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40930701TH DRAFT Vesion 153 /
0 Data cannot be received through the OKI HSP interface
• Is the interface board (option) connected to the OKI HSP interface connector on the Main
board properly?
• No Connect the interface board (option) to the OKI HSP interface connector
properly.
▼
• Yes Is there any broken or bent pin in the interface board (option)?
• Yes Ask the user to replace the interface board (option).
▼
• No Replace the Main board.
▼
• OK?
• No A trouble may exist in the interface board (option), interface cable or host side.
Ask the user to check these items.
A Synchronous serial I/O error (ERROR 74)
• Are POWER connector of the Main board and Connection cord-wire (Figure 8-2 No.21)
properly?
Are Connection cord-wire (Figure 8-2 No.21) and CN3 connector of the Power Supply Unit
(AC120V or 230V) connected properly?
• No Connect the connectors properly.
▼
• Yes Is there any flaw or breake ?
• Yes Replace the connection cord-wire.
▼
• Yes Replace the Main board.
▼
• Is the printer recovered?
• No Replace the Power Supply Unit (High Voltage).
▼
• YES END