The CP means: check point. The purpose of this display is to provide an indication of the activity taking place during post. The actual CP codes displayed may vary depending upon model, installed options and other factors.
Note: All actual hardware error codes on the 8595 information panel are eight digits.
If an error is detected during post, the information panel will display an eight digit code. If the system appears to "hang" and a "CP xx" code is displayed on the information panel, an error did not occur. The CP code indicates the status (progress) of post just prior to the point where it stopped. This may be useful in determining why the system did not complete post.
For example: The system appears to "hang" with "CP 71" displayed on the information panel, but nothing is displayed on the attached monitor. At "CP 71," a "key" symbol is normally displayed on the monitor and the system waits for the operator to key in the power-on password. The operator only sees a blank monitor and the "CP 71" code, which doesn't go away (hangs) and interprets this as a system failure. Actually, the system is functioning normally, but the attached monitor is defective.
Listing all the CP codes which may be displayed under various conditions is beyond the scope of this tip. It could be useful for operators/servicers to note the check points which their individual systems normally display during the post process. This could be helpful later, If "CP hangs" are experienced. (remember, the actual CP codes vary depending upon installed features and other factors which affect the actual post process.
However, some CP codes tend to be common and are listed below:
|CP 05||INITIALIZE BASIC VIDEO SUBSYSTEM.|
|CP 25||THE BEGINNING OF KEYBOARD TESTING.|
|CP 40||THE CURSOR FIRST BECOMES VISIBLE ON THE MONITOR.|
|CP 66||THE DISKETTE DRIVE IS INITIALIZED, TEST FOR 2ND DRIVE.|
|CP 6B||THE SERIAL AND PARALLEL PORTS ARE INITIALIZED.|
|CP 71||THE PASSWORD IS REQUIRED, IF INSTALLED.|
|CP 80||THE SCSI FIXED DISK MOTOR IS STARTED.|
|CP 82||THE FIXED DISK IML RECORD IS LOADED AND VERIFIED.|
Note: The above list is in numerical order. This is not the order in which they are exercised on the system.