Sharp Projector Part Projected - Page 1
Forum section: electronics / general

author: sonicj
author_rank: Frequent Contributor
timestamp: January 11, 2012, 01:53:59 am
content: I was hoping someone could shed some light on ID'ing this component that exploded inside a Sharp XR30X DLP projector. I believe this board controls the logic for switching stuff on and off like striking the lamp, checking interlocks, monitoring temps, enabling the upper board etc, but im not certain. The part in question is a 14 pin JRC something (op-amp?). Two chunks blew out of the top of the package. I was able to locate the lower half, but the upper half with the part number has gone MIA. All I can make out is the 2 and a number with a curve at the top like 2,3,8,9,0 as the last number. I believe the bottom num is manufacturing info like date or run number, etc. The JRC component above it is a NJM2904 which is a 32V (or ±16V) single supply, dual op-amp. Would a quad op-amp with similar specifications be a reasonable guess as to a suitable replacement for the mystery part? Thanx!-sj

author: Psi
author_rank: Super Contributor
timestamp: January 11, 2012, 02:47:46 am
content: There are people on ebay selling qpwbne boards, not your one, but if they have other sharp boards they might be able to get your one.I've had a good search for a free to download service manual or parts list but couldn't find much.

author: kaz911
author_rank: Super Contributor
timestamp: January 11, 2012, 07:07:32 am
content: You could try asking if anyone on AVSForum (or other projector forum with XR30 owners) had theirs apart... and let them get you the component id.

author: sonicj
author_rank: Frequent Contributor
timestamp: January 11, 2012, 07:13:50 am
content: yea, i tried every google trick i know to find a service manual.... no luck! i'm not even sure that sharp publishes a proper service manual anymore. the authorized repair centers probably tell you the "power supply module" is bad and that it'll be $267 + labor.i may just have to wait until the right deal comes along on eBay... i think i saw some boards for the xr-10x for like $100 but nothing for the xr-30x. i can likely find a complete projector with bad bulb for those kinda prices.-sj .

author: Psi
author_rank: Super Contributor
timestamp: January 11, 2012, 07:15:00 am
content: Quote from: kaz911 on January 11, 2012, 07:07:32 amYeah, that's a good idea. Also the guys on AVSForum are always tuning up their projectors using service mode settings. So they will have service manuals.I did find this partslist for a XR10X-L which has a NJM2902 (quad version of NJM2904)http://fileshare.eshop.bg/download.php?fileid=57979But i couldn't see any other part in the list that fits the number of your blown IC.

author: sonicj
author_rank: Frequent Contributor
timestamp: January 11, 2012, 07:24:50 am
content: Quote from: kaz911 on January 11, 2012, 07:07:32 amyea, that thought had crossed my mind... i know some folks have had the xr-10x open for led mods, but not much chatter about the xr-30x. the way the board is seated though (soldered in at 90°) and covered up by large caps, it would take a lot of effort for someone just to read off the part number. i may still do that though.... can't hurt to ask!-sj

author: sonicj
author_rank: Frequent Contributor
timestamp: January 11, 2012, 07:47:14 am
content: Quote from: Psi on January 11, 2012, 07:15:00 ami bet thats it! i've seen pics of the wrong half of the 10x board and it looks almost almost identical to mine. same part numbers on stuff like the opto-isolators, just different parts count. the part number of my busted component starts with a 2 and ends with something round at the top (like a 2). ground pin matches the datasheet!im ordering one from digikey! whats the worts that can happen? i break it?-sj*edit - forgot to say thanks! Thanks!

author: amspire
author_rank: Super Contributor
timestamp: January 11, 2012, 07:58:13 am
content: It looks pretty easy to get a sharp service manual for $10 to $12, but you should be able to get it free.I will add some links at the end. One option is to subscribe to a Spanish sitehttp://www.clubdediagramas.com. They have quite a good range of service manuals, and with a subscription you can download any of them, including the one for the Sharp. I am not subscribed now, but I have been in the past. There is a free subscription which is limited, but should get you the manual.translate.google.comorhttp://babelfish.yahoo.com/can help you with a bit of translation, if you need it.http://www.clubdediagramas.com/archivo/proyectores-a34/sharp-m2067/xr30s-xr30x-xgf210xpdf-f16648.htmlHere are some other links:http://www.manualszone.com/de/SHARP-service-manuals/65435-SHARP-XR30X-service-manual.htmlhttp://www.tradebit.com/filedetail.php/127840971-sharp-xr-30x-30s-xg-f210-servicehttp://www.service-manual.net/ashop/catalogue.php?cat=281&exp=&resultpage=65

author: Psi
author_rank: Super Contributor
timestamp: January 11, 2012, 08:16:40 am
content: paying for the service manual, it just ain't right

author: sonicj
author_rank: Frequent Contributor
timestamp: January 11, 2012, 08:38:19 am
content: Quote from: amspire on January 11, 2012, 07:58:13 amawesome! found it! i signed up for the first link but they wanted $. so i googled the filename and found herehttp://diagramasde.com/blog/65872/XR30S-XR30X-XGF210X-pdf-Sharp-XR-30S-XR-30X-XG-F210X.htmlhad to sign up to download but thats a small price to pay.i'll bookmarking these for future reference. thanks!Quote from: Psi on January 11, 2012, 08:16:40 ammy golf cart requires two service manuals since they were too lazy/cheap to remake the manual to reflect the changes between model years... double whammy!-sj