Sharp 37GQ-20S, Руководство по обслуживанию

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13
37GQ-20S
37GQ-21S
WAVEFORM MEASUREMENT CONDITION:
Colour bar genetator signal of 70 dB from RF input.
1. The unit of resistance «ohm»is omitted (K=1000
ohms. M= Megaohm).
2. All resistors are 1/8 watt. unless otherwise noted.
3. All capacitors are
µ
F, unless otherwise noted (P=
µµ
F).
4. The capacitor with Part No. RC-FZ9XXXBMNJ is
designed to with stand 63V.
NOTE:
SERVICE PRECAUTION:
DESCRIPTION OF SCHEMATIC DIAGRAM
SAFETY NOTE:
1. DISCONNECT THE AC PLUG FROM THE AC
OUTLET BEFORE REPLACING PARTS.
2. SEMICONDUCTOR HEAT SINKS SHOULD BE
REGARDED AS POTENTIAL SHOCK HAZARDS
WHEN THE CHASSIS IS OPERATING.
IMPOTANT SAFETY NOTE:
PARTS MARKED WITH « » ( ) ARE
IMPORTANT FOR MAINTAINING THE SAFETY
OF THE SET. BE SURE TO REPLACE THESE
PARTS WITH SPECIFIED ONES FOR
MAINTAINING THE SAFETY AND PERFORMAN-
CE OF THE SET.
!
CAUTION
This circuit diagram is original one,
therefore there may be slight difference
from yours.
1 2 3 4 5
6 7 8 9 10
11 12 13 14 15
CH1 100V A 2
µ
s 200V VERT
CH1 FREQ = 100KHz
CH1 P-P = 504 V
CH1 100V A 2
µ
s 100V VERT
CH1 FREQ = 100KHz
CH1 P-P = 472 V
CH1 2V A 10
µ
s -1.00V VERT
CH1 FREQ = 15.6KHz
CH1 P-P = 8.56 V
CH1 200V A 10
µ
s 200V VERT
CH1 FREQ = 15.6KHz
CH1 P-P = 1.00 kV
CH1 1V A 10
µ
s 1.00V VERT
CH1 FREQ = 15.6KHz
CH1 P-P = 5.40 V
CH1 1V A 5ms 2.50 V VERT
THE AREA ENCLOSED BY THIS LINE ( )
IS DIRECTLY CONNECTED WITH AC MAINS
VOLTAGE.
WHEN SERVICING THE AREA, CONNECT AN
ISOLATING TRANSFORMER BETWEEN TV
RECEIVER AND AC LINE TO ELIMINATE
HAZARD OF ELECTRIC SHOCK.
CH1 FREQ = 50.0 Hz
CH1 P-P = 4.80 V
CH1 500mV A 5ms 1.00V VERT
CH1 FREQ = 50.0 Hz
CH1 P-P = 1.48 V
CH1 500mV A 5ms -500mV VERT
CH1 FREQ = 50.0 Hz
CH1 P-P = 1.94 V
CH1 10V A 5ms -10.0mV VERT
CH1 FREQ = 50.0 Hz
CH1 P-P = 38.4 V
CH1 1V A 5ms 2.50 V VERT
CH1 FREQ = 1.00 KHz
CH1 P-P = 4.44 V
CH1 5V A 500
µ
s 0.0 V VERT
CH1 FREQ = 412 Hz
CH1 P-P = 16.8 V
CH1 500mV A 10
µ
s TVFLD 25
CH1 FREQ = 15.6 KHz
CH1 P-P = 1.84 V
CH1 20V A 10
µ
s 150 V VERT
CH1 FREQ = 15.6 KHz
CH1 P-P = 74.4 V
CH1 20V A 10
µ
s 150 V VERT
CH1 FREQ = 15.6 KHz
CH1 P-P = 72.8 V CH1 FREQ = 15.6 KHz
CH1 P-P = 70.4 V
CH1 20V A 10
µ
s 150 V VERT
gnd gnd
gnd
gnd
gnd
gnd
gnd
gnd
gnd
gnd
gnd
gnd
gnd gnd gnd