4700 Refrigerated Sampler Service Guide
Table of Contents
ix
3-25 Drain tube and drip pan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21
4-1 Control panel module removal/replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
4-2 Control panel wiring connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
4-3 4700 battery backup module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
4-4 Power supplies: old and new (protective cover removed) . . . . . . . . . . . . . . . . . . . 4-16
4-5 Fast-blow fuse on the new power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
4-6 Removing 230V adaptor from AC power cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
4-7 Remove power cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18
4-8 Electrical connections on 100V/120V compressors . . . . . . . . . . . . . . . . . . . . . . . . 4-18
4-9 Electrical connections on 230V compressors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19
4-10 CPU CBA cable routing in refrigerator rear wall . . . . . . . . . . . . . . . . . . . . . . . . 4-19
4-11 CPU CBA power cable and bulkhead connector . . . . . . . . . . . . . . . . . . . . . . . . . 4-20
4-12 Fan mounting screws and power cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20
4-13 Power supply back plate and mounting screws . . . . . . . . . . . . . . . . . . . . . . . . . 4-21
4-14 230V line cord plug adaptor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21
4-15 Remove power supply cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23
4-16 Line cord connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24
4-17 Removing the line cord from the mounting plate . . . . . . . . . . . . . . . . . . . . . . . . 4-24
5-1 Distributor arm (A), discharge tube (B), and stop (C) . . . . . . . . . . . . . . . . . . . . . . 5-4
5-2 Distributor arm positioning, discharge tube removed . . . . . . . . . . . . . . . . . . . . . . 5-5
5-3 Manual check of compartment heater operation . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
A-1 Location of serial tag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
A-2 4700 wiring diagram - 120V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
A-3 4700 wiring diagram - 230V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
A-4 4700 board connectors and functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5
A-5 4700 CPU schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-6
List of Tables
1-1 4700 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1-2 4700 Connector Pin Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
2-1 Pump Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2-2 Distributor Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29
3-1 Replacement Parts for 4700 Refrigerator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3-2 Refrigeration System Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
4-1 Test Point Functions and Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4-2 CPU Board Functional Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4-3 Control Panel Connector Identification and Wiring . . . . . . . . . . . . . . . . . . . . . . . 4-13
5-1 Service Menu (7378423): Compressor and Heater Control . . . . . . . . . . . . . . . . . 5-11
Содержание 4700
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Страница 30: ...4700 Refrigerated Sampler Service Guide Section 1 Introduction and General Guidelines 1 18 ...
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Страница 124: ...4700 Refrigerated Sampler Service Guide Appendix A Electrical Diagrams A 2 ...
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