TROUBLESHOOTING GUIDE
Contents
1. Repeat steps 2 4 Repeat steps 2 4 entering 0400 on the keypad step f Repeat steps 2 4 entering 2000 on the keypad step f entering 2400 on the keypad step f entering 2800 on the keypad step f Repeat steps 2 4 entering 2C00 on the keypad step f D Option Switch NONANI Inputs Perform the CAT Box preliminary set up BYTES 1 R W READ R W MODE OFF Key in 0D00 R W MODE STATIC Activate the option switches at location N13 while monitoring the DATA DISPLAY The DATA DISPLAY will change if the switches are operat ing properly Repeat steps 4 7 entering O 00 in step 5 and ac tivate switches at location L12 Tempest Troubleshooting Guide E Custom Audio I O Chips NOTE Tempest has two custom audio I O chips Each must be tested separately There are several ways to test the chips e Perform the Self Test e Substitute good part for defective part e Use the procedure that follows Perform the CAT Box preliminary set up BYTES 1 RW WRITE RW MODE OFF Enter address from Figure 3 Press DATA SET Enter the data from Figure 3 R W MODE to PULSE and back to OFF Repeat steps 5 8 for each address and data not ing the test results OPNA YN gt Figure 3 Custom Audio I O Chips ADDRESS DATA TEST RESULTS ADDRESS DATA TEST RESULTS 60CF 00 60DF 00 60CF 03 60DF 03 60C0 55 60D0 55 60C1 AF Custom Au2. 0000 7FFF RW D D D D D OD D D Program RAM 2k 0800 080F Ww D D D D Color RAM 0C00 R D Right Coin Switch ocoo0 R D Center Coin Switch oco0 R D Left Coin Switch ocoo R D Slam Switch ocoo R D Self Test Switch ocoo R D Diag Step Switch 0C00 R D HALT 0Ccoo R D 3KHz 0D00 R D D D D D D D D Option Switch Inputs OE00 R D D D D D D OD D Option Switch Inputs 2000 2FFF RWI D D D D D D D D f Vector RAM 4K 3000 3F FF R D D D D D D D D Vector ROM 4K 4000 W D Right Coin Counter 4000 Ww Center Coin Counter 4000 W Video Invert X 4000 W Video Invert Y 4800 W VG GO 5000 W WD CLEAR 5800 W VG Reset 6000 603F W D EAROM Write 6040 6040 Math Box Read Math Box Start 60C0 60CF 60D0 60DF Dd DdD I HTA aus 60E0 One Player Start 60E0 Two Player Start 60E0 FLIP 9000 DFFF D D D D D OD D D Program ROM 20K Figure 1 Memory Map Tempest Troubleshooting Guide 2 Watchdog The Watchdog circuit will cause continuous reset pulses to the microprocessor if a problem exists within the microprocessor circuit If the self test fails to run it is a good practice to check the reset line RESET microprocessor input pin 40 In a pro perly operating game reset should occur during power up or when the reset push button is activated A pulsing reset line indicates that something is causing the microprocessor to lose its place
3. 7A 70 signature Logic Probe Signal Signature on IC Pin Name Should Be M N 9 DBO A4AC M N 10 DB1 3A7C M N 11 DB2 OF22 MI N 13 DB3 H221 M N 14 DB4 2H07 M N 15 DB5 818A M N 16 DB6 1699 M N 17 DB7 4149 Tempest Troubleshooting Guide 17 CAT Box Settings for ROM7 Test 21 CAT Box Settings for Vector LC P1 for ROM part no 136002 109 121 or ROM Test I C N P3 for part no 136002 111 137 123 or 138 Probe Trigger Testpoint NOTE When taking signatures on IC N P3 ground eae ROM7 IC Pin B3 5 ete ae no Probe Trigger IC Pin Testpoint Start L C1 10 Stop JT C1 10 Clock L 62 18 Signatures Verify CAT Box settings and connections as follows 22 Signatures probe SV 7AL0 Signature Verify CAT Box settings and connections as follows Logic Probe PA S e probe 5V 7A70 signature on IC Pin ame hould Be Logic Probe Signal Signature P1 9 DBO Bee on IC Pin Name Should Be Sa ne ae NIP3 9 DBO H1U9 oo aoe male N P3 10 DBI 5U8C N P3 11 DB2 0C59 P1 op DB4 na N P3 13 DB3 507P Ae nied ae NIP3 14 DB4 2A8P P1 17 DB7 2C3A N P3 15 DB5 9FOC N P3 16 DB6 AH97 N P3 17 DB7 29AH 19 CAT Box Settings for ROMS Test I C R1 for ROM part no 136002 110 or 122 1 C P1 for ROM part no 136002 137 23 CAT Box Settings for Vector ROM1 Test I C R3 for part no 136002 112 Probe Trigger Testpoint or 124 Start E ROME NOTE When taking signatures on I C R3 ground Stop J ROME IC Pin B3 5 Clock 7 o2 Probe Tri
4. Figure 5 OONO MPWN CAUTION You may damage the circuitry of the X Y monitor if you key in the VG GO signal without first checking all the addresses and data Check the data by reading each address location using steps 10 14 10 R W READ 11 RW MODE OFF 12 Key in address or press ADDRESS INC 13 RW MODE PULSE 14 Check the data in the DATA DISPLAY against the data in Figure 5 If you are sure the data is correct proceed to steps 15 19 15 RAW MODE WRITE 16 RW OFF 17 Key in VG GO address 4800 for TEMPEST 18 R W to PULSE and then back to OFF 19 After writing to the VG GO address the moni tor should show a large plus sign Failure of the horizontal or vertical circuits shows up as a single line drawn on the monitor f your monitor does not display a large plus sign contact Atari Field Service Tempest Troubleshooting Guide Figure 5 Analog Vector Generator Data Address Data Address 2000 40 200C 2001 80 200D 2002 00 200E 2003 70 200F 2004 00 2010 2005 1E 2011 2006 00 2012 2007 1E 2013 2008 00 2014 2009 60 2015 200A FF 2016 200B 03 2017 Data Address Data FF 2018 00 03 2019 40 00 201A 80 62 201B 00 40 201C 80 80 201D 1F 80 201E 00 00 201F 00 00 2020 FF 00 2021 40 01 2022 00 1F 2023 E0 4 Troubleshooting With Signature Analysis A Signature Analysis Set up Perform the CAT Box Preliminary set up Connect the three BNC to E Z clip cables sup plied wit
5. keyboard use AAAA to start Push DATA SET Key in data pattern on the key board use AA to start R W MODE STATIC Probe the IC pin with the data probe and check for the 1 or 0 LED as indicated in Fig ure 2 Repeat this step for each address and data line Repeat steps 6 11 using 5555 in step 8 and 55 in step 10 Figure 2 Address and Data Lines When writing Address and When writing AAAA pattern data lines 5555 pattern Logic State IC Pin Logic State 1 B3 1 0 0 B3 3 1 1 lt B32 0 0 AIB 3 1 1 A B 18 0 0 A B 16 1 1 AIB 14 0 0 A B 12 1 1 B C 3 0 0 B C 5 1 1 B C 7 0 0 B C 9 1 1 B C 18 0 0 B C 16 1 1 B C 14 0 0 B C 12 1 1 F2 9 0 0 F2 8 1 1 F2 7 0 0 F2 6 1 1 F2 5 0 0 F2 4 1 1 F2 3 0 0 F2 2 1 C KAM 1 Perform the CAT Box preliminary set up Tempest Troubleshooting Guide Set the CAT Box switches as follows Press TESTER RESET DBUS SOURCE ADDR BYTES 1024 R W MODE OFF R W WRITE Enter 0000_on the keypad Toggle R W MODE to PULSE and back to OFF R W READ i Toggle R W MODE to PULSE and back to OFF 7 amoa Ifthe CAT Box reads an address that doesn t com pare the COMPARE ERROR LED lights up the ADDRESS SIGNATURE display shows the failing address location and the ERROR DATA DISPLAY switch is enabled Using this switch determine if the error is in the high or low order RAM 4 Repeat the test with DBUS SOURCE set to ADDR 5 Repeat steps 2 4
6. logic probe touching the 5V test point on the Auxiliary PCB the ADDRESS SIGNATURE display should read 3957 This will verify that your test set up is correct If you don t get 3957 re check your set up NOTE Signatures are listed in the order that they 14 should be done As often as possible C Pin refers to a chip output As a general rule when a bad signature is discovered the IC listed in the C Pin column can be suspect ed as faulty Signatures Logic Probe Signature on IC Pin Should Be C1 11 92F3 C1 12 A856 C1 13 3050 C1 14 H8F9 D1 11 9569 D1 12 3U53 D1 13 9F47 D1 14 4FUF D Math Box Test 3 Procedure Plug SA Harness Assembly Test 3 connector on to Signature Analyzer connector J16 on the Aux iliary PCB Connect the CAT Box Start Stop and Clock E Z hooks to the SA Harness Assembly as shown in Figure 7 Don t remove the microprocessor 6502A from the main PCB Don t connect the 50 pin ribbon cable to the main PCB edge connector Don t connect W DOG DIS to ground Don t connect PWR ON RESET to ground Set the CAT Box switches as follows a START J b STOP L c CLOCK _ f d TESTER MODE SIG e Press TESTER RESET Enter the self test mode and advance the screen with the slam switch until the large blank rec tangle appears This procedure is described in Figure 6 Chapter 2 of the Tempest Operation Maintenance and Service Manual With the logi
7. 00 F515 CC34 A6AS3 0000 8A7H CU2P 1C6C 6U30 5AAH 03A7 9A08 2327 6PUP 9AFH 809A 9CPP 1105 F H2 8 78AA J2 33 8631 J2 16 1105 J2 8 7U19 E2 34 A1F7 E2 31 1781 E2 16 9AFH E5 11 C646 D4 8 0600 E4 11 CC34 F5 11 C835 D4 6 C4U4 F5 6 753F E4 8 CPU8 E5 8 45A1 B Math Box Test 2A Procedure Plug SA Harness Assembly Test 2 connector on to Signature Analyzer connector J16 on the Aux iliary PCB Connect the CAT Box Start Stop and Clock E Z hooks to the SA Harness Assembly as shown in Figure 7 Don t remove the microprocessor 6502A from the main PCB Don t connect the 50 pin ribbon cable to the main PCB edge connector Don t connect W DOG DIS to ground Don t connect PWR ON RESET to ground Set the CAT Box switches as follows a START J b STOP 7 c CLOCK L d TESTER MODE SIG e Press TESTER RESET Enter the self test mode and advance the screen with the slam switch until the large blank rec tangle appears This procedure is described in Figure 6 Chapter 2 of the Tempest Operation Maintenance and Service Manual With the logic probe touching the 5V test point on the Auxiliary PCB the ADDRESS SIGNATURE display should read 3957 This will verify that your test set up is correct If you don t get 3951 re check your set up NOTE Signatures are listed in the order that they should be done As often as possible C Pin refers to
8. 3 Clock Ae o2 Tempest Troubleshooting Guide 2 Signatures NOTE To obtain Signatures from IC J5 ground R W testpoint Logic Probe Signal Signature on IC Pin Name Should Be B3 7 10 F2A6 E3 2 I O F2A7 F3 8 El O F2A6 J5 9 VGRST 5969 J5 10 WDCLR OPC5 J5 11 VGGO 270P J5 12 BB 9CH2 B3 5 VMEM 12U3 B3 4 AA 4P0A J2 7 ROM8 56C3 J2 6 ROM 8019 J2 5 ROM6 5AH1 J2 4 ROM5 9HUC J2 9 ROM4 1920 J2 10 ROM3 C34C J2 11 ROM2 597C J2 12 ROM1 UA87 C1 7 ROMO 4154 C1 6 ROMX 960F 3 CAT Box Settings for Address Decoder Test Probe Trigger Testpoint Start pa A6 4 Stop a A6 4 Clock T 2 4 Signatures Verify CAT Box setting and connections as follows probe 5V 755U signature Logic Probe Signature on IC Pin Should Be B3 9 970C B3 10 868C B3 11 7FF8 B3 12 1817 Tempest Troubleshooting Guide D KOM and Data Lines NOTE When taking signatures on ROMs install a 270 pF capacitor between IC B3 Pin 2 and ground 1 CAT Box Settings for ROMX Test L C D1 for ROM part no 136002 101 113 or 133 Probe Trigger Testpoint Start TL ROMX Stop T ROMX Clock ga 2 2 Signatures Logic Probe Signal Signature on IC Pin Name Should Be D1 9 DBO 1F4H D1 10 DB1 4P55 D1 11 DB2 P2C5 D1 13 DB3 UH32 D1 14 DB4 4HFA D1 15 DB5 OP76 D1 16 DB6 86CP D1 17 DB7 P29C 3 CAT Box Settings for ROMO Test L C E1 for ROM part no 136002 102 or 114 1 C D1 for ROM part no 136002 133 Probe Trigger
9. A SOMNOMSONH NOTE For the encoder wheel repeat the above in structions keying in 60CO in step 6 and 60C8 in step 12 Turning the encoder wheel should cause the DATA DISPLAY to change To test player 2 inputs in cocktail games connect IC D6 1 to 5 G LED and Coin Counter Outputs Perform the CAT Box Preliminary set up DBUS SOURCE to DATA BYTES 1 R W WRITE R W MODE OFF Key in address from Figure 4 Press DATA SET Key in on or off data from Figure 4 R W MODE to STATIC and back to OFF Repeat steps 6 9 to turn off coin counter sole noids or to test another address SOSNMAARWNa If you write data that activates a solenoid deacti vate it by pressing the reset button on the game board or by writing off data If you leave a solenoid activated for more than about 10 seconds it will over heat and may have to be replaced Tempest Troubleshooting Guide Figure 4 LED and Coin Counter Addresses ADDRESS ON DATA OFF DATA OUTPUT NAME 4000 01 00 Right Coin Counter 4000 02 00 Center Coin Counter 4000 04 00 Left Coin Counter 60E0 FD FF 1 player start LED 60E0 FE FF 2 player start LED H Analog Vector Generator 1 Test Perform CAT Box preliminary set up DATA SOURCE DATA R W WRITE RW MODE OFF Key in address from Figure 5 or press AD DRESS INC Press DATA SET Key in data from Figure 5 Set R W MODE to PULSE and then to OFF Repeat steps 5 8 for each address in
10. TM 195 2nd printing TROUBLESHOOTING GUIDE Complete with Signatures and Memory Map Tempest Troubleshooting Guide Complete with Signatures and Memory Map Tempest Troubleshooting Guide Copyright 1981 by Atari Inc All rights reserved No part of this publication may be reproduced by any mechanical photo graphic or electronic process or in the form of a phonographic recording nor may it be stored in a retrieval system transmitted or otherwise copied for public or private use without permission from the publisher The Tempest game play all graphic designs this troubleshooting guide the technical manual its accompanying schematic diagrams and the moni tor manual are protected by the new Copyright Act of 1976 This Act provides for increased penalties for violating federal copyright laws Courts can impound infringing articles while legal action is pending If infringers are convicted courts can order destruction of the infringing arti cles In addition the Act provides for payment of statutory damages of up to 50 000 in certain cases Infringers may also have to pay costs and attor neys fees fines up to 25 000 and face an imprisonment of up to one year Atari will aggressively enforce its copyrights against any infringers We will use all legal means to immediately halt any manufacture distribution or operation of a copy of video games made by us Anyone who purchases such copies risks forfeit
11. Testpoint Start TIE ROMO Stop T ROMO Clock ge 2 4 Signatures Verify CAT Box settings and connections as follows probe 5V 7A70 signature Logic Probe Signal Signature on IC Pin Name Should Be E1 9 DBO 6481 E1 10 DB1 P6A9 E1 11 DB2 9552 E1 13 DB3 40F3 E1 14 DB4 37C2 E1 15 DB5 0A18 E1 16 DB6 A2C0 E1 17 DB7 9HC5 5 CAT Box Settings for ROM1 Test I C F1 for ROM part no 136002 103 115 or 134 Probe Trigger Testpoint Start E ROM1 Stop ROM1 Clock a o2 6 Signatures Verify CAT Box settings and connections as follows probe 5V 7A70 signature Logic Probe Signal Signature on IC Pin Name Should Be F1 9 DBO 3892 F1 10 DB1 01U5 F1 14 DB2 PH6P F1 13 DB3 UP9F F1 14 DB4 UP44 F1 15 DB5 CA33 F1 16 DB6 3U05 F1 17 DB7 8CP3 7 CAT Box Settings for ROM2 Test I C H1 for ROM part no 136002 104 or 116 1 C F1 for ROM part no 136002 134 Probe Trigger Testpoint Start ROM2 Stop if ROM2 Clock L p2 8 Signatures Verify CAT Box settings and connections as follows probe 5V 7A70 signature Logic Probe Signal Signature on IC Pin Name Should Be H1 9 DBO 7550 H1 10 DB1 A01F H1 11 DB2 A540 H1 13 DB3 5U60 H1 14 DB4 2068 H1 15 DB5 9767 H1 16 DB6 54CA H1 17 DB7 7F8F 9 CAT Box Settings for ROMS Test I C J1 for ROM part no 136002 105 117 or 135 Probe Trigger Testpoint Start TL ROM3 Stop ST ROM3 Clock L o2 10 Signatures Verify CAT Box settings and connections as follo
12. a chip output As a general rule when a bad signature is discovered the IC listed in the C Pin column can be suspect ed as faulty Tempest Troubleshooting Guide GND Signatures CLOCK Logic Probe Signature on IC Pin Should Be STARE A1 14 F722 STOP A1 13 C4P5 A A1 12 6UAC A1 11 3441 a A1 10 2P61 Ll A1 9 92F3 M A1 7 A856 A1 6 3050 A1 5 H8F9 A1 4 9569 A1 3 3U53 A1 2 9F47 A1 1 4FUF yr eno O O O M START V O STOP O NY O J O O SACLK 3 O sack 3 O SACLK 3 O SAEN 1 O SAEN 2 3 Figure 7 S A Harness Assembly 13 Tempest Troubleshooting Guide C Math Box Test 2B Procedure Plug SA Harness Assembly Test 2 connector on to Signature Analyzer connector J16 on the Aux iliary PCB Connect the CAT Box Start Stop and Clock E Z hooks to the SA Harness Assembly as shown in Figure 7 Don t remove the microprocessor 6502A from the main PCB Don t connect the 50 pin ribbon cable to the main PCB edge connector Don t connect W DOG DIS to ground Don t connect PWR ON RESET to ground Set the CAT Box switches as follows a START T b STOP LL c CLOCK _ d TESTER MODE SIG e Press TESTER RESET Enter the self test mode and advance the screen with the slam switch until the large blank rec tangle appears This procedure is described in Figure 6 Chapter 2 of the Tempest Operation Maintenance and Service Manual With the
13. c probe touching the 5V test point on the Auxiliary PCB the ADDRESS SIGNATURE display should read 3957 This will verify that your test set up is correct If you don t get 3957 re check your set up NOTE Signatures are listed in the order that they should be done As often as possible C Pin refers to a chip output As a general rule when a bad signature is discovered the IC listed in the C Pin column can be suspect ed as faulty Signatures Logic Probe Signature on IC Pin Should Be E2 22 1441 E2 23 2883 E2 24 5107 E2 25 A20P J2 22 441H J2 23 883A J2 24 1074 J2 25 20P9 ATARI INC 1265 BORREGAS AVENUE P O BOX 427 ATARI SUNNYVALE CALIFORNIA 94086 awarerc 408 745 2000 TELEX 35 7488 ee ee ee
14. dio I O Chip 60D1 AF Custom Audio O Chip 1 channel 1 produces 2 channel 1 produces pure tone pure tone 60C1 00 Custom Audio I O Chip 60D1 00 Custom Audio I O Chip 1 channel 1 off 2 channel 1 off 60C2 55 60D2 55 60C3 AF Custom Audio I O Chip 60D3 AF Custom Audio I O Chip 1 channel 2 produces 2 channel 2 produces pure tone pure tone 60C3 00 Custom Audio I O Chip 60D3 00 Custom Audio WO Chip 1 channel 2 off 2 channel 2 off 60C4 55 60D4 55 60C5 AF Custom Audio I O Chip 60D5 AF Custom Audio I O Chip 1 channel 3 produces 2 channel 3 produces pure tone pure tone 60C5 00 Custom Audio I O Chip 60D5 00 Custom Audio I O Chip 1 channel 3 off 2 channel 3 off 60C6 55 60D6 55 60C7 AF Custom Audio I O Chip 60D7 AF Custom Audio I O Chip 1 channel 4 produces 2 channel 4 produces pure tone pure tone 60C7 00 Custom Audio I O Chip 60D7 00 Custom Audio I O Chip 1 channel 4 off 2 channel 4 off F Player Input Switches and Encoder Wheel Perform the CAT Box Preliminary Set up DBUS SOURCE to DATA BYTES 256 R W WRITE R W MODE OFF Key in 60D0 Press DATA SET Key in 00_ Toggle R W MODE to PULSE and back to OFF BYTES 1 RW READ Key in 60D8 RW MODE STATIC Pushing the following player input switches should cause the DATA DISPLAY to change FIRE SUPERZAPPER 1 player start and 2 play er start Also Player 2 FIRE and Player 2 SUPER ZAPPER in cocktail games h h h h 2 BOR
15. gger IC Pin Testpoint Start L C1 Pin9 Stop T C1 Pind Clock L 2 20 Signatures Verify CAT Box settings and connections as follows probe 5V 7A70 signature 24 Signatures Logic Probe Signal Signature Logic Probe Signal Signature on IC Pin Name Should Be on IC Pin Name Should Be R1 9 DBO 9HFP R3 9 DBO 3FH3 R1 10 DB1 U7HH R3 10 DB1 0H59 R1 11 DB2 F32H R3 11 DB2 9H5H R1 13 DB3 F66U R3 13 DB3 98PF R1 14 DB4 U379 R3 14 DB4 PA27 R1 15 DB5 490P R3 15 DB5 5U3H R1 16 DB6 5P99 R3 16 DB6 97FC R1 17 DB7 CFA8 R3 17 DB7 583A 10 Tempest Troubleshooting Guide Don t connect the 50 pin ribbon cable to the main E Math Box PCB edge connector Don t connect W DOG DIS to ground 5 Set the CAT Box switches as follows The Math Box signature analysis procedure is a START _ somewhat different from other procedures so follow b STOP J these set up instructions for the three tests carefully c CLOCK _ d TESTER MODE SIG In addition to your CAT Box or signature analyzer e Press TESTER RESET you ll need an SA Harness Assembly Order Atari part number A036836 01 or see Figure 6 to make your own 6 With the logic probe touching the 5V test point on the Auxiliary PCB the ADDRESS SIGNATURE display should read CC34 This will verify that 2 test set up is correct If don t get CC34 A Math Box Test 1 Procedure shelve EAREN 1 Plug SA Harness Assembly Test 1 connector onto Signature Analyzer connector J16 on the Auxi
16. h the CAT Box to the SIGNATURE ANALYSIS CONTROL START STOP and CLOCK jacks on the CAT Box Attach the three black E Z clips to a ground loop on the Tempest game PCB Attach the CAT Box data probe to the DATA jack on the CAT Box The colored E Z clips on the cables will be moved about for each group of signatures to be taken Set the CAT Box switches as follows TESTER MODE SIG TESTER SELF TEST OFF PULSE MODE LATCHED START As indicated STOP As indicated CLOCK As indicated Power up the game board and the CAT Box B Address Lines 1 CAT Box Settings for Address Bus Test Probe Trigger IC Pin Test Pt Start Th A6 3 Stop mie A6 3 Clock nis C2 39 o2 Verify CAT Box settings and connections as follows e probe GND test point 0000 signature e probe 5V test point 0001 signature 2 Signatures Logic Probe Signal Signature on IC Pin Name Should Be BiC1 12 ABO UUUU B C 1 14 AB1 5555 B C1 16 AB2 CCCC B C1 18 AB3 7F7F B C1 9 AB4 5H21 B C1 7 AB5 OAFA B C1 5 AB6 UPFH B C1 3 AB7 52F8 A B1 12 AB8 HC89 A B1 14 AB9 2H70 A B1 16 AB10 HPPO A B1 18 AB11 1293 A B1 3 AB12 HAP7 B3 2 A13 3096 B3 3 A14 3827 B3 1 A15 755U A6 4 A15 755P C Address Decoder NOTE While testing decoders and ROMs it may be necessary to add 270 pF capacitors to ADDR 12 13 14 and 15 to eliminate unsta ble signatures 1 CAT Box Settings for Address Decoder Test Probe Trigger IC Pin Test Pt Start TL A6 3 Stop ls A6
17. ing such a game Published by ATARI INC 1265 Borregas Avenue P O Box 427 Sunnyvale California 94086 Reproduced in the U S A 10K Table Tempest Troubleshooting Guide of Contents 1 Memory Map o6ci en eae ls Be i 2 Watchdog aeaee eaer 3 Troubiosnectng Using the CAT Box onmopowp CAT Box Preliminary Set up 0 ccc eee eects Address and DataLineS 2 0 0 cece cee eens RAM i2teo8 wh te die faye bbw Rote N A aa 4 aes waa dade eae ae eee Option Switch Inputs 0 ee et eee eee nee Custom Audio I O Chips 0 ccc cee teen eee teens Player Input Switches and Encoder Wheel 0000 ee eae LED and Coin Counter OutputS 0 0 cece ee eee 4 Troubleshooting with Signature Analysis mopom Signature Analysis Set up 0 2 eee cc eee eee Address Linas sers sc okies Spee ON eS ee PINT A lees ees Address Decoder 00 cece eee eee eee eens ROM and Data Lines 0 ccc ec eee eee nnne Math BOX ror caves Slee 5 2 aig Sane ow Seca ee ae ayes Pal ead Sand 11 List of Illustrations Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Memmory Maps eens cece ss vopna ce eb pa eee eae ee Se aE aa Address and Data LineS ccc cece eee eee tees Custom Audio VO Chips 0 2 eee eee eee Led and Coin Counter Addresses 0 0 e cece eee eens Analog Vector Genera
18. liary PCB NOTE Signatures are listed in the order that they should be done As often as possible C Pin 2 Connect the CAT Box Start Stop and Clock E Z refers to a chip output As a general rule hooks to the SA Harness Assembly as shown in when a bad signature is discovered the iC Figure 7 listed in the C Pin column can be suspected 3 On the main PCB connect PWR ON RESET test as faulty point to ground and power up the game and the Those signatures marked with an asterisk CAT Box should be taken with a 1K resistor clipped 4 Don t remove the microprocessor 6502A from between the logic probe and the 5V test the main PCB point Figure 6 S A Harness Assembly S A Harness Assembly 12 CIRCUIT HOUSING MOLEX P N 09 50 7121 TERMINAL MOLEX P N 08 50 0106 QUANTITY 18 2 3951 3 3951 11 Tempest Troubleshooting Guide 12 Signatures Logic Probe on IC Pin C1 11 C1 12 C1 13 C1 14 D1 11 D1 12 D1 13 D1 14 F1 12 F1 11 F1 10 F1 9 H1 12 H1 11 H1 10 H1 9 J1 12 J1 11 J1 10 J1 9 K1 12 K1 11 K1 10 K1 9 L1 12 L1 11 L1 10 L1 9 E1 12 E1 11 E1 10 E1 9 F4 2 E4 6 A2 6 B1 2 B1 5 B1 6 B1 9 B1 12 B1 15 B1 16 B1 19 K L2 33 K L2 16 K L2 8 F H2 33 F H2 16 Signature Should Be H58A 77F7 85PA 7P25 5CPO P5PH 725C 96PF 4PPF OUFO 3CAP AGA3 26A6 91HA P9C1 2987 96U0 UC59 6989 3FU4 05A6 60H6 PPF6 34C2 58A1 1AA2 F74F 6CF6 F765 CPU8 00
19. tor Data 00 ccc cece eee eens S A Harness Assembly 0 00 e eee e eee eee tee eens 11 S A Harness Assembly 0 0 2 cee eee eee e eee 13 Tempest Troubleshooting Guide NOTE If reading through this manual does not lead to solving a certain main tenance problem call Tele Help at the Atari Customer Service office in your geographical area as shown below WEST and CENTRAL U S A Parts for all Atari customers in the U S A Game sales and service Atari Inc California Customer Service Office 1105 N Fair Oaks Avenue P O Box 427 Sunnyvale CA 94086 Telex 17 1103 Monday Friday 7 30 4 00 pm Pacific Time From California Alaska or Hawaii 408 745 2900 From anywhere else in this area _toll free 800 538 1611 EAST U S A Game sales and service only Atari Inc New Jersey Customer Service Office 12A World s Fair Drive Somerset NJ 08873 Telex 37 9347 Monday Friday 7 30 4 00 pm Eastern time em From New Jersey 201 469 5993 ez From anywhere else in this area toll free 800 526 3849 EUROPE Parts for all Atari customers in Western Europe Game sales and service Atari Ireland Limited European Customer Service Office TIPPERARY TOWN Tipperary Town Ireland IRELAND Telex 28165 Monday Friday 9 00 6 00 pm GMT lt E 0062 52155 Tempest Troubleshooting Guide 1 Memory Map MEMORY MAP HEXA DECIMAL DATA FUNCTION ADDRESS D7 D6 D5 D4 D3 D2 D1 DO
20. within its program Typical causes are Open or shorted address or data bus lines Bad microprocessor chip Bad bus buffers Bad ROM Bad RAM Any bad input or output that causes an address or data line to be held in a constant high or low state DORON o A pulsing RESET signal indicates a problem ex ists somewhere within the microprocessor circuitry rather than within either the Math Box or the Analog Vector Generator 3 Troubleshooting Using the CAT Box A CAT Box Prelim inary Set up 1 Remove The electrical power from the game The wiring harnesses from the game PCBs The main and auxiliary boards from the game cabinet The microprocessor chip C2 from the main PCB 2 Connect The harnesses from the game to the main and auxiliary boards Use extender cabies if available 60 and 2 test points together W DOG DIS test point to ground The CAT Box flex cable to the main PCB test edge connector 3 Power Up The game The CAT Box 4 Set CAT Box Switches TESTER SELF TEST OFF TESTER MODE R W Press TESTER RESET B Address and Data Lines NOTE This section assumes that IC F2 is a 74LS245 1 Perform the CAT Box preliminary set up 2 Connect the DATA PROBE to the CAT Box and the game ground test point 3 TESTER MODE R W ONOOL 11 12 13 BYTES 1 PULSE MODE UNLATCHED R W MODE OFF RW to WRITE Key in address pattern on the
21. ws probe 5V 7A70 signature Logic Probe Signal Signature on IC Pin Name Should Be J1 9 DBO 09A6 J1 10 DB1 6A12 J1 11 DB2 91CA J1 13 DB3 10HP J1 14 DB4 F53U J1 15 DB5 C67C J1 16 DBE 8272 J1 17 DB7 F651 11 CAT Box Settings for ROM4 Test L C K1 for ROM part no 136002 106 or 118 I C J1 for ROM part no 136002 135 Probe Trigger Testpoint Start ROM4 Stop a ROM4 Clock L 2 12 Signatures Verify CAT Box settings and connections as follows probe 5V 7A70 signature Logic Probe Signal Signature on IG Pin Name Should Be K1 9 DBO A8FU K1 10 DB1 U3U7 K1 11 DB2 C8CH K1 13 DB3 353F K1 14 DB4 93FU K1 15 DB5 UFH1 K1 16 DB6 A165 K1 17 DB7 5399 13 14 Tempest Troubleshooting Guide CAT Box Settings for ROM5 Test I C UM1 for ROM part no 136002 107 119 or 136 Probe Trigger Testpoint Start L ROM5 Stop Pe ha ROM5 Clock LL 62 Signatures Verify CAT Box settings and connections as follows probe 5V 7A70 signature 15 16 Logic Probe Signal Signature on IC Pin Name Should Be L M1 9 DBO 4876 L M1 10 DB1 5397 L M1 11 DB2 7396 L IM1 13 DB3 C9CH L M1 14 DB4 HF73 L M1 15 DB5 11U6 L M1 16 DB6 43C8 L M1 17 DB7 2P85 CAT Box Settings for ROM6 Test I C M N1 for ROM part no 136002 108 or 120 I C LIM1 for ROM part no 136002 136 Probe Trigger Testpoint Start L ROM6 Stop T ROM6 Clock os 62 Signatures Verify CAT Box settings and connections as follows probe 5V
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