Denon AVR-750

AVR-750/760/770/780
CONNECTION DIAGRAM OF MEASURING INSTRUMENTS
@ FM SECTION @ AUDIO SECTION
Idling Current (JA0241)
Required measurement equipment: DC Voltmeter
Arrangement
(1) Avoid direct blow from an air conditioner or an electric fan, and adjust the unit at normal room temperature
15°C ~ 30°C. (59°F ~ 86°F).
(2) Presetting
@ POWER (Power source switch) > ON
@ MODE (Mode button) = STEREO
& @ FUNCTION (Function button) > CD
@ VOLUME (Volume control) > 0: fully counterclockwise ( ‘e min.)
@ BASS, TREBLE (Tone control) =) 0: (Controls to center)
@ SPEAKERS (Speaker terminal ) = No load (Do not connect speaker, dummy resistor, etc.)
Adjustment
(1) Remove top cover and set VR401, VR301 and VR302 of JA0241 (Main Unit) at counterclockwise fully.
(2) Connect DC Voltmeter to test points (Lch TPL, Rch TPR, CENTER ch TPC).
Saks - FM SSG 98MHz (3) Connect power cord to AC Line, and turn power switch “ON”.
(4) Allow 15 minutes, and turn VR301, VR302 and VR401 clockwise ( O) and adjust the TEST POINTS voltage to 1.5
aay mV +0.5 mV DC
Adjust
T4
potential
difference
across
R22
to
be
within
30mvV.
(5)
After
2
minutes
from
preset,
turn
VR301,
VR302
and
VR401
to
set
the
voltage
to
3
mV
+0.5mV
DC.
JA0241 Main Unit (Component Side)
@ Initiating (Memory clearing) Method
To
clear
memory
contents
of
microcomputer
and
restore
to
the
initial
state,
take
the
following
steps;
}__
f
i
Press power switch, turn off power of the unit, and set to standby mode.
Pull out power cord from wall outlet temporally.
insert power cord into outlet while simultaneously pressing two keys of VIDEO SELECT and TUNER.
Press
power
switch
to
confirm
that
memory
contents
are
cleared.
es
sus
taaee
PONs>
MAIN UNIT
By
completion
of
the
above,
the
initial
state
is
restored.
In
case
the
memory
can
not
be
cleared
due
to
some
reasons,
ee
|
repeat
steps
1
through
3.
5D
©
me
VR401
TPL
VR301
VR302
TPR
Note:
no
ae
Ge
Tee
Oo
When in the Standby mode, the unit is in the Power OFF state when turn Power SW ON with remote control.
11