1571/128D ALIGNMENT/REPAIR TEST
VERSION 1.2.1
+ — — — — — — — — — — — — — — — — — — — — — — +
| 1571/C128D RADIAL ALIGNMENT SCOPE SETTINGS |
+
------------------------------------------------------------------------------
+
1. Set Both Channels To AC Scale
2. Set Both Channels To 50 MV/DIV
3. Invert Channel 2
4. Differentially Add Both Channels
5. Set Sweep To 20 MS/DIV
6. Set Trigger To Auto Mode
7. Remove any Diskette Installed in the Drive
8. Make Sure Drive Power Is OFF (1571 Only)
* Press SPACE - Dis-Assembly & Setup
* Press RETURN - Return To Menu
Displays Alignment/Repair Test Main Menu
+
------------------------------------------------------------------------------
+
1571/C128D DIS-ASEMBLY AND SET-UP PROCEDURES
1. 1571 ONLY - Make Sure Alignment/Repair Main Menu is Displayed
2. 1571 ONLY - Turn Drive Power OFF
C128D ONLY - Turn System Power OFF
3. Disconnect Power Cable and Serial Cable (If Applicable)
4. 1571 ONLY - Remove the Four (4) Screws from the Bottom Case
and Remove the Top Case from the unit
C128D ONLY - Remove the Five (5) Screws from around the
Top Case and Remove Top Case from the unit
5. 1571 ONLY - Remove the Drive Faceplate and Set it Beside the Unit
6. 1571 ONLY - Remove the Four (4) Power Supply Mounting Screws,
Remove the Power Supply and Set it Beside the Unit
7. NEWTRONICS - Remove the Four (4) Drive Mounting Screws
8. Remove the Two (2) Shield Screws and Remove the Drive Shield
* The Drive Shield may not be installed in all units
9. NEWTRONICS - Remove the Drive Assembly and Set it on its
Side. The Disk Locking Lever must be removed
before the Drive is Removed and should be
Re-Installed after the Drive is Removed
10. Connect Scope Probes As Follows ....
1571
1
C128D
Probe
1 — Pin
13 — Hybrid
IC
(07)1 Probe
1 — Rear Lead
— Choke
(L101)
Probe 2 — Pin
14 — Hybrid
IC
(U7)|Probe
1 — Rear Lead
— Choke
(L102)
11. Connect Power Cable and Serial Cable, (If Applicable)
12. 1571 ONLY - Turn Drive Power ON
13. C128D ONLY - Turn System Power ON, Load System Configuration,
Select C128D as SYSTEM TYPE, Load C128D Diagnostic
Menu, Load Alignment/Repair Test
14. Select Drive Alignment Option From Diagnostic Menu
15. Insert 48 TPI Alignment Diskette
Commodore Part Number - 970016-01
Page 1-15
To Next Page
Loading...
