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The cautions in schematic diagrams
I 1.
Safety significant parts
Product safety should be considered when a component replace-
ment is made in any area of the projector. Components indicated
by mark (
) in the parts list and the schematic diagram desig-
nate components in which safety can be of special significance. It
is, therefore, particularly recommended that the replacement of the
parts must be made by exactly the same parts.
I 2. The cautions in collation of parts.
DO NOT REPLACE OR ORDER RESISTOR AND CAPACITOR
PARTS FOLLOWING THE SPECIFICATIONS SHOWN IN THE
SCHEMATIC DIAGRAMS.
Always check for the correct specifications in the parts list, espe-
cially for critical component marked (
must be given to critical components. Specification of capacitor
and resistors will be shown with coded symbols, reading code
symbols following the chart and notes. Some capacitor and resis-
tors will be shown directly with values and no other information.
Detailed information on each capacitor and resistor will be shown
in the list.
I 3. Reading of parts.
I 4.
). Special attention
-57-
Read resistor codes as follows:
1. All resistance values are indicated in ohms:
K=1,000.
M=1,000,000.
2. Wattage, material and tolerance codes can see it on the chart of
next page.
Read capacitor codes as follows:
1. For capacitors identified with
values less than 1 are expressed in uF,
values more than 1 are in pF.
2. For capacitors (electrolytic) identified with
values are expressed in uF.
3. Rated voltage, material and tolerance codes can see it on the
chart of next page.
Risk of electric shock
HOT CIRCUIT IS IDENTIFIED WITH THE LINE (
THE SCHEMATIC DIAGRAM.
The signal circuit and control circuit of this projector are insulated
(COLD) from AC line by the insulation transformer inside the pro-
jector. But, assembly power, assembly PFC, assembly lamp bal-
last and assembly lamp are not insulated from AC line, and those
are "HOT." An insulation transformer should be connected in the
power line between the projector and the AC line before the service
of hot circuit is performed on the projector.
,
,
) IN
!
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