Kenwood TS-440S Serivce Manual page 92

TS-440S
ADJUSTMEN T
Measurement Adjustmen t
Item
Condition Test
Specification/Remarks
equipment Unit
Terminal Unit Part Metho d
7 . PLL
11 MODE AM Tracking
PLL IC8-1
,
TRACKIN G
62MHz BPF
Readjust T9 (VCO2 OSC coil) to Gen . 11
pin)
56On
OUT GENERATO R
unlock . (Core is fully bottom po-
3dB or les s
sition)
GND k
2) Connect 5609 resister in Tracking Spectrum
TP4 T6,7,8
GND
Do
O O
Gen . output line . Use oscillo-
analyzer (R64)
vR I
scopes probe to connect to spec-
Probe
TP 4
(R64 )
trum analyzer .
Shiel d
Case
66MHz
00
59 .5MH z
/ 00 0
OU T
8 . VCO2 1) Reset operation must also be
DC V .M PLL TP5
PLL T9 6 .4V
T9 has two peaking point .
performed . (L21)
Adjust as shown below .
*See a microprocessor
t 0 .1V
GOO D
operation check .
T8
i
N G
1) FREQ : 14 .0000MH z
MODE A M
2) FREQ 13 .999,9 MHz
2 .2-3 .O V
MODE A M
31 FREQ 14 .000,00 MHz Spectrum PLL
TP4 PLL VR1
L23 and L21 shorte d
MODE AM analyzer
(R64)
to ground . (PLL
20d B
unlocked )
Adjust spurious radia -
tion level . (58 .25MHz)
or mor e
58 .25 66 .5MH z
9 . PLL 30MHz FREQ 14 .250 .00MHz
Oscilloscope PLL TP7 PLL T10,11
MAX
Ref . 0 .3V/p- p
BPF MODE AM
IC12-5pin
,1 2
10 . PLL 38 .5- FREQ 14 .250 .00MHz
Oscilloscope PLL TP8 PLL
T13,14 MAX
Ref . 0 .2V/p- p
39MHz BPF MODE AM
(R112)
,1 5
11 . PLL VC O
(6 .5-
1) Disconnect RF unit coax . cabl e
(VCO)
Trackin g
Generator
PLL
IC14-1pi n
36MHz)
2) Connect 5609 resistor in Track- Probe TP9
PLL T16,17 37 .5dB
Less than 2d B
BPF
Spectrum
(L33) ,18,19
between peak an d
ing Generator line . output
Ripple 2d B
Use oscilloscope's probe to analyzer
3dB or less
point of 37 .5MHz .
connect to spectrum analyzer .
45dB or more
42MH z
12 . 39MHz FREQ
24 .9500MHz Spectrum
PLL TP9 PLL VR 2
Spurius
MODE AM analyzer
(L33)
Minimu m
radiation
42dB or mor e
31MHz 39MH z
13 . VCO1
1) FREQ 29 .9999MHz
T21
±0 .1 V
MODE : A M
FREQ 22 .0000MHz
5 .3-6 .3 V
2) FREQ
21 .9999MHz
±0 .1 V
DC V .M PLL
TP10 RF T22 2 .5 V
FREQ 14 .5000MHz
(R138)
5 .3-6 .3 V
3) FREQ
14 .9999MHz
±0 .1 V
T2 3
FREQ 7 .5000MHz
5 .3-6 .3 V
41 FREQ 7 .4999MHz
±0 .1 V
T2 4
FREQ 30 .0 (30kHz)
5 .5-6 .5V
92