Product Line: 6306 / 6312
Description: HP JetDirect: Lost CPU Link
Date: 06-20-2005
Issue / Symptom:
When connected via the parallel port, to an HP JetDirect print server, the 6306 / 6312 printer frequently stops printing, and the display will show the message: Lost CPU Link.
Cause:
The bidirectional communication feature of the HP JetDirect has some compatibility issues with the bidirectional feature within the parallel interface of the printer.
Solution/Action:
Most often, this problem can be corrected by simply turning off the bidirectional parallel feature within the printer, as follows:
- Take the printer offline, and verify the format set as power-up default.
- Press Menu
- Press Up Arrow until display shows Config Menu
- Press Enter
- Press Up Arrow until display shows Configurations
- Press Enter
- Press Up Arrow until display shows Powerup Config
- Press Enter
- Note the number of the configuration displayed, with the asterisk:
"Config 2*"
- Press Clear, to return to Offline mode.
- To change the parallel setting:
- Press Menu
- Press Up Arrow until the display shows Config Menu
- Press Enter
- Press Up Arrow until display shows Parallel I/O
- Press Enter
- Press Up Arrow until display shows Bi-Directional
- Press Enter
- Press Up Arrow until display shows Off
- Press Enter
- Press Clear, to return to Offline mode.
- Store this setting to the default config:
- Press Menu
- Press Up Arrow until display shows Config Menu
- Press Enter
- Press Up Arrow until display shows Configurations
- Press Enter
- Press Up Arrow until display shows Save
- Press Enter
- Press Up Arrow until the Config Number noted in Step 1 appears.
- Press Enter
- Press Clear, to return to Offline mode.
- Return the printer to Online mode, and note the results.
- If this doesn't correct the problem, the bidirectional configuration in the JetDirect unit will need to be reconfigured.
Specifications subject to change without notice.
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