Onkyo HTR 500 Service Manual

Page 1

ONKYO SERVICE MANUAL

AV RECEIVER
MODEL HT-R500

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Black models
BMDD 120V AC, 60Hz

SAFETY-RELATED COMPONENT
WARNING! !

COMPONENTS IDENTIFIED BY MARK A ()N THE
SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
REPLACE THESE COMPONENTS WITH ()NKYO
PARTS WHOSE PART NUMBERS APPEAR AS SHOWN
IN THIS MANUAL.

MAKE LEAKAGE-CURRENT ()R RESISTANCE
MEASUREMENTS TO DETERMINE THAT EXPOSED
PARTS ARE ACCEPTABLY INSULATED FROM THE
SUPPLY CIRCUIT BEFORE RETURNING THE
APPLIANCE TO THE CUSTOMER.

ONKYO®

IMAGINATIVE SIGHT & SOUND

HT-R500

Ref. No. 3728
042002

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SERVICE PROCEDURES

1. Replacing the fuses

EE' 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.

EE' Ce symbole indique que Ie fusible utlise est a rapide.
Pour une protection permanente, n'untiliser que fusibles de
meme type. Ce damier est la qu Ie present symbol est
appse.

CIRCUIT NO. PART NO. DESCRIPTION
F6901, 252198 or 8A-UL or
F6902 252261 8A-T/UL-ST2,Fuse
F901 252198 or 8A-UL or
252261 8A-T/UL-ST2,Fuse

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-f 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.

4. Memory Preservation

This unit does not require memory preservation batteries. A
built-in memory power 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.