Onkyo HTR 550 Service Manual

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Extracted text from Onkyo HTR 550 Service Manual (Ocr-read)

Page 1

HT-R550

Ref. No. 4010

ONKYO SERVICE MANUAL

AV RECEIVER
MODEL HT-R550

FIG-681 M

Black and Silver models

B MDD 120V AC, 60Hz --- ---
B MDC 120V AC, 60Hz S MDC 120V AC, 60Hz
B MPA 230-240V AC, SOHZ S MPA 230-240V AC, 50Hz

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 0R RESISTANCE
MEASUREMENTS TO DETERMINE THAT EXPOSED
PARTS ARE ACCEPTABLY INSULATED FROM THE
SUPPLY CIRCUIT BEFORE RETURNING THE
APPLIANCE TO THE CUSTOMER.

ONKYO®

IMAGINATIVE SIGHT SI SOUND

042007

Page 70

OPERATION CHECK-5
DEBUG MODE-2

Trouble Cause Analysis by Debug Mode

This debug mode will help in analysing digital audio no sound trouble.
Check information on FL display and the related devices or circuilsi

to "FF"

Digit No. .
on FL Symptom on Display Cause Check
(D "E" is displayed No input signal to DIR Related devices from digital input to Q301
@ Displayed freq. is different N 0 input signal to DIR Related devices from digital input to Q301
from input signal freq.
@ Displayed format is different No input signal to DIR Related devices from digital input to Q301
from input signal format
"04" or "11" do not change ROM or RAM error Q28], QZSZ & related devices

Displayed format is different
from input signal format

Input signal to DSP is no good

Related devices from Q301 to Q201

669

x is displayed

Interface between DSP and
Microprocessor is no good

Related devices from 0701 to Q201

This identifies IC which
outputs error

The IC outputs error to main
microprocessor

Q5501, Q201, Q301 & related devices

05E

Page 100

Pom

R5180 NF CARBON R R251- 10 415471004T
R5181 NF CARBON R R25J-10 415471004T
R5182 NF CARBON R R251- 10 415471004T
R5183 NF CARBON R R25J-10 415471004T
R5184 NF CARBON R R251- 10 415471004T
R5185 NF CARBON R R25J-10 415471004T
R5186 NF CARBON R R251- 10 415471004T
R5190 NF CARBON R R25J-10 415471004T
R5191 NF CARBON R R251- 10 415471004T
R5192 NF CARBON R R25J-10 415471004T
R5193 NF CARBON R R251- 10 415471004T
R5194 NF CARBON R R25J-10 415471004T
R5195 NF CARBON R R251- 10 415471004T
R5196 NF CARBON R R25J-10 415471004T
R5200 CARBON R RIM-22K 4173422341
R5201 CARBON R R16J-22K 417342234T
R5202 CARBON R R161-22K 417342234T
R5203 CARBON R R16J-22K 417342234T
R5204 CARBON R R161-22K 417342234T
R5205 CARBON R R16J-22K 417342234T

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