Service Procedures - Onkyo TX-SR501/E Service Manual

SERVICE PROCEDURES

1. Replacing the fuses
This symbol located near the fuses indicates that the
fuse used is fast operating type. For continued protection against
fire hazard, replace with same type fuse. For fuse rating refer to
the marking adjacent to the symbol.
Ce symbole indique que le fusible utlise est a rapide.
Pour une protection permanente, n'untiliser que fusibles de
meme type. Ce darnier est la qu le present symbol est
appse.
CIRCUIT NO. PART NO.
F6901,F6902 252198 or
252261
252099
F901 252166 or
252260
F902 252076,
252242 or
252276
F903 252075,
252241 or
252275
Note: <D>:120V model only
<O>: Other models except 120V model
<T>: Asian model only for 230V
<R>: Chinese model only
<Q>: Hongkong model only
2. To initialize the unit
This device employs a microprocessor to perform various
functions and operations. If interference generated by an external
power supply, radio wave, or other electrical source results in
accident which causes the specified operations and functions to
operate abnormally.
To perform a result, please follow the procedure below.
1.Press and hold down the VIDEO-1 button, then press the
STANDBY/ON button.
2.After "CLEAR" is displayed, the preset memory and each
mode stored in the memory, such as surround, are
initialized and will return to the factory setting.
3. Unplug the power supply cord.
3. Safety-check out
(U.S.A. model only)
After correcting the original service problem, perform the
following safety check before releasing the set to the customer.
Leakage Current Check
Measure leakage current to a known earth ground(water pipe,
conduit, etc.) by connecting a leakage current tester between
the earth ground and exposed metal parts of the appliance
(input/output terminals, screwheads,metal overlays, etc.).
Plug the power supply cord directly into a 120V AC 60 Hz outlet
and turn Standby switch on. Any current meausred must not
exceed 0.5mA.
DESCRIPTION
8A-UL or
8A-T/UL-ST2 <D>
8A-EAK ,Fuse <O>
6.3A-UL/T-237 or
6.3A-T/UL-ST2,Fuse <D/T/Q/R>
3.15A-SE-EAK,
3.15A-SE-TL250V or
3.15A-SE-TL250V <O>
2.5A-SE-EAK,
2.5A-SE-TL250V or
2.5A-SE-TL250V,Fuse <O>
Page 3
4.Setting the voltage selector (Worldwide models
only)
Worldwide models are equipped with a voltage selector to conform
with local power supplies. Be sure to set this switch to match the
voltage of the power supply in your area before plugging in the unit.
Determine the proper voltage for your area: 220-230 V or 120 V. If
the preset voltage is not correct for your area, insert a screwdriver
into the groove in the switch. Slide the switch all the way to the
upper (120 V) or to the lower (220-230 V), whichever is appropriate.
COMPONENT VIDEO ANTENNA
VIDEO 1 / 2 / 3 DVD IN OUT FM
AM
IN 75
Y
P B
VIDEO 2 VIDEO 1 DVD MONITOR
P
R
OUT
IN OUT IN IN
REMOTE
DIGITAL INPUT CONTROL
OPTICAL COAXIAL VIDEO
2 1
S VIDEO
IN OUT IN IN OUT IN FRONT SURR CENTER
L L
L
SUBWOOFER
PRE OUT
R
R R
SUB
CD TAPE VIDEO 2 VIDEO 1
WOOFER
DVD
5.Setting the AM tuning step frequency
(Worldwide models only)
If you are using the Worldwide model (i.e., your TX-SR501/
TX-SR501E has a VOLTAGE SELECTOR on the rear
panel), you need to set the AM tuning interval for compati-
bility with AM broadcasts in your particular country. The ini-
tial setting is 9 kHz.
North America: 10 kHz
Other countries: 9 kHz
To set the AM tuning interval, while
TUNER
holding down the [TUNER] button,
press the [MEMORY] button.
MEMORY FM MODE
CLEAR
Note:
All presets are deleted when you change this setting.
TX-SR501/E
AC OUTLET
FRONT FRONT SURROUND CENTER
SWITCHED
SPEAKERS B SPEAKERS A SPEAKERS SPEAKER 100W MAX.
L L
L
R R
R
VOLTAGE
SELECTOR
SURROUND BACK 120 V
SPEAKER
220-230 V
VOLTAGE
SELECTOR
120 V
220-230 V