Sanyo FXR-725GD Servise Manual page 9

GENERATOR
STEP
FREQUENCY
1 Non-Mod.
2 Non-Mod.
3 98.1MHz
1kHz, 22.5kHz dev.
SG att:66dBµ(1mV)
4 98.1MHz
1kHz, 22.5kHz dev.
SG att:6dBµ
5 98.1MHz
SG att:6dBµ
6 87.5MHz
107.9 (108) MHz
SG att:6dBµ
7 98.1MHz
SG att:25dBµ
7' 98.1MHz
RDS 1kHz, 22.5kHz dev.
SG att:33dBµ
SETTING UP TEST MODE AT STEP 7 - SEE PAGE 10
ALIGNMENT OF FM MULTIPLEX SECTION
FM signal generator should be modulated by FM stereo sig-
nal generator.
Modulation level: 19kHz 10% (7.5kHz dev)
1000Hz 30% (22.5kHz dev)
FM signal generator output level:
Frequency: 98.1 MHz.
MODULATION
STEP
FREQUENCY
1 19kHz & 1000Hz
(Left Channel)
SG att:66dBµ
2 19kHz & 1000Hz
(Right Channel)
3 19kHz & 1000Hz
(Left Channel)
SG att:47dBµ
RADIO DIAL OUTPUT
SETTING INDICATOR
87.5MHz DC VTVM to test
point
VT
107.9MHz DC VTVM to test
108MHz point
VT
98.1MHz AC VTVM to test
point
VT
98.1MHz AC VTVM across
speaker or 4 ohms
load
98.1MHz AC VTVM across
speaker or 4 ohms
load
87.5MHz AC VTVM across
107.9 (108.0 ) MHz speaker or 4 ohms
load
98.1MHz Adjust so that the
TEST MODE "ST" mark of LCD
Display appears
98.1MHz Adjust like to
TEST MODE appear for 0.95 of
LCD Display
66dBµ (1mV)
OUTPUT INDICATOR
AC VTVM across Right speaker or
Right channel load
AC VTVM through Left speaker or
Left channel load
AC VTVM across Right speaker or
Right channel load
— 7 —
ADJUST-
MENT
— Check the voltage more than 1.1V
Adjust for 6.9 ± 0.1V.
L103
FM OSC
NULL VOLTAGE to become
L110
—20±20mV
FM DET
Adjust for Maximum Level.
L107
FM MIX
L100 Adjust for Maximum Level.
FM ANT
L102
FM RF
L100 Check for SPEC.
FM ANT
L102
FM RF
R129 Sensitivity of the seeking fre-
FM SD quency.
Sensitivity of the S meter.
R204
Set the radio for FM reception and tune to signal. Adjust vol-
ume control to provide 0.5 watt on AC VTVM and tone to
center. Set L/R balance control for equal output at each chan-
nel.
ADJUST-
MENT
R137 Adjust for minimum.
R137 Check for minimum.
R156 Adjust for 20dB Separation.
REMARKS
REMARKS