Sampo SC-29FAS, Service Manual

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2.10 PS line polarities test
This test only the machines which will sell to NAFTA should be done.
Test method
：
Connect as drawing below
：
DX 2.2k
Power Supply jack M
TO F801
Plug the card power connector plugs to Power Supply jack M, and use multimeter pen touch
F801 random pin, then LED DX should luminescence and clew with sound, otherwise it is
unqualified.
2.10 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
：
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.
Type Power Standby power
25” ?W 10W
29” ?W 10W
34” ?W 10W
DC Power Supply
9V
- +
Sound clew equipment
14