Avery Berkel CX20 SERIES, Service Manual

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Contents
vi CX20/CX30/CX34 Service Manual
19.3.4 Fitting the printer (CX34) 19–6
19.3.5 Cleaning the print head 19–6
19.3.6 Changing the print head 19–6
19.3.7 Changing the microswitch 19–7
19.3.8 Disassembling the printer 19–7
19.3.9 Assembling the printer 19–7
20 Label and Receipt Printer 20–1
20.1 Description 20–3
20.2 Test and Adjustment 20–5
20.3 Servicing 20–6
20.3.1 Removing the printer (CX20/CX30) 20–6
20.3.2 Fitting the printer (CX20/CX30) 20–6
20.3.3 Removing the printer (CX34) 20–7
20.3.4 Fitting the printer (CX34) 20–7
20.3.5 Cleaning the print head 20–7
20.3.6 Changing the take–up motor 20–7
20.3.7 Changing the stepper motor 20–8
20.3.8 Changing the friction roller 20–8
20.3.9 Changing the print head 20–9
20.3.10 Changing the photodetector 20–10
20.3.11 Changing the printer mechanism 20–10
21 Networking 21–1
21.1 Networking 21–3
21.1.1 Network cabling 21–4
22 Communications Controller 22–1
22.1 Description 22–3
22.1.1 C918 external comms controller unit 22–4
22.2 Network Connections 22–4
22.2.1 Dual comms controller operation 22–5
22.3 Comms PCB – Main Components 22–6
22.4 Servicing 22–10
22.4.1 C918 external comms controller unit 22–10
23 RS232 Interface PCB (CX20 W) 23–1
23.1 General 23–3
23.2 Circuit Description 23–4
23.2.1 RS232 interface 23–4
23.2.2 Wrapper control signal interface 23–4
23.2.3 Wrapper ready signal (control interface version 2 only) 23–4
23.2.4 Scale in control signal (control interface version 2 only) 23–5
23.2.5 Analogue interface 23–5
23.2.6 ”Wrapper Start” relay control 23–5
23.2.7 Label taken detection 23–5
23.2.8 ULMA 200 series wrapper protocol 23–6
23.2.9 Serial interface devices 23–6
23.3 Servicing 23–7
23.3.1 Replacing the RS232 interface PCB 23–7