Philips FR-975, Руководство по обслуживанию

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7A-2
PCS 69 714
TUNER 95 bis Adjustment Table (FM, MW, LW with Frame antenna)
Waverange Input frequency Input Set tuned to Adjust Output Scope / Voltmeter
VARICAP ALIGNMENT
FM (50) 108 MHz check 7 ... 9V
87.5 - 108 MHz 87.5 MHz check 1.3 ... 2V
MW (9)
1602 kHz 5123
8.3V
±
0.2V
531 - 1602 kHz 531 kHz check
1V
±
0.4V
LW (3) 279 kHz 5122 8.3V
±
0.2V
153 - 279 kHz 153 kHz check 1V
±
0.4V
FM – DETECTION
FM
98 Mhz 1mV
continuous wave
short pin 21 (IC7101)
to ground
98 MHz 5107
0mV
±
3mV
FM – VCO
98 Mhz 1 mV
FM
continuous wave
98 MHz 3142
152kHz
±
1 kHz
DISTORTION
98 Mhz 1 mV mixcoil
FM
90 % L + 98MHz inside Distortion
9 % pilot Tuner minimum
mod = 1kHz 1110
AM – IF
450kHz 5111
∆
f = 10kHz symmetrical and
Low as possible max. height
MW
Swept signal MW 5112
450kHz 5114
0mV
±
2mV
continuous wave
AM - RF
558kHz 558kHz 5102
MW
Mod = 1kHz MAX
30 % AM
1494 kHz 1494kHz 2106
198kHz *
LW
mod = 1kHz 198kHz 5103 MAX
30 % AM
* Signal send via a frame antenna
adjtable for 3104 217 04121/04341
(..) = tuning grid in kHz repeat
100nF
50E
2
1
A
C
A
A
2
1
B 7
7
4
3
6
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