Sanyo MCD-Z250F, Service Manual

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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
Phones impedance 32 ohms
Function switch RADIO
a. Parts Location
b AM Adjustment
CT201
XF213
BAND SELECT SWITCH AM
Step
Adjusting
Tuning
Input Connection
Circuit
Frequency Measurement input
Output Connection
Adjustment
Measurement Output
Parts
VTVM Oscilloscope
1 999
AM Sweep
VTVM TP8 (H)
Generator
Loop ANT
Oscilloscope TP7 (E)
XF213
(Non-adjustment)
T r a c k i n g
c. FM Adjustment BAND SELECT SWITCH FM
FM Dummy Antenna 75 ohm unbalance
Step
Adjusting Tuning
Input Connection Output Connection
Adjustment
Circuit
Frequency Measurement Input
Measurement Output
Parts
VTVM Oscilloscope
1 98.1 MHz
FM Sweep
TP2 (H) VTVM
TP8 (H) _
Generator TP3 (E) Oscilloscope TP7
(Non-adjustment)
2
Tuning
87.5 MHz
Digital TP6 (H)
Confirm 2.0 0.5 V
3
Coverage
108.0 MHz
Voltmeter TP12 (E)
5.5 v
4 90.0 MHz
T r a c k i n g
FM Signal (H) VTVM
Confirm with being near
5
106.0 MHz
Generator
TP3 (E) Oscilloscope
by effective sensitivity.