Icom IC-H12, Руководство по обслуживанию

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SECT I ON
9
VO LTAGE CHA RTS
e
T RANS I STO RS VO LTAGE CHA RT
•
Measuring instrument is a 50KD./V multimeter.
-
•
TRANSMIT
:\IT \'O. BA.
E
COLLECTOR EMITTE R
0
G ATE
or
DRAIN
or
SOURCE
BASE
or
.\1AC\
Q I O I
0 0 GND
0.75
RECEIVE
COLLECTOR
EMITTER REMARKS
or or
DRAIN SOURCE
1 .2 GND RF Amp
Q
l
0 0 0 1 .8 5.6
1 .2 RF Amp
0 1 03
Q I
0 0 0
0 0 GND
Q I O: 0
0
4.9
0. 0
4.9
0
.4
4 .0
0. - 0
0
G 1 D
0
0.7
1 .4
4.8
0/0.6
0.3
4.2
4.8
7.8
0
3.7
5.9
0.9 I st Mixer
0.8 GND t st IF Amp
2.9 0.8 ! st IF Amp
0 4.9 T/R Switch
0.3/0 GND
TfR
Switch Locked/Unlocked
4.8 GND I
T/R Switch
4.8 4.9 T/R Switch
8.4 4.2 T/R Switch
5.6 8.4 T/R Switch
8.4 0 T/R Switch
1---
1 .5/0
2.8/3 .4
Noise D e tector
SQ L C LO SED/SQL O P E N E D
0.6/0 0/7.8 GND Squelch Control
7.4 0/7 .2 Squelch Control
.4 7.4 7.2/() -1 - S .4 - --r T/R - S�it c h
8.4 1 .7 Regulator
__ __ _ _
__
G D 0.5 7.5 GND Regulator
.:: . I
0. -
GND
0.6
.-t
4 .9
.0 4.0 0
3 . 4.8
_ .o
0
_ .o
0
_ .
o
4 .0
0
-
I . I
G>ID 0
4.0
I .
0
-LO
0. 0
0.9
0.6
1 .5
- GND 0.6
I .
I 1 .4
-l.
I . I 1 .6
0 0.8
1 .4
0.
G D 0.6
-l.6
0.8 0
I .
G D
0.6
-
0.5 0
0.4 0
G
D 0
0
4 .9
4.5
9
-
1
0.5 GND
0
4.9 Indicator Control
0
0
Indicator Control
1 .2 4.9 T/R Switch
0 0 Mic Amp
_
o
__
Mic Amp
0
0
0
4.0
0.9
3 . 1
0.7
3.2
4.8
4.7
0.8
0
0
8.4
8.4
8.4
0
0 __J_Mi� A112P
GND Limiter
0 Low P-;;ss
0.8
vco�
FM
Amp
0.9 Buffer Amp
Mixer
I . I
Level Converter
I .
I Multiplier
0.8 Multiplier
GND Buffer Amp
�
ui(;piiec
GND T/R Switch
0 Buffer Amp
0 Driver
GND Power Amp
--
4.9 Lock Failure Mute