II
Table of Contents
Section Name: Page #
1 PRELIMINARY INFORMATION....................................................................................................................................1-1
1.1 PRODUCT SAFETY..............................................................................................................................................................1-1
1.1.1 Notices........................................................................................................................................................................1-1
2 INTRODUCTION...................................................................................................................................................................2-3
2.1 INTRODUCTION............................................................................................................................................................2-3
2.2 MANUAL SCOPE.................................................................................................................................................................2-3
2.3 MANUAL SYMBOL KEY.....................................................................................................................................................2-3
2.4 GENERAL PRECAUTIONS...................................................................................................................................................2-4
2.4.1 PRODUCT ESD INFORMATION:.......................................................................................................................2-4
2.4.2 LASER SAFETY INFORMATION:.......................................................................................................................2-4
3 THEORY & OPERATION...................................................................................................................................................3-1
3.1 BASIC DATA DECODING SECTIONAL SUMMARYS.........................................................................................................3-1
3.1.1 Photodiode (Detector) Summary: .........................................................................................................................3-1
3.1.2 Pre-Amplifier Sectional Summary:.......................................................................................................................3-1
3.1.3 Signal Processor Section Summary:.....................................................................................................................3-1
3.1.4 Decoder Section Summary:....................................................................................................................................3-1
4 MS7600 HORIZON SCANNER HISTORY....................................................................................................................4-1
5 BOARD REMOVAL & INSTALLATION ......................................................................................................................5-1
5.1 DISASSEMBLING THE UNIT................................................................................................................................................5-1
5.1.1 Optics Bench Removal.............................................................................................................................................5-1
5.2 DECODE BOARD REMOVAL & INSTALLATION...............................................................................................................5-2
5.2.1 Decode Board Replacement...................................................................................................................................5-2
5.3 SIGNAL PROCESSOR BOARD REMOVAL & INSTALLATION..........................................................................................5-2
5.3.1 Signal Processor Board Removal..........................................................................................................................5-2
5.4 VLD REPLACEMENT PROCEDURE...................................................................................................................................5-3
5.4.1 VLD Removal Instructions:....................................................................................................................................5-3
6 PCB SPECIFICATIONS.......................................................................................................................................................6-5
6.1 SIGNAL PROCESSOR BOARD.............................................................................................................................................6-5
6.1.1 Signal Processor Board Functions.......................................................................................................................6-5
6.2 DECODE BOARD.................................................................................................................................................................6-6
6.2.1 DECODE Board Functions....................................................................................................................................6-6
7 TROUBLESHOOTING.........................................................................................................................................................7-7
7.1 AUDIBLE INDICATORS...............................................................................................................................................7-7
7.2 VISUAL INDICATORS..................................................................................................................................................7-8
7.3 FAILURE MODES...........................................................................................................................................................7-9
7.4 MS7320 SERIES TROUBLESHOOTING GUIDE...............................................................................................................7-10
8 SPECIFICATIONS & PINOUTS .......................................................................................................................................8-3
8.1 SCAN VOLUME SPECIFICATIONS (BASED ON 100% UPC BAR CODES).....................................................................8-3