Service Procedure; Micro-Computer; Alignment; Am(Mw) Alignment - Marantz SR5300 Service Manual

8. SERVICE PROCEDURE

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
TUNER
1. Requried Equipments
- AM Standard Signal Generator (AM SSG)
- Oscilloscope
- AC Voltmeter
- FM Standard Signal Generator (FM SSG)
- Stereo Modulator
Note : Disconnect external FM antenna prior to alignment.

2. Alignment

2-1. Alignment Test Points
- Audio Generator
- Distortion Meter
- DC Voltmeter
- Frequency Counter
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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
Signal Set
generator frequency
Step Subject
setting setting
1 Tunning 522kHz 522kHz
voltage
(/A/K/N) (/A/K/N)
520kHz 520kHz
(/U) (/U)
2 IF Tracking 603kHz 603kHz
(/A/K/N) (/A/K/N)
600kHz 600kHz
(/U) (/U)
3 RF Tracking 603kHz 603kHz
(/A/K/N) (/A/K/N)
600kHz 600kHz
(/U) (/U)
4 Seek level 999kHz 999kHz
(/A/K/N) (/A/K/N)
1000kHz 1000kHz
(/U) (/U)
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
Signal Set
generator frequency
Step Subject
setting setting
1 Tunning 152kHz 152kHz
voltage
2 RF Tracking 162kHz 162kHz
3 Seek level 207kHz 207kHz
Equipment Adjustment
Adjust for
connection point
DC voltmeter RF BLOCK 522 kHz : 1.0 ~ 1.3V
OSC coil
1611 kHz : 7.0 ~ 8.5V
AC voltmeter IF BLOCK Maximize audio output
oscilloscope
Coil
tape monitor
KSNT-111I
L/R
AC voltmeter RF BLOCK Maximize audio output
oscilloscope
ANT coil Repeat LOW, HIGH
tape monitor
frequency
L/R
AC voltmeter SVR 03 Tuned on point
oscilloscope
tape monitor
L/R
Equipment Adjustment
Adjust for
connection point
DC voltmeter RF BLOCK 522 kHz : 1.5 ~ 2.3V
OSC coil
1611 kHz : 6.0 ~ 7.5V
AC voltmeter RF BLOCK Maximize audio output
oscilloscope
ANT coil Repeat LOW, HIGH
tape monitor
frequency
L/R
AC voltmeter Tuned on point
oscilloscope
tape monitor
L/R
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