Chapter 5  Troubleshooting
A400: Read Error
176 SuperLoader User’s Guide
• A501: SDLT Hard Write Error on page 203
• A502: SDLT Loader Communication Error
 on page 205
• A503: SDLT Drive-Servo Error
 on page 206
• A507/A508: Directory Read Failure/Directory Write Failure
 on 
page 212
A400: Read Error 5
Read Error is a recorded event indication that the tape drive detected a 
condition in which the drive was not successfully able to read the data 
from a particular location on the media.
Figure 106  Read 
Error Block Descriptor
Long 
Word
Byte 03 Byte 02 Byte 01 Byte 00
    1
   (MSB) Media ID
    2
       Media ID (LDB)
    3
 Media Format
    4
         Track
    5
Physical Block Number on Track 
 6-17