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six-7clclL
AM Tuner LW Band
o Connect the AM SG (AM signal generator) to the AM ANTENNA terminal via lka resistor.
o Set the FUNCTION selector to the LW position, the MANUAL switch to the ON position.
*Bar-antenna LW core
AM T\rner MW Band
o Connect the AM SG (AM signal generator) to the AM ANTENNA terminal via lkQ resistor.
o Set the FUNCTION selector to the MW position, the MANUAL switch to the ON position.
H e a t s i n k
7 . 2 P O W E R A M P L I F I E R
o Without any load or input signal, turn the
VOLUME control to minimum position'
o Check that the voltage between terminals no' 16
and no. 15 (L ch.) lies within 2'5mY
- 120mV
range. Then make a similar check for the R ch'
(between no. 17 and no. 18).
. it tt" voltage is less then 2.5mV, cut Jumper A
(L ch.), and JumPer B (R ch')'
. if tn" voltage exceed 120mV, check for circuit
failure.
e e
N o . 1 5
N o . 1 6
(-)
( + )
J u m p e r A
e D s
N o . 1 7
N o . 1 8
( + )
( - )
St€D
AM SG (zlooHz, g)% MOD.)
Position of
dial pointer
Adiustment
p o i n t
Adju$ment method
Frequency
Level
1
1 50kHz
40dB
1 50kHz
L406
O b t a i n m a x i m u m d e m o d u l a t e d o u t p u t ( a t T A p E R E C
t e r m i n a l ) .
2
1 2 ( L ) -
3
350kHz
40dB
350kHz
cT406
4
c1404
5
R e p e a t s t e p s 1 t o 4 u n t i l t h e m a x i m u m s e n s i t i v i t y .
6
N o s i g n a l
2 5 0 k H z
VR2O2
7
250kHz
( F i n e t u n e
to SX-700L1
40dB
25OkHz
T403{B}
O b t a i n a r e a d i n g o f D C 4 . 7 5 V ( w i t h i n 1 s O m V ) b e t w e e n
t e r m i n a l n o . 9 a n d g r o u n d .
Step
AM SG l4OOHz,307oMOD.)
Position of
dial pointor
qdisstmenl
point
Adiustment method
Frequency
Level
1
600kHz
40dB
6OOkHz
L405
O b t a i n m a x i m u m d e m o d u l a t e d o u t p u t ( a t T A P E R E C
2
T 2 ( M ) -
3
l4OOkHz
40dB
l4OOkHz
cr407
t e r m i n a l l .
4
cT405
5
Repeat steps 1 to 4 until the maximum sensitivity.
*Bar-antenna MW core
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