- 2 -
TUNER ADJUSTMENTS
Use a plastic screw driver for adjustments.
Adjust the intermediate frequency of AM to the frequency of ceramic filter.
Set of unit
Supply voltage
:
AC 220V
speaker impedance
:
4 ohms
standard output
:
500 mW
Function select:
:
TUNER
a. Parts Location
a.AM Adjustment
Band :AM
SG
Position of
VTVM
Input
Output
Frequency
Tuning dial
Oscilloscope
Closed the output
termial by sweep
generator,it place
to AM ANT
Connect AM SG to
Connect VTVM to
522 KHz
522 KHz
T103
VT: 1.2V
test loop
R103
1611 KHz
1611 KHz
VT: 7.5V or so
Connect AM SG to
Connect VTVM to
603 KHz
603 KHz
T101
test loop
speaker terminals.
1404 KHz
1404KHz
TC101
b.FM Adjustment
Band :FM
FM Dummy antenna: 75 ohms unbalance
SG
Position of
VTVM
Input
Output
Frequency
Tuning dial
Oscilloscope
Connect FM SG to
Connect VTVM to
87.50 MHz
87.50 MHz
L103
VT: 2.0V
D102(+) & D104(-)
R104
108.00 MHz
108.00 MHz
VT: 7.0V or so
Connect FM SG to
Connect VTVM to
90.00 MHz
90.00 MHz
L102
D102(+) & D104(-)
speaker terminals.
106.00 MHz
106.00 MHz
TC102
Tracking
Max.
Connect VTVM to
C110(-)
90.00 MHz
Tuning
cover range
IF
Connect sweep
generator to
C101
Connect VTVM to
C110(-)
10.7 MHz
Adjusting
Connection
Max.
Adjustment
Circuit
Tracking
Adjustment
IF
T102
Tuning
522 KHz
450 KHz
Connections
cover range
Adjusting
Circuit
2
1
Step
3
2
3
Step
1
All manuals and user guides at all-guides.com
Содержание DC-MCR80M
Страница 4: ... 3 EXPLODED VIEW ACCESSORIES PACKING All manuals and user guides at all guides com ...
Страница 9: ... 9 WIRING CONNECTION This is a basic wiring connection All manuals and user guides at all guides com ...
Страница 10: ... 11 10 This is a basic schematic diagram SCHEMATIC DIAGRAM MAIN All manuals and user guides at all guides com ...
Страница 12: ... 15 14 SCHEMATIC DIAGRAM MAIN A SIDE All manuals and user guides at all guides com ...
Страница 13: ... 17 16 SCHEMATIC DIAGRAM MAIN B SIDE All manuals and user guides at all guides com ...
