IBM B-Series, Maintenance Information

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Library Sensors Checkout Procedure
This procedure is used to display the dynamic settings of the library and drive sensors. A delay of
approximately one second is required for the sensor to change state. The Disp Sensor menu and routine
may be accessed from the “CE Mode Menus” on page PANEL-24, then select UTILITIES, then DISP
SENSORS. Figure 258 summarizes the Sense routine menu, the meaning of each menu item, and one or
more suggested methods to test each sensor.
Use the Up or Down arrows to display the sensor status that you want to check. There is a blank line
separating the drive sensors and the library sensors.
Note: It is necessary to have power on the machine while running the sensor checkout procedure. Some
procedures, such as manual load and unload of a cartridge, may ask you to power off the device
to perform a procedure safely. When the procedure is completed, you will need to power on the
machine and start the sensor checkout procedure again to verify the sensors.
Figure 258 (Page 1 of 2). Library Sensors Menu Display, Meanings and Test Methods
Menu Display Meaning and How To Test
>
Select to cancel routine
* * * * * * * * * D R I V E S E N S O R S * * * * * * * * *
CI:0 UB:0 Cartridge inserted in loader and Unload button. Manually load and unload a cartridge into the drive.
1. Load and unload a cartridge to test the Cartridge Inserted sensor. See “Manual Unload of Tape
Cartridge” on page PROC-24 and “Manual Load Procedure” on page PROC-25 for procedures. The
cartridge moves a flag up when inserted to block a sensor on the drive logic card. Inserted=1;
removed=0.
Note: Some referenced procedures ask you power off the device to perform the procedure safely.
After completion of the procedure, you will need to power on and restart the Sensor Checkout
Routine.
2. Press the Unload push button to change the state of the UB sensor.
CT:0000 Cartridge type. Manually operate the four cartridge type sense pins that sense the holes at the bottom of
the cartridge case (3) and the hole below the file protect hole (1). The bits should change to reflect the
four pins as they are depressed. See Figure 259 on page PROC-20 for a picture of the cartridge sense
assembly and the pin layout.
LH:1 FP:0 Loader home, File protected. Manually load and unload a cartridge into the drive. With the loader
unloaded the loader home sensor should=1. With a cartridge loaded, the loader home sensor should=0.
See “Manual Unload of Tape Cartridge” on page PROC-24 and “Manual Load Procedure” on
page PROC-25 for procedures.
Note: Some referenced procedures ask you power off the device to perform the procedure safely. After
completion of the procedure, you will need to power on and restart the Sensor Checkout Routine.
To exercise the file protect sensor, move the file protect lever to the top of a cartridge and load that
cartridge, or if no cartridge is loaded, open the drive door and press the top pin that senses the file
protect lever located inside the cartridge. Pin depressed (file protected) the sensor should=1; release the
pin (not file protected) should=0.
* * * * * * * * L I B R A R Y S E N S O R S * * * * * * * * * *
DO:0 CCP:1 Library door open, Cleaner cartridge present in the library clean slot. Open and close the library door.
Door open=1; door closed=0. Remove and insert a cleaner cartridge. Cleaner cartridge present=1; not
present=0.
M1P:1 M2P:1 Magazine 1 and 2 present. Remove and insert magazines. Magazine present=1; not present=0.
GIA:0 GIB:0 Global interference A and B. Block the global sensor between the drive and picker (A) or between the
magazine and picker (B). Blocked (interference)=1; not blocked (no interference)=0.
PS:0 CP:0 Priority slot, Cartridge present. Remove or insert cartridges in the priority slot. Priority slot=1 when full;
empty=0. The cartridge present sensor is located on the picker assembly on the magazine side. Load a
cartridge in the picker and observe the cartridge present sensor indication. When cartridge is present,
cartridge present=1; not present=0.
PROC-18
IBM 3570 MI