Onkyo TXNR 525 Service Manual

Page 1

ONKYQ, SERVICE MANUAL

AV RECEIVER
MODEL TX-N R525(B)/(S)

Norm Amerlcan and ralwanese models ---> MUSIC OPTIMIZER" Norm Amerlcan and Taiwanese models --> DIMMER
European. Australian and Aslan models ---> FURE AUDIO" European, Australlan arm Aslan models ---> RTIPTVITP"

TX-N R525

Ref. No. 4431
032013

Black and Silver models

B MDC, B MDF

120V AC, 60Hz

B MMK, B MMQ, B MMR

220-240V AC, 50/60Hz

B MPP, B MPB, B MPA, S MPP

230V AC, 50Hz

SAFETY-RELATED COMPONENT
WA R N I N G ! !

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 Corporation
Service Department

RC-865M

Page 2

TX-N R525

SERVICE PROCEDURE-1

1. Replacing the fuses
EE This symbol located near the fuse indicates that the

fuse used is slow operating type, For continued protection against

fire hazard, replace with same type fuse, For fuse rating, refer to : 120V,Canadian model

the marking adjacent to the symbol. I 230V,CE(European) country model
: 230V,UK model

EE' Ce symbole indique que le fusible utilise est e lent. 3 220/230-240V1 Korean model

Pour une protection permanente, n'utiliser que des fusibles de meme 3 220/230-240V,Hong kong model

: 230V,Australian model
: 220/230-240V,Chinese model
: 120V,Taiwanese model

type. Ce demier est indique la qu le present symbol est apposre.

REF NO. PART NAME DESCRIPTION PART NO. REMARKS

F6401 FUSE 10A-UL/T-233 252330GR !

F6401 0r FUSE 10A-TlUL-ST2 2523336R !

F6402 FUSE 10A-U LIT-233 252330(3R !

F6402 or FUSE 1OA-T/UL-ST2 25233SGR !

F9002 FUSE 4A-SE-EAK 252077GR !
F9002 FUSE 8A-UL/T-233 252329GR !

F9001 FUSE 1A-SEUL-TL250V 252397T !

F201 FUSE 4A-SEUL-TL250V 252392T !

2. 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 Check
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 60Hz wall socket and turn ONISTANDBY button on.
Any current measured must not exceed 0.5mA.

3. To initialize the unit
Press ONISTANDBY button while pressing down VCR/DVR(TX-NR525/HT-RC55O is CBLISAT) button
when the unit is POWER ON, then the FL displays "CLEAR, and turn to STAND-BY. Remove power cord from power line.

4. To check version of each Firmware
a. Push STANDBY/ON key while pushing down DISPLAY key to display MMPU(Main Microprocessor) version.

e.g.

M1. 0 7/13204A L N - Version of MMPU displayed only for 3 seconds.

b. In display version, -(TONE) key and +(TONE) key are pushed to display another F/W version.

E -(TONE) 5 +(TONE)

69' M1.01/13204ALN MMPU

-(TONE)? i+(TONE) :

6'9 D1.02/13202AEA DSP gnelfigpgigg'cgvnfi;
-(TONE) +(TONE)

i 59 0'1.00/12218AVL HDMl/Video

Microprocessor