
6-2
Samsung Electronics
Troubleshooting
Yes
No
Yes
No
No
6-1-2 FM No Sound
6-1-3 AM No Sound
Voltages at
IIC1(LC1851N) and semi
conductors tuner section
are normal
Voltage at power supply
section
Check pump charge circuitry(OQ5)
connection or soldering of SCON1-
FCW2,FCON1 soldering of pin 77 of
LC72362
TCON1 is at
1.5V
¡
0.5 on low coverage
7.5V
¡
0.5 on high
coverage
Replace FET
Voltage at FET are
normal
Yes
No
No
Check pump charge circuitry
(OQ5) connection of SCON1,
FCW2, FCON1 soldering of pin77
of LC72362N
Yes
Voltage
at LC1851N(IIC1) and tuner
semi conductors are normal
(Refer to Schematic Diagram)
Voltage between
TCON1: AM(MW)
Low coverage 0.9V 0.5
High coverage 9V 0.5
LW Low coverage 0.7V 0.5
High coverage
4.5V 0.5
Check loop antenna soldering and
connection of OL1, OL2, OT1,OT2, IT2
Check voltage at power
supply section
Содержание SCM-6700
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Страница 37: ...10 3 Samsung Electronics 10 3 CD 10 3 1 Top View 10 3 2 Bottom View PCB Diagrams ...
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Страница 48: ...12 1 Samsung Electronics 12 Schematic Diagrams 12 1 Main ...
Страница 49: ...12 2 CD Samsung Electronics 12 2 1 2 3 1 2 3 Schematic Diagrams ...