Logic Unit; Scope Unit - Icom IC-7800 Service Manual Addendum

2-8 LOGIC UNIT

SDRAM*
(IC201, IC202: MT48LC16M16A2TG)
GDC
(IC203: HD64404BT)
SDRAM
(IC1*, IC2: MT48LC16M16A2TG)
LAN controller*
(IC404: RTL8139C+)
FAN controller*
(IC821: NJM2904M)

2-9 SCOPE UNIT

A/D converter A/D converter
(IC501: AD7650AST) (IC501: AD7650AST)
S3 mixer S3 mixer
(D4: HSB88WS) (D4: HSB88WS)
PLL IC PLL IC
(IC801: LMX2306TM) (IC801: LMX2306TM)
VCO VCO
(Q821: 2SK210) (Q821: 2SK210)
1IF amplifier 1st IF amplifier
(Q2: 2SC5551) (Q2: 2SC5551)
S2LO amplifier S2LO amplifier
(Q101: 2SC4673) (Q101: 2SC4673)
S2 mixer S2 mixer
(D101: HSB88WS) (D101: HSB88WS)
2 - 5
RGB converter
(IC204: ADV7123KST50)
CPLD*
(IC52, IC605: XC9572XL)
MAIN CPU2*
(IC604: HD64F2377VFQ33V)
Dual port SRAM*
(IC51: IDT70V24L25PF)
MAIN CPU1
(IC103: HD6417751RBP200)
CF controller*
(IC401: PCI1410APGE)
*Located under side of the point
5V/RC-232C 5V/RC-232C
level converter level converter
(IC903: ADM202EARN) (IC903: ADM202EARN)
DSP IC DSP IC
IC601: IC601:
TMS320C6711CGDP200 TMS320C6711CGDP200
1.26V regurator 1.26V regulator
(IC201: SI-3012KS) (IC201: SI-3012KS)
14bit DDS IC 14bit DDS IC
(IC820: AD9857AST) (IC820: AD9857AST)
SCOPE ATT SCOPE ATT circuit
D1: CPH5513 D1: CPH5513
D2: CPH5513 D2: CPH5513
D3: 1SV263 D3: 1SV263
Switching IC Switching ICs
(IC1,IC31: µPG2009TB) (IC1,IC31: µPG2009TB)