Crystal CastlesTM Troubleshooting Guide
Contents
1. Crystal Castles Troubleshooting Guide SP 241 Ist printing e Crystal Castles Troubleshooting Guide Crystal Castles Troubleshooting with the CAT Box Troubleshooting with the Read Write Controller A 1 Nw wR wd N 10 11 I CAT Box Preliminarv Set Up Remove the electrical power from the game and the CAT Box Remove the wiring harness from the game PCB Remove the game PCB from the game cabinet Remove Microprocessor 2C from the game PCB Connect the harness from the game to the game PCB Connect together the 0 and 2 test points on the game PCB with the shortest possible jumper Connect the WDDIS test point to ground Connect the CAT Box flex cable to the game PCB edge test connector Apply power to the game and to the CAT Box Set CAT Box switches as indicated a TESTER SELF TEST OFF b TESTER MODE R W Press TESTER RESET Connect the DATA PROBE to the CAT Box Connect the DATA PROBE ground clip to a game PCB ground test point B Checking the Address Lines 1 2 Perform the CAT Box preliminary set up Set CAT Box switches as indicated a BYTES 1 b PULSE MODE UNLATCHED c R W MODE OFF d R V READ Key in the address pattern given in Table 1 use AAAA to start with the CAT Box keyboard Set R W MODE to STATIC Probe each IC pin listed in Table 1 with the DATA PROBE and check that the CAT Box 1 or O LED for the correspond ing address line li2. off 98 55 Custom Audio I O Chip 4D 98 AF channel 2 produces pure tone 98 00 Custom Audio I O Chip 4D channel 2 turns off 9A 00 Custom Audio I O Chip 4B 9A 03 channel 1 produces pure tone 9A 55 9A AF 9A 00 Custom Audio I O Chip 4B channel 1 turns off 9A 55 Custom Audio I O Chip 4B 9A AF channel 2 produces pure tone 9A 00 Custom Audio I O Chip 4B channel 2 turns off Crystal Castles F Checking the Player Switch Option Switch and Trak Ball Inputs Perform the CAT Box preliminary set up 4 For each address listed in Table 5 do the following Troubleshooting Guide G Checking the Coin Counter and Trak Ball Light Perform the CAT Box preliminary set up 2 Set CAT Box switches as indicated a DBUS SOURCE DATA b BYTES 1 c R W WRITE d R W MODE OFF 3 Enter the address in Table 5 with the keyboard CAUTION If you write ON data to activate a solenoid deacti vate the solenoid immediately by writing the OFF data If you leave a solenoid activated for more than 10 seconds you may have to replace the solenoid and or its driver due to overheating a To activate the output e Press DATA SET e Enter the ON data with the keyboard e Set R W MODE to STATIC and back to OFF b To deactivate the output e Press DATA SET e Enter the OFF data with the keyboard e Set R W MODE to STATIC and back to OFF Table 5 LED and Coin Counter Outputs Address On Off Output De
3. ated a R W MODE to PULSE and back to OFF b R W to READ c R W MODE to PULSE and back to OFF If the CAT Box reads an address that doesn t compare with that written the COMPARE ERROR LED will light up The ADDRESS SIGNATURE display of the CAT Box will show the failing address location and the ERROR DATA DISPLAY switch is enabled Using this switch determine ifthe error is in the high order or low order RAM Repeat this test with DBUS SOURCE set to ADDR Set the CAT Box switches as indicated a BYTES 256 b DBUS SOURCE ADDR Cc R W OFF d R W WRITE Repeat parts 5 through 6 to check addresses from 1000 through 8FFF NOTE The two custom audio I O chips must be tested sep arately by performing the self test substituting a known good part or performing the following procedure Crystal Castles E Checking the Custom Audio I O Chips Perform the CAT Box preliminary set up Set CAT Box switches as indicated a BYTES 1 b R W WRITE c R W MODE OFF Enter the address from Table 3 with the keyboard Press DATA SET and enter the data from Table 3 with the keyboard Set R W to PULSE and back to OFF Repeat parts 3 through 5 for each address and data listed in Table 3 Check for the response indicated Table 3 Custom Audio i O Chips Address Data Test Results 98 00 Custom Audio I O Chip 4D 98 03 channel 1 produces pure tone 98 55 98 AF 98 00 Custom Audio I O Chip 4D channel 1 turns
4. ghts up Repeat parts 2 c through 5 using address 5555 in part 3 Table 1 Address Lines Logic State for IC Pin Logic State for Address AAAA Address 5555 BA15 1 1B3 0 BAl4 0 1B5 1 BA13 1 187 0 BA12 0 1B9 1 BAll 1 1B12 0 BAIO 0 1B14 1 BA9 1 1B16 0 BA8 0 1B18 1 BA7 1 1C9 0 BA6 0 1C7 1 BAS 1 105 0 BA4 0 1C3 1 BA3 1 1C12 0 BA2 0 1C14 1 BAI 1 1C16 0 BAO 0 1C18 1 C Checking the Data Lines So eS N Perform the CAT Box preliminary set up Set CAT Box switches as indicated a BYTES 1 b R W MODE OFF Cc R W WRITE Key in address 0000 with the keyboard Press DATA SET Key in data AA with the keyboard Set R W MODE to STATIC Probe each IC pin listed in Table 2 with the DATA PROBE and check that the CAT Box 1 or 0 LED for the correspond ing address line lights up Set R W MODE to OFF Repeat parts 4 through 6 using data 55 in part 4 Troubleshooting Guide Table 2 Data Lines Logic State for IC Pin Logic State for Data AA Data 55 D7 2E 11 0 D6 0 2E 12 1 D5 1 2E 13 0 D4 0 2E 14 l D3 1 2E 15 0 D2 0 2E 16 1 DI 1 2E 17 0 DO 0 2E 18 1 BD7 1 2E 9 0 BD6 0 2E 8 1 BD5 1 2E 7 0 BD4 0 2E 6 1 BD3 1 2E 5 0 BD2 0 2E 4 1 BDI 1 2E 3 0 BDO 0 2E 2 1 D Checking the RAM 1 2 Perform the CAT Box preliminary set up Set CAT Box switches as indicated a DBUS SOURCE ADDR b BYTES 1024 c RAW MODE OFF d R W WRITE Enter address 0003 with the keyboard Setthe CAT Box switches as indic
5. r ifa problem exists within the microprocessor circuit If the self test fails to run it is a good practice to check the RESET line RESET is a microprocessor input pin 40 In a properly Operating game reset should occur during power up or when the RESET test point is grounded A pulsing RESET line indicates that something is causing the microprocessor to lose its place within the program Typical causes are 1 Open or shorted address or data bus lines Crystal Castles 2 Bad microprocessor chip 3 Bad bus buffers 4 Bad ROM 5 Bad RAM 6 Any bad input or output that causes an address or data line to be held in a constant high or low state A pulsing RESET signal indicates a problem exists somewhere within the microprocessor circuitry To aid in troubleshooting the WDDIS test point can be connected to a ground test point to prevent resets This will sometimes allow the Self Test to be used to diagnose the failure during a RESET condition
6. vice Data Data 9E86 FF 00 Left Coin Counter 9E85 FF 00 Right Coin Counter 9E80 FF 00 Trak Ball Light 2 Set CAT Box switches as indicated a BYTES 1 b R W WRITE c R W MODE OFF 3 Enter address 9600 with the keyboard 4 Press DATA SET and enter data FF with the keyboard 5 Set R WE to PULSE and back to OFF 6 For each entry listed in Table 4 do the following a Set R W MODE to OFF b Set R WWRITE c Enter the first address with the keyboard d Press DATA SET andenter the data for that address with the kevboard e Set R W MODE to PULSE and back to OFF f Set R W to READ g Enter the next address h Set R W MODE to STATIC i Activate the input switch or signal indicated in Table 4 and check the test result j Set R W MODE to OFF k Repeat parts g through j for each subsequent address given for the entry Table 4 Player Switches Option Switches and Trak Ball Inputs Address Input Test Results Switches Signals 9400 Trak Ball VERT 9401 Trak Ball HORIZ 9402 Trak Ball VERT Player 2 9403 Trak Ball HORIZ Player 2 9600 DO COINR D1 COIN L D2 COIN AUX D3 SLAM D4 SELF TEST DS SPARE D6 JMP1 D7 JMP2 00 9A0B SW2 DO Read switches at address 9A08 DATA display changes when any of these switches or signals are activated SW3 DI SW4 D2 Troubleshooting Guide Troubleshooting the Watchdog Circuit The Watchdog circuit will send continuous reset pulses to the microprocesso
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