Just what's inside a 'G' series JVC D-ILA? - Page 2

Thanks for the info videobruce . I can finally figure out the lamp time on my set, I have 1958hrs on my lamp so far hopefully it will go for another 2000hrs or more.

videobruce thanks for the info on the Jvc service menu.

Question do you have a copy or any more info on where the R, B cut are to adjust the greyscale.

I see on 030 to 032 adjustments for drv.

I should be getting my Jvc this week and wonder if I should order a service manul and if they dont have it the older 70G886 I should be able to use as a guideline.

I have been adjusting the greyscale since 1997 on my tv and friends using back then a laser disc video essential and then dvd version and then now Dve.

I usually just adjust the color trims for greyscale, convergence, overscan and centering.

Videobruce would you mind emailing me a copy ? I know usually I write down the numbers on a piece of paper on paper clip it to the manual before I start playing with any adjustments.

I have found that all the tv that I have adjusted myself Toshiba, Sony, and Hitachi there are 5 adjustments.

3 for the lower/darker scenes and then 2 more for bright scenes. You usually need both as on dark scenes the tv might push toards on color and on bright scenes another.

I see only 3 adjustment and that would mean it affect only the dark side of the greyscale.

you are right me from old school.

But even on the new Toshiba DLp they have the same adjustment right at the start and I even adjusted on at Future Shop They have 3 cuts for dark and 2 drv for bright.

I was looking on the 52HMX85 and it pushed a bit too blue even on movie mode the blacks were drak blue so I trim the B cut two points and the picture was much better.

With a good greyscale image I could have done more.

Yep, that's right.
I quickly checked it using calc.exe. Just set it to scientific mode, then hexidecimal mode (F5) input 017a, and hit F6 to switch to decimal mode, and 17a will be automatically converted to decimal 378.

I checked it again last night and sure enough the lamp time numbers are incrementing. It does not do it in real time, but rather updates the registers on the next power on/off?? Now if I could just get a handle on all those other register code names like 5i CB OF, RT CL GA, LOW SEP, etc. Videobruce, do they explain than in the CD you got???

Videobruce:

After adjusting r,g, b, last week I went back and check my settings and I think they reset. What do yo use to save your settings? And what also is odd in now I have NG's under my self check. Any ideas???

Set: JVC 52G786

self Check: SYNC M:NG S:NG
TUN:NG9
HDMI NG6

Hello:

Ok was able to reset (I THINK). But still have SYNC M:NG AND S:NG. Any ideas? Also is there a master reset to reset the service menu settings back to default?

I have those also, I think you need to send the set proper test signals to get a OK on every thing listed.

Here are my readings. 52g786. changing input signals, 480p, 720p 1080i no change

LOB OK FAN OK
SYNC M:NG S:NG HD OK
TIM OK
MSM OK DIG OK
MEM OK AVSW OK
YC OK AIO OK
TUN NG3 GCR OK
IP OK RGB OK
DVI OK HDMI NG2

DVI shows OK

the64gto,

Thanks for digging out the hour meter on the Z series. I checked mine and it was within a 100 hours of what I estimated. I assume this gets zeroed out when you do the reset. I noticed D073 & 74 had the same values in them. Now I'm wondering if there is a total accumulated hours. One that's not reset.

What might seem confusing at first is all the numbers, but the register is showing the same value in three different formats. Decimal, Hexadecimal and binary number notation. Just checked mine again D070 = 001 01 0000 0001 and D071= 233 E9 1110 1001. So taking the easy way 256+233=489. I'll monitor the 73 & 74 registers.

I checked mine today and the 70 & 71 registers had updated as expected but 73 & 74 still had the same values as yesterday when they matched 70 & 71.

Thanks to videobruce for posting the procedure for the G series. It was not in the Z series manual but appears to work the same.

great info

Hello VideoBruce,
how do you know so much about these HDs?
I have a couple of issues with my hdila you might be able to help me.

H

I also need to know this. My entire screen needs to move down about a half inch or so. I don't need to align the RGB, but in fact need everything to move. In the user menu you can adjust the screen up or down, but it only moves one notch and that is not enough. Is there any way to move it more through the service menu?