Voltage Charts - Icom IC-H6 Service Manual

SECTION 9 VOLTAGE CHARTS
TRANSISTORS VOLT AGE CHART
• Measuring instrument is a 50KQ/V multimeter.
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-
I
TRANSMIT RECEIVE
UNIT NO.
BASE COLLECTOR EMITTER BASE COLLECTOR EMITTER
REMARKS
or or or or
or or
GATE DRAIN SOURCE GATE DRAIN
SOURCE
..
MAIN 0101 0 0 GNO 0.8 1.2 GND RF Amp
0102
i
0 0
I
0 1.9
5.8
1.2 RF Amp
0103 0 0 0 0 6.0 1.4 1st Mixer
0104 0 0 GNO 0.7 0.9 GND 1st IF Amp
.
.
--
0105 0 0 0 1.5 2.8
0.9
1st IF Amp
0106
5.2/6.0 I
5.9/0 6.0 6.0
0 6.0
T /R Switch Locked/Unlocked
--
0107 0 /0.6 0.7/0 GND 0 /0.6
0.3/0
GND T /R Switch Locked/Unlocked
-
0108 0.7 0 GND
0.3 6.0 GNO T/R Switch
0109 I
5.8 0 6.0 5.3
6.0
I
6.0
. T/R Switch
I
0110
0
8.1 0.4 6.0 7.7 5.4 T/R Switch
0111 8.1
0 8.4 7.7 6.2 8.4 T/R Switch
..
-
-·
l
0112
5.9/0
I
8.0/8.4 5.2/0 0 8.4
0
I
T /A Switch Locked/Unlocked
0113 0 0.6 0 4.2
o-
1.2
3.2 - 3.7
Noise Detector
SOL CLOSED/SOL OPENED
-
-
0114 0.6
I
0
GNO 0.610 0 /8.0 GND Squelch Control Closed/Opened
I
0115 0 8.0
0 0 /8.0 8.0
I
0
17.4 · Squelch Control
0116 8.0 0
8.4 8.0 0
17.4
8.4 T/R Switch SOL Closed/Opened
0117 0.6 8.4 1.7
0.6 8.4
1.7 Regulator
0118 7.7 6.0 8.4
I
7.7 6.0 8.4 Regulator
I
0119 0.6 6.0
I
GND
0.6 7.4 GND Regulator
0120
0.6
0.6 GND
0.6 0.6 GND
~:!
6.4 4.5 6.0
6.4 0 6.0 !
ndicator Control
-
I
I
'
Indicator Control
4.5 5.1/0 5.2/0 0 0 0
Locked/Unlocked
3 4.6
5.2
5.2
6.0 1.6 6.0
T/R Switch
,9125 '
3.0
i
5.2 2.6 0
0 0
Mic Amp
!
i
I
0126 3.2 5.1
2.6 0 0 0 Mic Amp
-
0127 5.1 2.0 5.2
0 0 0 Mic Amp
0128 0.3 2.4
I
GNO
0
'
0 GND Limiter
i
i
'
.
0129
2.4tit
3.1
"±jj
0 Low Pass Filter
I
. ..
.
PLL
0201 0 5.2
0.6 0 5.2
0.6
VCO, FM Mod.
I
-
0202 0.6
l
1.0 GND o~~
1.0
GND Buffer Amp
-·
0203 1.6 3.4 1.0
··g
1.0 Buffer Amp
-
----
0204 0.7 0.8 GND
0.7 0.8 GND PLL Mixer
.
0205 1.8 3.4
1.3
1.8
I
3.4
I
1.3 Level Converter
0206 2.2
I
5.9
I
1.8 2.2
I
5.9 1.8 Multiplier
.
0207
0 0 1.2 1.6
5.8 1.0
Multiplier
0208 0.5 1.2 GNO
0.5
I
1.0 GNO Buffer Amp
0209 1.7
I
5.6 1.2
0
I
l 0 1.0 Multiplier
0210 -0.6-0 1.5
GNO 0.7
0
GND
T/R Switch
- ·
0211 1.4 8.0
0.6 0 8.4
0
Buffer Amp
0212 0.6 8.4
0.2 0 8.4
'
0
Driver
0213 0.5 8.4
GND 0 8.4 GND Power Amp
...
0214 5.9/5.4 0 /6.0
6.0 5.9/5.4 0 16.0 6.0
Lock Failure Mute
Locked/Unlocked
..
- - - - - -
9-1