Corrective Maintenance; Visual Identification Of Alarms (Leds); Measurements Readings - Hitachi EC701HP Operation Manual

Section 6 - Preventive / Corrective Maintenance
E-Compact Transmitters
6.3

Corrective Maintenance

6.3.1 Visual identification of alarms (leds)

STEP 1
The front panel LED indicates when lit:
POWER ON – Device is on
SYNC. LOSS – Input Signal Loss.
CURRENT ALARM – An alarm is occurring.
PAST ALARM – Existence of an old alarm in the "Alarm Log".
STEP 2
and the connections on the rear panel of the exciter.
STEP 3
Alarm/Log  Power Setup) and check the existing alarms.
6.3.2 Measurement readings
6.3.2.1 Power Drawer
STEP 1
modules.
Access on the exciter front panel: Main Menu  Measurements  Drawers and compare
with the equipment measurements report. If there is any abnormality, contact the Hitachi Kokusai
Linear Service Department.
6.3.2.2 AC Unit (MCCB) - Only high power transmitters – HP Series
STEP 1
bottom of the equipment.
Access on the exciter front panel: Main Menu  Measurements  Eqp.Power Supply and
compare with the equipment measurements report. If there is any abnormality, contact the
Hitachi Kokusai Linear Service Department.
Manual Rev. 0.0 - June 2016
Check the driver's front panel for the status of each led.
Leds acesos
Figure 1 - Front partial view of the driver
If the Sync Loss led is on, check the signal cables on the top panel of the equipment
If the Current Alarms LED is lit, access the alarm menu (Main Menu  System
Check the voltage, current and temperature measurements of the power drawer
Check the voltage measurements of the AC unit (MCCB) source located at the
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