Kenwood TR-7625 Service Manual page 34

<
Switch Logic
>
Control Unit (X54-1440-10)
0 1
3 0
3 1
3 2
CH Knob
(A)( Bi 1 0
1 1
12
13
2 0
2 1
2 2
2 3
5 kHz R 6
Signal
U I
0 A
R 0
Megahertz sig CB
MC
\I R
MR
M W
M 6
13.8
J- 4
100 kHz
1 0 kHz
To J - I
X50-1580-10
+
6 VDC in RX
Unlock indicate
On Air
Rotary Switch Active
Common B +
Memory cancel
Normal
Memory Read
Memory Write
$ 6 VDC memory on
Raw B+
Center meter
Audio Freq.
Squelch Control
+
6 VDC when
SQ active
4 simplex
4 simplex
6 s~mplex
6 simplex
6 minus "TX"
6 mlnus "TX"
6 plus "TX"
4 s
i
6 s
6 s
4 M
6 M
6P
144 simplex S Q Squelch VR
147MHz
0
0
I
I
0
I
I
info to swltch
on Q 1 -Q5 and
1 4 4 ~
HZ
I
1
0
0
I
0
0
-
-
O
"
"
"
"
O
T6
R6
146 simplex SM S meter signal
Q6 Local OSC
0
0
-
144 offset @ E Earth
146 offset @ S Speaker
VCT Vari cap tune
146 offset @ MIC MIC
+ 6 VDC in TX TON Tone signal In
145MHz
I
I
0
0
I
0
0
T9
TB
S B
SBS
ST
DS
L R
LT
PRO
RFO
FIB
DRB
RFI
L
B A
FB
146MHz
0
0
I
I
0
I
I
Transmit
+
9 VDC
$ 9 VDC when tone switch on
PTT Line
Diode switch for antenna
Rece~ve HET OSC
Transmit HET OSC
Protection signal
RF out
Final B+
Drive B t
RF in
Low Power
Base Q 102
Emitter of Q102
1 . MINIM
2. KEEP
READ)
4. HAND
WARNIR
(From F
34