Table 3-2. Primary Monitor Console DS Maintenance Troubleshooting - Continued

TM 5-6350-275-24&P

Table 3-2. Primary Monitor Console DS Maintenance Troubleshooting - Continued

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

5. PMC MONOCHROME MONITOR SCREEN IS DARK (Figure 3-2)

Step 1. Adjust contrast and brightness control on black and white monitor (6).

If monitor screen is still dark, go to step 2.

Step 2. Check monitor cable (5) connection at video jack to ensure cable is seated.

If cable is loose or disconnected, connect and adjust contrast and brightness control for proper video.

If monitor screen is still dark, replace monitor (6) (Para. 3-15).

If monitor screen is still dark, replace CPU (1) (Para. 3-10).

6. PMC CPU CANNOT DOWNLOAD OR UPLOAD DATA TO TAPE STREAMER (Figure 3-2)

Step 1. Verify LED indicator on front of tape streamer module is lit.

If lit go to step 2.

If not lit, go to step 3.

Step 2. Replace tape with another tape and perform download procedures. (See TM 5-6350-275-10 for downloading

procedures.)

If downloading or uploading to or from tape still cannot be performed, go to step 3.

Step 3. Ensure power supply module (10) is plugged into ac power source and power cable (9) from power supply is

plugged into tape streamer module (8) and power supply module (10).

WARNING

Remove the AC power cord to power module, before removing the AC power cord to tape streamer

module.

If tape drive will still not upload or download tape, replace power supply module (10) (Para. 3-13).

If tape drive will still not upload or download tape, replace tape streamer (8) (Para. 3-11).

If tape drive will still not upload or download tape, replace PMC CPU (1) (Para. 3-10).

7. B39 KEYBOARD INOPERATIVE (Figure 3-2)

Step 1. PMC does not accept keyboard input.

Replace keyboard (14) (Para. 3-15)

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