Icom IC-7851 Servise Manual page 142

TX
RX
SW-A UNIT
EP1
T070W2D6
LCD
IC421/Q401/Q402/Q403/Q404
SD UNIT
NJM2904/2SB1201/L2SC4081/
2SB1132/L2SC4081
LED
VR-A UNIT UNIT
MIC/PWR
MAIN AGC/SQL
SW-B UNIT
VR-B UNIT
KEY DELAY
SUB AGC/SQL
MAIN DIAL
VR-C UNIT
MAIN NB/NR
SCHEMATIC
MAIN RF/AF
DIAGRAM
y
MAIN UNIT
MICI
JACK UNIT
PHONE
JACK
MIC UNIT
MIC
JACK
VR-D UNIT
SUB NB/NR
SUB RF/AF
VR-E UNIT
BRIGHT
CONTRAST
ANTI VOX
VOX GAIN
DRIVE
COMP
MONI GAIN
SUB DIAL
TENKEY UNIT
RIT DIAL
PBT1 UNIT
MAIN TWIN PBT
MAIN APF/NOTCH
PBT2 UNIT
SW-C UNIT
SUB TWIN PBT
SUB APF/NOTCH
CW PITCH
LOGIC UNIT
FRONT UNIT
DISPLAY UNIT
IC411/IC501/Q503-Q506
NJM2730/TC7S14/LDTC144EEx4
BRIGHT
CTRL
DIM
CTRL
IC261
R2A20169SA
D/A
IC301 IC6001
R5F36406 R5F56316
FRONT MAIN
CPU CPU2
IC201-IC205
CD4051x5
MUX IC271
R3112N281A
IC6065
M24M01
RESET
128kB
EEPROM
IC251
IC206-IC207
BU2099x2 RX-4581
S/P
RTC BATTERY
CONV
Q2001
TPCF8107
PWR
+15V
CTRL
LG_PWR
DCLK#
+15V
DCLK2#
Q2011
TJ50S06M3L
PWR
CTRL
PWRS
DCLK2#
IC3601
TDS701
SD Card SH BUS
CTRL
X3511
CR-876
16.384MHz
X6001
CR-924
12.288MHz TCXO
IC3001
R8A77850
IC3301
IDT70V24L15
RAM
MAIN
CPU1
IC3201/IC3251
JS28F128J3Fx2
FLASH IC3401
LCMX02-640UHC
FPGA1
RX BUS
CI-V
I/F
IC6201
LCMX02-640UHC
CI-V FPGA2
I/F
CI-V
IC2101
TPS62110
DC-DC VDD5V
IC2121
TPS62110
DC-DC VDD3R3V
IC2141
TPS62110
DC-DC I5V
IC2221
TPS62110
VDD1R5V
DC-DC
DCLK2#
IC2241/Q2241-Q2242
ADP2323/SSM3K131x2
VDD1R1V
DC-DC
VDD1R8V
DCLK#
DCLK#
1/4
DCLK2#
X2161
CR-838
IC2161/IC2162 IC2351
ADP2384
SN74AHC74/TC4SU69
+8V
IC2201
DC-DC
TPS62110 IC2162
TC4SU69
H5V
DC-DC
DCLK2# BUFF
IC2051
XC6221A332
+3.3 H3R3V
REG
IC2301/Q2301-Q2302
ADP2323/SSM3K131x2
+11V IC2061
XC6221A332
DC-DC
+3R3V
+3.3 USB3R3V
REG
VBUS
IC4201
ADV7123
VIDEO
DAC
IC4251
ADV7511
DVI
TRANS-
DVICK/DVIDAT MITTER
IC5001
RTL8139C+
PCI BUS
LAN
DRIVER
X3501
CR-850A
X4001
33.333MHz
CR-780
EEPROM
48.000MHz
CLK24M
IC4001
HD64404
IC3101/IC3151
A3R12E40x2
DDR2
IC4271
SDRAM
GDC
SN74LVC1G08
IC4101/IC4151
BUFF
MT48LC16M16A2Px2
SDRAM
IC4292/IC4293
BD6517/TC7WH14
SW
VDD5V
X5031
CR-751A
25.000MHz
IC6101
CP2102
USB
BRIDGE
IC6121
CP2102
USB
BRIDGE
MAIN UNIT
IC371
SN74AHC1G32
BIAS
VBUS
CTRL
USB
USB-B
HUB
-12V IC291
TUSB2046
Q371
LDTC114EE
SW
X291
CR-890
6.000MHz
8-4
EXTERNAL
DISPLAY
(DVI)
LAN
IC5021
BR93L46F
S/P DIF OUT
S/P DIF IN
USB-A
SCHEMATIC
VBUS
DIAGRAM
IC381 y
PCM2901E
UMOD
IC401
CD4053B
USB
USB_AF_R
CODEC
SW
USB_AF_L
Q401
LDTC114EE
X381
CR-870
SW
12.000MHz
VBUS
CTRL
VBUS3.3V