Icom IC-7800 Service Manual page 182

FRONT UNIT
TC7SET08/2SB1201/2SC4081
CF_BOARD
CF_CARD
MAIN DIAL
SUB DIAL
MAIN_UNIT
VR-A_BOARD
MAIN NB/NR
SUB NB/NR
MAIN RF/AF
SUB RF/AF
JACK_BOARD
PHONE
JACK
SW-B_BOARD
MIC_BOARD
MIC
JACK
VR-B_BOARD
MIC/PWR
MAIN AGC/SQL
VR-C_BOARD
KEY DELAY
SUB AGC/SQL
SW-A_BOARD
VR-D_BOARD
BRIGHT
CONTRAST
ANTI VOX
VOX GAIN
DRIVE
LED_BOARD
COMP
MONI GAIN
PBT1_BOARD
TENKEY_BOARD
MAIN TWIN PBT
MAIN APF/NOTCH
PBT2_BOARD
SW-C_BOARD
SUB TWIN PBT
SUB APF/NOTCH
CW PITCH
DISPLAY UNIT
IC201/Q203/204 Q201/202 EP1
IC202/Q209/Q210
TC7SSET08/2SC4081/2SB1201 2SC3647 EDTCB23QAF
DIM BRIGHT DC/AC
LCD
INVERT
CTRL CTRL
FRONT CPU
IC6
M30620FCMGP
9.8304MHz
IC1-IC5 IC651
BU4051
R3112N281A
EXPAND
RESET
IC7
IC601
BU2099
RX-4581
SERI
RTC
PARA
BT601
CR2032
9 - 3
LOGIC UNIT
IC401
PCI1410APGE
Card
BusC
IC610
MAIN CPU2
HN58X2464
EEPROM
IC604
HD64F2377VFQ33V
IC51
IDT70V24L25PF
DualPort
SRAM
IC605
XC9572XL
CPLD
IC601/IC602/Q601/Q602
TC7SH04/TC7SET04/2SC4081/2SA1576
CI-V
CI-V
I/F
IC603 IC851
BU9480 NJM2058
D/A BUFF S-METER OUT
MEMORY BOARD
Q803/Q802
2SD1619/2SC4081
T8
+15V
REG
IC402
Q804/805
2SD1619/2SC4081 TPS2211
MAIN
C15V R8 CFVCC CF_REG
REG
Q806/807
2SD1619/2SC4081
SUB
R8
REG
IC801
BA033
Explanatory notes
3.3V
VOLTAGE LINE
REG
LINE
DATA BUS LINE
MAIN CPU1
GDC
IC103
HD6417751RBP200
IC203
HD64404BT
IC1/IC2
IC209
MT48LC16M16A2
AK5355VT
SDRAM
A/D
IC52 IC210
XC9572 AK5355VT
CPLD A/D
IC211
AK4384VT
D/A
IC1/IC2
E28F128J3A
Flash
IC212
AK4384VT
D/A
IC207/IC208
USB
Drive
VDD3R3
VDD5
VDD3R3
SYSTEM RESET
IC104 IC105 IC106
CY2292F
TC7SHU04 TC74VCX04
25M
Clock
Clock BUFF
GEN
IC204/IC206
ADV7123/SN74ACT04
EXT
Video
MONITOR
IC404
RTL8139C
EtherC
IC403
BR93LC46
EEPROM
IC201/202
MT48LC16M16A2
SDRAM
IC853_1/4
NJM2058M
BUFF RX MAIN REC
IC853_1/4
NJM2058M
RX SUB REC
BUFF
IC853_1/4
NJM2058M
MIC REC
BUFF
IC853_1/4
NJM2058M
VOX AF
BUFF
IC852_1/4
NJM2058
MAIN PLAY
IC852_1/4
NJM2058
SUB PLAY
IC852_1/4
NJM2058
MIC PLAY
EXT USB
IC53
R3112N281A
RESET
25.000MHz(EtherC)
33.333MHz(PCI)
32.768MHz(MAIN CPU1)