Komatsu PC200-8M0, Shop Manual, Page: 436 / 1254

SEN06128-00
30-102
16
PC200, 200LC, 220, 220LC-8M0
102 Testing and adjusting, Part 2
Special functions of machine monitor
a
Actions to take given by action levels to opera-
tor (Excerpt from the Operation and Mainte-
nance Manual)
Function of checking display of LCD (Liquid
Crystal Display)
While the standard screen is displayed, if the
numeral input switches or function switches are
operated in the following manner, the entire LCD
screen turns white.
q Switch operations (simultaneous): [4] + [F2]
a
When finishing the operation of the switches,
release [F2] first.
a
If there is a display error in the LCD, only that
part is indicated in black.
a
To return to the former screen, press any one
of the function switches.
Reference: An LCD panel, as one of its characteris-
tics, sometimes shows black spots (spots that
remain unlit) and bright spots (spots that do not go
off).
If the number of the bright points and black points
does not exceed 10, the LCD panel is not faulty or
defective.
Function of checking service meter
When checking the service meter with the starting
switch in the OFF position, operate the numeral
input switches as follows to display only the service
meter section.
q Switch operations (simultaneous): [4] + [1]
a
There is some time lag in start of the LCD, so
hold down the switches until the service meter
is displayed.
a
If you release one of the switches, the monitor
goes off.
Reference: After the machine monitor is used con-
tinuously over a long period of time, blue points
(points that remain lit) may appear on this screen. It
does not indicate that the LCD panel is faulty or
defective.
Degree
of emer-
gency
Action
level
Buzzer
Alarm
monitor
Remedy
High L04
Q
(Con-
tinu-
ous)
Q
Stop immediately
and perform
checking and
maintenance.
Ask your Komatsu
distributor for test-
ing and repair ser-
vices.
I
L03
Q
(Inter-
mittent)
Q
Stop work, move
machine to safe
place, stop it, and
perform checking
and maintenance.
Ask your Komatsu
distributor for test-
ing and repair ser-
vices.
L02
Q
(Inter-
mittent)
Q
Stop work, and
then run the
engine at medium
speed with no
load, or stop it. If
the condition does
not improve, ask
your Komatsu dis-
tributor for testing
and repair ser-
vices.
Low
L01
(For 2
seconds
only)
—
Q
Some functions
are restricted, but
the machine can
work. After finish-
ing work, perform
checking and
maintenance.
Ask your Komatsu
distributor to per-
form testing or
repairs as neces-
sary.