Icom ID-880H Service Manual

9 - 1
SECTION 9. BLOCK DIAGRAM
MIC
MUT E
AF
AM P
LPF
SP1
LEVEL
CONV
D/A
BUFF
LPF
LEVEL
CONV
RESET
MIC
AM P
DRIVER
HPF
MF1
FUN
CTRL
PWR
CTRL
J5
+5
REG
J2
1
2
3
4
5
6
7
8
RESET
AMP
EEPROM
X4
ALC
AM P
J8
+8
REG
MATRIX
J2015
J4
12
34
56
HPF
BUFF
AMP
BUFF
AMP
BUFF
BUFF
1/2
+8
REG
COM
A
B
S14
X1
MIC
PTT
MICIN
5VS
5VS
8V
DATAIN
AFOUT DMOD
8V
8V
12V
12V
DATAOUT
P_SQL
NJM2835DL1
Q81,Q126
PWR
VCC
ELEC.
VR
IC38
LA4445A
Q102:2SC4213
IC66:
L5V
MUT E
SP
IC26:LMV321
PACKET
SQL
CONTROL
PACKET
PTT
DETECT
CURRENT
D ETECT
IDET
HV
VCC
5VS
L5V
8V
IC24;TA7808F
D119;MA2S1110G
Q83;2SA1588
Q84;2SA1588
D120;MA2S1110G
IC55:ZXCT1022
AN6123MS
AMOD A
B
C
D
E
F
G
IC48 4/4:
SW
MIC SENS
LM2902
M IC_SENC
TC7W53
DA_SEL
CD4066
AF
DA_SEL
LM2902
IC51:
IC32:
AF
SELECT SW
IC28: IC30:
IC48 3/4:
2SC4738
AF
IC29:
PTT
DETECT
TC7W53
AN
TC7W53
DCONT
IC52:
MM_MUT E
SW
LMV358
IC49:1/2
L5V
DTCS
UNR9213
DTCS_SEL
Q100Q86:2SC4738
D121: MA2S1110G
5VS
L5V
MIC_PTT
98_DATA
DA2_STB
DA_CK
DA_DATA
PLLDATA
PLLCK
PLLSTB
Q93:
UNR9213
Q92:
UNR9113
P_PTT
P_SQL
5VS
5VS
M62429
RX300
Q3,Q6,Q9,Q11RX1405VS
IC1:M62352GP
DA_DATA
RX800
UNR9114
RX400
DA_STB
DA_CK
REG
CLOCK
IC22:24LC512T
R1,R2
R_DATA
SHIFT
5V
R5
D165,D166,
MA2S1110G
IC23:S-80945CNMC
5V
D124 - D139
RDATA
SCL/SDA
5V
IC25:HD64F2505
D161:HVC376B
UVCO_SEL(DV),VVCO_SEL
TXDATA
CL_SFT1
RESET
FRONT CPU
CR-841
TX_DATA
LCD
Q1:2SC4738
(9.8304MHz)
KEY
LCD
TDATA
DI
IC8;NJM2831F05
LIGHT
LDIAL_A
CONTROL
RED_D1-D4
12V
DS13-DS18
IC2:S-80945CNMC
Q14:2SC4738
PROTECT
5V
D8 - D11
BACK
7,8,10,11
12V
LIGHT
5V
IC4
DRIVER
CPU
CONT
CTRL
CURRENT
VYPY1111C
BACK
RESET
Q 6-Q13
PWM
DS1,2,4,5,
Q15:2SA1586
CONTROL UNIT
MAIN UNIT
GREEN_D1-D4
12V
KEY
2SC4738
RDATA
MAX3221
RS-232C
TX232
RX232
IC46:
5V
UPD78F0512
RDATA
TDATA
S3-S11
LDIAL_B
Q 88:UNR9213
IC48 1/4,2/4:
LM2902
CUTOFF
SHIFT
Q99:
UMG9N
DTCS
MUTE
L5V
MOD SEL
DIGITAL
DADJSEL
D 122:MA8047
D167,D168
MA2S1110G
to CONTROL UNIT
To MAIN UNIT
DET
AF_VOL_DATA
AF_VOL_CK
CLONE
L5V
Q1008:2SA1586
D 1002:MA2S1110G
CLONE_IN
CLONE_OUT
TC7S66
IC34
5VS
REG
UNR9214
REG
5VL
5V
5V
REG
D163,D164:MA2S1110G
W50
ACQ/DVC
AMBEEPR
TXDT/TXCK
AMBESTB
AMBERXD
RXDT/RXCK
AMBECLK
DAFOUT
AMBETXD
DCEL
AMBERES
BTONE
PL_U
TX_MUTE
800_R5
BPF1
BPF2
ATT
L5V
ATTATTC
CTRL
Q14:2SC4738
BPF3
300_R5
FANHV
Q21:2SC4738
5V
440_R5
D169:MA8075
Q 123:2SB1132
5V
19.6608MHz
5V
L_LO_SW,R_DA_SEL(UTXF)
R_AFFILSEL(BAND1 )
L_DA_SEL(BAND3 )
Q82
VCC
REG
CHASSIS UNI
POWER SUPPLY CIRCUITS
T
R5C
Q 43:UNR9114
5V
DTCS_IN
RSSI
SQL
140_R5
Q 90:UNR9213
IC30:CD4066
1200_9600SEL
5VS
MOD
SELECT
PACKET
DTMF
AF_VOL_DATA
AF_VOL_CK
P_PTT
DTMF
P_SQL
DTCS
98_DATA
MIC_PTT
J2
4
5
1
3
2
6
6
2
4
5
1
3
J3
IDET
LIMIT
LIMIT
D140:DA221
TA75S558
Q87:
FANCONT
REG
R3:RV-323
VOL
VOL
SQL
SQL
R7:RV-323
D5:MA2S1110G
12V
HT-297UY
IC7:LC75827W
AF_MUTE
R
NJM2115
AD73311ARSZ
IC1015:LMV321
CON-
IC1002:TC74VHCT125A
CODEC
IC1001:SN74LVC1G07
LEVEL
X1000:CR-876
SN74LVC2G74
+3.2V
Q1005
+3.2V
RXDT_33
TXDT_33
TXCK_33
RXCK_33
IC1014
LINEAR
IC1013:
X1001
AMB_3.2V
IC1014A
VERTER
IC1006:AMBE-2020
MODEM
OP+5V
IC1010
+3.2V
+3.2V
AMB_3.2V
IC1011:
NJM2115
IC1009:TC7S66
CODEC
SN74LVC1G04
DSP
16.384MHz
IC1012:CMX589AD5 Q1006
IC1000:TC74VHC125
9.8304MHz
Q1004,Q1007
OP+5V
OP+5V
AMODIN
DMOD
B_TONE
DMOD
AMODIN
REG
12V
12V
Q1009:2SC4116
IC1016
SN74LVC2GU04
2SC4738
Q1010
Po-SW
D1007
Po-SW
4
J25
1
5
3
2
Po-SW
TXDATA
RDATA
R_DET_MUTE(BAND2 )
L_DET_MUTE(BAND4 )
2SB1132
IC21
MA2S1110G
D1003
NJM2831F12
IC20
D 14:MA2S1110G
REG
5VC
5VC
PWR
DS21-DS24
CL
CE
INH
5V
12V
MA2S1110G
Po-SW
Po-SW
SKQYPAE010
2SC4738
UNR9213
D_CEL
D_ACQ
2SC4738
REG
Q118:UNR9213
OP5V
Q94:2SA1362
C5V
REG
Q96:2SB1132
Q97:2SC4738
D141:MA2S1110G
L5V
D5VC
FANHV
OP+5V
C5V
REG
OP+5V
Q1002:2SA1586
Q1003:UNR9213
REG
+3.2V
IC1003:NJU7775F32
IC1004:NJU7775F32
AMB_3.2V
REG
AMBEEPR_33
AMBECLK_33
AMBESTB_33
AMBETXD_33
AMBERXD_33
AMBERES_33
UNLOCK
FANH V
:CR-877
Q16:
2SA1586
From the microphone

Icom ID-880H Specifications

General

Input voltage	13.8 V
Mounting kit	Yes
Product type	Portable CB radio
Product color	Black
Housing material	-
Frequency range	10 - 20000 MHz
Channels quantity	1052 channels

Weight and Dimensions

Depth	198.12 mm
Width	149.86 mm
Height	40.64 mm