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MAC 1200 ST
GE MAC 1200 ST Service Manual
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Revision D
MAC
1200 resting ECG anal
ysis system
1-7
2012250-095
The Basics:
Block Circuit Diagram
of Entire Instrument
Block Circuit Diagram of Entire Instrument
MAC 1200 (US), V
ersion
6.2
ECG
Input
RS232
Interface
Line
Power
Input
PCB Control SC_CI
Modem Supply
Boot Loader
Program
Memory
Configuration
Memory
Internal
RAM
ECG RAM
Buffered
RS232
Driver
Keypad
Interface
Display
Interface
Display
Supply
Motor
Control
Thermal
Pinhead
Control
Device
On/Off
Control
Logic Supply
+5 V +3.3 V
Analog
Supply
Printhead
Supply
Real T
ime
Clock
Buffered
Controller
Core
ECG
Acquisition
and
Conditioning
NC Battery
PCB NC
Battery
Charge
Switching
Power
Supply
+26.5 V
Line Power
Input with
Fuse
Printing Unit
Thermal Printh
ead
Motor
LCD Graphics Display
1/4 VGA Monochrome
Keypad
Pump Interface
(not in US
Device)
Option Pump
(Not in US Device)
Line Power
, NC Battery
16
18
Table of Contents
Default Chapter
5
Table of Contents
5
1 The Basics
11
About this Manual
13
Manual Purpose
13
Intended Audience
13
Definitions
13
Illustrations and Names
14
Revision History
14
Basic Information
15
Variants of the MAC 1200 Resting ECG Analysis System
16
Hardware Functional Blocks
16
Block Circuit Diagram of Entire Instrument
17
Mechanical Components
18
2 Functional Description
19
Basic Information
21
Switching Power Supply
22
PCB NC Battery Charge
23
Charging Circuit for the NC Battery
23
Battery-Dependent Device Behavior
24
PCB Control CS_CI
25
Generation of Internal Power Supplies
25
Switch On/Off Circuit
26
ECG Recording and Front-End Processing
27
Controller Core
28
Real Time Clock
29
Memory
30
LCD Graphics Display Interface
30
Modem Supply
35
Internal Interfaces
36
Mechanical Interfaces
36
Electronic Interfaces
36
Interfaces to Peripherals
41
Electronic Interfaces
42
Limitations
44
3 System Test Function
45
General Information
47
Test Start
48
Display Test
49
Contrast Control
49
Keyboard Test
50
Motor Test
51
Test Results
52
Self-Test
53
Error Codes
53
Recording Test
54
V24 Tests
55
Sending and Receiving (1)
55
Send Test String to Device (2)
55
Send and Receive with Device (3)
56
Time and Date
57
Electrode Test
58
Time Constant/Baseline Roll Filter
59
Setting the Device Model
60
Interpretation (International Device Models Only)
62
Pace Enhance
63
Serial Number
64
Ergometer / Treadmills (JAPAN Device Model Only)
65
ACI-TIPI (US Device Models Only)
66
Pharma
67
High Security
67
4 Repair Instructions
69
Safety Instructions
71
Replacing Components
72
Opening the Device
72
5 Troubleshooting
79
Basic Information
81
6 Adjustment Instructions
85
Basic Information
87
7 Service and Maintenance
89
Technical Inspections/Preventative Maintenance
91
Visual Check
92
Test Functions
92
Safety Analysis Tests
96
Maintenance, Cleaning, and Disinfection
99
8 Parts List
101
Introduction
103
Field Replaceable Units (Frus)
104
High Level Assemblies
104
9 Specifications
111
Basic Information
113
Recording
113
Printer Paper
113
Paper Transport
114
Membrane Keypad
114
Display
114
Indicators (Leds)
114
Automatic Functions
114
Detection of Pacer Pulses
115
Heart Rate Indication
115
Signal Inputs
115
Data Interface
116
Pin Assignment of Data Port
116
Remote Start (Hardware)
116
Signal Transmission
117
ECG Calibration
118
Automatic ECG Gain Adjustment
118
Baseline
118
Anti-Drift System (ADS) (Cubic Spline)
118
ECG Storage
118
Blocking
119
Electrode Monitoring
119
Text Input
119
Copy Function
119
Test
119
Power Supply
119
Mains Operation
120
Battery Operation
120
Operational Readiness
120
Operating Position
120
Environment
121
Recorder Dimensions
121
Weight
121
10 Drawings
123
Basic Information
124
High Level Assembly, PN 101 168 01
125
11 Drawings
125
High Level Assembly, PN 101 168 01
126
PCB Assembly Drawing, PN 2033914-027
127
Schematic, PN 2033914-033, Sheet 1
128
Schematic, PN 2033914-033, Sheet 2
129
Schematic, PN 2033914-033, Sheet 3
130
Schematic, PN 2033914-033, Sheet 4
131
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GE MAC 1200 ST Specifications
General
Brand
GE
Model
MAC 1200 ST
Category
Medical Equipment
Language
English
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