Marantz SR5300, Service Manual

Page: 38 / 81

8. SERVICE PROCEDURE
TUNER
1. Requried Equipments
- AM Standard Signal Generator (AM SSG) - Audio Generator
- Oscilloscope - Distortion Meter
- AC Voltmeter - DC Voltmeter
- FM Standard Signal Generator (FM SSG) - Frequency Counter
- Stereo Modulator
Note : Disconnect external FM antenna prior to alignment.
2. Alignment
2-1. Alignment Test Points
MICRO-COMPUTER
To check the microcomputer firmware version, press 6.1 CH IN button and SLEEP button simultaneously while
power is on. The version number is shown on the main display of the unit.
Ex. V 020716 01
Step Subject
Signal
generator
setting
Set
frequency
setting
Equipment
connection Adjustment
point
Adjust for
1 Tunning
voltage
522kHz 522kHz DC voltmeter RF BLOCK
OSC coil
522 kHz : 1.0 ~ 1.3V
1611 kHz : 7.0 ~ 8.5V
2 IF Tracking 603kHz 603kHz IF BLOCK
Coil
KSNT-111I
Maximize audio output
3 RF Tracking 603kHz 603kHz AC voltmeter
oscilloscope
tape monitor
L/R
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
4 Seek level 999kHz 999kHz
(/A/K/N) (/A/K/N)
(/A/K/N) (/A/K/N)
(/A/K/N) (/A/K/N)
(/A/K/N) (/A/K/N)
520kHz
(/U)
520kHz
(/U)
600kHz
(/U)
600kHz
(/U)
600kHz
(/U)
600kHz
(/U)
1000kHz
(/U)
1000kHz
(/U)
SVR 03 Tuned on point
Step Subject
Signal
generator
setting
Set
frequency
setting
Equipment
connection Adjustment
point
Adjust for
1 Tunning
voltage
152kHz 152kHz DC voltmeter RF BLOCK
OSC coil
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
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 (/A/K/N)
Modulation frequency ............................................ 600, 1000, 1400kHz (/U)
Switch ........................................................... press the BAND Button to AM
2-3. LW Alignment (/A/N)
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
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