ViewSonic N2652w-1M, Service Manual

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3.Under the picture NTSC color bar of YPbPr source, select WHITE BALANCE
and press ENTER, The color warm will auto adjust. The act of EHITE
BALANCEL is completed when EHITE BALANCEL disappeared.
4.After adjusting, switch to FULL WHITE and check the value of each color.
Preset color for N2652WM
x=0.283±0.015 y=0.298±0.015
1.4.3 Power Consumption Check ( VGA MODE )
A. TIMING: 1360 x 768@60Hz
B. Pattern: 1010UPRIGHTNESS PATTERN
C. BRIGHTNESS=MAX,
CONTRAST=MAX.
D. The power that each MODE consumed is shown in Chart 1.
MODE
MAX POWER COMSUMED POWER LED COLOR
NORMAL
150W(max) for 27”
200W(max) for 32” GREEN
Stand-by
3 W (max) RED
Chart 1
1.4.4 Check the position of the picture displayed and phase auto adjusting (VGA MODE).
Depend on the TIMING of TIMING TABLE (TABLE 3) to switch MODE in order,
stay about 10 seconds each MODE, it can changed and stored automatically each
MODE. We can’t switch over to the next MODE until AUTO ADJUST disappears.
1.4.5 HDMI MODE FUNCTION TEST
A.DVI MODE: Depend on the TIMING of TIMING TABLE (TABLE 3 ) to check
MODE in order.
B.HDMI MODE: make sure the 480i, 480p, 720p, 1080i TIMING is right.
1.4.6 OSD FUNCTION TEST
A. Time: 1360x768@60Hz
B. Pattern: 16*12 pane
C. Make sure that Each FUNCTION has one right action.
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
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