EasyManua.ls Logo

Onkyo A 9555 Service Manual

Onkyo A 9555
41 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Page #1 background imageLoading...
Page #1 background image
A-9555
SERVICE MANUAL
SERVICE MANUAL
INTEGRATED AMPLIFIER
Black, Silver and Golden models
MODEL A-9555
Ref. No. 3920
122005
G UGT, G MGT
G UDT, G MDT
G UGR, G MGR
220-230V AC, 50/60Hz
120V AC, 60Hz
220-230V AC, 50/60Hz
120V AC, 60Hz
230-240V AC, 50Hz
B UDC, B MDC
B UPP, B MPP
120V AC, 60Hz
230-240V AC, 50Hz
S UDC, S MDC
S UPP, S MPP
RC-627S
RC-627S
SAFETY-RELATED COMPONENT
WARNING!!
COMPONENTS IDENTIFIED BY MARK 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.
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

Table of Contents

Other manuals for Onkyo A 9555

Preview: Instruction Manual
Instruction Manual20 pages

Questions and Answers:

Onkyo A 9555 Specifications

A-9755

Power Output IconPower Output
power output (8 Ω, 1 kHz, DIN)150 W + 150 W
power output (4 Ω, 1 kHz, JEITA)300 W + 300 W
dynamic power (3 Ω, Front)330 W + 330 W
dynamic power (4 Ω, Front)270 W + 270 W
dynamic power (8 Ω, Front)170 W + 170 W
Audio Performance IconAudio Performance
total harmonic distortion (THD)0.08 % (1 kHz, 1 W)
damping factor25 (Front, 1 kHz, 8 Ω)
input sensitivity and impedance (CD)200 mV, 50 kΩ
input sensitivity and impedance (PHONO MM)2.5 mV, 50 kΩ
output level and impedance (REC OUT)200 mV, 2.2 kΩ
Frequency and Tone Control IconFrequency and Tone Control
frequency response (CD)10 Hz–60 kHz, +1 dB–3 dB
tone control (BASS)+10 dB, –10 dB, 100 Hz
tone control (TREBLE)+10 dB, –10 dB, 20 kHz
loudness control (50 Hz)+10 dB
loudness control (10 kHz)+2 dB
Power IconPower
power supplyAC 230-240 V, 50 Hz / AC 220-230 V, 50/60 Hz
power consumption125 W
stand-by power consumption0.3 W
Weight and Dimensions IconWeight and Dimensions
dimensions (W × H × D)435 × 144 × 431 mm
weight17.6 kg
speaker impedance4–16 Ω

A-9555

Power Output IconPower Output
power output (8 Ω, 1 kHz, DIN)100 W + 100 W
power output (4 Ω, 1 kHz, JEITA)200 W + 200 W
dynamic power (3 Ω, Front)230 W + 230 W
dynamic power (4 Ω, Front)200 W + 200 W
dynamic power (8 Ω, Front)120 W + 120 W
Audio Performance IconAudio Performance
total harmonic distortion (THD)0.08 % (1 kHz, 1 W)
damping factor25 (Front, 1 kHz, 8 Ω)
input sensitivity and impedance (CD)200 mV, 50 kΩ
input sensitivity and impedance (PHONO MM)2.5 mV, 50 kΩ
output level and impedance (REC OUT)200 mV, 2.2 kΩ
Frequency and Tone Control IconFrequency and Tone Control
frequency response (CD)10 Hz–60 kHz, +1 dB–3 dB
tone control (BASS)+10 dB, –10 dB, 100 Hz
tone control (TREBLE)+10 dB, –10 dB, 20 kHz
loudness control (50 Hz)+10 dB
loudness control (10 kHz)+2 dB
Power IconPower
power supplyAC 230-240 V, 50 Hz / AC 220-230 V, 50/60 Hz / AC 120 V, 60 Hz
power consumption120 W
stand-by power consumption0.3 W
Weight and Dimensions IconWeight and Dimensions
dimensions (W × H × D)435 × 148 × 431 mm
weight13.0 kg
speaker impedance4–16 Ω
View in Manual

Summary

Safety Warnings and Precautions

Critical Component Identification

Components marked are critical for fire/shock risk. Replace with specified ONKYO parts.

Insulation Measurement Before Return

Measure leakage-current or resistance to ensure insulation before returning to customer.

Service Procedures

Fuse Replacement Guidelines

Instructions for replacing fuses with correct type and rating to prevent fire hazard.

Unit Initialization and Pre-shipment Settings

Schematic Diagrams: Power Amplifier

Left Channel Amplifier Circuit

Detailed schematic for the left channel amplifier.

Right Channel Amplifier Circuit

Detailed schematic for the right channel amplifier.

Schematic Diagrams: Pre-Amplifier

Input Selector and Tone Control Circuits

Schematics for input selection and tone control sections.

Schematic Diagrams: Microprocessor

Microprocessor and Control Board Schematics

Detailed schematic of the microprocessor and control boards.

Schematic Diagrams: Phono Equalizer

Phono Equalizer Preamplifier Circuit

Detailed schematic of the phono equalizer stage.

Schematic Diagrams: Power Supply

Power Supply PC Board and AC Input

Schematic of the power supply board and AC input connections.

Related product manuals