Commodore 2031 Service Manual: Care and Maintenance, Device Number Change

CARE AND MAINTENANCE

DO NOT use MAGNETIZED tools when repairing or adjusting a disk drive.
DO NOT place a disk drive near any device which generates "noise" e.g., - motors, radios televisions.
DO NOT stack drives upon each other or in any way inhibit air flow around the unit. HEAT BUILD-UP can cause disk failures.
Periodically CLEAN the read/write head with 90% isopropyl alcohol and a cotton swab. CHECK load pad for excess wear. Clean or replace as necessary.
Take the following precautions when handling a diskette:
- ALWAYS store a diskette in its jacket.
- Use ONLY felt-tip pens when writing on the label of a diskette.
- Do not bend or physically damage a diskette.
- Do not place a diskette in the area of a magnetic field.
- Do not attempt to clean a diskette.
- Do not touch the exposed area of a diskette.

DIAGNOSTIC and ADJUSTMENT procedures for the 2031 are outlined in detail in the Version 3.0 diagnostic package (Commodore Part #31405201). This Kit contains a manual that outlines testing, adjustment and alignment procedures and Version 3.0 and 3.5 diagnostic program disks.

DEVICE NUMBER CHANGE

The 2031 drive is shipped from the factory set for device # 8. The channel may be hardware altered to device #9, 10 or 11. Channel selection is changed on the main logic board by LIFTING the diodes at locations CR 17/18 and/or CR 19. The following chart indicates the selected device

ADDRESS	LOW PROFILE	HIGH PROFILE
9	CR 19	CR 19
10	CR 17	CR 18
11	CR 19 & 17	CR 19 & 18

The diode locations are indicated on the appropriate schematic.

This page has been created by Sami Rautiainen.
Read the small print.	Last updated April 10, 2006.