ONKYO R-805TX - Service Manual Immediate Download

FM STEREO/AM TUNER

AMPLIFIER

MODEL R-805TX

Silver model

230-240V AC, 50Hz

120 V AC, 60 Hz

SUPP, SUPT

SUDT

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK

ON THE

SCHEMATIC DIAGRAM AND IN THE PARTS LIST

ARE CRITICAL FOR RISK OF FIRE AND ELEC-

TRIC SHOCK. REPLACE THESE COMPONENTS

WITH ONKYO PARTS WHOSE PARTS NUMBERS

APPEAR AS SHOWN IN THIS MANUAL.

MAKE LEAKAGE-CURRENT OR RESISTANCE

MEASUREMENTS TO DETERMINE THAT EXPO-

SED PARTS ARE ACCEPTABLY INSULATED FORM

THE SUPPLY CIRCUIT BEFORE RETURNING THE

APPLIANCE TO THE CUSTOMER.

Ref. No. 3681

052001

R-805TX

SERVICE MANUAL

STANDBY / ON

DISPLAY

PHONES

MEMORY

CLEAR

FM MODE

PRESET

TUNING

R-805TX

FM STEREO / AM TUNER AMPLIFIER

ENERGY SAVE

ACOUSTIC

PRESENCE

OFF / 1 /2/3

CDR/PC

LINE/DVD

TAPE

INPUT

VOLUME

WIDE RANGE AMPLIFIER

TECHNOLOGY

WIDE RANGE AMPLIFIER

TECHNOLOGY

ACCUCLOCK

STANDBY / ON

DISPLAY

PHONES

MEMORY

CLEAR

FM MODE

PRESET

TUNING

R-805TX

FM STEREO / AM TUNER AMPLIFIER

ENERGY SAVE

ACOUSTIC

PRESENCE

OFF / 1 /2/3

CDR

LINE/DVD

TAPE

INPUT

VOLUME

Asian model

European model

SPECIFICATIONS

Amplier Section

Power output

20 watts per channel, min RMS, at 4

ohms, both channels driven 1 kHz,

with no mor e than 0.6% THD

15 watt per channel, min RMS, at

8 ohms, both channels driven 1 kHz,

with no mor e than 0.6% THD

2 X 20 watts at 4 ohms, 1 kHz, DIN

2 X 17 watts at 6 ohms, 1 kHz, DIN

2 X 15 watts at 8 ohms, 1 kHz, DIN

2 X 29 watts at 4 ohms, 1 kHz, EIAJ

Dynamic power output

2 X 24 watts at 4 ohms

2 X 17 watts at 8 ohms

otal harmonic distortion

0.6% at rated power

IM distortion

0.6% at rated power

Damping factor

30 at 8 ohms

Input Sensitivity and Impedance

TAPE/MD PLAY: 150 mV, 50 kohms

LINE IN: 150 mV, 50 kohms

equency and r esponse

10 to 50,000 Hz +0 / 3 dB

one contr ol

ACOUSTIC PRESENCE 1

+4 dB at 82 Hz

ACOUSTIC PRESENCE 2

+3 dB at 20.5 Hz, + 3 dB at 82 Hz

ACOUSTIC PRESENCE 3

+3 dB at 20.5 Hz, + 6 dB at 82 Hz

BASS

±8 dB at 100 Hz

TREBLE

±8 dB at 10 kHz

Signal to noise ratio

TAPE: 100 dB (IHF-A)

Muting

Tuner Section

Tuning range

FM: 87.9 to 107.9 MHz (200 kHz steps)

(U.S. & Canadian models)

87.5 to 108.00 MHz (50 kHz steps)

(Other area models)

AM: 530 to 1710 kHz (10 kHz steps)

(U.S. & Canadian models)

522 to 1611 kHz (9 kHz steps)

(Other area models)

Usable sensitivity

FM: Mono 11.2 dBf,

1.0 µV (75 ohms IHF)

0.9 µV (75 ohms DIN)

Stereo 17.2 dBf,

2.0 µV (75 ohms IHF)

23.0 µV (75 ohms DIN)

AM: 30 µV

50 dB Quieting sensitivity

FM: Mono 17.2 dBf, 2.0 µV (75 ohms)

Stereo 37.2 dBf, 20.0 µV (75 ohms)

Captur e ratio

FM: 2.0 dB

Image r ejection ratio

FM: 40 dB (U.S. & Canadian models)

85 dB (Other area models)

AM: 40 dB

IF rejection ratio

FM: 90 dB

AM: 40 dB

Signal to noise ratio

FM: Mono 73 dB, IHF

Stereo 67 dB, IHF

AM: 40 dB

Selectivity

FM: 50 dB DIN

(±300 kHz at 40 kHz Devi.)

AM Suppr ession Ratio

50 dB

Harmonic distortion

FM: Mono 0.2%

Stereo 0.3%

AM: 0.7 %

Frequency r esponse

FM: 30 to 15,000 Hz (±1.5 dB)

Stereo separation

FM: 45 dB at 1,000 Hz

30 dB at 100 to 10,000 Hz

Stereo thr eshold

FM: 17.2 dBf, 2.0 µV (75 ohms)

General

Clock precision

monthly error: +/-30 seconds

(at 25 degrees Celsius)

Power supply

AC 120 V, 60 Hz

AC 230 V, 50 Hz

Power consumption

61 W (120 V, 50 Hz)

54 W (230 V, 60 Hz)

Dimensions (W X H X D)

205 X 91 X 302 mm

8-1/16" X 3-9/16" X 11-7/8"

Weight

3.4 kg, 7.5 lbs

Specications and external appearance are

subject to change without notice as a result

of product improvement.

R-805TX

5. Changing the AM band step

The tuning step selector switch is not provided in this model.

When you change the band step, change the parts as shown

below.

To 10kHz

To 9kHz

R715

3.3k

10k

R716

5.6k

Open

6. Adjustment of clock frequency

1. Connect the frequency counter to the terminal TP701.

2. Press and hold down the MEMORY button, then press the

DISPLAY button.(All segments on FL tube light on)

3. Adjust the trimmer capacitor C707 so that the reading of

frequency counter becomes 524.288 kHz+/-1Hz.

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 po wer f ailures and ev en when the unit is

unplugged.The unit must be plugged in order to char ge the

back-up system.

The memory preserv ation period after the unit has been

unplugged varies depending on climate and placement of the

unit. On the a v erage, memory contents are protected ov er a

period of a fe w weeks after the last time the unit has been

unplugged. This period is shorter when the unit is exposed to a

highly humid climate.

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 MEMORY button, then press the

DISPLAY button.

2. Press the STANDBY/ON button.

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

(120V model only)

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.

1. Replacing the fuses

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.

Ce symbole indique que le fusible utlise est a rapide.

Pour une protection permanente, n'untiliser que fusibles de

meme type. Ce darnier est la qu le present symbol est

appse.

CIRCUIT NO.

PART NO.

DESCRIPTION

F901

F902

252158

252083

252069

Note: <D>: 120V model only

<P/T>: 230V model only

1.6A-UL/T237, Primary <D>

0.4A-SE-EAWK, Primary

<P/T>

0.8A-SE-EAK,AC outlet

<P/T>

SERVICE PROCEDURES

R-805TX

STANDBY/ON button

Input source indicators

Multi display

Timer setting

Frequency

indicators

MUTING indicator

indicators

Sleep time indicator

STEREO

MUTING

MIN

kHz

MHz

MONO

RDS

AUTO

TIMER

W.DAY

W.END

REC

SLEEP

MEMORY

WIDE RANGE AMPLIFIER

TECHNOLOGY

ACCUCLOCK

STANDBY / ON

DISPLAY

PHONES

MEMORY

CLEAR

FM MODE

PRESET

TUNING

R-805TX

FM STEREO / AM TUNER AMPLIFIER

ENERGY SAVE

ACOUSTIC

PRESENCE

OFF / 1 / 2 / 3

CDR

LINE/DVD

TAPE

INPUT

VOLUME

Remote control sensor

INPUT selector

VOLUME control

PHONES jack

ACOUSTIC PRESENCE button

ENERGY SA VE indicator

PRESET

buttons

TUNING

buttons

DISPLAY button

MEMORY button

CLEAR or

FM MODE button

ENERGY SA VE button

Display

AUTO/MONO indicator

MEMORY indicator

Tuning indicator

STEREO indicator

AM/PM indicator

RDS indicator

(non-U.S., non-Canadian models only)

European models front panel shown.

PANEL VIEWS

FRONT PANEL

REAR PANEL

SPEAKERS

OUT

CDR

TAPE

LINE/DVD

PROCESSOR

OUT

REMOTE

CONTROL

ANTENNA

CAUTION:

SPEAKER

IMPEDANCE

4 OHMS MIN.

/SPEAKER

AC OUTLET

AC 230-240V

50Hz

SWITCHED

100W MAX.

(PLAY)

(REC)

(PLAY)

(REC)

OUT

(REC)

(PLAY)

OUT

CDR

TAPE

LINE/DVD

PROCESSOR

OUT

REMOTE

CONTROL

CD recorder

Stereo cassette

tape deck

PLAY

OUTPUT

REC

INPUT

PLAY

OUTPUT

REC

INPUT

PLAY

OUTPUT

REC

INPUT

AUDIO

OUTPUT

: Signal flow

This unit (R-805TX)

(illustration is European model)

CD player

MD recorder

DVD, LD or Video equipment

OUTPUT

For the Asian model:

In addition to a CD

recorder , you can

connect a digital

audio processor to

this connector .

Connecting a sound processor (other than U.S. & Canadian models)

Connections

1 Remove the jumper plugs.

2 Connect the sound processor to the unit.

OUT

PRO

CES

SOR

Jumper plug

SPEAKERS

OUT

CDR

TAPE

LINE/DVD

PROCESSOR

OUT

REMOTE

CONTROL

ANTENNA

CAUTION:

SPEAKER

IMPEDANCE

4 OHMS MIN.

/SPEAKER

AC OUTLET

AC 230-240V

50Hz

SWITCHED

100W MAX.

OUT

PROCESSOR

OUTPUT

: Signal flow

This unit (R-805TX)

INPUT

Sound processor

R-805TX

You can control the other

-connected components with the supplied remote controller.

The remote controller buttons operate in the same way as the buttons on each component

with the same indication.

For actual operations, please refer to the Instruction Manual for each component.

CLOCK

SLEEP

EFFECT

GRAPHIC EQ

MODE

10/0

--/---

VOLUME

PRESET

PLAY MODE

REPEAT

CLEAR

SCROLL

MEMORY

REPEAT

CLEAR

DISC

REPEAT

CLEAR

ACOUSTIC

PRESENCE

TONE

RANDOM

TIMER

UP/DOWN

ENTER

MUTING

INPUT

TUNER

M D

DVD

C D

CDR

TAPE

REC

PAUSE/STEP

STANDBY/ ON

REMOTE CONTROLLER

RC-

456S

CLOCK button

Press this button to

display the current

time.

SLEEP button

Enables you to

make the Sleep

time setting.

INPUT button

Enables you to

select a listening

source.

MUTING button

Mutes the sound

temporarily .

VOLUME

but-

tons

Enables you to

increase or decrease

the volume level.

ACOUSTIC PRES-

ENCE button

Switches acoustic

presence of f and

types.

Number buttons

Used to set the

time/day and select

the PRESET stations.

STANDBY/ON button

Toggles between STANDBY and

ON.

Tuner control

PRESET

: Tuner preset select

buttons

FM : FM band select button

AM : AM band select button

Enables you to set the tone.

TIMER:

Pressing this button

repeatedly to select one of the

following eight settings.

WEEKDAY: Timer playback on

the specified day(s) of the week.

WEEKEND:Timer playback on

the specied day(s) of the week.

REC:Timer record setting

DAYSET:Sets the day of the

week (WEEKDAY & WEEKEND).

ADJUST:Sets the current time

and the day of the week.

24H/12H: Enables you to select

24-hour display or 12-hour dis-

play by pressing the ENTER but-

ton and using the UP

/DOWN

buttons.

/DOWN

: Enables you to

select a parameter after you

press the TIMER or TONE but-

ton. Press the ENTER button to

confirm the selection.

ENTER:Press this button to con-

firm the selection made via the

TIMER, TONE, UP

, or

DOWN

button.

Use the following buttons to control components that are connected to the

- system.

CLOCK

SLEEP

EFFECT

GRAPHIC EQ

MODE

10/0

--/---

VOLUME

PRESET

PLAY MODE

REPEAT

CLEAR

SCROLL

MEMORY

REPEAT

CLEAR

DISC

REPEAT

CLEAR

ACOUSTIC

PRESENCE

TONE

RANDOM

TIMER

UP/DOWN

ENTER

MUTING

INPUT

TUNER

M D

DVD

C D

CDR

TAPE

REC

PAUSE/STEP

STANDBY/ ON

REMOTE CONTROLLER

RC-

456S

Graphic equalizer con-

tr ol

EFFECT: Ef fect select button

MODE: Mode select button

MD recorder control

REPEAT : Repeat mode

button

SCROLL : Scroll button

: Stop button

: Pause button

: Play button

PLAY MODE:Play mode

selection button

CLEAR:Clear button

REC:Recording button

: Track down button

: Track up button

CD recorder contr ol

REPEAT : Repeat mode

button

PLAY MODE : Play mode

selection button

: Stop button

: Pause button

: Play button

CLEAR:Clear button

REC:Recording button

: Track down button

: Track up button

CD player (or changer) /

MD r ecorder /

CD recorder control

1~9, 10/0 : Number buttons

--/---

: Ten's hold button

Stereo cassette tape

deck control

: Reverse play button

: Stop button

: Play button

: Rewind button

: Fast-forward button

DVD player control

: Chapter/track down

button

: Chapter/track up

button

: Stop button

PAUSE/STEP : Pause/Step

forward button

: Play button

CD player (or changer)

control

REPEAT : Repeat mode button

RANDOM :Random play

button

: Stop button

: Pause button

: Play button

MEMORY:Memory button

CLEAR : Clear button

DISC : Disc button for CD

changer

: Track down button

: Track up button

REMOTE CONTROLLER

R-805TX

Mode Select buttons

TONE button