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Tuner Adjustments; Wiring Connection - Sanyo MCD-ZX600F Service Manual

Cd portable radio cassette recorder
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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.
Set of unit
Supply voltage
: DC 12.0V
Speaker impedance : 8 ohms
Standard output
: 50 mW
Function switch
: RADIO
a. Parts Location
RESET O/N
L102
CT101
FM/ANT
L101
a. AM Adjustment
Band switch : MW
Adjusting
Connections
Step
Circuit
lnput
Output
Closed the output
Connect sweep
terminal by sweep
1
IF
generator to(19)IC101
generator,it place
(H) 0and C130(E)
to AM ANT
2
Tuning
Connect AM SG to
Connect VTVM to
3
coverage
test loop
speaker terminals.
Connect AM SG to
Connect VTVM to
4
Tracking
5
test loop
speaker terminals
b. FM Adjustment
Band switch : FM
Adjusting
Connection
Step
Circuit
Input
Output
Connect sweep
Connect VTVM to
1
IF
generator to IC101
generator to (19)
(22)pin (H) &
IC101(H) and C130(E)
IC101(23)pin (E)
2
Tuning
Connect FM SG to
Connect VTVM to
3
coverage
FM ANT(H) D101
speaker terminals.
4
Connect FM SG to
Connect VTVM to
Tracking
5
FM ANT(H) D101
speaker terminals.
This is a basic tuner adjustments.
BIAS O/N
450KHZ
T103/2070
10.7MHZ
T101/612R
CT102
AM/ANT
OUT
SG
Position of
VTVM
Adjustment
Tuning dial
Oscilloscope
Frequency
450KHz
Low
T103
522 KHz
Low end
T101
VT Low: 1.5V±0.1
1611 KHz
High end
VT Hi: 7.5V±0.2
603 KHz
603 KHz
MW ANT
Max.
1404 KHz
1404 KHz
CT102
FM Dummy antenna : 75 ohms unbalance
position of
VTVM
SG Frequency
Adjustment
tuning dial
Oscilloscope
10.7MHz
Low
87.5 MHz
Low end
L102
VT Low : 2.1V±0.1
108 MHz
High end
VT Hi : 7.2V±0.1
90.0 MHz
90.0 MHz
L101
Max.
106.0 MHz
106.0 MHz
CT101
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WIRING CONNECTION

This is a basic wiring connection.
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