Osc Unit; Pa200W Board - Icom IC-7800 Service Manual Addendum

2-12 OSC UNIT

10MHz OCXO 10MHz OCXO
(X1: CR-772) (X1: CR-772)
I/O controller I/O controller
(Q12, Q13: DTC114EU) (Q12,Q13: DTC114EU)
Buffer amplifier Buffer amplifier
(Q70: 2SC4081) (Q70: 2SC4081)

2-13 PA200W BOARD

Power amplifiers Power amplifier
(Q401, Q402: SD2931) (Q401,Q402: SD2931)
RF amplifier RF amplifier
(Q101: RD01MUS1) (Q101: RD01MUS1)
2 - 7
Switching relay Switching relay
(RL10: FTR-B4CA012Z) (RL10: FTR-B4CA012Z)
D/A converter D/A converter
(IC91: AD5260BRU50) (IC91: AD5260BRU50)
Switching relay Switching relay
(RL11: FTR-B4CA012Z) (RL11: FTR-B4CA012Z)
Drive amplifier Drive amplifier
(Q301: SD2918) (Q301: SD2918)
Pre-drive amplifier Pre-drive amplifier
(Q201: PD55003) (Q201: PD55003)