Tuner Adjustments - Sanyo MCD-Z250F Service Manual

TUNER ADJUSTMENTS

Use a plastic screw driver for adjustments.
Adjust the intermediate frequency of AM and FM to the frequency of ceramic filter.
Supply voltage DC 12.OV
Phones impedance 32 ohms
Function switch RADIO
a. Parts Location
CT201
XF213
b AM Adjustment
Adjusting
Step
Circuit
Frequency Measurement
999 kHz
1
T r a c k i n g 1~1 ::zzrf
c. FM Adjustment
Adjusting
Step
Circuit
Frequency Measurement
1 98.1 MHz
2 87.5 MHz
Tuning
Coverage
108.0 MHz
3
4 90.0 MHz
T r a c k i n g
106.0 MHz
5
BAND SELECT SWITCH
Input Connection
Tuning
AM Sweep
Generator
BAND SELECT SWITCH
Input Connection
Tuning
FM Sweep
Generator
FM Signal
Generator
AM
Output Connection
input Measurement Output
VTVM
Loop ANT
Oscilloscope TP7 (E)
FM
Output Connection
Input Measurement Output
TP2 (H) VTVM
TP3 (E) Oscilloscope TP7 (E)
Digital
Voltmeter
VTVM
TP3 (E) Oscilloscope TPg (E)
Adjustment
VTVM Oscilloscope
Parts
TP8 (H)
XF213
FM Dummy Antenna 75 ohm unbalance
Adjustment
VTVM Oscilloscope
Parts
TP8 (H) _
Confirm 2.0 + 0.5 V
TP6 (H)
TP12 (E)
5.5 -+O.l v
Confirm with being near
by effective sensitivity.
(Non-adjustment)
(Non-adjustment)