Electrical Adjustments - Sanyo FXD-770GD Service Manual

DUMMY BOX SCHEMATIC
AM S.G.
(50Ω)
AM DUMMY ANTENNA
AM RF & lF
ALIGNMENT OF
Set the radio for AM reception. AM signal generator should be coupled with antenna receptacle through dummy (see Fig.1-1).
Set VOLUME control to maximum and TONE to center. Attenuate signal generator output to maintain 0.5 watts (1.4 volts across
4 ohms load) on AC voltmeter.
FM SG
STEREO SG

ELECTRICAL ADJUSTMENTS

PLUG TO FIT ANTENNA
CO-AX CABLE
RECEPTACLE OF UNIT
33Ω 15PF
60PF
METAL SHIELD CAN
Fig. 1-1
LEFT CHANNEL OUTPUT
UNIT
RIGHT CHANNEL OUTPUT
DUMMY LOAD & SWITCH BOX (FOR STEREO UNIT)
SECTI0N
VTVM
(See Fig. 1.2)
FM
DUMMY
&
ANTENNA
CO-AX CABLE
10Ω
FM S.G.
(50Ω)
60Ω
FM DUMMY ANTENNA
Fig. 1-2
L
4Ω 20W
R
AC V.T.V.M. OR SCOPE
L
4Ω 20W
R
Fig. 1-3
T.P
(See Fig. 1.3)
DUMMY
SET
LOAD &
SW BOX
Fig. 2 * SG frequency should be as accurate as possible.
— 4 —
PLUG TO FIT ANTENNA
RECEPTACLE OF UNIT
45Ω
METAL SHIELD CAN
DISTORTION METER
AC VOLTMETER