IBM 5110 Series Maintenance Analysis Procedures page 47

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TAPE READ MAP
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PAGE 23 OF 45
228
Bad H2 (base I/O) card.
229
(Entry Point E)
ERROR 948- -STATUS ERROR.
Cartridge in place status not active (status bit 3
was 0, should have been 1).
- Remove the cartridge from the tape drive.
- Determine if the problem is electrical or
mechanical by manually pressing the cartridge in
place switch. The cartridge in place switch can
be seen by looking into the front of the tape
drive, it is the rightmost switch (see MIM 203).
-While manually pressing the cartridge in place
switch
- Try the test again (press R on the keyboard).
Pressing R causes this section of the tape read
diagnostic program to run again.
Is ERROR 948 still displayed?
Y N
E
G
230
The cartridge in place 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.
E
G
231
MAP 0300-23
The problem is an electrical problem not an
adjustment problem.
- Replace the cartridge in the tape drive.
- Probe tape control card B08 (gnd) (see M I M
230).
(See appendix B, the general logic probe, in the
5110 MIM).
Is the DOWN light on?
Y N
232
Bad tape control card (see MIM 203).
233
-Probe tape control card pin B07 (-cartridge in
place).
Is the DOWN light on?
Y N
234
Bad tape switch assembly (see MIM 203).
Check/ replace the tape internal cable (see
MAP 0210 and MIM 203).
235
-Probe tape control card pin S12 (-cartridge in
place).
Is the DOWN light on 1
Y N
236
Bad tape control card (see M I M 203).
237
-Probe H2-M03 (-cartridge in place).
Is the DOWN light on 1
Y N
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E E
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01JAN79
EC 836600 PEC 835541
MAP 0300-23