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

6436MHz
terminal
pe pump output analog EFM PLL
SYMBOL | /O|DESCRIPTION,
FOK | 1 |FoucsOkinpt
FSW _| © |Ourput filter changeover output for spindle motor__| | _ 43
IMON | Spindle motor control output
MDP Spindle motor servo control
MDS
DAos
|
0
[paos
_—[MNTSoutpm
HwhenGFSisthehighlevel.————S—S—=d'
|
47
|Da03
|
0
JDAG3
—MNT2oupm
Fey
ee
eS
DAO?
|
0
|DAO2
_—[MNTiowpu
VvCOO
DAO}
|
O
[DAOL
__[MNTOoutput
A
0
|Controt
output
for
aperture
correction.
H
when
R
ch.
_
(8
Control
output
for
aperture
correction.
H
when
L
ch
ie
Crystal
osciltation
circuit
input
of
16.9344MHz
or
33.8688MHz
input
4
33
Z\< <
LA
< re °
LL charge pump output for variable pitch
Crystal
oscillation
circuit
output
of
16.9344MHz.
Crystal
selection
input
terminal.
L
when
16
9344MHz
H
when
33.8688MHz
CKI
.
lock input for variable pitch from VCO
| O|
ry
ry
| 0 |
=
0 |
ie scillation circuit input for analog EFM PLL.
ae
| 0 |
|
hae
+
5 *s mis [>
Vv
eae
16.934MHz
©
[2/3
divided
output
of
pins
$3and
54.
|
18
|Fmo
_—‘{
o|
Fihter
output
for
master
PLL.
S7__|C4M
To
14.2336
MHzoupt
[19
[emi
|__|
Fiver
input
for
master
PLL.
(ss
Iciom
|
0
[16.9344MHzoupa
20
[pco
_|
0
{Charge
pump
outputof
master
PLL
|
59
|
MD2
ra
Digital
ou
input.
On
at
high
level.
|
21
|Avss
|__|
Analog
ground
[60
[pout
|
0
[Digialomp
(2
lertv
[1
[veo
contol
voltage
input
for
master
-61_[EMPH
|
0
[Emphasis
control
ouput.
Active
high.
|
23
|AvDD
|_|
Analog
section
power
supply
(+5
7
62_[weck
|
0
|Write
frame clock
output
ee
ee
|
|
25
|piAS
|
1]
Asymmetry
circuit
constant
current
input
or
SI.
|
26
Jasyt
__|_1
|
Asymmetry
comparator
voltage
input
[64
_|SBSO
|
©
Serial
output
of
sub-code(P~W)
(27
_|asyo__|
0
[EFM
full
swingouput
Sd
|S
JEXCK
1
[Clock
input
forreadouSQSO.
[28
|ASYE
|
1
|Asymmemycontrolcircut.
St
oad
Sub
Q
80
bits,
PCM
peak,
and
level
data
16
bits
oe
ee
ee
ee
output,
Pee
ther
Audio
data
output
mode
changeover
input
|
67
~|sock
|
1
|
Clock
input
for
read
out
SQSO
Serial
data
at
Land
paraller
data
at
H.
(68
[MUTE
|
©
|Muting
contro!
output.
Active
HH.
31
[wock
[1
[D/A
imertace
for
48
bits
slot.
Word
clock
f=2Fs.
|
|
69
[SENS
|
[Sens
output.
Output
io
the
microprocessor
32
[LRCK
[1
JDVA
interface
for
48
bits
slot.
LR
clock
f=Fs.
|
|
70
_|xRST
|
1
|Sysiem
reset.
Reset
at
the
low
level,
33
[vpp
|
[Power
supply
terminal
(+Sv)
=|
{71
[DATA
|
1
|Serial
data
input
from
the
microprocessor.
3449]
Data
output
terminals
XLTA
es
Latch
input
from
the
microprocessor.
|
Cds
ssu=i_|pssico
Latch
the
serial
data
at
the
trailing.
|
34
[pais
_|
©
|DAI6
VDD
___|_|Power
supply
treminal
|
35
|pais___|
©
|pais
|
74
[CLOK
__|_1
Serial
data
transfer
clock
input
from
microprocessor
_|
|
36
|paAi4
|
O
|DA14
75
_|seIN
|
1
|SensinputfromSSP_
|
37
_|pai3__—|
o
|pai3
76
_lenct____|_1
[Track
jump
numbers
count
signal
input
|
38
|pai2__|
o
{paz
77
[DATO
_|_O
[Serial
dataoupu
SSP
|
39
[pan
|
o
[DAN
XLTO
|
0
|Serial
data
latch
output
to
SSP.
Latch
at
wailing,
|
|
40
{paio__|
©
[Dato
P79
[cLKo
|
0
[Serial
data
transfer
clock
ouiput
wo
SSP.
|
41
jpaoo
|
O
|DAO9__|XPLCK
output
[60
[MIRR
|
1
[Mirorsignal
input
Note:
SSP:
IC1OL
CXA1372Q
M51943ASL
(System
reset)
74HCUO4P
(Hex
inverters)
Vcc
Vcc
ee he

| DX-7310
CXA1372Q (Servo Signal Processor)
= 3
L=J
fa S2 8 & 3 ? 338
OOS =(s——(5) (2) ——n 5 aS a's
1
~,
4340
7”
vw
a
WOLVUTdHO? MOQNIA 408 $)) 2S4¥
x Gs)ec:
g es |
snr ip o- |
: el a ||
z a
: : <A TE |
ce a | (=) 7 33) FOK
2 g < Lae | mo( 2 EFM
=< 12 * LGN asy
- 5. | L$ | eA ees
~ as = @
+O 82 25
aa} * {8883 a7 Vv
Z>] 2 > 45
22) 19 fie ae
g ¢ 3 6
3 °
MBOL DESCIRPION
IPIN NO. [SYMBOL DESCIRPION
VO |
_I_|Mid-point
voltage
input
terminal.
|
__23|XLT___|_I_
{Latch
input
terminal
for
microprocessor.
_____
Connect
the
capacitor
between
FS3
and
this
pin
|
_24]DATA___|
I
|Serial
data
input
terminal
for
microprocessor.
_|
when
the
high
frequency
gain
focus
servo
is
dropped.
S
ignal output to count the track numbers.
ee i
d | O |
input
terminal.
according
command
from
the
microprocessor.
put
terminal
for
ow
frequency
boost
of
Mirror
comparator
output
terminal.
Defect
comparator
output
terminal.
focus servo
iii “” <4
Auto as ry control input terminal
EFM comparator output terminal.
<n
fied 3
| 0 | | I
| I Inversion input terminal of focus amplifier. | 32TEFM sf
SRCH
ee
Time
constant
terminal
to
make
the
focus
search
|
____33|FOK
|
O
[Focus
OK
comparator
outputterminal.
waveform. [~~ 341CC1____| _O [Defect bottom hold output terminal.
ia Tracking high frequency changeover input rT 351CC2 _|_I |Defect bortom hold input terminal from CCl.
terminal. —__37|CB _____|_1 |Defect bottom hold capacitor connection terminal. _|
TA
|
O
|
Tracking
drive
output
terminal.
[—__38(CP___|_I_|Mirror
hold
capacitor
connection
terminal.
___
TTA- | _L_ }inversion input terminal of tracking amplifier. [—_39[RF1___| 1 |RF summing amplifier inputterminal.
ISL+ | I ]No-inversion input terminal of sled amplifier. [____40|RFO___| O |RF summing amplifier ourputterminal.
_14]SLO | 0 |Sleddrive outputterminal. —SSS*«dYCt*~“‘*é‘ RITZ —=«C;*=ST:-: | Tracking zero-cross comparator input terminal. ___
| _—sASTSL- «T_T. [Inversion input terminal of sted amplifier. | 43\TE | 1 |Trackingerrorinputterminal
Bs nll =e Rs al ~~
focus tracking. when defect.
ee
|
focus
search,tarcking
jump,and
sied
kick
height
detection.
is decided. [_46/FZC___|_1 |Focos zero-cross comparator input terminal. __|
inner switch selection input terminal. | ATIFE
This terminal is used when tack jump.——__{ = 48/FDFCT. | 1 Capacitor connection terminal for tume constant
The sled runaway prevention circuit operates when defect.
at the low level
Serial data transfer clock input from
microprocessor.
Cc
‘o) ow
Ec
-~12—

SM5872CN (D/A Converter)
MCOM LRCI BCKI DI
_ MICROPROCESSOR
INTERFACE
A cals a
MLEN/DEEM
DE-EMPHASIS
ATTENATION
Ss (6) COUNTER
INPUT INTERFACE
&
INFINITY/ZERO
SELECTOR DETECTOR
FILETR PROCESSING
&
ATTENATION
PROCESSING
S| contro
CKSL
&
CONTROL
CKO
DVSS
(15)
XVSS
PWM DATA NOISE
DVDD (16) GENERATION SHARPER
BLOCK &
PROCESSING
XTO
XTI
AVDD1 (17)
LO AVSS1 LON AVDD2 AVDD3 RON AVSS2 RO
fi
(xTO
[OQ
|Resonatorsection
=|
28
XT
Tt
[Resomatorsection
SV
for
resonator
system
[2
|xvss__|
[Ground
forresonatorsystem
————SS*d|S27_:'[XVDD
|
_[5V
for
resonator
system
3
CKSL
||
|
26
|avDD4
|
5V
for
analog
section
[4
[cKO
|
©
[Outpurclock
of
resonator
section:
384fs_
|
25
(|RO
|
O
[Rch
PWM
output
(+)
5__|MUTEO__|
O
|Infinity
zero
detector
output
|
24
|avss2__|
[Ground
foranalog
section
6
(MUTED
|
1
|Mutingowpur
SSCS
28
[RON
_|_
©
[Rch
PWM
output
(-)
[7
[McoM
|
1
[interface
switchingcontrol
_—S=s——SSSS*|_
S22“
|AVDD3__|_|5V
for
analog
section
|
og
itrcl
|
|
Sampling
rate
clock
of
input
data:
H=L
ch,
L=R
ch
|
21
[avpp2.
|
5V
for
analog
section
BCKI
_|
1
[Bitclockofinpurdata
ss
SSCS—C~|—S20
«LON
__|
O
|Lch
PWMoowrpur
(+
AVSS1 = Ground for analog section
Pt
fESEL
{1
[Sampling
tequencyea.t
is
1g
[LO
«|
O|LchPWMoutpur()
[42
|FSEL2
|
1
|When
FSELI.FSEL2,
and
MCOML
are
the
low
level.|_17
|AVDDI_
|
_[SVforanalogsection
|
13
[DEEM
|
1|
De-emphasis
control
input
|
16
|IpDvpbp
|
|
5V
for
digital
section
|
14
[RSTN
|_|
System
reset:
L=Reset
|
15
|pvss
_|
_|Groundfordigital
section
ee bc ee
DISASSEMBLING PROCEDURES
1. Tray ass'y
Remove the top cover.
Remove the holder T and the retainer M.
Turn the power switch to ON.
Press the OPEN/CLOSE button to open the tray ass’y.
Remove the chucking ass'y.
Remove the stopper.
Press the tray stopper to the arrow mark direction and remove the tray ass'y.
Retainer M
Tray ass’y
Chucking ass’y
Stopper
Tray
stopper
Chassis
2. CD mechanism ass'y
Remove the tray ass'y.
Remove the four screws holding the mechanism and the holder M.
—~14—

|
MOSCcI-La-8
AVAL
‘Aa
TW
NOLLVaadO
Ip~Se
90 V~0dV
YOLAES
AOVLIOA
LF
wS6S
AO
STACOW
l
ACIMATYOM
|
l
|
|
|
| [
1 | |
LISIG
INANWDaS
OA66TI-LAN
106L
O9PS-91
L0SdXD
val
YOSSHOOAdOUWIN
:
wana
ov
|
09
OOSUN
9010
LNA
LNO/LNANI
ri
EISISIAlS
SISjS
£0ld
2
Alole
wnlzln
SFE
RBFEI(E
Sauk
FET
EEE
Ty
inaino
S
-
TUES
oe
Oy:
|
SBE
EF
epee
CL
sie
g
oo
a4
Oa/Ovooszaxd
Bre
S
—
a
‘aNOHAGVaH
YOSSAOONd
fe
HOLIMS
TWNOIS
a
i
<Sl#
7|
ISsd
|
LovO'Sord
Tosa
FNNTIOA
WVYHSVIC
19018
:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
re)
rf 09
py x fa
|
oe Sarma > smite GS CEE 08 Go oF Ee OS Gee 6 Soe oS ee 08 Soest CD Ce oS
Ahel
OC
@e@i
OC
e311
OC
i
oi
Ree
eee
eh
aes
@n@i
co
Gee
as)
alk
PEt
ef
Del
2)
ess
patel
Stata
a
S
Sis
ee
anes
no
foo
fos
foo
fe
Tw
jee
tye
fre
|
oe
><)
Sean
<@
ee
es)
el
aR
Oh
DAS
6
SH
GH
BL
Yo
ere
eee
OF
GE)
el
SR
CA
GH
PW
pe
iene
Ea
een
pie
=
fol
s)
aS
i
aan
2
eee
Ei
arog)
non
er
wool
no
NZ
yo
©
Ts nOGs EEE 906
wos
Oty
Tat
bo49
“foie”
49018
WSINVHOAN
WVHSVIC
DILVINSHOS
—~15—

D> Cy ace 10)
ADJUSTMENT
PROCEDURES
It
is
not
necessary
to
perform
the
adjustment
of
optical
pickup.
This
confirmation
ites
be
made
we
replacing
the
optical
pickup.
Focus/Tracking
Gain
Adjustment
The
following
is
a
simple
adjustment
method.
5.
Connect
oscilloscope
to
main
board
TP
(TEO).
1).
Connect
the
oscilloscope
to
test
points
RF
and
VC.
7
.
.
Osilloscope
A
frequency
response
analyzer
is
necessary
in
~
Simple
Adjustment
—
6.
Adjust
RV104
so
that
the
waveform
is
as
shown
in
order
to
perform
this
adjustment
exactly.
: .
s
.
DC
range
i
y
Note:
Since
exact
adjustment
cannot
be
performed,
remem-
the
figure
below.
(tracking
gain
adjustment)
VOLT/DIV: 1 V
;
f
it
is
3
However,
this
gain
has
a
margin,
so
even
it
ber
the
positions
of
the
controls
before
performing
the
TIME/OIV:
2mS
slightly
off,
there
is
no
problem.
Therefore,
do
not
adjustment.
if
the
positions
after
the
simple
adjust-
perform
this
adjustment.
ment
are
only
a
little
different,
return
the
controls
to
the
original
position.
Focus/tracking gain determines the pick-up follow-
oscilloscope
=~ 0
RF/
Servo
pc
board
up
(vertical
and
horizontal)
relative
to
mechanical
(DC
range)
TP(RF)
G
noise
and
mechanical
shock
when
the
2-axis
device
Procedure:
TP(VC)
CG
operate.
main
board
2),
Tum
he
power
swith
on
—La
a
oa
Pe
3).
Load
the
test
disc
YEDS-18
on
the
tray
and
press
the
play
button.
)
rie
_
©
Incorrect
Examples
(fundamental
wave
appears)
i
: :
@
When
gain
is
raised,
the
noise
when
the
2-axis
|
|
4).
Confirm
that
the
waveform
on
the
oscilloscope
1s
optumum
eye
TP
(TEO)
Oe-
-7
low
tracking
gain
device operates increases.
pattern
and
optimum
level
as
shown
photo
1.
VOLT/DIV:
1V
@ When gain is lowered, it is more susceptible to
j
mm
at
shape
"<>"
can
be
clearl
eee
TIME/DIV:
2mS
Opumum
eye
patte
eans
that
shape
o
y
mechanical
shock
and
skipping
occurs
more
easily.
pacmeer
heise
HOMZONI
a
distinguished
at
the
center
of
the
waveform.
.
If
the
set
is
not
horizontal,
this
adjustment
@
When
gain
adjustment
is
off,
the
symptoms
below
cannot
be
performed
due
to
the
gravity
against
ge
appear.
the
2
axis
device.
On 445 .Sidiz ; wee
iy
an
1 ig
So ee ee meen = pe Oe Pa ee i
1
i
tl
. Insert disc (YEDS-18) and press >PLAY button.
_
Connect
oscilloscope
to
main
amp
board
TP
(FEO).
Adjust
RV103
so
that
the
waveform
is
as
shown
high
tracking
gain
;
:
:
(higher
fundamental!
wave
than
for
low
gain)
in
the
figure
below.
(focus
gain
adjustment)
t
r} 3 A
Si
ae ~
Ww
e The time until music starts
becomes longer for STOP
+> DPLAY or automatic
selection (Kd PPE buttons
pressed. (Normally takes
about 2 seconds.)
Nf RRC
\ gains DO Xt oe
BOX
Wd ON
VOLT/DIV: IV
TIME/DIV: 2mS
VOLT/DIV: 100mV
TIME/OIV: 2mS
e Music does not start and
disc continues to rotate
for STOP >DPLAY or
automatic selection (ed
PPI buttons pressed.)
100 mV ee aged oe Pare j iti alta cae
. ial iba VV GV i laviens
OV
——=0'V
Photo 1
A=1.2+0.3Vp-p
e Sound is interrupted dur-
ing PLAY. Or time count-
er display stops progress-
Ing.
@ Incorrent Examples (DC level changes more than
on adjusted waveform)
Adjustment Location: main board
low focus gain
VOLT/DIV: 100mvV
More poise during 2-axis
‘
3
:
TIME/DIV:
2mS
device operation.
bI— 250 mv
GND®
er a, @TE
high focus gain VOLT/OIV: 100
TIME/OIV: 2mS
—-17-
=
bse

DX-7310 | DX-7310
PRINTED CIRCUIT BOARD VIEW FROM BOTTOM SIDE
POWER TRANSFORMER PC BOARD
MAIN CIRCUIT PC BOARD
— 19 — = 90 <3

A B C
SCHEMATIC
DIAGRAM
pers
7
ePPARRRP RIDE
Q101
CXD2500BQ
assiiniintii
B 4 B 6 7 A B 1044 12.43 4448 16 17 18 19 BO 21 22 2S 26 2S Bh Z7 3B 29 W Fi 32 BS 34 BS BS BY BO BO
bb a
pt §) Ea CECoc LL ES bp bbb bb bbbbbS
Lee nee sence emanmrreannanettthenend aac tena ‘
TIIETEPPEPPDRRRREEREREREEEREENS!
1)
Boa
DOOOOD OOOO OOOO OO OODO ODDO OND N000000 SOO GO OO
CELECCECCCOSOGGSRDbapDODDDDSDLCL J
CXP50116
eeEeesssds Eeies
a
‘
Sif hihi
it
De
ee
1
Wa713A or 188133 | | |
er 1$S$270 ig
| fi Wa715A
PAS ne
LE a eer ol EERE Aldi
A ane
R501
@ THE COMPONENTS IDENTIFIEDBY MARK
REPLACE ONLY WITH PART NUMBER SPECIFIED.
© VOLTAGE (MEASURED WITH VOLTMETERIGIIS DC VOLTAQE{NO INPUT SIGNAL)
@ ALL PNP TRANSISTORS ARE EQUIVALENT TO 28A1015-GR UNLESS
OL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1618-GR UNLESS
UNLESS OTHERWISE NOTED.
OTHERWISE NOTED.
. 0, OSS,
N 174 WATTS UNLESS OTHERWISE NOTED. .
PC BOARD ARE THE PRINTING SIDE OF THE PARTS.
PRINTING SIDE
1S SUBJECT TO CHANGE POR IMPROVEMENT.
CRITICAL FOR SAFETY.

|B) Cy acu 0)
|B) Cy ace 18)
PRINTED CIRCUIT BOARD —- PARTS LIST
Main circuit PC Board ( NAAR-5222-1)
CIRCUIT NO. PART NO.
Q101
Q102
Q103
Q104
Q105
Q106
Q107
Q108
Q301
Q401-404
Q405-408
Q901
Q902
Q903
Q904
Q905
Q906
D101-104,
D106
D105
D901-905,
D907,908
D906
D909
X301
C101
C103
C104
C105
C332,334
C407,408
C409,410
C413,414
C415,416
C427,428
C901
R118
R901 ,902
Semiconductors
22240487A
22240753
22240018
221281
2213355 or
2211455
2213090
24120038
22240322
22240726
22240191
2214281
222780055MIT
222780053
22278007SMIT
222780085MIT
222790085 MIT
2211504
223222
223205
223163
224450562
22380032
224452202
224450512
Coils
3010159
Capacitors
374721034
374721524
374724734
374721044
374724744
374721824
374721034
374728214
374724724
374721034
393344727
Resistors
49163472407
443622214
DESCRIPTION
CXD2500BQ
CXP50116-546Q
M51943A
DTC114YS
2S A933S-S or
2SA1015-GR
DTA114YS
GP1F32T, OPT MOD
LB1639
SMS5872CN
NJM4S65D-D
2SD2144S-U
MS5F78M05L
78L05
MSF78M07L
MS5F78MO08L
MSF79M08L
2SA950-Y
WG713A
1SS270A
1SS133
MTZ5S.6B, Zener
1SR139-100
MTZ22B, Zener
MTZ5.1B, Zener
AT-38-169, CRYSTAL
ECQ-BSOV, 1033, TFC
ECQ-BS5OV, 152), TFC
ECQ-VSOV, 473], TFC
ECQ-VSOV, 104J, TEC
ECQ-VSOV, 474], TEC
ECQ-B5OV, 182), TFC
ECQ-BSOV, 103), TFC
ECQ-BSOV, 8213, TFC
ECQ-BSOV, 4723, TFC
ECQ-BSOV, 1033, TFC
_ CE04WI16V, 4700M, VX C
RM1/10U, 4.7K*7, R NET
RS1WBJ, 220, METAL OR
Mechanism PC Board
CIRCUIT
NO.
PART
NO.
DESCRIPTION
CIRCUIT
NO.
PART
NO.
Switches,
Terminals
IC101
24840089
Pl10la
25050866
or
NSCT-37P661
or
IC102
22240551
25050977 NSCT-37P764, SOCKET IC103 22240101
P103
25050854
or
NSCT-22P649.or
RV101,102
24840085
25050962
NSCT-22P749,
SOCKET
SWI101
2480070
P104
25045330
NPJ-2PDBL184,
JACK
CN101
24840072
P401
25045397
NPJ-4PDWR222,
PIN
JACK
CN102
24840071
P901b
25051111
NSCT-7P898,
WIRE
HOL
Display circuit PC Board (NADIS-5223-1)
CIRCUIT NO. PART NO. DESCRIPTION
Semiconductors
Q701 212109 8-BT-125GK, FL TUBE
Q702 24130010 HC-312, REMO SENS
Switches, Terminals
$701-707, 25035548 NPS-111-S510, P SW
S§710-728
P101b 25050898 NSCT-37P693, SOCKET
25050943 NSCT-37P730, SOCKET
27190754AY HOLDER(FL)
Headphone amplifier PC Board (NAAF-5224-1)
CIRCUIT NO. PART NO. DESCRIPTION
Semiconductor
QS01 22240369 MS5218AP
Resistor
R501 5104327Y N16RGM20KB20F, VARI R
Power switch PC Board (NAAF-5225-1)
CIRCUIT NO. PART NO. DESCRIPTION
Terminal
P551 25045441 YKB26-5801, JACK
Power transformer PC Board (NAPS-5226-1) |
CIRCUIT NO. PART NO. DESCRIPTION
Terminals
25060092 NTM-1S33, TRM
POO1A 25051111 NSCT-7P898, WIRE HOL
Voltage selector switch PC Board (NAPS-5227-1)
CIRCUIT NO. PART NO. DESCRIPTION
Capacitor
C951 A, 3500065A DE7150FZ103P, AC400V/125V, IS C
Switch
NOTE:
THE
COMPONENTS
IDENTIFIED
BY
MARK
/\
NPS-111,
-L590P,
P
SW
ARE
CRITICAL
FOR
RISK
OF
FIRE
AND
S951 A\ 25035636
99
DESCRIPTION
CXA1372AQ,IC
LA6532M-T1,IC
M54641L,IC
10K,Trim resistor
Leafswitch
Connector
Connector socket
ELECTRIC SHOCK. REPLACE ONLY WITH
PART NUMBER SPECIFIED.
HEADPHONE PC BOARDS
NCSW~5228 pam 251352
“a7 137) J
; $952
VOLTAGE SELECTOR SWITCH
PC BOARD
NCPS-5226 J91
POWER SWITCH
PC BOARD

PACKING VIEW
PART NO.
29110071
2910037-1Y
29091637-1AY
29091636-1AY
282321
29052850Y
Accessary bag ass'y
2010244 Y
2010200
24140278 Y
3010054
29342102Y
29342103 Y
29100097-1Y
25055040
REF NO.
Nr KR WD =
NOTE:
<P>:230V model only
<W>:World wide model only
DESCRIPTION
50 X 60cm, PP tape
650 X500mm,Styrene bag
Pad R
Pad L
Staple
Master carton box
Connection cable
Connection cable for remote control
RC-278C,Remote control transmitter
UM-3,Two batteries
Instruction manual<P>
Instruction manual<W>
350 X 250mm,Styrene bag
CV-K-2,Conversion plug<W>
— 25 —

Grace
ONKYO CORPORATION
Sales Planning & Promotion Dept.: 2-1, Nisshin-cho, Neyagawa-shi, OSAKA 572, JAPAN
Tel: [phone] Fax: [phone]
ONKYO U.S.A. CORPORATION
200 Williams Drive, Ramsey, N.J. 07446, U.S.A.
Tel: [phone] Fax: [phone]
ONKYO DEUTSCHLAND GMBH ELECTRONICS
Industriestrasse 18-20, 82110 Germering, GERMANY
Tel: [phone] Fax: [phone]
ONKYO FRANCE
Immeuble Le Diamant, Domaine Technologique de Saclay, 4 Rue René Razel,
91892 SACLAY, FRANCE Tel: [phone] Fax: [phone]
3 9R =
Part No. OM3507 N505 Printed in Jagpan