Onkyo DX-7310 User manual

DX-7310
Ref. No. OM3507
ONKYO.
SERVICE
MANUAL
COMPACT DISC PLAYER
MODEL DX-7310
Biack model
230V AC, 50Hz
120/220V AC, 50/60Hz
SAFETY-RELATED
COMPONENT
WARNING!!
SPECIFICATIONS
COMPONENTS
IDENTIFIED
BY
MARK
A
ON
THE
Compact
Disc
Player
Model
DX-7310
SCHEMATIC
DIAGRAM
AND
IN
THE
PARTS
LIST
ARE
Signal
readout
system:
Optical
non-contact
CRITICAL
FOR
RISK
OF
FIRE
AND
ELECTRIC
SHOCK.
Reading
rotation:
About
500
-
200
r.p.m.
REPLACE
THESE
COMPONENTS
WITH
ONKYO
PARTS
.
(constant
linear
velocity)
WHOSE
PARTS
NUMBERS
APPEAR
AS
SHOWN
IN
THIS
pe
EE
bem
Leh
mis
|
F
MANUAL
Error
correction
system:
Cross
Interleave
Reed-Solomon
code
D/A
converter:
1
bit
PWM
ACCUPULSE
DA
CONVERTER
MAKE
LEAKAGE-CURRENT
OR
RESISTANCE
MEA-
Sampling
frequency:
352.8
kHz
(Eight-times
SUREMENTS
TO
DETERMINE
THAT
EXPOSED
PARTS
oversampling)
ARE
ACCEPTABLY
INSULATED
FROM
THE
SUPPLY
Number
of
channels:
2
(stereo)
CIRCUIT
BEFORE
RETURNING
THE
APPLIANCE
TO
Frequency
response:
5
Hz
-
20
kHz
THE
CUSTOMER.
Total
harmonic
distortion:
0.004
%
(at
1
kHz)
Dynamic
range:
96
dB
Signal
to
noise
ratio:
100
dB
Channel
separation:
90
dB
(at
1
kHz)
Wow
and
Flutter:
Below
threshold
of
measurabi
hity
Output
level:
2
volts
r.m.s.
Headphone
jack:
I
Optimum
load
impedance
8
to
200
ohms
Power
consumption:
13
watts
Power
supply
rating:
European
and
Australian
mdels:
AC
230
V,
50
Hz
USA
and
Canadian
models:
AC
120
V,
60
Hz
Worldwide
model:
AC 120 V and AC 220\
switchable, 50/60 Hz
Dimensions (W x H x D): 455 x 120 x 308 mm
(17-15/16" x 4-3/4" x 12-1/"" )
Weight: 4.8 kg, 10.6 lbs.
ONKYO
AUDIO COMPONENTS
_1— Specifications and external appearance are subject to chgige
without notice because of product improvements.

: By Cr acu e
TABLE OF CONTENTS
Specifications - I
Service procedures - 2
Caution on replacement of optical pickup 2
Protection of eyes from laser beem during servicing: 3
Laser warming labels - 3
Exploded view - 4
Parts list: - 5
Mechanism exploded view : 6
Drive unit exploded view: ° q
Parts list . . ° eo. * . 7
Microprocessor connection diagram ° 8
Microprocessor terminal description - 9
IC block diagram and description: - + * * * :°10~ 13
Dissembling procedure ae ee ee 14
Schematic diagram mechanism block 15
Block diagram - - 16
Adjustment procedure -17,18
Printed circuit board view frm bottom side - > 19,20
Schematic diagram ° 21.22
Printed circuit board parts list - 23,24
e ° * ° 25
Packing view °
SERVICE PROCEDURES
1. Safety-check out
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 chassis.
Specifications:More than 10Mohm at 500V.
2. Voltage Selector (Back panel)
Worldwide models are equipped with a voltage selector
to conform with local power supplies.Be sure to set
this switch to match the voltage of the power supply
in user's area before turning the power switch on.
Voltage is changed by sliding the groove in the switch
with a screw driver to the right or left.
Confirm that the switch has been moved all the way to
the right or left before turning the power switch on.
220V ~ 120V ~ 220V ~ 120V ~
at AC120V at AC220V
CAUTION ON REPLACEMENT OF OPTICAL PICKUP
The laser diode in the optical pickup block is so During repair,carefulley take the following precautions.
sensitive to static électricity,surge current andetc, (The following precautions are included in the service
that the components are liable to be broken down parts.)
or its reliability remarkably deteriorated.
PRECAUTIONS
1.Ground for the work-desk. 3.Grounding for the human body.
Place a conductive sheet such as a sheet of copper Be sure to put on a wrist-strap for grounding whose
(with inpedance lower than 1OM1Q.) on the work- other end 1s grounded.
desk and place the set on the conductive sheet so Be particularly careful when the workers wear
that the chassis. _ synthetic fiber clothes, or air is dry.
2.Grounding for the test equipment and tools. 4.Select a soldering iron that permits no leakage and
Test equipments and toolings should be grounded have the tp of the iron well-grounded.
in order that their ground level is the same the 5.Do not check the laser diode terminals with the
ground of the power source. probe of a circuit tester or oscilloscope.

DX-7310
PROTECTION
OF
EYES
FROM
LASER
BEAM
DURING
SERVICING
This set employs a laser. Therefore, be sure to follow
carefully the instructions below when servicing.
WARNING!!
WHEN SERVICING, DO NOT APPROACH THE LASER
EXIT WITH THE EYE TOO CLOSELY. IN CASE IT IS
NECESSARY TO CONFIRM LASER BEAM EMMISION,
BE SURE TO OBSERVE FROM A DISTANCE OF MORE
THAN 30cm FROM THE SURFACE OF THE OBJECTIVE
LENS ON THE OPTICAL PICK-UP BLOCK.
LASER WARNING LABEL
These labels are located on the mechanism.
fi GER NVISIBLE LASER RADIATION
AND INTERLOCK FAILED OR
ae DIRECT EXPOSURE 10 BEAM.
esata AZARDOUS LASER AND
MROMAGNETIC IC RADIATION WHEN OPEN
SO INTERLOCK DEFEATED.
te aller NEMENT LASER
MERT AVEC L’ECLENCHEMENT DE SECURITE
“CLASS 1 LASER
PRODUCT”
Laser Diode Properties
Material: GaAlAs
Wavelength: 760~800nm
Emission Duration: continuous
Laser output: max. 0.5mW*
*This output is the value measured at a distance
about 1.8mm from the objective lens surface
on the Optical Pick-up Block.
VARO!
AVATTAESSA JA SUOJALUKITUS OHITETTAESSA
OLET ALTTINA NAKYMATTOMALLE
LASERSATEILYLLE. ALA KATSO SATEESEEN.
ADVARSEL
USYNLIG LASERSTRALING NAR DEKSEL
APNES OG SIKKERHEDSLAS BRYTES.
seein

DX-7310
ae 7 '°
Th
NN
Yin
_Z_\
=
yt
- OY
EXPLODED VIEW

PARTS LIST
REF NO.
1
2
4
5
11
14
15
16
17
18
19
20
31
35
41
42
43
45
48
49
51
54
57
38
82
PART NO.
27110776AY
28191662Y
27100227DY
27122031Y
27122132Y
27122101Y
27190928A Y
27300750
82143006
838130088
831130088
833430080
831430100
830440109
834430108
28184479AY
838430088
27211689Y
28135199Y
8910301
28125248-6Y
28125249-6Y
28324845BY
28324140Y
28148304
27175292Y
838130088
833430080
2047221012Y
DESCRIPTION
Front bracket ass'y
Clear plate
Chasis
Rear panel<P>
Rear panel<W>
Rear panel<T>
Holder M
A, Bushing
3P+6FN(BC)Pan head screw
3TTW+8B Self-tapping screw
3TTW+8B Self-tapping screw
3TTP+8P(BC) Self-tapping screw
3TTW+10P(BC) Self-tapping screw
4TTC+10P(BC) Self-tapping screw
3TTS+10B(BC) Self-tapping screw
Top cover
3TTB+8B(BC) Self-tapping screw
Front Panel
BADGE
Ring CS
End cap L
End cap R
Knob, level
Knob,power
Door
Leg
3TTB+8B Self-tapping screw
3TTP+8B(BC) Self-tapping screw
Flat Cable
REF NO. PART NO.
L901 230915
P901 293175 Y
T901 2300988B Y
2300990B Y
Ul 1H260522-1Y
U2 1H260523-1Y
U3 1H260524-1Y
U4 1H260525-1Y
US 1H260526-1Y
U6 1H260527-1Y
1H260522-1AY
U7 1H260528-1Y
Z1 24800009C
<P>:230V model only
<W>:World wide model only
<T>:Taiwanese model only
DESCRIPTION
A\ RBD25HA-00,Core
A\ AS-CEE, AC CORD
A\ NPT-1199P, Power Transformer<P>
A NPT-1199DG, Power Transformer, <W>
NAAR-5222-1,Main circuit PC board ass'y
NADIS-5223-1,Display circuit PC board ass'y
NAAF-5224-1,Headphone amplifier PC board ass'y
NAAF-5225-1,Headphone terminal PC board ass'y
NAPS-5226-1,Power switch PC board ass'y
NAPS-5227-1,Power transformer PC board ass'y<P>
NAPS-5227-1A,Power transformer PC board ass'y, <W>
NASW-5228-1, Voltage selector switch PC board ass'y, <W>
NCD-130S,CD Mechanism ass'y
: THE COMPONENTS IDENTIFIED BY MARK A\,
ARE CRITICAL FOR RISK OF FIRE AND
ELECTRIC SHOCK. REPLACE ONLY WITH
PART NUMBER SPECIFIED.

-DX-7310
MECHANISM-EXPLODED VIEW
PARTS LIST
PART NO.
REF.NO.
~ Oo OPI auUsb WN
| NO ce ee ed
ouwunmnrn UU bf WwW WN
24840060
24822014
248 10020
24840061
24830003
24832004
24836013
248 10024
24802012
24820023
24840062
24840075
24802013
248 10021
24840063
DESCRIPTION
Tray
Stopper
Gear cover
Tray gear
Chucking plate
2.6TTW+7B,Sclf-tapping screw
Chucking yoke
Magnet
Damper
Chucking P
Sub chassis
Spring
Screw with washer
KSM-2401,Pickup drive unit
CD servo pc board ass'y
Main chassis
2.6TTW-+16B,Self-tapping screw
Drive gear
Control cam
REF.NO. PART NO.
21
22
23
24
25
26
27
28
101
102
103
104
105
106
107
108
109
110
il4
24840064
25055369
24840066
24840067
24810022
248 10025
24816008
24828006
24836014
24840068
24822015
24820024
24824003
24110011
248 10023
24802014
24804012
82112003
DESCRIPTION
Leafswitch
NPLG-5P352,Plug
Loading motor pce board
Loading motor
Middle gear
Loading
Belt
2.6B+2.5F Screw
Sled shaft
Insulator
2X 5,Special screw
Plate S
Spring
Center ring
KSS-240A,Optical pickup
Wheel
Chassis
Motor gear ass'y
2P+3FN,Pan head screw

DRIVE UNIT
10]
REMOVEMENT OF TRAY ASS’Y
Remove the top cover.
Turn the locked screw to the clockwise to release the lock of gear.(Refer fig. 1)
Pull out the tray ass'y.
Remove the stopper.(Refer fig.2)
Press the tray stopper to the arrow mark direction and remove the tray ass'y.
Stopper
Front Panel
ala
Tray
Tray
stopper
Clear Plate stopper | J |
4 =
=F Tray
Chassis

DX-7310
MICROPROCESSOR
CONNECTION
DIAGRAM
CXP50116-527 (Microprocessor)
™
=4 rw
i} 2%
io) —
£ xs
B 8O 9
a |
w|ul>|si>l2
Xly| >|] Slo] El] Ble Lolols| mia
3/3171 +] Ot+] x] ppafarafafafa
T
i
Q702
REMOTE CONTROL
SENSOR
BUFFER
5 RI
IN/OUT
8-BT-l25GK
FL TUBE
Leet |
&
>|
f>i>
=
SEARCH
3] |e ele gaa]
DISP REP EDIT
ok ook ot
2 0 OPCL PSE STP PLY yp
ok ook Ook oof of
DWN MEM
ADI 4,
FR CLR SHT FF wneExT
— okt 2b ok: ee ak

DX-7310
Symbol Description
ee) DFTSW Connect to pickup block.
2~4 Al~A3 Not used.(Open
FL tube segment output.
FL tube grid output.
Synchronizing signal detection of sub code frame.
Not used.(Open
20
21~28
9
1G~ 8G
SCOR
>
T Reset input terminal. Reset at the low level.
Wr 1h
+ |+ [x |+
35~41 ADO~AD6 AD input terminal. Connect to the operation key.
W 1) [KO [OO 1) [ho oa)
Chip enable terminal.
eo
Q
Zz oO
|
DATA Serial data output of command to signal processor IC.
Serial data input of sub code Q from signal processor IC.
SQCK Serial transfer clock of sub code Q to signal processor IC.
K Serial transfer clock of command to signal processor IC.
Serial transfer latch to signal processor IC.
Muting ON/OFF control output terminal. ON at the high level.
Tray open/close control output.
U
OPEN
CLOSE
ff
Mm iA [AH TNH
os
Tray open/close control output.
Not used.(Open
Not used.(Open |
Sense input from signal processor.
+
ENS
O
INSW
OUTSW Tray open operation completion signal.
MD
NRSCO
NRSCI
Focus OK input.
AW
Tray close operation completion signal.
Inhibiting signal of di ut of signal processor.
NRSC output.
NRSC input.
Remote control signal input terminal.
Gi
63~70 DO~ D7 Not used.(Open
Ground terminal.
XTAL | System clock output terminal.
+
C4M
+
< B
in
LA
ae
S$ |< |x |<
Lo
System clock input terminal.
ms
Ne ee ee ee ON tr fin [ny
oO ~ S) nN © joo [a
nN
Negative power supply terminal for FL tube.
Optical pickup control output terminal. ON at the low level.
Not used.(Open
Not used.(Open
Not used.(Open)
ora)
=
1)
y°)
i
|
Ke)
|

. DX-7310
CXD2500BQ (Digital Signal Processor)
o
UO
a.
>
©)
REGISTER
SYNC.
PROTECTOR
—~10—
PRIORITY
ENCODER
AUTO
SEQUENCER
PROCESSOR
yDAO!~i6
9 MUTE