1.4.6 Confirm OSD Function Performing
A. Timing: 640
×
480 @ 75Hz
B. Pattern: “GENERAL-1
C. Confirm that each function in the OSD works
D. After the confirmation is completed, the default setting of EEPROM INITIAL
AND WHITE BALANCE must be restored before shipping
1.4.7 DTV FUNCTION TEST
A. Select input source to DTV, Fig.3 will be shown.
Fig.3
1.4.8 YPbPr, S-VIDEO, AV, TV, DTV’S FUNCTION TEST
A. Input YPbPr, S-VIDEO, AV , TV, DTV’S signal and check.
B. Input USA air channel (TABLE 1) and USA CATV channel for TV channel.
C. Under YPbPr MODE, Make sure the 408i, 480P, 720P, 1080i is right.
1.4.9 AUDIO FUNCTION TEST
A. Audio input includes PC AUDIO IN, S-VIDEO/AV AUDIO IN and YPbPr AUDIO
IN.
B. Under PC MODE, input PC AUDIO signal, checks whether the action of AUDIO
IN is right.
C. Under S-VIDEO/AV MODE, input L/R AUDIO signal, checks whether the action
of AUDIO IN is right.
D. Under YPbPr MODE, input L/R AUDIO signal, checks whether the action of
AUDIO IN is right.
E. Under HDMI MODE, checks whether the action of AUDIO IN is right.
F. Under DTV MODE, checks whether the action of SPDIF is right.
G. AUDIO OUT FUNCTION TEST: Under all patterns except PC pattern, The Audio
output meets active extra speaker, examines whether the extra speaker makes the
sound.
1.4.10 EARPHONE FUNCTION TEST
Under PC MODE, input PC AUDIO signal, determines whether the action of INT
SPEAKER output is right. Meets earphone with the EARPHONE, Determined
whether the action of EARPHONE output is normal.
1.4.11.TV RECEIVING TEST:
A. Examines sound by ear, whether the sound does have mechanical resonation and
the electrical unusual sound, and image to sound disturbance.
B. Examines whether the sound does receive the image disturbance, Judgment basis:
Whether there is unusual sound, input signal LEVEL<=36dBu,and STEREO
SENSITIVITY is normal.
C. Adjustment attenuator, If the critical point of the change of the image signal to
noise ratio is under LEVEL<=60dBu,regards as normally.
D. Examines TV brightness; confirm whether DUAL FUNCTION is normal under
DUAL MODE: whether DUAL SENSITIVITY is normal when input signal is
under LEVEL<=36dBu.
E. Examines whether PAL color demodulation is normal by using DEM image;
whether STEREO SENSITIVITY is normal when input signal is under
LEVEL<=36dBu.
F. Examines whether DUAL FUNCTION is normal under DUAL MODE; whether
DUAL SENSITIVITY is normal when input signal is under LEVEL<=36dBu.
G. Examines whether the sound does receive the image disturbance, Judgment basis:
Whether there is unusual sound, input signal LEVEL<=36dBu,and STEREO
ViewSonic Corporation
Confidential - Do Not Copy
N
27
50w-
2G
24
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