Schematic Diagrams/ Cba's And Test Points - Sharp LC-20AV1U Service Manual

SCHEMATIC DIAGRAMS / CBA'S AND TEST POINTS
NOTE: CBA AND PWB MEANS PRINTED WIRING BOARD.
Standard Notes
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 special 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.
Note:
1. Do not use the part number shown on these drawings 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 (K=10
3. Resistor wattages are 1/4W or 1/6W unless otherwise specified.
4. All capacitance values are indicated in µF (P=10
5. All voltages are DC voltages unless otherwise specified.
Note of Capacitors:
ML --- Mylar Cap. PP --- Metallized Film Cap.
Temperature Characteristics of Capacitors are noted with the following:
B --- ±10%
CH --- 0±60ppm/°C
Tolerance of Capacitors are noted with the following:
Z --- +80~-20%
Note of Resistors:
CEM --- Cement Res.
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
-6
CSL --- +350~-1000ppm/°C
MTL --- Metal Res. F --- Fuse Res.
Electrolytic Capacitor
(Top View)
E C B
(Top View)
E C B
3 , M=10 6 ).
µF).
SC --- Semiconductor Cap.
Schematic Diagram Symbols
PNP Transistor
PNP Digital Transistor
8-1
L --- Low Leakage type
Digital Transistor
LCVSC