Panasonic JB-3300 Technical Manual page 363

6.3 Trouble Analysis Table
Table 6.1
item Trouble No. Cause eee
JU-3x3, 3x4 JU-3x2
1 Index detection 1 Collet part faulty
failure 2 DD motor control PCB Replace DD motor, Replace DD motor
3 DD motor faulty Base assembly y
4 Index LED faulty Replace DD motor,
senognnenananeas Replace
5 Index detector faulty Base assembly
6 Index LED/index detector installation faulty
7 PCB motor ON circuit a ee
8 PCBindex detectioncircuit -Repai DS Mm ee
2 Not ready 1 See Item 1.
2 PCBreadycircuit
Rep i
sf
3 Track O detection 1 Track 00 assembly a He
failure 2 PCB track O detection failure oS we
4 No head loading 1 See Item 1.
2 See Item 2.
3 HDLsolenoid E:Reptae
4 PCB HDL circuit Ko << a
5 No seek 1 Steppermotor —: Replace a a
2 Guide shaft contamination or damaged wm << a
3 PCB stepper driver circuit Alep: soe Be
6 No WRITE 1 See Item 1.
2 See Item 4.
3 Head disconnected we og
4 Head shorted a wg
5 HDL bail height wrong
6 PCBwritecircuit | Repair Kk hoe
7 No READ 1 See Item 1.
2 See Item 4.
3 See Item 6.
4 PCB read circuit < a
8 READ ERROR 1 See Item 1.
2 See Item 4.
3 See Item!7.
4 Alignment a a
5 Azimuth fo ee a
6 Burst Unadjustable Unadjustable
7 Asymmetry — — — — — s — " ' i — s S s — s — s S s S s S s S S S S Adj.
8 Limiter Adj. Adj
9 FlagO a a oo
10 HDL time Adj.
11 Index period Replace DD motor, Replace
Base assembly
12 PCBreadcircuit Repa we x
9 IN USE LED 1 LED part oe se
won't light. 2 |PCBINUSEcircuit Repair | <—
10 Write protect 1 Writeprotectpart |Repta Peane O motor, Base Replace
failure 2 Write protect circuit CS oP eg ee
Note: 3 €—: Stand for the same as left.
7. PREVENTIVE MAINTENANCE
No preventive maintenanceis necessary for any type of FDDs under normal conditions of use.
W-—o