Pa, Pb And Filter Units - Icom IC-726 Service Manual

2-2 PA,
PB
AND
FILTER UNITS
t
PB UNIT
(SO
MHi)
[Undef
the
FILTER
UNIT)
Final amplifier
[Q5,
Q6: 2SC2904)
-Driver
ampillier
[Q2,
Q3: 2SC3133}
Jx low-pass
filters
"Thermal swiloh
{SI
;
OHD-3
90 M)
T}(|Rk switching
re
(ftLlS:
DSl-W-DC
1
SWR
deteclor
circi
GO
ling
fan control
eirouU
Bias control (C4
l
2'
Predrive amplifier
(Ql
:
3SC1971)
2
—
2