BIXOLON IMPACT PRINTER SRP-270 - Manual (Page 46)

Rev. 3.02 - 46 -
SRP-270
7. Troubleshooting
7-1 Power Problem
• Check the Power Out on SMPS.
• Check the Fuse.
• Check the related Pattern.
• Check the IC34063.
7-2 System Problem
• Check the Reset part (IC & Pattern)
• Check the Clock on FS741 (14.7456MHz)
• Check the Adr/Data line Pattern
7-3 Printer Problem
• Check the Feed Motor Signal on CPU
• Check the Feed Motor Block on PCB (STA471, Step Motor Connection)
• Check the Carriage Motor Signal on CPU
• Check the Carriage Motor Block on PCB (STA471, Step Motor Connection)
• Check the Ribbon Select Signal on 74HCT574 (U22)
• Check the Ribbon Block on PCB (STA471, Connection)
• Check the Auto Cutter Signal on 74HCT574 (U22)
• Check the Auto Cutter Block on PCB (TA8428K, Connection)
• Check the Near-End, Home Sensing Signal on Main PBA.
• Check the Sensing Block. (Sensor, Harness)
• Check the Head Trigger Signal, Head Signal on CPU.
• Check Dot Printing Block on Main PBA. (STA471, 74HCT05, Connection)
7-4 Cash Drawer Problem
• Check the Drawer Connector & Harness.
• Check the Drawer Signals on 74HCT574.
• Check the Drawer Block on Main PBA (STA471, Connection).
7-5 DIP S/W Problem
• Check the Output Signal (DIP R1~4)
• Check the Diode.
• Check the Input Signal (DIP C1~C4)
• Check the related Circuit & Pattern
7-6 RS232 Problem
• Check the connection of the RS-232C CONN and Other side.
• Check the I/F Cable whether it is open or short.
• Check the Txd, Rxd Pin on CPU.
• Check the MAX232 Driving Chip and related Circuit on I/F PBA.
• Check the connection of the H/W handshaking Line and Other side (DTR/DSR)
7-7 RS485 Problem
• Check the connection of the RS-485 Connector and Other side.
• Check the I/F Cable whether it is open or short.
• Check the TXD, RXD Pin on CPU.
• Check the MAX488 Driving Chip and related Circuit on I/F PBA.
• Check the connection of the H/W handshaking Line and Other side (DR1,2/CS1,2)
• Check the Voltage Level of each Line.