Onkyo HT-R640 Service Manual

HT-R640
SERVICE PROCEDURE
1. Replacing the fuses
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.
2. To initialize the unit
The AV receiver uses a battery-less memory backup system in order to retain radio presets and other settings
when it's unplugged or in the case of a power failure.
Although no batteries are required, the AV receiver must be plugged into an AC outlet in order to charge the
backup system. Once it has been charged, the AV receiver will retain the settings for several weeks,
although this depends on the environment and will be shorter in humid climates.
1. Press and hold down the VIDEO 1/VCR 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.
4. Memory Backup
Main microprocessor Q701 only.
1. Press and hold down the DISPLAY button , then press the STANDBY/ON button when the unit is Power on.
The version is displayed on FL display for 3 seconds.
2. Press the STANDBY/ON button to Power off.
3. To check the version of microprocessor
Main1.01/05305A
Ex.
REF NO.
PART NAME
DESCRIPTION
PART NO.
REMARKS
F
9
01
F
USE
1
0
A-
U
L
/
T-2
33
2
5
2330G
R
!
,
<DD
>
F
9
01 o
r
F
USE
1
0
A-T
/U
L-
S
T
2
2
5
2
333GR
!
,
<DD
>
F
9
01 o
r
F
USE
5
A-
S
E-TL2
50V
2
5
227
8GR
!
,
<PP
>
F
910
F
USE
5
A-
U
L
/
T-2
33
2
5
2
3
2
6GR
!
F
910
o
r
F
USE
5
A-T
/U
L-
S
T
2
2
5
22
58GR
!
F6
9
01
F
USE
12A-T
U
L-2
50V
2
5
2
30
1
GR
!
F6902
FUSE
12A-TUL-250V
252301GR
!
<Notes>
<PP>
: HT-R640 European model
<DD> : HT-R640 USA model
F
9
01
F
USE
5
A-
S
E-EA
K
2
5
2
0
7
8GR
!
,
<PP
>
F
9
0
3
F
USE
2.
5
A-
S
E-EA
K
2
5
2
0
7
5GR
!
,
<PP
>
F
9
03
F
USE
5
A-
U
L
/
T-2
33
2
5
2
3
2
6GR
!
,
<DD
>
F
9
03 o
r
F
USE
2.
5
A-
S
E-TL2
50V
2
5
227
5GR
!
,
<PP
>
F
9
03 o
r
F
USE
5
A-T
/U
L-
S
T
2
2
5
22
58GR
!
,
<DD
>
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

Onkyo HT-R640 Specifications

General

Brand	Onkyo
Model	HT-R640
Category	Receiver
Language	English