Panasonic JU-455-5 - Trouble Analysis Table

6.3 Trouble Analysis Table
T ab le 6.1
Item
Trouble
N o. Cause
S.2S·j' ndi
JU-3x3
,..
JU- 3x2
1
Index detection 1 Collet art fault R.
lace,
,
fai lure
2
DO motor (Ontlol PC B ~ ~eploce Replace DO motor .
Replace 00 motor
~liIpllM':e : : :~: :
Base assembly
assemblV
3 DO motor faulty
4
Index LEO faultv
f':Il!'pl<IC!, : :\:
Replace DO m oto r.
5
Index detector faulty
ReP
laCe : :, :,:, :: :
Base
assembly
Replace
6 Index LEDlindex det!!Ctor i ns tallation faultv
Adj,
,
7 PCB motor ON circuit R'epalr
*,
-
*:
-
•
PCB index detection circuit
Repair
, ,
;i,
-
>;,
-
2
Not
ready
1 See I tem 1. '?
... .
2 PCB ready circuit
Rep~ir
'.'
*,
-
,; ,'
-
3 Track 0 detection
1
Track 00 a~5embl y
:', .AeplltC!I
!!i
-
if .
-
failure
2
PC B Irack 0 detection failure Rapai,
*
<
:!,
-
4 Na head loading 1 See Item 1,
N, . 'CA? ).
2
See
Hem 2,
3
HOL solenoid ::: ReP t~e
:(
4 PCB HDL tircuit
Repair >;(
-
, ..
<
5 Na seek
,
Stepper motor
Rep hke ""''-::~
)"
-
;;;
-
2
Guide shaft (Ontamination or damaged
Rep ix .e :: :)
ii ~ <
)"
-
3
PCB stepper dr i ver circuit
'Repai'r rh<W ;-"
-
::' .
<
6
NoWR ITE
,
See Item 1.
i ·'
•• ••
2 See Item 4.
\iF'
'" .,.,
3 Head disconnected R.epface
,
:: ;
-
3;:
<-
4 Hlilad shorted Replace ' ::' :
,::
-
:!'
-
5
HDL bail height wrong
Adj :=: '
6
PCB write circuit
Aepai~
,
:,s :
<
; , ~
-
7 No READ
,
See Item 1. .. ... .
2
See
Item 4.
.,.
,. ,,' .
3 See Item 6. .. '
4 PCB read circuit Rep'air
, ,&
1' \
-
'"
-
•
READ ERROR
,
See Item 1.
.... .
2
See Item 4.
'I' \ .•.• ,
3 See I temO" .
,
' .
..
4 Alignment Adj.
.. .... ;:;
-
;;,
-
5 Azimuth ,Uiladju uable
,i ;
-
;::
<
6
Burst Ad( ,'
?
Unadjustable
UnlKljUSlable
7
Asymmetry
AOj . Adj.
•
Limiter
UQadjuSfable :; Adj.
Adj.
,
Fl agO
'Adj,
>; :
-
'"
<
10 HOl time p,dj ,
'"
"
Index period
~dj , ; ,
•... ".:',.
Replace DO motor,
Replace
Base ;5Ssembly
12 PCB read circuit
Repair'
:;:
<
;-So
-
,
IN USE lEO
,
LEO part
fI"plece ':"" .-.~ m
-
~
-
won't light.
2 PCB IN USE circuit Repair
.i
,, :
-
'0
Write p rotect
,
Write protect part
fI~l8(;e
R.plK O DD_. ...
Replace
.... '"
failure
2
Wr ite protect circuit
.'~
.,
:I:
-
,,~
-
Note: ii, (- : Sta nd for the same as lett.
7. PREVENTIVE MAINTENANCE
No pr eve nt ive m ai nt ena n ce is n ecessary far any type of FODs und er normal cond i tio ns of use.
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