![background image](http://html1.mh-extra.com/html/viewsonic/va712b-2/va712b-2_service-manual_1020963027.webp)
- 27 –
ViewSonic Corporation
5. Adjust Procedure
5.1 ADJUSTMENT CONDITIONS AND PRECAUTIONS
1. Approximately 30 minutes should be allowed for warm up before proceeding.
2. Adjustments should be undertaken only on those necessary elements since most of them
have been carefully preset at the factory.
3. ESD protection is needed before adjustment.
5.2 MAIN ADJUSTMENTS
NO. FUNCTIONS DESIGNATION
1. White Balance Function Key
2. Geometry Function Key
5.3 ALIGNMENT PROCEDURES
Approximately 30 minutes should be allowed for warm up before proceeding
White-Balance adjustment.
1. Adjust of White Balance
1.)How to do the Chroma-7120 MEM .Channel setting
A
、
Reference to Chroma 7120 user guide
B
、
Use “
SC
” key and “
NEXT
” key to modify xyY value and use “
ID
” key to modify the
TEXT description Following is the procedure to do white-balance adjust
2.)Setting the color temp. You want
A
、
MEM.CHANNEL9 ( 9300 color):
9300 color temp. parameter is Wx = 0.283
±
0.02;Wy = 0.298
±
0.02;
Y > 190 cd/m
2 ,
B
、
MEM.CHANNEL10 ( 6500 color):
6500 color temp. parameter is Wx = 0.313
±
0.02;Wy = 0.329
±
0.02;
Y > 260 cd/m
2,
C
、
MEM.CHANNEL 11 ( 5400 color):
5400 color temp. parameter is Wx = 0.335
±
0.02;Wy = 0.350
±
0.02;
Y > 210 cd/m
2,
D
、
MEM.CHANNEL 12 ( 5000 color):
5000 color temp. parameter is Wx = 0.346
±
0.02;Wy = 0.359
±
0.02;
Y > 210 cd/m
2
E
、
MEM.CHANNEL13 ( SRGB color):
SRGB color temp. parameter is Wx = 0.313
±
0.02;Wy = 0.329
±
0.02;
Y > 220 cd/m
2,
Summary of Contents for VA712b-2
Page 11: ...11 ViewSonic Corporation 3 Front Panel Function Controls And Indicators...
Page 18: ...18 ViewSonic Corporation 4 2 POWER BLOCK FUNCTION DESCRIPTION Inverter Block Function...
Page 19: ...19 ViewSonic Corporation Power Block Function...
Page 26: ...26 ViewSonic Corporation...
Page 42: ...42 ViewSonic Corporation 3 3 DDC Key In Procedure Sep1 Select and execute DDC Key In program...
Page 43: ...43 ViewSonic Corporation Sep2 Inpute the S N and execute Enter...
Page 44: ...44 ViewSonic Corporation...
Page 45: ...45 ViewSonic Corporation Sep3 Key the Enter and write the data...
Page 46: ...46 ViewSonic Corporation Sep4 If ddc program OK and show data compare ok...
Page 47: ...47 ViewSonic Corporation 6 Trouble Shooting Flow Chart...
Page 66: ...66 ViewSonic Corporation 8 Exploded Diagram And Spare Parts List...
Page 67: ...67 ViewSonic Corporation...
Page 68: ...68 ViewSonic Corporation 5 7 Packing For Shipping...
Page 72: ...72 ViewSonic Corporation Picture 7 Picture 8 Picture 9 Picture 10 Picture 11 Picture 12...
Page 73: ...73 ViewSonic Corporation Picture 13 Picture 14 Picture 15...
Page 74: ...74 ViewSonic Corporation Picture 16 Picture 17 Picture 18 Picture 19 Picture 20...
Page 75: ...75 ViewSonic Corporation 10 Block Diagram...
Page 84: ...84 ViewSonic Corporation 12 PCB Layout Diagram 12 1 MAIN BOARD PCB TOP VIEW...
Page 85: ...85 ViewSonic Corporation...
Page 86: ...86 ViewSonic Corporation 12 2 MAIN BOARD PCB BUTTON VIEW...
Page 87: ...87 ViewSonic Corporation 12 3 KEYBOARD TOP VIEW 12 4 KEYBOARD BUTTON VIEW...
Page 88: ...88 ViewSonic Corporation 12 5 POWER PCB TOP VIEW...
Page 89: ...89 ViewSonic Corporation 12 6 POWER PCB BUTTON VIEW...
Page 90: ...90 ViewSonic Corporation 12 6 AUDIO PCB TOP VIEW BUTTON VIEW...