Preventive Maintenance and Fault-finding
Page 5-6
Instruction Manual: evolution 5000 E5500 Mobile Contribution Encoder
ST.TM.E10033.3
5.4
Fault-finding
5.4.1
Fault-finding Philosophy
It is the objective of this chapter to provide sufficient information to enable
the operator to rectify apparent faults or else to identify the suspect
module, where possible. Some basic procedures are given to follow in the
event of a suspected MCE failure. It is assumed that fault-finding has
already been performed at a system level and that other equipment units
have been eliminated as the possible cause of the failure (If the MCE is
part of a system supplied by TANDBERG Television, see the relevant
System Manual).
WARNING…
DO NOT REMOVE THE COVERS OF THIS EQUIPMENT. HAZARDOUS VOLTAGES ARE PRESENT
WITHIN THIS EQUIPMENT AND MAY BE EXPOSED IF THE COVERS ARE REMOVED. ONLY
TANDBERG TELEVISION TRAINED AND APPROVED SERVICE ENGINEERS ARE PERMITTED TO
SERVICE THIS EQUIPMENT.
CAUTION…
Do not remove the covers of this equipment. Unauthorised maintenance or the use of non-approved
replacements may affect the equipment specification and invalidate any warranties.
This manual does not include any maintenance information or procedures,
which would require the removal of covers.
If the following information fails to clear the abnormal condition, call a
Service Engineer or contact Customer Services using the information given
in the preliminary pages of this manual.
5.4.2
Preliminary Checks
Always investigate the failure symptoms fully, prior to taking remedial
action. Fault diagnosis for the equipment operator is limited to the
following tasks, since the operator should NOT remove the covers of the
equipment:
1.
Monitor the equipment status using the display screen error messages.
2.
Check the front panel Power LED. If this is not lit:
a)
Replace the fuse in the power connector at the rear panel (see
Chapter 2, Section 2.4.2 User Accessible Fuse Replacement).
NOTE…
Only replace the fuse once. If it blows again contact Customer Services.
b)
Replace external equipment, power source and cables by
substitution to check their performance.
3.
Check that the MCE Base Board 3ASI (Motherboard) and modules are
all firmly seated in the chassis. See Chapter 4, Figure 4.3 for the
position of the Base Board 3ASI (Motherboard) and modules.
4.
Check that the equipment has been correctly installed (see Chapter 2,
Installing the Equipment).
