Kenwood TK-940 Car Satellite Radio System User Manual


 
DESCRIPTION OF COMPONENTS
D 1
1
02CZ18iX.Y)
I
Voltage reference
__---
L---
1
D
2
(
DSA3Al
1
protection
--
A
Ref. No.
Q201
Q202
PeveIse current preventon
I
Surqe
absorption
kwhen 5V or more and OV or less
UseIFunction
Muti~llch
---
DC swlrch
Parts No.
DTC114Eup
DTC144EU
--
--
mexnce
/
Surae absorution
On when 5V or more and OV or less.
Operation/Condition
---
Off when TX.
---
Onloif bv no~se
Dl 1
I
1SS301
I
Reverse current oreventi011
I
i
Surge absorption
~
On when 5V or more and OV or less.
p~p~~~~-
Voltage reference
DAN235K
RF
swl~ch
~~p-~~~~
HSM88AS
I
Larae inuut urotectioli
Dl9
,
D20
D21
D22
D201, 202
D203
PLL/VCO (X58-4170-XX) -10
:
TK-940 -11
:
TK-941
MI809
MA4P1250
MI809
-
MA77
DA204K
1 SS301
Ref. No.
IC1
Q
1
Q2
Q3
*
pp---
TWRX switch
-p-ppp
---
TWRX sw~tch
TWRX swltch
--
---
DC swltch
Surge absorption
--
--
--
DC swltch On when
microphone
mute on
2SK508NViK52)
-
2SC3356
LCD
ASSY
(B38-0731-05)
Parts No.
SC370651
F
DTC143EK
2SA1586(Y',GRj
-
2SC3356
Q
53
D
1
D51, 52
D53
Oscillator
pppp
Buffer ampllfler
Doubler
UseIFunction OperationICondition
PLL system Or MC145190F-K
--
Lock detect~on swltch
p-pp----
On when PLL unlocked
---
Lock
detection
switch
On when PLL unlocked
---
Buffer
amplifier
-pppp
2SC3356
1 SS301
1T363A
MA360
DC switch
Vanable dlode
Modulator
OperationICondition
--pppp
5V
ppp-
--
--
On when
PLL
unlocked
Frequency control
---
UseIFunction
Voltage regulator
--
M~croprocessor
LCD
Ref.
No.
IC1
IC2
ED1
Parts No.
NJM78L05UA
75308BGK740BE9
638-0722-05