Samsung MAX-440 - Page 22

7-1-3. Tuner malfunction(FM/AM)
Check the
RIC1
Check
the
voltage
ROQ1,2,5
Power
impaired.
ok(10V)?
control
ok?
Repair
defects
HZD(5.6V)
check the voltage ok?
HIC1(LM7000)
FM/AM BAND
switching ok?
Check
TUNER IC(KA2295Q)
PIN #14,15;9V
PIN #9:FM;9V
AM;0V?
1) POWER impaired,
so repair defects.
2) LM7000 Oscillator
(TCY1:7.2MHz) ok?
3) System Line
ok?
LM7000
CONTROL
ok?
Check for p-com IC
Replace LM7000
Check the
LM7000
CONTROL
ok?
Check HIC1
FM Oscillator(Pin 14),
AM Oscillator(Pin 13)?
Check FEP interior
pattern, and any
disconnecting line.
LPF(MLPF 1L/1R)
Output is ok?
Check TDA7318
function
ok?
MAX-440 -26-