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7-12 

TROUBLESHOOTING GUIDE (CONTINUED) 

 

SYMPTOMS  

POSSIBLE CAUSE(S) 

SOLUTION 

 
The bar code may have been 
printed incorrectly 
 

 
Check if it is a check digit/character/or border 
problem 
 

 
The scanner is not configured 
correctly for this type of bar 
code 
 

 
Check if check digits are set properly 
 

 
Scanner beeps at some bar 
codes and NOT for others 
of the same bar code 
symbology 
 

 
The minimum symbol length 
setting does not work with the 
bar code 
 

 
Check if the correct minimum symbol length is 
set 
 

KEYBOARD WEDGE ONLY 

 
The unit scans  the bar code 
but there is no data 
 

 
Configuration is not correct 
 

 
Make sure the scanner is  configured for the 
appropriate mode. 
 

 
 
The unit scans  but the data 
is not correct 
 

 
Configuration is not correct 
 

 
Make sure that the proper PC type AT, PS2 or XT 
is selected. Verify correct country code and data 
formatting are selected. Adjust intercharacter 
delay SYMPTOM 
 

 
 
The unit is  transmitting 
each character 
 

 
Configuration is not correct 
 

 
Increase the interscan code delay setting. Adjust 
whether the F0 break is transmitted. It may be 
necessary to try this in both settings. 
 

 

 
Alpha characters show as 
lower case 
 

 
Computer is in Caps Lock mode 
 

 
Enable Caps Lock detect setting of the scanner to 
detect whether the PC is operating in Caps Lock 
 

 

 
 
 
 

Summary of Contents for MS7600

Page 1: ...I Service Manual METROLOGIC INSTRUMENTS INC MS7600 Horizon Series...

Page 2: ...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 SIGN...

Page 3: ...tions 8 7 8 4 MS7600 HORIZON SCANNER SPECIFICATIONS 8 9 8 4 1 OPERATIONAL DESIGN SPECIFICATIONS 8 9 8 4 2 OVERALL PHYSICAL DIMENSIONS 8 10 8 4 3 ELECTRICAL CHARACTERISTICS 8 10 8 4 4 ENVIRONMENTAL DET...

Page 4: ...ce This Class B digital apparatus complies with Canadian ICES 003 Remarque Cet appareil num rique de la classe B est conforme la norme NMB 003 du Canada Caution Use of controls or adjustments or perfo...

Page 5: ...etzen Der Einsatz optischer Ger te mit dieser Laserausr stung erh ht das Risiko einer Sehsch digung Attenzione L utilizzo di sistemi di controllo di regolazioni o di procedimenti diversi da quelli des...

Page 6: ...13 RS232 IBM 46xx OCIA Aux High Impact Plastic Top MS7620 37 RS232 Light Pen Keyboard Wedge Stand Alone Keyboard USB Aux MS7625 13 RS232 IBM 4680 OCIA Stainless Steel Top MS7625 37 RS232 Light Pen Ke...

Page 7: ...laser beam even if the scanner appears to be nonfunctional Doing so could result in hazardous radiation exposure The MS7320 unit is rated as a CLASS IIA laser product as defined by The U S Federal La...

Page 8: ...he PCB with the Photodiode 3 1 2 2 Converts the electrical current to a voltage signal 3 1 2 3 Voltage signal is amplified by a factor of 1000 3 1 2 4 Ambient light noise is filtered out Resultant sig...

Page 9: ...4 1 4 MS7600 HORIZON SCANNER HISTORY MS7600 PROTOTYPE MS7600 A MS7600 B NEW SANYO VLD...

Page 10: ...5 1 1 3 Left the inner cover off by using the straps provided Figure 5 1 1 1 5 1 1 4 Using a Philips head screwdriver remove the screw and washer from the center of the optics bench Figure 5 1 1 2 5 1...

Page 11: ...r the flex cable coming from the Decoder Board connector J1 and the VLD connector J2 5 3 1 3 Remove two screws that attach the Signal Processor board to the Bench plastic case Figure 5 3 1 1 5 3 1 4 R...

Page 12: ...nto its bracket Do not glue yet 5 4 1 6 Place a SBT R71 resistor between 30 K Ohms and 43 K Ohms Normally a value of 36 K Ohms would fit when using a STANDARD Output window 33 K Ohms would fit when us...

Page 13: ...al processor board 5 4 1 12 Once the alignment is fixed up glue VLD by using LOCTITE 406 and accelerator LOCTITE 7455 to fast cure the glue 5 4 1 13 Clean the mark at the joystick Be careful and do ne...

Page 14: ...reflected off the bar code Converts received optical signal into electrical signal current of about 100 nanoamps Converts the electrical signal current to a suitable voltage signal level for the Deco...

Page 15: ...digital signals into universal ASCII character data The ASCII character data is then transmitted to the Host Computer System Stores unit configuration information including all possible other configu...

Page 16: ...ry Tone This tone is a failure indicator Refer to Failure Modes Three Beeps During Operation During operation of the scanner the red LED will flash while the scanner simultaneously beeps three times w...

Page 17: ...anner will beep once If the red LED does not flash or the scanner does not beep once then the bar code has not been successfully read Steady Amber and Steady Red After a successful scan the scanner tr...

Page 18: ...otor failure Return the unit for repair at an authorized service center Continuous Razzberry Tone with Both LEDs Off If upon power up the scanner emits a continuous razzberry tone then the scanner has...

Page 19: ...AM failure Contact a Metrologic Representative if the unit will not hold the programmed configuration Continuous razz tone on power up RAM or ROM failure Contact a Metrologic Representative if the uni...

Page 20: ...e first scan red LED stays on The scanner is configured to support some form of host handshaking but is not receiving the signal If the scanner is setup to support ACK NAK RTS CTS XON XOFF or D E veri...

Page 21: ...bar code but there is no data Configuration is not correct Make sure the scanner is configured for the appropriate mode The unit scans but the data is not correct Configuration is not correct Make su...

Page 22: ...ot operating properly Power up OK and scans OK but does not communicate properly to the host Cable not connected to the proper com port Check to make sure that the baud rate and parity of the scanner...

Page 23: ...ning parameters will be automatically chosen Aux port Scanner powers up but data is not relayed to the host The Aux com port may not be operating properly The Aux port scanner must be configured to se...

Page 24: ...8 3 8 SPECIFICATIONS PINOUTS 8 1 Scan Volume Specifications Based on 100 UPC Bar Codes...

Page 25: ...8 4 8 2 Depth of Field by Minimum Bar Code Element Width...

Page 26: ...nector Cable Pinout Connections 8 3 1 MS7320 Pinout Connections The MS7600 scanner interfaces terminate to 10 pin modular jacks located on the back of the unit The serial label indicates the model num...

Page 27: ...8 6...

Page 28: ...8 7 8 3 2 Cable Connector Configurations...

Page 29: ...port on the PC The pin assignments are as follows FIGURE 8 3 1 KEYBOARD WEDGE POWERLINK CABLE FIGURE 8 3 3 5 PIN DIN FEMALE FIGURE 8 3 2 6 PIN DIN MALE FIGURE 8 3 4 ADAPTER CABLE FIGURE 8 3 6 6 PIN M...

Page 30: ...age flow Scan Speed 2000 scans second Scan Pattern 5 fields of 4 parallel lines omnidirectional Scan Lines 20 Min Bar Width 0 127 mm 5 0 mil Decode Capability Autodiscriminates all standard bar codes...

Page 31: ...10 pin modular RJ45 jacks Cable Standard 2 1m 7 straight for other cables call Metrologic 8 4 3 ELECTRICAL CHARACTERISTICS ELECTRICAL MS7600 SPECIFICATIONS Input Voltage 5 2VDC 0 25V Power 2 6 W Opera...

Page 32: ...o 40 C 32 F to 104 F Storage Temperature 40 C to 60 C 40 F to 140 F Humidity 5 to 95 relative humidity non condensing Light Levels 4842 LUX 450 foot candles Contaminants Sealed to resist airborne part...

Page 33: ...canner has a label on the bottom of the unit The label contains information such as the model number date of manufacture serial number and caution information An additional caution label is located un...

Page 34: ...to the original purchase price This limited warranty does not extend to any Product which in the sole judgement of Metrologic has been subjected to abuse misuse neglect improper installation or accid...

Page 35: ...I BP 50057 Email info fr metrologic com 95947 ROISSY CDG CEDEX United Kingdom Metrologic Instruments UK Limited Tel 44 0 1256 365900 58 Tempus Business Centre Fax 44 0 1256 365955 Kingsclere Road Basi...

Page 36: ...92 5 262 628 5 280 162 5 280 164 5 304 788 5 321 246 5 324 924 5 396 053 5 396 055 5 408 081 5 410 139 5 436 440 5 449 891 5 468 949 5 479 000 5 532 469 5 545 889 No license right or sublicense is gra...

Page 37: ...9 16 Notes...

Page 38: ...9 17 Notes...

Page 39: ...9 18 Notes...

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