Philips MCM138D Service Manual page 4

SERVICE MEASUREMENT
Tuner FW
RF Generator
e.g. PM5326
Use a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz).
Tuner AM (MW,LW)
RF Generator
e.g. PM5326
Frame aerial
e.g. 7122 707 89001
To avoid atmospheric interference all AM-measurements have to be carried out in a Faraday«s cage.
Use a bandpass filter (or at least a high pass filter with 250kHz) to eliminate hum (50Hz, 100Hz).
CD
Use Audio Signal Disc SBC429
(replaces test disc 3)
DUT
L
R
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Bandpass
DUT
250Hz-15kHz
e.g. 7122 707 48001
S/N and distortion meter
e.g. Sound Technology ST1700B
Bandpass
250Hz-15kHz
DUT
e.g. 7122 707 48001
S/N and distortion meter
e.g. Sound Technology ST1700B
RECORDER
4822 397 30184 Use Universal Test Cassette Fe
S/N and distortion meter
e.g. Sound Technology ST1700B
LEVEL METER
e.g. Sennheiser UPM550
with FF-filter
LF Voltmeter
e.g. PM2534
LF Voltmeter
e.g. PM2534
DUT
LF Generator
e.g. PM5110
SBC420 4822 397 30071
L
R
S/N and distortion meter
e.g. Sound Technology ST1700B
LEVEL METER
e.g. Sennheiser UPM550
with FF-filter