Crane Snack Eenter I Troubleshooting & Repair Manual
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Crane Snack Eenter I Troubleshooting & Repair Manual

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Summary of Contents for Crane Snack Eenter I

  • Page 3: Table Of Contents

    Snack - Based Troubleshooting and Repair Guide Table of Contents General Information............1 Preventing Circuit Board Damage From Electrostatic Discharge.
  • Page 4 Snack - Based Troubleshooting and Repair Guide Table of Contents Gum and Mint Unit ............45 Removal .

  • Page 5: General Information

    Snack - Based Troubleshooting and Repair Guide Section I. General Information 1. Preventing Circuit Board Damage From Electrostatic Discharge Electronic printed circuit board assemblies are susceptible to physical damage, for example, bro- ken components due to rough handling. In addition, printed circuit board assemblies (and their components, such as EPROMs) are subject to damage by various types of static electricity.

  • Page 6: Eprom Replacement

    Snack - Based Troubleshooting and Repair Guide 2. EPROM Replacement CAUTION: Do not remove the new EPROM from its shipping carton until you are ready to use it. CAUTION: Observe Electrostatic Discharge precautions to protect the electronics from damage while they are being handled. Wear a grounded wrist strap connected to any unpainted metal part of the machine.
  • Page 7 Snack - Based Troubleshooting and Repair Guide Figure 1 September, 2002 Page 3 of 54 1670065...

  • Page 8: Theory Of Operation

    Snack - Based Troubleshooting and Repair Guide Section II. Theory of Operation 1. Overall Merchandiser A. Power Circuit 1. The power circuit for the basic snack merchandiser consists of the following components: Power Cord Electronic Breaker Main Switch Coin Power Board (Optional) EMI Filter Main Circuit Breaker Transformer...

  • Page 9: Coin Power Board(Optional)

    Snack - Based Troubleshooting and Repair Guide 5. Main Circuit Breaker a. The main circuit breaker is placed in line just after the main switch. The main circuit breaker is designed to protect the merchandiser from over-current conditions that may be produced at the wall outlet in the electrical circuitry of the location.

  • Page 10: Main Controller

    Snack - Based Troubleshooting and Repair Guide a. 120 vac is tapped from the output of the EMI Filter and is input at pins 1 and 2 of con- nector J25. On the board, this ac voltage goes through the series of diodes D1-D4 (full wave rectifier), and is output as 120 volts dc at pins 3 and 4 of J25.
  • Page 11 Snack - Based Troubleshooting and Repair Guide ductor ribbon cable connected at J55 of the Interface Board (see Interface Board). Tray status and other conditions including the status of rail boards as well as all other peripherals connected to the Interface Board are monitored here. Operational com- mands for peripherals are sent and received via this port using a serial data stream.

  • Page 12: Interface Board

    Snack - Based Troubleshooting and Repair Guide CAUTION:: See Multi-Drop Bus (MDB) on page 14 for more information. a. J40 Dumb Coin Mechanism Port. 24 volt unregulated dc is supplied at pins 11 and 12 for power to 24 volt coin mechanisms. Pin 6 (reset) is used to identify the presence of a dumb coin mechanism to the merchandiser.
  • Page 13 Snack - Based Troubleshooting and Repair Guide 2. The connector configuration for the Interface Board is as follows: a. J55 Data Transfer Port. Data is transferred to and from the Interface Board and main controller boards at this connector. The data transfer is accomplished by way of a 16- conductor ribbon cable connected at J30 of the main controller board.

  • Page 14: Interlock Switch

    Snack - Based Troubleshooting and Repair Guide passed through regulator circuit REG1, where it is regulated for use by the driver cir- cuits. h. J62 Coffee Controller Power Connector. Not used in this machine. i. J63 Can Module Connector. Not used in this machine. B.

  • Page 15: Selection Matrix

    Snack - Based Troubleshooting and Repair Guide 3. As with the selection system, the displays are strobed. Each digit is turned on and off 60 times each second. This fast strobing allows the display to be turned on one digit at a time, but at a rate so fast that the display is seen as showing complete words and numbers.

  • Page 16: Motor Matrix

    Snack - Based Troubleshooting and Repair Guide Each Column line receives a signal from the control board. These lines are strobed 60 times per second so that when column 1 is on, all other column lines are off. When column 1 turns off col- umn 2 line turns on, and so on through each of the Column lines.
  • Page 17 Snack - Based Troubleshooting and Repair Guide c. Because a vend cycle is determined by one complete revolution of a snack motor, the machine must have a method of determining whether or not the motor has made that revolution (ending back in the “home” position). This is done through a series of two Cycle Sense lines.

  • Page 18: Multi-Drop Bus (Mdb)

    MDB capability can be added to an existing PIE machine by adding the MDB cable (cable P/N 1679054) and the appropriate MDB software (EPROM). 4. DEX Overview and Capabilities NOTE: Availability on all Crane Snack-Based equipment. 1670065 Page 14 of 54 September, 2002...

  • Page 19: Surevend

    Snack - Based Troubleshooting and Repair Guide 5. DEX (pronounced “decks”) is an electrical interface which connects a vending machine to an external computer (or hand held device). The interface has a standardized set of data and transmission protocol. This standardized interface allows any portable data collection device using this protocol, to communicate with a DEX equipped machine.
  • Page 20 Snack - Based Troubleshooting and Repair Guide 2. The vending machine controller then starts the delivery motor and constantly checks the SureVend™ system for detection of the delivered product. 3. If no product delivery is detected, the controller continues to run the delivery motor for up to three revolutions, pausing momentarily at the home position of each revolution of the motor.

  • Page 21: Test Equipment

    Snack - Based Troubleshooting and Repair Guide Section I. Test Equipment 1. Using A Multimeter A. General Information Warning! Some test points you will be measuring carry high voltages. Take care to avoid contact with those points to avoid personal injury or death. Make sure your mul- timeter is set to the correct function for the measurement you are taking, other- wise damage to the multimeter could result.

  • Page 22: Measuring Resistance

    Snack - Based Troubleshooting and Repair Guide Measuring Resistance The resistance measuring circuit in your meter compares the voltage gained through a known resistance (internal) with the voltage developed across an unknown resistance. 4. Remove all power from the circuit under test and discharge all capacitors. 5.

  • Page 23: Testing For Proper Input Voltage And Noise

    Snack - Based Troubleshooting and Repair Guide Checking Continuity You can use the multimeter to check for shorted or open electrical circuits. 1. Remove all power from the circuit under test and discharge all capacitors. 2. Set the selector to Ohms (Ω). 3.

  • Page 24: Identifying Failures

    Snack - Based Troubleshooting and Repair Guide Section I. Identifying Failures This section contains two tables of possible failures. When your merchandiser does not work properly, you will either know which part is failing, or you will see a diagnostic message in the display, or both.
  • Page 25 Snack - Based Troubleshooting and Repair Guide Table 1. Possible Failures (Symptoms) - Continued POSSIBLE SYMPTOM DO THIS: REFER TO: FAILURE(S) Coin mechanism Equipment failure. 1. Check for proper power to the coin does not pay out at mechanism. all. Coin a.
  • Page 26 Snack - Based Troubleshooting and Repair Guide Table 1. Possible Failures (Symptoms) - Continued POSSIBLE SYMPTOM DO THIS: REFER TO: FAILURE(S) Multiple errors Bad EPROM or Controller 1. Clear RAM following an elec- main controller or Board on 2. Replace main controller. trical storm.
  • Page 27 Snack - Based Troubleshooting and Repair Guide Table 1. Possible Failures (Symptoms) - Continued POSSIBLE SYMPTOM DO THIS: REFER TO: FAILURE(S) Validator takes 1. Verify the machine is configured bills then rejects for the validator which is installed. Improper Program- them.
  • Page 28 Snack - Based Troubleshooting and Repair Guide Table 1. Possible Failures (Symptoms) - Continued POSSIBLE SYMPTOM DO THIS: REFER TO: FAILURE(S) No display. 1. Disconnect everything but the dis- play and its power input. If the display works again, re-connect items one by one until the problem Bad display PCB.
  • Page 29 Snack - Based Troubleshooting and Repair Guide Table 1. Possible Failures (Symptoms) - Continued POSSIBLE SYMPTOM DO THIS: REFER TO: FAILURE(S) Two or more 1. Inspect tray harness. Replace if Bad tray harness. selections run at needed. the same time. Interface (Selections are not Bad interface card.

  • Page 30: Maintenance Keypad

    Snack - Based Troubleshooting and Repair Guide Table 1. Possible Failures (Symptoms) - Continued POSSIBLE SYMPTOM DO THIS: REFER TO: FAILURE(S) Selection keypad If the display func- 1. Unplug one keypad to see if the Selection does not respond tions properly... other keypad is functioning prop- Keypad on or beep.
  • Page 31 Snack - Based Troubleshooting and Repair Guide Table 1. Possible Failures (Symptoms) - Continued POSSIBLE SYMPTOM DO THIS: REFER TO: FAILURE(S) 1. Check the monetary door switch for proper operation. Replace as Only certain rows needed. of buttons work on selection keypad.

  • Page 32: Set Timing Of The Rotary Vend Door

    Snack - Based Troubleshooting and Repair Guide Table 1. Possible Failures (Symptoms) - Continued POSSIBLE SYMPTOM DO THIS: REFER TO: FAILURE(S) 1. Disconnect tray motors one at a time and try to isolate the faulty motor. Multiple selec- 2. Check for pinched or shorted tions run and do wires.
  • Page 33 Snack - Based Troubleshooting and Repair Guide Table 2. Possible Failures (Diagnostic Messages) - Continued DIAGNOSTIC FAILURE DO THIS: REFER TO: MESSAGE Incomplete card reader communica- CARD.F.COMM tions. (The card Check cables. reader is not opera- tional.) Bill Card reader has 1.
  • Page 34 Snack - Based Troubleshooting and Repair Guide Table 2. Possible Failures (Diagnostic Messages) - Continued DIAGNOSTIC FAILURE DO THIS: REFER TO: MESSAGE Incomplete bill valida- 1. Check harness(es). tor communications. DBV.COMM Bill Bad bill validator. 2. Replace bill validator. Validator on page 51 1.
  • Page 35 Snack - Based Troubleshooting and Repair Guide Table 2. Possible Failures (Diagnostic Messages) - Continued DIAGNOSTIC FAILURE DO THIS: REFER TO: MESSAGE Selection Keypad on page 43., or 1. Disconnect each keypad in turn. KEYPAD XY Keypad problem. Mainte- a. Replace affected keypad. nance Keypad on page 52.
  • Page 36 Snack - Based Troubleshooting and Repair Guide Table 2. Possible Failures (Diagnostic Messages) - Continued DIAGNOSTIC FAILURE DO THIS: REFER TO: MESSAGE Program- 1. Check time-of-day or tray list. ming Guide No selection is ready NONE 1. Disconnect all trays. to vend.
  • Page 37 Snack - Based Troubleshooting and Repair Guide Table 2. Possible Failures (Diagnostic Messages) - Continued DIAGNOSTIC FAILURE DO THIS: REFER TO: MESSAGE SERIAL VAL An error message Program- 1. Check programming. from the validator is ming Guide (SEE NOTE: sensed. ON PAGE 10 2.
  • Page 38 Snack - Based Troubleshooting and Repair Guide Table 2. Possible Failures (Diagnostic Messages) - Continued DIAGNOSTIC FAILURE DO THIS: REFER TO: MESSAGE TC ERROR An error is detected in If the message “Fault Test” is dis- a motor circuit. played: (SEE NOTE: 1.
  • Page 39 Snack - Based Troubleshooting and Repair Guide Table 2. Possible Failures (Diagnostic Messages) - Continued DIAGNOSTIC FAILURE DO THIS: REFER TO: MESSAGE TRAY The cabinet door is Program- 1. Check programming. closed and a pro- ming Guide LATCHED grammed tray is not 2.

  • Page 40: Removal And Replacement Procedures

    Snack - Based Troubleshooting and Repair Guide Section V. Removal and Replacement Procedures 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.

  • Page 41: Power Panel Assembly

    Snack - Based Troubleshooting and Repair Guide 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.

  • Page 42: Replacement

    Snack - Based Troubleshooting and Repair Guide 3. Make a note of where all the harnesses attach, 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.

  • Page 43: Controller Board

    Snack - Based Troubleshooting and Repair Guide A. Controller Board Removal NOTE: Observe proper ESD proce- dures. See "Preventing Cir- cuit Board Damage from Electrostatic Discharge" on page 1 1. Loosen one screw at the top and one at the bottom of the circuit board cover (figure 7).

  • Page 44: Interface Card

    Snack - Based Troubleshooting and Repair Guide 1. Hold the circuit board cover vertically and turned at a 90 degree angle to the monetary panel. 2. As you move the circuit board cover into place, turn it so that it faces out- ward.

  • Page 45: Display Pcb

    Snack - Based Troubleshooting and Repair Guide 1. As you move the circuit 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.

  • Page 46: Replacement

    Snack - Based Troubleshooting and Repair Guide 1. Make a note of the locations of all har- nesses going to the display PCB. Remove the harnesses (figure 12). 2. Remove two thread forming screws as shown (figure 13). Save them for later use.

  • Page 47: Selection Keypad

    Snack - Based Troubleshooting and Repair Guide A. Selection Keypad Removal 1. Remove the display PCB. (see “Display PCB” on page 41) 2. Remove the bill validator. (see “Bill Validator” on page 51) 3. Remove 4 screws and cup spacers See (figure 14).

  • Page 48: Replacement

    Snack - Based Troubleshooting and Repair Guide 1. Remove 4 nuts from the rear of the assembly ( (figure 16)). Save them for later use You might need to gently pry up on the metal backing plate as you turn the nuts in case the plastic studs are stripped.

  • Page 49: Tray Rails

    Snack - Based Troubleshooting and Repair Guide A. Tray Rails Removal 1. Remove the tray. See the procedure in the Setup Guide. 2. If you are removing the right hand tray rail, disconnect the tray harness from the rail PCB connector (figure 19). 3.

  • Page 50: Gum And Mint Motors

    Snack - Based Troubleshooting and Repair Guide A. Gum and Mint Motors Removal 1. Disconnect the wiring harness from the gum and mint motor assembly. 2. Remove 2 hex head screws securing each side of the gum and mint motor assembly to the delivery pan (figure 21).

  • Page 51: Replacement

    Snack - Based Troubleshooting and Repair Guide CAUTION: Observe proper ESD proce- dures. See "Preventing Cir- cuit Board Damage from Electrostatic Discharge" on page 1 1. Remove 5 Phillips head screws, and remove the receiver circuit board and paper insulator (figure 20). Save for later use.
  • Page 52 Snack - Based Troubleshooting and Repair Guide CAUTION: Observe proper ESD procedures. See "Preventing Circuit Board Damage from Electrostatic Discharge" on page 1 1. Install the emitter circuit board and paper insulator using 5 Phillips head screws. 2. Hook the slot in the emitter cover over the tab on the emitter bracket. Secure the emitter cover to the door with 1 hex head screw.

  • Page 53: Delivery Pan Assembly

    Snack - Based Troubleshooting and Repair Guide A. Delivery Pan Assembly Removal 1. If so equipped, remove the SureVend™ system. (see “SureVend™ System” on page 46) Remove the upper deflector. 2. If no SureVend™ system is installed, remove 2 hex head screws securing the upper deflector to the door (figure 25).

  • Page 54: Replacement

    Snack - Based Troubleshooting and Repair Guide 4. Loosen 2 hex-head slotted screws on mechanism. You will need to manipu- late the coin return lever to gain access to the upper screw (figure 27). 5. Loosen 3 hex-head slotted screws as shown (figure 28).

  • Page 55: Bill Validator

    Snack - Based Troubleshooting and Repair Guide 3. Feed the harness through the harness bracket (figure 29). Push down on the harness bracket to capture the harness against the top of the coin mechanism. 4. Tighten the 2 hex-head slotted screws. 5.

  • Page 56: Maintenance Keypad

    Snack - Based Troubleshooting and Repair Guide A. Maintenance Keypad Removal 1. Remove the cover from the display PCB. (see “Display PCB” on page 41) 2. Disconnect the ribbon cable from the maintenance keypad to the display PCB (figure 31). 3.

  • Page 57: Set Timing Of The Rotary Vend Door

    Snack - Based Troubleshooting and Repair Guide A. Set timing of the Rotary Vend Door 1. Remove the right end plate (See figure 33). 2. Rotate the delivery door until timing marks "A" and "D" are in line with the rotary door center.

  • Page 58: Clearing Ram Procedure

    Snack - Based Troubleshooting and Repair Guide Snack Center (Models 157, 158, 465, 484, 485, 486, 487, 488, 489) Shoppertron (Model 431) NOTE: When you installed the new controller board, chances are good that its memory (the RAM) is scrambled. If that is the case, you may be locked out of the functions you need to access in order to program the machine.
  • Page 59 Snack - Based Troubleshooting and Repair Guide INDEX AC motors 12 Assembly 1 Assembly 1 Bill Validator 51 Removal 51 Replacement 51 Checking Continuity 19 Polarity 19 Voltage and noise 19 Circuit Board 1 Peventing Damage From Electrostatic Discharge (ESD) 1 Clearing RAM Procedure 54 Connector 9 Controller Board 39...
  • Page 60 Snack - Based Troubleshooting and Repair Guide INDEX Identifying Failures Possible Failures 20 Symptoms 20 Infrared light 15 Interface Board 5, 7, 8, 9, 25, 35 Interface Card 40 Removal 40 Replacement 40 Interlock Switch 10 Keypads 10 Main Circuit Breaker 5 Main Switch 4 Double Pole 4 Interlock Switch 10...
  • Page 61 Snack - Based Troubleshooting and Repair Guide INDEX Preventing 14 Pulse validator 8 Removal and Replacement Procedures 36 Selection 11 Selection Keypad 43 Removal 43 Replacement 43 Set timing of the Rotary Vend Door 53 Single Throw 4 Surevend™ System 46 Removal 46 Replacement 46 Switch 10...
  • Page 62 Snack - Based Troubleshooting and Repair Guide List of Figures Preventing Circuit Board Damage From Electrostatic Discharge..... . 1 EPROM Replacement ............2 .
  • Page 63 Snack - Based Troubleshooting and Repair Guide List of Figures ................45 Gum and Mint Motors .
  • Page 64 Notes...
  • Page 65 This warranty does not include any cost of service rendered or repairs made by customer or it’s agents on Merchandiser, or parts, unless authorization to incur such expense has been given in writing by CRANE MERCHANDISING SYSTEMS prior to incurring such expense. This warranty does not cover labor and service charges performed by CRANE MERCHANDISING SYSTEMS service technicians.

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