Sony ICF-7600DA - Page 23

SW TRACKING ADJUSTMENT
Setup:
Band: SW1 thru SWi2
AM RF SSG
30% moudlation
by 400 Hz signal
Oo 8
GND hot side
een eae
(= wa
{record jack)
main board
(conductor side)
from AM RF SSG
Procedure and Adjustment Location:
1. Check and verify the VCO voltages on the LPF
line at both the lowest and highest frequency
points as shown. See page 20 for the LPF line.
VCO
LOW ENDS
HIGH ENDS
(L): 150kHz
VCO(H) : 9,375kHz
VCO(L) : 7,465kHz
VCO(H) : 21,960 kHz
1.50 ~2. 00V
12.5~15.5V
VCO(L) : M™W/LW ~SW5, SW12
VCO(H) :SW6~SW11
Adjust for a maximum
reading on the VTVM.
— main board (component side)
SWl 3,300kHz L2
SW2
4.
3,950k Hz L3
[ = AIEEE) °
[Sw3
4,900kHz
L4
Sw4
6,050kHz |
Ld
SW5
7,200kHz
L6
SW6
9,700kHz
L7
f
SW7
11,850k Hz
L8
Sws
13,700kHz
L9
Sw9
15,300kHz
17,800kHz
SWwl0
Swill
21,600kHz
SWwi2
25,800kHz
Procedure
Adjust R’
digital vol
Adjustme