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Snack - Based Troubleshooting and Repair Guide

1670065 Page 32 of 54 September, 2002

NONE
READY

No selection is ready
to vend. Check that
no time-of-day
inhibits are active.

Check time-of-day or tray list.

Program-
ming Guide

Disconnect all trays.

Check main J30 to J55 interface

or J38 to J61

Plug one tray in at a time and test.

(See NOTE
on page 7).

RAM ERROR

RAM is not initial-
ized or is not compati-
ble with the currently
loaded software.
Connection between
main controller and
interface lost.

Clear RAM.

on page 54

If problem persists, replace con-
troller board.

Controller
Board on
page 39

ROM ERROR

Error in the program-
ming EPROM.

Clear RAM.

on page 54.

If problem persists, replace
EPROM.

EPROM
Replace-
ment on
page 2.

If problem persists, replace con-
troller board.

Controller
Board on
page 39

SV.EMPTY
NN

Selection NN was
marked as empty by
the SureVend™ sys-
tem because a product
delivery was not
detected.

Check that product is loaded prop-
erly.

Open, then close the main service
door.

Operator’s
Guide

SV.TST XX

This diagnostic auto-
matically enters the
appropriate screen.

Perform appropriate SureVend™
tests.

Program-
ming Guide

Table 2. Possible Failures (Diagnostic Messages) - Continued

DIAGNOSTIC

MESSAGE

FAILURE

DO THIS:

REFER TO:

Содержание Snack Eenter I

Страница 1: ......

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Страница 3: ...4 SureVend 15 Test Equipment 17 Using A Multimeter 17 General Information 17 Measuring High Voltages 17 Using Display Hold not on all meters 17 Using Range Hold 17 Making Measurements 17 Measuring DC AC Voltage 17 Measuring Resistance 18 Testing For Proper Input Voltage and Noise 19 Identifying Failures 20 Removal and Replacement Procedures 36 General Information 36 Power Panel Assembly 37 Removal...

Страница 4: ...5 Gum and Mint Motors 46 Removal 46 Replacement 46 SureVend System 46 Removal 46 Replacement 47 Delivery Pan Assembly 49 Removal 49 Replacement 49 Coin Mechanism 49 Removal 49 Replacement 50 Bill Validator 51 Removal 51 Replacement 51 Maintenance Keypad 52 Removal 52 Replacement 52 Set timing of the Rotary Vend Door 53 Clearing RAM Procedure 54 ...

Страница 5: ...nt smoked gray transparent or pink transparent 2 For storage the best protection for the assembly is to leave it in its shipping carton If it is removed from the carton leave the assembly in its CLOSED storage bag while transport ing or until it is ready to be installed in a machine 3 Before handling the PCB assembly be sure you are wearing a conductive wrist strap or other suitable ESD protective...

Страница 6: ...r board Other EPROMs may have a small dimple as shown others may have a painted stripe Take note of where the locating mark is on the EPROM currently mounted on the controller board Your new EPROM will be placed in that same orientation Some EPROMs have 28 pins opposed to 32 pins on newer snack based models so they will not use the entire socket Newer snack based machine s EPROMS will cover entire...

Страница 7: ...Snack Based Troubleshooting and Repair Guide September 2002 Page 3 of 54 1670065 Figure 1 ...

Страница 8: ...ected with a circuit breaker or fuse conforming to local regulations 3 Power Checks a Voltage polarity and noise potential checks should be made to determine that each is of correct level b Voltage checked between hot and neutral lines polarity checked between hot and ground lines should indicate 110 130 volts ac for 120 volt 60 Hz locations or 220 240 volts ac for 230 volt 50 Hz locations A noise...

Страница 9: ... any of the internal components within the filter could prevent proper power distribution within the merchandiser Light failure improper board opera tion or tripping of main breaker could be attributed to internal component damage in the EMI Filter 7 Transformer a The transformer is a double primary winding 120 volt ac step down that provides 24 volt ac to the main controller board for distributio...

Страница 10: ... and functions a These functions are accomplished primarily by way of microprocessor U1 working in conjunction with the other onboard processor chips Conditions are constantly moni tored with the help of several peripheral devices working in conjunction with one another Diagnostic messages are generated and displayed when conditions within the merchandiser warrant b All machine setup data that mus...

Страница 11: ...ata retrieval device Pin 1 provides a ground reference for data transmission pin 2 data receive pin 3 and return transmission signal RTS pin 4 Pin 3 also acts as a communication transmis sion signal CTS and reports directly to microprocessor U1 Data transfer is con trolled through U14 inverter chip 5 volts dc can be measured at pins 1 and 4 for logic circuit operation NOTE See DEX Overview and Cap...

Страница 12: ...pin 5 send data Pins 1 and 7 supply a regulated and filtered 5 volts dc for validator logic circuit operation c J42 Pulse Validator Port Serial data communication represents a constant stream of information traveling in both directions send and receive Pulse operation is based on a single signal being sent and processed at the microprocessor for response No transfer of data occurs and consequently...

Страница 13: ...line voltage for all motors within the merchandiser are provided by transistors Q1 through Q5 The transistors are turned ON by Darlington drivers U5 through U9 when a selec tion has been made and the comparator motor sense line has been satisfied The Dar lington will turn ON transistors Q1 through Q5 and provide the low to run the selected motor s Pin 1 provides gum and mint sense by way of compar...

Страница 14: ...h keypads operate on a matrix concept see Selection Matrix on page 11 NOTE Early NV models are equipped with a 4 arrow keypad as opposed to a two arrow keypad D Display System 1 The universal display board is powered by an on board DC DC DC AC converter that supplies low voltage AC approximately 5V P P to heat the florescent tube filament It also provides the high approximately 29vdc grid voltage ...

Страница 15: ... displays and even the tray system in the snack merchandis ers as well as applications for other merchandisers are all examples of matrixed devises Basically a matrix can be pictured as a grid with vertical and horizontal lines that intersect in a symmetrical pattern The points where the lines cross represent an input switches or an output motor digit in a display etc to the microcomputer The adva...

Страница 16: ... a 5 selection gum and mint unit and 5 additional selections not presently used are available for a total of 80 possible motors The matrix consists of 5 Column lines and 16 Row lines a In order for any motor to run both Column and Row signals are needed Candy trays use 2 row lines for control The motors are organized in terms of odds and evens The even numbered row is connected to all even numbere...

Страница 17: ...s through two resistors and two diodes and is sent back to the controller Both Cycle Sense lines Cycle 1 Odd and Cycle 0 Even are considered to be ON telling the con troller that the motor and therefore the tray is present The ground is also applied to the motor but since 24 vdc power is not yet present the motor does not turn Once the controller has verified the motor is present 24 vdc is applied...

Страница 18: ...ck on the Cycle 0 Even diode The diode is again reverse biased removing the ground from the Cycle 0 Even line turning it OFF The controller then shuts down the Column and Row drivers then the vend is complete A five second total time limit is set for a vend and if the motor does not return home within that time power is removed from that motor and the selection is recorded as a jammed motor G Mult...

Страница 19: ...e main office computer provides data analysis and planning capabilities for the individual machines of the entire route 11 The DEX hardware interface is built directly into the main controller on P I E controllers so no additional electronics are needed The DEX function is built into the standard soft ware A DEX data cable is the only additional component that needs to be added to a stan dard mach...

Страница 20: ...ystem is not installed or if you do not wish it to be used b OPTIONAL or MUST If OPTIONAL is selected operation will revert to nor mal home switch operation if the SureVend system cannot operate normally because of an obstruction or loss of communication If MUST is selected the machine will be operational only if the SureVend system is operational for the main delivery area not including gum mint ...

Страница 21: ... to position both test leads at once Instead use an insulated slip on alligator clip to attach one of the test leads to the neutral or ground lead of the circuit a bare green or white lead or a piece of bare metal that is attached to the chassis of the machine Then check for high voltage using the remaining probe This helps prevent you from accidentally touching a hot wire because you only need to...

Страница 22: ...ould tell you what to look for CAUTION Never connect the test leads to a source of voltage while the selector is set to Ohms Ω Otherwise damage to your multimeter could result 6 Touch the test leads across the circuit you want to measure or remove one of the leads of the component you want to measure from its circuit and touch the test leads across the component The resistance value appears If you...

Страница 23: ...g the cir cuit is continuous or shorted Otherwise look for a low resistance reading on the display C Testing For Proper Input Voltage and Noise 1 Voltage Check Place the leads of a voltmeter across the LINE LIVE and NEUTRAL terminals of the wall receptacle The voltmeter should indicate 110 130 volts ac for 120 volt 60 Hz locations or 220 240 volts ac for 230 volt 50 Hz locations 2 Polarity Check P...

Страница 24: ... tasks in the order suggested referring to the repair procedure wiring diagrams or other resource as directed Table 1 Possible Failures Symptoms SYMPTOM POSSIBLE FAILURE S DO THIS REFER TO Will not accept coins coins fall into the cup Machine configuration 1 Verify that the machine is config ured for the coin mechanism installed Program ming Guide 2 Verify the machine is not set for free vend Equi...

Страница 25: ...DC is present on coin board a If not present replace coin board NOTE Have coin mechanism tested before applying power to new coin board Coin Mechanism on page 49 A 24 VDC changer is used in a 110 VDC appli cation 2 Replace coin mechanism with one of the proper type Coin mechanism will not take one denomination of coin Flight deck is dirty 1 Clean the flight deck Coin mechanism on page 49 Changer i...

Страница 26: ...ne is configured for the validator which is installed Program ming Guide a If necessary configure the machine properly 3 Check for proper switch settings on the validator Validator s User Manual Equipment failure 4 Check for proper connections and for proper power Replace appro priate items one by one until prob lem is solved a Replace the validator Bill Validator on page 51 b Replace the harness ...

Страница 27: ...ator on page 51 b Replace the harness from the validator to the main controller PCB c Replace the main controller PCB Controller Board on page 39 Status LED on controller board does not blink power LED is illu minated Bad EPROM 1 Replace EPROM with a known good one EPROM replacement on page 2 Bad RAM or con troller board 2 Replace controller board Controller Board on page 39 Power LED is not illum...

Страница 28: ... Bad RAM or EPROM Test for 24VACCJ37 replace One or several selection s will not vend 1 Swap the affected tray with a known good one Program ming Guide Failure on the affected tray 2 If the problem moves with the tray check all connections on the tray board and motors Check the tray harness for proper continuity a Replace the tray harness Tray Rails on page 45 b Replace tray PCB Tray Rails on page...

Страница 29: ...ard on page 40 All odd or all even motors do not run Loose connections 2 Check all connectors and harnesses between the tray and the interface PCB for proper continuity a Replace bad harness es b Replace the Interface Board if harnesses check good Interface Card on page 40 3 Check the tray harness for proper continuity a Replace the tray harness if nec essary Tray Rails on page 45 Table 1 Possible...

Страница 30: ...the controller PCB Setup and Operator s Guide 4 Check connectors and harnesses between the power panel and con troller PCB Replace suspect com ponents a Power panel Power Panel Assembly page 37 b Controller PCB Controller Board on page 39 c Harnesses d Display PCB DisplayPCB on page 41 Keypad isworking erratically Unplug one key pad 1 Unplug first keypad if good then disconnect and check the secon...

Страница 31: ...es as needed Spirals turn half way then stop Possible loose connections 1 Check connections on tray rail PCBs and interface PCB Swap the trays to see if problem still exists 2 Check the harness between the tray rail PCBs and the interface PCB for proper continuity As needed a Replace affected harness es b Replace the interface PCB Tray Rails on page 45 Interface Card on page 40 Multiple selec tion...

Страница 32: ...ivery pan door is jam ming Gear s are stripped or not properly timed 1 Replace affected gear s 2 Set timing must be done after gear replacement Set Timing of the Rotary Vend Door on page 53 Table 2 Possible Failures Diagnostic Messages DIAGNOSTIC MESSAGE FAILURE DO THIS REFER TO AJP XXX MN DY HR MN The SureVend anti jackpot feature has been implemented Program Guide CARD COMM Incomplete card reade...

Страница 33: ... ON PAGE 10 UNDER KEYPADS SECTION Communications interrupted between main controller and interface PCB J Comm main PCB not talking to coffee PCB or communicat ing RC 3 only 1 Check continuity of the cable between the above connectors a If cable checks bad replace cable b Replace main controller PCB Controller Board on page 39 c Replace interface PCB Interface Card on page 40 CPL ERROR Tray message...

Страница 34: ...e validator Bill Validator on page 51 DBV SENSOR One of the sensors in the bill validator has failed 1 Check for bill stuck in the accep tance path a Remove bill then cycle machine power OFF then ON 1 If no bill is present replace the val idator a Cycle machine power OFF and then ON Bill Validator on page 51 DBV STACKR The stacker is open or removed 1 Install the stacker correctly The stacker is f...

Страница 35: ...r section 2 Check the coin mechanism for a jam in this position 3 Insert coins and cycle machine power OFF and then ON MECH ROM Coin mech ROM has failed 1 Replace the coin mechanism Coin Mechanism on page 49 MECH SENSOR Coin mech reporting a bad tube sensor 1 Replace the coin mechanism Coin Mechanism on page 49 NO ERRORS No errors are detected machine is ok NO MECH Machine is config ured for coin ...

Страница 36: ...2 If problem persists replace con troller board Controller Board on page 39 ROM ERROR Error in the program ming EPROM 1 Clear RAM on page 54 2 If problem persists replace EPROM EPROM Replace ment on page 2 3 If problem persists replace con troller board Controller Board on page 39 SV EMPTY NN Selection NN was marked as empty by the SureVend sys tem because a product delivery was not detected 1 Che...

Страница 37: ...dator is sensed 1 Check programming Program ming Guide 2 Check switches on coin mecha nism 3 Check connectors on validator main control board and coin Inter face Board a Replace validator Bill Validator on page 51 b Replace main controller Controller Board on page 39 Table 2 Possible Failures Diagnostic Messages Continued DIAGNOSTIC MESSAGE FAILURE DO THIS REFER TO ...

Страница 38: ...likely continue to jam 6 Check tray lists a T stands for the tray level C stands for the column number Program ming Guide 7 Check for tray error by swapping the tray with a known good tray a Check wiring harness on the tray b Check the board on the back of the tray 8 Check the harness between the connector and the interface PCB for continuity 9 Check the connectors on the inter face PCB and the ma...

Страница 39: ...heck that the terminal block is in the correct position and is in good contact with the tray 3 Check the tray interface PCB to see if it is installed upside down 4 Check the harness to the Interface Board for continuity a If the harness checks bad replace the harness b If the harness checks good replace the interface PCB Interface Card on page 40 Table 2 Possible Failures Diagnostic Messages Conti...

Страница 40: ...edures 1 General Information These procedures are intended to aid in removing and replacing some major assemblies in your merchandiser Some things to remember Unless you are testing for voltages ALWAYS UNPLUG YOUR MERCHANDISER PRIOR TO STARTING WORK Always follow proper shop practices Get help when lifting heavy objects ...

Страница 41: ... 1670065 A Power Panel Assembly Removal CAUTION Prior to working on the machine be sure it is unplugged from its power source 1 Remove one screw figure 4 Save the screw for later use 2 Tilt the power panel out from the machine and lift straight up figure 5 Figure 4 Figure 5 ...

Страница 42: ...tach then disconnect them figure 6 Replacement 1 Connect all harness to their proper con nectors figure 6 2 Hook the lower edge of the power panel onto the bottom of the cutout in the mon etary panel 3 Tilt the power panel up until the top lip is against the monetary panel 4 Secure with the screw you removed ear lier Figure 6 ...

Страница 43: ... the controller board figure 8 Save the screw for later use 5 Lift straight up on the controller board until the standoffs are free from the keyed holes in the monetary panel 6 Make note of the locations of all har nesses then remove the harnesses from the board Replacement NOTE Observe proper ESD proce dures See Preventing Cir cuit Board Damage from Electrostatic Discharge on page 1 1 Connect all...

Страница 44: ...ack 3 Turn it 90 degrees to remove from the machine 4 Remove one screw as shown from the interface board figure 8 Save the screw for later use 5 Lift straight up on the interface board until the standoffs are free from the keyed holes in the monetary panel 6 Make note of the locations of all har nesses then remove the harnesses from the board Replacement 1 Connect all harnesses to the circuit boar...

Страница 45: ...uit board cover into place turn it so that it faces out ward 2 Hook the holes in the circuit board cover over the screws Tighten the screws A Display PCB Removal 1 Remove one screw from the side of the monetary door figure 11 Save this screw for later use 2 Remove the display PCB cover Figure 10 Figure 11 ...

Страница 46: ...new display PCB and lightly tighten the two screws removed earlier 2 Looking through the tinted display cover make sure the display is straight centered and fully visible CAUTION The screws you are about to tighten are in plastic so don t overtighten them or you will strip the threads in the plastic 3 When you are satisfied the display is correct fully tighten the two screws 4 Connect all harnesse...

Страница 47: ... screws securing the faceplate were removed with the display PCB 4 Before you remove the faceplate from the front of the monetary door put one or two pieces of masking tape across the display window and the instruction insert to keep them from falling out figure 15 5 Slowly remove the faceplate from the top as shown figure 15 6 Work the keypad ribbon cable through its slot to completely remove the...

Страница 48: ...nstall the new keypad membrane Observe that it is marked TOP and BOTTOM figure 17 Be sure you have oriented it properly 2 Install the metal backing plate ensur ing that the notch in one side corre sponds to the keypad ribbon cable figure 18 3 Secure the backing plate with the 4 nuts removed earlier taking care not to strip the plastic studs 4 Feed the keypad ribbon cable through the slot in the mo...

Страница 49: ...lease the rear portion Replacement 1 Hook the rear portion of the rail into the rear bracket 2 Hook the front of the rail into the corre sponding slot on the front bracket 3 Secure with the screw you removed earlier 4 If you are replacing the right hand rail re connect the tray harness to the rail PCB 5 Replace the tray See the procedure in the Setup Guide B Gum and Mint Unit Removal 1 While suppo...

Страница 50: ...nd mint motor assembly Replacement 1 Lift the gum and mint motor assembly into place 2 Secure with 4 screws previously removed 3 Connect the wiring harness to the motor assembly B SureVend System Removal NOTE To aid in reassembly keep track of where all parts particularly harness clips and harnesses are posi tioned prior to disassembly 1 Disconnect all SureVend wiring har nesses from the circuit b...

Страница 51: ...gure 21 Remove the cover and save for later use CAUTION Observe proper ESD proce dures See Preventing Cir cuit Board Damage from Electrostatic Discharge on page 1 4 Remove 5 Phillips head screws and remove the emitter circuit board and paper insulator figure 21 Save for later use 5 Remove 2 hex head screws securing the emitter bracket to the door and the delivery pan figure 21 Save for later use 6...

Страница 52: ...o the door with 1 hex head screw 3 Install the receiver bracket and secure with 2 hex head screws one into the delivery pan one into the door CAUTION Observe proper ESD procedures See Preventing Circuit Board Damage from Electrostatic Discharge on page 1 4 Install the receiver circuit board and paper insulator using 5 Phillips head screws 5 Hook the slot in the receiver cover over the tab on the e...

Страница 53: ...or later use 4 Lift the delivery pan up and toward you to remove Replacement 1 Hook the top of the delivery pan under the lower panel assembly and rest it on the welded hat section inside the door 2 Secure the delivery pan to the door with 3 hex head screws on each side 3 If no SureVend system is to be installed attach the upper deflector with the 2 hex head screws removed earlier 4 If so equipped...

Страница 54: ...r to gain access to the upper screw figure 27 5 Loosen 3 hex head slotted screws as shown figure 28 6 Lift up slightly on the coin mechanism and remove it from the machine Replacement 1 Hook the keyway holes in the rear of the coin mechanism on the 3 hex head slotted screws loosened earlier figure 29 Lower the coin mechanism into place 2 Tighten the 3 screws Figure 27 Figure 28 ...

Страница 55: ...sconnect the bill validator wiring harnesses from the machine 2 Remove the 3 nuts Optional 4th nut See Note as shown See figure 30 Save the nuts for later use NOTE It may be easier to access the nuts if you remove the stacker section 3 Remove the bill validator Replacement 1 Position the bill validator in place 2 Secure with the 3 nuts Removal of 4th nut is Optional See Note you removed previously...

Страница 56: ...lat bladed tool carefully pry the mainte nance keypad off the monetary door figure 32 4 Feed the ribbon cable out through the slot in the monetary door figure 32 Replacement 1 Feed the new maintenance keypad s ribbon cable through the slot in the monetary door figure 32 2 Apply the new maintenance keypad to the monetary door with the included self stick tape 3 Connect the ribbon cable to the displ...

Страница 57: ...e with the rotary door center 3 Remove the pinion gear bushing and nut 4 Rotate the pinion gear until timing marks B and C are in line with timing marks A and D 5 Reinstall the pinon gear bushing and nut 6 Reinstall the right end plate 7 Repeat steps 1 through 6 for the left end 8 Verify that the timing is still correct ROTARY DOOR CENTER TIMING MARK D TIMING MARK C PINION GEAR TIMING MARK A TIMIN...

Страница 58: ...i nates accumulated sales totals and any custom programming YOU DO NOT WANT TO DO THIS TO A MACHINE WHICH HAS NOT HAD ITS CONTROL LER BOARD CHANGED Unless you enjoy doing a lot of unnecessary program ming that is Clearing RAM Procedure 1 The machine must be on and in ready mode This is when a message any message or part of one is scrolling across the display Press two times 2 While holding press o...

Страница 59: ...rostatic Discharge ESD 1 Clearing RAM Procedure 54 Connector 9 Controller Board 39 Removal 39 Replacement 39 Cycle Sense lines 13 D Data stream 9 DC 6 DC AC Voltage 17 Delivery Pan Assembly 49 Removal 49 Replacement 49 DEX 7 14 15 Overview and Capabilities 14 Display PCB 41 Removal 41 Replacement 41 E ELECTROSTATIC DISCHARGE ESD 1 EMI Filter 4 5 6 EPROM 1 2 6 14 22 23 24 32 Eprom Replacement 2 G G...

Страница 60: ...rcuit Breaker 5 Main Switch 4 Double Pole 4 Interlock Switch 10 Single Throw 4 Maintenance Keypad 52 Removal 52 Replacement 52 Matrix 12 Selection 11 Message 28 Motor 12 Motor Matrix 12 Multi Drop Bus 7 8 Multi Drop Bus MDB 14 O Overall Merchandiser 4 Over current protection 5 P PCB 1 Polarity 4 Port 6 Service 11 Ports Customer 11 Possible Failures Diagnostic 28 Power Checks 4 Power Circuit 4 7 Po...

Страница 61: ... Single Throw 4 Surevend System 46 Removal 46 Replacement 46 Switch 10 Door 11 Interlock 10 System 10 Detection 16 Disable 16 Display 10 Malfunction 16 Matrix 10 SureVend 49 T Test Equipment 17 Display hold 17 Measuring 17 Measurments 17 Multimeter 17 Ohms 17 Range Hold 17 Resistance 17 Theory of Operation 4 Transformer 4 5 7 Tray Rails 45 Removal 45 Replacement 45 U Using A Multimeter 17 V Valida...

Страница 62: ... 13 Using A Multimeter 17 General Information 36 Power Panel Assembly 37 Removal 37 37 37 Replacement 38 38 Controller Board 39 Removal 39 Replacement 39 39 39 Interface Card 40 Removal 40 Replacement 40 40 Display PCB 41 Removal 41 41 41 Replacement 42 42 42 Selection Keypad 43 Removal 43 43 43 Replacement 44 44 44 44 Tray Rails 45 Removal 45 Replacement 45 Gum and Mint Unit 45 Removal 45 Replace...

Страница 63: ...ement 46 SureVend System 46 Removal 46 46 46 Replacement 47 47 47 Delivery Pan Assembly 49 Removal 49 Replacement 49 Coin Mechanism 49 Removal 49 49 49 Replacement 50 50 50 Bill Validator 51 Removal 51 Replacement 51 51 51 Maintenance Keypad 52 Removal 52 Replacement 52 52 52 Set timing of the Rotary Vend Door 53 53 Clearing RAM Procedure 54 ...

Страница 64: ...Notes ...

Страница 65: ...y to A electrical components wiring or circuits and or for all mechanical parts or assemblies damaged as a result of operating the Merchandiser at other than the design voltage and frequency specified on the Electrical Rating Tag or B in event of vandalism fire or negligence or C incandescent lamps neon lamps fluorescent lamps ballasts starters or other expendable items or D when other manufacture...

Страница 66: ......

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