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Service Instructions CX16/A402/CX17/A405/CX18/A421/CX19/A425 Retail Scales CX17 CX19/A425 CX18/A421 A405 76102–121 Issue 4 CX16/A402 26.01.98 Introduction Safety This equipment is supplied by a mains voltage which can cause electric shock injury. Before removing the machine’s cover, disconnect completely the mains power supply and ensure that it cannot be connected inadvertently by other persons. If the cover is removed, do not apply power to the unit unless specifically instructed to do so in these instructions. When working on live equipment, exercise great care, use insulated tools and test equipment, and do not work alone. When testing or fault–finding the unit, exercise extreme care. Ensure that any test equipment used is in good condition and capable of withstanding the voltages existing. Tools used must have insulated hand grips. Test probes and jumper leads must be in good condition and must have adequate insulation. Test probes with claw ends and jumper leads must not have insecure parts which may fail during use. The power plug must be inserted in a socket outlet provided with a protective earth contact. The electrical supply at the socket outlet must provide over–current protection of 3 amperes. The socket outlet must be within easy reach for isolation of the machine for cleaning and servicing. Do not clean the machine whilst it is switched on. For cleaning use only a clean cloth moistened with water containing a small amount of domestic detergent. When lifting, moving or supporting the machine take its weight into consideration. When handling PCBs, ensure that full anti–static precautions are observed. To clean the print head use print head cleaning kit part number 76801–102 and follow the instructions supplied with the kit. Do not use metallic objects on the print head. Service Instructions 1 Service Mode Service Mode Entering service mode Method 1 This method does not give access to calibration, allow you to change Digit 1 (capacity) in Bank 1 or modify the currency conversion rates during configuration. 1 Switch the machine on. 2 Service PIN number 9 4 6 If machine is excessively out of balance, raw balance weight will be displayed here. 7 Type in the service PIN number during the warm–up sequence. Default is 9467. Machine type Fractions of a division. Method 2 CX16/A402 1 With the machine switched on, short across the test pads. Access is via the underside of the machine. See Page 25. Weight display shows the current weight on the pan, the unit price display shows sub–divisions of the current weight value. CX17/A405 1 2 With the machine switched on, press the test switch. Access is via the underside of the machine. See Page 26. Service Instructions Service Mode CX18/A421/CX19/A425 1 With the machine switched on, press the test switch. Access is via the printer compartment. OR Exiting service mode To exit service mode: switch the machine off then on again, follow Method 2 or press the HOME/EXIT key. Service Instructions 3 Service Mode Setting machine type The default machine type is CX17. To set the type of machine to CX16, CX18 or CX19: 1 Switch the machine on. 2 During warm–up sequence, press the top left–hand key or any of the adjacent three keys, as appropriate (machine will bleep). 7 4 1 3 8 5 2 0 9 6 3 Enter service mode using Method 2. See Page 2. Display changes: CX16 to CX17 to CX18 to CX19 etc. 4 Press the top left–hand key with required machine type displayed. 7 4 1 8 5 2 0 9 6 3 Machine runs through its warm–up sequence and returns to customer mode .... OR 4 Service Instructions Service Mode The service menu Enter service mode using Method 1 or Method 2. See Page 2. TEST CONFIG CALIBRATION BANK 1 ZERO BANK 2 FULL DIAGNOTICS MANAGER PIN SERVICE PIN STATISTICS PRINT DENSITY PRINTER SETUP SENSOR CALIB EURO RATE CONVRT SURE ? DCU LOOPBACK NET LOOPBACK BUTTON TEST BOOT DRAWER PSU = Access can only be gained via the test switch/pad. CX17 Top level of service menu. Indicates machine model: CX16, CX17, CX18 or CX19. CONFIG Configuration. BANK 1 Bank 1 options. BANK 2 CALIB DIAG Bank 2 options. Calibration. Diagnostics. DCU LOOP B DCU communications test. Use echo plugs. NET LOOP B Network communications test. BUTTON TEST Test each of the keyboard keys manually. BOOT Cold start. Most of the programmed information will be lost. Reverts to factory setting. Opens cash drawer. DRAWER PSU PIN O 4296 Not used. Manager PIN number. (View only.) PIN S Edit service PIN number. (Default is 9467.) STATS PRINT Print out of print scale operational data. Edit print density and calibrate sensor. DENSITY SENSOR EURO RATE CONVRT Service Instructions Edit print density using left and right arrow keys. Calibrate paper sensor. Enter conversion rates and convert PLU prices. Enter the currency conversion rate. Convert the PLU price information using the conversion rate. 5 Service Mode Useful keys in service mode ENTER Takes you down one level. Left. ENTER EXIT D Right. Takes you to top level. If you are at top level, takes you to sales mode. HOME Up one level. ENTER SHIFT then Takes you to top level. ENTER CLEAR SHIFT SHIFT Zeros a numeric field. During configuration, moves you to the first digit of the selected bank. then During configuration, moves you to the last digit of the selected bank. then Displayed text 6 Å , Æ $ £ # g % – ° ’ A B C D E F G H I J K L M / & . Ö : = ? ! * Ü @ + ) Ä ( N O P Q R S T U V W X Y Z Service Instructions Service Mode Configuration 1 ENTER Type in the 16–digit configuration code number for Bank 1. Select the option numbers for each digit from the table for Bank 1 on Page 8. 2 3 ENTER Type in the 16–digit configuration code number for Bank 2. Select the option numbers for each digit from the table for Bank 2 on Page 12. 4 5 ENTER Digit numbers 2 1 4 3 6 5 8 7 10 9 12 14 16 11 13 15 Flashes between bank number and digit number (for example: bank 1 ↔ digit 13) Service Instructions 7 Service Mode Bank 1 DIGIT/OPTION 1 Capacity Ca acity 0 1 2 3 4 5 25lb x 1/8oz 30lb x 0.01 50lb x 0.01 6kg x 1g 6kg x 2g AVR 6kg 6 7 8 9 A B 12kg x 2g 15kg x 5g AVR 15kg 25kg x 5g 30kg x 5g AVR 30kg C D E F 30lb/15kg 60kg x 20g 150kg x 50g 300kg x 100g DIGIT/OPTION 0 1 2 3 2 Minimum weight disturbance Minimum pre–pack weight 1 division 1 division 4 divisions 1 division 10 divisions 1 division 20 divisions 1 division 4 5 6 7 2 Minimum weight disturbance Minimum pre–pack weight 1 division 20 divisions 4 divisions 20 divisions 10 divisions 20 divisions 20 divisions 20 divisions DIGIT/OPTION 0 1 2 3 4 5 6 7 3 Balance range Balance at power up Large step behind zero Zero track zero indicator 4% NO NO NO 10% NO NO NO 4% YES NO NO 10% YES NO NO 4% NO YES NO 10% NO YES NO 4% YES YES NO 10% YES YES NO 8 9 A B C D E F 3 Balance range Balance at power up Large step behind zero Zero track zero indicator 4% NO NO YES 10% NO NO YES 4% YES NO YES 10% YES NO YES 4% NO YES YES 10% NO YES YES 4% YES YES YES 10% YES YES YES DIGIT/OPTION 4 8 Tare type 0 1 2 3 NON–CUMULATIVE, FREE, NON–GRADUATED, NON–STORED, NO SEPARATE TARE DISPLAY NON–CUMULATIVE, FREE, NON–GRADUATED, STORED, NO SEPARATE TARE DISPLAY NON–CUMULATIVE, FREE, GRADUATED NON–STORED, NO SEPARATE TARE DISPLAY NON–CUMULATIVE, FREE, GRADUATED, STORED, NO SEPARATE TARE DISPLAY 4 5 6 7 CUMULATIVE, FREE, NON–GRADUATED, NON–STORED, NO SEPARATE TARE DISPLAY CUMULATIVE, FREE, NON–GRADUATED, STORED, NO SEPARATE TARE DISPLAY CUMULATIVE, FREE, GRADUATED NON–STORED, NO SEPARATE TARE DISPLAY CUMULATIVE, FREE, GRADUATED, STORED, NO SEPARATE TARE DISPLAY 8 9 A B NON–CUMULATIVE, FREE, NON–GRADUATED, NON–STORED, SEPARATE TARE DISPLAY NON–CUMULATIVE, FREE, NON–GRADUATED, STORED, SEPARATE TARE DISPLAY NON–CUMULATIVE, FREE, GRADUATED NON–STORED, SEPARATE TARE DISPLAY NON–CUMULATIVE, FREE, GRADUATED, STORED, SEPARATE TARE DISPLAY C D E F CUMULATIVE, FREE, NON–GRADUATED, NON–STORED, SEPARATE TARE DISPLAY CUMULATIVE, FREE, NON–GRADUATED, STORED, SEPARATE TARE DISPLAY CUMULATIVE, FREE, GRADUATED NON–STORED, SEPARATE TARE DISPLAY CUMULATIVE, FREE, GRADUATED, STORED, SEPARATE TARE DISPLAY Service Instructions Service Mode DIGIT/OPTION 0 1 2 3 4 5 Tare cancellation type Negative tare display Cancel by zero key Cancel by tare key DIGIT/OPTION RETAINED NO YES YES RETAINED YES YES YES SEMI–SELF NO YES YES SEMI–SELF YES YES YES RETAINED NO NO YES 5 6 7 8 9 5 Tare cancellation type Negative tare display Cancel by zero key Cancel by tare key DIGIT/OPTION RETAINED YES NO YES SEMI–SELF NO NO YES SEMI–SELF YES NO YES RETAINED NO YES NO RETAINED YES YES NO A B C D E 5 Tare cancellation type Negative tare display Cancel by zero key Cancel by tare key DIGIT/OPTION SEMI–SELF NO YES NO SEMI–SELF YES YES NO RETAINED NO NO NO RETAINED YES NO NO SEMI–SELF NO NO NO 5 SEMI–SELF YES NO NO Tare cancellation type Negative tare display Cancel by zero key Cancel by tare key DIGIT/OPTION F 0 1 2 3 4 5 6 7 Bleep behind zero Price/tare interlock Fix tare but not unit price Proportional tares DIGIT/OPTION NO NO NO NO NO NO YES NO NO YES NO NO NO YES YES NO YES NO NO NO YES NO YES NO YES YES NO NO YES YES YES NO 8 9 A B C D E F 6 NO NO NO YES NO NO YES YES NO YES NO YES NO YES YES YES YES NO NO YES YES NO YES YES YES YES NO YES YES YES YES YES 6 Bleep behind zero Price/tare interlock Fix tare but not unit price Proportional tares DIGIT/OPTION 0 1 2 3 4 7 Default sales mode Display subtotal UP/PLU key Open cash drawer with zero total UNIT PRICE YES YES YES UNIT PRICE NO YES YES PLU YES YES YES PLU NO YES YES UNIT PRICE YES NO YES 5 6 7 8 9 7 Default sales mode Display subtotal UP/PLU key Open cash drawer with zero total UNIT PRICE NO NO YES PLU YES NO YES PLU NO NO YES UNIT PRICE YES YES NO UNIT PRICE NO YES NO A B C D E PLU NO YES NO UNIT PRICE YES NO NO UNIT PRICE NO NO NO PLU YES NO NO 7 Default sales mode Display subtotal UP/PLU key Open cash drawer with zero total Service Instructions PLU YES YES NO 9 Service Mode F 7 Default sales mode Display subtotal UP/PLU key Open cash drawer with zero total PLU NO NO NO DIGIT/OPTION 0 1 2 3 8 Numeric entry auto clear time–out Price base default Single price base machine Price two is the default NO lb/kg NO NO NO 1/ lb/100g 4 NO NO YES lb/kg NO NO YES 1/ lb/100g 4 NO NO 4 5 6 7 8 Numeric entry auto clear time–out Price base default Single price base machine Price two is the default NO lb/kg YES NO NO 1/ lb/100g 4 YES NO YES lb/kg YES NO YES 1/ lb/100g 4 YES NO 8 9 A B 8 Numeric entry auto clear time–out Price base default Single price base machine Price two is the default NO lb/kg NO YES NO 1/ lb/100g 4 NO YES YES lb/kg NO YES YES 1/ lb/100g 4 NO YES C D E F 8 Numeric entry auto clear time–out Price base default Single price base machine Price two is the default NO lb/kg YES YES NO 1/ lb/100g 4 YES YES YES lb/kg YES YES YES 1/ lb/100g 4 YES YES DIGIT/OPTION 0 1 2 3 9 Dummy zero in unit price Total price if weight –ve Change calculation (receipts) Receipt total currency symbols DIGIT/OPTION NO ¨000000” YES YES YES ¨000000” YES YES NO BLANK YES YES YES BLANK YES YES 4 5 6 7 9 Dummy zero in unit price Total price if weight –ve Change calculation (receipts) Receipt total currency symbols DIGIT/OPTION NO ¨000000” NO YES YES ¨000000” NO YES NO BLANK NO YES YES BLANK NO YES 8 9 A B 9 Dummy zero in unit price Total price if weight –ve Change calculation (receipts) Receipt total currency symbols DIGIT/OPTION NO ¨000000” YES NO YES ¨000000” YES NO NO BLANK YES NO YES BLANK YES NO C D E F 9 NO ¨000000” NO NO YES ¨000000” NO NO NO BLANK NO NO YES BLANK NO NO Dummy zero in unit price Total price if weight –ve Change calculation (receipts) Receipt total currency symbols DIGIT/OPTION 0 1 2 3 4 5 6 7 8 10 1 1 5 5 10 10 1 5 1 10 5 10 0.5 0.5 1 25 25 25 10 Totals/transactions rounding Final total rounding Service Instructions Service Mode DIGIT/OPTION 11 Date format Date type 0 1 2 3 4 5 DD MM YY NUMERIC MM DD YY NUMERIC YY MM DD NUMERIC DD MMM YY ALPHA MMM DD YY ALPHA YY MMM DD ALPHA 0 1 2 3 4 0 POINT 1 POINT 2 POINT 3 POINT 0 COMMA 5 6 7 8 1 COMMA 2 COMMA 3 COMMA 0 UP/1 TP COMMA DIGIT/OPTION 12 Number of decimal places Punctuation 12 Number of decimal places Punctuation DIGIT/OPTION 0 1 2 3 4 5 Leading zero suppression Operator subtotal timeout (seconds) DIGIT/OPTION NO 1 YES 1 NO 2 YES 2 NO 3 YES 3 6 7 8 9 13 NO 4 YES 4 NO 5 YES 5 13 Leading zero suppression Operator subtotal timeout (seconds) DIGIT/OPTION 14 Number of operators Direct entry pre–pack 0 1 2 3 4 5 6 7 NONE NO 1 NO 2 NO 5 NO NONE YES 1 YES 2 YES 5 YES DIGIT/OPTION 0 1 2 3 4 5 15 PLU auto recall time–out Default printer mode Pre–pack enables stored/grad tare NONE LABEL NO 0.6s LABEL NO 1.0s LABEL NO NONE RECEIPT NO 0.6s RECEIPT NO 1.0s RECEIPT NO 6 7 8 9 A B 15 PLU auto recall time–out Default printer mode Pre–pack enables stored/grad tare NONE LABEL YES 0.6s LABEL YES 1.0s LABEL YES NONE RECEIPT YES 0.6s RECEIPT YES 1.0s RECEIPT YES DIGIT/OPTION 0 1 2 3 4 5 6 16  $ R F Kr DM S 7 8 9 A B C D Fr. f Lit P E K M E F G H I J K D RM L N$ Esc Pta NONE Currency symbols L M N O P Q R Rp mk PX SR zt Kc SK S T U V W X Y kr Dhs Won bt Pts EEK Lt Z Euro Service Instructions 11 Service Mode Bank 2 DIGIT/OPTION 1 Triple zero key Printed boxes 0 1 2 3 NO NO YES NO NO YES YES YES DIGIT/OPTION 0 1 2 3 4 2 A B C D E Receipt algorithms (See table on Page 13.) DIGIT/OPTION 3 Language 0 1 2 3 4 5 ENGLISH SPANISH RSA FRENCH GERMAN ITALIAN 6 7 8 9 A B C D E F PORTUGUESE G MEXICAN SWEDEN FINLAND ESTONIA LITHUANIA DUTCH DANISH DIGIT/OPTION N/A CZECH GREEK H HUNGARY 0 1 2 3 Printer modes Time in DATE 1 field DIGIT/OPTION NO PRINTER NO RECEIPT ONLY NO LABEL ONLY NO LABEL + RECEIPT NO 4 5 6 7 4 NO PRINTER YES RECEIPT ONLY YES LABEL ONLY YES LABEL + RECEIPT YES 4 Printer modes Time in DATE 1 field DIGIT/OPTION 5 0 1 2 3 USA PRICE BASE USA (Price Mult) Sales key layout (Price Mult) Manager key layout QWERTY QWERTY QWERTY ABCDEF 5 6 7 8 9 USA USA (No Price Mult) (No Price Mult) NO PRICE BASE NO PRICE BASE QWERTY ABCDEF QWERTY, DOUBLE AND TRIPLE ZERO ABCDEF, DOUBLE AND TRIPLE ZERO DIGIT/OPTION 5 Sales key layout Manager key layout PRICE BASE .ABCDEF DIGIT/OPTION 6 4 NO PRICE BASE Receipt formats Condensed format (Minimum NO PRICE BASE ABCDEF 0 1 2 3 4 5 6 7 8 9 1* NO 2 NO 3 NO 4 NO 5 NO 1 YES 2 YES 3 YES 4 YES 5 YES number of line feeds) DIGIT/OPTION 7 Add label 0 1 2 3 4 NONE TRANS+TOTAL TOTAL ONLY RECEIPT ONLY TRANS+RECEIPT DIGIT/OPTION 0 1 2 A 136Ω – 144Ω B 145Ω – 153Ω C 154Ω – 162Ω NORMAL NORMAL NORMAL 3 4 5 Print head classification (print density) – Axiohm Print head classification (print density) – Rohm Paper sensitivity DIGIT/OPTION D 163Ω – 171Ω E 172Ω – 180Ω F 181Ω – 188Ω NORMAL NORMAL NORMAL 6 7 8 8 A 136Ω – 144Ω B 145Ω – 153Ω C 154Ω – 162Ω LOW LOW LOW 8 Print head classification (print density) – Axiohm Print head classification (print density) – Rohm Paper sensitivity 8 12 Print head classification (print density) – Axiohm Print head classification (print density) – Rohm Paper sensitivity Service Instructions Service Mode 8 Print head classification (print density) – Axiohm Print head classification (print density) – Rohm Paper sensitivity DIGIT/OPTION 9 Weight filtering type 9 Weight filtering type LOW LOW LOW 3 4 5 Av 0.2s, 50Hz Av 0.5s, 10Hz Av 1.0s, 10Hz Av 2.0s, 10Hz Av 4.0s, 5Hz IIR 5Hz 6 7 8 9 A IIR 2Hz IIR 1Hz IIR 0.5Hz IIR 0.25Hz IIR 0.1Hz 0 Tax inclusive/exclusive NO TAX RATES 1 2 3 4 INCLUSIVE INCLUSIVE INCLUSIVE INCLUSIVE COMBINED COMBINED SEPARATE SEPARATE YES NO YES NO 5 6 7 8 9 Tax inclusive/exclusive EXCLUSIVE EXCLUSIVE EXCLUSIVE EXCLUSIVE INCLUSIVE Receipt taxcombined/ separate/German Tax ref in PLU description COMBINED COMBINED SEPARATE SEPARATE GERMAN NO YES NO YES YES DIGIT/OPTION * F 181Ω – 188Ω 2 DIGIT/OPTION 11 B E 172Ω – 180Ω 1 Receipt tax combined/ separate/German Tax ref in PLU description 10 A 0 DIGIT/OPTION 10 9 D 163Ω – 171Ω Net weight USA total price legend 0 1 2 3 GRAMS NO oz – lb/oz NO GRAMS YES oz – lb/oz YES Receipt format (Option 0 in Digit 6, Bank 2) is not available when Digit 1 in Bank 1 (25 lb x 1/8 oz capacity) is selected as 0. Receipt algorithms A B C D E 1 weighed commodity ALGORITHM 1 transaction 1 transaction 1 article 1 article 1 transaction n x (+ve non–weighed commodities) 1 transaction 1 transaction n articles n articles 1 transaction n x (–ve non–weighed commodities 0 transaction 1 transaction 0 articles n articles 0 transactions 1 voided commodity 0 transaction 0 transaction 0 articles 0 articles 0 transactions –ve non– weighed included –ve non– weighed included –ve non– weighed included –ve non– weighed included –ve non– weighed not included item count value Service Instructions 13 Service Mode Calibration 1 Make sure weighplate is empty, then .... ENTER 2 ENTER 3 Add full load (that is, capacity of machine) to weighplate, then .... ENTER (Machine produces a long bleep) If calibration is unsuccessful the machine will return to calibration menu .... Repeat Steps 1, 2 and 3. 4 Remove full load, then .... ZERO 14 Service Instructions Service Mode Diagnostics DCU LOOP B 1 Fit echo plug to machine’s DCU socket. Fit link across pins 3 and 2 on echo plug and across pins 4 and 8. Echo plug (D–type connector) 4 5 9 2 3 8 2 7 1 6 Fit echo plug to machine, then .... ENTER OR NET LOOP B Ensure scale is correctly linked to at least one other scale and that they are both correctly configured to run on the network. 3 ENTER Service Instructions OR 15 Service Mode BUTTON TEST 1 2 ENTER Key number Press required key .... 7 4 1 9 6 3 8 5 2 0 Button return codes for CX16/A402 08 33 34 35 09 10 11 12 13 14 15 16 36 37 38 17 18 19 20 21 22 23 24 39 40 41 26 27 28 29 30 31 32 42 43 44 01 25 06 07 02 03 04 05 Button return codes for CX17/A405/CX18/A421/CX19/A425 16 05 13 21 29 53 69 45 61 37 24 23 22 38 39 04 12 20 28 52 68 44 60 36 56 55 54 62 40 03 11 19 27 51 67 43 59 35 48 46 63 64 02 10 18 26 50 66 42 58 34 16 14 70 71 01 09 17 25 49 65 41 57 33 07 06 72 3 Exit by pressing service test switch; takes you back to top level of service menu. 47 15 08 Service Instructions Service Mode BOOT 1 2 ENTER To confirm .... ENTER Press any other key to exit without ’booting’ the system. DRAWER 1 ENTER Cash Drawer opens PSU Not used Manager pin number View only – you cannot edit this number in service mode. Service pin number 1 ENTER Default number Service Instructions 17 Service Mode 2 New service PIN number 1 3 2 3 4 ENTER (Machine bleeps) Statistics 1 ENTER LP = number of lines printed MA = amount of time machine has been switched on (minutes) PU = number of times machine has been switched on BO = ’Brown Out’ – number of times machine has stopped operating (that is, dropped below a certain voltage) but has not switched off MnST = minimum starting temperature of the machine (degrees centigrade) MxST = maximum starting temperature of the machine (degrees centigrade) MnHT = minimum print head temperature reached (degrees centigrade) MxHT = maximum print head temperature reached (degrees centigrade) PTV = photocell set–up CPU = processor clock speed 18                        Service Instructions Service Mode Printer setup DENSITY 1 ENTER 2 or 3 ENTER SENSOR 1 Make sure there is no printer paper inside the printer, then .... ENTER Service Instructions 19 Service Mode Euro CONVERSION RATE 1 Default rate is 1.00 ENTER 2 New conversion rate 1 3 2 3 4 5 6 To move decimal place ... or 4 ENTER 20 Service Instructions Service Mode PLU PRICE CONVERSION 1 ENTER 2 ENTER ... to convert. or CLEAR Service Instructions or SHIFT ENTER ... to exit without converting. 21 Service Mode Error messages The following error messages indicate hardware faults. to Message Description H ERR 01 EEPROM failure. Detects a failure in the EEPROM data. This can occur when the machine has not been configured. PROM failure. An error has been detected in the PROM data. Internal RAM failure. An error has been detected in the RAM contained in the microprocessor. External RAM failure. An error has been detected in the machine RAM. No print head. No connection to a print head has been detected. Incorrect power. Machine configuration and print head type inconsistent. Calibration fail. Machine calibration has failed or is not possible. Sensor failure. The print head sensor has failed. Unsteady weight. The weight applied to the machine is unsteady during the calibration process Invalid configuration. The configuration is incorrect. Network failure. Network card faulty. H ERR 02 H ERR 03 H ERR 04 H ERR 05 H ERR 06 H ERR 07 H ERR 08 H ERR 09 H ERR 10 H ERR 11 22 Service Instructions Links and Fuses Links and Fuses Main PCB LK2: link pins 1 and 2 = 1Mb RAM fitted; link pins 2 and 3 = 4Mb RAM fitted LK3: link pins 1 and 2 = 1Mb EPROM fitted; link pins 2 and 3 = 2/4Mb EPROM fitted LK4: link fitted = battery ON; link not fitted = battery OFF FS1: fuse, 4A, cartridge type (70662–174) Service Instructions FS2: fuse, as FS1 LK1: link fitted = AXIOHM printer fitted; no link fitted = ROHM printer fitted 23 Links and Fuses Display PCB (CX16/A402/CX17/A405) LK1: link fitted = customer display; link not fitted = vendor display FS1: fuse, 200mA, cartridge (70662–180) Display PCB (CX18/A421/CX19/A425) FS1: fuse, 200mA, cartridge type (70662–180) 24 LK1: link fitted = customer display; link not fitted = vendor display Service Instructions External Connectors External Connectors CX16/A402 Test pads Mains ON/OFF switch Mains input socket Mains fuseholder with mains fuse DC input socket DCU socket Interscale network sockets Service Instructions Cash drawer socket 25 External Connectors CX17/A405 Inter–scale network sockets DCU socket Battery socket Mains fuse holder with mains fuse Cash drawer socket Power cable socket Test switch Mains on/off switch 26 Service Instructions External Connectors CX18/A421/CX19/A425 DCU socket Mains on/off switch Battery socket Cash drawer socket Interscale network sockets Fuse holder with mains fuse Fuse rating sticker Mains cable socket Socket plate Service Instructions 27 External Connectors Socket details Network sockets: Two RJ11, 4–pin sockets. Two connectors are used to provide network in and network out connections. Both connectors are the same so it does not matter which is ’IN’ and which is ’OUT’. Both ends of a network connection must be terminated. See Page 29 for network connection details. DCU (RS232) socket: 9–way, D–type socket. Cash drawer socket: 3–pin round socket. Battery input socket: 3–pin round socket. Socket Pin Signals Pin Number Network Socket Cash Drawer Socket Battery Input Socket 1 N/C N/C +35V Battery +ve IN 2 * Phase B RXD Cash drawer solenoid drive Battery –ve IN 3 * Phase A TXD N/C GND 4 N/C RTS 5 GND 6 N/C 7 N/C 8 +5V * 28 DCU Socket Network pair. Service Instructions Network Connection Details Network Connection Details Connections Scale to scale connections 1234 1234 1 1234 1234 2 Network connectors: Two 4 way modular plugs, crimped to the cable. Crimp tools are as follows:– AMP Part No. 1–231652–3 or Part No. 734218–1 MOLEX Part No. 69008–1150 + Die set 69008–1125 STEWART Part No. + Die set 2940220–01 2905017–01 Cable colours: 1 = Blue/White 3 = White/Orange 2 = Orange/White 4 = White/Blue Interscale network connections Note: The twisted pairs must be connected such that one pair is used for pins 2 and 3, the second pair is used for pins 1 and 4. Failure to do so may result in unreliable communication. T = 100Ω terminating resistor N/C N/C T T N/C N/C 12 3 4 12 3 4 1 Service Instructions 12 3 4 12 3 4 2 12 3 4 12 3 4 n 29 Network Connection Details Network cable The network interconnections between machines comprise a two–wire, twisted pair connection system with modular plugs to the Western Electric FCC 68 standard. The plugs are a four–way, four–pole type, as used throughout the world for networking and data communications as well as standard telephone interconnecting. 1 2 3 n T T Cable Cable terminator Minimum length = 1.8 m Maximum length = 120 m The interconnection cables must be manufactured to suit the particular installation. The parts required are: Four–pole, four–way unshielded modular plugs: AMP Part No. MOLEX Part No. STEWART Part No. ITT CANNON Part No. 5–641334–2 90075–0027 937–SP–3044 195181–6520 Suitable Parts: Alpha Beldon Beldon BICC Mod–tap 30 55262 9562 1227A H9612 S39102 Service Instructions Network Connection Details Cable specification Caution: To connect the machines together on the network you must use cable of the correct specification. Type Twisted pair Wiring Solid copper 22, 24 or 26 AWG Number of twists per metre 7 minimum D.C. resistance 93.7Ω per metre maximum Characteristic impedance 105Ω ±20% at 1MHz Maximum attenuation 16.0 dB per 100 metres at 5MHz Any cable compliant with IEEE 802.31 (10 base T) is also suitable. Cable connectors Caution: It is important to use a good quality crimping tool as it has been found that ones of poorer quality have failed to provide reliable connections. Caution: The cable connections must not be twisted. The connectors must be type RJ11. They must be attached to the cable using a good quality crimping tool. If the cable is twisted the network can appear to operate correctly but will become unreliable due to any combination of the following: D adding scales to the network D increasing the overall network cable length D network traffic becomes high. Before fitting the connectors to the network you must make sure that there are no twists in the cable or open circuit connections as faults under normal network operation are not easily detected. Terminating resistors For the network to operate reliably terminating resistors must be fitted at both extremes of the cable. They must have a nominal impedance of 100Ω to correspond with that of the twisted pair cable. Not fitting the terminal resistors has a similar effect on the network as having a twist in the cable, see Cable connectors on Page 31. Service Instructions 31 Network Connection Details Test ticket The test ticket shows the status of the network. In the following example the test ticket was produced on a scale with a network ID of 1 which was configured as the server; there is one other scale connected on the network which is a client with a network ID of 2. Available network IDs Scale’s ID where: ‘S’ = server ‘C’ = client ‘–’ = no scale detected Network ID where test ticket was produced The network information, printed at the bottom of the test ticket, will only be printed if the network interface PCB is functioning correctly and a valid scale network ID has been entered. If the interface PCB is faulty or is not fitted then network information will not be printed. If the interface PCB is functioning correctly but the scale’s network ID is zero then the message NETCARD FITTED will be printed on the test ticket. 32 Service Instructions Network Connection Details Network error messages N CODE 4 Description/Action There are at least two scales attempting to join the network with the same network ID. N CODE 5 Remove the duplicate network IDs. Either, there are no servers or, there are two or more servers connected to the network. Message If there are no servers on the network configure one of the scales as a server. If there are two or more servers remove additional servers. N CODE 10 N CODE 11 Although many retries were made the packet did not successfully arrive at its destination. This is a critical error possibly caused by some form of media data corruption. Corrupted data is not acknowledged by the receiving node hence the message. Media data corruption could be due to: a) Incorrectly specified cable . b) Incorrectly specified termination resistors. c) Faulty network PCB. The network PCB was working but has since failed. This code is only reported when the scale is first switched on and can be due to the network PCB having failed or not making proper electrical contact with the SIMM connector or the scale’s main PCB. LOCAL The scale has become disconnected from the network. Service Instructions 33 Parts List Parts List CX16/A402 Keyboard overlay (variant) Weighplate (variant) Dummy overlay (65318–862) Window (65318–849) Output plate (65376–428) Cover moulding (61333–193) Membrane keyboard (70785–697) Spirit level window (65517–120) Window (65318–849) Mains plug (variant) Base moulding (61661–177) Screw, No.8 x 1/2” Rec. Pan Hd. (23818–441) Foot (61664–151) Nut, M8 thin (13821–121) 34 Rubber bumper (18166–001) Service Instructions Parts List Thermal tally roll (66258–132) Access door moulding (66238–101) Spindle receipt roll (63218–111) M4 x 8 rec. pan hd. screw (13755–114) Heyco bung (28143–004) Printer cover moulding assembly (61333–208) Printer (70555–114) Side wall moulding (61778–107) Screw, M4 x 8, Rec. Pan Hd. (13755–114) Base moulding (61662–283) Washer, M4 (15711–204) Receipt printer (Axiom) cleaning card (76801–102) Service Instructions 35 Parts List Seal (65318–866) Conductive stud (63218–110) Cross (68477–508) Transducer retainer (61724–114) Plastic snap rivet (13858–259) Main PCB assembly (71014–711) Mains transformer and loom assembly (240V, 70668–271. 110V, 70668–270)) Mains input plate assembly (70785–776) Transducer assembly (variant) Insert moulding – with hole (65528–105), blank (65528–106) 36 Service Instructions Parts List Tower display housing (61253–196) Screw, M6 x 40, rec. pan hd. (13755–151) Washer, M6, plain (15711–206) Washer, M6, shakeproof (15713–120) Vendor VF display PCB assembly (71014–764) Display screen (variant) Customer VF display PCB assembly (71014–764) Masking plate (65336–179) Display screen (variant) Screw, No.4 x 12, self tap. (13831–057) Column (61656–146) Casting, tower display (61656–148) Screw, M4 x 6, taptite (for securing earth tag) – (13838–023) Screw, M6 x 20, hex. socket button hd. (13818–406) Cover plate, tower display (65363–444) Washer, M6, plain (15711–206) Screw, M6 x 25, hex. hd. (13712–107) Washer, M6, plain (15711–206) Screw, M6 x 20, hex. hd. (13712–106) End plate (66211–132) Washer, M6, plain (15711–206) Screw, M6 x 12, socket hd. cap (13811–138) Service Instructions 37 A405 Weighplate (variant) Cross (68481–138) Screw (13811–141) Printer door assembly (70228–248) Washer (15711–206) Screw (23818–441) Ticket mouth assembly (70076–713) Instrument head nut (65522–403) LCD blank screen (67873–765) Cover moulding (61333–192) Cross spacer block (65331–320) Display bracket (63673–111) Front chassis (66226–123) Display PCB (vendor) – (71014–764) Pillar, short (63542–418) Main PCB insulator (65358–120) Main PCB assembly (71014–711) Screw (13758–544) PCB miniature support (18137–372) Washer, shakeproof (15711–205) Printer assembly (70558–532) Base skirt (61661–175) Screw (23818–441) Label print roll (Rohm) cleaning kit (76801–103) 38 Service Instructions Vendor display screen (variant) Customer display screen (variant) Keyboard bezel (68773–631) Mains transformer and loom assembly (240V, 70668–271. 110V, 70668–270)) Screw , M4 x 8 rec. pan hd. (13758–530) Keyboard cover (65618–119) Keyboard overlay (variant) Membrane keyboard assembly (70785–751) Screw (including sems washer), M5 x 16 rec. pan hd. (13758–544) Display bracket (63673–110) Washer, plain (15711–205) Transformer bracket (66176–124) Rear display support (65379–331) Display PCB (customer) Mains plug/IEC connector (variant) Sub base casting (61661–176) Nut, M8 thin (13821–121) Foot (61664–151) Stamping plate assembly (70421–226) Rubber bumper (18166–001) Service Instructions 39 Transducer assembly (variant) Mains input plate assembly (70785–773) Mains fuse, 2.0A (70662–157) LCD support bracket (61778–106) Pillar, long (63542–406) Hole plug (18136–447) Spirit level boot (61355–125) Spirit level bulb (68777–106) Connector plate (65376–199) Connector polate overlay (65348–106) Spirit level bubble housing (66438–108) 40 Service Instructions CX17 Diagram only shows part numbers for parts that are different from the A405. Weighplate (68412–541) Vendor display screen (variant) Keyboard bezel (68773–653) Customer display screen (variant) Keyboard cover (65618–119) Screw, instrument, M4 (63871–102) Printer door 70228–248) Side cover (62348–109) Housing case (61333–192) Membrane keyboard assembly (70785–751) Bracket, housing support (66245–108) Keyboard overlay (variant) Ticket mouth (70076–713) Nut, instrument head (65522–403) Bracket, display PCB, front (63673–111) Pillar, bumper stop, long (63547–406) Pillar, bumper stop, short (63547–407) Service Instructions 41 Base – CX18/A421/CX19/A425 Weighplate (68412–551) Sealing disc (65111–101) Lead plug (66421–106) Sealing Cup (63141–101) Screw (13831–161) Cover (61333–203) Screw, M4 x 16 (13718–002) Cross casting (68481–139) Screw, M6 x 16 (13811–139) Cross rubber (65138–108) Tranducer assembly (variant) Mains input plate assembly (70785–780) Screw (13711–146) Column in–fill (61254–139) Knob, knurled (67818–137) Screw (13755–114) Waher. plain (15711–206) Nut, M6 full, (13821–106) Stud (63151–114) Screw, M6 x 50 hex. hd. (13712–112) Mains transformer and loom assembly (240V, 70668–271. 110V, 70668–270)) Interconnecting PCB (71014–827) Protective cover (18136–449) Transformer mounting plate (65563–106) Mains switch (70625–533) Mains/IEC connector (variant) Base (61252–235) Rating plate (variant) Stamping plate assembly kit (70421–227) Foot (61664–151) Screw (13758–522) Hole plug (18136–447) 42 Nut, M8 thin (13821–121) Rubber bumper (18166–001) Service Instructions Top – CX18/A421 Vendor screen display (variant) Vendor display PCB (71014–802) Vendor display moulding (61254–145) Housing top (61252–233) Keyboard moulding strip (62348–113) Membrane keyboard (70785–778) Keyboard moulding cover (62348–112) Customer screen display (variant) Customer display PCB (71014–802) Customer display moulding (61254–140) PCB support bracket (66266–152) Column nut (65151–519) Column washer (65526–103) Richo support (18137–372) Main PCB (71014–711) Base (61252–234) Sealing cup (63141–101) Screw (13831–461) Printer door (62348–114) Sealing disc (65111–101) Lead plug (66421–106) Column catch casting (62272–114) and catch cover moulding (62348–111) Printer assembly (70588–530) Column washer (65138–107) Tear edge moulding (62261–162) Column (61656–155) Screw (65358–103) Service Instructions 43 Top – CX19/A425 Vendor display PCB (71014–802) Vendor screen display (variant) Vendor display moulding (61254–145) Housing top (70421–235) Keyboard moulding strip (62348–113) Membrane keyboard (70785–701) Keyboard moulding cover (62348–112) Customer screen display (variant) Customer display PCB (71014–802) PCB support bracket (66266–152) Customer display moulding (61254–140) Richo support (18137–372) Main PCB (71014–711) Base (70421–235) Sealing Cup (63141–101) Lead plug (66421–106) Printer door (62348–117) Screw (13831–461) Sealing disc (65111–101) Cable entry support plate (66256–168) Printer assembly (70588–531) Column nut (65151–519) Tear edge moulding (62261–163) Column adaptor (65553–112) Screw, M4, socket hd. cap (13811–014) Column washer (65138–107) Column (61656–170) Screw (65358–103) Screw, M3 x 6 rec. pan hd. (13755–103) 44 Service Instructions Address of local service branch: The right is reserved to vary or modify any specification without prior notice. A Company