3
Shield Bag
Plastic Cover
Shield Bag
Conductive
Sponge
Machine
Frame
Clip
Wrist
Strap
P.C.Board
WARNING
WARNING
WARNING
CAUTION
CAUTION
CAUTION
Lock the keys when you
turned off the Power switch.
When replacing parts or performing other such main
-
tenance operations, turn the power off unless it is
necessary to keep the power on. Also, lock the Power
switch before doing service operations.
-
This prevents another person from turning on the Power
switch without knowing that you are doing service opera
-
tions.
-
There are three holes for keys. If more than one person
does service operations at the same time, each person
should lock the Power switch separately.
Beware of rotat
-
ing objects.
Do operations
alone.
Wait ten second
before turning on
the power again.
Use the correct
parts.
Prepare a special
wrench when you
replace the safety
switches
If you need to do service operations while operat
-
ing the machine, be extremely cautious of rotating
objects such as belts and pulleys etc. Otherwise,
it may cause the severe personal injury.
Always do operations alone when operating
the machine. This manual is written on the
assumption that operations will be done by
one person.
When turning the power back on, wait for
approximately ten seconds after turning the
power off before turning it on again.
When replacing parts, use the parts shown
in the parts book unless commercially avail
-
able parts with exactly the same functions
and performance can be obtained.
Special screws are used to mount the safe
-
ty switches, which detects that the cover is
opened or closed. This prevents the users
from removing the safety switches.
Beware
of static
electricity
Even an small amount of static electricity that it can
-
not be felt by people will damage the board or ROM.
Exercise caution on the following points when han
-
dling the board or ROM.
Keep Board in a
shield bag.
Do not put Board and ROM on the machine, especially on
the plastic cover. (No problem on the conductive plate.)
And keep the Board and ROM away from the insulators.
Insulators: Plastic, form polystyrene,
chemical fiber fabric, dry paper, etc.
Put the ROM on a
conductive sponge
and keep in a shield
bag.
When replacing the Board and ROM, or setting the DIP
switches and volumes on the Board, wear a wrist strap,
and connect the clip to the machine frame (not painted
surface).
●The description in this page is common issue in the Horizon products.
The description unrelated to this machine may be contained.
CAUTION
III Cautions when undertaking service operations - Part 1
Summary of Contents for PC-P430
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Page 7: ...General 1 PC P430 7 1 General PC P430 ...
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Page 13: ...General 1 PC P430 13 This page is intentionally left blank ...
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Page 15: ...Troubleshooting 2 PC P430 15 2 Troubleshooting PC P430 ...
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Page 29: ...Troubleshooting 2 PC P430 29 This page is intentionally left blank ...
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Page 31: ...Descriptions of Mechanisms 3 PC P430 31 3 Descriptions of Mechanisms PC P430 ...
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Page 48: ...3 Descriptions of Mechanisms PC P430 48 This page is intentionally left blank ...
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Page 51: ...Electrical Parts Location 4 PC P430 51 4 Electrical Parts Location PC P430 ...
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Page 59: ...Circuit Boards 5 PC P430 59 5 Circuit Boards PC P430 ...
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Page 67: ...Circuit Boards 5 PC P430 67 This page is intentionally left blank ...
Page 68: ...5 Circuit Boards PC P430 68 This page is intentionally left blank ...
Page 69: ...Electrical Circuits 6 PC P430 69 6 Electrical Circuits PC P430 ...
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Page 73: ...Electrical Circuits 6 PC P430 73 This page is intentionally left blank ...
Page 74: ...You can download the latest manual http hip horizon co jp Anytime and Anywhere END SHEET ...