ONKYO CR-305X User Manual

22

21

The laser diode in the optical pickup block is so sensitive to static electricity,surge current and etc.
That the components are liable to be broken down or its reliability remarkably deteriorated.
During repair,carefully take the following precautions.
Do not touch the optical pickup object lens with the hands.

(5) Solder the LD short terminal 1 on mechanism
     (Fig-6)
(6) Disconnect the flexible flat cable P352. (Fig-6)

(7) Replace the optical pickup.

(8) Connect the flexible flat cable P352. (Fig-6)

(9) Unsolder the LD terminal 1 on mechanism. (Fig-6)

screw

screw

NAETC-6883
(Soldering side)

LD short terminal 2

LD short terminal 1

P352
to NAETC-6883

NAETC-6883
(Component side)

J293

NAETC-6883

P351

to main PC board 

(NAAR-6875)

CD Mechanism

The machine screw of four points which is the fixation
 of mechanism is removed, mechanism is upset, and 
PC which is about the bottom of mechanism is seen.
 (Fig-1,Fig-2)

(1)

The machine screw is removed and CD connector 
PC board(NAETC-6883) is removed from the main body
 of CD mechanism.(Fig-3)

(2)

Connect J293 (or LD short terminal 2) on CD 
Connector PC board (NAETC-6883) first when 
you replace an optical pickup. (Fig-4)

(3)

Remove socket P351 between the CD 
Connector PC board and the Main circuit 
PC board.(Fig-5) 

(4)

Connect the socket P351 between  CD Connector
 and Main circuit PC boards (NAAR-6875).
(Fig-5)

(10)

Cut J293.(or Unsolder the LD terminal 2) (Fig-4)

(11)

screw

CD mechaniam

CD connector PC board
(NAETC-6883)

P352
to CD mechanism

1
6
7
8
9

10
12
14
15
16
20
22
23
24
25
26
31

33
41

43
46
47
50
52

53

54
55

F901 

P302 
P303 
P351 
P352 
P701 
P778 
P901 

Q557,Q558 

Q559,Q560 

Q557A
Q557B

T901 

Z1 
Z2 
Z3 
Z5 
Z6 

PART NO.
27111168
838130088
27100384
27190693A
27191112
27191110
27175253-1A
27300750
830440069
831430088
28184781
28184782
838930088
28325775A
28148447
27150456
27122738
27122739
838430068
27212217
27212218
27268027A
28198909
28191888
880009
29362650
29362700
29362651
29362699
29362652
29362572A
29362571
29360687
29362285

252157
252083
2009990500
20022391210
2047161012
2042161022
2047360612
2047151012
253294HDK
253287HIT
253237HIT
2203384 or
2203383
2203394 or
2203393
27160468
801433
2301452
2301454
2301453
24800018A
24840133
24840135
838120080
838426088

ÅI

ÅI
ÅI

ÅI
ÅI
ÅI
 *
 *
 *
 *

ÅI
ÅI
ÅI

DESCRIPTION
Front brakcet
3TTB+8B, Self tapping screw
Chassis
KGLS-6RF, Holder
KGPS-6RF, Holder
Hoder, M
Leg
Busing, cord
4TTC+6C(BC), Self tapping screw
3TTW+8B(BC), Self tapping screw
Cover, HT
Top cover
3TTB+8B(UN), Self tapping screw
Knob, volume
Tray panel, CD
Shield plate
Rear panel<D>
Rear panel<P, GR, DT, GT>
3TTB+6B(BC), Self tapping screw
Front panel<D, GR, DT, GT>
Front panel<P>
Guide, volume 
Facet
Clear plate
Plastic rivet, NRP-345<P, GR, GT>
Label, Spec.<D>
Label, Spec.<GR>
Label, Spec.<DT>
Label, Spec.<GT>
Label, Spec.<P>
Label, Warning <D>
Label, Warning<P, GR, GT, DT>
Label<GR, GT, P>
Label

1.25A-UL/T-237, Fuse<D, DT>
0.4A-SE-EAW, Fuse<P,GR, GT>
NSAS-10P0654, Socket
NSAS-12P0723, Socket
NCFC7-161012, Flexible flat cable
NCFC2-161022, Flexible flat cable
NCFC7-360612, Flexible flat cable
NCFC7-151012F,lexible flat cable
AS-UC-2#18, Power supply cord<D, DT>
AS-CCEE, Power supply cord<GR>
AS-CEE, Power supply cord<P, GT>
2SC3851-Y or
2SC3851-O, Transistor
2SA1488-Y or
2SA1488-O, Transistor
Heat sink
3SMS8W.SW+14B(BC), Special screw
NPT-1391D, Power transformer<D, DT>
NPT-1391G, Power transformer<GR, GT>
NPT-1391P, Power transformer<P>
NCD-170S, CD mechanism
Boss, PCB
Boss, PCB3
2TTB+8P,  Self tapping screw
2.6TTB+8B(BC),  Self tapping screw

U1

U2

U3

U4

U5

U6

U7

U8

U9

U10

PART NO.
H445574-1A
1H445574-1B
1H445574-1C
1H445574-1D
1H445578-1A
1H445578-1B
1H445578-1C
1H445578-1D
1H445579-1A
1H445579-1B
1H445579-1C
1H445579-1D
1H445580-1A
1H445580-1B
1H445580-1C
1H445580-1D
1H445581-1A
1H445581-1B
1H445581-1C
1H445581-1D
1H445582-1A
1H445582-1B
1H445582-1C
1H445582-1D
25136900

1H445575-1A
1H445575-1B
1H445575-1C
1H445575-1D
1H445583-1A
1H445583-1B
1H445583-1C
1H445583-1D
240134
240135

NOTE : 

CAUTION : Replacement of the transistor of mark  * ,if  necessary, must be      

DESCRIPTION
NAAF-6874-1A, Selector circuit PC board ass'y <D>
NAAF-6874-1B, Selector circuit PC board ass'y <P>
NAAF-6874-1C, Selector circuit PC board ass'y <DT>
NAAF-6874-1D, Selector circuit PC board ass'y <GR, GT>
NAPS-6878-1A, Power supply PC board ass'y <D>
NAPS-6878-1B, Power supply PC board ass'y<P>
NAPS-6878-1C, Power supply PC board ass'y <DT>
NAPS-6878-1D, Power supply PC board ass'y<GR, GT>
NADIS-6879-1A, Display circuit PC board ass'y <D>
NADIS-6879-1B, Display circuit PC board ass'y<P>
NADIS-6879-1C, Display circuit PC board ass'y <DT>
NADIS-6879-1D, Display circuit PC board ass'y<GR, GT>
NAAF-6880-1A, Power amplifier PC board ass'y <D>
NAAF-6880-1B, Power amplifier PC board ass'y<P>
NAAF-6880-1C, Power amplifier PC board ass'y <DT>
NAAF-6880-1D, Power amplifier PC board ass'y<GR, GT>
NAETC-6881-1A, Speaker terminal PC board ass'y <D>
NAETC-6881-1B, Speaker terminal PC board ass'y<P>
NAETC-6881-1C, Speaker terminal PC board ass'y <DT>
NAETC-6881-1D, Speaker terminal PC board ass'y<GR, GT>
NAETC-6882-1A, Digital output PC board ass'y <D>
NAETC-6882-1B, Digital output PC board ass'y<P>
NAETC-6882-1C, Digital output PC board ass'y <DT>
NAETC-6882-1D, Digital output PC board ass'y<GR, GT>
NCETC-6900,  PC board for holder  <P, GR, GT>

NAAR-6875-1A, CD circuit PC board ass'y<D>
NAAR-6875-1B, CD circuit PC board ass'y<P>
NAAR-6875-1C, CD circuit PC board ass'y<DT>
NAAR-6875-1D, CD circuit PC board ass'y<GR, GT>
NAETC-6883-1A, Connector PC board ass'y<D>
NAETC-6883-1B, Connector PC board ass'y<P>
NAETC-6883-1C, Connector PC board ass'y<DT>
NAETC-6883-1D, Connector PC board ass'y<GR, GT>
TFCE1U114A, Tuner unit<D>
TFCE1E512A, Tuner unit<GR, GT, P DT>

<D>    
<DT>  
<P>     
<GR>  
<GT>  

THE COMPONENTS IDENTIFIED BY THE MARK      ARE
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
REPLACE ONLY WITH PART NUMBER SPECIFIED.

: USA & Canadian models only
: Taiwanese model only
: European model only
: Chinese model only
: Asian model only

made from the same beta group(HFE)  as the original type.