Troubleshooting Guide; Troubleshooting And Corrective Action - Hitachi H 60MEY Service Manual

[Bold] numbers in the description below correspond to the item numbers in the parts list and exploded
assembly diagram for the Model H 60MEY, {Bold} numbers to those for the Model H 60ME, and <Bold>
numbers to those for both models.

1. Troubleshooting and corrective action

Perform troubleshooting and take necessary corrective action according to the table below if there is a
problem that cannot be solved by the corrective action described in the handling instructions.
Problem
All the four LEDs • Broken Controller
of the display
lamp are flashing.
Three LEDs of • Mix-up of three
the display lamp
are flashing.
• Broken Controller
• Broken Rotor <66>
Two LEDs of the • Broken Controller
display lamp are
flashing.
One LED of the • Improperly
display lamp is
flashing.
• Broken Stator
• Broken Controller
• Broken Rotor <66>

TROUBLESHOOTING GUIDE

Cause
• No check needed.
Ass'y <67>
• Check the heat-shrink tube
internal wires of
Stator Sensor PCB
Set <58> and
Controller Ass'y
<67>
• Check the state of the
Ass'y <67>
• Check the built-in magnet of
• No check needed.
Ass'y <67>
• Check the plug-in state of the
connected
connector cable of
Stator Sensor PCB
Set <58>
• When the connector cable is
Sensor PCB Set
<58>
• Check the plug-in state of the
Ass'y <67>
• Check the built-in magnet of
Check
colors (red, black, and white)
of internal wires connecting
the Stator Sensor PCB Set
<58> and Controller Ass'y
<67>.
Controller Ass'y <67>
connector.
the fan for breaks.
connector cable.
(See "Reassembly of the
power supply unit" on page
12.)
not defective
Controller Ass'y <67>
connector.
the fan for breaks.
-1-
Corrective action
• Replace the Controller
Ass'y <67> with a new
one.
• Correctly connect internal
wires of the Stator Sensor
PCB Set <58> and
Controller Ass'y <67> by
their tube colors (red,
black, and white).
• Replace the Controller
Ass'y <67> with a new
one.
• Replace the Rotor <66>
with a new one.
• Replace the Controller
Ass'y <67> with a new
one.
• Firmly plug the connector
cable.
• Replace the Stator
Sensor PCB Set <58>
with a new one.
• Replace the Controller
Ass'y <67> with a new
one.
• Replace the Rotor <66>
with a new one.