SECTION 2 SYSTEM TESTING AND TROUBLESHOOTING 2-1. DIAGNOSTIC TEST ROUTINE. The diagnostic routine should be performed before disassembly of the Master Component. Perform the diagnostic test routine as described below: a. Test Procedure. Upon insertion of the MTE-201 Test Cartridge and depressing the reset button on the Master Component (M/C), the unit will proceed through a series of checks on the CPU (UI) and areas accessible by it. This automatic test sequence takes approximately 10 seconds to complete. (1) At the completion of the above test sequence, the Hand Controller test display will appear as shown in Figure 2-1. (a.) Press each key on the Hand Controllers, one at a time and verify that each corresponding test image turns from yellow to white when the appropriate key is depressed. NOTE: The right Hand Controller will affect the left test image and vice versa. (b.) Press the top side buttons on the Hand Controllers one at a time. Make sure that the pair of Fs change from yellow to white. (c.) Press each lower side button on the Hand Controllers one at a time and see that the letters L and R change from yellow to white. (d.) Depress the directional disc on each Hand Controller and a white arrow will appear in the black circle. As the directional disc is rotated, the arrow will rotate. Check to see that the arrow points in 16 different directions. (e.) Check the row of colored boxes for similarity as listed in Figure 2-1. If any of the operations do not occur as described it indicates either a defective Hand Controller or Sound IC (U6). Next, depress the digit keys 1 and 9 simultaneously on either Hand Controller and the test sequence will proceed to the sound checks. [Illustration of the Hand Controller Test Pattern Screen. Below is the caption "Figure 2-1 Hand Controller Test Pattern." To the right is a legend: "COLOR CODE: 1. Black 2. Blue 3. Red 4. Tan 5. Dark Green 6. Light Green 7. Yellow 8. White 9. Gray 10. Orange 11. Brown 12. Magenta 13. Light Blue 14. Yellow/Green 15. Purple"] (2) Verify that the following sequence of sounds is heard: (a.) A high note stepping down through five octaves (repeated three times). (b.) Random noise (hissing) starting at a high volume and diminishing until silenced. (c.) A single tone, starting at a high volume and diminishing slowly. (d.) Two gunshots, one at a normal volume, the second at half volume. If all of these sounds are heard as described, depress the CLEAR key on either Hand Controller. In the event any part of the test has failed, depress the ENTER key. (NOTE: The test sequence cannot be advanced while sounds are being generated.) (3) The next segment of the test presents a series of patterns, ending with the pattern illustrated in Figure 2-2. Check colors in the test pattern against Figure 2-2 for similarity and definition. If test pattern accuracy is satisfactory, press the CLEAR key. If it is unsatisfactory, press the ENTER key. [Illustration of the Sound Test Pattern Screen. Below is the caption "Figure 2-2." To the right is the color code legend.] (4) The next portion of the test sequence is a pattern of colored blocks with the two larger blocks alternating with the words MODE TWO on a red background, as illustrated in Figure 2-3. Check colors in test pattern against Figure 2-3 for similarity and definition. If test pattern accuracy is satisfactory, press the CLEAR key. If it is unsatisfactory, press the ENTER key. [Illustration of the Colored Blocks Test Pattern Screen. Below is the caption "Figure 2-3." To the right is the color code legend.] (5) The last pattern of the test alternates between the letters F/B and VIS. Press the CLEAR key for a satisfactory indication. Press the ENTER key for an unsatisfactory condition. If no failure has been detected, the title page for Baseball will appear; this indicates the M/C has passed all the automatic and operator tests. [Illustration of the Failure Screen. Below is the caption "Figure 2-4."] In the event a failure has been detected, instead of the title page being displayed, a display as shown in Figure 2-4 will appear. Depending on the failure code detected, the suspect IC will flash in Red and Blue indicating the most likely defective IC. The next test is an actual game check to confirm the functional operation of the M/C. When the title page for Baseball is displayed, follow the instructions provided with the MTE-201 Test Cartridge to play ½ an inning of Baseball. Upon successful operation of the baseball game, the test routine for the Master Component is complete. The reason the Baseball game is utilized is because the Baseball makes full use of the digital/memory facilities of the M/C. MTE-201 FAILURE CODES AND CAUSES FAILURE | DESIGNATED | | OTHER POSSIBLE CODE | IC | DESCRIPTION | IC FAILURES ________|____________|_________________________________________|_______________ | | | A | U5 (GROM) | Check SUM Graphics ROM | U2, U4, U9 B | U9 (SROM) | Check SUM System ROM | U1 C | U3 (PROM) | Check SUM PROGRAM ROM | U1 D | U4 (STIC) | Memory test of STIC | U2, U5 E | U8 (LGRAM) | Memory test of Lower Graphics RAM | U4, U5, U2 F | U7 (UGRAM) | Memory test of Upper Graphics RAM | U4, U2, U5 G | U2 (SRAM) | Memory test of SYSTEM RAM | U4, U5, U1 H | U12 (SPAD) | Memory test of SCRATCHPAD RAM | U9, U1, U3 J | U6 (PSG) | Memory test of Sound IC | U9, U1, U3 K | U4 (STIC) | Interaction test of STIC IC | N | U4 (STIC) | "Solid Test" verifies that all 64 | | | points on all 8 moving objects react to | | | interaction | U2 O | U4 (STIC) | Verifies that all 4 quadrants of the | | | colored squared mode register | | | interactions in all colors, but clear. | U1 P | U4 (STIC) | Verifies that the top left and bottom | | | right corner of the screen register | | | proper interaction at all offest | | | positions. | Q | U4 (STIC) | Uses interactions to verify that X zoom | | | functions. | R | U4 (STIC) | Uses interactions to verify that Y zoom | | | functions. | S | U4 (STIC) | Uses interactions to verify that Y | | | mirror functions. | T | U4 (STIC) | Uses interactions to verify that X | | | mirror functions. | U | U4 (STIC) | Uses interactions to verify that | | | full/half height objects functions. | V | U4 (STIC) | Uses interactions to verify that 8/16 | | | line objections functions | U2 *W | U4 (STIC) | Color priority test | *X | U6 (PSG) | Manual fail of audible test | *Y | U4 (STIC) | Manual fail of visibility of | | | foreground/background priority | *Z | U4 (STIC) | Manual fail of mode one/mode two visual | *Pass or failure is determined by operator/technician performing test. NOTE: IF MULTIPLE FAILURE OCCURS, SEE THE RECOMMENDED SUBSTITUTION SEQUENCE FOR LOCATING THE DEFECTIVE ICs (Pg. 2-9) When the Hand Controller test is displayed, instead of depressing keys 1 and 9 simultaneously to continue the test sequence, you may access the following programs: INDIVIDUAL TESTS: Depress keys 1 and 7 simultaneously and an individual test menu is displayed. The left Hand Controller is then used to enter the selection number to determine the test to perform. Depress the CLEAR key to remove erroneous selection number entry. Depress the ENTER key after the input of the selection number, to perform the entry selected. The tests are as follows: Selection Test Performed No. 0. Return to Hand Controller test display. 1. STIC Automatic Tests -- Perform the tests on the STIC which do not require operator intervention. These tests are those of which valid responses from the STIC itself can be detected by the CPU. 2. Memory test of the System RAM. 3. Memory test of the Sound IC (PSG). 4. Check SUM test SYSTEM ROM (SROM). 5. Check SUM test PROGRAM ROM (PROM). 6. Check SUM of GRAPHICS ROM. 7. Memory test of the LOWER GRAPHICS RAM. 8. Memory test of the UPPER GRAPHICS RAM. 9. Memory test of the SCRATCHPAD PAM (SPAD). 10. Audible test of Sound IC (PSG). 11. Visual verification test. Upon successful completion of some of the individual tests selected, a small Blue symbol will appear at the bottom of the display. If a failure is detected a failure code will be displayed on the screen. To exit the program, select 0, which will return the operator to the normal test routine. TEST CARTRIDGE CHECK: Depress keys 2 and 8 simultaneously and a checksum for the MTE-201 test cartridge will be displayed. The display should look like this: "CART CHECKSUM LO = " "00002371677" "CART CHECKSUM HI = " "00003372642" If any other numbers appear or the numbers differ, it indicates failure in the test cartridge and another cartridge should be utilized. 2-2. CUSTOMER'S GAME CARTRIDGE TEST. Test the customer's Game Cartridge as follows: a. Verify that Master Component is connected to television set as outlined in the operating instructions (Page 01-1). b. Set the Antenna Switch Box to GAME. Insert customer's Game Cartridge in Master Component and depress the reset switch. Check for mistake in lettering on title picture, jumbled playfield or unwanted characters. c. If problems occur, remove customer's Game Cartridge and check Master Component with a known-good Game Cartridge. d. With the known-good Game Cartridge inserted, if problems are not observed, then the customer's Game Cartridge is defective. If problems are still observed, troubleshoot the Master Component. SUBSTITUTION SEQUENCE OF PLUG-IN ICs ON PCB-LOGIC Symbol No. Manufacturer's Type No. Function Part No. 1. U2 RA-3-9600 SYSTEM RAM (0098-0530) 2. U4 AY-3-8900-1 STIC (0098-0640) 3. U1 CP-1610 CPU (0098-0520) 4. U9 RO-3-9502-011 PROGRAM ROM (0098-0670) 5. U3 RO-3-9504-021 PROGRAM ROM (0098-0620) 6. U5 RO-3-9503-003 GRAPHICS ROM (0098-0570) 7. U6 AY-3-8914 SOUND (PSG) (0098-0660) 8. U10 AY-3-8915 COLOR (0098-0680) * Always use a known-good IC. * Always follow proper procedures and precautions for handling MOS devices. * Be sure of correct IC orientation and pin insertion. * Change only one IC at a time and leave in the known-good IC until the faulty IC is found.