ONKYO TX-8222 Service Manual

Cover page of ONKYO TX-8222 Service Manual

Service Manual for ONKYO TX-8222, downloadable as a PDF file.

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TX-8222
SERVICE MANUAL
SERVICE MANUAL
STEREO RECEIVER
Black and Silver models
MODEL
TX-8222
Ref. No. 3945
062006
120V AC, 60Hz
230-240V AC, 50Hz
BMDD,BMDC
BMPP,SMPP,BMPA
RC-666S
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.
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TX-8222
SERVICE MANUAL
SERVICE MANUAL
STEREO RECEIVER
Black and Silver models
MODEL
TX-8222
Ref. No. 3945
062006
120V AC, 60Hz
230-240V AC, 50Hz
BMDD,BMDC
BMPP,SMPP,BMPA
RC-666S
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.
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TX-8222
SPECIFICATIONS
Amplifier Section
Tuner Section
FM
AM
General
Audio Inputs
Audio Outputs
Specifications and features are subject to change without
notice.
Rated Output Power (FTC) (North American)
All channels:
50 watts minimum continuous power
per channel, 8 ohm loads, 2 channels
driven from 20 Hz to 20 kHz, with a
maximum total harmonic distortion of
0.08 %
Rated Output Power (IEC) (European and Australian)
2 ch
70W at 4 ohms, 1 kHz, 2 ch driven
Maximum Output Power (JEITA) (Asian)
90 W at 4 ohms, 1 kHz, 2 ch driven
Dynamic Power
North American:
135W + 135W (2
)
105W + 105W (4
)
70 W + 70W (8
)
European and Australian:
110W + 110W (2
)
90 W + 90W (4
)
55 W + 55W (8
)
THD (Total Harmonic
Distortion)
0.08 % (Power Rated)/ 0.08 % (1 kHz,
1 W)
Damping Factor
60 (Front, 1 kHz, 8 )
Input Sensitivity and
Impedance
150 mV/ 50 k (LINE)
2.5 mV/ 50 k (PHONO MM)
Output Lev el and
Impedance
150 mV/ 2.2 k (REC OUT)
Frequency Response 10 Hz~100 kHz/ +1 dB~ 3 dB (CD)
Tone Control
±10 dB, 100 Hz (BASS)
±10 dB, 10 kHz (TREBLE)
Signal to Noise Ratio 100 dB (LINE, IHF-A)
80 dB (PHONO, IHF-A)
Speaker Impedance
4
16
Tuning Frequency
Range
NorthAmerican: 87.5 MHz~107.9 MHz
Others: 87.5 MHz~ 108.0 MHz
Usable Sensiti vity
Stereo: 22.2 dBf (75
IHF)
Mono: 15.2 dBf (75
IHF)
Signal to Noise Ratio Stereo: 67 dB (IHF-A)
Mono: 73 dB (IHF-A)
THD
Stereo: 0.5 % (1 kHz)
Mono: 0.3 % (1 kHz)
Frequency Response 30 Hz~ 15 kHz / ±1 dB
Stereo Separation
40 dB (1 kHz)
Tuning Frequenc y
Range
NorthAmerican: 530 kHz~1710 kHz
Others: 522 kHz~ 1611 kHz
Usable Sensitivity
300 µV
Signal to Noise Ratio 40 dB
THD
0.7 %
Power Supply
NorthAmerican: AC 120V, 60 Hz
European: AC 230-240V, 50 Hz
Others: AC 230-240V, 50Hz
Power Consumption
NorthAmerican: 2.1A
European: 180W
Others: 180W
Standby Power
Consumption
North American:0.2W
Others: 0.3W
Dimensions
(W
H
D)
435
150
332 mm
17-1/8"
5-7/8"
13-11/16"
Weight
7.5 kg
16.5 lbs.
Analog Inputs
PHONO, CD,TAPE 1,TAPE 2, LINE 1,
LINE 2
Analog Outputs
TAPE 1,TAPE 2
Speak er Outputs
SPEAKERS A
SPEAKERS B
Phones
1
IR Input/Output
1/1
+
~
+
+
+
+
+
+
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2. To initialize the unit
The TX-8222 contain a micro processor for signal processing
and control functions. In very rare situations, severe interference,
noise from an external source, or static electricity may cause it to lockup.
In the unlikely event that this happens, unplug the power cord from the
wall outlet, wait at least Þve seconds, and then plug it back in again.
3. Safety-check out
(U.S.A. model only)
After correcting the original service problem, perform the
following safety check before releasing the set to the customer.
Leakage Current Check
Measure leakage current to a known earth ground(water pipe,
conduit, etc.) by connecting a leakage current tester between
the earth ground and exposed metal parts of the appliance
(input/output terminals, screwheads,metal overlays, etc.).
Plug the power supply cord directly into a 120V AC 60 Hz outlet
and turn Standby switch on. Any current meausred must not
exceed 0.5mA.
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.
4.
CIRCUIT NO. PART NO.
DESCRIPTION
Note: <D>:North American model only
<P>: European model only
<A>: Australian model only
To reset the TX-8222 to its f actor y defaults, turn it on and,
while holding down the VIDEO button, press the
ST ANDBY/ON button. When the reset is complete,
"Clear" appears on the display and the TX-8222 enter
Standby mode.
Memory backup
The TX-8222 use a batter y-less memory backup sys-
tem (C704) in order to retain r adio presets and other settings
when it's unplugged or in the case of a po wer failure.
Although no batteries are required, it must be plugged
into an AC outlet in order to charge the backup system.
Once it has been charged, the TX-8222 will retain the
settings for several weeks, although this depends on
the environment and will be shorter in humid climates.
F901
252326GR or
5A-UL/T-233 or
252258GR
5A-T/UL-ST2 <D>
F902
252075GR or
2.5A-SE-EAK or
252275GR
2.5A-SE-TL250V <P/A>
F903
252326GR or
5A-UL/T-233 or
252258GR
5A-T/UL-ST2 <D>
252075GR or
2.5A-SE-EAK or
252275GR
2.5A-SE-TL250V <P/A>
TX-8222
SERVICE PROCEDURES
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TX-8222
EXPLODED VIEW
TX-8222
A212
x 3 pcs.
A003
x 5 pcs.
A003
x 2 pcs.
A003
x 10 pcs.
A203
x 2 pcs.
A009
x 2 pcs.
A811
x 2 pcs.
A003
x 2 pcs.
A003
x 2 pcs.
A008
x 4 pcs.
E801
x 4 pcs.
A003
x 2 pcs.
A220
x 2 pcs.
A301
x 21 pcs.
A003
x 3 pcs.
A003
x 3 pcs.
A018
x 5 pcs.
A003
x 2 pcs.
A003
x 2 pcs.
A202
x 6 pcs.
Q521A
x 4 pcs.
A011
x 3 pcs.
A205
x 4 pcs.
A003
x 4 pcs.
A206
x 4 pcs.
A351
x 3 pcs.
A210
A350
A001
A607
A201
A002
P715
P704
P901
U023
U017
U012
U022
T901
U016
U015
U026
U05
U01
U02
U014
U013
A006
F901
D911
Q521
Q524
Q522
Q523
F903
A010
A014
A003
A003
A003
A302
A300
A023
A005
E801
A007
A352
A214
A355
F913
F914
F902
A028
P501B
A219
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TX-8222
BLOCK DIAGRAM
UP
DOWN
STB
DATA
CL
TUNL
FLAC2
FLAC1
-VP
MUT
REMIN
FLDRST
FLDCS
FLDCLK
FLDSDO
TMUT
PLLCLK
PLLSDO
STEREO
SD
RDSCLK
RDSDAT
POW
+5.6V
+5V_MPU
+5V_CPU
+5V_CPU
+12V
-12V
TU-L
TU-R
RI
IRIN
IROUT
K0
K1
K2
KEYINT0
KETINT1
KEYINT2
K3
KEYINT3
LEDSTBY
+5.6V
VOLTAG
PHONO
EQUALIZER
Q301
PHONO
REC
PLAY
TAPE-1
CD
PLAY1
L1/
DVD
LINE1
DVD
TUNER
PLAY2
REC2
REC
PLAY
TAPE-2
LINE2
AUDIO
IN
/
OUT
MOTOR
DRIVE
Q481
DISPLAY / CONTROL
CPU
VOLUME
MICROPROCESSOR
Q701
FL DRIVER
Q7502
FL DISPLAY
Q7501
PACK
FM/AM TUNER
TACT KEYS
To
Audio
Selector
&
Phono
Q302
PHONO
CD
REC1
ANALOG
SWITCH
BASS
TREBLE
Q9
Q922
D921
R641
Q491
MUTING
R393
BALANCE
D920
REMOTE
CONTROL
SENSOR
RI
IRIN
IROUT
ST-BY
Q402
R409
Q401
R415
Q706
Q701
L2
A
1
2
3
4
5
BCD

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