FAULT ISOLATION & REPAIR PROCEDURE

IMPORTANT: READ THE  DESCRIPTION & OPERATION SECTIONS BEFORE ATTEMPTING ANY FAULT ISOLATION OR REPAIR PROCEDURE

Configured in a boxed flow chart format, it represents repetitive faults encountered by our own Service Technicians. Each fault is accompanied by a series of boxes which will ask you to check a particular part of the equipment. After you have carried out the check a question is asked (refer to Fig. 1).

INTERMITTENT LINE SYNC

From the result of the question you can then answer YES or NO.

If the answer is NO (as in this case) you must move onto the next box and carry out the next check.

If the answer is YES. the next box will be (refer to Fig. 2).

Further into the Fault Isolation Procedure you may be asked to check a component: for example (refer to Fig. 3). In this case the best method of checking the Tripler Module would be substitution for a serviceable Tripler Module. This would establish very quickly the condition of the Tripler Module, in relation to the fault.

When all the known fault causes have been effected, the chart will be terminated by a box reading: (refer to Fig. 4).

If you have reached this stage you should use the circuit diagram and items of test equipment and adopt a logical method of fault isolation and repair.

NO PICTURE - LINE OSCILLATING

BURST MODE

LINE WHISTLE

INTERMITTENT LINE SYNC

FRAME COLLAPSE

MONITOR DEAD - NEON ILLUMINATED

MONITOR HAS NO PICTURE

MONITOR DEAD - NEON NOT ILLUMINATED