Icom IC-7800 Service Manual Addendum page 522

FRONT UNIT
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
IC202/Q209/Q210
TC7SSET08/2SC4081/2SB1201 2SC3647
TC7SET08/2SB1201/2SC4081
BRIGHT
DIM DC/AC
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
EP1
EDTCB23QAF
LCD
IC610
MAIN CPU2
HN58X2464
EEPROM
IC604
HD64F2377VFQ33V
IC51
IDT70V24L25PF
DualPort
SRAM
IC605
XC9572XL
CPLD
IC601/IC602/Q601/Q602
TC7SH04/TC7SET04/2SC4081/2SA1576
CI-V
I/F
IC603 IC851
BU9480 NJM2058
D/A BUFF S-METER OUT
Q803/Q802
2SD1619/2SC4081
T8
+15V
REG
Q804/805
2SD1619/2SC4081
MAIN
C15V R8 CFVCC
REG
Q806/807
2SD1619/2SC4081
SUB
R8
REG
IC801
BA033
Explanatory notes
3.3V
REG
IC401
PCI1410APGE
Card
BusC
MAIN CPU1
IC103
HD6417751RBP200
IC1/IC2
MT48LC16M16A2 × 2
SDRAM
IC52
XC9572
CI-V
CPLD
MEMORY BOARD
IC1/IC2
E28F128J3A
Flash
VDD3R3
IC402
TPS2211
CF_REG VDD5
VDD3R3
SYSTEM RESET
IC104 IC105
CY2292F
TC7SHU04
25M
Clock
VOLTAGE LINE
Clock
GEN
LINE
DATA BUS LINE
IC204/IC206
ADV7123/SN74ACT04
EXT
Video
MONITOR
IC404
RTL8139C
EtherC
IC403
BR93LC46
EEPROM
GDC
IC203
HD64404BT
IC201/202
MT48LC16M16A2 × 2
SDRAM
IC853_1/4
NJM2058M
BUFF RX MAIN REC
IC209 IC853_1/4
AK5355VT
NJM2058M
RX SUB REC
A/D BUFF
IC853_1/4
NJM2058M
IC210 MIC REC
BUFF
AK5355VT
A/D IC853_1/4
NJM2058M
VOX AF
BUFF
IC852_1/4
IC211
NJM2058
AK4384VT
MAIN PLAY
D/A LPF
IC852_1/4
NJM2058
SUB PLAY
LPF
IC852_1/4
IC212
NJM2058
AK4384VT
D/A LPF MIC PLAY
IC207/IC208
TC7W04/µPD16875
USB
EXT USB
Drive
IC53
R3112N281A
RESET
25.000MHz(EtherC)
IC106
TC74VCX04
33.333MHz(PCI)
BUFF
32.768MHz(MAIN CPU1)