Sanyo FXC-750GD, Руководство по обслуживанию

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— 3 —
FM SG
&
STEREO SG
(See Fig. 1.2)
FM
DUMMY
ANTENNA
(See Fig. 1.3)
DUMMY
LOAD &
SW BOX
SET
T.P
DISTORTION METER
AC VOLTMETER
VTVM
Fig. 3 * SG frequency should be as accurate as possible.
ALIGNMENT OF
FM RF & IF
SECTION
Set the radio for FM reception. FM signal generator should be coupled with antenna receptacle, through dummy (see Fig.1-2).
STEP
1
2
3
4
5
6
GENERATOR
FREQUENCY
Non-Mod.
Non-Mod.
98.1MHz, 97.1MHz
1kHz, 75kHz dev.
SG att:66dB (1mV)
98.1MHz, 97.1MHz
1kHz, 22.5kHz dev.
SG att:Less than 8dB
88.5 MHz
SG att: 8~12dB
87.5 MHz
97.1 MHz, 11dB
98.1MHz, 107.1MHz
88.5 MHz
SG att: 11dB
RADIO DIAL
SETTING
87.5MHz
87.5MHz
98.1MHz
97.1MHz
98.1MHz
97.1MHz
88.5 MHz
87.5 MHz
97.1MHz
98.1 MHz
107.1 MHz
88.5MHz
OUTPUT
INDICATOR
DC VTVM to test
point
VT
DC VTVM to test
point
VT
AC VTVM across
speaker or 4 ohms
load
AC VTVM across
speaker or 4 ohms
load
AC VTVM across
speaker or 4 ohms
load
AC VTVM across
speaker or 4 ohms
load
ADJUST-
MENT
L105
FM OSC
(L105)
L151
FM DET
L104
FM IFT
L101
FM ANT
L103
FM RF
L101
FM ANT
L103
FM RF
REMARKS
Adjust for 7.3V.
Check the voltage more than 1.1V.
Adjust for Minimum Distortion.
Adjust for Maximum Level.
Adjust for Maximum Level.
(Adjust for Minimum Distortion.)
Check for SPEC.
For RADIO DIAL SETTING in the table below, settings marked are for the (200 kHz step) mode and those marked are for
the (50 kHz step) mode.
In steps 1 to7, no mark frequency means that is common for both (200 kHz step) and (50 kHz step) mode.