ONKYO TX-SR500
Service Manual

TX-SR500/E SERVICE PROCEDURES
1. Replacing the fuses
This symbol located near the fuses indicates that the 5.Setting the voltage selector (Worldwide models fuse used is fast operating type. For continued protection against only) fire hazard, replace with same type fuse. For fuse rating refer to the marking adjacent to the symbol. Worldwide models are equipped with a voltage selector to conform with local power supplies. Be sure to set this switch to match the Ce symbole indique que le fusible utlise est a rapide. voltage of the power supply in your area before plugging in the unit. 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, 252198 or F6902 F901 F902 252261 252099 252166 or 252260 DESCRIPTION 8A-UL or 8A-T/UL-ST2,Fuse <D> 8A-EAK,Fuse <O> 6.3A-UL/T-237 or
SUBWOOFER PRE OUT

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.
ANTENNA
AM FM 75

FRONT SPEAKERS A

FRONT SPEAKERS B

SURROUND SPEAKERS CENTER SPEAKER

AC OUTLET

L
DIGITAL INPUT
OPTICAL 2 1 COAXIAL REMOTE CONTROL

L L

VIDEO 2
IN

VIDEO 1
OUT IN

DVD
IN

MONITOR OUT
VIDEO

R
S VIDEO

R

R
VOLTAGE SELECTOR
120 V

IN

OUT

IN

L R

IN

OUT

IN

FRONT

SURR

CENTER
220-230 V

L

6.3A-T/UL-ST2,Fuse <D/T/A/R/Q>
CD TAPE

VIDEO 2

VIDEO 1

R
DVD

SUB WOOFER

252076 or 3.15A-SE-EAK or 252242 3.15A-SE-TL250V,Fuse <O> F903 252075 or 2.5A-SE-EAK or 252241 2.5A-SE-TL250V,Fuse <O> 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 <A>: Australian model only

VOLTAGE SELECTOR
120 V

220-230 V

6.Setting the AM tuning step frequency
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. Safety-check out (Only U.S.A. model) After correcting the original service problem, perform the following safety check before releasing the set to the customer. Connect the insulating-resistance tester between the plug of power supply cord and screw on the back panel. Specifications: 3.3Mohm+/-10% at 500V. (Worldwide models only) You can switch the AM band tuning steps between 9 kHz and 10 kHz. The initial setting is 9 kHz. Please set the AM tuning step frequency to match the AM band tuning step frequency in your area. USA and Canadian models Other models 10 kHz 9 kHz

Press MEMORY while holding down TUNER. Note All the preset stations are erased when you switch the AM band tuning steps.

4. Memory Preservation This unit does not require memory preservation batteries. A built-in memory po wer back-up system preserves the contents of the memory during power failures and even when the unit is unplugged.The unit must be plugged in order to charge the back-up system. The memory preservation period after the unit has been unplugged varies depending on climate and placement of the unit. On the average, memory contents are protected over a period of a few weeks after the last time the unit has been unplugged. This period is shorter when the unit is exposed to a highly humid climate.

3