Tuner Adjustment - Sanyo MCD-ZX530F 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.
Set of unit
:
Supply voltage DC 12.0V
:
speaker impedance 8 ohms
:
standard output 50 mW
:
Function switch RADIO
a. Parts Location
a.AM Adjustment
Adjusting
Step
Circuit
Closed up the output
termial by sweep
1 IF
generator,it place
2 Connect AM SG to
Tuning
coverage
3
4 Connect AM SG to
Tracking
5
b.FM Adjustment
Adjusting
Step
Circuit
Connect sweep
1 IF
2 Connect FM SG to
Tuning
coverage
3 FM.ANT(O) & D101(N)
4 Connect FM SG to
Tracking
5 FM.ANT(O) & D101(N)
Band switch:AM
Connections
Input Output
Connect sweep
generator to
C115(-)(G) & (L)
to AM ANT.(I)
Connect VTVM to
test loop speaker terminals.
Connect VTVM to
test loop speaker terminals.
Band switch:FM
Connection
Input Output
Connect VTVM to
generator to
generator to C115(-)
IC101(24pin )
(G)
Connect VTVM to
speaker terminals.
Connect VTVM to
speaker terminals.
SG Position of
Frequency Tuning dial
465 KHz Low
516 KHz Low end
1635 KHz High end
600 KHz 600 KHz
1400 KHz 1400 KHz
FM Dummy antenna: 75 ohms unbalance
SG Position of
Frequency Tuning dial
10.7 MHz Low
87.5 MHz Low end
108.5 MHz High end
90 MHz 90 MHz
106 MHz 106 MHz
- 2 -
VTVM
Adjustment
Oscilloscope
T103(L)
T101(A)
Max.
C3 ( C )
AM ANT COIL(I)
Max.
C4 (B)
VTVM
Adjustment
Oscilloscope
T102 (K) &
T104 (M)
L102 (F)
Max.
C1 (E)
L101 (H)
Max.
C2 (D)