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7. ADJUSTMENTS
7 . 1
T U N E R S E C T I O N
Ttrning Voltage
o Set the FUNCTION selector to the MW position, the MANUAL switch to the ON position.
o Turn the TUNING knob counter-clockwise as far as it will go.
FM T\rner
o Connect the FM SG (FM signal generator) to the FM ANTENNA 300O terminal via a 3004 dummy
antenna.
o Set the FUNCTION selector to the FM position, FM MUTING switch to the OFF position.
Step
FUNCTION
Adiustment
point
Adjustment method
1
M W ( n o i n p u t )
v R 2 0 1 - b
Obtain a reading of DCl.5V
(within tsOmvl
between terminal no.42 and
g r o u n d ,
2
F M ( n o i n p u t )
V 8 2 0 1 - c
O b t a i n a r e a d i n g o f D C G V ( w i t h i n t 5 0 m V ) b e t w e e n t e r m i n a l n o . 4 2 a n d
g r o u n d .
Step
F M S G ( 4 0 0 H 2 . t 7 5 k H z D E V . I
Position of
dial pointor
\djustment
point
Adiustment method
Frequency
Level
1
1 0 6 M H z
106d8
1 O 6 M H z
cT403
Obtain maximum deflection of the signal meter.
2
T402
Obtain maximum demodulated output (at TAPE REC
t e r m i n a l ) .
3
1 0 6 M H z
20dB
1 0 6 M H z
cT403
4
cT401
5
cr402
6
T401
7
9 O M H z
20dB
9 0 M H z
L403
I
L 4 0 1
9
L402
1 0
Repeat steps 3 to I until the maximum sensitivity.
1 1
9 8 M H z
( F i n t u n e
t o s X - 7 0 0 L )
20dB
98MHz
T402
Obtain minimum distortion in the demodulatd output
66dB
( T A P E R E C t e r m i n a l l .
1 2
N o s i g n a l
9 8 M H z
VR2O3
Obtain a reading of DC4.75V (within tsOmv )between
t e r m i n a l n o . 9 a n d g r o u n d .
o
il
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