Sanyo DC-PT80 - Page 11

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TUNER ADJUSTMENT
1. TUNER ALIGNMENT SPECLIST
POWER SUPPLY VOLTAGE CN:220V,50Hz KR:220V,60Hz ,AU:240V,50Hz SS:115/230V/50/60Hz
FM
STANDARD CONDITION
ANTENNA : 75ohm UNBALANCED DIRECT
MOD. FREQ.
: 1kHz
DEVIATION
: MONO ±22.5kHz / STEREO ±22.5kHz(MAIN), ±6.75kHz (PILOT)
RF LEVEL : dBµV EMF
OUTPUTLEVEL : about 100mV at TP13,TP14,TP15
ITEM FREQ. INPUT OUTPUT ALIGNMENT
IF(0V)
ALIGNMENT
98.0MHz FM ANT.(H)
FM ANT.(E)
SG=66dBµV
IC231
3 - 22PIN
TP24,25
Alignment Parts is XF233
Alignment Voltage(IC231 3-22PIN) is 0.0±0.05V
87.5MHz
CHECK VT voltage of 87.5MHz is about1.3±0.5V ..
COVER
VOLTAGE
108.0MHz
TP11(H)
TP12(E)
Confirm voltage of 108.0MHz is about 7.2V.(<8.0V)
90.0MHz TRACKING
106.0MHz
FMANT.
SG 8dBµV
TP13(L)
TP14(R)
TP15(E)
AUTO STOP 98.0MHz FM ANT.(H)
FM ANT.(E)
ST SENS. 98.0MHz FM ANT.(H)
FM ANT.(E)
SEPARATION 98.0MHz FM ANT.(H)
FM ANT.(E)
SG=66dBµV
TP13(L)
TP14(R)
TP15(E)
AM STANDARD CONDITION
ANTENNA : IRE LOOP(SG) <-- 60cm <--1AV0L90B00500(SET)
MODURATION : 1kHz,30%
RF LEVEL : dB µV EMF
OUTPUT LEVEL : about 100mV at TP13,TP14,TP15
ITEM FREQ. INPUT OUTPUT ALIGNMENT
IF
ALIGNMENT
522kHz LOOP ANT. IC231
19
PIN_DCCUT
(TP26) GND
Alignment Parts is T2002
Adjust T2002 to become waveform like this or
output signal max.
COVER Voltage 522kHz TP11(H) Alignment Parts is L2153
Alignment voltage of 522kHz is 1.0V±0.1V.
1611 kHz TP12(E) Confirm voltage of 1611kHz is about 7.1V.(<8.0V)
603kHz Alignment Parts is L2151
Adjust L2151 to become output signal max.
TRACKING
1404kHz
LOOP ANT
SG 80dB
µV/m
TP13(L)
TP14(R)
TP15(E)
Alignment Parts is CT252
Adjust CT252 to become output signal max.
AUTO STOP 999kHz LOOP ANT Confirm AUTO STOP SENS.
If AUTO STOP SENS.is bad,readjust T2002,L2151and CT252.
Max.
Max.
Max.
Max.