Icom IC-2800H Service Manual page 38

Dual band fm transceiver
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POWER SW CTRL
Q74 DTC143XU
Q75 2SB1201
VR8V
V BIAS SEL
Q34 UMG9N 1/2
Q35 DTB123EK
4R8V
U BIAS SEL
Q34 UMG9N 1/2
Q36 DTB123EK
MIC SENS. CTRL
IC25 TC7S66FU
D66 1SS355
MIC8V SW
Q90 2SD999
Q91 DTA144EU
Q92 DTC114EU
D64 MA8091
D65 1SS355
MIC SEL
D62 1SS355
MU/D
PROTECTER
D61 MA8062
MDATA CONT
IC24 TA75S01F
D63 MA8091
MU/D
PTTM CTRL
MICIN
Q78 2SC4081
D47 1SS355
PTTM
C5V
RESET
RES
IC16
S-80945ALMP-DA9
OSC1
X4
SMD-49
10.000 MHz
OSC2
IS0, IS1, IS2
INITIAL MATRIX
II0, II1, II2, II3
ESI,ECS,
ESCK
EEPROM
IC17 X25320SI
ESO
PROTECTER
8V REG
D45 DSA3A1
IC14 TA7808F
D46 RD20E
13.8V
8V
VT8V
VT8V REG
V_VCOS REG
Q1 2SC4081
Q9 2SC4081
Q10 2SA1362
D1 1SS355
UT8V
UT8V REG
Q25 2SC4081
Q26 2SA1362
UR8V
U8V SW
D28 1SS355
D29 DAN202U
MIC AMP
Q88 2SC4081
MIC MUTE
9600 bps SW
IC26 BU4066BCFV
Q93 DTC144EU
CPU
IC19
HD6433876NB 10H
HD6433876NB 11H
HV
C5V
VVCO8V
PLL5V
Q13 DTC144EU
Q14 DTB123EK
UVCO8V
U_VCOS REG
Q17 2SC4081
D19 1SS355
IDC AMP
LPF
IC23B NJM4558M 1/2
IC23A NJM4558M 1/2
Q89
2SC4116
[EUR], [ITA] only
9600 bps AMP
IC27B NJM4558M 1/2
9600 bps LIMIT
IC27A NJM4558M 1/2
D67 MA728
D68 RB706F
U_MOD MUTE
Q19 2SC4213
DATA, CK, PLSTB, STB
PO CTRL (8 Bit)
USQL
USOUT
PTTP
[USA]
VUNLK
UUNLK
TONEIN
RXDF
CLONEC, TMAIN, TXDF
VDMUTE, UDMUTE, DMAIN
STD, Q1, Q2, Q3, Q4, OPD
VDATA, VCK
UAMUTE
VAMUTE
COMPLETE VIEW
PLL5V
VAM
VTX
UTX
VMMUTE
VSHIFT
UAM
PSEL
PSQL
VSQL
VSOUT
V_MOD MUT
Q2 2SC4213
V_SHIFT
Q3 DTC144EU
D2 MA77

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