Block Diagram - Icom ID-880H Service Manual

SECTION 9.

BLOCK DIAGRAM

FANH V
W50 J201 5
R HV
I C55:ZXCT1022
D163,D164:MA2S1110G
CURRENT
I DET
D ETECT
5V
REG
IC21
NJM2835DL1 Q83;2SA1588
D119;MA2S1110G
D1003
MA2S1110G
5VS
5VS
REG
Q84;2SA1588
D120;MA2S1110G
5VL
L5V
REG
5V
Q81,Q126
2SB1132 I C24;TA7808F
+8
VCC
8V
REG REG
VCC
IC20
NJM2831F12
12V
12V
REG
Q82
U NR9214
PWR
CTRL
PWR POWER SUPPLY CIRCUITS
CONTROL UNIT
5V
D8 - D11
MA2S1110G
KEY
PROTECT
Po-SW
S3-S11
SKQYPAE010
S14
TDATA
LDIAL_A
A RDATA
LDIAL_B
B
COM
R3:RV-323
VOL
VOL
R7:RV-323
FRONT CPU
SQL
SQL
IC4
UPD78F0512
(9.8304MHz)
Q14:2SC4738 12V
Q15:2SA1586
D5:MA2S1110G
PWM CONT
CTRL
5V
LCD
DRIVER
INH
CE
IC7:LC75827W
CL
DI
9 - 1
From the microphone
MAIN UNIT
CHASSIS UNI T
FANHV
MF 1
FUN
FANCONT
CTRL
Q21:2SC4738
Q 123:2SB1132
D169:MA8075
PL_U
TX_MUTE
5V
5VS RX140 Q3,Q6,Q9,Q11
DA_STB
RX300 UNR9114
DA_CK
RX400
DA_DATA
RX800
D/A
REG
IC1:M62352GP
BPF1
BPF2
BPF3
L5V
ATTC ATT ATT
CTRL
Q14:2SC4738
5V
J5
TX232
RX232
RS-232C LEVEL
CONV
IC46:
MAX3221
To MAIN UNIT
J2
TDATA
1
RDATA to CONTROL UNIT
2
3 J3
5V
4
12V
1
Po-SW 5
2
6
3
4
LIMIT
5 TXDATA
12V
6 RDATA
Po-SW D165,D166,
IC2:S-80945CNMC
D167,D168
J25 D1007
RESET 12V MA2S1110G Po-SW
RESET
1 TX_DATA
2 R_DATA
3
5V
5V 4
TXDATA
5
RDATA
Po-SW
12V
+5
RESET
REG RESET
IC8;NJM2831F05
IC23:S-80945CNMC
D 14:MA2S1110G
5V
PWR Q16:
5VC 2SA1586
REG SCL/SDA
EEPROM
5VC
IC22:24LC512T
R1,R2
DRIVER UVCO_SEL(DV),VVCO_SEL
L_LO_SW,R_DA_SEL(UTXF)
R_AFFILSEL(BAND1 )
12V
Q1:2SC4738
R_DET_MUTE(BAND2 )
L_DA_SEL(BAND3 )
L_DET_MUTE(BAND4 )
KEY
MATRIX
BACK
LIGHT
DS1,2,4,5, 12V D124 - D139
DS13-DS18
7,8,10,11
MA2S1110G
DS21-DS24
HT-297UY
5V CL_SFT1
VYPY1111C
LCD
BACK X4
LIGHT
CLOCK
SHIFT
D161:HVC376B CR-841
CURRENT 19.6608MHz
CONTROL
Q 6-Q13
2SC4738
Q1010
8V
2SC4738 5VS
J2
+8
1
REG
2
Q87: IC28:
3
2SC4738 TA75S558 Q 88:UNR9213
4
5
MIC
MIC MIC SENS
6 HPF
AM P
SELECT
7
8
5VS
D121: MA2S1110G
Q86:2SC4738
PTT PTT MIC_PTT M IC_SENC
DETECT
L5V
MICIN 98_DATA
LEVEL
CONV
8V
5VS
I C26:LMV321
D 122:MA8047
PACKET
SQL
CONTROL
Q93:
J4
UNR9213
6 5
D140:DA221
4 3
2 1
LIMIT
140_R5
300_R5
440_R5 AFOUT
800_R5
DATAOUT
VCC IC38
LA4445A
Q102:2SC4213
J8
AF SP
AM P MUT E
AF_MUTE
Q1008:2SA1586
Q1009:2SC4116
D 1002:MA2S1110G
L5V I C1016
SN74LVC2GU04
SP1
CLONE
MIC_PTT
98_DATA
DTCS
DTMF
CLONE_IN P_PTT
CLONE_OUT P_SQL
L5V
AF_VOL_DATA
AF_VOL_CK
5V I DET
D5VC
FANHV
R5C
CPU
IC25:HD64F2505
UNLOCK
PLLCK
PLLDATA
PLLSTB
DA_CK
DA_DATA
DA2_STB
DTCS_IN
SQL
R SSI
8V
IC30: IC29: IC52: IC48 1/4,2/4:
CD4066 TC7W53 TC7W53 LM2902
MIC
AF AF
HPF LPF
MUT E
SW SW
IC48 4/4:
ALC Q99: LM2902
AM P IC32: UMG9N
AN6123MS Q100
CUTOFF U NR9213
MM_MUT E SHIFT
DCONT
LPF
DA_SEL AN
DTCS_SEL
DTCS
P_SQL P_SQL
5VS
DTMF
PACKET
P_PTT
PTT
5VS
DETECT
Q 90:UNR9213
Q92: IC30:CD4066
UNR9113
PACKET
DATAIN
MOD
SELECT
L5V
IC34
TC7S66
1200_9600SEL
DIGITAL
DMOD
MOD SEL
MUTE
DADJSEL
L5V
ELEC.
VR
IC66: M62429
AF_VOL_DATA
AF_VOL_CK
DMOD
BTONE
IC1014A
Q1002:2SA1586
NJM2115
Q1003:UNR9213
OP+5V AMODIN
Q94:2SA1362 OP+5V BUFF
Q118:UNR9213 REG
OP5V +3.2V
REG
I C1003:NJU7775F32
+3.2V
AMP
REG
D141:MA2S1110G
X1000:CR-876
Q97:2SC4738
16.384MHz Q1005
Q96:2SB1132
2SC4738
I C1004:NJU7775F32
C5V
AMB_3.2V
REG AMB_3.2V
C5V
REG
LEVEL
CON-
VERTER
I C1000:TC74VHC125
AMBECLK
I C1001:SN74LVC1G07
AMBERES
I C1002:TC74VHCT125A
AMBESTB
5V
AMBEEPR
AMBETXD
OP+5V
AMBERXD
DCE L
R5 RXDT/RXCK B_TONE
TXDT/TXCK BUFF
REG
ACQ/DVC
+3.2V
I C1014
NJM2115 MODEM
Q 43:UNR9114
BUFF I C1012:CMX589AD5
DMOD
I C1009:TC7S66
Q1004,Q1007
IC1015:LMV321
U NR9213
5VS
IC51:
TC7W53
A
AF AMOD
AMP
SW
IC48 3/4:
LM2902
DA_SEL
DTCS
AMODIN
L5V
BUFF
I C49:1/2
LMV358 DET
B
C
+3.2V OP+5V
I C1013:
OP+5V
AD73311ARSZ
DAFOUT D
LINEAR
CODEC
AMB_3.2V
BUFF
DSP
I C1010 CODEC
SN74LVC1G04
IC1006:AMBE-2020
AMBERES_33
AMBERXD_33
TXCK_33 AMBETXD_33
RXCK_33 AMBESTB_33
RXDT_33 AMBECLK_33
TXDT_33 AMBEEPR_33
D_CEL +3.2V
D_ACQ
E
X1001
1/2 AMP : CR-877
9.8304MHz
I C1011: Q1006
SN74LVC2G74 2SC4738
F
G