Meyer E-58H - Page 75

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ELECTRONIC TROUBLESHOOTING E-78 & E-88
TIMEOUTS: The RCM will power off after 2 hours
of inactivity. This conserves battery life if the unit is
accidentally left on when driver leaves. This should
provide ample time to transport between jobs or just
to stop for lunch, etc. Simply pressing any button can
reset this timer.
The Plow lights will remain powered on if there is a
loss of communications. The moldboard functions
will be disabled during this time. This can occur for a
couple of different reasons:
1. If the Meyer accessory port plug is accidentally
pulled out before the RCM is powered off normally.
2. If there is a real loss of communication between the
PCM, HCM and RCM.
Overcurrent: The hydraulic unit will be shut down if an
overcurrent situation occurs for more than 2 seconds.
An alarm will sound and “Overcurrent” will appear
on the display. This might happen when the blade is
taken to full stops in any direction and held. “Stacking
snow” is one reason this may occur. To reset, simply
release the button and press again. If the fault occurs
again the hydraulic unit will be shut down again.
Alarms/Faults: All faults will sound an alarm. To
extinguish the alarm, press any button. To remove
fault from the screen, press the Exit button to return to
normal screen. The fault will remain in the diagnostic
menu until it is cleared. All moldboard functions will
remain active during the alarms, unless perhaps it is
a bad solenoid. Example: A bad “B” solenoid, then
the moldboard cannot be moved Up, but Left, Right,
and Down are still available.
4. TROUBLESHOOTING DIAGRAMS
RCM will not power On
Plow Lights do not follow OEM switch positions
(RCM and PCM are connected correctly and are
working)
RCM Display shows Dark Lines, Updates slowly
4.0 Troubleshooting Flow Diagrams
Press
Green
button > 1
se
c ?
Press green button
for 1 second
No
RCM will emit the
triple beep at
power on even
if
the button click is
turned off through
the menu
Power
get
ting to
RCM ?
Check all electrical
connecti ons
Power cycle RCM
No
Yes
RCM will not power ON
Replace RCM
Yes
Is HCM
connected
securely
and
co
rrectly?
Are voltage
le
vels
co
rrect?
(r
efer to
manual)
Does HCM
icon
appear o
n
RC
M
di
splay?
Replace HCM
Yes
Yes
Yes
Clean and tighten
connections
No
Power cycle HCM
No
If after power
cycl
e, still no icon.
Replace HCM
Plow Lights do not follow OEM switch postions
(RCM and PCM ARE connected correctly and are working)
RCM Display shows Dark Lines, Updates slowly
BLade,
Ligh
ts
working
no
rmally ?
LCD display is
col d. This should
cause no
functional problems
An LCD display will
no
t update/refresh
it
self very qui ckly in
cold weather. All
blade functions
should be normal.
The information on
the screen may be
slow to keep up
with the action
though.
Allow the RCM to
wa
rm up.
Yes
Power to RCM was
disconnected
abnor
mal ly. Power
cycle the RCM,
ve
rify secure
connections to
RCM a
nd cigar
accessory jack.
No