IBM 5110 Series Maintenance Analysis Procedures page 63

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A G G
KEF
633
TAPE READ MAP
8 8
PAGE 39 OF 45
454
Check/replace the tape unit cable (see
MAP 0210 and MIM 230,231).
455
Bad tape control card (see M I M 203).
456
ERROR 915--STATUS ERROR.
File protect status should be active (status bit 6
was 0, should have been 1).
- Probe H2- P04 (+file protect).
(See appendix B, the general logic probe, in the
5110 MIM).
- Leave the probe on the pin.
Is the DOWN light on 1
Y N
457
Bad H2 (base I/O) card.
458
- If there is a cartridge in the tape drive, remove it.
-Remove tape control card (See MIM 203).
Is the UP light on1
Y N
G
G
459
- Disconnect the tape drive cable Z2 from the
board (see MIM 231).
Is the UP light on?
V N
460
Bad H2 (base I/O) card.
461
Check/replace the tape unit cable (see MAP
0210 and MIM 230,231).
A G
H G
5
462
MAP 0300-39
- Test for continuity from tape control card pin
007 (+file protect) to pin B08 (gnd).
Is there continuity between the pins?
Y N
463
Bad tape control card (see MIM 203).
464
Bad tape switch assembly (see MIM 203).
Check/replace the tape internal cable (see
MAP 0210 and MIM 203).
Check/adjust the locking wheels (see MIM
222).
Check/ adjust the cartridge stop blocks (see
MIM 223).
465
ERROR 912--STATUS ERROR.
Cartridge in place status should not be found (bit
3 should be 0).
-Probe H2-M03 (-cartridge in place).
(See appendix B, the general logic probe, in the
5110 MIM).
-Leave the probe on the pin.
Is the DOWN light on 1
V N
466
Bad H2 (base I/O) card.
467
- If there is a cartridge in the tape drive, remove it.
-Remove tape control card (See MIM 203).
Is the UP light on?
V N
4 4
o
0
G G
H
J
01JAN79
EC 836600 PEC 835541
MAP 0300-39
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