Sharp 20LK61M Service Manual - Page 14

Description Of Schematic Diagram, Waveforms

Page 14 highlights

20LK31M 20LK61M DESCRIPTION OF SCHEMATIC DIAGRAM NOTES: 1. The unit of resistance "ohm" is omitted. (K=kΩ=1000Ω, M=MΩ) 2. All resistors are 1/16 watt, unless otherwise noted. 3. All capacitors are µ F, unless otherwise noted. (P=pF=µµF) 4. (G) indicates ±2% tolerance may be used. 5. indicates line isolated ground. VOLTAGE MEASUREMENT CONDITIONS: 1. All DC voltages are measured with DVM connected between points indicated and chassis ground, line voltage set at 120V AC and all controls set for normal picture unless otherwise indicated. 2. All voltages measured with 1000µ V B & W or Color signal. WAVEFORM MEASUREMENT CONDITIONS: 1. Photographs taken on a standard gated color bar signal, the tint setting adjusted for proper color. The wave shapes at the red, green and blue cathodes of the picture tube depend on the tint, color level and picture control. 2. indicates waveform check points (See chart, waveforms are measured from point indicated to chassis ground.) å AND SHADED ( ) COMPONENTS = SAFETY RELATED PARTS. ' MARK= X-RAY RELATED PARTS. This circuit diagram is a standard one, printed circuits may be subject to change for product improvement without prior notice. WAVEFORMS 14

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14
20LK31M
20LK61M
DESCRIPTION OF SCHEMATIC DIAGRAM
NOTES:
1.
The unit of resistance "ohm"
is omitted.
(K=k
=1000
,
M=M
)
2.
All resistors are 1/16
watt, unless
otherwise noted.
3.
All capacitors are μ F, unless otherwise noted.
(P=pF=μμF)
4. (G)
indicates ±2% tolerance may be used.
5.
indicates line isolated ground.
VOLTAGE MEASUREMENT CONDITIONS:
1.
All DC voltages are measured with DVM connected
between points indicated and chassis ground, line
voltage set at 120V AC and all controls set
for
normal
picture unless otherwise indicated.
2.
All voltages measured with 1000μ V B & W or Color
signal.
WAVEFORM MEASUREMENT CONDITIONS:
1.
Photographs taken on a standard gated color bar
signal, the tint
setting adjusted for proper color. The
wave shapes at the red, green and blue
cathodes of
the picture tube depend on the tint, color level and
picture control.
2.
indicates waveform check points (See chart,
waveforms are measured
from
point indicated to
chassis ground.)
å
AND SHADED (
)
COMPONENTS
= SAFETY RELATED PARTS.
'
MARK= X-RAY RELATED PARTS.
This circuit diagram is a standard one, printed circuits
may be subject to change for product improvement
without prior notice.
WAVEFORMS