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58

SECTION NINE: SCHEMATICS AND SILKSCREENS

Schematic Diagrams, Assembly and Drawings

Schematics:

1.  CPU, Blitter, ROM, clk
2.  RS232, Parallel, MIDI, PSG
3.  DMA, FDD, clk
4.  MCU, SHIFTER, Video
5.  Stereo Sound, Joy, Paddle
6.  RAM
7.  PSU
8.  Test Fixture

Drawings:

1.     Assembly Main
2.     Assembly PCB
3.     Keyboard (front side)
4.     Keyboard (back side)
5.     Keyboard Schematic
6.     Keyboard Assembly
7.     PCB Soldering Side
8.     PCB Components Side  without BLiTTER
9.     PCB Components Side  with BLiTTER
10.  ATARI STE Test Fixture to Computer connection

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Содержание 1040STE

Страница 1: ......

Страница 2: ...II Atari STe 520 1040 Computer Field Service Manual Part Number C302481 001 Rev A August 1991...

Страница 3: ...2 Input Output Subsystems 11 2 13 System Startup 21 2 14 System Errors 22 SECTION THREE TESTING 24 3 1 Overview 24 3 2 Test Configuration 25 3 3 Troubleshooting a Dead Unit 25 3 4 Diagnostic Cartridge...

Страница 4: ...IDI Problems 46 5 5 RS232 Problems 46 5 6 Printer Port Problems 46 5 7 Hard Disk Port Problems 46 5 8 DMA Sound 46 SECTION SIX DIAGNOSTIC FLOWCHARTS 47 6 1 Replacement Procedures 47 6 2 Handling of In...

Страница 5: ...aler parts lists are available No license is given for any use by the possession of these documents and may not be reproduced in any form without the written approval of Atari Corporation Atari the At...

Страница 6: ...h a modulator for TV output The 520STE and 1040STE both have the power supply integrated into the case 1 1 MAIN COMPONENTS 524K RAM 1048K for the 1040STE Main Board with modulator except French Perite...

Страница 7: ...ft Side Panel The right side panel has a slot for the floppy disk drive Figure 1 4 STE Right Side Panel The STE back panel contains left to right the modem RS232 connector printer connector hard disk...

Страница 8: ...Typical in system Demand Typical current 1 75A at 5V 86 mA at 12V Max current 2 2A at 5V 90 mA at 12 during disk access 1 4 NEGATIVE SUPPLIES The STE motherboard contains two small switching voltage r...

Страница 9: ...ubsystems 2 1 MAIN SYSTEM MC68000 running at 8 MHz 256 kbyte ROM 512 1024 kbyte RAM Direct Memory Access Support System Timing and Bus Control Interrupt Control 2 2 AUDIO VIDEO SUBSYSTEM The STE has b...

Страница 10: ...16 MHz clock and outputs 8 MHz 4 MHz and 500 kHz clocks VIDEO TIMING Blank DE Display Enable Vsync and Hsync are used to generate signals for the video display There is a Read Write register in GSTMC...

Страница 11: ...sses for video sound and DMA on the multiplexed address bus These addresses never appear on the system address bus CHIP SELECTS Decodes addresses for RAM and ROM and asserts output signals to enable t...

Страница 12: ...8 MULTI FUNCTION PERlPHERAL CONTROL 2 8 1 Interrupt Control The 68901 MFP can generate up to 16 interrupts 8 internally and 8 from external sources Each interrupt can be masked off or disabled by pro...

Страница 13: ...tput the red green and blue levels specified by the palette Note that there are four outputs for each color Each output is either on or off Thus the number of possible output levels is 2 to the 4th po...

Страница 14: ...Video Shifter CMPCS color map select is active only when changing the color attributes in the color palettes 2 9 5 Sound Synthesizer The YM2149 Programmable Sound Generator PSG produced music synthes...

Страница 15: ...to a National LMX 1992 Volume Tone Controller Finally the output is available at an RCA style output jack on the back of the computer This can be fed into an amplifier and then to speakers headphones...

Страница 16: ...13 Ground Figure 2 1 Monitor Ports 2 12 INPUT OUTPUT SUBSYSTEMS 2 12 1 Musical Instrument Communication The Musical Instrument Digital Interface MIDI allows the integration of the STE with music synth...

Страница 17: ...k data in response to external events and time of day year month day hour minute second in response to requests by the CPU Communication is controlled on the main board by a 6850 device and on the key...

Страница 18: ...DC 8 Ground 9 Not Connected Figure 2 3 Mouse Joystick Ports 2 12 4 Parallel lnterface The parallel port is primarily intended as a Centronics type printer interface but can also be used as a general p...

Страница 19: ...Asynchronous ReceiverlTransmitter which handles data transmission and reception The 2 4576 MHz clock to the MFP is divided by the timer D pin 16 output of the MFP to provide the basic clock for recei...

Страница 20: ...e externally buffered or inverted See Block Diagram Floppy Disk 1 Read Data 2 Side 0 Select 3 Logic Ground 4 Index Pulse 5 Drive 0 Select 6 Drive 1 Select 7 Logic Ground 8 Motor On 9 Direction In 10 S...

Страница 21: ...Data 1 3 Data 2 4 Data 3 5 Data 4 6 Data 5 7 Data 6 8 Data 7 9 Chip Select 10 Interrupt Request 11 Ground 12 Reset 13 Ground 14 Acknowledge 15 Ground 16 A1 17 Ground 18 Read Write 19 Data Request Fig...

Страница 22: ...Not Connected 9 Ground 10 Fire 1 11 Up 1 12 Down 1 13 Left 1 14 Right 1 15 Paddle 0X Controller B 1 Up 2 2 Down 2 3 Left 2 4 Right 2 5 Paddle 1X 6 Fire 2 7 5 VDC 8 Not Connected 9 Ground 10 Fire 3 11...

Страница 23: ...18 Figure 2 8 STE Functional Block Diagram...

Страница 24: ...19 Figure 2 9 STE DMA Block Diagram...

Страница 25: ...with joysticks paddles and light gun pen 2 12 8 1 JOYSTICKS Four new joystick ports are added These ports are controlled directly by the CPU The current state may be sampled at any time by reading the...

Страница 26: ...ect results in 640 x 200 mode this number needs to be shifted left one bit and in 640 x 400 modes this number needs to be shifted left two bits 2 13 SYSTEM STARTUP After a RESET power up or reset butt...

Страница 27: ...a on an odd address 4 ILLEGAL INSTRUCTION Processor fetched an instruction from ROM or RAM which was not a legal instruction 5 ZERO DIVIDE Processor was asked to perform a division by zero 6 CHK INSTR...

Страница 28: ...23...

Страница 29: ...will be an important consideration due to the low cost of the STE computer line little time can be justified in troubleshooting down to the component level when it may be cheaper to replace the funct...

Страница 30: ...he forward left corner of the computer to verify the unit is powered and making sure the monitor is working 1 Connect a terminal to the RS232 port of the unit under test U U T you can use an STE runni...

Страница 31: ...fter instead of MONO If the Video Shifter is outputting a signal but the picture is unreadable there is probably a problem with the screen RAM The cartridge should be used to diagnose this problem wit...

Страница 32: ...ync in the required time period T2 Horizontal Sync GSTMCU is not generating horizontal sync in the required time period T3 Display Enable GSTMCU is not generating DE output or the MFP is not generatin...

Страница 33: ...decreases it Pressing or the Help key brings up a brief synopsis of the cartridge functions After a test or series of tests completes the passlfail status and error report if any will be displayed Pre...

Страница 34: ...d green blue and white color bands are shown Each band consists of 16 levels of intensity All 16 color palettes are represented each palette is a vertical strip across the screen strips should not be...

Страница 35: ...l interrupts occur locate the source the inputs at pins 22 29 should all be high If no external to the MFP source for the interrupts is found replace the MFP Note If the keyboard is not connected the...

Страница 36: ...the self test the keyboard sent an error status Replace the keyboard 3 11 MIDI TESTS M This test sends data out the MIDI port data loops back through the cable and reads from the input and verifies t...

Страница 37: ...P failure S4 Input Data Overrun A byte was received before the CPU read the previous byte MFP failure S5 No IRQ CPU did not detect an interrupt by the MFP MFP or GSTMCU failure S6 Transmit Error MFP t...

Страница 38: ...ounters are tested The video display test redirects display memory throughout RAM and verifies that the correct addresses are generated Odd patterns may flash on screen as this test is run There are t...

Страница 39: ...each disk installed formats writes and reads tracks 0 1 and 79 of side 0 If double sided formats and writes track 79 of side 1 and verifies that side 0 was not overwritten If no disks are installed c...

Страница 40: ...n 20 should go low when drive A is selected and pin 19 should go low when drive B is selected If not replace the PSG F1 Error of previous version that has been deleted Error message now says Error Wri...

Страница 41: ...o the joystick ports The keyboard reads the joystick data in response to commands from the CPU The cables connecting the joystick ports to the test fixture must not be reversed or the printer and joys...

Страница 42: ...ure The hexadecimal data following corresponds to the bits read from latches U510 and 0512 where a 1 indicates an error For example 0002 indicates an error at J500 pin 3 J6 Aux Fire Sutton Fire button...

Страница 43: ...followed by the data written to the disk and the data read from the disk The error is the condition this test was meant to detect The circuitry involves the custom LSI chips GSTMCU Memory Controller a...

Страница 44: ...not provide interrupt vector E8 Internal Exception generated by 68000 E9 Bad Instruction Fetch EA Address Error Tried to read an instruction from an odd address or read or write word or long word at a...

Страница 45: ...ntroller port J6 Auxiliary fire button game controller port J7 Paddle game controller port J8 Light gun game controller port 3 21 7 RS232 S0 Data not received S1 Data received is nat what was sent S2...

Страница 46: ...or by staying on the data bus too long T6 1772 Bus test 1772 chip is causing a bus error by staying on the data bus too long 3 21 10 Floppy Disk Drive F0 Drive offline Not responding to restore seek t...

Страница 47: ...e RAM internal RAM in BLiT chip G2 Endmask G3 Operation G4 Halftone Op G5 Skew G6 Reverse Bit G7 Force Extra Source Read G8 Smudge G9 X Count GA Y Count GB Time out GC Address Count BUS ERROR during B...

Страница 48: ...emoval The power supply may be left in place and the upper shield removed in one piece for troubleshooting as follows 1 Remove one screw on the right side of the power supply shield Remove three screw...

Страница 49: ...upply to the bottom case at both front corners with two screws This can be done with the power supply shield in place using a magnetized screwdriver to hold the screw or by by removing the shield 7 If...

Страница 50: ...Verify that the monochrome monitor detect bit is being Fails to Synch but grounded when monochrome monitor is plugged in Color Monitor Okay Check MFP GPIP bit 7 replace MFP Scrambled Screen GSTMCU Mem...

Страница 51: ...ips Codes S0 through SB 12 VDC DC inverting power supply See section 3 12 1 5 6 PRINTER PORT PROBLEMS Symptom Probable Cause Red Screen Error Bad PSG MFP chips See section 3 17 1 Codes P0 P1 Shadow Pr...

Страница 52: ...documentation on the diagnostic cartridge where necessary and swapping out the indicated component s will result in repair of the problem 6 1 REPLACEMENT PROCEDURES Where replacement is indicated rep...

Страница 53: ...48 Figure 6 1 STE Diagnostic Flow Chart...

Страница 54: ...49 Figure 6 2 STE Diagnostic Flow Chart...

Страница 55: ...50 Figure 6 3 STE Diagnostic Flow Chart...

Страница 56: ...51 Figure 6 4 STE Diagnostic Flow Chart...

Страница 57: ...SY PSU 110V STE USA CAN 1 CA070057 005 ASSY K B CAN ST 1 C 103704 001 FDD 1 MB 3 5 SONY WILED 1 ASSY NO SE400340 111 PART NUMBER DESCRIPTION LOCATION QUANTITY CA400329 101 ASSY PCB SUB STE NTSC WIMOD...

Страница 58: ...TR 84P NATIONAL U401 0398055 001 IC LF347 14P U504 507 0398056 001 IC MF4 100 8P U505 506 0398057 001 IC DAC0802 16P U502 503 0398058 001 IC LMC 1992 28P U508 0398061 001 IC 68000 PLCC 68P U100 007073...

Страница 59: ...3 31 1N914 DIODE 1N914 SIGNAL ALT SILICON 0060629 RES JMPR 0 R405 451 459 0101004 1002 RES MF AX 10K 1 1 4W R501 504 505 506 510 515 0101004 1003 RES MF AX 100K 1 1 4W R545 546 C 101004 1801 RES MF AX...

Страница 60: ...V 20 AX C528 531 534 538 0014181 05 CAP CER 22uF 50V 20 80 AX C633 636 0014181 07 CAP CER 47uF 25V 80 20 AX C411 00770149 008 CAP CER 100pF 50V 5 SL AX C222 225 0070290 001 CAP CER 150pF 50V 10 AX C20...

Страница 61: ...as doing before the exception occurred Exceptions can be caused by interrupts instructions or error conditions See also System Errors or a 68000 reference for more detail GSTMCU Atari proprietary chip...

Страница 62: ...rate color on the T V Without this circuit colors on the T V become unstable flickering or shifting about on the screen PSG Programmable Sound Generator also YM2149 Yamaha version of General Instrumen...

Страница 63: ...FDD clk 4 MCU SHIFTER Video 5 Stereo Sound Joy Paddle 6 RAM 7 PSU 8 Test Fixture Drawings 1 Assembly Main 2 Assembly PCB 3 Keyboard front side 4 Keyboard back side 5 Keyboard Schematic 6 Keyboard Ass...

Страница 64: ...VCC VPP NC P100 4k7X8 1 2 3 4 5 6 7 8 9 R127 430 R119 2k2 C125 8 2pF R107 1k R121 100k U100 MC68000 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 53 54 55 14 52 16 17 56 57 15 5 4 3 2 1...

Страница 65: ...8 D202 1N914 C227 u1 J203 DB25F 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 U203 MC68901 9 11 36 37 38 39 40 41 42 43 44 22 23 24 25 26 27 28 29 8 13 14 15 16 47 45 17 18 35 10 2...

Страница 66: ...CLK Q Q PRE CLR R310 47 L304 R318 U302 74LS245 2 3 4 5 6 7 8 9 19 1 18 17 16 15 14 13 12 11 A0 A1 A2 A3 A4 A5 A6 A7 G DIR B0 B1 B2 B3 B4 B5 B6 B7 R301 1k R303 1k L306 U305B 7406 3 4 U307 74LS244 2 4...

Страница 67: ...4 2 4 5 6 7 8 9 12 13 15 17 19 20 21 22 43 44 45 46 48 49 50 51 52 53 58 59 60 83 68 69 70 71 75 77 78 79 80 63 64 65 66 88 90 91 92 94 95 126 129 130 131 132 134 136 138 10 25 40 55 74 118 103 133 98...

Страница 68: ...7C LF347 10 9 8 4 11 C515 10nF U507A LF347 3 2 1 4 11 R508 8k2 C533 10nF R546 100k R543 10 L510 L506 FB R521 1M L518 P501 4k7X8 1 2 3 4 5 6 7 8 9 U503 DAC0802 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 C5...

Страница 69: ...02 SIMM 1MB 2 15 14 12 11 8 7 5 4 3 6 10 9 13 16 20 23 25 27 18 17 21 1 30 22 CAS A7 A6 A5 A4 A3 A2 A1 A0 DQ0 DQ1 DQ2 GND DQ3 DQ4 DQ5 DQ6 DQ7 RAS A9 A8 WE VCC VCC GND E4 U600 SIMM 1MB 2 15 14 12 11 8...

Страница 70: ...INLET 1 2 3 D101 RB155 C205 1000uF R201 2k7 PC101 1 6 2 5 Q101 2SC2979 R103 100k D202 C110 22nF R109 75 R113 10 R101 10 D103 R106 3R3 C204 1000uF L202 IC201 HA17431P R107 2k C102 2200pF C103 2200pF R1...

Страница 71: ...DB25M 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 R15 U9C 74LS04 5 6 U11 74LS191 3 2 6 7 13 12 15 1 10 9 14 11 5 4 Q0 Q1 Q2 Q3 RCLKO TC P0 P1 P2 P3 CLKIN PL U D CE Y1 4MHz U16 74...

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Страница 81: ...ATARI STE TEST FIXTURE TO COMPUTER CONNECTION...

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