GE Marquette MAC 5000

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Revision B7-30

PCB Assemblies: SD801222-001A LED

MAC 5000 ECG analysis system

2000657-002

Main Page

Table of Contents5
Introduction11
Manual Information13
Revision History13
Manual Purpose13
Intended Audience13
Conventions14
Safety Information15
Definitions15
Messages15
Responsibility of the Manufacturer16
General16
Equipment Symbols17
Service Information18
Service Requirements18
Equipment Identification18
Equipment Overview19
General Description21
Front View21
Back View21
Internal View22
Preparation for Use23
Trolley Assembly23
Connector Identification24
Paper Installation25
Controls and Indicators26
Maintenance27
Introduction29
Recommended Maintenance29
Preventive Maintenance Inspection Report29
Required Tools and Supplies29
Inspection and Cleaning30
Visual Inspection30
Exterior Cleaning30
Interior Cleaning30
General30
Thermal Printhead31
Battery and Patient Cable Replacement32
Battery Replacement32
Patient Cable Replacement32
Disassembly Guidelines33
Preliminary Steps33
Power Supply33
Removal33
Reassembly34
Top Cover34
Removal34
Reassembly35
Display/Keyboard Assembly35
Removal35
Reassembly37
Main PCB37
Removal37
Printhead Replacement37
Diskette Drive Removal/Replacement38
Writer Roller/Carriage Assembly38
Removal38
Reassembly38
Domestic Electrical Safety Tests39
AC Line Voltage Test39
120 VAC, 50/60 Hz39
Leakage Tests40
Leakage Test Diagrams41
Test #141
Test #241
Test #342
Test #442
Ground Continuity43
Preventive Maintenance44
Troubleshooting45
Assembly Descriptions47
Introduction47
Assembly Block Diagram47
Input and Output Connectors48
A Pins (J1)48
COM1 (COM3/4) Pins (J3)48
COM2 Pins (J5)48
ANALOG Pins (J6)49
EXT. VID. Pins (J7)49
Internal Cabling50
CPU PCB Input/Output Signals52
Battery Pack/Monitor (J2)52
LCD Backlight (J4)52
Keyboard (J8)53
Lcd (J10)54
Power Supply/Motor (J11)55
Thermal Printer (J12)56
Floppy Disk Drive (J13)57
Acquisition Module (J14)57
General Fault Isolation58
Visual Inspection58
Power-Up Self-Test58
Power-Up Flow Chart59
Poor Quality Ecgs59
Diagnostic Tests60
Introduction60
Loading the System Diagnostics60
System Diagnostics Main Menu61
Display Tests61
Pixel Verification Test61
Grey Scale Test Patterns61
Anti-Aliasing Test Pattern62
Speaker Test62
Keyboard Test62
Writer Tests63
C-Scan Test 263
C-Scan Test 363
25 MM/S Test Pattern I63
Roller Test64
Test Pattern II64
Test Pattern II Continuous64
Continuously Run out Paper64
Battery Tests64
Battery Status64
Battery Discharge Test65
Battery Charge Test65
Print Discharge Test Results Print Charge Test Results65
Communication Tests65
COM Port Loopback Test65
Modem Test66
Acq. Module Tests66
Analog I/O Tests66
Analog Output Test66
Analog Input Test66
Dcout Loopback Test66
Floppy Drive Tests66
CPU Theory of Operation67
General Description69
Block Diagram70
Theory of Operation72
Clocks72
Cpu72
Fpga72
Bootstrap Instruction Unpacker73
EDO DRAM Controller73
Xbus Controller73
LCD Controller VLB Bus Cycle Interface73
Video Waveform Scrolling74
Interrupt Controller75
System Interrupt Generator75
Acquisition Module Interface75
Thermal Printhead Interface76
Serial EEPROM Interface76
Bbus Interface76
Uarts77
PWM Analog Outputs77
Beep Generator77
Dram78
Smartmedia Card78
Serial EEPROM78
VGA LCD/CRT Interface78
Acquisition Module Transceiver/Power Switch78
Thermal Printhead Power/Pixel Test Logic78
Superio Peripheral Controller79
Floppy Drive Support79
Four RS-232 Serial Ports (One Dual Mode RS-232/Irda)79
Clock/Calendar79
External PS-2 Keyboard Port79
General Purpose Parallel I/O Lines79
The Four Stooges79
Startup Self Identification80
Bbus80
Curly80
Shemp80
Larry81
Moe81
Moe84
Untested "Nominal" Operating Time Specs85
Parts Lists and Drawings87
Ordering Parts89
Introduction89
Field Replaceable Units90
MAC 5000Rev B Generic Assembly91
Generic Assembly91
Power Supply Assembly102
Power Supply Assembly104
Display Assembly106
Trolley110
PCB Assemblies113
801212-003A115
CPU PCB Assembly115
Sd801212-003A Cpu122
Battery Transition PCB138
SD801220-001A Battery Transition139
801222-001A140
Led Pcb140
Sd801222-001A Led141
Motor Protect PCB143
Motor Protect144

GE Marquette MAC 5000 - Page 142

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