
VSS
4 3
ON/OFF NC
S1
SPPH22014A
5V 5V
8V 8V
K1 K1
K2 K2
K3 K3
H/L
S2 S3 S4
SCOUT
DATANM
K4 K4
K5 K5 DATAMN
K6 K6 PDATA
PCK
S5 S6 S7 MICM
OPTIN
5V
RES
K7 K7
K8 K8
K9 K9 FWE
S8 S9 S10
KCE KCE
K0 KO
HV KENT KENT
HVS
RMUTE
S11 S12 S13 TMUTE
SEND
H/L
KMENU KMENU NWC
KCLR KCLR
DSC KF KF
BEEP ATT2
OPTIN
S14 S15 S16
SCON
KHL KHL ATT1
KCHWX KCHWX
KCH16 KCH16
MICM KDTRS
EPOE
FOG
ICF3 S17 S18 S19 S20
LBAT
5V
8V
KEYM
R64 1k
PTT
HANG
D4 D3
DA204K DA204K
5V
SQLV
DIAL1
DIAL2
DIAL3
DIAL4
12 - 1
3.3V
R33 15k
Q11
DTC144EU 5V
D2
DA204K
R31 1k
R32 1k
C16
0.1
C17
0.1
P35/SCK1/SCK4/
65
SCL0/IRQ5
66
P36/RXD4
67
NC
68
NC
69
P37/TXD4
70
PG0/CAS/IRQ6
71
PG1/CS3/OE/IRQ7
72
PG2/CS2
73
PG3/CS1
74
PG4/CS0
75
WDTOVF
76
PLLVCC
77
PLLCAP
78
C15 470p R35 3.3k PLLVSS
79
RES
9.8304 MHz 80
NMI
2.0Vp-p 81
STBY
82
FWE
IC1
83
XTAL HD64F2633F25
3.3V 84
VCC
85
EXTAL
86
X1
VSS
CR-691 87
OSC1
(9.8304 MHz)
88
OSC2
89
PVCC1
90
C18
RF7/φ
22p [M602] 91
VSS
27p [M601]
92
PF6/AS/LCAS
93
PF5/RD
94
PF4/HWR
95
PF3/LWR/ADTRG/IRQ3
96
PF2/LCAS/WAIT/BREQO
97
PF1/BACK/BUZZ
98
PF0/BREQ/IRQ2
99
NC
100
Q12 NC
101
DTA144EU AVCC
102
VREF
Q13
DTA144EU
CP6
AFS/WX
5V
DIM MAX: 7.71V
MIN: 5.20V
OFF: 0.0V
8V
DS2-DS7
DS8-DS19 Q17
DS20-DS25
2SB1132
SML-311YT
FY1101F-TR
DIM MAX: 4.80V
MIN: 2.14V
OFF: 0.0V
Q16 Q15
2SC4116 2SC4116
3.3V
5V
P16/PO14/TIOCA2
38 DEC1
/PWM2/IRQ1
37 FOG
P15/PO13/TIOCB1/TCLKC
36
NC
35
NC
34 DEC2
P14/PO12/TIOCA1/IRQ0
33 CS
P13/PO11/TIOCD0/TCLKB/A23
32 RW
P12/PO10/TIOCC0/TCLKA/A22
31 SCK
P11/PO9/TIOCB0/DACK1/A21
30 SO
P10/PO8/TIOCA0/DACK0/A20
29
VSS
28 ECK
PA3/A19/SCK2
27 RXD
PA2/A18/RXD2
26 TXD
PA1/A17/TXD2
25 EDATA
PA0/A16
24 LDB7
PB7/A15/TIOCB5
23 LDB6
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
17 5V
PVCC1
16 LDB0
PB0/A8/TIOCA3
15
VSS
14 LCS1B
PC7/A7/PWM1
13 LWR
PC6/A6/PWM0
12 LRS
PC5/A5
11 3.3V
VCC
Q4
10 LRD
DTC144EU
PC4/A4
9
VSS
8 LRESET LRD
PC3/A3
7 UNLK
PC2/A2
6 ST
PC1/A1
5
PC0/A0
4
NC Q5
3
DTC144EU
NC
2 MD2
MD2
1 MD1 LWR
MD1
Q6
DTC144EU
LRS
Q7
DTA144EU
LRESET
3.3V
Q8
DTC144EU
5V
LCS1B
5V
R7 10k
R6 10k
C3 0.1
IC2
S-80942CNMC-G9C
IC3
RTC-4553A RES 1
OUT
1 14 2
GND TPOUT VDD
RW 2 13 ST 3
WR SOUT VSS
SO 3 12 RES
SIN CS1
SCK 4 11 CS
SCK CS0 CP1
5 10
L1 L5
6 9
L2 L4
7 8
L3 VDD
D1
5V
DA202K
IC4
HN58X24128FPI
CP2
EDATA 5 4
SDA VSS
ECK 6 3
SCL A2
7 2
WP A1
5V 8 1
VCC A0
D11-D18
HSU88
R91-R98
10k
J3
C69 1 V4
C68 1 V3
C67 1 V2
C66 1 V1
C65 1 V0
C2-
C62 2.2 C2+
C1-
C63 2.2 C1+
C3-
C64 2.2 C3+
C61 2.2 VOUT
VDD
to
LCD
GND
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
E_RD
RW_WR
RS
RESETB
CS1B
E_RD
RW_WR
RS
RSETB
CS1B
5V
5
CD
4
NC
4.98V
Q1
2SA1362
5V
R2
1M
5V
Q2
DTC144EU