ADJUSTMENT
Adjusting Idling Current
NOTE
：Adjusting the idling current when "
ECO Mode
" is set may damage the Power AMP.
1. Preparation
(1) Prepare a DC voltmeter.
(2) Place the unit under normal usage conditions, away from highly ventilated areas such as next to an
air conditioning machine or electric fan.
The set requires an ambient temperature of 15℃ to 30℃ and standard humidity.
(3) Settings of This Unit
• POWER (Power source switch)
STANDBY
• SPEAKER (Speaker terminal)
No load
(Do not connect equipment such as speakers or dummy resistors.)
2. Adjustment Procedure
(1) Make sure that "
ECO Mode
" is off.
• Press the "
SETUP
" button on the remote control to display the GUI menu.
• Press the cursor button to select "
General
" → "
ECO
" → "
Mode
" → "
Off
".
(2) Remove the top cover and turn
VR401
(ALL Channel) of the AMP PCB counterclockwise(
c
) as far as
possible.
(3) Connect the DC Voltmeter to the test points.
FRONT-Lch
: CP501
: VR401
FRONT-Rch
: CP502
: VR402
CENTER ch
: CP503
: VR403
SURROUND-Lch
: CP504
: VR404
SURROUND-Rch
: CP505
: VR405
SURROUND-BACK Lch
: CP506
: VR406
SURROUND-BACK Rch
: CP507
: VR407
(4) Connect the power cord to an outlet. Next, press the power button to turn on the power.
(5) Set this unit as follows.
MASTER VOLUME
: "---" (
c
min.) : turn counterclockwise to the lowest position.
SPEAKER (Speaker terminal)
: No load
(Do not connect equipment such as speakers or dummy resistors.)
MODE
: MCH STEREO
FUNCTION
: DVD
(6) Turn
VR401
clockwise (
x
) and adjust the voltage of the test point to "
8.0mV ± 0.5mV DC
" within 2
minutes.
(7) Check whether the voltage is within the range "
8.0mV +1mV/-2mV DC
" 10 minutes after adjust-
ment.
(8) Adjust the variable resistance of each channel using the same method.
S Lch
F Rch
C ch
S Rch
S Back Lch
S Back Rch
VR404
CP504
VR403
VR405
CP505
VR402
CP502
VR407
CP506
VR406
CP503
CP507
F Lch
CP501
VR401
DC Voltmeter
AMP UNIT
Before Servicing
This Unit
Electrical
Mechanical
Repair Information
Updating
163
