MARANTZ SR7200
Service Manual

8. ALIGNMENT PROCEDURES
TUNER 1. Equipment Requried
- AM Standard Signal Generator (AM SSG) - Oscilloscope - AC Voltmeter - FM Standard Signal Generator (FM SSG) - Stereo Modulator - Audio Generator - Distortion Meter - DC Voltmeter - Frequency Counter

2-2. AM(MW) Alignment Output of signal generator should not be greater than necessary to obtain an optimum output reading. Signal generator modulation ................................................................. 30% Signal frequency ................................................................................ 400Hz Modulation frequency ........................................... 603, 999, 1404kHz (K,N) Modulation frequency ............................................ 600, 1000, 1400kHz (U) Switch ........................................................... press the BAND Button to AM

Step
Note : Disconnect external FM antenna prior to alignment.

Subject Tunning voltage

Signal generator setting 522kHz (K,N) 520kHz (U) 603kHz (K,N) 600kHz (U)

Set frequency setting 522kHz (K,N) 520kHz (U) 603kHz (K,N) 600kHz (U) 603kHz (K,N) 600kHz (U) 999kHz (K,N) 1000kHz (U)

Equipment connection DC voltmeter

Adjustment point RF BLOCK OSC coil Adjust for 522 kHz : 1.0 ~ 1.3V 1611 kHz : 7.0 ~ 8.5V

1

2. Alignment.
2-1. Alignment Test Point

2

IF Tracking

AC voltmeter oscilloscope tape monitor L/R AC voltmeter oscilloscope tape monitor L/R AC voltmeter oscilloscope tape monitor L/R

IF BLOCK Coil KSNT-111I

Maximize audio output

3

RF Tracking

603kHz (K,N) 600kHz (U)

RF BLOCK ANT coil

Maximize audio output Repeat LOW, HIGH frequency

4

Seek level

999kHz (K,N) 1000kHz (U)

SVR 03

Tuned on point

2-3. LW Alignment (N Version only) Output of signal generator should not be greater than necessary to obtain an optimum output reading. Signal generator modulation ................................................................. 30% Signal frequency ................................................................................ 400Hz Modulation frequency ....................................................... 162, 207, 252kHz Switch ........................................................... press the BAND Button to LW

Step 1

Subject Tunning voltage

Signal generator setting 152kHz

Set frequency setting 152kHz

Equipment connection DC voltmeter

Adjustment point RF BLOCK OSC coil

Adjust for 522 kHz : 1.5 ~ 2.3V 1611 kHz : 6.0 ~ 7.5V

2

RF Tracking

162kHz

162kHz

AC voltmeter oscilloscope tape monitor L/R AC voltmeter oscilloscope tape monitor L/R

RF BLOCK ANT coil

Maximize audio output Repeat LOW, HIGH frequency

3

Seek level

207kHz

207kHz

Tuned on point

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