Onkyo HTRC 180 Service Manual

Page 1

HT-RC
Ref. No. 4174

ONKYO SERVICE MANUAL 2°

AV RECEIVER
MODEL HT-RC180(B)

Black model
\ B MDC l 120V AC, 60Hz l

SAFETY-RELATED COMPONENT
WARNING! !

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

MAKE LEAKAGE-CURRENT OR 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

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SE RVIC E PROC E DURE-1
1. Replacing the fuses

EE This symbol located near the fuse indicates that the

fuse used is show 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 le fusible utilise est e lent.

Pour une protection permanente, n'utiliser que des fusibles de meme
type. Ce demier est indique 1a qu le present symbol est apposre.

HT-R C

: HT-RC180 Canadian model

REF NO. PART NAME DESCRIPTION PART NO. REMARKS
F4000 FUSE 4A-UL/T-233 2523ZSGR !
F4000 or FUSE 4A-T/UL-ST2 252257GR !
F400] FUSE 4A-UL/TA233 252325GR I
F4001 or FUSE 4A~T/ULAST2 252257GR !
F6901 FUSE lSA-TUL-ZSOV 252303GR !
F6902 FUSE lSA-TUL-ZSOV 252303GR !
F901 FUSE lOA-UL/T-233 25233OGR 1
F901 or FUSE lOA-T/UL-STZ 252333GR !

2.To initialize the unit

1. Press and hold down VCR/DVR button, then press ON/STANDBY button when the unit is powered on.
2. After " Clear " is displayed, the preset memory and each mode stored in the memory are initialized and will
return to the factory settings, and turn to Standby mode.

3. Safety check out
(U.S.A. model only)

After correcting the original service problem, perform the following safety check before releasing the unit to

the customer.

Leakage current C heck
Measure the leakage current to a known earth ground (water pipe or conduct etc.) by connecting a leakage current
tester between the earth ground and exposed metal parts of the unit (input/output ground terminals, screw heads or
metal overlays etc.).

Plug the power supply cord directly into a 120Vac 601-12 wall socket and tum ON/STANDBY button on.

Any current measured must not exceed 0.5mA.

4. Memory Backup

This model uses a EE-PROM IC in order to retain radio presets and other settings. So, memory contents will be

kept eternally with no care.