Sinclair QL Service Manual

3.9.1 Check that the following message is displayed and that MDV2 starts to run and the corresponding red LED is illuminated.
3.9.2 Insert a blank cartridge in MDV1.
3.9.3 After a short delay the following message should be displayed:
NOTE: On pressing the space bar two bleeps should be heard and the following message displayed in green:
Microdrive 2 test OK
3.10 Microdrive 1 Test
3.10.1 As microdrive 2 test (para 3.9).
3.11 Microdrive Test Not Inserted Correctly
3.11.1 If during either microdrive test, the cartridge is not inserted correctly the following message is displayed in red:
3.11.2 Re-insert the cartridge in MDV1 or MDV2 as appropriate and press the space bar. If the test fails a second time the following message is
displayed:
3.11.3 Insert a new cartridge in MDV1 or MDV2 as appropriate and press the space bar. If the test fails again the message in para 3.11.1 is
repeated; re-insert the cartridge and press the space bar.
3.11.4 If the test fails a fourth time, the following message is displayed and the test is abandoned.

Sinclair QL Specifications

General

Processor	Motorola 68008
Clock Speed	7.5 MHz
RAM	128 KB (expandable to 640 KB)
ROM	48 KB
Operating System	Sinclair QDOS
Release Year	1984
Storage	Microdrive tape loop
Graphics	256x256 pixels, 8 colors
Ports	RS-232, ROM cartridge
Sound	Beeper (internal speaker)