Hitachi C 12LSH Technical Data And Service Manual page 70

Item
Phenomenon
Laser line does not
9
match the cutting
position.
Digital display does
10
not indicate anything.
(Only Model C 12LSH)
Digital display does not
11
indicate properly.
(Only Model C 12LSH)
(Miter angle)
(Bevel angle)
(Miter angle)
(Bevel angle)
Angle indicated on the
12
digital display can not
be reset.
(Only Model C 12LSH)
Back light of digital
13
display can not be
turned on/off.
(Only Model C 12LSH)
Cause (s)
a Laser marker is
horizontally deviated
from the saw blade.
b Laser marker accuracy
is not adjusted
properly.
a Improper wiring in the
monitor, break in the
internal wiring, monitor
failure, or controller
failure
b Switching power
supply failure
a Same as item 10- a
to b .
b Encoder failure
c Cord (B) or Cord (C)
are disconnected.
a Faulty switch on the
circuit board in the
monitor, monitor
failure, or controller
failure
a Faulty switch on the
circuit board in the
monitor, monitor
failure, or controller
failure
Factory
standard
------
0.2/100
(Figs. 90 and 91)
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Inspection, repair or adjustment
• Adjust the position of the laser
line. (Refer to "8-4. Position
Adjustment of Laser Line".)
• Same as item 8- b .
• Check the wiring.
• Replace Monitor [260].
• Check the Switching Power
Supply [233] for conductivity,
input and output referring to
"11-4. Wiring Diagram".
• Replace the Switching Power
Supply [233].
• Same as item 10- a to b .
• Replace the Encoder [35].
• Replace the Encoder [16].
• Replace Cord (C) [18] or Cord
(B) [168].
• Replace Monitor [260].
• Replace Monitor [260].