Technical data

Table 4–1 (Cont.): Fault System Codes (FSC) with Related FM, ERPs and FRUs
FSC Error or Fault Description
FM
Table 4-2
ERP
Table 4-3
FRU
Table 4-4
1C CPC rewind interrupt 22 3, 5, 6 1
1D GCR ARA ID burst not written 22 3, 5, 6 2, 3, 1
1E Z8002 ROM checksum 22 3, 5, 6 1
1F Block size mismatch 22 3, 5, 6 2, 3, 1
20 Read CRC mismatch 22 3, 5, 6 2, 3, 1
21 Single-track error correction 22 3, 5, 6 2, 3, 1
22 Two-track error correction 22 3, 5, 6 2, 3, 1
23 Write formatter overrun detection 22 3, 5, 6 2, 3, 1
24 Write formatter CRC detection 22 3, 5, 6 2, 3, 1
25 No GAPOUT signal 22 3, 5, 6 2, 3, 1
26 No RIRQ signal 22 3, 5, 6 2, 3, 1
27 No WIRQ signal 22 3, 5, 6 2, 3, 1
28 Hard error during loopback test 22 3, 5, 6 2, 3, 1
29 Write command reject 22 3, 5, 6 2, 3, 1
2A Write CRC mismatch 22 3, 5, 6 2, 3, 1
2B Data overrun 22 3, 5, 6 2, 3, 1
2C Cache RAM 22 3, 5, 6 2, 3, 1
2D Parity error on corrected data 22 3, 5, 6 2, 3, 1
2E Single-track error correction 22 3, 5, 6 2, 3, 1
2F Two-track error correction 22 3, 5, 6 2, 3, 1
30 Unload tape timeout 17 3, 5, 6 18, 19
31 No door lock (solenoid energized) 6 7, 3, 5, 6 21, 22
32 No reel-seated detection 4 8, 3, 5, 6 20
33 No bell crank 17 3, 5, 6 23
34 Load retries exceeded 9 9, 2 —
35 Tape reel may be upside-down 7 8, 5, 6 18, 19
36 Tape stuck 5 8, 9, 5, 6, 12 28
37 Tape slippage on take-up hub 9 9, 2, 3, 6 —
38 Tape out of tape-in-path sensor 9 — —
39 No BOT marker 8 2, 3, 5, 6 17
50 No tachometer phasing 17 3, 5, 6 12, 4, 1
51 Tension ADC null 17 3, 5, 6 3, 2
52 TACH ULA check PAL 17 3, 5, 6 12, 4, 1
53 Illegal servo loop state 17 3, 5, 6 1
54 Motor position 17 3, 5, 6 12,4
55 Fine-line tach 17 9, 2, 3, 5, 6 12, 13, 1
56 EOT/BOT position error 17 2, 3, 5 ,6 17
57 Forward speed too fast 17 3, 5, 6 4, 12
58 Forward speed too slow 17 3, 5, 6 4, 12
59 Reverse speed too fast 17 3, 5, 6 4, 12
5A Reverse speed too slow 17 3, 5, 6 4, 12
5B One millisecond overrun 17 3, 5, 6 1
5C Servo positioning routine 17 3, 5, 6 1
5D Servo interface routine 17 3, 5, 6 1
5E EOT/BOT interrupt 17 3, 5, 6 17
5F No once-around tachometer 17 3, 5, 6 13, 4
60 No supply reel movement with tape 17 9, 2, 3, 5, 6 12, 13
4–4 Troubleshooting