SECTION 2
SERVICING DIAGRAMS
1. CIRCUIT SYMBOLS AND SUPPLEMENTARY EXPLANATION
1-1. Solid Resistor Indication1-3. Capacitance Indication
Table 2-1-1Table 2-1-3
Symbol.....Carbon filmSymbol..... Electrolytic, Special electrolytic
..... Oxide metal film.....Ceramic, Film
UnitNone .....&UnitNone .....F
k..... k&?..... ?F
M..... M&n.....nF
ToleranceNone .....?5%p.....pF
F..... ?1%Rated voltageNone ..... 50V
K..... ?10%For other than 50V and electrolytic
Rated Wattage (1) Chip Partscapacitors, described in the Circuit
None .. 1/16WDiagram.
(2) Other PartsTolerance(1) Ceramic, plastic, and film capacitors
None .. 1/6WNone .. ?5% or more
Other than above, described in the Circuit(2) Electrolytic, Trimmer
Diagram.Tolerance is not described.
TemperatureNone .....SL
characteristicFor others, temperature characteristics are
(Ceramic capacitor) described.
100k
Rated WattageTolerance100p
TemperatureTolerance
Fig. 2-1-1characteristic
1-2. Inductor IndicationFig. 2-1-3
Table 2-1-21-4. Waveform and Voltage Measurement
UnitNone .....?? The various wave forms of the color circuit and
?..... ?Hvoltage measurement values are for when the service
m..... mH
ToleranceNone .....?5%color bar signal is received with ample reception and a
K..... ?10%proper image is received.
M..... ?20%
TypePL.....Peaking? Other various wave forms of circuits and voltage
Others display modelmeasurement values are for when general broadcasts
are normally received and will differ slightly depend-
ing on the broadcast contents. Use it as a standard
during servicing.
? All voltage values except the waveforms are expressed
10 min DC and measured by a digital voltmeter.
1-5. Precautions for Part Replacement
TypeTolerance
? In the schematic diagram, parts marked (ex.
F800) are critical part to meet the safety regulations,
Fig. 2-1-2so always use the parts bearing specified part codes
(SN) when replacing them.
? Using the parts other than those specified shall violate
the regulations, and may cause troubles such as
2-1operation failures, fire etc. |
ACEC
