Teac 3290I, Руководство по обслуживанию

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TCL-Thomson Electronics R&D Center (Shen
’
Zhen Lab)
Page 7 of 12
TCL-Thomson Electronics
These drawings and specifications are the property of TCL-Thomson Electronics and shall not be reproduced or copied or
used as the basis for the manufacture or sale of apparatus or devices without permission.
otherwise it is unqualified.
2.11 PS power test
Equipment requirements : Wattmeter
Test method
：
a. Input more than 60dB color bar signal, audio 1K Hz, 100% modulation.
b. Brightness and contrast are maximum, adjust the volume to make the audio output
power at 0.5W.
c. Connect the wattmeter to test power consumption of Power Supply.
d. Switch the set to standby mode, and then measure the power consumption of
Power Supply again.
It should satisfy request below
：
Type Power Standby power
25” ?W 10W
29” ?W 10W
34” ?W 10W
2.12 High voltage and Ib value limit test( random test )
Equipment requirements
：
Multimeter, High Voltage stick
Beam Current Meter
Input signal type
：
A 60dB white pattern signal.
Test method
：
a. Connect the EHT-meter across the anode and aquadag of the CRT.
b. Connect a beam current meter between the anode of picture tube and EHT-cable
of FBT.
c. Measure the EHT-voltage at zero beam current (I
beam
= 0
µ
A).
d. Subsequently, measure the EHT-voltage at respective I
beam(s) .
It should satisfy request below
：
Beam current
EHT-voltage (KV)
I
b
= 50
µ
A
I
b
=50
µ
A&1200
µ
A
2.13 Heater voltage test ( random test )
Equipment requirements : True RMS Voltmeter
Input signal type
：
Philips test card ( from 1 mV rms
（
60dBuV
）
to 50 mV rms )
Test method
：
a. Connect the true RMS voltmeter between the heater and grand.
b. Adjust the brightness and contrast to maximum .
c. Then, test the heater voltage . It may be Vrms
2.14 Main function test (eg, NICAM, BTSC, TELTEXT and etc.)
NICAM test standard please reference
BTSC test standard please reference