Aloka ProSound Alpha 10, Service Manual, Page: 10 / 405

MN2-2008
SECTION 1
How to use this service manual
1 - 2
1-4 Contents of Each Section
SECTION 1 How to use this service manual
Describes the purpose of the Service Manual.
SECTION 2 PRECAUTIONS
Describes general precautions and preparations for maintenance service. Be sure to follow working
procedures if mentioned.
SECTION 3 BEFORE REPAIRING
Gives information peculiar to the equipment and care to be taken before starting repair work.
SECTION 4 PRINCIPLE OF SYSTEM OPERATION
Describes Specification of System, Principle of System, System Block Diagram, PCB Block diagram,
the explanation of each PCB Block Diagram, and Signal List. Gives the convenience of grasping flow
of major signals and mutual communication between units in the whole system.
SECTION 5 SCHEMATICS
Gives the cable connection diagram including all cables used, the circuit diagram of PCB equipped
with switches, and the circuit diagram of TV monitor and Power Supply unit.
SECTION 6 TROUBLESHOOTING
Describes precautions on actual repair work and shows the necessary tools and measuring instruments.
Also, includes many hints on primary diagnosis and measures to be taken in the field.
SECTION 7 ADJUSTMENT PROCEDURE
Gives guides of adjustments of PCBs and units which some PCBs need when they are replaced.
SECTION 8 PERFORMANCE CHECK
Describes the procedure of checking for proper operation after repair and provides the forms of check
sheet.
SECTION 9 DISASSEMBLING PROCEDURE
Disassembling Procedure Illustrates the disassembly and assembly of main components. Be sure to
follow working procedures if specified.
SECTION 10 PARTS LIST
Lists the mechanical parts and electrical part which replacement possibility are considered.