Mitsubishi Electric SD206U Service Manual page 11

ELECTRICAL ADJUSTMENTS
Necessary equipment and connecting
Connect the following equipment as shown in the right fi gure.
• This projector
• Personal computer
• Monitor for personal computer
• VGA cable
• Signal generator (equivalent to VG-812)
• SVGA_WRGB_64scale signal (for C/W delay adjustment)
• XGA_WRGB_64scale signal (for C/W delay adjustment)
Test signal
• SVGA signal (Vertical frequency 60 Hz)
• XGA signal (Vertical frequency 60 Hz)
• NTSC (480i) signal (Vertical frequency: 59.94 Hz)
The timing and patterns for the adjustment are as follows :
H Timing
HDW
HDISP
HBP
HP
HD signal
Program ROM : LC12 Ver. 1.8 (for SD206U)
Program ROM : LC6 Ver. 1.9
(for XD206U / XD206U-G)
Program Pattern
No.
29 White / black signal
30 SMPTE (White) *
* Though the signal generator supplies this signal
as a green signal, the projector receives it as
Y/C /C signal.
B R
Therefore, this signal is projected as a full white
SMPTE signal.
V Timing
VDW
VBP
VD signal
Timing of SVGA signal (Vertical frequency 60 Hz)
DOT-CLOCK [MHz]
HP [DOT]
HDISP [DOT]
HDW [DOT]
HBP [DOT]
Timing of XGA signal (Vertical frequency 60 Hz)
DOT-CLOCK [MHz]
HP [DOT]
HDISP [DOT]
HDW [DOT]
HBP [DOT]
Timing of NTSC (480i) signal (Vertical frequency 59.94 Hz)
DOT-CLOCK [MHz]
HP [DOT]
HDISP [DOT]
HDW [DOT]
HBP [DOT]
- 1 -
[ADC adjustment]
COMPUTER IN
terminal
Signal
generator
Projector
VGA cable
[C/W delay adjustment]
VGA cable
P e r s o n a l
Projector computer
COMPUTER IN
terminal
VDISP
VP
40.0 VP [H]
1056 VDISP [H]
800 VDW [H]
128 VBP [H]
88 Interlace
Signal polarity
65.0 VP [H]
1344 VDISP [H]
1024 VDW [H]
136 VBP [H]
160 Interlace
Signal polarity
13.5 VP [H]
858 VDISP [H]
720 VDW [H]
64 VBP [H]
58 Interlace
Signal polarity
Monitor for
p e r s o n a l
computer
628
600
4
23
---
HD :+, VD : +
806
768
6
29
---
HD :-, VD : -
525
480
3
14
Interlace
HD :nothing
VD : nothing
Sync on green : -