Sanyo MCD-ZX600F, Service Manual

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TUNER ADJUSTMENTS WIRING CONNECTION
This is a basic wiring connection.
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 Band switch : MW
Adjusting Connections SG Position of VTVM
Circuit lnput Output Frequency Tuning dial Oscilloscope
Connect sweep
1 IF generator to(19)IC101 450KHz Low T103
(H) 0and C130(E)
2 Tuning Connect AM SG to Connect VTVM to 522 KHz Low end T101 VT Low: 1.5V±0.1
3 coverage test loop speaker terminals. 1611 KHz High end VT Hi: 7.5V±0.2
4 Connect AM SG to Connect VTVM to 603 KHz 603 KHz MW ANT
5 test loop speaker terminals 1404 KHz 1404 KHz CT102
b. FM Adjustment Band switch : FM FM Dummy antenna : 75 ohms unbalance
Adjusting Connection position of VTVM
Circuit Input Output tuning dial Oscilloscope
Connect sweep Connect VTVM to
1 IF generator to IC101 generator to (19) 10.7MHz Low
(22)pin (H) & IC101(H) and C130(E)
IC101(23)pin (E)
2 Tuning Connect FM SG to Connect VTVM to 87.5 MHz Low end L102 VT Low : 2.1V±0.1
3 coverage FM ANT(H) D101 speaker terminals. 108 MHz High end VT Hi : 7.2V±0.1
4 Connect FM SG to Connect VTVM to 90.0 MHz 90.0 MHz L101
5 FM ANT(H) D101 speaker terminals. 106.0 MHz 106.0 MHz CT101
Tracking
Step Adjustment
Closed the output
terminal by sweep
generator,it place
to AM ANT
Max.
Tracking
Step SG Frequency
Max.
Adjustment
BIAS O/N
450KHZ
T103/2070
T101/612R
L102
CT101
FM/ANT
L101
CT102
AM/ANT
OUT
RESET O/N
10.7MHZ
This is a basic tuner adjustments.