Marantz SR-53 - Page 17

@ Set to T.R point ME mode of the service program, after that, needs POWER OFF and POWER ON again.
(P1) to (P7) in the Digital Readout Frequency Setting column shows preset numbers for the above mode.
Before alignment, connect a dummy resistor of 47 kohms to the tape out terminal.
5. FM Alignment Procedures
(Function switch at “FM” position and MODE switch at “MONAURAL” position)
@ FM RF Alignment
Digital
; F Signal , : Readout
Signal Soutes Connection Frequency Indicator Connection Frequency
Setting
FM signal generator to FM
antenna terminal. Adjust
the RF signal output so that
slight noise occurs at the 98.0 MHz
upper and lower sides of the
output waveform.
Front end IFT for
maximum output and
minimum distortion.
AC VTVM to L- or R-
channel output (TAPE
OUT) ‘
FM signal generator 500 uwV
output to FM antenna
terminal (75-ohm).
98.0 MHz
L201
core for minimum
distortion.
Distortion meter to L- or
R-channel output
(TAPE OUT)
@ FM IF Alignment
(Function switch at ‘“FM" position and MODE switch at ‘AUTO STEREO” position)
Digital
Readout
Frequency
Setting
Signal
F Indicator Connection
requency
Signal Source Connection.
FM signal generator 500 nV Stereo VTVM to L-channel
output modulated by MPX L-channel | output (TAPE OUT
signal generator to FM (1,000 Hz) | L channel) Eroakend ler for
antenna terminal (75-ohm).
Modulation level: Stereo VTVM to R-channel
IHF 67.5 kHz +9% pilot dev. R-channel | output (TAPE OUT
DIN 40 kHz +8% pilot dev. (1,000 Hz) | R channel)
minimum distortion.
@ Muting Level Alignment
(Function switch at “FM” position and MODE switch at “‘“AUTO STEREO” position)
Digital
Signal Indicator Connection Rasaeek
Frequency Frequency
Setting
Signal Source Connection
FM signal generator 6.3 nV 98.0 MHz R211 to a point at which
output
to
FM
antenna
(P2)
terminal (75-ohm) SroMie’ tUN ee:
al PCS 71 241