Top View; Am Alignment Procedure - Rotel Rx-603 Technisches Handbuch

AUDIO
GENERATOR
ES RX-603
L-CH
AC VIVM
o: sol
Fa
Rey
MAIN AMP PCB TOP VIEW
APPLY 1000Hz (SINE WAVE)
SIGNAL TO AUX JACK.
RY 701
ROTATE AND SET VOLUME
CONTROL TO OBTAIN 21 VOLTS
lO]
lo
READING ON AC VTVM.
ADJUST POTENTIOMETER VR603
VR603 VR604 (VR604 FOR R-CH ) SO THAT
À OVERLOAD PROTECTION RELAY
IS JUST DISENGAGED.
Fig. 2. Overload Protection Level Adjustment
Abb. 2. Uberlastungsschutzpegel-Einstellung
Fig. 2. Réglage du niveau de protection contre la surcharge
AM Alignment Procedure
Instruments: AM Signal Generator and AC VTVM.
Notes: Set Function Selector switch to AM.
Input signal must be kept as low as possible to avoid AGC action.
© Generator °
Tuning Dial Output Indicator Adius Adiust-for
Pin No. 23 (on 455kHz (400Hz | Non interfering AC VTVM to 1204 and L203 Maximum
IF board) 30% mod.) at low end of TAPE OUT jack. | (on IF board) reading on
through a 0.01 scale. AC VTVM.
mfd capacitor.
1400kHz (400 1400kHz CT5 (OSC) and
Hz 30% mod.) CT4 (ANT) Trim
(on Front-end)
Repeat steps 2 and 3 until no further improvement is noticed.