MARANTZ SR5000U1B
Manual de Servicio

6. ADJUSTMENT PROCEDURE
ALIGNMENT INSTRUCTIONS
(1) EQUIPMENT NEEDED AM Standard Signal Generator FM Standard Signal Generator Oscilloscope VTVM (AC,DC) AM Test Loop Antenna (AM Adjustment) FM Dummy Antenna (FM Adjustment) Stereo Signal Generator (RDS IN : EUROPE ONLY) Frequency Counter Distortion Analyser
AM-SG

IMPORTANT 1.Check power-source voltage. 2.Set the function switch to band aligned. 3.Keep the signal input as low as possible to adjust accurately. 4.Modulation and modulation frequency.

(2) FM, AM TRACKING VOLTAGE ADJUSTMENTS
AM,FM DC Voltmeter : Connect to test point TP1 and GND NO Band 1 2 FM AM AM Frequency 87.50 MHz 522 kHz 520 kHz Adjust for 1.6V 1.0V 1.0V Adjustment L7 L13 L13
DC EVM

(4) FM RF ADJUSTMENTS
Signal generator : Connect to FM Ant. (FM 75 ohm) through the dummy. Adjust for indication of VTVM of the wave form of scope to be maximum. Band NO FM 1 3 Frequency 100.10 MHz Adjust for
Max sensitivity

Adjustment L2,L5,L6,T1

Repeat steps 1 several times.
AC EVM OSCILLOSCOPE

Band AM

Item

Modulation 30 %

Modulation freq. 400 Hz 1 kHz

UNIT FM AM GND GND

kHz

FM (EUR, OVC) MONO : 40 kHz DEV. SR5000/N1B STERO : L=R (40 kHz), PILOT (7.5 kHz) 47.5 kHz DEV. SR5000/K1B RDS : STEREO + RDS (1.2 kHz) 48.7 kHz DEV. FM (USA) SR5000/U1B MONO : 75 kHz DEV. (100 %) DTEREO : L=R (67.5 kHz), PILOT (7.5 kHz)

TP1
AM LOOP antenna
60cm OUTPUT terminal

1 kHz

(3) AM RF ADJUSTMENTS
Signal generator : Connect to the AM Ant. Coil through the loop antenna. Adjust for the indication of VTVM of the wave form of scope to be maximum. /N1B, /K1B Band NO 1 AM 2 3

(5) FM MONO DISTORTION ADJUSTMENTS
Signal Generator : Connect to FM Ant. (FM 75 ohm) through the dummy. DC Voltmeter : Connect to TP2(+),TP3(-) through the choke coil (100uH). Distortion Meter : Connect to output L or R.

TUNER ADJUSTMENT POINT

Frequency 612 kHz

Adjust for
Max sensitivity

Adjustment L12,T13 Band NO FM 1 2 3 Frequency Adjust for Adjustment T11 T12

1503 kHz Max sensitivity CT1 Repeat steps 1 and 2 several times.

100.10 MHz DC Voltmeter 0V 100.10 MHz Minimum T.H.D

Repeat steps 1 and 2 several times.
AC EVM OSCILLOSCOPE

/U1B Band NO 1 AM 2 3 Frequency 610kHz 1510 kHz Adjust for
Max sensitivity Max sensitivity

Adjustment L12,T13 CT1

FM-SG
MHz OUT

Repeat steps 1 and 2 several times.
UNIT
DC EVM

FM Dummy

FM-SG
MHz OUT

FM 75ome in
UNIT
TP12 TP13 output Choke coil 100 H

OUTPUT

FM Dummy DISTORTION ANALYSER

FM 75ome in

37

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