Tuner Adjustments - Sanyo MCD-Z165F Service Manual

TUNER ADJUSTMENTS
Useaplastic screw driver for adjustments.
Adjust the intermediate frequency of AM and FM to the frequency of ceramic filter.
Supply voltage
: DC 12.OV
Speaker impedance : 8 ohms
Standard output : 50 mW
Function switch : RADIO
a. Parts Location
II Swlol
i
L104
I
JW10(
d
b. AM Adjustment
BAND SELECT SWITCH : AM
Step
Adjusting
Connections
SG Frequency
Position of
VTVM
Circuit
Input output
tuning dial
Adjustment
Oscilloscope
Closed the output
Connect sweep
1 IF 'emina' by.sweep generator to Cl 18 455 kHz
Low
generator, It place
T103
to LI 04.
(H) & C114 (E)
-4-
2
Connect AM SG to Connect VTVM to
515 kHz
Low end T102
Tuning coverage
test loop speaker terminals
Max.
3 1640 kHz High end
CT103
4
Connect AM SG to Connect VTVM to
600 kHz 600 kHz
L104
Tracking
test loop
Max.
5
speaker terminals
1400 kHz 1400 kHz
CT104
c. FM Adjustment
BAND SELECT SWITCH : FM FM Dummy Antenna: 75 ohm unbalance
L
Step
Adjusting
Connections
SG Frequency
Position of VTVM
Circuit
Input output
tuning dial
Adjustment
Oscilloscope
Connect sweep
T105
Connect sweep
1 IF
generator to
IC101 lpin (H) &
generator to Cl 18
10.7 MHz Low
JW105 (E)
(H) & C114 (E)
T104
0
2
Connect FM SG to conned ~M to
87.4 MHz Low end
L103
Tuning coverage JW106 (H)&
Max.
3
JW105 (E)
speaker terminals
108.2 MHz High end
CT101
4
Connect FM SG to conned VWM to
90.0 MHz 90.0 MHz
L102
Tracking JW106 (H) &
speaker terminals
Max.
5
JW105 (E)
106.0 MHz 106.0 MHz
CT102
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