december08 - Slot Techslot-tech.com/members/magazine/lores/december08.pdf · James Borg International Contributor Martin Dempsey Slot Tech Magazine is published monthly by Slot Tech

December 2008Slot Tech MagazinePage 4

Randy Fromm's

Slot Tech Magazine

EditorRandy Fromm

Technical WritersTed Befus, Kevin Noble,Herschel W. Peeler, PatPorath, Vic Fortenbach,

James Borg

International ContributorMartin Dempsey

Slot Tech Magazine is publishedmonthly bySlot Tech Magazine1944 Falmouth Dr.El Cajon, CA 92020-2827tel.619.593.6131 fax.619.593.6132e-mail [email protected] the website at slot-techs.com

SUBSCRIPTIONSDomestic (North America) 1 year - $60.002 years - $120.00International1 year - $120.002 years - $240.00

Copyright 2008 under the UniversalCopyright Convention. All rights re-served.

Slot Tech Maga-zine

December 2008

Inside Slot Tech Magazine

Page 4 - EditorialPage 6 - Out With the OldPage 14 - More on Monitors - SMPS Operation and TroubleshootingPage 18 - The Great Big ArrowPage 23 - Quick and Simple Repairs #45Page 30 - TechFest 18 Review (sort of)Page 34 - Subscriptions and Order Form

Slot Tech Magazine is anofficial publication of

Randy Fromm

Dear Friends,

What had started out as a simple research project has revealed somethinginteresting. I asked James Otto, Bench Tech for the Beau Rivage Casino, ifhe could help me with some research. I wanted to find out exactly howmuch power was consumed by the various makes and models of slotmachines on today’s gaming floor. I thought it would be informative in orderto balance out the loads when installing banks of machines. Just howmany can you put on one power strip or one circuit-breaker? The results arepublished below.

As a surprise bonus (and a tip o’ the hat to Mr. Otto’s attention to detail inhis report) there is something that just jumps off the page at you. If youare looking for an immediate and substantial cost savings for your casino,you can begin right now by looking into using LEDs for general illuminationin your slot machines. Look at the yellow highlighted area below. Close to50 watts (49.2) was saved in one S2000 alone by using LED lighting. Whenyou do the math, that’s 438 kilowatts per year for 24/7 operation. I don’tknow what you pay for power but DOE reports a US average of around adime per kWh. This figure is somewhat skewed by Hawaii at .32/kWh.Regardless, you can save $40-50 per year per machine. This does not eveninclude the almost total elimination of replacement costs for tubes andballasts as LEDs can go 50,000 hours MTBF and, unlike CCFLs, there areno ballasts to worry about.

Randy Fromm - Publisher

Slot Tech MagazineDecember 2008 Page 5


Slot Tech Feature Article

Since my last articletalked about replac-ing your older PGI

equipment with the newSPC I guess its only fittingto put out an article toshow you how to you actu-ally do this.

I guess the first place tostart is to determine exactlywhat we need for parts.Even the slowest witted ofindividuals (which includesme) should know that weneed an SPC. I don’t have apart number for it so unfor-tunately you’ll just have tospeak to your PGI rep aboutgetting one. With this wewill need a SIB (smart inter-face board) PGI part num-ber 391-024-11RH. Onething worthy of mentioningis that the EPROM will bespecific to the manufacturerof the game so be sure tocheck with your PGI rep forwhat you need. To connect

the SIBs we will need adaisy chain harness (PGIpart number 311-504-56RH) and a harness toconnect the daisy chain tothe SIB, PGI part number311-504-26RH. Lastly, wewill need the harness toconnect the game to theSIB (sorry no part numberhere as this will vary withthe manufacturer of thegame; the other harnessesare generic and can beused across all manufactur-ers).

If you’re running an over-head sign, you will alsoneed a SIB to connect tothe overhead display. Inthis article, we will be con-necting to an older style

CHAMII+. The SPC canconnect to the PGI CoolSigns as well. You canorder a harness to connectthe SIB to the CHAMII+ butI will give you the layouthere as it’s pretty simple tomake.

After you have everythinglaid out as to what youneed, you have to address afew other concerns. Canthe SPC be left in the slotbank? Does it have to belocked away from pryinghands? Our controllers areall locked away in the sameroom as our SDS fuserackso leaving it with the gamesis not allowed for securityreasons. This means that Ihave to get wiring run from

Out With the Old - ContinuedBy Ted Befus

GoldStandar


The Gold Standard in Gaming Printers

Driven by

Technology & Innovation

Preferred by

Casino Operators

Praised by

Industry Experts

Chosen by

Manufacturers

Supported by

World-Class Service

25 years of innovation and excellence

Setting the pace for thermal printer technology

Leading supplier of TITO printers worldwide

More than 1 million printers installed worldwide

Most decorated TITO printers in the industry

Ten industry awards in five years

TITO printer chosen by OEMs across the globe

Preferred by over 40 manufacturers worldwide

Service & Support unmatched in the industry

Local support in Asia, Australia, Europe, North America,

Russia, South America

w w w . F u t u r e L o g i c I n c . c o m

GoldStandard_Ad_SltK.indd 1 10/8/2008 11:52:23 AM


our room to the slot floor tothe bank of games. If yourecall, the SPC uses RJ45terminations for its commu-nication lines so we have toget new CAT5E or CAT6cabling run to each bankthat will be connected (ourCON2 had the same secu-rity precautions but wewould go out from ourcontroller on an unshielded25 pair cable on a BIXblock). We prefer to run ashielded CAT6 with a recep-tacle at the end that I canthen plug a standardshielded CAT5E patch cordinto (see figure #1). At oursystem room, we have apatch panel with the sametermination in it that I canconnect the SPC to. I al-ways get two cables pulledto have a redundancy line

in the event that one fails.

Once the wiring is in placewe have to concern our-selves with getting every-thing hooked up and work-ing. I try to do a lot of thisbefore we ever go live (ifpossible). If you cantroubleshoot before your go

live date, things go muchbetter and you look muchbetter in the eyes of man-agement for taking thesteps to reduce downtime.

If you look at the SIB youno doubt will notice thatthere is no RJ45 input, sowe have to take that and



somehow connect the daisychain harness to it. That’swhere figure #2 comes in.Here you see an RJ45breakout box that we canterminate the daisy chainharness to. The output ofthis box will connect to thedaisy chain harnesses. Thedaisy chain will connect tothe SIB harness. From theSIB you have a comm har-ness to connect to thegame.

The SIB will connect to thegame through the gamecomm harness. Where itconnects is going to dependon the manufacturer of thegame. In this instance, weare connecting to the commboard on an IGT S2000.

Now that everything ishooked up for the games(the sign will come later inthis article), there are a fewgame options that are goingto have to be set up. Now, Iknow that this article wassupposed to be about re-placing your CON2 butsince I’m here, I will discussgame setup for a game thathasn’t been progressed yet(I have to get to my billionword limit somehow don’tI?).

We’re going to need akeychip to do this nextfunction (I’m not going intohow to access the menus,just what to enable). In theprogressive menu, we mustenable the style of progres-sive that is running (Singlelevel SAS, Multi level SAS,link, etc). This is importantsince the EPROM in that

SIB is looking for some-thing specific (I.E. SAS, linketc). I found this out thehard way as I was playing toget this working (embar-rassingly enough I had tophone PGI and we allfought to figure out whatwasn’t working. Sadly itwas set to LINK not SAS).While there, you will haveto address the game to thecorrect group for the pro-gressive. This group shouldmatch the group setting forthat progressive on the SPC(look for an upcoming ar-ticle on what this means).

After you exit the keychipmenu, we have to tell itwhere to find that newprogressive. The gameharness from the SIB isconnected to the gameSECONDARY port on theS2000. To enable this port,you must go to the COMMOPTIONS menu under SASCONFIG. Here you will findall the settings for the SASfunctions that the machinecan do (progressive, legacybonusing etc). There aretwo channels on the IGTgames: primary and sec-ondary. We only run SDS


Touch Solutionsfor Interactive Gaming

For more than 20 years, MicroTouch™ touch screens have been the global standard for interactive gaming. MicroTouch ClearTek™ II capacitive touch sensors continue that distinction as the industry’s preferred solution for fast, accurate, and durable touch.

• ClearTek II touch sensors offer at least 5 times the surface durability over other surface capacitive products due to additional hard coat and anti-scratch coatings.

• EX II touch controllers offer downloadable firmware to enhance custom gaming requirements.

• The Tactile Touch enhancement can entice players to play longerand can extend the life of older casino games.

• Wide-aspect touch screens are available for popular gaming displays ranging from 7" to 32".

To learn more about the ClearTek II Difference call 888-659-1080 or visit www.3m.com/touch

2008 © 3M MicroTouch and ClearTek are trademarks of 3M Company.


on the primary channel soat our site, we enable theprogressive on the second-ary channel. Also, you mustenter the SAS SECONDARYmenu and set the machineaddress. Each game shouldbe addressed sequentially(to make things easier, it’snot necessary though). Thisgives the address to the SIBso it can come online withthe SPC.

Now that the game side isdone we can get to theoverhead sign. Dependingon what technology is used,the SPC may or may nottalk to it. If I’m not mis-taken, anything fromCHAMII+ upwards shouldbe no problem. If you areunsure of whether or notyour sign will talk, speak toPGI.

We’re going to use the signoutput on the SPC to runthis progressive display,which means an extra set ofwires to get run and tohook up. If you don’t wishto do that, all you have todo is hook up the TX+ andTX- from the breakout boxfrom the SPC com port tothe SIB for the display andthere ya go. Like I saidearlier, I will give you adiagram of how it pins outfrom the sign port, so hereit is in figure #4.

I you look closely at figure#4 you will see that the SIBhas a set of dipswitchesthat are used to communi-cate which progressivegroup it should be listeningfor. Figure #5 shows you a

map of how those dipswitches make that pos-sible. If you look reallyclosely, you should noticethat this is actually how tohook up to an Elite meterbut fear not! If you readwhat it says, it also givesyou the connections for theCHAMII+ as well.

I think that about coversthis one folks. More tocome later on how to pro-gram the SPC and usesome of its auditing fea-tures.

- Ted [email protected]

Are yAre yAre yAre yAre you looking for schemaou looking for schemaou looking for schemaou looking for schemaou looking for schematic diagrams and otic diagrams and otic diagrams and otic diagrams and otic diagrams and other tther tther tther tther techni-echni-echni-echni-echni-cal documents for monitcal documents for monitcal documents for monitcal documents for monitcal documents for monitors, printors, printors, printors, printors, printers, ters, ters, ters, ters, touchscreens andouchscreens andouchscreens andouchscreens andouchscreens andmoremoremoremoremore? Vist the Slo? Vist the Slo? Vist the Slo? Vist the Slo? Vist the Slot Tt Tt Tt Tt Technical Servechnical Servechnical Servechnical Servechnical Server aer aer aer aer at slot slot slot slot slot-tt-tt-tt-tt-tech.comech.comech.comech.comech.com

FFFFFor ftp door ftp door ftp door ftp door ftp downloads, point ywnloads, point ywnloads, point ywnloads, point ywnloads, point your ftp client tour ftp client tour ftp client tour ftp client tour ftp client to:o:o:o:o:slosloslosloslot-tt-tt- tt- tt- tech.comech.comech.comech.comech.comusername=slousername=slousername=slousername=slousername=slot tt tt tt tt techechechechechpasswpasswpasswpasswpassword=kxkvi8ord=kxkvi8ord=kxkvi8ord=kxkvi8ord=kxkvi8


First Choice For GamingWhen over 200 of the gaming industry’s most respected manufacturers launch in excess of 2,000 products at the sameexpo, you know that it’s an event which means business. Be part of the experience

2009 will see ICE and ICEi incorporated under the International Gaming Expo umbrella brand - the largest and most comprehensive gaming exhibition in the world.

Earls Court | London | 27th - 29th Januarywww.ige-exhibition.com

www.ige-exhibition.com

INTERNATIONALGAMING EXPO


Slot Tech MagazineSlot Tech Feature Article

In a previous articleabout tackling monitortrouble, I covered some

points to assist in the loca-tion of the area under sus-picion. Now let’s look atsome troubleshooting spe-cifics.

Many have been the caseswhere a “working” monitorneeded to be pulled out of aslot machine to be taken tothe workshop for somereason or other. Note that Iput “working” in betweenquotes as if it was workingfine in the first place Idon’t see any real reasonto pull it out of the ma-chine. I suppose onepurpose for doing thiscould be because therecould be something notquite right with it. Itcould be showing a faintpicture or wide or narrowor lost its sync or is verti-cally inhibited or any-thing else that can gowrong with a monitor (thelist is endless) but it is, assuch working, meaning ithas juice, it has hightension building up andit has some sort of picture

showing, although notquite what is expected.Faced with a similar situa-tion, the monitor is pulledout and taken to the work-shop for further testing.This is where the fun be-gins.

Applying the correct juiceand signal inputs and flick-ing on the mains ON/OFFswitch…. total silencereigns! Erm…. Ooops! Wasthe mains input actuallythere? I’m quite sure Iplugged that in. Did thepower switch suddenlydecide to go FUBAR on me?A quick test with a multi-meter on Volts AC showedthat the juice (220v here inMalta) was being fed to the

monitor. Another quick testwith the multi-meter onOhms showed that themains ON/OFF switchworking fine with ZEROohms when ON and infinitewhen OFF. The fuse wasstill in place and didn’tdecide to vanish or comeout of its place on the way.Fuses do have a habit ofbeing a bit lose in theirholders and when movingequipment about, they sortof shift slightly and stopmaking contact properly.Just to make sure, eventesting it with a multi-meter proved that it wasstill fine.

So far so good. So whathappened? Why isn’t it

Fig 1: Voltage reading across reservoir capacitor.

More on MonitorsSMPS Operation and Troubleshooting

By James Borg


Repair Monitors, Power Supplies, Gameboards?Repair Monitors, Power Supplies, Gameboards?

Check any Electrolytic Capacitor In-Circuit with100% Accuracy in 3 Seconds---GUARANTEED*

Automatically discharges capacitor

Checks DCR with alerts for shorts

Measures DCR to 500 ohms

Measures ESR from 0.1 to 20 ohms

Checks caps from .47uF to 2200uF

Beeps one to five beeps for quality

Three-color chart for good-fair-bad

*range 0.47uF - 2.2KuF 90-day money-back guarantee

Portable, Easy to Use, Inexpensive, Highly Recommended by

leaders in the industry. CapAnalyzer 88A by EDS, Inc.at fine distributors like Happ, MCM, Kiesub, etc. or call 561-487-6103

coming on? The mindboggles. Where’s myfavourite monitor noisegone? Was the trip from theslot machine to the work-shop that much of a traumafor the monitor to handle?It was only a couple ofhundred meters at themost. Did it suffer a heartattack and call it a day?Was it afraid of beingtouched and poked per-haps? Is it because I pulledit out of its protective shelland it didn’t like beingexposed to the elementswith people looking at itwhile it was all uncovered?Was it suffering withdrawalsymptoms at being takenaway from its usual place?Monitors can be quite sen-sitive and they have feel-ings. I bet you didn’t knowthat. It certainly wasn’tbashed about on the way.Incidentally, monitors don’tlike being bashed about sodon’t do that, not on pur-pose anyway. Many times Iwished I had three hands,two for holding such abeast, and the third to openand close doors. Not sure ifI would need a fourth handunless I had an itchy noseat the time of opening andclosing the door. However,help is usually at hand inthe nick of time, and no,not to scratch my nose.

Thinking aloud about whatcould have happened. I canto some extent understandthe heater element goingopen circuit while themonitor is being movedabout especially if it’s justbeen turned off. When the

heater is on, glowing beau-tifully, it’s brittle, VERYbrittle. The best way to endup buying a new CRTwould be to hit the neck ofthe tube several times (nothard enough to break it,obviously) and that wouldbe a sure ticket of makingthe heater stop glowing.The element has just goneopen circuit. In otherwords, you’ve just killed thetube and no, you won’t wina prize. So this is some-thing else you shouldn’t do!I always suggest that it’sbest to leave the monitor offfor a short while beforemoving it about, just longenough for the heater tostop being so brittle.

In our case with the moni-tor not coming on at all, theheater issue has got abso-lutely nothing to do with itas the monitor would stillcome on, the high tensionwould be heard building upetc (I only mentioned it as a

back handed tip in gen-eral). The only thing miss-ing would be the picture!Not much good that eithercome to think of it. Ideallythe high tension would bepresent and the heaterwould be seen glowing.With those two areas upand running, most of themonitor would be fine–ish.I’ve been known to eatthose words before but veryfew people know about thatso I’m pretty safe.

Coming back to the prob-lem at hand, that’s themonitor not showing anysigns of life at all. A logicalapproach would be to goacross the reservoir capaci-tor (also known as the“filter capacitor”) with amulti-meter on Volts DCand see if there’s any read-ing across it. There shouldbe something in the orderof 300v DC (in our case aswe use 220v/50Hz here inMalta). (See Fig. 1)


Caution needs to be exer-cised working on this typeof circuit as the negative ofthe capacitor isn’t atground potential but atnegative 300 v DC whichcan pack a punch if you’renot expecting it. If youdon’t wish to use a meter tomeasure what’s across thiscapacitor and would preferto use an oscilloscope, thenmake sure that the scopeisn’t Earthed. If it was, thenyou’d be sending the nega-tive potential on the capaci-tor to ground and would setoff the circuit breakers andend up in a pitch blackworkshop, badly wishingyou had repaired thatemergency light the weekbefore. A good idea onceusing the scope to measurevoltages in this area is notto come into contact withany exposed metal parts onthe scope (even the probeitself) as the whole thing isat negative potential. Don’tworry a great deal as you’llsoon find out what I mean ifyou don’t follow this tip andI’m quite sure you won’t doit again in a hurry. Youhave been warned!

Editor’s note: I prefer to usea normally Earthed ‘scopeand power the monitor withan isolation transformer.Most casinos (here in theUSA at least) have a Sen-core PR570 isolation trans-former on the bench. It’s avariable voltage, AC trans-former (VARIAC) and isola-tion transformer in oneunit, complete with anadjustable safety trip levelfor current. It would be

crazy to operate a modernslot shop without this unit.

If the expected potential isthere, then you can go tothe next step and that’schecking if the 300v DC isactually arriving on theDrain of the chopper FET. Ifthis potential isn’t present,then look for a break in theprint between the reservoirand the choppertransformer’s pins 1 and 3(Fig 2). You can easily finda dry joint or a brokentrack on one of the pins ofthe transformer, especiallyif it was bashed about a bit(not on purpose of course).If you’re not quite surethere is a dry joint hidingthere, still give them a freshblob of solder as they likethat. Doing the same to allthe pins on the transformeronce the solder side of the

board is accessible willprobably save you lookingfor a bad connection in thefuture. Is that classified aspreventive maintenance orhaving a good foresight?Most likely you’ve beenthough it before like I have,so we’ll just call it “experi-ence.”

When the switched modepower supply section isworking properly, the 300vDC on the drain isswitched/pulsed at thefrequency set by the SMPSchip (in other words it stopsbeing DC and becomes AC).This “PWM Controller” IC istypically synchronised tothe horizontal frequency bymeans of a half-turn looparound the core of theflyback transformer or bytapping into a low-voltagesecondary winding on the


flyback transformer. Finding the voltagehere to be static means that the FET isn’tswitching hence the supply is for somereason not working. A scope always comesin handy in situations like this as placingthe probe on the gate of the FET will showyou what kind of feed the transistor isreceiving. (Fig 2)

In an ideal world (wishful thinking ofcourse), the feed to the gate should be of apulsed (square wave) nature in the order ofabout five volts or so in amplitude. If thesignal to the gate is actually pulsed and ofthe correct level, and the SMPS stilldoesn’t come on, then the chances arethat the FET has gone soft. This meansthat even though the conditions to thetransistor are correct, it still won’t start toswitch on and off. The only way out of thisis to replace the component with an identi-cal or better part. The occurrence wherethis component does in fact go soft isn’t allthat common. Usually it just shorts creat-ing havoc in the area around it. If havocwas to have a colour, the colour of havochere usually would be black as the partsaround the FET would be cooked good andproper. It’s not a very pretty sight I can tellyou that for nothing.

If the feed to the gate isn’t pulsed, then wehave to have a look at the output of theSMPS chip, which in this case is theIP3842N. Even though this chip is small,don’t let its size fool you as it does somepretty neat work. See figure 3.

It controls the switching power supplypractically from top to bottom. I won’t gointo any special detail about this compo-nent as one can easily download itsdatasheet from the Net. A good start is tosee if there’s any voltage reaching its Vccon pin 7 (Fig 3). This would be between 10– 16 v DC, always taking the reservoircapacitor’s negative side as your referencepoint. If the result of your tests isn’t whatis expected, have a look at the high valueresistor (R502 - 120K 3W) or resistorsfeeding the chip on pin 7. There is usually


a high value carbon resistorchain leading to this pin.Some manufacturers preferto use more than one,others just one. These havea nasty habit of going highin value, and at times evenopen circuit eventually. Theresult of which is juicestarvation to the little chipwhich won’t be enough tokick start it. The end resultbeing no output to the FETis pumped and the powersupply circuit remainspractically dead to theworld. Not a sign of lifeanywhere. If the resistor’svalue is still within toler-ance, the required voltagewill reach pin 7 of theSMPS chip and the devicewill start to work withsquare pulses coming out ofpin 6 to the gate of the FET.It’s worth mentioning thatthe supply rail here has tobe pretty clean and if anysigns of ripple or noise areseen, it would be a goodidea to have the 100uf/25v(C506) capacitor replaced.

Once the first pulsereaches the gate of the FET,the drain will go low whichwill basically energize thechopper transformer be-tween pins 1 and 3. Part ofthis energy is transferred tothe winding between pins 5and 7 which will in turnsend a positive pulse to pin7 via diodes D504 andD505 respectively. Thispotential is filtered andkept steady by means ofC512 which is a 47u/50vcapacitor. It’s this voltagethrough these diodes that

keeps the SMPS chip pow-ered up once the initialkick start via R502 hasbeen and gone. In reality,once the chip is workingfine and being supplied viathe diodes, R502 can beliterally pulled out of circuitand it will continue to func-tion normally. It’s like thebattery in your car. Youonly need it to start theengine. Once the engine isrunning, the battery isn’tneeded at all.

These two diodes are fastrecovery rectifiers. Diodeslike 1N4007 shouldn’t beused even though they canwithstand high potentialsand currents up to 1 Amp,since their lack of “speed”makes them totally unsuit-able and will cause them toheat up after a few mo-ments and get damaged, orworse still, creating havoc

around your circuit—yes—coloured BLACK! Ouch!

I think I’ve covered this typeof circuit in some detail andpointed out what can usu-ally go wrong in such situa-tions. Having said that,there are some pretty weirdfaults out there and I’msure that I haven’t comeacross all of them so far buttomorrow is another day, anew beginning, a new chal-lenge awaits, a new prob-lem waiting to hit you inthe face and make you pullyour hair out, all ready andwaiting to be tackled andcut down to pieces. Inter-esting stuff which can neverbecome boring…shockingyes…hair-raising yes…butnever boring… till the nexttime…

- James [email protected]



Aristocrat Video“Host Disabled”

Sometime during thenight, the game lostcommunication with

the Mikohn system. It wasdiscovered first thing in themorning when we werecompleting our rounds ofcanvassing the gaming floor

The Great Big Arrow

for changing burnt outlights, BVs off line, and anymachine deficiencies thatwe discovered after the softdrops were done. Today wasmy day to go with AGCO toseal EPROMS. We wereperforming an AristocratEPROM upgrade when Iwas approached by anothertechnician regarding an-other Aristocrat game dis-playing “Host Disabled”error. He did check theMEAL book and discoveredwe were having problemswith the game not commu-nicating. He stated that theSPC II board was cleared,

swapped with anothergame, and he even checkedthe options just in case themachine had defaulted.They were all good. He alsostated that the SPC II boardworked in the other gameand not in his and viceversa. When he approachedme about this problem andwhat he did so far totroubleshoot it, I looked atthe CPU board that wasbeing sealed by our AGCOofficer and all of a suddenthe small communicationboard stuck out like a sorethumb with flashing lightsand a great big arrow point-

By Kevin Noble


ing right at it. I asked him ifhe had reseated this boardand he said “no.” He tookoff around the corner andreturned about five minuteslater with a great big grinon his face and I knew thathe got it up and running. Iremember having this exactproblem years ago with thesame symptoms. It wasfunny how all of a sudden itcame back into play afterall those years but this timewith a big flashing arrowpointing to the problem.

Aristocrat“Could not clear staticRam after clear”

While in the process of thesame upgrade project andduring a RAM clear proce-dure, the machine wouldnot let us clear the staticram by pressing the changebutton and cash out buttonat the same time. A RAMclear was performed acouple of times but thesame problem continued.We next double-checkedthe option settings andchecked the SPC II boardand swapped the boardwith the game beside it asthey both worked great. Wenext changed the E-squarebecause we were havingproblems with the gamesrebooting after the RAMclear. Another Tech discov-ered when he swapped theE-square from anothergame, in some cases duringthis upgrade the gamewould reboot fine. Wechanged the E-square inthis game but we could notclear the static RAM again.

The next step was tochange the CPU and beginthe RAM clear processagain. This time we got tothe static RAM clear pro-cess and the game allowedus to proceed to completethis project.

Aristocrat“Host Disabled”

I received a call regardingthis “Host Disabled” errormessage again in the sameproject upgrade but on adifferent day. Having to getreacquainted withAristocrat’s software (espe-cially on this upgrade) wecleared the SPCII board andthat did not work. Havingexperiences re-seating theComm board on the CPU acouple of days earlier, wedecided to give it anothertry but to no avail. Back toswapping parts with an-other game to troubleshootthe problem. This time,after swapping the SPC IIboard and clearing it, theboard from another gameworked and the problemmoved. We replaced the badSCP II board with anotherand checked out metersand communication closedthe door and the gamecame back on line andpassed inspection.

Bally S6000“Printer not printing”

“Look what you started,”said Gary. I checked theMEAL book for the pasthistory of the game to seewhen the printer startinghaving problems when I

noticed a printer jam thathad been repaired by me awhile back. It rang a bellregarding what Gary wastrying to say. I noticed thata variety of things had beendone to this game likereplacing SMIB boards,printers, and fiber boards,then swapping fiber linesand printer boards with thegame next to it but theproblem never moved. Theprinter will print fine in testmode but not in live gamemode. We were asked tobreak seals on the CPUboard and replace the CPUboard to solve this problemuntil we ran into a varietyof different twists andturns. I had AGCO come tothis game, verify the meterswere correct, powered downthe game, removed theCPU, and then broke theseals on the game. I placedthe CPU back in the com-partment with out seatingthe CPU into themotherboard because I wasremoving the board in acouple of seconds anyway.With the seals broken, the“Out of Order” card in thewindow of the game, andthe machine powered downI proceeded to the shop,signed out my CPU boardand clear chips. Once backat the game I replaced theCPU board and started todo my RAM clear when Inoticed no LED on the frontof the CPU, a funny staticsound coming from thespeaker, and the funnynoise the Atronic e-motiongames (on the next bankover) do when they go onand off line.


“That’s certainly not good” Ikeep saying to myself eachand every time I tried un-plugging something fromthe motherboard and pow-ering the game up to seewhat was bringing the bankdown. It finally came downto few items because every-thing else had been un-plugged except for my newCPU board, themotherboard, or the powersupply.

The easiest thing was toplace the old CPU back inthe game (which I did) butthe problem still existed.Second easiest was thepower supply and to mysurprise, the CPU lit upand the Atronic e-motionorchestra band next to mestopped playing. Right thenand there Gary and I hadthis problem licked. Wecontinued to set the op-tions, signed out some bills

and wished each other luckas we cashed out and thelittle piece of paper peekedthrough the slot and pre-sented itself to us with allthe correct information onit.

WMS Video ProgressiveLink

During the Operating Sys-tem upgrade, the progres-sive values on the JohnWayne top box would notdisplay. The first gameworked without any prob-lems and I must admit thiswas the first time I had toset the options for this typeof set up. I usually have thecheat sheet of options withany footnotes on how toretrieve information or setoptions to the original fromthe warehouse. At first Ithought it was a problemwith the RAM Clear I justperformed when I could not

set the retrieve the progres-sive data. I started theprocess again only to be inthe exact position that Iprevious was in. We triedre-seating the connectionson the “Y” cable, rebootingthe server underneath inthe old drop, re-clearingthe game with another setof RAM clears but still thesame results. When weclosed the door, the gamedisplayed the progressivewas not set. We continuedto try and get the progres-sive to retrieve the data butstill the same results. Weeven tried to toggle theretrieve data box on thescreen while moving thecable in the “Y” board, andswapping positions on the“Y” cable that was mountedon the bottom of the ma-chine. I had another tech-nician come in and startfrom scratch to see if I wasjust overlooking something


that was so simple. Garywent through the exactsame steps and proceduresthat I performed and hewas in the same positionthat I was. We found anunused “Y” board that wasin the drop and said “whynot?” We replaced the “Y”board, went into CommPort set up, pushed theretrieved data box and theprogressive number beganscrolling on the top monitorscreen.

Bally S600Printer Error on CVT report

The afternoon shift techni-cian was called to this ma-chine right after a paper fillfor the game going intomanual jackpots. Uponarriving for our shift in themorning, this game waspassed on to us to trouble-shoot. We started by check-ing with the Mikohn to seeif it was communicatingand then checked the CVTroom by writing a CCConfig report when wenoticed the “Printer Error”on the report. We nextswapped out two printers inthe game because the firstprinter did not work. Withthe second printer notworking and not trustingthe spare parts sitting onthe shelf, we swapped theprinter the game next to itbut the problem still ex-isted. We tried to eliminateall the parts without havingthe seals on the CPU re-moved by swapping out thefiber board and Slot Ma-chine Interface Board orSMIB in the game but that

still did not work. We askedto have the seals removedto perform a clear andreplace the CPU board ifnecessary, but the CPUthat we had in stock wasbad and it would not let usperform a clear. We clearedthe original CPU and thatdid not work. The CPU’sreset light kept blinking onthe spare CPU that was inthe shop. Reggie suggestedswapping out the DUARTSon the boards just to ex-periment because we didnot have any CPUs in theshop. We RAM cleared theboard, set the options,inserted bills into the BVand prayed when wepushed the cash out but-ton. To our surprise, aticket peeked through theslot and extended itself tous. It was a day of trouble-shooting, experiments, andlearning.

Aristocrat VideoValidation Not Set

I was called to a machinebecause both tower lightswere staying on. This is theindication that the CPU fanis starting to fail and needsto be changed. Throughoutthe day, we kept checkingon the availability of themachine to change out thefan but we could not get onit by the end of the dayuntil the very last minute.When we came in the nextday, the Shift Managerinformed us that the gamewas placed out of servicebecause it was not printingtickets but when it cashedout, it was a manual hand

pay. I checked the MEALbook on what was donefound that afternoon techtried the SPC clear,swapped out a new SPCboard, and tried rebootingthe fiber board but theproblem continued. I no-ticed that the monitor dis-played validation not set soI decided to start fromscratch with the SPC RAMclear that did not do any-thing. I replaced the SPCboard, removed the hopperto check the fiber board,then went into the optionsand cleared the SPCmemory. I next rebootedthe SMIB board, SPC boardand game all at once andthe game started communi-cating again. The game wasworking fine into we re-ceived another call aboutan hour later that the gamewas back to manual jack-pots. Chris went to checkthe problem out and saidthat he repositioned thehopper away from the fiberboard and since then wehave not had a call on thismachine.

- Kevin [email protected]

Are you trying toreach the gaming

industry’s technicalcommunity?

Consider an ad inSlot Tech Magazine



Quick and Simple Repairs #45By Pat Porath

IGT AVP 2.5 ReplacementPrinter Bezel

On an IGT AVP 2.5video slot, such asthe “Wheel of Fortune

Las Vegas” or “IndianaJones”, there is a printerbezel that was recentlyreleased to prevent printerjams. The IGT part number is58158700. The design is a bitdifferent than the previousones, and it looks like itshould work very well. OurIGT 2.5s didn’t have a lot ofprinter jams when a cus-tomer would cash out, onlysome here and there, noth-ing major at all.

Speaking of printers andprinter jams, we have an IGTslant top “I-game” video slotthat has been having jamsoff and on for quite a while.The printer that is installedin it is a GEN 2 with themetal type bezel on it that isheld on with four smallscrews. After installing the“new type” on the AVP 2.5sand taking notice of thedesign, I had an idea for thegame that has been giving usproblems. Crazy as it mayseem, I removed the bezeland turned it UPSIDEDOWN. Yes, it did fit (with-

out modifications) upsidedown onto the printer. Whythis specific game had prob-lems, I didn’t know but Iwanted it fixed. All of theother games in the bankwork fine, only the one haspaper jams.

The way I tested it to simu-late a customer cashing outwas pretty easy. I opened themain slot door and pressedthe diagnostic button to getit ready to print a demoticket. Next, I removed the“hopper door” and closed themain door. Otherwise if youclose the main door to have ademo ticket print out of thegame, it will go back intoplay mode. With the hopperdoor removed, you still havea “door open M” so the gamestays in diagnostic modewith the main door closed.

Now that the metal printerbezel (which is screweddirectly to the printer itself)is turned upside down andthe main door is closed tohave the printer and themachine printer bezel linedup, we can test it out. Justlike a customer is sitting atthe game with the main doorlocked up, I started printingdemo tickets. One after theother printed without anyproblems. Did this “cure” themachine? I’m hoping so. Oneof the main reasons fortrying something differentwith it, is because nothingelse seemed to work. I madesure that the completeprinter assembly was lockedinto place and I made surethat the “exterior printerbezel” was the newer type.They have a clear plasticpiece inside of them that


help the paper move easilythrough it. The old type doesnot have the clear plasticpiece in it. Some of themwork fair, and others willjam up. So far so good withthe repair. I haven’t heard ofany complaints yet.

A note about feeding paperinto the printer: I have foundthat a few of the games inthe bank had the paper fedincorrectly. You may ask,how can that be? Well, on afew, the paper was fed UN-DER the metal paper trayframe. On the top part of itthere is a curved piece ofmetal. The paper is supposedto go OVER it then be fedinto the printer. I started toget the word out at the ca-sino I work at so they are fedproperly (This only applies tothe GEN 2 Universal thathas the large metal papertray with the specific curvedmetal on it.).

Aristocrat Gen 7 ViridianBattery Low Error

While making the rounds onthe gaming floor, I cameupon an Aristocrat ViridianGen 7 that had a “batterylow” error displayed on thescreen. Battery low? How inthe world could that be? Thegame is less that six monthsold, is it even possible? In-stead of removing the mainprocessor board and testingthe batteries with a meter, Ithought why not try to areboot of the game first? Thereboot was done and thegame was fine. I waited for acouple of minutes just tomake sure, and everythingwas OK. No errors. I didn’thear of any complaints fromthe game since. In thisparticular case, a simplereboot of the game seemed to

have done the trick.

Atronic e-motion Conver-sion With Old Main Boards

We recently converted 24 ofour e-motion games andwhat a project. What everhappened to the days ofreplacing three reel strips,three pieces of glass and twochips? I asked a co-workerjust for fun and he said,“Those days are long gone.”

Editor’s note: And I say thatif you’re looking backward ateasy conversions, you shouldlook forward to even easierconversions as server-basedgaming becomes a realityand machine conversion isjust a mouse click away.Good for the operator andmanufacturer, not so goodfor gaming’s technical com-munity in terms of job secu-rity. – ed.

Here is what the kit in-cluded: An additional coolingfan, a cooling fan shroud, a“piggy back board” (to go onthe main processor board), adongle chip, a new piece of

top glass, a replacementmotherboard, new light bulbs(yes, even new light bulbs)and of course the programchips themselves. Each gameincluded a total of six. Don’tget me wrong, I like the e-motion games and our cus-tomers like them too. Theyrun very well and are du-rable. As for the conversion,it wasn’t difficult, only timeconsuming. It took me aboutan hour and a half to do onegame. But what is the com-pany supposed to do? Withmore graphics, more bo-nuses, and proper gamecommunication with thetracking system a must, theparts need to be replaced tokeep up with the times.

Here is where the problemcame into play. When a co-worker started to turn thegames on and set the gameoptions, we had issues. Thefirst three games would noteven boot up properly, so afourth game was turned onand checked out. That gameended up with a dongleerror. I was asked to trouble-shoot the three to see if I


could get any of them run-ning and ready to option. Itried everything I could thinkof and nothing worked. Someof the things I tried were:swapping main processorboards, swapping video cards,a RAM clear, a differentpower supply, and switchingthe top LCD contion with thebottom. Nothing at allworked. Three hours later, aphone call was made be-cause none of this was mak-ing any logical sense. Wehave done Atronic e-motionconversions before; thiswasn’t our first time. So,what was the major problem?Why wouldn’t these gameswork properly? Come to findout we needed a “version F”main processor board. Ok,what version are the onesthat we are working on?They were “version E”boards! I could have beenthere for days and wouldn’thave gotten the games run-ning! What about a differentbank of games that werebeing converted, what ver-sion do they have? Theyalready had the correct onesin them. I don’t really knowhow we had different onesbut it remained that we did.If we had started on the backpart of the gaming floor, thegames would have workedproperly, and we would haveknown that it had to besomething original with thegame that prevented it fromworking properly. So replace-ment boards were ordered.At least we could get some ofthe games running that day.In conclusion, if there aremajor problems with “e-motion” conversions, checkto see that the main proces-sor is the correct version.There is a small whitesticker located in the middleof the board that indicates

the version.

Bally 6000 ticket printerproblem

Recently we had a Bally6000 that was locking upfor handpays. It didn’tmatter what amount thecustomer cashed out, itwould be a handpay. Thegame had paper and it wascommunicating with theOasis System. I knew thatit was communicatingbecause of a quick check ofa main door OPEN andCLOSED that showed onthe Oasis System display.

So, what was going on?Maybe a game optionwasn’t set correctly? Areplacement processorboard was just installedand still it wouldn’t print aticket. I checked gameoptions and one wasn’tcorrect. A Full RAM Clearneeded to be done so theoption could be set. If Irecall correctly, it wasoption “50 LO” which is thelower game I.D. numbers,which was at zero. A RAMclear was completed, andthe option was set thesame as the game next toit. Time to see if it wouldprint a “demo ticket” yetagain. Once more, it didn’tdo anything, it just satthere. To print a “demoticket” simply use testnumber four. Press the“test button” until “4” isshown on the game display(the same test as a hoppertest). The display will alsoshow “coup” which standsfor “coupon” a.k.a.“voucher” or “ticket.” Pressthe spin button, whichshould be lit up, and it isSUPPOSED to print aticket.


Next, the main processorboard was removed to com-pare the DIP switches andthe jumper settings. One ofthe DIP switches was setdifferently on the problemgame compared to a knownworking game. On a Bally6000, a Full or CompleteRAM clear procedure has dobe done so the new DIPswitch setting will be recog-nized so another RAM clearand option was done. Onceagain, it did not print a demoticket. I compared the DIPswitches to the game to theleft and they were differenttoo. So the procedure wasdone again only with thesame darn result. I even hadthe printed “Full RAM Clear”procedure, right from Bally,followed it word for word andnothing. I even checked the“Oasis Global Settings” andthey were all OK too.

What to do next? I swappedthe printer and the COMboard (a.k.a. power board)with the game next doorbecause I knew that theywere good. The game STILLwould not print a demoticket. It would feed a blankticket and even print a selftest ticket but not a demoticket. It started to look likethe problem was somethingwith the game, not theprinter itself. To verify, Iswapped the main processorwith the game next door andSTILL a demo ticket wouldnot print. What in the worldwas left? The main proces-sor, printer and COM boardwere all swapped. The gamedefinitely was communicat-ing with the system becauseI checked the Oasis SystemDiagnostic Monitor andlooked under transactions.Nothing unusual was thereeither. I was hoping to see a

“printer not communicating”error or maybe a “Sentinalcommunication error” but no.

I had already checked mostof the connections to see ifany were loose on theprinter itself and on thegame’s backplane board. Whynot check again? I removedthe processor board and thereels to get them out of theway and started checkingwiring and connections moreclosely this time. So far sogood, nothing out of theordinary and nothing loose.Next, I traced the wire har-ness from the back of theprinter COM board to seewhere it went. The powercable went to a power sourceand...WHAT IN THE WORLD?THE PRINTER COM CABLE ISLYING ON THE BOTTOM OFTHE MACHINE! The otherend of it, which is SUP-POSED to be plugged into thebackplane wasn’t evenplugged in at all! How didthis happen? I spent hourstrying to repair the printerproblem and the COM cablewasn’t even plugged in. What

was up with that? I couldhardly believe my own eyes.The game was powered downand I plugged in the cable,double checked with thegame next door to make sureit went into the correctsocket and turned the gameback on. Game options werere-checked and one wasn’tcorrect so ANOTHER RAMclear was done and FINALLYit was time for testing. Withtest number four, I carefullypressed the spin button andstared at the ticket printer.

“Please print me a “demoticket” I asked. In a fewseconds it printed one. FI-NALLY! Victory Was Mine!Next, I closed the slot doorand tried some “promotionalcash.” I downloaded $20.00and tried my luck. After alittle bit, I hit $10.00 andpressed the cashout button.YES! It printed a ticket in-stead of locking up for ahandpay. Finally the game isworking like it is supposedto. I inserted it and pressedthe cashout button onceagain. YES. Two for two, the


game is definitely workingproperly. I only wish I knewexactly how it got unplugged.The game was recentlymoved, so it may have beenfrom that but I’m not sure.All I cared about was thatthe game is working prop-erly.

Editor’s Note: More of aquestion really, Pat. Knowingnow that this is a possibility,will you change your trouble-shooting tactics in the fu-ture? How difficult is it toexamine all the connectors?

Aristocrat Viridian BillAcceptor Door Switch

I received a call that thegame wouldn’t show a “billdoor closed” so I did theusual things: reseated thestacker box, opened andclosed the bill door a fewtimes and closed the mainslot door. This time it didn’thelp. Reseating and openingand re-closing didn’t work.

I wasn’t even sure where thebill door switch was locatedas I had never encounteredthat problem with a Viridian.Located under the stackerbox door and frame, on theright hand side, was theswitch. It actuates when thedoor is closed; part of thedoor frame presses on theswitch. When opened, thedoor frame is lifted off of theswitch and the machineshows “bill door open.” Ichecked it out and thoughtthat if I ever-so-slightly bentthe door frame inward so itwill push on the switch alittle bit better, maybe itwould work. So VERY care-fully I bent it inward just alittle bit (I wouldn’t even say1/8th inch) to see if it would

work and it did. The bill doorshowed closed. I opened andclosed it a few times just tomake sure and it workedgreat.

IGT S2000 Stacker DoorSwitch Problem, a.k.a.“Door Open B”

I was asked to look at anS2000 that wouldn’t show abill acceptor door closed. Igrabbed a spare microswitchbut no luck. The “door openB” remained on the display.The male connectors were abit loose on the pins so Iused my pliers to gentlypress them down a bit sothey would fit better. Thatwasn’t the problem either. Ifit isn’t the switch or theconnection, maybe it is aproblem with the wires?While checking out theplastic protection that wasover the two wires neededfor the switch to work Inoticed something. Was thatelectrical tape that I saw? Itsure looked like it. I took offpart of the “plastic wire

protector” to expose therepair and there the problemwas. A wire had come dis-connected, no wonder itdidn’t show closed. The wirewas repaired and the plasticwas put back on. I closed thebill acceptor door and thenthe main door. Now itshowed closed. I opened itagain just to make sure thatit was working properly, andit was. Another game backonline.

Epic 950 Printer OpenProblem

I received a call that aprinter had an error on aBally Cinevision. The printerthat was in it was an Epic950. Thus far we haven’t hadany major problems withthem at all that I know of.When I peered into the gameand saw that it was a 950, Iwasn’t exactly sure where tostart. I don’t have any repairexperience with these at all.I have read about them, butno hands on experience yet.


On the side of the printer, acouple of LEDs were lit up.One of them is labeled “pa-per” and the other “open”. Iknew that it thought it wasout of paper because itwasn’t fed into the printerhead, but the “open” status, Iwasn’t quite sure. What didit think was open? I reseatedthe complete printer assem-bly and nothing happened. Ialso opened and closed theprinter head a few times butnothing happened thereeither. I authorized a payoutto be completed so the cus-tomer could get paid out andlooked more closely at theproblem. Usually with ticketprinters there is a print headOPEN and CLOSED switchand a “printer assembly”OPEN and CLOSED switch. Itmay be a switch or it may bean optic; it depends on themanufacturer of the unit. So,I took a look at the back partof the unit which slides up tothe “COM” or “power” boardbut I didn’t see anythingunusual there. Next I took apeek at the printer headarea and noticed a smallmicroswitch on the left handside. When the head isclosed, it pushes on theswitch and the unit knowsthat it is closed. I used mysmall flat tip screwdriver andpressed on it and right awaythe “open” LED went off,meaning that it indeedshowed that the print headshowed CLOSED. I carefullybent the metal part of themicro switch so that whenthe plastic “striker” part ofthe head pressed on it, itwould work. I closed theprinter head and the LED didgo off. The paper was fed,and it started to feed right

away. It wouldn’t feed at allbefore because it thoughtthat the head was in anOPEN state. When I closedthe slot machine door, thegame printed out the 400credits like it was supposedto. This was the first timethat I had any major prob-lems with an Epic 950. Theparticular printer has beenon the floor for around ayear. I don’t know exactlywhat caused the switchproblem. Maybe the printhead was slammed closed?It’s hard to say. The mainthing is that the problem wasfound and resolved in atimely manner.

TRM Not Accepting $10.00Bills

Well, first of all what is aTRM? That is was we call our“Ticket Redemption Ma-chines” at the casino where Iwork. I was asked to look ata JCM WBA 13 bill acceptoron one. The complaint wasthat the machine wouldn’taccept $10.00 bills, so Ihelped the cashier cagesupervisor remove the unitout of the machine (thecashier cage oversees theTRMs) and I took it to theshop for a once over.

The bill acceptor was set onthe bill acceptor bench and itwas time to check it out. Ifirst opened the transportassembly part and didn’tnotice anything unusual.After that I opened up thebill acceptor head. Ah ha!Here is more than likely theproblem. At a training class,I was told the majority ofproblems (not all) were dirt,grime. The head did in fact

have dust and grime in it.What we usually do is take acordless Dremel with a smallnylon wheel on it and cleanoff all of the rollers. Youhave to be very careful whendoing this because if not, youcould damage an optic if it istouched with the wheelwhile it is spinning. Next,the bill acceptor is blown outwith compressed air. Afterthat, the optics and magnetichead are examined andwiped off.

Now it is ready for calibra-tion. DIP switches 5, 6, 7,and 8 are turned on andpower is applied. The unitwill “cycle” for a moment,and then the black andwhite calibration paper canbe inserted black side first.The paper will go into andout of the unit quite a fewtimes, and then it will fullyreject it. Next, power needsto be removed and DIPswitches 1, 2, 3, and 8 needto be turned on. Power upthe unit and turn DIP num-ber 8 off. The bill acceptorshould “cycle” like it wouldin a game and accept a bill.Once I cleaned, calibrated,and tested it on the bench, Iwas quite sure that it wouldrun fine in the TRM.

NOTE: The cleaning andcalibrating technique that Ipersonally use may differfrom the one that you use. Ifthey are really bad I will usea mild dish soap solution ona damp rag, then wipe outthe inside of the bill acceptorhead after it is blown outwith compressed air.

- Pat [email protected]


New! Modular ClassPick and choose your traininggoals from a variety of topics.

Contact us. Slot Tech Magazine 1944 Falmouth Dr. El Cajon, CA 92020tel.619.593.6131 fax.619.593.6132 e-mail [email protected]

TechFest 18

RIP John SzewczykThirty-year vet Chief Petty Officer and a Slot Technician JohnSzewczyk died suddenly of a heart attack in his home Friday, Oct.24, 2008.

John was one of the students who attended TechFest 18 in LasVegas recently. John worked at Chinook Winds Casino in LincolnCity Oregon as a Slot Technician.

John is survived by his wife of 26 years, Christy Szewczyk of LincolnCity, daughters Erica Johnson of Salem and Randi Szewczyk ofLincoln City, his son Timothy Johnson of Salem, granddaughterKristiana Johnson of Eugene and his grandson Kealon Buchwald.

John was a loving and tender husband, father and grandfather and afriend to many. He enjoyed spending his free time with his familyand working on computers. John loved being a Slot Technician andenjoyed sharing his skills with other technicians. He always madehis friends smile and he will be deeply missed by all who knew thiswonderful man.

TechFest 18 was held Octo-ber 21-23 2008 at the SaharaHotel and Casino in LasVegas, Nevada. With 17previous events under ourbelt, the TechFest team ofpresenters representing 3MTouch Systems, MEI,FutureLogic, JCM, TransactTechnologie, Sencore, CIInnovations and Ceronix allpresented their usual, out-standing seminars. Thanks,gentlemen. I’ve run theirpictures twice a year since2001. I’m not going to do itagain this issue. You allknow what these guys looklike.

Sadly, I must close this issue(and the year 2008) on a sadnote and report the untimely(shocking, really) death ofone of the stars of TechFest18, John Szewczyk. Reportsindicate that he was havingchest pain while in Vegasbut refused to get any medi-cal help. He died the nextday at his home in Oregon.He was a really funny guy.Damn that sucks.-rf


Documents

december08 - Slot Techslot-tech.com/members/magazine/lores/december08.pdf · James Borg International Contributor Martin Dempsey Slot Tech Magazine is published monthly by Slot Tech