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Advanced Instruments 4250 User Manual
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3255SM Rev24 041017
Advanced
®
Osmometer Model 3250
Advanced
®
Cryoscope Model 4250
Service Manual
2
Table of Contents
Default Chapter
3
Table of Contents
3
1 Introduction
5
Specifications
7
General Description and Purpose
11
Service Assistance
11
Safety/Regulatory Information
12
Symbol Conventions
12
General Cautions
12
Service & Maintenance Cautions
13
Hazardous Material Cautions
14
Regulatory Notices
14
Symbol Conventions
14
FCC Requirements
15
2 General Overview
21
General Overview
21
Calibration
23
Circuit Description
24
Power Supply
24
Front End
24
325605 Control Board Set
24
Processor Board
25
PCB605 Application Board
26
Other Circuit Components
27
Design Changes
29
Replacement Parts
30
Supplies & Accessories
32
3 Maintenance
33
Cleaning and Maintenance
35
Covers
37
Osmometer/Cryoscope Well Cleaning
37
Cleaning and Lubricating the Printer
39
Probe & Stir/Freeze Wire Alignment
40
4 Troubleshooting
41
Introduction
43
Freeze "Buzz" Amplitude
44
Stir Driver Noise
45
Head Sensor Adjustment
47
Head Up/Down Test
48
Power on Diagnostics
49
A/D Tests
49
Sample bin Setting
50
Block bin Setting
51
Stir Amplitude
51
Display/Printer Test
51
Beeper Test
52
Keypad Test
52
Barcode Test
52
Reset Serial Number
52
Instrument Software Updates
54
Performing FLASH Firmware Update
54
Troubleshooting Table
56
Block Probe (4D3340)
56
Keypad (325511R)
58
Sample Probe (3D3700)
61
Sample Probe (4D3102)
61
4
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Advanced Instruments 4250 Specifications
General
Brand
Advanced Instruments
Model
4250
Category
Medical Equipment
Language
English
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