ONKYO HT-R8230 Service Manual

Cover page of ONKYO HT-R8230 Service Manual

Service Manual for ONKYO HT-R8230, downloadable as a PDF file.

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HT-R8230
SERVICE MANUAL
SERVICE MANUAL
AV RECEIVER
Silver model
MODEL
HT-R8230
Ref. No. 3817
082004
SMDD
120V AC, 60Hz
RC-479S
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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HT-R8230
SERVICE MANUAL
SERVICE MANUAL
AV RECEIVER
Silver model
MODEL
HT-R8230
Ref. No. 3817
082004
SMDD
120V AC, 60Hz
RC-479S
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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SERVICE PROCEDURES
HT-R8230
1. Replacing the fuses
2. Safety-check out
(Only U.S.A. model)
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 terminal GND on the back panel.
Specifications: More than 10Mohm at 500V
This symbol located near the fuse indicates that the
fuse used is show 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 utilise est e lent.
Pour une protection permanente, n'utiliser que des fusibles de meme
type. Ce demier est indique la qu le present symbol est apposre.
3. To initialize the unit
This unit does not require memory preservation batteries.
A built-in memory power backup system preserves the contents of
memory during power failures and even when the power cord is unplugged.
The power cord must be plugged in order to charge the backup system.
The memory preservation period after the unit has been turned off varies
depending on climate and placement of the unit. On average, memory
contents are protected over a period of a few weeks after the time the unit
has been turned off.
This period is shorter when the unit is exposed to a very humid climate.
This device employs a microprocessor to perform various
functions and operations. If interference generated by an external
power supply, radio wave, or other electrical sauce 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 the hold down the VIDEO 1 button , then press the
STANDBY/ON button when the unit is Power ON.
2. After " Clear " is displayed, the preset memory and each mode
stored in the memory, are initialized and will return to the
factory settings.
5. Memory Preservation
Main microprocessor Q7008.
1. Press and the hold down the DISPLAY button , then press the
STANDBY/ON button when the unit is Power ON.
Version is displayed on FL display only for 3 seconds.
2. Press the STANDBY/ON button to Power Off.
4. How to check version of microprocessor?
Version 04212a
ex.
REF. NO.
F6901
F6901 or
F6902
F6902 or
F901
F901 or
F903
F903 or
DESCRIPTION
8A-UL
8A-T/UL-ST2
8A-UL
8A-T/UL-ST2
8A-UL
8A-T/UL-ST2
5A-UL/T-237
5A-T/UL-ST2
PART NO.
252198
252261
252198
252261
252198
252261
252164
252258
REMARKS
!
!
!
!
!
!
!
!
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HT-R8230
EXPLODED VIEWS-1
HT-R8230
U04
U03
P7502
P7503
U02
F903
F6902
F6901
U18
U19
U01
U10
U25
U09
U27
P101
U23
U08
P901
U12
T901
U11
U20
U17
P800
x 8
A028
A035
A020
x 6
A050
A051
x 6
A030
A021
A007
x 3
A005
x 10
A411
A004
A021
A021
x 2
A036
x 2
A025
A024
A404
x 24
A401
A026
A055
x 4
A010
A002
x 2
A421
x 3
A065
A413
A412
A414
A060
A420
A410
A056
x 8
A057
x 4
A017
x 2
A017
A016
x 2
A015
A023
x 4
A435
F901
Refer to
<Fig-1> in
EXPLODED
VIEWS-2
Refer to
<Fig-2> in
EXPLODED VIEWS-2
U26
A022
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HT-R8230
EXPLODED VIEWS-2
HT-R8230
Q6064
Q6063
Q6062
Q6061
Q6060
Q6050
Q6051
Q6052
Q6054
Q6053
Q6050A
x10
A037
x10
A416
(L=85mm)
A417
(L=160mm)
<Fig-2>
<Fig-1>
FRONT PANEL INSIDE VIEW
A416
(L=85mm)
A415
(L=135mm)
A418
(L=215mm)
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BLOCK DIAGRAM
HT-R8230
HT-R8230
SUBWOOFER
PREOUT
AC OUTLET
BASS
BOOST
MUTING
MUTING
OUTPUT GAIN
0-18dB
OUTPUT GAIN
0-18dB
OUTPUT GAIN
0-18dB
OUTPUT GAIN
0-18dB
OUTPUT GAIN
0-18dB
OUTPUT GAIN
0-18dB
INPUT GAIN
0/6dB
INPUT GAIN
0/6dB
INPUT GAIN
0/6dB
INPUT GAIN
0/6dB
INPUT GAIN
0/6dB
INPUT GAIN
Q301 BD3811K
0/6dB
Q302(1/2)
10.5dB
Q302(2/2)
Q305
15dB
NC
NC
VIDEO 3
CD
L
R
L
R
L
R
L
R
L
R
L
R
L
R
L
R
L
R
CENTER
SUB WOOFER
TAPE IN
TAPE OUT
VIDEO 1 OUT
VIDEO 1 IN
VIDEO 2 IN
FRONT
SURROUND
DVD
BACK
UP
Q7501
OPERATION KEY
16BT123GK
FL TUBE
STANDBY
D7507
RL6901
INPUT
ATT.
-6dB
MASTER VOLUME
0,,-103dB
50KLPF
SW
50KLPF
C
50KLPF
SR
50KLPF
SL
50KLPF
R
50KLPF
L
SEC2
DIR
2CH A/D
96/24
VIDEO SELECTOR
MAIN
MICROPROCESSOR
Q7008
MPD784225GC-249-8BT
SUB
MICROPROCESSOR
Q7502
MPD780232GC-030-8BT
Q701
CS493264
DSP
96/24
6CH D/A
Q801
AK4586
Q804
Q803
Q802
OPTICAL
BASS/TREBLE
BASS/TREBLE
AC IN
F901
P902
RL901
D921
-924
D9502
-9504
D6904
D6903
RL6902
POWER
AMP.
D9509
-9512
PRI.
SEC1
T902
U7501
REMOTE SENSOR
SEC3
+B1L
+B1H
PHONES
VIDEO
VIDEO2 IN
VIDEO1 IN
DVD IN
12.5MHZ
5MHZ
12.288MHZ
VIDEO
MUTE
Q202
Q201
MONITOR OUT
VIDEO 1 OUT
SEC1H/L
CONTROL
Q4606
78M05
+5VDSP
Q6402
78M12
Q6403
79M12
-12VAF
-12VAF
VIDEO SECTION
PREAMPLIFIER
SECTION
DSP SECTION
-VP
+12V
Q9501
FL TUBE
FLAC
FLAC
RELAY
+B2
SEC1H
+B1
-B1
Q6931
NJM78M56A
Q6405
78M12
+5.6V
MICROPROCESSOR
SUB MICROPROCESSOR
POWER
OSC
+5V
-12VAF
+12VAF
+7V
-7V
+2.5V
DSP
POWER SUPPLY
VOLTAGE
LEVEL SENSOR
R6380
THERMAL
SENSOR
VOLH
PRO
D6704
DC VOLTAGE
DETECTION
OVER CURRENT
DETECTION
Q6701~6703
COAXIAL
Q281
74HCU04
VIDEO3 IN
+27dB
+27dB
+27dB
+27dB
+27dB
POWER
AMPLIFIER
L
R
FRONT
SPEAKERS-A
FRONT
SPEAKERS-B
SURROUND
SPEAKERS
CENTER
SPEAKER
L
R
L
R
+3.3V
78
77
2
69
68
1
55
72
66
65
71
57
4
3
43
42
38
6
5
40
39
8
37
7
30
31
76
35
75
33
34
10
36
SWPO
9
23
21
26
25
28
27
24
22
12
18
11
AMUT
14
20
13
16
15
17
19
SPF
SPCS
SPB
HPDET
SELMUT
SELDA
SELCL
RST.CS.INTREQ/CL/DA
/SCDO
RST.CS/CL/DA/
CDTO/INT1.2.
CTLA/B
VMUT2
VMUT1
DIGITAL IN
Q7004
BA33C25
Q321
78L07
Q322
79L07
Q307
MUTING
Q312
Q313
Q306
Q308
D6703
RL6603
RL6601
RL6604
RL6600
Q203
LA7956
SUB
TRANSFORMER
T901
MAIN
TRANSFORMER
TUNER UNIT
MAIN MICROPROCESSOR
RI
RI
INTERFACE
120V 60Hz
SELECTOR/TONE CONTROL
/VOLUME
A
1
2
3
4
5
B
C
DE
FG
H

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