IBM 5110 Series Maintenance Analysis Procedures page 46

BEE
E B C
722
TAPE READ MAP
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PAGE 22 OF 45
218
The tape is positioned on the end of tape
(EOT) mark.
- Manually move the tape so the EOT mark
(hole in tape) is past the mirror (see MIM
228).
- Replace the cartridge in the tape drive.
- Try the test again (press R on the
keyboard).
219
- Thread the tape back on the reel (see M I M
229).
- Replace the cartridge in the tape drive.
- Try the test again (press R on the keyboard).
220
(Entry Point F)
ERROR 949--STATUS ERROR.
File protect status should not be active (status
bit 6 was 1, should have been 0).
- Remove the cartridge from the tape drive.
- Determine if the problem is electrical or
mechanical by manually pressing the file protect
switch. (The file protect switch can be seen by
looking into the front of the tape drive. It is the
leftmost switch. See MIM 203).
-While manually pressing the file protect switch:
- Try the test again (press R on the keyboard).
Pressing R caused this section of the tape
diagnostic to run again.
Is error 949 still displayed on the display7
V N
E E
o E
E E
o
E
MAP 0300-22
221
The file protect switch operates electrically.
Check/adjust the switch assembly (see MIM
224).
Check/ adjust the cartridge stop blocks (see
MIM 223).
Bad tape switch assembly (see MIM 203).
Bad diagnostic tape cartridge.
222
The problem is an electrical problem, not an
adjustment problem.
- Replace the cartridge in the tape drive.
- Probe tape control card pin 007 (+file protect)
(see MIM 230).
(See appendix B, the general logic probe, in the
5110 MIM).
Is the DOWN light on 7
V N
223
Bad tape switch assembly (see MIM 203).
Check/ replace the tape internal cable (see
MAP 0210 and MIM 203).
224
-Probe tape control card pin U13 (+file protect).
Is the DOWN light on7
V N
225
Bad tape control card (see MIM 203).
226
-Probe H2-P04 (+file protect).
Is the DOWN light on 7
V N
2
3
E
F
227
Check/ replace the tape unit cable (see MAP
0210 and MIM 230,231).
01JAN79
EC 836600 PEC 835541
MAP 0300-22