External View - Kenwood KR-7400 Service Manual

EXTERNAL VIEW
The KR-7400 is one of the NEW KR series and the highest
grade products. Its tuner section consists of frequency
linear 4 gangs variable capacitor, linear scaled front dial
calibrations, LED (light emitted diode) dial pointer, 3 MOS
FET's of front end, local oscillator with buffer amplifier,
PLL 1C of MPX stage, 2 meters for accurate tuning, and FM
DETOUT jack.
PLL assures excellent channel separation and improved
stability. FM DET OUT jack is available, permitting this
receiver to be ready for FM 4-channel broadcasts whenever
they became available. Its tuner section is also super
sensitivity and higher spurious response rejection ratio.
Meanwhile, main amplifier section consists of direct-
coupled with differential amplifier, and SOA limiter and
DC drift of center voltage protection.
They assures to protect the damage of power transistor and
spea kers.
Driver stage is pure complementary circuit. Equarizer and
tone amplifier have dual power supply and low noise
dual-can type 1C. One of the special feature of KR-7400 is
the availability of two independent tape monitor circuits
which permit tape dubbing from one tape recorder to
another while listing to a completely different source
such as an FM broadcasts. 4-CH OUT-IN for those who
wish to enjoy 4-channel reproduction can do so through
this receiver by connecting a SQ, RM, or CD^l- type
adaptor to these jacks. Tuner and audio section in
KR-7400 can stand comparison with separated TUNER
and AMPLIFIER.
Pin jack Terminal srtips
(El 1-0104-05) (E20-0418-13)
GND terminal Slide switch Ferrite ant. AC outlet * Fuse holder
(N08-0128-05) (S31-2007-05) (T90-0031-05) (E08-0221-05)
Pin jack * Power cord
Push terminal
(E21-1201-05)
Pin jack
(El 3-0604-03)
(El 3-0410-03)
* Refer to parts list
the unit is K type.
3