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6.696 bytes |
Service Hints & Tips |
Document ID: YAST-3LCPZQ |
IBM 3153 ASCII Terminal Display - Does not communicate/no communication
Applicable to: World-Wide
Symptom:
This item covers the following similar problems/symptoms related to:
- 3153 does not display anything, there is no video.
- 3153 does not display data, information or the application.
- 3153 does not communicate, no communication.
- 3153 screen is blank, cursor is in the upper left corner and does not move.
- 3153 does not do anything when any keys are pressed.
Background Information:
This is a common problem for ASCII terminals (3151, 3153, WYSE, DEC, Televideo).
The problems/symptoms listed above mostly result from:
- Increases in the 3153 brightness, contrast levels. The 3153 brightness, contrast controls are located on the right side of the 3153 video element.
- Communication, cabling, connection to a host system (RS/6000, AS/400 and others). Specific Items include:
- Is the correct serial cable (modem or null-modem) used?
- Is the serial cable attached to the correct 3153 serial port?
- Is the communication port on the host (RS/6000, AS/400) initialized or activated?
Persons should know:
What is the host serial port interface:
- Is the interface RS232 or RS422?
- When the host interface is RS232, is the host port configured as a DCE (Data Communications Equipment) or a configured as a DTE (Data Terminal Equipment)?
What is the 3153 serial port interface:
- Is the interface RS232 or RS422.
- When the 3153 interface is RS232, the 3153 Main Serial Port is configured as a DTE (Data Terminal Equipment) and the 3153 Auxiliary Serial Port is configured as a DTE (Data Terminal Equipment).
When connecting:
- A DTE to DTE or DCE to DCE devices together, a null-modem cable is required. If a modem cable is used, no communication occurs.
- A DTE to DCE devices together, a modem cable is required. If a null-modem cable is used, no communications occurs.
- When persons type or press keys on the keyboard, the 3153 sends a character or a sequence of characters to the host. The host is responsible for the processing of the character or sequence of characters. Processing may include:
- Echoing the character back to the 3153.
- Processing a character sequence (moving the cursor up, insert or delete operations).
Recommended Solution:
3153 Does not display anything, there is no video:
- Using the 3153 brightness, contrast controls (on the right hand side of the video element) increase the brightness and or contrast.
Note: 3153 offers Screen Saver (CRT Saver, Auto Dim). When the 3153 is Screen Saver Mode, the 3153 video element is blank. Press any key to exit 3153 Screen Saver Mode.
- If the 3153 properly performs its power-on sequence, the 3153 should display a cursor, characters or a status line on the 3153.
- This confirms that the 3153 video portion of the 3153 video element is working properly.
3153 Does not communicate, or no data is displayed, or the screen is blank with a cursor in the upper left corner:
Confirm the 3153 setup parameter 'Host/Printer' is correct:
- If the host port is the 3153 SES1 EIA port, 3153 'Host/Printer' must set to 'EIA/Aux', or 'EIA/Para' or 'EIA/None'
- If the host port is the 3153 SES2 AUX port, 3153 'Host/Printer' must set to 'Aux/EIA', or 'Aux/Para' or 'EIA/None'
Confirm that the communications cable (modem versus null-modem) is correct:
- DTE Host Port to DTE 3153 EIA Port: Need null-modem cable.
- DCE Host Port to DTE 3153 EIA Port: Need modem cable.
- DTE Host Port to DCE 3153 Aux Port: Need modem cable.
- DCE Host Port to DCE 3153 Aux Port: Need null-modem cable.
Problem Determination Tips:
The following items may assist with problem determination:
Tip 1:
- In 3153 setup menu, set 'Local'='On' then exit 3153 setup.
- Press alphanumeric keys and cursor keys. The alphanumeric characters should appear or the cursor should move.
- These steps indicate that the 3153 is working properly.
- In 3153 setup menu, set 'Local'='Off' then exit 3153 setup.
Tip 2:
- If there is a nearby working 3151 or 3153, 'swap' the communications cable between the 'working 3151/3153' and the 'not working 3153' If the 'not working 3153' begins to work properly, this indicates that the 3153 is working properly. The problem is an incorrect communications cable or the host system does not have the host port initialized.
Notes:
The 3153 Marketing Reference Guide (G520-9415) includes information regarding 3153 communication ports, and
cabling information.
Keywords: D/T3153 3153 DCE DTE SES1 EIA SES2 AUX Blank Video Communicate Communication Connection Cursor
Move Key Keyboard RS232 RS422 232 422 Port
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General Information | |
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Date Created |
27-08-97 | |
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Last Updated |
03-12-98 | |
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Revision Date |
17-11-99 | |
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Brand |
IBM Monitors | |
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Product Family |
Terminals | |
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Machine Type |
3153 | |
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Model |
Various | |
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