Block Diagram - Kenwood TR7400A Service Manual

BLOCK DIAGRA!
RX UNlT (X55-1150-10)
r-
-----------
- --------------- --------
I
I
I
I
L
,,-,---,-----------,
+ - - < & - - ,
RXA L R
-
T S SMI
s1
S2 S3 T I 0
PLL
r-----------b
sau
VRA
I
VCO
UNlT (X50-1370-10)
'
I
I
TX UNIT (~56-1230-10)
T X B
S E L E C T O R
I
ZSC458 2SC458
B U R S T
a
V
T - - - - - ~ - - - -
-1
- -
- -
-
- -
- . ( b
I
I
I
T '
I
I
I 1 1 4 1 7 1 9 1 9 1 5 1
I
-
POWER SW
TLR-313x6
J
L--------,-
DISPLAY UNIT (X54-1210- 10)
13.8V
DISPLAY UNIT (X54- 121 0- 10)
r----------
1
I
I
D E C . DRIVER
I SN7447AN X 3
-t 600
SWITCH BOARD ( B C D 400-799)
I I
VCO UNlT (X50-
r------
- - - - - -
- - - - - - -
-
-
- - - - - - -
I
~ l v l ~ - N ( 1 / 5 3 7 - 1/936)
pw
MC74416X3
z s c 4 6 0 BUFF AMP
I
2SC460 ZSC460
I
A
!
I
I
T X O F F S E T LOGIC
P . D MC4044P
l
OkHz
A I
'
1
2.56MHz 160 kHz
I
,
R E F O S C , l / 2 1/16 1/16
1 ~ 1 5 %
UNIT
T
I
TD3400
H
TD3493 TD3493
2 ~ ~ 7 3 3
(~50-1380-10)
22%
- -
-
-
- - -
-
-
- -
- - - - - - -
-
-
-
-- - -