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QT-750
Quantum QT-750 Service Manual
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Chapter 4 Serv
ice Instru
ctions
Models QT
-7
40 & QT-
750 - Service Manual
47
1
NOTE: Model QT-750 Foot
Pedal is shown below; Model
QT-740 Foot Pedal has only
one switch
.
Figure 22.
Replaceable Parts
Location Dia
gram
2
5
4
Figur
e 23.
R
eplaceab
le Part
s Locatio
n Diag
ram
52
54
Table of Contents
default chapter
5
Table of Contents
5
Chapter 1 Specifications
9
Physical Specifications
9
Tabletop Specifications
9
Image Receptor Specifications
9
System Specifications
9
Electrical Specifications
10
System Options
10
System Operating Environment
10
Non-Operating Environment
10
Chapter 2 Assembly & Installation
15
Overview
15
Unpacking
15
Positioning the Table Base
15
Electrical Connections
16
Power Input Connections (Permanent Wiring Configuration)
16
Bucky Power Input Connections
16
PBL Interlock Cable Connections
16
Alignment Procedures
18
Image Receptor/Collimator X-Ray Alignment
18
Tabletop Assembly/Installation
20
Operational Checks and Adjustments
23
Checking Table Float-Top Operation
23
Checking Up/Down Operation (Model Qt-750 Only)
23
Pedal Disable Switch Operational Check
24
Checking the Obstruction Sensors (Elevating Table Only)
25
Positive Beam Limitation (Pbl) Collimators
25
Model Qt-750 Covers Installation/Adjustment Procedure
26
Chapter 3 Theory of Operation
31
Overview
31
Model Qt-740 Table
31
Power Distribution
31
Float Control
31
Foot Pedal Disable Circuit
32
Receptor Cabinet Lock
32
Model Qt-750 Table
32
Power Distribution
32
Voltage Regulation
32
Float Control
36
Foot Pedal Disable Switch
36
Positive Beam Limitation
36
Receptor Cabinet Lock
37
Emergency Stop Switch
37
Chapter 4 Service Instructions
41
Overview
41
Service Maintenance
42
Visual Inspection
42
Functional Check for Model QT-750 Elevating Tables
42
Lubrication
44
Removal/Replacement Procedures
44
Replacing the Drive Belt (Model QT-750 Tables Only)
44
Replacing the Sync Belt (Model QT-750 Tables Only)
45
Replacing the DC Motor (Model QT-750 Tables Only)
48
Replacing the DC Motor Driver Board A2 (Model QT-750 Tables Only)
48
Receptor Cabinet Removal/Replacement
50
Cassette Tray Removal Procedure
51
Replacement Parts and Ordering Information
51
Ordering Information
52
Chapter 5 Diagrams
58
Model Qt-740 Radiographic Table Wiring Diagram
59
Model Qt-750 Radiographic Table Wiring Diagram
60
4-Way Table Control Board A1 (Ay40-017T)
61
6-Way Table Control Board A1 (Ay40-002T)
62
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Quantum QT-750 Specifications
General
Brand
Quantum
Model
QT-750
Category
Medical Equipment
Language
English
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