Technical data

4. Press the DENSITY/SELECT switch (5) to start the service aid.
A service aid may be exited by pressing the WRT EN/TEST switch 4. If a nonexistent
service-aid code is entered, the drive ignores it.
NOTE
For ease of reference in the remainder of this chapter, the control panel
switches will be referred to as switch 1, 2, 3, 4 or 5 as identified in Figure 4–1.
4.5.2 Tape-Unloaded Service Aids
The tape-unloaded service aids can only be executed without the tape loaded. These
service aids are listed below and described in Sections 4.5.2.1 through 4.5.2.6.
• Service Aid 111 (Servos)
• Service Aid 125 (Firmware ID)
• Service Aid 131 (Sensors)
• Service Aid 132 (Solenoids)
• Service Aid 134 (Blower)
• Service Aid 142 (Configuration)
4.5.2.1 Service Aid 111 (Servos)
Service Aid 111 checks the take-up and supply motors and their servo circuits. As soon as
this service aid begins, MODE ? appears in the display. Three test options are available:
• Auto oscillation (AUTO OSC),
• Supply motor (MAN SPLY)
• Take-up motor (MAN TKUP)
While this service aid is active, the front panel switches select and start the tests as described
in Table 4–5.
Table 4–5: Service Aid 111 Test Selection
Switch Function at MODE ?
1 Selects AUTO OSC test.
2 Selects MAN SPLY test.
3 Selects MAN TKUP test.
4 Exits the service aid.
5 Starts the selected test.
During the execution of any of the three tests the front panel switches function as described
in Table 4–6.
4–10 Troubleshooting