Hitachi DV-PF7E Wartungshandbuch Seite 84

S
SCHEMATIC, WIRING DIAGRAMS
S-1 Schematic Diagrams / CBA's and Test Points
Standard Notes
WARNING
Many electrical and mechanical parts in this chassis
have special characteristics. These characteristics
often pass unnoticed and the protection afforded by
them cannot necessarily be obtained by using
replacement components rated for higher voltage,
wattage, etc. Replacement parts that have these spe-
cial safety characteristics are identified in this manual
and its supplements; electrical components having
such features are identified by the mark " ! " in the
schematic diagram and the parts list. Before replacing
any of these components, read the parts list in this
manual carefully. The use of substitute replacement
parts that do not have the same safety characteristics
as specified in the parts list may create shock, fire, or
other hazards.
Capacitor Temperature Markings
Capacity
Mark
change rate
(B) ±
10%
(F) +30 - 80%
(SR) ±
15%
(Z) +30 - 80%
Capacitors and transistors are represented by the following symbols.
CBA Symbols
(Top View) (Bottom View)
+
(Bottom View)
Transistor or Digital Transistor
E C B
(Top View)
NPN Transistor
E C B
(Top View)
NPN Digital Transistor
E C B
Standard Temperature
temperature range
20°C -25~+85°C
20°C -25~+85°C
20°C -25~+85°C
20°C -10~+70°C
Electrolytic Capacitor
(Top View)
E C B
(Top View)
E C B
Notes:
1. Do not use the part number shown on these draw-
ings for ordering. The correct part number is
shown in the parts list, and may be slightly different
or amended since these drawings were prepared.
2. All resistance values are indicated in ohms
3 6
(K=10 , M=10 ).
3. Resistor wattages are 1/4W or 1/6W unless other-
wise specified.
4. All capacitance values are indicated in µF
-6 µF).
(P=10
5. All voltages are DC voltages unless otherwise
specified.
6. Electrical parts such as capacitors, connectors,
diodes, IC's, transistors, resistors, switches, and
fuses are identified by four digits. The first two dig-
its are not shown for each component. In each
block of the diagram, there is a note such as
shown below to indicate these abbreviated two dig-
its.
Schematic Diagram Symbols
PNP Transistor
PNP Digital
Transistor
S-1
Digital Transistor