Icom IC-M803 Service Manual page 75

• MAIN UNIT (7/9)
G10 DIFFIO_RX_T49p
F10 DIFFIO_RX_T49n
DAD03
DAD03
DAD04
DAD04
RFL_DO
DAD05 A10 DIFFIO_TX_T54p/T_A_6
DAD05
DAD06
DAD06
DAD07 RFL_CS
DAD07
MAIN UNIT(6/9) DAD08 RFL_DI B10 DIFFIO_RX_T55p/T_BA_1
DAD08
DAD09 RSP_SO
DAD09
RFL_CK
DAD10
DAD10
RSP_CK
DAD11
DAD11
DAD12 E10 DIFFIO_RX_T57p
DAD12
DAD13 RSP_STB
DAD13
RSP_SO F17
RSP_SO
RSP_CK DAD05 H21
RSP_CK
RSP_STB DAD09 E21
RSP_STB
MAIN UNIT(5/9) RSP_SI G21
DAD07
RSP_SI
HSK1 DAD10 D21
HSK1
DRESD E19
DRESD
DAD12 C20
D19
B20
J21
DAD04
XSDIN B18
DAD03 J22
XSCLK B17
DAD11 C21
DAD06 G22
B21
DAD13
DAD08 F22
MCLK G20
MCLK
BCLK E22
BCLK
FRM H20
FRM
/FPCAL D22
/FPCAL
DX_AFO C19
MAIN UNIT(8/9)
DX_AFO
DX_ACC
B22
DX_ACC
DX_REFC C18
DX_REFC
DX_AGC A22
DX_AGC
DR_AMOD F19
DR_AMOD
E20
F18
HENCD F20
HENCD
DDECD A18
MAIN UNIT(5/9) DDECD
HDECD A20
HDECD
A17
A19
K20
XSCL B16
K19
C16
D17
G17
E16
G16
G18
J19
H18
J18
E15
FP1R1V
IC5101
J10
VCC
P15 W7
VCC_AUX
VCC
P13 W13
VCC VCC_AUX
P11 W18
VCC VCC_AUX
N14 D18
VCC VCC_AUX
N12 D11
VCC VCC_AUX
N10 E6
VCC VCC_AUX
M15 M3
VCCA_FPLL
VCC
M13 T3
VCC VCCA_FPLL
M11 H19
VCC VCCA_FPLL
L16 U18
VCC VCCA_FPLL
L14 F4
VCC VCCA_FPLL
1.0K
L12 T5
VCC VCCA_FPLL
R5351
L10 A1
RREF_TL
VCC
K15 A3
VCC VCCBAT
K13 F8
VCC VCCPGM
K11 R19
VCC VCCPGM
J16 V8
VCC VCCPGM
J14 K5
VCC VCC
J12 L4
VCC VCC
K3 N4
VCC VCC
P3 J4
VCC VCC
5CEFA9F23I7N
FP1R1V
DA3R3V
IC5101 5CEFA9F23I7N
B8
VREFB8AN0
L7 DIFFIO_TX_T50p/T_A_0 C7
VCCIO8A
E8
VCCIO8A
K7 DIFFIO_TX_T50n/T_A_1 G7
VCCIO8A
J7 DIFFIO_RX_T51p/T_A_4 A6
VCCIO8A
H8 DIFFIO_TX_T52p/T_A_2 E7
DIFFIO_TX_T64n/GND
J8 DIFFIO_RX_T51n/T_A_5 H6
DIFFIO_RX_T63n/T_A_15
G8 DIFFIO_TX_T52n/T_A_3 F7
DIFFIO_TX_T64p/T_WE#
J9 DIFFIO_RX_T53p/T_CK G6
DIFFIO_RX_T63p/T_A_14
C8
DIFFIO_TX_T62n/T_A_13
H9 DIFFIO_RX_T53n/T_CK# D9
DIFFIO_RX_T61n/T_CS#_1
A9 DIFFIO_TX_T54n/T_A_7 D7
DIFFIO_TX_T62p/T_A_12
E9
DIFFIO_RX_T61p/T_CS#_0
A5 DIFFIO_TX_T56p/T_BA_0 D6
DIFFIO_TX_T60n/T_A_11
C9 DIFFIO_RX_T55n/T_BA_2 A7
DDECD
DIFFIO_RX_T59n/T_A_9
RSP_SI
B5 DIFFIO_TX_T56n/GND C6 R5319
DIFFIO_TX_T60p/T_A_10
A8 22 HDECD
DIFFIO_RX_T59p/T_A_8
B6 DIFFIO_TX_T58p/T_CAS# B7 HENCD
DIFFIO_TX_T58n/T_RAS#
F9 DIFFIO_RX_T57n
IC5101 5CEFA9F23I7N
C14
GND VREFB7AN0
B19
DIFFIO_RX_T9p/GND VCCIO7A
C12
DIFFIO_TX_T10p/T_DM_4 VCCIO7A
C22
DIFFIO_RX_T9n/GND VCCIO7A
D15
DIFFIO_TX_T10n/T_DQ_39
VCCIO7A
E18
DIFFIO_RX_T11p/T_DQ_37 VCCIO7A
F11
DIFFIO_TX_T12p/T_DQ_38 VCCIO7A
F21
DIFFIO_RX_T11n/T_DQ_36 VCCIO7A
G14
DIFFIO_TX_T12n/GND VCCIO7A
H17
DIFFIO_RX_T13p/T_DQS_4 VCCIO7A
A16
DIFFIO_TX_T14p/GND
VCCIO7A
DIFFIO_TX_T48n B11 R5316
DIFFIO_RX_T13n/T_DQS#_4
DIFFIO_RX_T47n/T_DQ_0 E12 100
DIFFIO_TX_T14n/T_DQ_35
DIFFIO_TX_T48p/T_DQ_2 C11 R5313
DIFFIO_RX_T15p/T_DQ_33
DIFFIO_RX_T47p/T_DQ_1 D12 22
DIFFIO_TX_T16p/T_DQ_34
DIFFIO_TX_T46n/T_DQ_3 K9
DIFFIO_RX_T15n/T_DQ_32
DIFFIO_RX_T45n/T_DQS#_0 G12
DIFFIO_TX_T16n/GND
DIFFIO_TX_T46p/T_ODT_0 L8
NC
DIFFIO_RX_T45p/T_DQS_0 H11
NC
DIFFIO_TX_T44n/T_ODT_1 A12 R5317
NC
DIFFIO_RX_T43n/T_DQ_4 C13 22
NC
DIFFIO_TX_T44p/T_DQ_6 B12
R5312
NC
DIFFIO_RX_T43p/T_DQ_5 D13 22
NC
DIFFIO_TX_T42n/T_DQ_7 F12
NC
DIFFIO_RX_T41n G13
NC
DIFFIO_TX_T42p/T_DM_0 G11
NC
DIFFIO_RX_T41p H13
NC
DIFFIO_TX_T40n/GND H10
NC
DIFFIO_RX_T39n/T_DQ_8 F13
NC
DIFFIO_TX_T40p/T_DQ_10 J11
NC
DIFFIO_RX_T39p/T_DQ_9 E14
NC
DIFFIO_TX_T38n/T_DQ_11 A13 R5315
NC
DIFFIO_RX_T37n/T_DQS#_1 J13 22
NC
DIFFIO_TX_T38p/T_CKE_1 B13
R5318
DIFFIO_RX_T25p/GND
DIFFIO_RX_T37p/T_DQS_1 H14 22
DIFFIO_TX_T26p/T_DM_2
DIFFIO_TX_T36n/T_CKE_0 F14
DIFFIO_RX_T25n/GND
DIFFIO_RX_T35n/T_DQ_12 B15
DIFFIO_TX_T26n/T_DQ_23
DIFFIO_TX_T36p/T_DQ_14 G15
DIFFIO_RX_T27p/T_DQ_21
DIFFIO_RX_T35p/T_DQ_13 C15
DIFFIO_TX_T28p/T_DQ_22
DIFFIO_TX_T34n/T_DQ_15 K16
DIFFIO_RX_T27n/T_DQ_20
DIFFIO_RX_T33n H15
DIFFIO_TX_T28n/GND
DIFFIO_TX_T34p/T_DM_1 J17
DIFFIO_RX_T29p/T_DQS_2
DIFFIO_RX_T33p H16
DIFFIO_TX_T30p/T_RESET#
DIFFIO_TX_T32n/GND A14 R5314
DIFFIO_RX_T29n/T_DQS#_2
DIFFIO_RX_T31n/T_DQ_16 F15 22
DIFFIO_TX_T30n/T_DQ_19
DIFFIO_TX_T32p/T_DQ_18 A15
R5311
DIFFIO_RX_T31p/T_DQ_17
22
FP1R1V
MPZ2012S300A
EP5321
FP2R5V
FP2R5V DA3R3V
EP5341
MPZ1608S601A
IC5101
B3 J2
DNU NC
EP5351
B4 E1
DNU NC
Y6 R2
MPZ1608S601A DNU NC
V11 C10
DNU VCCPD7A8A
E17 D14
DNU VCCPD7A8A
L9 D16
DNU VCCPD7A8A
W6 E11
VCCPD3A VCCPD7A8A
EP5352 W11 D8
VCCPD3B4A VCCPD7A8A
MPZ1608S601A W17 M17
VCCPD3B4A VCCPD5B
DA3R3V W14 N18
VCCPD3B4A VCCPD5B
W12 P21
VCCPD3B4A VCCPD5A
EP5361
5CEFA9F23I7N
MPZ1608S601A
VPGM MAIN UNIT(6/9)
DA3R3V DA3R3V
DA3R3V
13.6 ns (73.728 MHz)
FP2R5V
FP2R5V MAIN UNIT(2/9)
FP1R1V
FP1R1V
X5421
R5421
DRESD 4
MAIN UNIT(8/9) XOCV
VCC OUT
1
5.6K VCONT GND
HSK1
CR-1083
MP5421
3183
DA3R3V
BCLK
3.2
MCLK IC5401
1 #CE 8
VDD
2 SO/SIO[1] 7
SIO[3]
3 SIO[2] 6
SCLK
4 5
VSS SI/SIO[0]
/FPCAL
IPS6404L
FRM
DX_ACC
DX_AFO
DR_AMOD
IC5101
5CEFA9F23I7N
G9 U4
GND GND
AB19 V4
GND GND
AB14 G4
GND GND
REF24M AB9 F5
GND GND
DX_REFC AB2 A11
GND GND
AB1 A21
GND GND
DX_AGC AA4 B1
GND GND
AA3 B2
GND GND
Y18 B9
GND GND
AA11 B14
GND GND
AA6 C3
GND GND
Y5 C4
GND GND
Y2 C17
GND GND
Y1 D1
GND GND
W4 D2
GND GND
W3 D5
GND GND
V22 D10
GND GND
V17 D20
GND GND
V12 E3
GND GND
V7 E4
GND GND
V2 E13
GND GND
V1 F1
GND GND
U5 F2
GND GND
U3 F6
GND GND
T21 F16
DA3R3V
GND GND
T16 G3
GND GND
U9 G19
GND GND
T2 H1
GND GND
T1 H2
GND GND
R13 H3
GND GND
R3 H4
GND GND
P10 H7
GND GND
P4 H12
GND GND
P2 H22
GND GND
P1 J3
GND GND
N22 J5
GND GND
N17 J15
GND GND
N15 J20
GND GND
N13 K1
GND GND
N11 K2
GND GND
N7 K4
GND GND
N5 K8
GND GND
N3 K10
GND GND
M14 K12
GND GND
M12 K14
GND GND
M10 L3
GND GND
M4 L5
GND GND
M2 L11
GND GND
M1 L13
GND GND
L21 L15
GND GND
11-9
DA3R3V
2.3 Vp-p 3.2
R5442
10K
IC5441
1 5
C5425 C5441 R5441
2
0.001
3 3 4
0.01 470
2
SN74LVC1GU04DCKR
Q5422
2SAR502UB
DA3R3V
DA3R3V
MMZ1005Y102CT
C5485
VCC OUTPUT
9 6
GND(NC) GND(NC)
0.001
10 5
VCONT GND
1 4
24.576 MHz
IC5101
C2 Y4
NC NC
C1 Y3
NC NC
G2 U2
NC NC
G1 U1
NC NC
L2 N2
NC NC
L1 N1
NC NC
R1 J1
NC NC
W2 E2
NC NC
W1 D4
NC NC
AA2 D3
NC NC
AA1
NC
5CEFA9F23I7N
Explanatory notes
TX Line
RX Line
Voltage Line
MMZ1005Y102CT
R5451
47
IC5451
1 5
VCC D
2
GND
3 4
Z Y ADCLK_P
SN65LVDS1DBV
ADCLK_N
R5463
MAIN UNIT(6/9)
10K
MMZ1005Y102CT
IC5461
R5462
1 6
1A 1Y DACLK
100 2 5
R5461 GND VCC
3 4
2A 2Y CLK74M
100
SN74LVC2GU04DCKR
R5464
10K
40.7 ns (24.576 MHz)
3.3 Vp-p
EP5482
3.2
R5491
10K
IC5491
1 5
C5490 R5488
2
3 4 REF24M
0.01 470
SN74LVC1GU04DCKR
Measuring condition:
(unless otherwise noted)
• Frequency: 12.23 MHz
• Mode: J3E (USB)
• RX: No signal is received.
• TX: No modulation signal is applied.
• Waveforms are measured by
an oscilloscope.
Voltage notation:
TX
RX Unit: Volt
RX